7Baggers

Ionis Pharmaceuticals, Inc
(NASDAQ:IONS) 

IONS stock logo

Ionis Pharmaceuticals, Inc. discovers and develops RNA-targeted therapeutics in the United States. The company offers SPINRAZA for spinal muscular atrophy (SMA) in pediatric and adult patients; TEGSEDI, an injection for the treatment of polyneuropathy of hereditary transthyretin-mediated amyloidosis...

Founded: 1989
Full Time Employees: 817
Sector: Healthcare
Industry: Biotechnology

Share this website to your friends
• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
• EPS ttm:
• Book value per Share:
• Cash per Share:
• Current ast per Share:
• P/E ttm:
• P/E forward:
• P/E ttm high:
• P/E ttm low:
• P/S ttm:
• P/B ttm:
• P/FCF ttm:
• PEG ratio:
• Cash Ratio ttm:
• Quick Ratio ttm:
• Current Ratio ttm:
• Gross Mgn ttm:
• EBITDA Mgn ttm:
• Operating Mgn ttm:
• Net Income Mgn ttm:
• Trailing Div yield:
• Forward Div yield:
• Payout Ratio ttm:
• Ex-Dividend date:
• Target Price High:
• Target Price Low:
• Target Price Mean:
• Number of Analysts:
• Debt Ratio ttm:
• Debt to Equity ttm:
• Total Net Debt:
At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 2001-09-30 2001-06-30 2001-03-31 
                                                                                                     
      revenue:
                                                                                                     
      commercial revenue:
                                                                                                     
      product sales
    57,962,000 31,792,000 19,273,000 6,287,000                 19,437,000 19,040,000 16,364,000 15,159,000 13,690,000 11,945,000                                                                        
      royalty revenue
    75,718,000 75,694,000 69,952,000 64,166,000                                                                                              
      other commercial revenue
    7,645,000 8,112,000 13,531,000 5,715,000 12,103,000 13,152,000 11,512,000 20,013,000 16,977,000 16,828,000 16,885,000                                                                                       
      total commercial revenue
    141,325,000 115,598,000 102,756,000 76,168,000 85,716,000 75,731,000 72,036,000 59,593,000 78,845,000 84,081,000 77,897,000 67,768,000 80,479,000 72,410,000 78,184,000 72,285,000 87,266,000 84,820,000 85,861,000 84,448,000 95,664,000 95,340,000 89,734,000 83,961,000 100,365,000 95,699,000 88,299,000 68,088,000 72,947,000 82,756,000 57,198,000 42,023,000 56,609,000 33,769,000 22,923,000 8,758,000                                                              
      research and development revenue:
                                                                                                     
      collaborative agreement revenue
    52,398,000 31,436,000 336,921,000 45,031,000 96,894,000 44,883,000 141,524,000 49,345,000 179,144,000 44,167,000 91,013,000 38,334,000 49,940,000 69,250,000 38,247,000 49,784,000                                                                                  
      wainua joint development revenue
    9,607,000 9,685,000 12,372,000 10,413,000 43,966,000 13,200,000 11,690,000 10,559,000                                                                                          
      total research and development revenue
    62,005,000 41,121,000 349,293,000 55,444,000 140,860,000 58,083,000 153,214,000 59,904,000 245,660,000 60,126,000 110,514,000 62,756,000 71,410,000 87,357,000 55,607,000 69,634,000                                                                                  
      total revenue
    203,330,000 156,719,000 452,049,000 131,612,000 226,576,000 133,814,000 225,250,000 119,497,000 324,505,000 144,207,000 188,411,000 130,524,000 151,889,000 159,767,000 133,791,000 141,919,000 440,006,000 133,093,000 125,750,000 111,607,000 290,281,000 160,079,000 145,537,000 133,367,000 493,681,000 167,892,000 163,813,000 297,214,000 192,115,000 145,395,000 117,747,000 144,419,000 172,299,000 120,911,000 104,152,000 110,304,000 160,348,000 110,927,000 38,470,000 36,874,000 51,570,000 49,121,000 120,428,000 62,583,000 84,861,000 44,063,000 57,076,000 28,161,000 42,249,000 23,585,000 38,092,000 43,360,000 19,873,000 11,601,000 47,340,000 23,235,000 32,403,000 20,713,000 24,823,000 21,147,000 26,420,000 28,624,000 23,503,000 29,926,000 32,262,000 26,771,000 30,992,000 31,576,000 20,661,000 32,215,000 32,961,000 21,354,000 38,631,000 3,813,000 2,450,000 11,945,000 3,253,000 4,375,000 4,958,000 14,641,000 7,458,000 10,592,000 7,442,000 9,093,000 9,843,000 12,303,000            
      yoy
    -10.26% 17.12% 100.69% 10.14% -30.18% -7.21% 19.55% -8.45% 113.65% -9.74% 40.82% -8.03% -65.48% 20.04% 6.39% 27.16% 51.58% -16.86% -13.60% -16.32% -41.20% -4.65% -11.16% -55.13% 156.97% 15.47% 39.12% 105.80% 11.50% 20.25% 13.05% 30.93% 7.45% 9.00% 170.74% 199.14% 210.93% 125.82% -68.06% -41.08% -39.23% 11.48% 111.00% 122.23% 100.86% 86.83% 49.84% -35.05% 112.59% 103.30% -19.54% 86.62% -38.67% -43.99% 90.71% 9.87% 22.65% -27.64% 5.62% -29.34% -18.11% 6.92% -24.16% -5.23% 56.15% -16.90% -5.97% 47.87% -46.52% 744.87% 1245.35% 78.77% 1087.55% -12.85% -50.58% -18.41% -56.38% -58.70% -33.38% 61.01% -24.23% -13.91%                
      qoq
    29.74% -65.33% 243.47% -41.91% 69.32% -40.59% 88.50% -63.18% 125.03% -23.46% 44.35% -14.07% -4.93% 19.42% -5.73% -67.75% 230.60% 5.84% 12.67% -61.55% 81.34% 9.99% 9.13% -72.99% 194.05% 2.49% -44.88% 54.71% 32.13% 23.48% -18.47% -16.18% 42.50% 16.09% -5.58% -31.21% 44.55% 188.35% 4.33% -28.50% 4.99% -59.21% 92.43% -26.25% 92.59% -22.80% 102.68% -33.35% 79.14% -38.08% -12.15% 118.19% 71.30% -75.49% 103.74% -28.29% 56.44% -16.56% 17.38% -19.96% -7.70% 21.79% -21.46% -7.24% 20.51% -13.62% -1.85% 52.83% -35.87% -2.26% 54.36% -44.72% 913.14% 55.63% -79.49% 267.20% -25.65% -11.76% -66.14% 96.31% -29.59% 42.33% -18.16% -7.62% -20.00%             
      expenses:
                                                                                                     
      cost of sales
    7,957,000 2,338,000 4,151,000 1,463,000 3,830,000 1,071,000 4,164,000 2,151,000 3,062,000 2,191,000 2,537,000 1,343,000 3,686,000 1,515,000 4,745,000 4,170,000 2,226,000 3,079,000 2,958,000 2,578,000                                                                              
      research, development and patent
    279,646,000 217,754,000 217,460,000 200,759,000 245,490,000 219,761,000 222,064,000 214,215,000 256,555,000 215,330,000 229,927,000 197,813,000 308,272,000 182,990,000 180,758,000 161,126,000 179,575,000 184,770,000 139,306,000 139,801,000 170,779,000 125,083,000 122,264,000 116,952,000 148,740,000 104,366,000 106,165,000 106,417,000 113,451,000 95,255,000 101,830,000 104,067,000 128,286,000 80,214,000 83,506,000 82,638,000                                                              
      selling, general and administrative
    130,186,000 96,809,000 90,622,000 76,250,000 88,079,000 61,638,000 65,113,000 52,644,000 71,011,000 69,951,000 46,142,000 45,516,000 47,950,000 34,416,000 33,802,000 34,127,000 37,600,000 31,093,000 56,455,000 61,199,000 138,867,000 68,447,000 72,015,000 74,994,000 83,276,000 60,036,000 75,111,000 68,221,000 66,059,000 68,712,000 66,198,000 43,653,000 45,706,000 26,788,000 22,317,000 13,677,000                                 3,301,500 4,571,000 4,899,000 3,736,000 4,278,000 3,089,000 3,402,000 4,520,000 2,823,000                     
      total operating expenses
    417,789,000 316,901,000 312,233,000 278,472,000 337,399,000 282,470,000 291,341,000 269,010,000 330,628,000 287,472,000 278,606,000 244,672,000 359,908,000 218,921,000 219,305,000 199,423,000 219,401,000 218,942,000 198,719,000 203,578,000 312,947,000 196,616,000 197,291,000 194,494,000 233,027,000 165,369,000 182,640,000 175,679,000 181,330,000 163,967,000 168,028,000 147,720,000 173,992,000 107,002,000 105,823,000 96,315,000 119,193,000 94,819,000 87,397,000 91,526,000 114,511,000 97,259,000 75,782,000 71,913,000 74,780,000 65,556,000 63,726,000 57,828,000 62,107,000 49,090,000 46,020,000 41,735,000 45,992,000 39,647,000 43,644,000 41,690,000 51,019,000 43,029,000 38,883,000 37,255,000 42,278,000 37,571,000 42,175,000 34,806,000 43,933,000 37,167,000 35,819,000 32,218,000 17,433,000 36,539,000 36,094,000 30,185,000 28,574,000 23,473,000 23,351,000 28,681,000 21,517,000 21,477,000 20,974,000 23,249,000 19,602,000 23,515,000 30,949,000 31,473,000 31,183,000 34,638,000            
      income from operations
      139,816,000 -146,860,000 -110,823,000 -148,656,000 -66,091,000 -149,513,000 -6,123,000 -143,265,000 -90,195,000 -114,148,000 -208,019,000 -59,154,000 -85,514,000 -57,504,000 220,605,000 -85,849,000 -72,969,000 -91,971,000 -22,666,000 -36,537,000 -51,754,000 -61,127,000 260,654,000 2,523,000 -18,827,000 121,535,000 10,785,000 -18,572,000 -50,281,000 -3,301,000 -1,693,000 13,909,000 -1,671,000 13,989,000 41,155,000 16,108,000 -48,927,000 -54,652,000 -62,941,000 -48,138,000 44,646,000 -9,330,000 10,081,000 -21,493,000 -6,650,000 -29,667,000    1,625,000   3,696,000                  10,057,000         -12,923,000                
      yoy
      -311.55% -1.77% 1709.95% 3.76% -26.72% 30.98% -97.06% 142.19% 5.47% 98.50% -194.29% -31.10% 17.19% -37.48% -1073.29% 134.96% 40.99% 50.46% -108.70% -1548.16% 174.89% -150.30% 2316.82% -113.58% -62.56% -3781.76% -737.03% -233.53% 2909.04% -123.60% -104.11% -13.65% -96.58% -125.60% -165.39% -133.46% -209.59% 485.77% -724.35% 123.97% -771.37% -68.55%    -1925.66%                                                  
      qoq
      -195.20% 32.52% -25.45% 124.93% -55.80% 2341.83% -95.73% 58.84% -20.98% -45.13% 251.66% -30.83% 48.71% -126.07% -356.97% 17.65% -20.66% 305.77% -37.96% -29.40% -15.33% -123.45% 10231.11% -113.40% -115.49% 1026.89% -158.07% -63.06% 1423.21% 94.98% -112.17% -932.38% -111.95% -66.01% 155.49% -132.92% -10.48% -13.17% 30.75% -207.82% -578.52% -192.55% -146.90% 223.20% -77.58%                                                   
      operating margin %
    0% 0% 30.93% -111.59% -48.91% -111.09% -29.34% -125.12% -1.89% -99.35% -47.87% -87.45% -136.95% -37.03% -63.92% -40.52% 50.14% -64.50% -58.03% -82.41% -7.81% -22.82% -35.56% -45.83% 52.80% 1.50% -11.49% 40.89% 5.61% -12.77% -42.70% -2.29% -0.98% 11.50% -1.60% 12.68% 25.67% 14.52% -127.18% -148.21% -122.05% -98.00% 37.07% -14.91% 11.88% -48.78% -11.65% -105.35% 0% 0% 0% 3.75% 0% 0% 7.81% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 26.03% 0% 0% 0% 0% 0% 0% 0% 0% -122.01% 0% 0% 0% 0% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% 
      other income:
                                                                                                     
