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Lyell Immunopharma Inc
(NASDAQ:LYEL) 

LYEL stock logo

Lyell Immunopharma is an operator of a biotechnology company that develops cellular therapies to cure cancer. South San Francisco, California, United States.

Founded: 2018
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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 
                       
      revenue
    6,000 15,000 8,000 7,000 11,000 34,000 13,000 3,000 13,000 25,000 27,000 65,000 48,386,000 3,000 35,741,000 553,000 2,822,000 2,755,000 2,628,000 
      yoy
    -45.45% -55.88% -38.46% 133.33% -15.38% 36.00% -51.85% -95.38% -99.97% 733.33% -99.92% -88.25% 1614.60% -99.89% 1260.01%     
      qoq
    -60.00% 87.50% 14.29% -36.36% -67.65% 161.54% 333.33% -76.92% -48.00% -7.41% -58.46% -99.87% 1612766.67% -99.99% 6363.11% -80.40% 2.43% 4.83%  
      operating expenses:
                       
      research and development
    52,199,000 28,172,000 34,857,000 43,447,000 48,668,000 39,500,000 40,261,000 43,174,000 46,995,000 43,849,000 47,471,000 44,630,000 38,032,000 41,607,000 43,719,000 35,830,000 19,285,000 31,433,000 46,446,000 
      general and administrative
    10,616,000 10,687,000 9,786,000 14,046,000 14,522,000 11,769,000 12,256,000 13,494,000 13,167,000 15,507,000 19,030,000 19,279,000 26,348,000 26,084,000 30,454,000 34,421,000 31,873,000 21,241,000 19,112,000 
      other operating income
    -1,497,000 -1,591,000  -119,000 -513,000 -730,000 -976,000 -1,090,000 -641,000 -292,000 -569,000 -1,288,000 -1,210,000 -1,251,000 -1,171,000 -1,122,000 -798,000 -758,000 -223,000 
      impairment of long-lived assets
      1,443,000                 
      total operating expenses
    127,650,000 37,268,000 47,148,000 57,374,000 201,158,000 50,539,000 51,541,000 55,578,000 59,521,000 59,064,000 65,932,000 62,621,000 63,170,000 66,440,000 73,002,000 69,129,000 50,360,000 51,916,000 65,335,000 
      income from operations
    -127,644,000 -37,253,000 -47,140,000 -57,367,000 -201,147,000 -50,505,000 -51,528,000 -55,575,000 -59,508,000 -59,039,000 -65,905,000 -62,556,000 -14,784,000 -66,437,000 -37,261,000 -68,576,000 -47,538,000 -49,161,000 -62,707,000 
      yoy
    -36.54% -26.24% -8.52% 3.22% 238.02% -14.45% -21.81% -11.16% 302.52% -11.14% 76.87% -8.78% -68.90% 35.14% -40.58%     
      qoq
    242.64% -20.97% -17.83% -71.48% 298.27% -1.99% -7.28% -6.61% 0.79% -10.42% 5.35% 323.13% -77.75% 78.30% -45.66% 44.26% -3.30% -21.60%  
      operating margin %
    -2127400.00% -248353.33% -589250.00% -819528.57% -1828609.09% -148544.12% -396369.23% -1852500.00% -457753.85% -236156.00% -244092.59% -96240.00% -30.55% -2214566.67% -104.25% -12400.72% -1684.55% -1784.43% -2386.11% 
      interest income
    2,676,000 3,266,000 3,276,000 3,862,000 4,920,000 5,965,000 6,364,000 6,819,000 7,084,000 6,608,000 5,264,000 4,497,000 3,453,000 2,251,000 952,000 397,000 323,000 270,000 218,000 
      other income
    -15,755,000 -4,859,000 1,180,000 1,310,000 4,292,000 -43,000 -645,000 1,090,000 -506,000 1,578,000 -326,000 1,100,000 2,934,000 -1,068,000 -14,000 35,000 -44,000 16,000 -106,000 
      impairment of other investments
           -13,001,000   -2,923,000 -10,000,000  -5,000,000      
      total other income
    -13,079,000 -1,593,000 4,456,000 5,172,000 9,212,000 5,922,000 5,719,000  6,578,000 8,186,000 2,015,000 -4,403,000 6,387,000 -3,817,000 938,000 432,000    
      net income
    -140,723,000 -38,846,000 -42,684,000 -52,195,000 -191,935,000 -44,583,000 -45,809,000 -60,667,000 -52,930,000 -50,853,000 -63,890,000 -66,959,000 -8,397,000 -70,254,000 -36,323,000 -68,144,000 -83,706,000 -48,875,000 -62,595,000 
      yoy
    -26.68% -12.87% -6.82% -13.96% 262.62% -12.33% -28.30% -9.40% 530.34% -27.62% 75.89% -1.74% -89.97% 43.74% -41.97%     
      qoq
    262.26% -8.99% -18.22% -72.81% 330.51% -2.68% -24.49% 14.62% 4.08% -20.41% -4.58% 697.42% -88.05% 93.41% -46.70% -18.59% 71.27% -21.92%  
      net income margin %
    -2345383.33% -258973.33% -533550.00% -745642.86% -1744863.64% -131126.47% -352376.92% -2022233.33% -407153.85% -203412.00% -236629.63% -103013.85% -17.35% -2341800.00% -101.63% -12322.60% -2966.19% -1774.05% -2381.85% 
      other comprehensive loss:
                       