      investment income
    24,730,000 23,682,000 24,687,000 24,667,000 28,910,000 26,228,000 25,599,000 26,285,000 25,686,000 23,935,000 20,792,000 18,627,000 11,884,000 7,524,000 3,403,000 1,993,000 1,808,000 872,000 2,734,000 4,643,000 4,649,000 6,454,000 9,243,000 10,479,000 13,190,000 13,136,000 13,735,000 12,142,000 11,476,000 9,963,000 5,134,000 3,610,000 301,000 2,811,000 2,465,000 2,280,000 1,504,000 989,000 1,466,000 1,457,000 1,356,000 1,185,000 917,000 845,000 679,000 675,000 671,000 657,000 685,000 434,000 589,000 376,000 359,000 408,000 477,000 600,000 518,000 575,000 616,000 705,000 780,000 776,000 859,000 955,000 1,118,000 1,430,000 1,678,000 2,192,000 -1,743,000 7,546,000 560,000 4,956,000 2,603,000 3,053,000 3,401,000 2,123,000 1,682,000 1,344,000 811,000 2,999,000 1,241,000 349,000 504,000 561,000 842,000 1,133,000            
      interest expense
       -4,108,000 -4,191,000 -4,161,000 -4,490,000 -4,151,000 -4,558,000 -4,203,000 -2,291,000 -1,608,000 -1,731,000 -2,139,000 -2,130,000 -2,122,000 -2,238,000 -2,340,000 -2,357,000 -2,414,000 -11,506,000 -11,321,000 -11,173,000 -10,990,000 -13,364,000 -12,002,000 -11,802,000 -11,599,000 -11,457,000 -11,282,000 -11,113,000 -10,938,000 -10,786,000 -10,825,000 -11,778,000 -11,363,000 -9,934,000 -9,746,000 -9,625,000 -9,490,000 -9,351,000 -9,233,000 -9,127,000 -9,021,000 -7,307,000 -4,998,000 -4,961,000 -4,943,000                                  -7,085,000                
      interest expense related to sale of future royalties
       -18,822,000 -18,669,000 -18,533,000 -18,296,000 -17,959,000 -17,849,000 -17,779,000 -17,655,000 -15,515,000                                                                                      
      gain on investments
    788,000 29,908,000  -2,164,000 -80,250 879,000 -3,533,000 2,333,000 -161,000 -1,943,000 718,000  3,283,000 2,347,000 -6,337,000  5,218,000 4,013,000 860,000  5,818,000 835,000 9,625,000                  -125,000 199,000 1,000  581,000 538,000 -260,000 397,000 305,000 175,000 840,000 1,058,000 1,446,000  2,000 17,000  18,000 34,000      -710,000 123,000 2,612,000       1,989,000 1,521,000   2,263,000                    
      other income
    232,250 363,000 102,000 465,000 314,000 142,000 610,000 277,000 399,000 2,447,000 11,183,000 230,000 -1,980,750 4,713,000  187,000 -164,000 -469,000  3,000 -30,500 126,000 -149,000  -83,000 -140,000 -45,000  -36,250 -22,000 45,000                                                                   
      loss before income tax benefit
        -107,039,000 -144,101,000       -44,330,000 -46,709,000   -63,516,000 -83,773,000 -80,548,000 -89,739,000                    -62,685,000    -17,506,000    -33,556,000                                                  
      income tax benefit
      20,000  2,690,000 3,621,000       -8,100,000 -283,000   -303,000 1,307,000 -327,000 -130,000 -317,781,000 -2,648,000 439,000 3,257,000 -34,303,000 14,915,000 6,927,000        -222,000    231,000 -232,000   -789,000 789,000 15,409,000 -1,398,000 -881,000 2,276,000 -523,000 5,193,000 1,181,000 64,000 8,405,000 706,000           1,156,250 3,968,000  717,000                              
      net income
      123,551,000 -146,938,000 -104,349,000 -140,480,000 -66,265,000 -142,803,000 -9,263,000 -147,410,000 -85,290,000 -124,323,000 -52,430,000 -46,992,000 -105,135,000 -65,165,000 224,613,000 -82,466,000 -80,875,000 -89,869,000 -341,426,000 -43,091,000 -43,769,000 -58,480,000 203,958,000 18,432,000 -10,012,000 90,884,000 302,732,000 -20,365,000 -56,573,000 -10,812,000 -4,660,000 -4,896,000 -11,206,000 3,468,000 25,865,000 7,351,000 -56,855,000 -62,917,000 -71,433,000 -35,776,000 35,648,000 -16,717,000 31,053,000 -26,676,000 -12,081,000 -31,280,000 -24,276,000 -24,570,000 -10,126,000 -1,672,000 -2,637,000 -37,639,000 -1,207,000 -23,995,000 -16,191,250 -26,882,000 -17,889,000 -19,994,000     -8,445,000   170,930,000  3,188,000   20,007,000         -19,659,000                
      yoy
      -286.45% 2.90% 1026.51% -4.70% -22.31% 14.86% -82.33% 213.69% -18.88% 90.78% -123.34% -43.02% 30.00% -27.49% -165.79% 91.38% 84.78% 53.67% -267.40% -333.78% 337.17% -164.35% -32.63% -190.51% -82.30% -940.58% -6596.39% 315.95% 404.85% -411.76% -118.02% -166.60% -80.29% -105.51% -136.21% -120.55% -259.49% 276.37% -330.04% 34.11% -395.07% -46.56% -227.92% 8.57% 19.31% 1770.81% 820.59% -34.72% 738.94% -93.03% -83.71% 40.02% -93.25% 20.01%                                          
      qoq
      -184.08% 40.81% -25.72% 112.00% -53.60% 1441.65% -93.72% 72.83% -31.40% 137.12% 11.57% -55.30% 61.34% -129.01% -372.37% 1.97% -10.01% -73.68% 692.34% -1.55% -25.16% -128.67% 1006.54% -284.10% -111.02% -69.98% -1586.53% -64.00% 423.24% 132.02% -4.82% -56.31% -423.13% -86.59% 251.86% -112.93% -9.63% -11.92% 99.67% -200.36% -313.24% -153.83% -216.41% 120.81% -61.38% 28.85% -1.20% 142.64% 505.62% -36.59% -92.99% 3018.39% -94.97% 48.20% -39.77% 50.27% -10.53%                                       
      net income margin %
    0% 0% 27.33% -111.64% -46.05% -104.98% -29.42% -119.50% -2.85% -102.22% -45.27% -95.25% -34.52% -29.41% -78.58% -45.92% 51.05% -61.96% -64.31% -80.52% -117.62% -26.92% -30.07% -43.85% 41.31% 10.98% -6.11% 30.58% 157.58% -14.01% -48.05% -7.49% -2.70% -4.05% -10.76% 3.14% 16.13% 6.63% -147.79% -170.63% -138.52% -72.83% 29.60% -26.71% 36.59% -60.54% -21.17% -111.08% -57.46% -104.18% -26.58% -3.86% -13.27% -324.45% -2.55% -103.27% -49.97% -129.78% -72.07% -94.55% 0% 0% 0% 0% -26.18% 0% 0% 541.33% 0% 9.90% 0% 0% 51.79% 0% 0% 0% 0% 0% 0% 0% 0% -185.60% 0% 0% 0% 0% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% 
      basic and diluted net loss per share
       -0.93 -0.66 -0.95 -0.45 -0.98 -0.06 -1.03 -0.6 -0.87 -0.37 -0.33 -0.74 -0.46 -0.45 -0.58 -0.57 -0.64               -0.09     -0.52 -0.6 -0.3  -0.14   -0.1 -0.27 -0.22 -0.21 -0.09 -0.02 -0.02 -0.37 -0.01 -0.24 -0.163 -0.27 -0.18            -0.02 -0.05 -1.25 -0.13 -0.16 -0.18 -0.16 -0.03 -0.24 -0.07 -0.24 -0.34 -0.52 -0.57 -0.47 -0.47            
      shares used in computing basic and diluted net loss per share
    794 159,765  158,735 2,811 148,593 145,958 145,538 138 143,317 143,098 142,735 66 141,950 141,794 141,599 35,239.5 141,139 140,962 140,770               123,989     120,598 159 119,979  118,948   117,588 117,128 1,894 115,263 108,539 101,875 225 100,680 100,213 100,157 24,905 99,687 99,602 99,569           94,675 90,799 83,942 82,548 82,456 1,374 73,588 72,822 72,377 3,143 64,086 57,524 57,521 57,267 56,111 55,858            
      loss on investments
               -529,000    -6,625,000                                                                                  
      income before income tax benefit
      123,531,000                  -23,645,000 -40,443,000 -44,208,000 -61,737,000 238,261,000 3,517,000 -16,939,000                36,437,000  -17,508,750 -25,278,000                                                    
      basic net income per share
      0.78                  -2.43 -0.22 -0.23 -0.35 1.31 0.19 -0.01 0.63 2.42 -0.03 -0.29 -0.01 0.06   0.03 -0.233 0.06 -0.47    0.3                                                       
      diluted net income per share
      0.7                  -2.43 -0.22 -0.23 -0.35 1.29 0.18 -0.01 0.62 2.4 -0.03 -0.29 -0.01 0.06   0.03 -0.233 0.06 -0.47    0.29                                                       
      shares used in computing basic net income per share
      159,137                  115 139,708 139,352 139,429 198 140,551 140,247 138,582 -198 143,314 128,712 125,330 270 124,370  122,861 30,198.75 120,989 120,798    119,742                      24,497 98,320 98,116 97,521                              
      shares used in computing diluted net income per share
      182,331                  115 139,708 139,352 139,429 51 143,408 140,247 141,537 1,538 143,314 128,712 125,330 240 124,370  124,972 30,198.75 123,378 120,798    127,779                      24,497 98,320 98,116 111,274                              
      loss before income tax expense
       -146,822,000   -66,201,000 -142,728,000 -82,799,500 -140,808,000 -77,448,000 -112,943,000   -102,875,000 -64,071,000             -21,730,750 -19,913,000     -10,984,000      -4,211,250 -35,776,000     -11,200,000                                                   
      income tax expense
       -116,000   -64,000 -75,000 -6,456,250 -6,602,000 -7,842,000 -11,380,000   -2,260,000 -1,094,000            -31,047,000 -206,000 -452,000 -358,000 -15,000 -296,000 -961,000   -250                                                             
      spinraza royalties
        63,684,000 57,208,000 56,743,000 38,455,000 61,868,000 67,253,000 61,012,000 50,247,000 67,222,000 61,647,000 59,627,000 53,818,000 69,050,000 66,572,000 72,168,000 59,986,000 74,658,000 74,171,000 71,746,000 66,008,000 81,108,000 81,672,000 70,502,000 59,711,000 70,187,000 70,010,000 56,653,000 41,081,000 52,073,000 32,890,000 22,366,000 5,211,000                                                              
      wainua royalties
        9,929,000 5,371,000 3,781,000 1,125,000                                                                                          
      eplontersen joint development revenue
            14,970,750 15,959,000 19,501,000 24,422,000 21,470,000 18,107,000 17,360,000 19,850,000                                                                                  
      tegsedi and waylivra revenue
               6,478,000 7,584,000 5,920,000 10,386,000 6,160,000 8,599,000 15,519,000 11,544,000 19,838,000                                                                              
      licensing and other royalty revenue
               11,043,000 5,673,000 4,843,000 8,171,000 12,307,000 9,617,000 2,729,000 2,149,000 4,624,000 1,569,000 2,129,000 1,624,000 2,794,000 5,567,000 2,082,000 7,932,000 1,623,000 523,000 12,746,000 545,000 942,000 4,536,000 879,000 557,000 3,547,000                                                              
      other expense
                  -12,297,000                     -1,438,000                                                              
      research and development revenue under collaborative agreements
                    352,740,000 48,273,000 39,889,000 27,159,000 194,617,000 64,739,000 55,803,000 49,406,000 393,316,000 72,193,000 75,514,000 229,126,000 119,168,000 62,639,000 60,549,000 102,396,000 115,690,000 87,142,000 81,229,000 101,546,000 159,315,000 108,913,000 22,455,000 35,214,000 50,891,000 48,918,000 119,658,000 61,892,000 82,539,000 43,798,000 56,628,000 19,550,000 41,276,000 23,383,000 37,615,000 41,921,000 19,015,000 11,127,000 47,140,000 21,818,000 31,682,000 20,189,000 24,305,000 20,014,000 25,437,000 27,785,000 21,143,000 28,556,000 21,716,000 25,962,000 30,768,000 29,685,000 20,114,000 31,240,000 26,814,000 20,686,000 11,921,000 3,482,000 2,002,000 3,831,000 2,469,000 4,322,000 4,468,000 3,915,000 7,122,000 10,438,000 7,135,000 9,055,000 8,217,000 6,998,000            
      loss on early retirement of debt
                      -8,627,000                                                                               
      net loss attributable to noncontrolling interest in akcea therapeutics, inc.
                        1,155,000 12,147,000 11,924,000 10,254,000 -19,542,000 7,732,000 9,136,000 -6,441,000 17,344,000 15,806,000 16,215,000 9,392,000 7,406,000 3,920,000                                                                
      net loss attributable to ionis pharmaceuticals, inc. common stockholders
                    -63,302,500 -82,466,000 -80,875,000 -89,869,000                                                                              
      other expenses
                      -189,000     -99,000    -147,000    -168,000 -20,000 -2,141,000                                                                
      cost of products sold
                        3,301,000 3,086,000 3,012,000 2,548,000 1,011,000 967,000 1,364,000 1,041,000                                                                      
      net income attributable to ionis pharmaceuticals, inc. common stockholders
                        -340,271,000 -30,944,000 -31,845,000 -48,226,000 184,416,000 26,163,000 -876,000 84,443,000 320,076,000 -4,559,000 -40,358,000 -1,420,000 -2,179,000 -976,000                                                                
      tegsedi product sales
                              9,865,000 6,754,000                                                                      
      income before income tax expense
                               121,931,000   -56,215,000 -10,797,000 -2,863,000 -3,935,000  3,468,000 -28,105,000 7,351,000 -57,086,000                                                           
      loss on extinguishment of financing liability for leased facility
                                     -7,689,000                                                                
      licensing and royalty revenue
                                        1,033,000 2,014,000 16,015,000 1,660,000 679,000 203,000 770,000 691,000 2,322,000 265,000 448,000 8,611,000 973,000 202,000 477,000 1,439,000 858,000 474,000 200,000 1,417,000 721,000 524,000 518,000 1,133,000 983,000 839,000 2,360,000 1,370,000 10,546,000 809,000 224,000 1,891,000 547,000 975,000 6,147,000 668,000 26,710,000 331,000 448,000 8,114,000 784,000 53,000 490,000 10,726,000 336,000 154,000 307,000 38,000 1,626,000 5,305,000            
      research, development and patent expenses
                                        101,151,000 84,631,000 77,573,000 80,964,000 101,330,000 88,508,000 68,007,000 64,447,000 67,953,000 61,086,000 59,264,000 53,448,000 57,430,000 45,660,000                                                
      general and administrative
                                        18,042,000 10,188,000 9,824,000 10,562,000 13,181,000 8,751,000 7,775,000 7,466,000 6,827,000 4,470,000 4,462,000 4,380,000 4,677,000 3,430,000 3,389,000 3,423,000 3,234,000 3,096,000 3,209,000 2,976,000 3,800,000 3,105,000 2,874,000 3,010,000 2,945,000 2,855,000 3,051,000 2,819,000 3,830,000 3,335,000 3,673,000 3,677,000          2,710,000 2,566,000 1,442,750 1,724,000 1,910,000 2,137,000 2,373,000 2,568,000 2,453,000            
      gain on investment in regulus therapeutics inc.
                                             20,211,000                                                        
      basic and diluted net income per share
                                                -0.15 -0.23                       -0.01 0.03                            
      shares used in computing basic and diluted net income per share
                                                29,377.75 117,811               42 99,196 99,091 99,013                                  
      equity in net loss of regulus therapeutics inc.
                                                                                                     
      research and development
                                                      42,631,000 38,312,000 42,758,000 36,551,000 40,435,000 38,714,000 47,219,000 39,924,000 36,009,000 34,245,000 39,333,000 34,716,000 39,124,000 31,987,000 40,103,000 33,832,000 32,146,000 28,541,000 16,828,000 31,968,000 31,195,000 26,449,000 24,296,000 20,384,000 19,949,000 24,240,000 18,973,000 18,982,000 18,372,000 15,380,750 18,212,000 20,950,000 22,361,000 29,566,000 32,036,000 28,947,000            
      basic and diluted net loss
                                                               -200                                      
      loss from continuing operations, before income tax expense
                                                                                                     
      net income from continuing operations
                                                                    -0.21 -0.07 -0.03                               
      discontinued operations:
                                                                                                     
      loss from discontinued operations
                                                                                                     
      gain on sale of ibis biosciences, inc., net of tax
                                                                    13,884,000   171,773,000                              
      net income from discontinued operations, net of tax
                                                                    13,884,000   171,744,000                              
      net loss attributable to noncontrolling interest in regulus therapeutics inc.
                                                                    1,487,000 1,136,000 857,000 913,000                              
      net income attributable to isis pharmaceuticals, inc. common stockholders
                                                                -13,986,000 -12,454,000 -25,154,000 -9,658,000 -6,958,000 -6,924,000 -2,896,000 171,843,000                              
      basic and diluted net income per share:
                                                                                                     
      net loss from continuing operations attributable to isis pharmaceuticals, inc. common stockholders
                                                                -0.14 -0.13 -0.25 -0.1                                  
      net income from discontinued operations
                                                                    0.14   1.76                              
      basic and diluted net income attributable to isis pharmaceuticals, inc. common stockholders
                                                                -0.14 -0.13 -0.25 -0.1 -0.07 -0.07                                
      loss from continuing operations, before income tax benefit
                                                                                                     
      income from continuing operations, before income tax benefit
                                                                                                     
      net income from continuing operations, net of income tax benefit
                                                                                                     
      basic net income per share:
                                                                                                     
      basic net income attributable to isis pharmaceuticals, inc. common stockholders
                                                                      -0.03 1.76                              
      diluted net income per share:
                                                                                                     
      diluted net income attributable to isis pharmaceuticals, inc. common stockholders
                                                                      -0.03 1.57                              
      net loss from continuing operations, net of income tax benefit
                                                                                                     
      net income from continuing operations attributable to isis pharmaceuticals, inc. common stockholders
                                                                                                     
      loss attributed to noncontrolling interest in symphony genisis, inc.
                                                                            8,748,000 7,603,000 6,806,000 5,085,250 6,733,000 13,608,000                    
      loss attributed to noncontrolling interest in regulus therapeutics llc
                                                                        764,000 1,208,000 965,000 883,000 87,000                         
      loss attributed to noncontrolling interest in ibis biosciences, inc.
                                                                        290,750 267,000 791,000 105,000                          
      excess purchase price over carrying value of noncontrolling interest in symphony genisis, inc.
                                                                                                     
      net income applicable to common stock
                                                                        -826,250 3,188,000                            
      shares used in computing basic net income (loss) per share
                                                                        23,446.5 95,863                            
      shares used in computing diluted net income (loss) per share
                                                                        23,446.5 100,181                            
      net loss applicable to common stock
                                                                          -2,208,000 -4,285,000 -105,304,000 -11,024,000 -13,020,000 -14,146,000 -12,105,000 -2,172,000 -17,480,000 -7,913,000 -15,172,000 -19,659,000 -29,658,000 -32,708,000 -26,129,000 -26,487,000            
      restructuring activities
                                                                                  36,000 -425,000  650,000 7,084,000               
      net loss before noncontrolling interest in symphony genisis, inc.
                                                                                                     
      operating expenses:
                                                                                                     
      compensation expense related to variable accounting of stock options
                                                                                                     
      compensation benefit related to variable accounting of stock options
                                                                                                     
      compensation expense related to stock options
                                                                                    15,000 5,000    3,238,000            
      accretion of dividends on preferred stock
                                                                                                     
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 
                                                                                             
        assets
                                                                                             
        current assets:
                                                                                             
        cash and cash equivalents
      372,260,000 338,341,000 297,304,000 264,192,000 242,077,000 334,605,000 293,993,000 348,889,000 399,266,000 352,060,000 424,790,000 309,031,000 276,472,000 314,993,000 521,917,000 542,513,000 869,191,000 632,953,000 565,119,000 414,155,000 397,664,000 633,059,000 530,181,000 486,195,000 683,287,000 247,939,000 272,523,000 375,811,000 278,820,000 479,891,000 805,490,000 227,505,000 129,630,000 159,184,000 132,991,000 114,221,000 84,685,000 84,275,000 112,534,000 93,337,000 128,797,000 126,593,000 119,487,000 148,348,000 142,998,000 73,220,000 94,081,000 161,778,000 159,973,000 256,408,000 296,540,000 107,650,000 124,482,000 84,563,000 85,645,000 56,391,000 65,477,000 55,263,000 85,022,000 86,200,000 70,052,000 100,122,000 46,038,000 98,590,000 105,255,000 149,293,000 215,789,000 254,057,000 217,918,000 264,682,000 445,720,000 271,936,000 102,398,000 132,964,000 183,423,000 114,514,000 104,238,000 105,359,000 1,711,000 3,650,000 53,222,000 7,988,000 12,006,000 21,446,000 30,371,000 39,757,000  
        short-term investments
      2,305,176,000 1,901,830,000 1,992,676,000 1,880,960,000 2,055,579,000 2,148,671,000 1,784,693,000 1,857,327,000 1,931,935,000 1,883,522,000 1,960,598,000 2,037,750,000 1,710,397,000 1,666,670,000 1,499,910,000 1,509,880,000 1,245,782,000 1,354,146,000 1,494,151,000 1,405,840,000 1,494,711,000 1,696,145,000 1,818,435,000 1,897,892,000 1,816,257,000 1,972,891,000 1,989,508,000 1,877,943,000 1,805,252,000 1,479,098,000 1,174,960,000 807,796,000 893,085,000 851,624,000 722,718,000 746,060,000 580,538,000 603,573,000 551,556,000 610,467,000 650,386,000 685,599,000 635,447,000 546,706,000 585,834,000 518,766,000 496,754,000 469,515,000 496,788,000 414,490,000 294,212,000 264,261,000 249,964,000 259,010,000 250,384,000 277,553,000 278,187,000 309,500,000 310,162,000 340,622,000 402,301,000 397,782,000 475,990,000 420,529,000 469,057,000 458,547,000 421,722,000 398,179,000 273,080,000 247,341,000 91,249,000 66,479,000 43,593,000 69,769,000 102,131,000 78,819,000 22,633,000 32,581,000 76,850,000 90,739,000 48,435,000 51,592,000 70,778,000 104,119,000 116,973,000 141,116,000  
        contracts receivable
      66,059,000 24,608,000 52,580,000 39,707,000 92,188,000 17,928,000 27,259,000 5,140,000 97,778,000 142,359,000 27,956,000 13,914,000 25,538,000 6,645,000 6,751,000 26,122,000 61,896,000 9,068,000 24,004,000 23,397,000 76,204,000 38,977,000 27,834,000 28,605,000 63,034,000 49,077,000 31,615,000 10,452,000 12,759,000 14,732,000 16,761,000 36,858,000 62,955,000 42,924,000 50,615,000 69,357,000 108,043,000 8,544,000 746,000 16,480,000 11,356,000 1,826,000 3,264,000 26,934,000 3,903,000 26,313,000 41,941,000 9,823,000 11,102,000 12,645,000 2,024,000 1,172,000 522,000 3,476,000 1,558,000 1,379,000 6,921,000 1,858,000 5,674,000 591,000 1,242,000 1,341,000 5,040,000 1,904,000 10,899,000 586,000 783,000 2,351,000 4,121,000 5,021,000 6,399,000 4,358,000 9,237,000 2,296,000 2,057,000 2,395,000 2,959,000 2,618,000 3,503,000 3,918,000 4,209,000 4,456,000 2,911,000 5,464,000 9,593,000 5,774,000  
        inventories
      10,048,000 10,470,000 8,481,000 11,502,000 12,512,000 28,452,000 28,723,000 30,259,000 28,425,000 25,634,000 25,538,000 22,200,000 22,033,000 20,645,000 19,811,000 24,032,000 24,806,000 22,930,000 24,099,000 22,199,000 21,965,000 22,172,000 23,722,000 22,885,000 18,180,000 19,375,000 18,505,000 11,057,000 8,582,000 8,378,000 9,067,000 9,060,000 9,982,000 8,451,000 6,504,000 6,801,000 7,489,000 9,319,000 7,668,000 6,520,000 6,899,000 6,583,000 6,782,000 6,839,000 6,290,000 7,085,000 7,776,000 7,537,000 8,033,000 7,385,000 8,309,000 5,809,000 6,121,000 6,737,000 7,108,000 4,873,000 4,139,000 2,915,000 2,249,000 2,606,000 2,484,000 1,996,000 2,794,000 2,601,000 2,768,000 2,817,000 2,779,000 2,591,000 2,718,000 5,511,000 4,699,000 3,700,000 1,930,000 1,510,000              
        other current assets
      237,092,000 243,744,000 226,109,000 222,571,000 217,934,000 184,194,000 194,715,000 174,060,000 184,449,000 181,075,000 177,872,000 159,724,000 168,254,000 143,173,000 142,759,000 150,577,000 143,374,000 136,643,000 131,045,000 123,827,000 140,163,000 146,628,000 131,015,000 122,468,000 139,839,000 118,809,000 102,071,000 98,686,000 102,473,000 97,125,000 76,994,000 62,064,000 72,332,000 48,930,000 51,531,000 25,933,000 14,763,000 15,236,000 17,250,000 17,403,000 14,773,000 29,066,000 29,868,000 13,154,000 15,691,000 8,353,000 8,567,000 9,814,000 7,518,000 7,372,000 5,786,000 8,074,000 8,727,000 7,800,000 5,724,000 7,417,000 5,415,000 7,553,000 7,613,000 7,376,000 7,058,000 6,309,000 7,023,000 6,791,000 8,147,000 8,004,000 6,439,000 6,514,000 5,085,000 6,988,000 7,113,000 6,378,000 4,229,000 4,238,000 7,363,000 9,614,000 6,461,000 6,830,000 7,918,000 6,600,000 7,459,000 7,260,000 8,574,000 8,236,000 9,281,000 7,686,000  
        total current assets
      2,990,635,000 2,518,993,000 2,577,150,000 2,418,932,000 2,620,290,000 2,713,850,000 2,329,383,000 2,415,675,000 2,641,853,000 2,584,650,000 2,616,754,000 2,542,619,000 2,202,694,000 2,152,126,000 2,191,148,000 2,253,124,000 2,345,049,000 2,155,740,000 2,238,418,000 1,989,418,000 2,130,707,000 2,536,981,000 2,531,187,000 2,558,045,000 2,720,597,000 2,408,091,000 2,414,222,000 2,373,949,000 2,207,886,000 2,079,224,000 2,083,272,000 1,143,283,000 1,167,984,000 1,111,113,000 964,359,000 962,372,000 797,932,000 730,329,000 697,971,000 763,910,000 837,003,000 868,261,000 855,452,000 835,427,000 836,597,000 681,163,000 705,797,000 722,053,000 735,510,000 763,304,000 669,061,000 431,829,000 423,438,000 361,586,000 350,419,000 347,613,000 360,139,000 377,089,000 410,720,000 437,395,000 483,137,000 507,550,000 536,885,000 530,415,000 596,126,000 619,247,000 647,512,000 663,692,000 518,384,000 529,543,000 555,180,000 352,851,000 161,387,000 210,777,000 296,067,000 206,203,000 136,923,000 148,274,000 90,731,000 105,858,000 114,242,000 72,367,000 96,991,000 159,355,000 182,292,000 208,881,000  
        property, plant and equipment
      123,048,000 106,117,000 111,951,000 102,925,000 94,251,000 82,502,000 75,902,000 72,795,000 71,043,000 70,928,000 91,634,000 85,158,000 74,294,000 180,806,000 177,015,000 177,724,000 178,069,000 180,144,000 179,316,000 180,413,000 181,077,000 181,518,000 172,618,000 163,952,000 153,651,000 148,717,000 135,349,000 133,519,000 132,160,000 132,003,000 127,940,000 123,188,000 121,907,000 116,624,000 99,677,000 95,439,000 92,845,000 90,970,000 90,602,000 90,365,000 90,233,000 89,243,000 89,692,000 89,047,000 88,958,000 88,068,000 86,321,000 86,641,000 86,198,000 87,273,000 88,312,000 89,694,000 91,084,000 92,598,000 94,008,000 95,132,000 96,615,000 98,019,000 88,010,000 37,680,000 35,703,000 35,549,000 36,071,000 36,171,000 27,338,000 26,911,000 26,636,000 24,183,000 17,371,000 14,019,000 10,494,000 8,274,000 6,583,000 6,890,000 7,042,000 7,157,000 7,227,000 7,563,000 8,208,000 9,130,000 10,181,000 22,837,000 26,665,000 30,857,000 32,172,000 32,721,000  
        right-of-use assets
      238,549,000 241,993,000 163,933,000 159,269,000 161,856,000 164,424,000 166,939,000 169,431,000 171,896,000 174,310,000 176,718,000 179,148,000 181,544,000                                                                           
        deposits and other assets
      171,604,000 165,988,000 132,099,000 131,822,000 127,278,000 120,323,000 118,904,000 106,027,000 105,280,000 104,083,000 86,025,000 78,296,000 75,344,000 59,434,000 58,916,000 58,949,000 59,567,000 48,971,000 49,962,000 49,925,000 50,034,000 41,191,000 41,465,000 32,552,000 27,633,000 26,199,000 25,778,000 25,954,000 12,910,000 12,659,000 12,651,000 10,175,000 10,129,000 2,916,000 5,433,000 5,010,000 1,325,000 1,358,000 1,384,000 1,400,000 9,553,000 9,727,000 10,301,000 10,823,000 10,378,000 4,533,000 5,299,000 5,438,000 5,359,000 5,481,000 5,601,000 5,824,000 5,939,000 6,126,000 2,460,000 2,570,000 2,845,000 3,121,000 3,269,000 3,398,000 3,528,000 3,658,000 3,789,000 3,211,000 3,269,000 3,441,000 3,590,000 3,739,000 5,274,000 5,557,000 7,229,000 2,854,000 2,806,000 2,809,000 2,797,000 4,276,000 2,433,000 2,667,000 2,883,000 3,201,000 3,359,000 3,220,000 3,422,000 8,052,000 8,253,000 8,411,000  
        total assets
      3,523,836,000 3,033,091,000 2,985,133,000 2,812,948,000 3,003,675,000 3,081,099,000 2,691,128,000 2,763,928,000 2,990,072,000 2,933,971,000 2,971,131,000 2,885,221,000 2,533,876,000 2,421,971,000 2,456,133,000 2,519,092,000 2,611,690,000 2,414,893,000 2,497,069,000 2,248,551,000 2,389,755,000 3,095,701,000 3,078,950,000 3,090,913,000 3,233,112,000 2,894,989,000 2,877,765,000 2,835,889,000 2,667,784,000 2,247,913,000 2,247,315,000 1,299,560,000 1,322,024,000 1,252,561,000 1,090,831,000 1,083,996,000 912,467,000 843,586,000 811,109,000 875,819,000 956,105,000 988,005,000 976,258,000 955,433,000 955,809,000 793,803,000 817,777,000 834,616,000 847,156,000 881,916,000 788,651,000 552,961,000 545,686,000 485,681,000 472,394,000 470,807,000 484,894,000 505,785,000 529,572,000 505,942,000 550,477,000 575,858,000 606,351,000 599,723,000 657,184,000 680,578,000 709,161,000 724,506,000 574,150,000 584,692,000 609,399,000 405,424,000 213,003,000 263,255,000 349,904,000 255,907,000 187,768,000 201,919,000 150,637,000 166,373,000 177,382,000 146,526,000 175,648,000 255,271,000 279,962,000 312,726,000  
        liabilities and stockholders’ equity
                                                                                             