      net unrealized gain on marketable securities
    41,000 144,000 -101,000  -469,000 1,157,000 7,000 -310,000 1,087,000 1,198,000 1,500,000 3,720,000     -1,558,000 -138,000 -90,000 
      comprehensive loss
    -140,682,000 -38,702,000 -42,785,000 -52,328,000 -192,404,000 -43,426,000 -45,802,000 -60,977,000 -51,843,000 -49,655,000 -62,390,000 -63,239,000 -6,000,000 -71,899,000 -38,074,000 -73,121,000    
      net loss per common share, basic and diluted1
    -7,680 -2,130 -2,890                 
      weighted-average shares used for eps calculation
    17,093,000 18,268,000 14,793,000 295,098,000 261,480,000 256,309,000 255,398,000 254,252,000 250,983,000 251,318,000 250,204,000 249,591,000 247,080,000 248,320,000 246,312,000 244,178,000 135,918,000 239,384,000 42,713,000 
      other operating loss
      1,062,000                 
      net unrealized loss on marketable securities
       -133,000         2,397,000 -1,645,000 -1,751,000 -4,977,000    
      net loss per common share, basic and diluted
       -180 -720 -170 -180 -240 -200 -200 -260 -270 -30 -280 -150 -280 -180 -200 -1,470 
      total other loss
           -5,092,000            
      comprehensive loss:
                       
      operating expenses
                       
      other comprehensive gain:
                       
      net comprehensive loss
                    -41,708,500 -49,013,000 -62,685,000 
      net loss attributed to common stockholders:
                       
      deemed dividends upon repurchase of convertible preferred stock
                       
      net loss attributed to common stockholders
                    -83,706,000 -48,875,000 -62,595,000 
    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 
                         
        assets
                         
        current assets:
                         
        cash and cash equivalents
      60,181,000 123,575,000 98,804,000 120,328,000 105,597,000 100,299,000 133,424,000 125,650,000 145,647,000 286,214,000 224,372,000 109,426,000 123,554,000 116,311,000 205,739,000 222,596,000 293,828,000 393,504,000 564,441,000 
        marketable securities
      187,039,000 196,049,000 177,986,000 180,849,000 264,930,000 340,248,000 357,695,000 400,650,000 400,576,000 289,217,000 371,376,000 503,343,000 516,598,000 531,821,000 449,825,000 391,316,000 320,966,000   
        prepaid expenses and other current assets
      13,719,000 8,577,000 5,424,000 8,001,000 9,067,000 9,498,000 8,705,000 7,865,000 8,463,000 11,423,000 10,662,000 11,629,000 11,143,000 11,613,000 11,214,000 11,793,000 11,492,000 12,226,000 10,317,000 
        total current assets
      260,939,000 328,201,000 282,214,000 309,178,000 379,594,000 450,045,000 499,824,000 534,165,000 554,686,000 586,854,000 606,410,000 624,398,000 651,295,000 659,745,000 666,778,000 625,705,000 626,286,000 631,147,000 834,840,000 
        restricted cash
      1,585,000 1,585,000 1,584,000 1,688,000 1,690,000 288,000 287,000 286,000 284,000 283,000 282,000 281,000 280,000 279,000 279,000 279,000 466,000 466,000 466,000 
        marketable securities, non-current
        20,059,000 28,949,000 13,014,000 20,112,000   16,506,000 22,729,000 36,952,000 55,255,000 70,117,000 102,519,000 131,438,000 224,118,000 283,531,000   
        other investments
      19,000,000 19,000,000 19,000,000 19,000,000 19,000,000 19,000,000 19,000,000 19,000,000 32,001,000 32,001,000 32,001,000 34,924,000 44,924,000 42,001,000 47,001,000 47,001,000 47,001,000 83,448,000 83,448,000 
        property and equipment
      34,771,000 36,722,000 39,115,000 44,195,000 48,200,000 88,047,000 93,096,000 97,836,000 102,654,000 108,096,000 113,677,000 118,600,000 123,023,000 125,727,000 127,559,000 125,707,000 120,098,000 115,857,000 109,637,000 
        operating lease right-of-use assets
      18,871,000 19,912,000 20,951,000 23,570,000 24,739,000 36,662,000 37,696,000 38,695,000 39,663,000 40,603,000 41,512,000 42,390,000 43,242,000 44,084,000 44,907,000 45,725,000 46,541,000   
        other non-current assets
      4,886,000 2,545,000 2,530,000 3,218,000 4,622,000 5,061,000 4,239,000 4,238,000 4,235,000 4,423,000 4,520,000 4,602,000 4,680,000 2,914,000 3,712,000 3,568,000 3,483,000 2,669,000 2,791,000 
        total assets
      340,052,000 407,965,000 385,453,000 429,798,000 490,859,000 619,215,000 654,142,000 694,220,000 750,029,000 794,989,000 835,354,000 880,450,000 937,561,000 977,269,000 1,021,674,000 1,072,103,000 1,127,406,000 1,198,334,000 1,229,867,000 
        liabilities and stockholders’ equity
                         