        current liabilities:
                                                                                             
        accounts payable
      28,082,000 14,326,000 22,800,000 17,456,000 42,964,000 9,052,000 9,243,000 13,082,000 26,027,000 5,615,000 24,021,000 10,499,000 17,921,000 20,545,000 10,351,000 16,125,000 11,904,000 8,357,000 14,658,000 9,506,000 17,199,000 16,222,000 7,407,000 21,174,000 16,067,000 13,146,000 15,628,000 13,332,000 28,660,000 13,576,000 13,291,000 13,833,000 24,886,000 23,525,000 13,268,000 23,237,000 21,120,000 15,680,000 17,583,000 19,464,000 28,355,000 19,294,000 10,954,000 16,487,000 17,984,000 15,627,000 13,453,000 9,869,000 11,009,000 8,781,000 9,461,000 5,385,000 10,239,000 5,256,000 6,194,000 5,344,000 8,300,000 6,653,000 3,071,000 4,652,000 6,523,000 3,392,000 5,355,000 4,843,000 4,696,000 5,554,000 6,659,000 7,445,000 5,710,000 6,885,000 5,716,000 5,633,000 4,507,000 4,161,000 3,274,000 4,288,000 3,003,000 3,267,000 2,483,000 2,095,000 2,833,000 2,297,000 2,240,000 2,818,000 3,416,000 3,349,000  
        accrued compensation
      116,236,000 57,019,000 46,564,000 26,575,000 69,614,000 40,558,000 35,018,000 21,537,000 67,727,000 33,781,000 29,322,000 18,160,000 49,178,000 30,410,000 24,985,000 16,525,000 38,810,000 32,320,000 30,222,000 29,263,000 65,728,000 28,390,000 22,822,000 16,437,000 37,357,000 24,404,000 20,049,000 16,264,000 29,268,000 24,259,000 15,089,000 12,166,000 25,151,000 15,186,000 10,298,000 8,267,000 24,186,000 11,008,000 7,441,000 6,338,000 16,065,000 9,508,000 7,915,000 5,411,000 12,302,000 7,164,000 6,430,000 4,328,000 12,168,000 6,653,000 7,031,000 3,818,000 7,878,000 5,836,000 4,939,000 3,502,000 9,183,000 5,233,000 4,406,000 3,076,000 6,831,000 4,833,000 4,312,000 2,971,000 7,135,000 4,763,000 4,460,000 3,181,000 6,835,000 3,956,000 3,631,000 2,449,000 4,920,000 2,379,000 2,017,000 6,222,000 1,332,000 1,628,000 1,517,000 3,706,000 1,306,000 1,736,000 1,811,000 3,819,000 3,033,000 2,058,000  
        accrued liabilities
      106,089,000 99,310,000 98,957,000 102,735,000 108,438,000 124,396,000 114,330,000 106,048,000 147,894,000 118,968,000 104,745,000 112,702,000 140,101,000 128,002,000 134,336,000 99,256,000 88,560,000 75,681,000 75,150,000 78,766,000 90,161,000 80,750,000 67,802,000 62,507,000 66,769,000 52,615,000 49,681,000 45,130,000 48,361,000 50,786,000 58,486,000 66,470,000 66,618,000 33,963,000 35,878,000 30,870,000 36,013,000 23,616,000 18,976,000 26,172,000 28,105,000 24,487,000 23,753,000 23,746,000 30,451,000 29,140,000 25,166,000 27,903,000 22,092,000 22,283,000 16,514,000 17,758,000 15,401,000 11,900,000 15,619,000 15,600,000 18,655,000 15,071,000 10,873,000 8,134,000 12,389,000 10,285,000 13,302,000 9,371,000 12,339,000 7,491,000 8,422,000 7,750,000 9,556,000 5,979,000 7,441,000 5,301,000 5,278,000 5,094,000 7,300,000 6,071,000 6,846,000 6,932,000 7,871,000 8,643,000 10,042,000 7,988,000 11,902,000 10,430,000 7,900,000 8,049,000  
        income taxes payable
      2,713,000 101,000 81,000 126,000 34,000 41,000 284,000 2,210,000 2,151,000 31,070,000 24,732,000 17,286,000 6,249,000 16,000 14,000 901,000 36,000 450,000 1,875,000 1,326,000 1,324,000 8,929,000 27,943,000 32,946,000 32,514,000 1,945,000 4,035,000 18,401,000                                     7,323,000 15,864,000 23,233,000 29,627,000                    
        0 percent convertible senior notes due 2026
      431,948,000                                                                                       
        current portion of deferred contract revenue
      73,761,000 76,986,000 75,910,000 81,097,000 78,989,000 76,018,000 94,066,000 130,406,000 151,128,000 204,824,000 96,252,000 92,335,000 90,577,000 99,511,000 93,393,000 91,437,000 97,714,000 97,925,000 102,072,000 106,740,000 108,376,000 104,431,000 100,401,000 120,811,000 118,272,000 137,607,000 137,388,000 144,846,000 160,256,000 157,145,000 160,589,000 120,127,000 106,465,000 104,913,000 110,840,000 108,150,000 51,280,000 56,539,000 58,473,000 63,695,000 67,322,000 68,136,000 58,285,000 52,586,000 51,713,000 51,727,000 51,560,000 54,428,000 48,135,000 55,977,000 40,409,000 35,244,000 35,925,000 23,427,000 22,998,000 34,320,000 36,584,000 52,428,000 68,719,000 73,392,000 74,502,000 77,268,000 77,268,000 70,890,000 75,681,000 76,941,000 82,092,000 85,581,000 92,662,000 99,794,000 101,507,000 57,951,000 7,804,000 6,070,000 1,043,000 1,044,000 571,000 712,000 1,111,000 1,514,000 1,410,000 4,926,000 10,435,000 15,801,000 17,523,000 15,832,000  
        other current liabilities
      22,738,000 24,803,000 22,806,000 22,304,000 9,279,000 10,034,000 8,799,000 9,988,000 8,831,000 9,952,000 8,903,000 8,239,000 7,535,000                                                                           
        total current liabilities
      781,567,000 903,456,000 897,236,000 250,293,000 309,318,000 304,566,000 306,162,000 327,648,000 448,090,000 404,210,000 287,975,000 259,221,000 311,561,000 283,454,000 267,811,000 228,450,000 240,550,000 279,778,000 293,825,000 295,105,000 583,250,000 244,571,000 231,341,000 258,025,000 273,005,000 231,777,000 241,213,000 252,473,000 280,294,000 260,238,000 248,619,000 212,643,000 224,741,000 177,647,000 191,760,000 170,580,000 133,784,000 106,892,000 111,081,000 124,495,000 148,876,000 122,198,000 102,132,000 100,288,000 115,332,000 107,325,000 100,816,000 100,836,000 97,812,000 103,278,000 86,995,000 70,295,000 74,322,000 51,601,000 55,063,000 61,707,000 76,112,000 83,542,000 91,980,000 94,399,000 105,890,000 100,916,000 105,214,000 92,095,000 111,444,000 114,719,000 127,861,000 136,460,000 124,698,000 117,683,000 127,111,000 80,260,000 29,966,000 25,178,000 101,941,000 25,139,000 19,436,000 20,281,000 20,845,000 23,793,000 23,905,000 26,053,000 36,062,000 42,897,000 42,132,000 39,643,000  
        long-term deferred contract revenue
      92,001,000 107,906,000 125,095,000 140,678,000 156,504,000 173,776,000 188,701,000 215,088,000 241,184,000 249,272,000 254,398,000 272,973,000 287,768,000 294,656,000 315,196,000 333,138,000 351,879,000 362,887,000 379,874,000 401,966,000 424,046,000 429,931,000 448,576,000 467,842,000 490,060,000 492,979,000 516,584,000 542,416,000 567,359,000 523,384,000 556,586,000 85,446,000 72,708,000 79,656,000 100,843,000 115,759,000 91,198,000 101,831,000 112,436,000 123,084,000 134,306,000 149,100,000 108,128,000 119,083,000 127,797,000 110,614,000 120,387,000 130,755,000 142,790,000 151,006,000 75,184,000 58,816,000 66,656,000 36,961,000 31,715,000 35,469,000 17,474,000 19,415,000 21,356,000 32,065,000 50,413,000 70,900,000 90,164,000 81,457,000 107,097,000 125,237,000 143,376,000 154,293,000 172,766,000 191,279,000 214,202,000 84,798,000 8,131,000 9,310,000 143,000 44,000            
        0 percent convertible senior notes due 2030
      751,495,000                                                                                       
        1.75 percent convertible senior notes due 2028
      567,830,000                                                                                       
        liability related to sale of future royalties
      551,353,000 545,182,000 541,205,000 536,141,000 542,212,000 538,102,000 533,754,000 525,072,000 513,736,000 512,700,000 510,174,000 505,081,000                                                                            
        long-term lease liabilities
      262,383,000 262,672,000 164,379,000 159,392,000 161,805,000 168,372,000 166,438,000 168,674,000 170,875,000 173,038,000 175,020,000 177,000,000 178,941,000                                                                           
        long-term obligations
      28,118,000 28,785,000 59,074,000 55,671,000 51,924,000 41,735,000 41,773,000 41,800,000 41,836,000 48,801,000 16,436,000 7,487,000 7,126,000                                                                           
        total liabilities
      3,034,747,000 2,415,124,000 2,353,409,000 2,337,222,000 2,415,324,000 2,418,631,000 2,427,430,000 2,467,413,000 2,603,386,000 2,618,511,000 2,542,830,000 2,398,651,000 1,960,989,000 1,827,610,000 1,831,407,000 1,809,518,000 1,839,953,000 1,884,357,000 1,914,395,000 1,567,987,000 1,546,408,000 1,489,317,000 1,484,155,000 1,520,502,000 1,548,565,000 1,397,023,000 1,420,563,000 1,448,469,000 1,480,624,000 1,407,769,000 1,429,879,000 912,459,000 903,305,000 854,893,000 875,260,000 882,190,000 812,902,000 703,947,000 699,896,000 717,657,000 755,315,000 742,591,000 675,938,000 679,582,000 698,029,000 449,031,000 450,917,000 460,514,000 468,766,000 480,470,000 387,570,000 351,870,000 362,920,000 315,404,000 318,080,000 319,935,000 313,460,000 318,960,000 317,355,000 278,239,000 305,935,000 322,149,000 344,122,000 315,286,000 355,119,000 375,753,000 403,344,000 421,836,000 469,902,000 476,940,000 509,228,000 327,949,000 202,819,000 201,041,000 270,473,000 158,005,000 154,172,000 156,454,000   173,342,000       
        stockholders’ equity:
                                                                                             