        current liabilities:
                         
        accounts payable
      2,893,000 2,568,000 3,379,000 3,728,000 5,366,000 3,596,000 4,199,000 4,895,000 4,817,000 4,365,000 5,805,000 5,733,000 3,917,000 4,795,000 4,247,000 6,510,000 3,207,000 3,526,000 4,863,000 
        accrued liabilities and other current liabilities
      46,519,000 29,310,000 27,999,000 31,168,000 40,411,000 29,009,000 25,670,000 24,914,000 28,126,000 29,652,000 24,832,000 22,416,000 28,755,000 23,568,000 21,396,000 22,686,000 29,057,000 25,058,000 25,568,000 
        contingent consideration payable
        5,525,000 6,389,000 7,600,000               
        total current liabilities
      49,412,000 31,878,000 36,903,000 41,285,000 53,788,000 33,512,000 30,879,000 32,353,000 34,519,000 35,064,000 34,390,000 30,797,000 37,028,000 51,217,000 50,291,000 41,055,000 46,738,000 59,281,000 63,663,000 
        operating lease liabilities, non-current
      41,921,000 44,285,000 46,597,000 48,851,000 50,994,000 51,441,000 53,323,000 55,159,000 56,894,000 58,576,000 60,221,000 61,826,000 63,168,000 64,636,000 66,074,000 67,475,000 66,650,000 65,684,000  
        other non-current liabilities
      517,000 2,681,000 3,030,000 3,141,000 3,253,000 3,565,000 3,439,000 3,551,000 3,664,000 3,776,000 3,888,000 4,001,000 4,113,000 4,227,000 4,340,000 4,453,000 4,566,000 5,012,000 900,000 
        total liabilities
      91,850,000 78,844,000 86,530,000 93,277,000 108,035,000 88,518,000 87,641,000 91,063,000 95,077,000 97,416,000 98,499,000 96,624,000 104,309,000 157,243,000 153,632,000 190,854,000 197,619,000 211,860,000 207,912,000 
        commitments and contingencies
                         
        stockholders’ equity:
                         
        preferred stock, 0.0001 par value...
                         
        common stock, 0.0001 par value...
      2,000 2,000 1,000 30,000 29,000 26,000 26,000 25,000 25,000 25,000 25,000 25,000 25,000 25,000 25,000 25,000 24,000 24,000 24,000 
        additional paid-in capital1
      1,867,512,000 1,807,749,000 1,738,850,000                 
        accumulated other comprehensive income
      242,000 201,000 57,000 158,000 291,000 760,000           -1,623,000 -65,000 73,000 
        accumulated deficit
      -1,619,554,000 -1,478,831,000 -1,439,985,000 -1,397,301,000 -1,345,106,000 -1,153,171,000 -1,108,588,000 -1,062,779,000 -1,002,112,000 -949,182,000 -898,329,000 -834,439,000 -767,480,000 -759,083,000 -688,829,000 -652,506,000 -584,362,000 -500,656,000 -451,781,000 
        total stockholders’ equity
      248,202,000 329,121,000 298,923,000 336,521,000 382,824,000 530,697,000 566,501,000 603,157,000 654,952,000 697,573,000 736,855,000 783,826,000 833,252,000 820,026,000 868,042,000 881,249,000 929,787,000   
        total liabilities and stockholders’ equity
      340,052,000 407,965,000 385,453,000 429,798,000 490,859,000 619,215,000 654,142,000 694,220,000 750,029,000 794,989,000 835,354,000 880,450,000 937,561,000 977,269,000 1,021,674,000 1,072,103,000    
        revenue
       15,000 8,000 7,000  34,000 13,000 3,000  25,000 27,000 65,000  3,000 35,741,000 553,000    
        operating expenses:
                         
        research and development
       28,172,000 34,857,000 43,447,000  39,500,000 40,261,000 43,174,000  43,849,000 47,471,000 44,630,000  41,607,000 43,719,000 35,830,000    
        general and administrative
       10,687,000 9,786,000 14,046,000  11,769,000 12,256,000 13,494,000  15,507,000 19,030,000 19,279,000  26,084,000 30,454,000 34,421,000    
        other operating income
       -1,591,000  -119,000  -730,000 -976,000 -1,090,000  -292,000 -569,000 -1,288,000  -1,251,000 -1,171,000 -1,122,000    
        impairment of long-lived assets
        1,443,000                 
        total operating expenses
       37,268,000 47,148,000 57,374,000  50,539,000 51,541,000 55,578,000  59,064,000 65,932,000 62,621,000  66,440,000 73,002,000 69,129,000    
        income from operations
       -37,