        common stock, 0.001 par value...
      163,000 161,000 159,000 159,000 158,000 158,000 146,000 146,000 144,000 143,000 143,000 143,000 142,000 142,000 142,000 142,000 141,000 141,000 141,000 141,000 140,000 140,000 139,000 139,000 140,000 141,000 140,000 140,000 138,000 138,000 137,000 125,000 125,000 125,000 124,000 124,000 122,000 121,000 121,000 121,000 120,000 120,000 120,000 120,000 118,000 118,000 118,000 118,000 116,000 116,000 114,000 103,000 102,000 102,000 100,000 100,000 100,000 100,000 100,000 100,000 99,000 99,000 99,000 99,000 99,000 98,000 98,000 98,000 97,000 96,000 95,000 93,000 87,000 82,000 82,000 82,000 74,000 73,000 73,000 72,000 72,000 58,000 58,000 57,000 57,000   
        additional paid-in capital
      3,145,402,000 3,045,585,000 2,932,747,000 2,901,262,000 2,868,812,000 2,831,942,000 2,303,369,000 2,270,047,000 2,215,098,000 2,148,002,000 2,118,309,000 2,089,358,000 2,059,850,000 2,034,554,000 2,008,794,000 1,983,078,000 1,964,167,000 1,942,348,000 1,910,379,000 1,925,801,000 2,113,646,000 2,311,679,000 2,271,630,000 2,233,644,000 2,203,778,000 2,219,090,000 2,177,222,000 2,117,969,000 2,047,250,000 2,030,313,000 2,011,561,000 1,576,954,000 1,549,904,000 1,528,186,000 1,434,986,000 1,410,102,000 1,311,229,000 1,373,309,000 1,352,589,000 1,331,945,000 1,309,107,000 1,286,690,000 1,269,452,000 1,251,928,000 1,224,509,000 1,365,407,000 1,352,994,000 1,343,874,000 1,324,804,000 1,315,643,000 1,292,745,000 1,091,842,000 1,077,150,000 1,073,658,000 1,019,936,000 1,016,497,000 1,013,592,000 1,009,330,000 1,006,288,000 1,003,595,000 1,000,181,000 995,149,000 991,436,000 988,053,000 985,620,000 978,411,000 972,697,000 967,648,000 905,721,000 900,303,000 890,435,000 884,434,000 820,422,000 887,579,000 884,506,000 880,954,000 802,063,000 795,026,000 774,366,000 770,263,000 764,555,000 623,385,000 623,361,000 622,395,000 622,106,000 610,517,000  
        accumulated other comprehensive loss
         -28,949,000 -30,811,000 -24,173,000 -34,838,000 -34,964,000 -32,645,000 -46,037,000 -50,913,000 -48,983,000 -57,480,000 -63,140,000 -54,007,000 -48,578,000 -32,668,000 -27,437,000 -25,796,000 -24,203,000 -21,071,000 -19,572,000 -16,440,000 -27,235,000 -25,290,000 -25,375,000 -24,252,000 -27,608,000 -32,016,000 -32,532,000 -32,634,000 -33,234,000  -30,199,000 -30,372,000 -30,460,000  -26,498,000 -26,853,000 -16,115,000                                                
        accumulated deficit
         -2,396,746,000 -2,249,808,000 -2,145,459,000 -2,004,979,000 -1,938,714,000 -1,795,911,000 -1,786,648,000 -1,639,238,000 -1,553,948,000 -1,429,625,000 -1,377,195,000 -1,330,203,000 -1,225,068,000 -1,159,903,000 -1,384,516,000 -1,302,050,000 -1,221,175,000 -1,249,368,000 -909,098,000 -878,154,000 -846,309,000 -707,534,000 -857,563,000 -883,726,000 -882,850,000 -967,293,000 -1,287,369,000 -1,282,809,000 -1,242,454,000 -1,187,398,000 -1,190,144,000 -1,189,167,000 -1,177,960,000 -1,181,428,000 -1,207,293,000 -1,214,644,000 -1,157,789,000 -1,094,872,000 -1,023,439,000 -987,663,000 -1,023,311,000 -1,006,594,000 -1,037,647,000 -1,010,971,000 -998,890,000                          -840,795,000              
        total stockholders' equity
      489,089,000 617,967,000 631,724,000                                          257,780,000  366,860,000                                         
        total liabilities and stockholders’ equity
      3,523,836,000 3,033,091,000 2,985,133,000 2,812,948,000 3,003,675,000 3,081,099,000 2,691,128,000 2,763,928,000 2,990,072,000 2,933,971,000 2,971,131,000 2,885,221,000 2,533,876,000 2,421,971,000 2,456,133,000 2,519,092,000 2,611,690,000 2,414,893,000 2,497,069,000 2,248,551,000 2,389,755,000 3,095,701,000 3,078,950,000 3,090,913,000 3,233,112,000 2,894,989,000 2,877,765,000 2,835,889,000 2,667,784,000 2,247,913,000 2,247,315,000 1,299,560,000 1,322,024,000 1,252,561,000 1,090,831,000 1,083,996,000 912,467,000 843,586,000 811,109,000 875,819,000 956,105,000 988,005,000 976,258,000 955,433,000  793,803,000  834,616,000 847,156,000 881,916,000 788,651,000 552,961,000 545,686,000 485,681,000 472,394,000 470,807,000 484,894,000 505,785,000 529,572,000 505,942,000 550,477,000 575,858,000 606,351,000 599,723,000 657,184,000 680,578,000 709,161,000 724,506,000           150,637,000 166,373,000 177,382,000   255,271,000 279,962,000 312,726,000  
        0 percent convertible senior notes
       630,911,000 630,118,000 629,326,000 628,535,000 627,745,000 626,955,000 626,167,000 625,380,000 624,594,000 623,809,000 623,025,000 622,242,000 621,460,000 620,678,000 619,898,000 619,119,000 618,341,000 617,399,000                                                                     
        1.75 percent convertible senior notes
       567,123,000 566,420,000 565,721,000 565,026,000 564,335,000 563,647,000 562,964,000 562,285,000 561,609,000 560,937,000                                                                             
        accumulated other comprehensive income
                                      -31,759,000    -30,358,000    -13,565,000 -17,957,000 18,411,000 47,114,000 39,747,000 16,894,000 24,719,000 29,000,000 21,080,000 29,021,000   12,480,000      399,000 689,000 949,000 1,162,000 941,000 1,379,000 2,153,000 3,678,000 2,324,000 473,000 982,000  2,730,000 2,123,000 511,000 418,000 2,081,000 4,278,000 2,045,000 2,114,000 5,739,000 3,178,000 2,349,000 141,000 544,000 956,000  4,747,000  
        total stockholders’ equity
         475,726,000 588,351,000 662,468,000 263,698,000 296,515,000 386,686,000 315,460,000 428,301,000 486,570,000 572,887,000 594,361,000 624,726,000 709,574,000 771,737,000 530,536,000 582,674,000 680,564,000 843,347,000 1,606,384,000 1,594,795,000 1,570,411,000 1,684,547,000 1,497,966,000 1,457,202,000 1,387,420,000 1,187,160,000 840,144,000 817,436,000 387,101,000 418,719,000 397,668,000 215,571,000 201,806,000 99,565,000 139,639,000 111,213,000 158,162,000 200,790,000 245,414,000 300,320,000 275,851,000  344,772,000  374,102,000 378,390,000 401,446,000 401,081,000 201,091,000 182,766,000 170,277,000 154,314,000 150,872,000 171,434,000 186,825,000 212,217,000 227,703,000 244,542,000 253,709,000 262,229,000 284,437,000 302,065,000 304,825,000 305,817,000 302,670,000 67,092,000 68,078,000 59,023,000 54,621,000 232,000 47,284,000 56,898,000 68,563,000 1,577,000 6,713,000  2,665,000 4,040,000    11,611,000 47,554,000  
        0.125 percent convertible senior notes
           44,467,000 44,422,000 44,377,000 44,332,000 44,287,000 114,081,000 545,053,000 544,504,000 543,955,000 543,407,000 542,860,000 542,314,000 541,768,000 541,223,000 540,679,000 455,719,000 450,386,000 445,150,000 439,996,000 434,711,000                                                               
        long-term mortgage debt
                 8,811,000 8,847,000 58,978,000 59,222,000 59,462,000 59,713,000 59,955,000 60,019,000 60,002,000 59,984,000 59,966,000 59,948,000 59,930,000 59,913,000 59,896,000 59,878,000 59,860,000 59,842,000 59,825,000 59,807,000 59,789,000 59,771,000 59,750,000                                                      
        patents
                   29,605,000 29,054,000 29,295,000 29,005,000 30,038,000 29,373,000 28,795,000 27,937,000 28,274,000 27,700,000 26,750,000 25,674,000 26,985,000 26,056,000 25,220,000 24,032,000 24,027,000 23,452,000 22,914,000 22,004,000 21,908,000 21,362,000 21,175,000 20,365,000 20,929,000 21,152,000 20,144,000 19,316,000 19,489,000 19,060,000 17,915,000 17,186,000 16,879,000 16,729,000 16,383,000 15,517,000 20,810,000 20,149,000 19,604,000 18,646,000 18,180,000 17,701,000 17,071,000 16,259,000 16,994,000 16,444,000 15,773,000 15,821,000 16,208,000 16,152,000 15,919,000 15,909,000 15,851,000 15,709,000 16,616,000 16,260,000 18,126,000 18,538,000 18,390,000 17,605,000 17,376,000 17,037,000 16,836,000 17,042,000 18,688,000 18,875,000 18,773,000 20,148,000 19,869,000 19,745,000 25,981,000 24,691,000 23,556,000  
        current portion of long-term obligations
                   4,970,000 4,732,000 4,206,000 3,526,000 3,109,000 7,972,000 7,688,000 7,301,000    2,026,000 2,060,000 14,432,000 14,500,000 13,749,000 14,472,000 1,164,000 47,000 1,621,000 60,000 21,476,000 56,000 1,185,000 49,000 8,608,000 8,826,000 9,029,000 773,000 1,225,000 2,058,000 2,882,000 3,667,000 4,207,000 4,308,000 4,408,000 4,649,000 4,853,000 4,508,000 4,879,000 5,182,000 5,313,000 2,941,000 3,390,000 4,157,000 4,911,000 5,145,000 5,645,000 5,138,000 4,977,000 4,020,000 4,270,000 4,106,000 2,995,000 2,876,000 2,065,000  3,669,000 5,471,000 7,457,000 7,474,000 7,482,000 7,514,000 7,684,000 7,742,000 7,863,000 7,835,000 8,314,000 9,106,000 9,674,000 10,029,000 10,260,000 10,355,000  
        long-term obligations, less current portion
                   25,107,000 25,093,000 25,710,000 26,378,000 21,628,000 22,055,000 22,943,000 23,409,000 15,884,000 15,057,000 15,043,000 15,543,000 16,016,000 16,091,000 16,305,000 4,914,000 5,138,000 14,539,000 12,946,000 12,974,000 13,096,000 15,095,000 15,043,000 14,926,000 14,892,000 2,420,000 2,372,000 2,341,000 7,312,000 7,392,000 7,510,000 7,669,000 4,039,000 4,510,000 5,523,000 6,542,000 6,384,000 7,382,000 6,498,000 7,402,000 8,404,000 9,503,000 3,603,000 4,125,000 4,724,000 5,465,000 4,938,000 5,720,000 4,304,000 5,620,000 4,474,000 11,478,000 12,532,000 10,643,000 11,370,000 9,938,000 5,478,000 5,415,000 391,000 2,222,000 4,053,000 5,889,000 7,822,000 9,736,000 11,173,000 12,942,000 14,915,000 16,845,000 119,432,000 118,358,000 104,369,000 99,033,000 94,558,000  
        1 percent convertible senior notes
                       61,936,000 61,876,000 247,292,000 293,161,000 288,579,000 284,083,000 279,666,000 275,333,000 596,355,000 586,797,000 577,415,000 568,215,000 559,184,000 550,328,000 541,635,000 533,111,000 524,744,000 516,539,000 508,411,000 500,511,000 356,440,000 350,800,000 345,265,000 347,214,000 342,136,000 337,158,000 332,274,000 327,486,000                                           
        current portion of 1 percent convertible senior notes
                         61,816,000                                                                    
        long-term deferred tax assets
                           307,737,000 305,980,000 309,614,000 305,557,000 284,997,000 276,360,000 277,247,000 290,796,000                                                           
        total ionis stockholders’ equity
                          843,347,000 1,383,149,000 1,377,175,000 1,360,239,000 1,471,094,000 1,336,293,000 1,269,384,000 1,207,651,000 1,048,079,000 710,550,000 696,255,000 301,391,000  307,968,000                                                      
        noncontrolling interest in akcea therapeutics, inc.
                           223,235,000 217,620,000 210,172,000 213,453,000 161,673,000 187,818,000 179,769,000 139,081,000 129,594,000 121,181,000 85,710,000 87,847,000 89,700,000                                                      
        current portion of long-term obligations and other current liabilities
                           5,849,000 4,966,000 4,150,000                                                                
        long-term financing liability for leased facility
                                        51,023,000 72,397,000 72,359,000 72,322,000 72,286,000 72,251,000 72,217,000 72,091,000 71,968,000 71,848,000 71,731,000 71,616,000 71,504,000 71,395,000 71,288,000 71,097,000 70,910,000 70,728,000 70,550,000 70,375,000 70,205,000 70,039,000 69,877,000 68,895,000 58,722,000                             
        total ionis stockholders' equity
                                      330,872,000                                                       
        investment in regulus therapeutics inc.
                                          2,414,000 9,382,000 8,217,000 19,703,000 24,792,000 18,594,000 60,604,000 93,446,000 81,881,000 47,426,000 56,678,000 63,586,000 52,096,000 65,004,000 62,190,000 44,863,000 33,622,000 5,563,000 5,563,000 5,400,000 4,424,000 3,145,000 2,759,000 1,726,000 870,000 5,000,000 4,070,000 127,000                        
        2¾ percent convertible senior notes
                                          124,000 51,570,000 50,873,000 50,190,000 50,361,000 49,754,000 49,160,000 48,579,000 48,014,000 155,437,000  152,005,000                                        
        licenses
                                               1,285,000 1,753,000 2,221,000 2,690,000 3,160,000 3,631,000 4,101,000 4,572,000 5,048,000 5,528,000 6,010,000 6,579,000 7,191,000 7,806,000 8,421,000 9,036,000 10,562,000 11,129,000 11,696,000 12,288,000 12,893,000 13,454,000 14,007,000 14,542,000 15,128,000 15,714,000 16,276,000 16,861,000 17,447,000 17,958,000 18,516,000 19,684,000 20,267,000 20,851,000 21,435,000 22,018,000 22,602,000 23,186,000 23,770,000 24,353,000 24,937,000 25,521,000 26,619,000 27,200,000 27,782,000  
        liabilities and stockholders' equity
                                                                                             
        stockholders' equity:
                                                                                             
        total liabilities and stockholders' equity
                                                  955,809,000  817,777,000                                         
        23/4 percent convertible senior notes
                                                    153,700,000   148,705,000 147,099,000 145,533,000  142,500,000                                  
        23¤4 percent convertible senior notes
                                                      150,334,000    143,990,000                                   
        accrued income taxes
                                                       4,935,000 8,727,000 3,582,000                                    
        accumulated other comprehensive gain
                                                        26,986,000 17,784,000  846,000 968,000                                 
        25¤8 percent convertible subordinated notes
                                                                                             
        25/8 percent convertible subordinated notes
                                                            146,031,000 143,717,000 141,448,000 139,239,000  134,964,000 132,895,000    125,100,000                       
        25/8% convertible subordinated notes
                                                                137,073,000   130,882,000 128,907,000 126,986,000  123,265,000 121,464,000 119,713,000 162,500,000 162,500,000 162,500,000   162,500,000              
        long-term financing obligation
                                                                 10,147,000 10,147,000 10,147,000 10,147,000 10,147,000                        
        total isis pharmaceuticals, inc. stockholders’ equity
                                                                  244,542,000 253,709,000 262,229,000 284,437,000 291,722,000 292,995,000 292,851,000 288,846,000                    
        noncontrolling interest in regulus therapeutics inc.
                                                                      10,343,000 11,830,000 12,966,000 13,824,000 4,737,000                   
        assets from discontinued operations
                                                                                             
        liabilities from discontinued operations
                                                                                             
        noncontrolling interest in ibis biosciences, inc. — discontinued operations
                                                                                             
        assets held for sale
                                                                          15,462,000                   
        liabilities held for sale
                                                                          7,870,000                   
        noncontrolling interest in ibis biosciences, inc. — held for sale.
                                                                          32,419,000                   
        total liabilities, noncontrolling interest and stockholders’ equity
                                                                          574,150,000 584,692,000 609,399,000 405,424,000 213,003,000 263,255,000 349,904,000 255,907,000 187,768,000 201,919,000          
        derivative instrument related to abbott’s call option
                                                                           1,069,000 5,147,000                 
        noncontrolling interest in regulus therapeutics llc
                                                                           6,315,000 7,523,000 8,488,000 9,952,000               
        noncontrolling interest in ibis biosciences, inc.
                                                                           33,359,000 33,625,000 14,366,000                
        debt issuance costs
                                                                             4,539,000 4,938,000 5,136,000 6,110,000             
        derivative instruments related to abbott’s subscription right and call option
                                                                             3,455,000                
        25¤8% convertible subordinated notes
                                                                             162,500,000   162,500,000             
        5 1/2% convertible subordinated notes
                                                                                  125,000,000 125,000,000 125,000,000         
        2 5/8% convertible subordinated notes
                                                                              162,500,000               
        noncontrolling interest in symphony genisis, inc.
                                                                                 29,339,000            
        51/2% convertible subordinated notes
                                                                                     125,000,000 125,000,000 125,000,000    125,000,000  
        noncontrolling interest in symphony genisis, inc
                                                                               14,930,000 22,533,000  32,019,000 38,752,000          
        inventory
                                                                                1,093,000 861,000 632,000 886,000 749,000 951,000 917,000 1,071,000 2,722,000 20,090,000 16,074,000 14,548,000  
        current portion of 51¤2% convertible subordinated notes
                                                                                80,825,000             
        51¤2% convertible subordinated notes
                                                                                 125,000,000            
        long-term investments
                                                                                  2,125,000 2,125,000 6,754,000  5,099,000 3,296,000 3,304,000 4,407,000 5,354,000 11,375,000  
        stockholders’ equity
                                                                                             
        investments in corporate securities
                                                                                     5,641,000        
        long-term deferred contract revenue, less current portion
                                                                                      92,000 230,000 378,000 644,000 2,186,000 5,971,000  
        deferred compensation
                                                                                             
        common stock warrants
                                                                                      7,500,000       
        liabilities and stockholders’ deficit
                                                                                             
        stockholders’ deficit:
                                                                                             
        total stockholders’ deficit
                                                                                             
        total liabilities and stockholders’ deficit
                                                                                       146,526,000 175,648,000     
        5 ½% convertible subordinated notes
                                                                                        125,000,000 125,000,000 125,000,000   
        series b convertible exchangeable 5% preferred stock, 0.001 par value...
                                                                                             
        accretion of series b preferred stock dividends
                                                                                           2,741,000  
        series b convertible exchangeable 5% preferred stock, .001 par value...
                                                                                           12,015,000  
        common stock, .001 par value...
                                                                                           56,000  
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 
                                                                                              
          operating activities:
                                                                                              
          net loss
           -146,938,000 -104,349,000 -140,480,000 -66,265,000 -142,803,000 -9,263,000 -147,410,000 -85,290,000 -124,323,000 -52,430,000 -46,992,000 -105,135,000 -65,165,000  -82,466,000 -80,875,000 -89,869,000             -4,660,000 -4,897,000   25,865,000   -62,917,000 -71,433,000   -16,717,000 31,053,000 -26,676,000 -12,081,000 -31,280,000                                       
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                              
          depreciation
        3,259,000 2,255,000 2,266,000 2,228,000 2,240,000 2,361,000 2,466,000 2,547,000 2,544,000 2,523,000 2,621,000 2,604,000 3,027,000 3,817,000 3,783,000 3,701,000 3,822,000 3,714,000 4,034,000 3,917,000 3,652,000 3,353,000 3,127,000 3,233,000 3,195,000 3,092,000 3,180,000 3,073,000 3,056,000 2,792,000 2,495,000 2,363,000 570,000 2,148,000 2,010,000 1,980,000 1,889,000 1,877,000 1,874,000 1,841,000 1,794,000 1,784,000 1,835,000 1,571,000 1,589,000 1,650,000 1,580,000 1,561,000                                       
          amortization of right-of-use operating lease assets
        3,444,000 1,626,000 2,590,000 2,587,000 2,568,000 2,515,000 2,492,000 2,465,000 2,413,000 2,408,000 2,431,000 2,395,000 3,392,000 670,000 698,000 602,000 550,000 390,000 387,000 394,000 375,000 572,000 391,000 393,000 109,000 398,000                                                             
          amortization of other assets
        638,000 621,000 598,000 582,000 459,000 617,000 621,000 639,000 655,000 660,000 637,000 607,000                                                                           
          amortization of discount on investments
           -7,108,000  -9,140,000 -9,886,000 -9,257,000                                                                               
          amortization of debt issuance costs
        1,968,000 1,652,000 1,646,000 1,642,000 1,674,000 1,678,000 1,671,000 1,667,000 1,664,000 1,700,000 1,480,000 1,486,000 1,338,000 1,347,000 1,345,000 1,343,000 1,372,000 1,393,000 1,333,000 860,000 694,000 648,000 641,000 595,000 494,000 491,000 483,000 474,000 467,000 490,000 412,000 441,000 414,000 405,000 401,000 396,000 315,000 309,000 303,000 298,000 292,000 286,000 280,000 275,000 183,000 140,000 137,000 135,000                                       
          non-cash royalty revenue related to sale of royalties
           -12,891,000 -14,559,000 -14,186,000 -9,613,000 -6,623,000 -16,814,000 -15,252,000                                                                             
          non-cash interest related to sale of future royalties
        17,707,000 17,799,000 18,495,000 18,670,000 18,516,000 18,381,000 18,143,000 17,806,000 17,697,000 17,626,000 17,552,000 15,363,000                                                                           
          stock-based compensation expense
        43,320,000 31,146,000 29,690,000 29,718,000 36,148,000 31,984,000 30,728,000 31,340,000 26,336,000 25,963,000 26,562,000 26,948,000 25,689,000 23,837,000 24,502,000 26,236,000 22,259,000 30,537,000 30,021,000 37,861,000 95,040,000 45,844,000 48,443,000 40,790,000 35,010,000 24,127,000 41,932,000 45,505,000 34,102,000 34,883,000 33,876,000 28,451,000 22,333,000 21,472,000 21,258,000 20,912,000  17,586,000 19,261,000 20,103,000  14,997,000 13,605,000 13,305,000  8,118,000 7,707,000 7,069,000                                       
          gain on early retirement of debt
                 -2,097,000                                                                             
          inducement expense related to early retirement of debt
                                                                                              
          non-cash losses related to disposal of property, plant and equipment
            7,290,000    2,003,000 14,441,000   3,000 1,000 527,000                                                                       
          loss on investments
          18,622,000 1,849,000 2,572,000 -881,000 3,533,000 -2,332,000 160,000 1,730,000 -830,000 529,000  174,000                                                                         
          non-cash losses related to other assets
          236,000 61,000 2,137,000 506,000 256,000 133,000 812,000 279,000 125,000 445,000                                                                           
          changes in operating assets and liabilities:
                                                                                              
          contracts receivable
        -41,451,000 27,972,000 -12,873,000 52,481,000 -74,260,000 9,331,000 -22,119,000 92,638,000 44,755,000 -114,560,000 -13,878,000 11,624,000 -18,893,000 106,000 19,371,000 35,774,000 -52,828,000 14,936,000 -607,000 52,807,000 -37,227,000 -11,143,000 771,000 34,429,000 -13,958,000 -17,461,000 -21,163,000 4,908,000 -628,000 2,030,000 20,096,000 26,097,000 -20,031,000 7,691,000 18,742,000 38,686,000 -99,499,000 -7,798,000 15,734,000 -5,124,000 -9,530,000 1,438,000 23,670,000 -23,031,000 22,410,000 15,628,000 -32,118,000 1,279,000                                       
          inventories
           1,010,000 -5,044,000 271,000 1,536,000 -1,834,000 -2,791,000 -96,000 -3,338,000 -167,000 -1,388,000 -834,000 4,221,000 774,000 -1,876,000 1,169,000 -1,900,000 -234,000 207,000 1,550,000 -837,000 -2,181,000 1,195,000 -870,000 -3,261,000 -2,475,000 -204,000 689,000 -7,000 922,000 -1,531,000 -1,947,000 297,000 688,000 1,830,000 -1,651,000 -1,148,000 379,000 -316,000 199,000 57,000 -549,000 795,000 691,000 -239,000 496,000                                       
          other current and long-term assets
           -12,366,000 -17,702,000 1,226,000 -22,762,000 13,381,000 -11,515,000 1,371,000 -25,008,000 5,312,000 -23,694,000 -949,000 7,183,000 -7,222,000 -11,235,000 1,179,000 -7,302,000 16,481,000 -4,328,000 -6,711,000 -8,468,000 9,532,000 -21,282,000 -17,005,000 -8,174,000 1,802,000 -2,775,000 -21,396,000 -16,599,000 11,422,000 -23,501,000 4,505,000 -25,294,000 -14,077,000 1,686,000 2,549,000 171,000 -2,747,000 8,938,000 1,371,000 -12,177,000 -2,451,000 -511,000 -545,000 202,000 -896,000                                       
          accounts payable
           -25,968,000 35,205,000 -2,151,000 -3,195,000 -13,869,000 20,581,000 -17,979,000 15,812,000 -10,295,000 -4,513,000 8,279,000 -5,550,000 2,878,000 4,737,000 -7,918,000 6,750,000 -9,569,000 8,215,000 3,969,000 -15,350,000 411,000 2,421,000 -2,660,000 1,087,000 -17,191,000 12,951,000 633,000 -1,095,000 -13,144,000 3,491,000 8,323,000 -10,502,000 472,000 4,523,000 -2,764,000 -1,019,000 -11,417,000 8,349,000 9,059,000 -5,502,000 -2,695,000 3,410,000 -577,000 4,637,000 -2,646,000                                       
          income taxes
        2,612,000 20,000 -45,000 92,000 -7,000 -243,000 -1,926,000 59,000             -7,605,000                                                                  
          accrued compensation
           -43,039,000 29,056,000 5,540,000 13,481,000 -46,190,000 33,946,000 4,459,000 11,162,000 -31,018,000 18,768,000 5,425,000 8,460,000 -22,285,000 6,490,000 2,098,000 959,000 -36,465,000 37,338,000 5,568,000 6,385,000 -20,920,000 12,953,000 4,355,000 3,785,000 -13,004,000 5,009,000 9,170,000 2,923,000 -12,985,000 9,964,000 4,889,000 2,031,000 -15,919,000 13,178,000 3,567,000 1,104,000 -9,728,000 6,557,000 1,593,000 2,504,000 -6,891,000 5,138,000 734,000 2,102,000 -7,840,000                                       
          accrued liabilities and other liabilities
        -82,351,000                                                                                      
          deferred contract revenue
           -13,718,000 -14,301,000 -32,973,000 -62,727,000 -46,818,000 -61,784,000 103,446,000 -14,658,000 -13,037,000 -15,822,000 -14,422,000 -15,986,000 -25,018,000 -11,219,000 -21,134,000 -26,759,000 -23,717,000 -1,940,000 -14,615,000 -39,676,000 -19,679,000 -22,254,000 -23,386,000 -33,290,000 -40,353,000 47,086,000 -36,646,000 511,602,000 -27,788,000 -5,396,000 -27,114,000 -12,226,000 81,431,000 -15,892,000 -12,539,000 -15,870,000 -14,849,000 -15,608,000 50,823,000 -5,256,000 -7,841,000 17,169,000 -9,606,000 -13,236,000 -5,742,000                                       
          net cash from operating activities
          151,338,000 -150,775,000 -116,139,000 -114,990,000 -119,880,000 -149,938,000 32,865,000 -109,022,000 -97,364,000 -133,992,000 -200,195,000 -24,429,000 -18,096,000 -31,650,000 203,687,000 -55,574,000 -62,652,000 -54,662,000 97,977,000 -10,357,000 -44,144,000 -7,584,000 277,932,000 -12,806,000 -27,111,000 107,705,000 115,490,000 -26,004,000 500,237,000 13,165,000 20,401,000 28,720,000 2,363,000 122,665,000 -25,959,000 23,406,000 -33,784,000 -75,768,000 -37,474,000 36,218,000 65,207,000 -42,826,000 70,684,000 1,944,000 -34,015,000 -32,328,000 -14,492,000 65,821,000 22,740,000 -10,576,000 36,035,000 -24,871,000 -2,577,000 -6,711,000  -24,448,000 -26,177,000 -39,842,000  -21,429,000 5,030,000 -21,691,000  -32,193,000 -10,370,000 -34,346,000 -19,176,000 -21,549,000 177,642,000 75,114,000 12,404,000 -1,371,000 -20,795,000         -22,089,000 -31,418,000 -23,467,000 
          capital expenditures
          -12,577,000 -25,497,000 -9,056,000 -6,234,000 -4,493,000 819,000 -2,141,000 -12,011,000 -10,472,000 -4,139,000 -5,542,000 -3,335,000 -2,705,000 -2,502,000 -3,323,000 -4,358,000 -1,772,000 -5,149,000 -11,793,000 -9,098,000 -9,080,000 -7,762,000 -15,900,000 -4,014,000 -3,229,000 -1,387,000 -3,244,000 -6,634,000 -2,343,000 -8,262,000 -17,049,000 -6,216,000 -3,237,000 -2,794,000 -1,050,000 -2,635,000 -628,000 -2,411,000 -1,341,000 -3,062,000 -878,000 -3,549,000 -869,000 -1,697,000 -1,403,000            
          free cash flows
          151,338,000 -163,352,000 -141,636,000 -124,046,000 -126,114,000 -154,431,000 33,684,000 -111,163,000 -109,375,000 -144,464,000 -204,334,000 -29,971,000 -21,431,000 -34,355,000 201,185,000 -58,897,000 -67,010,000 -56,434,000 92,828,000 -22,150,000 -53,242,000 -16,664,000 270,170,000 -28,706,000 -31,125,000 104,476,000 114,103,000 -29,248,000 493,603,000 10,822,000 12,139,000 11,671,000 -3,853,000 119,428,000 -28,753,000 22,356,000 -36,419,000 -76,396,000 -39,885,000 34,877,000 62,145,000 -43,704,000 67,135,000 1,075,000 -35,712,000 -33,731,000 -14,492,000 65,821,000 22,740,000 -10,576,000 36,035,000 -24,871,000 -2,577,000 -6,711,000  -24,448,000 -26,177,000 -39,842,000  -21,429,000 5,030,000 -21,691,000  -32,193,000 -10,370,000 -34,346,000 -19,176,000 -21,549,000 177,642,000 75,114,000 12,404,000 -1,371,000 -20,795,000         -22,089,000 -31,418,000 -23,467,000 
          investing activities:
                                                                                              
          purchases of short-term investments
           -311,068,000 -333,631,000 -715,360,000 -284,866,000 -519,001,000 -417,714,000 -420,738,000 -244,084,000 -688,278,000 -261,981,000 -560,596,000 -200,340,000 -462,855,000 -193,230,000 -190,242,000 -410,670,000 -330,051,000 -193,779,000 -400,347,000 -431,909,000 -544,375,000 -329,000,000 -568,452,000 -556,493,000 -492,781,000 -638,400,000 -507,433,000 -557,745,000 -91,157,000 -288,155,000 -241,739,000 -81,731,000 -266,185,000 -66,426,000 -152,672,000 -40,448,000 -41,366,000 -95,391,000 -157,506,000 -200,357,000 -40,213,000 -141,303,000 -71,384,000 -110,011,000 -69,185,000                                       
          proceeds from sale of short-term investments
        395,119,000 422,206,000 385,790,000 494,755,000 429,888,000 370,871,000 367,577,000 600,836,000 390,952,000 492,690,000 326,671,000 374,363,000 225,051,000 383,726,000 201,538,000 178,837,000  323,998,000 315,952,000 411,907,000  515,260,000 522,821,000 459,352,000                                                               
          purchases of property, plant and equipment
           -12,577,000 -25,497,000 -9,056,000 -6,234,000 -4,493,000 819,000 -2,141,000 -12,011,000 -10,472,000 -4,139,000 -5,542,000 -3,335,000 -2,705,000 -2,502,000 -3,323,000 -4,358,000 -1,772,000 -5,149,000 -11,793,000 -9,098,000 -9,080,000 -7,762,000 -15,900,000 -4,014,000 -3,229,000 -1,387,000 -3,244,000 -6,634,000 -2,343,000 -8,262,000 -17,049,000 -6,216,000 -3,237,000 -2,794,000 -1,050,000 -2,635,000 -628,000 -2,411,000 -1,341,000 -3,062,000 -878,000 -3,549,000 -869,000 -1,697,000 -1,403,000                                       
          acquisition of licenses and other assets
           -651,000 -2,547,000 12,750,000 -14,027,000 -1,237,000 -792,000 -1,100,000 -1,061,000 -1,253,000 -867,000 -1,518,000 -1,167,000 -826,000   -1,954,000 -1,228,000 -1,725,000 -1,180,000 -2,119,000 -904,000 -1,181,000 -1,886,000 -1,278,000 -1,032,000 -727,000 -1,463,000 -1,116,000 -738,000 -804,000 -696,000 -610,000 -983,000 -1,047,000 -1,179,000 -1,813,000 -382,000 -722,000 -1,585,000 -1,030,000 -719,000 -1,143,000 -652,000 -1,458,000 -333,000                                       
          net cash from investing activities
         91,338,000 -120,068,000 170,459,000 68,213,000 -340,795,000 62,450,000 76,105,000 -26,713,000 68,711,000 69,515,000 -325,640,000 212,147,000 -183,930,000 -3,304,000 -287,549,000 95,109,000 121,971,000 -101,030,000 78,856,000 187,849,000 101,940,000 79,695,000 -95,007,000 138,191,000 1,396,000 -110,687,000 -70,174,000 -326,207,000 -307,671,000 -375,171,000 79,486,000 -54,212,000 -150,099,000 14,695,000 -168,675,000 20,801,000 -57,088,000 53,457,000 39,429,000 27,964,000 -29,279,000 -95,387,000 36,650,000 -50,788,000 -24,487,000 -32,394,000 24,821,000     5,035,000 -10,608,000      56,718,000 -7,242,000   14,958,000                -32,794,000    10,744,000 19,289,000 29,059,000 
          financing activities:
                                                                                              
          proceeds from issuance of common stock through equity plans
        107,817,000 81,259,000 1,287,000 2,241,000 402,000                                                                                  
          proceeds from issuance of common stock in public offering
            27,000                                                                                  
          proceeds from issuance of 0 percent convertible senior notes due 2030
                                                                                              
          0 percent convertible senior notes due 2030 issuance costs
                                                                                              
          repurchase of 200 million principal amount of 0 percent convertible senior notes due 2026
                                                                                              
          repayment of 0.125 percent convertible senior notes due 2024
                                                                                              
          proceeds from issuance of 1.75 percent convertible senior notes due 2028
                                                                                              
          1.75 percent convertible senior notes due 2028 issuance costs
                                                                                              
          proceeds from sale of future royalties
                500,000,000                                                                           
          payments of transaction costs related to sale of future royalties
                -10,434,000                                                                           
          proceeds from real estate transaction
                                                                                             
          principal payments on mortgage debt
           -42,000 -41,000 -48,000 -39,000 -39,000  -47,000 -36,000 -39,000                                                                           
          net cash from financing activities
        591,176,000 81,218,000 1,247,000 2,199,000 -44,116,000 496,047,000 2,557,000 23,570,000 40,724,000 -32,267,000 143,538,000 492,087,000 -51,019,000 1,834,000 1,215,000 -7,325,000 -62,490,000 1,458,000 314,542,000 -7,577,000 -521,480,000 10,937,000 8,435,000 -94,501,000 19,225,000 -13,174,000 34,510,000 59,460,000 9,646,000 8,076,000 452,919,000 5,224,000 4,257,000 147,572,000 1,712,000 75,546,000 5,568,000 5,423,000 -476,000 879,000 11,714,000 167,000 1,319,000 11,526,000 49,882,000 1,682,000 -1,288,000 9,312,000 3,327,000 17,355,000 197,992,000 9,050,000 -1,151,000 34,397,000       2,675,000 -401,000 2,354,000 68,000 2,708,000 5,127,000 835,000 193,331,000 9,318,000           -2,410,000    2,420,000 2,743,000 1,048,000 
          effects of exchange rates on cash
        -43,000 -82,000 595,000 232,000 -486,000 350,000 -23,000 -114,000 330,000 -152,000 70,000 104,000 546,000 -399,000 -411,000 -154,000 -68,000 -21,000 104,000 -126,000 259,000                                                                  
          net increase in cash and cash equivalents
        33,919,000 41,037,000 33,112,000 22,115,000 -92,528,000 40,612,000 -54,896,000 -50,377,000 47,206,000 -72,730,000 115,759,000 32,559,000 -38,521,000 -206,924,000 -20,596,000 -326,678,000 236,238,000 67,834,000 150,964,000 16,491,000   43,986,000 -197,092,000 435,348,000 -24,584,000 -103,288,000 96,991,000 -201,071,000 -325,599,000 577,985,000 97,875,000 -29,554,000 26,193,000 18,770,000 29,536,000        5,350,000 69,778,000 -20,861,000 -67,697,000 1,805,000 -96,435,000 -40,132,000   39,919,000 -1,082,000      16,148,000        30,072,000 -40,697,000 -181,038,000 173,784,000 133,322,000  -50,459,000 68,909,000 10,276,000          6,640,000 
          cash and cash equivalents at beginning of year
                                                                                              
          cash and cash equivalents at end of year
                                                                                              
          supplemental disclosures of cash flow information:
                                                                                              
          interest paid
        5,383,000 185,000 5,122,000 92,000  145,000 5,474,000 95,000  423,000 440,000 89,000  660,000 950,000 594,000  661,000 2,272,000 594,000  607,000 2,492,000 601,000  698,000 4,109,000 667,000  681,000 4,109,000 644,000  413,000 3,501,000 106,000  881,000 3,383,000 31,000  856,000 3,340,000 37,000  57,000 2,837,000 83,000  102,000 2,864,000 113,000  3,309,000 64,000 2,211,000 157,000 2,249,000 123,000 2,275,000 195,000 2,281,000 132,000 2,281,000 217,000 2,270,000 146,000 2,250,000 125,000 2,174,000 64,000 2,244,000 2,606,000 2,521,000 860,000 3,778,000 381,000 3,863,000 409,000 3,859,000 516,000 3,980,000 522,000 333,000 3,955,000 570,000 
          income taxes paid (refunds received)
                                                                                              
          supplemental disclosures of non-cash investing and financing activities:
                                                                                              
          right-of-use assets obtained in exchange for lease obligations
        79,686,000                                                                                     
          amounts accrued for capital and patent expenditures
        333,000 -315,000 460,000  787,000 529,000 924,000  90,000 -2,807,000 3,058,000  1,911,000 -223,000 1,344,000  1,533,000 -1,598,000 1,876,000  115,000 1,558,000 4,903,000  178,000 1,209,000 1,864,000  -349,000 554,000 2,091,000  1,770,000 57,000 1,648,000  859,000 -862,000 2,524,000  -719,000 -32,000 1,198,000  2,751,000 -1,053,000 1,506,000  -220,000 340,000 715,000  160,000 -165,000 844,000 -476,000 298,000 -142,000 1,222,000 -5,000 96,000 -5,000 836,000 -370,000 326,000 -4,102,000 5,016,000 216,000 1,190,000 95,000 1,372,000 -519,000 101,000 443,000            
          inducement related to repurchase of 0 percent convertible senior notes due 2026
                                                                                              
          cash and cash equivalents at beginning of period
         242,077,000  399,266,000  276,472,000  869,191,000  397,664,000  683,287,000  278,820,000  129,630,000  84,685,000  128,797,000  142,998,000  159,973,000  124,482,000  65,477,000  70,052,000  105,255,000  223,985,000  138,614,000     47,235,000 3,650,000  27,250,000 33,117,000 
          cash and cash equivalents at end of period
         41,037,000 33,112,000 264,192,000  40,612,000 -54,896,000 348,889,000  -72,730,000 115,759,000 309,031,000  -206,924,000 -20,596,000 542,513,000  67,834,000 150,964,000 414,155,000  102,878,000 43,986,000 486,195,000  -24,584,000 -103,288,000 375,811,000  -325,599,000 577,985,000 227,505,000  26,193,000 18,770,000 114,221,000  -28,259,000 19,197,000 93,337,000  7,106,000 -28,861,000 148,348,000  -20,861,000 -67,697,000 161,778,000  -40,132,000 188,890,000 107,650,000  -1,082,000 29,254,000 56,391,000  -29,759,000 -1,178,000 86,200,000  54,084,000 -52,552,000 98,590,000  -66,496,000 -38,268,000 254,057,000  -181,038,000 173,784,000 271,936,000       1,711,000  45,234,000 -4,018,000 12,006,000 -8,925,000 -9,386,000 39,757,000 
          accrued liabilities and other current liabilities
          3,202,000 333,000 -14,332,000 10,540,000 3,686,000 -42,887,000 18,713,000 13,343,000 -9,102,000 -28,460,000 8,432,000 -6,907,000 34,697,000 10,473,000 11,145,000 -4,612,000 -3,009,000 -11,905,000                                                                   
          income taxes paid
           -400,000  80,000 1,979,000 13,000  204,000 217,000 293,000  2,000    2,000  23,483,000 46,000 3,000                          2,000      2,000  7,700,000 3,000,000 3,400,000 6,455,000 350,000                   
          amortization of premium (discount) on investments
                -8,489,000 -7,915,000 -7,439,000 -5,042,000        4,023,000 3,709,000 3,970,000 2,780,000 1,062,000 -421,000 -1,901,000                                                             
          loss on sale of real estate assets
                                                                                              
          proceeds from sale of real estate assets
                                                                                              
          repayment of 0.125 percent convertible senior notes
                                                                                              
          proceeds from issuance of 1.75 percent convertible senior notes
                                                                                            
          1.75 percent convertible senior notes issuance costs
                -517,000                                                                             
          payments of tax withholdings related to vesting of employee stock awards and exercise of employee stock options
                    -736,000 -645,000 -399,000 -9,173,000 -440,000 -490,000 -458,000 -15,337,000 -451,000                                                                  
          repurchase of 504.4 million principal amount of 0.125 percent convertible senior notes
                                                                                             
          proceeds from equity
              2,596,000 23,609,000 40,762,000 3,730,000 2,390,000 2,560,000 343,000 2,568,000 1,614,000 1,848,000 1,000 1,922,000 1,882,000 7,760,000                                                                   
          repurchase of 434.1 million principal amount of 0.125 percent convertible senior notes
                                                                                              
          loss on early retirement of debt
                                                                                            
          purchases of strategic investments
                                                                                              
          proceeds from the issuance of 0 percent convertible senior notes
                                                                                              
          0 percent convertible senior notes issuance costs
                        -84,000 26,000                                                                     
          repurchase of 247.9 million principal amount of 1 percent convertible senior notes
                                                                                             
          repayment of remaining principal amount of 1 percent convertible senior notes at maturity
                                                                                              
          proceeds from issuance of warrants
                                                                                            
          purchase of note hedges
                                                                                            
          principal payments on debt
                                                                                              
          income taxes payable
                 6,338,000 7,446,000 11,037,000  2,000     549,000 2,000                                                                   
          right-of-use assets obtained in exchange for lease liabilities
                                 258,000 363,000 13,557,000                                                           
          amortization of premium on investments
                    -1,683,000 1,205,000 3,692,000 4,175,000  4,691,000          -2,433,000  -1,054,000 653,000 1,192,000 1,525,000 1,669,000 1,950,000 1,608,000 1,499,000 1,521,000 1,754,000 2,039,000 2,317,000 2,118,000 1,628,000 1,749,000 1,821,000 1,802,000 2,471,000 1,376,000                                       
          gain on sale of real estate assets
                                                                                              
          gain on investments
                       -10,000 -159,000 -60,000 -860,000 -13,000  -835,000                   125,000 -199,000   -581,000 -538,000 260,000 -397,000                                       
          deferred income taxes, including changes in valuation allowance
                                                                                              
          long-term income taxes receivable
                                                                                              
          royalty monetization issuance costs
                                                                                              
          repurchases and retirements of common stock
                            2,000 -90,550,000                                                               
          purchase of noncontrolling interest of akcea therapeutics, inc., including cash payments for cancellation of akcea therapeutics, inc. equity awards
                                                                                              
          amortization of patents
                     608,000 605,000 592,000 612,000 603,000 593,000 544,000 538,000 527,000 513,000 486,000 773,000 191,000 478,000 470,000 466,000 461,000 452,000 443,000 425,000 414,000 409,000 393,000 381,000 397,000 398,000 376,000 369,000 364,000 336,000 312,000 301,000 298,000 280,000 263,000                                       
          non-cash losses related to patents
                     204,000 841,000 110,000 1,557,000 323,000 606,000 221,000                                                                   
          purchase of bicycle therapeutics plc common stock
                                                                                              
          proceeds from the issuance of 0 percent convertible notes
                                                                                              
          repurchase of 247.9 million principal amount of the 1 percent convertible senior notes
                                                                                              
          income taxes receivable
                       865,000                                                                       
          net income
                            -341,426,000 -43,091,000 -43,769,000 -58,480,000 203,958,000 18,431,000 -10,011,000 90,884,000   -56,569,000 -10,812,000    3,468,000                                                   
          adjustments to reconcile net income to net cash from operating activities:
                                                                                              
          proceeds from the sale of short-term investments
                                   426,868,000 314,307,000 204,469,000 190,324,000 173,724,000 243,509,000 111,385,000 103,252,000 99,223,000 86,601,000 97,813,000 98,353,000 81,805,000 126,475,000 105,587,000 109,062,000 78,460,000 71,831,000 47,119,000 80,489,000 95,288,000 37,632,000 38,204,000 47,850,000 49,076,000 53,262,000 46,716,000 80,900,000 61,781,000 117,046,000 73,695,000 127,849,000 170,328,000 94,057,000 181,203,000 143,652,000 158,621,000 138,181,000 182,281,000 159,451,000 98,973,000 153,724,000 19,499,000 30,093,000 62,635,000 27,778,000 44,617,000 24,481,000 12,575,000 20,050,000 16,950,000 23,000,000 13,435,000 8,590,000 19,203,000 8,985,000 33,921,000 44,566,000 64,181,000 
          proceeds from the issuance of 0.125 percent convertible senior notes
                                                                                              
          0.125 percent convertible senior notes issuance costs
                                                                                              
          principal payments on line of credit
                                                                                              
          provision for deferred income taxes
                             -962,000 924,000 -3,437,000  -10,333,000 887,000 13,549,000                                                           
          income taxes (payable) receivable
                                                                                              
          acquisition of patents
                                                                                              
          proceeds from issuance of 0 percent convertible senior notes
                                                                                             
          payments of transaction costs for akcea merger
                                                                                              
          amounts accrued for akcea merger transaction costs
                                                                                              
          amortization of convertible senior notes discount
                            9,245,000 9,105,000 8,973,000 8,834,000 10,591,000 9,086,000 8,935,000 8,726,000 8,582,000 8,417,000 8,281,000 8,083,000 7,957,000 7,800,000 7,657,000 7,506,000                                                   
          long-term income tax receivable
                                                                                              
          accrued liabilities and deferred rent
                                12,590,000 626,000 -10,473,000 13,756,000 -2,631,000 -6,174,000 -6,523,000 -1,695,000 33,815,000 -4,102,000 5,124,000 -6,273,000                                                   
          purchase of strategic investments
                                                                                              
          proceeds from the issuance of common stock to biogen
                                                                                            
          non-cash losses related to patents, licensing and property, plant and equipment and investments
                             405,000 298,000 -87,000                                                               
          other current liabilities
                             15,163,000 597,000 -2,565,000                                                               
          proceeds from issuance of equity
                             12,997,000 8,801,000 7,652,000                            11,823,000 1,681,000 6,172,000 979,000 638,000 2,013,000 678,000                             
          payments of transaction costs for akcea acquisition
                                                                                              
          principal payments on debt obligations
                                                                                              
          net decrease in cash and cash equivalents
                                            410,000 -28,259,000 19,197,000 -35,460,000  7,106,000                                             
          amounts accrued for akcea acquisition transaction costs
                                                                                              
          payments of tax withholdings related to vesting of employee stock awards and exercise ofemployee stock options
                              -368,000 -11,603,000                                                               
          amortization of long-term financing liability for leased facility
                                        307,000 1,677,000 1,675,000 1,675,000 1,673,000 1,673,000 1,672,000 1,671,000 1,667,000 1,665,000 1,662,000 1,660,000 1,656,000 1,654,000 1,652,000                                       
          gain on investment in regulus therapeutics, inc.
                                         -374,000                                                   
          loss on extinguishment of financing liability for leased facility
                                                                                             
          deferred income taxes
                                                                                              
          non-cash losses related to patents, licensing, property, plant and equipment and investments
                                                                                              
          proceeds from the sale of regulus therapeutics, inc.
                                                                                              
          principal payments on debt and capital lease obligations
                                        -22,000 -299,000 -1,638,000 -1,640,000 -1,638,000 -1,711,000 -1,860,000 -1,857,000 -1,795,000 -2,073,000 -2,600,000 -2,590,000 -2,584,000 -2,611,000 -2,701,000 -2,691,000                                       
          proceeds from issuance of common stock in akcea therapeutics, inc. from its initial public offering, net of underwriters’ discount
                                                                                              
          proceeds from building mortgage debt, net of issuance costs
                                                                                             
          proceeds from the issuance of common stock to novartis
                                                                                             
          proceeds from the sale of akcea therapeutics, inc. common stock to novartis in a private placement
                                                                                              
          offering costs paid
                                        -980,000 -26,000 -253,000 -778,000                                                   
          payment to settle financing liability for leased facility
                                                                                             
          non-cash losses related to patents, licensing and property, plant and equipment
                                 13,000 189,000 14,000  67,000 240,000 175,000  -532,000 36,000 93,000 1,163,000 670,000 68,000 396,000 1,637,000 78,000 73,000 93,000 552,000 428,000 217,000 108,000                                       
          proceeds from short-term investments
                                 587,634,000                                                             
          proceeds from equity awards
                                 10,133,000 34,947,000 67,057,000  8,076,000 4,503,000 5,675,000  7,745,000 3,603,000 6,324,000  3,134,000 1,384,000 2,736,000 4,613,000 2,240,000 3,919,000 14,116,000 5,362,000 4,293,000 1,413,000 12,003,000 6,060,000 20,019,000                                     
          purchases of property, plant and equipment included in long-term obligations
                                                                                              
          payments of tax withholdings related to vesting of employee stock awards
                                  -437,000 -7,597,000                                                           
          gain on investment in regulus therapeutics inc.
                                                                                             
          non-cash losses related to patents, licensing, property, plant and equipment and strategic investments
                                                                                              
          proceeds from borrowing on line of credit facility
                                                                                             
          excess tax benefits from stock-based compensation awards
                                                                                              
          proceeds from the sale of regulus therapeutics stock
                                                                                             
          proceeds from the issuance of common stock from akcea therapeutics, inc.’s initial public offering, net of underwriters’ discount
                                                                                              
          unpaid deferred offering costs
                                         165,000 154,000 319,000                                                   
          stock issuance costs paid
                                       -451,000                                                       
          amortization of licenses
                                             1,000 468,000 468,000 468,000 469,000 470,000 471,000 470,000 471,000                                       
          proceeds from the sale of strategic investments
                                                13,000    427,000 1,299,000 283,000 454,000                       2,936,000 2,245,000            
          proceeds from issuance of common stock in akcea therapeutics, inc. from its initial public offering, net of underwriters' discount
                                                                                              
          purchase of strategic investment in seventh sense biosystems
                                                                                              
          proceeds from the issuance of common stock in akcea therapeutics, inc. from its initial public offering, net of underwriters’ discount
                                                                                              
          proceeds from sale of akcea therapeutics, inc. common stock to novartis in a private placement
                                                                                              
          proceeds from sale of stock to novartis
                                          71,640,000                                                   
          proceeds from the sale of regulus therapeutics
                                           2,507,000                                                   
          amortization of 2¾ convertible senior notes discount
                                                                                              
          amortization of 1 percent convertible senior notes discount
                                            5,490,000 5,381,000 5,280,000 5,175,000 5,077,000 4,979,000 4,884,000 4,788,000                                           
          share-based compensation expense
                                                                                              
          tax benefit from other unrealized gains on securities
                                                   -798,000   881,000 -2,276,000                                       
          deferred rent
                                              53,000 48,000 42,000 -4,000 105,000 62,000 27,000 57,000 44,000 25,000                                       
          accrued liabilities
                                              -7,199,000 -1,934,000 3,764,000 589,000 6,000 -6,704,000 1,312,000 5,081,000 -678,000 2,643,000                                       
          proceeds from issuance of 1 percent convertible senior notes, net of issuance costs
                                                                                              
          repurchase of 140 million of the principal amount of the 2¾ percent convertible senior notes
                                                                                              
          excess tax benefits from share-based compensation awards
                                                                                              
          amortization of 2¾ percent convertible senior notes discount
                                             648,000 634,000 620,000  595,000 581,000 565,000    1,671,000                                       
          proceeds from the sale of equity investments
                                                                                              
          repurchase of 140 million principal amount of the 2¾ percent convertible senior notes
                                                                                              
          proceeds from public common stock offering
                                                                                              
          proceeds from equipment financing arrangement
                                                              1,611,000   3,689,000 2,705,000                   
          proceeds from the sale of regulus
                                                                                              
          amortization of 2⅝ percent convertible subordinated notes discount
                                                                                              
          equity in net loss of regulus therapeutics inc.
                                                                                              
          investment in regulus therapeutics inc.
                                                                                              
          proceeds from issuance of 2¾ percent convertible senior notes, net of issuance costs
                                                                                              
          principal and premium payment on redemption of the 2⅝ percent convertible subordinated notes
                                                                                              
          amortization of 23¤4 percent convertible senior notes discount
                                                     1,737,000                                         
          net proceeds from public common stock offering
                                                         69,000                                     
          amortization of 25¤8 percent convertible subordinated notes discount
                                                                                              
          proceeds from issuance of 23¤4 percent convertible senior notes, net of issuance costs
                                                                                              
          principal and premium payment on redemption of the 25¤8 percent convertible subordinated notes
                                                                                              
          proceeds from sale of strategic investments
                                                         172,000 844,000 1,094,000                                   
          principal and premium payment on redemption of the 25/8 percent convertible subordinated notes
                                                                                              
          amortization of 25/8 percent convertible subordinated notes discount
                                                                                              
          amortization of 23¤4 percent convertible subordinated notes discount
                                                                                              
          gain from the sale of property, plant and equipment
                                                                                              
          proceeds from the sale of property, plant and equipment
                                                                                       5,814,000 7,041,000 1,000,000 165,000    
          proceeds from land sold to biomed
                                                                    10,147,000                       
          reduction of cash due to deconsolidation of regulus therapeutics inc. upon adoption of a new accounting standard
                                                                                              
          capitalized costs and financing liability associated with leased facility
                                                                982,000 10,173,000                             
          gain from sale of ibis biosciences, inc. to abbott molecular inc.
                                                                                              
          excess tax benefits on share-based compensation
                                                                                              
          purchases of strategic investments, net of proceeds received
                                                                                              
          proceeds from sale of ibis biosciences, inc to abbott molecular inc.
                                                                                              
          proceeds from alnylam’s capital contribution to regulus therapeutics inc.
                                                                        10,000,000                   
          income taxes paid, net of refund received
                                                                                              
          capital lease obligations
                                                                                              
          net cash provided by investing activities
                                                                                      13,338,000   19,496,000 4,394,000    
          net cash (used in) provided by financing activities
                                                                                              
          net cash (used in) provided by investing activities
                                                                                              
          net (decrease) increase in cash and cash equivalents
                                                                                              
          net proceeds from issuance of equity
                                                                   683,000 2,320,000 754,000 251,000 1,031,000 3,361,000 2,168,000 1,484,000 6,143,000 2,171,000 5,819,000 1,997,000 2,727,000 4,650,000 684,000 1,188,000 77,343,000 5,620,000 670,000 2,731,000 -1,000 48,797,000 19,000 353,000 743,000 401,000 2,172,000 
          supplemental disclosures of non-cash investing activities:
                                                                                              
          loss attributed to noncontrolling interest in ibis biosciences, inc.
                                                                                              
          gain from derivative instruments issued to abbott molecular inc.
                                                                                              
          proceeds from issuance of convertible promissory note to glaxosmithkline
                                                                                              
          proceeds from stock purchase by genzyme corporation, net of fees
                                                                            49,962,000               
          cash and cash equivalents (including cash and cash equivalents classified as assets from discontinued operations of 0, 0 and 6.1 million at december 31, 2010, 2009 and 2008, respectively) at end of year
                                                                                              
          proceeds from sale of ibis biosciences, inc. to abbott molecular inc.
                                                                         175,000,000                   
          non-cash losses related to patents and property, plant and equipment
                                                                                              
          acquisition of symphony genisis, inc.
                                                                                              
          proceeds from issuance of 25/8 percent convertible subordinated notes, net of issuance costs
                                                                                              
          principal and redemption premium payment on prepayment of the 51/2 percent convertible subordinated notes
                                                                                              
          cash and cash equivalents (including cash and cash equivalents classified as assets from discontinued operations of 0, 6.1 million and 0 at december 31, 2009, 2008 and 2007, respectively) at end of year
                                                                                              
          common stock issued for symphony genisis, inc. acquisition
                                                                                              
          proceeds from issuance of convertible promissory note to gsk
                                                                                             
          loss attributed to noncontrolling interest in symphony genisis, inc.
                                                                                              
          loss attributed to noncontrolling interest in regulus therapeutics inc.
                                                                                              
          inventory
                                                                                              
          deferred contract revenues
                                                                                              
          purchase of short-term investments
                                                                                              
          proceeds from issuance of 25/8% convertible subordinated notes, net of issuance costs
                                                                                              
          principal and redemption premium payment on prepayment of the 51/2% convertible subordinated notes
                                                                                              
          proceeds from capital contributions to ibis biosciences, inc.
                                                                                            
          proceeds from capital contribution to regulus therapeutics inc.
                                                                                              
          proceeds from contribution to noncontrolling interest in symphony genisis, inc., net of fees
                                                                                              
          cash and cash equivalents (including cash and cash equivalents classified as assets held for sale of 6.1 million, 0 and 0 at december 31, 2008, 2007 and 2006, respectively) at end of year
                                                                                              
          warrant issued in conjunction with symphony genisis, inc. transaction
                                                                                            
          acquisition of property, plant and equipment
                                                                                              
          proceeds from capital contribution to regulus therapeutics llc
                                                                                              
          net cash provided by (used in) investing activities
                                                                                              
          net cash provided by financing activities
                                                                              25,166,000 70,951,000   111,364,000    786,000    2,394,000    
          proceeds from issuance of 25¤8% convertible subordinated notes, net of issuance costs
                                                                                  157,067,000            
          proceeds from capital contribution to ibis biosciences, inc.
                                                                               20,000,000               
          proceeds from issuance of 2 5/8% convertible subordinated notes, net of issuance costs
                                                                                              
          principal and redemption premium payment on prepayment of the 5 1/2% convertible subordinated notes
                                                                                              
          proceeds from purchase of noncontrolling interest in symphony genisis, inc, net of fees
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 54.8 million and 0 at december 31, 2006 and 2005, respectively) at beginning of period
                                                                                114,514,000            
          cash and cash equivalents (including cash and cash equivalents held on behalf of regulus therapuetics llc of 10.0 million at september 30, 2007 and 58.6 million held by symphony genisis, inc. at september 30, 2006) at end of period
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 43.0 million and 64.4 million at june 30, 2007 and 2006, respectively) at end of period
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 49.6 million and 0 at march 31, 2007 and 2006, respectively) at end of period
                                                                                  183,423,000            
          amortization of (discount)/premium on investments
                                                                                              
          compensation benefit related to variable accounting of stock options
                                                                                              
          deferred interest on long-term debt
                                                                                              
          non-cash restructuring activities
                                                                                              
          non-cash losses related to patents and fixed assets
                                                                                              
          income from variable accounting of stock warrants
                                                                                              
          gain on disposal of property, plant and equipment
                                                                                              
          strategic investments in corporate securities
                                                                                              
          net cash from (used in) investing activities
                                                                                              
          proceeds from long-term borrowing
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 54.8 million, 0 and 0 at december 31, 2006, 2005 and 2004, respectively) at end of year
                                                                                              
          conversion of receivables into long-term investment
                                                                                              
          conversion of debt into common stock
                                                                                             
          conversion of preferred stock into common stock
                                                                                           1,000   
          purchase of property, plant and equipment
                                                                                              
          other assets
                                                                                              
          strategic investments
                                                                                             
          proceeds from long-term borrowings
                                                                                        -397,000 5,000,000 4,169,000 4,999,000 7,574,000 
          proceeds from purchase of noncontrolling interest in symphony genisis, inc., net of fees
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 58.6 million and 0 at september 30, 2006 and december 31, 2005, respectively) at end of period
                                                                                              
          net increase (decrease) in cash and cash equivalents
                                                                                              
          cash and cash equivalents (including cash and cash equivalents held by symphony genisis, inc. of 64.4 million and 0 at june 30, 2006 and december 31, 2005, respectively) at end of period
                                                                                              
          net cash used in operating activities
                                                                                      -16,063,000   -19,360,000 -22,032,000    
          compensation (benefit) related to stock options
                                                                                              
          licenses and other assets
                                                                                              
          investments in affiliates
                                                                                              
          conversion of contract receivable into long-term investment
                                                                                              
          additions to long-term investments for acquired corporate securities
                                                                                              
          decrease in inventory and deferred revenue
                                                                                              
          decrease in property, plant and equipment and notes payable
                                                                                              
          common stock warrants
                                                                                              
          supplemental disclosures of non-cash financing activities: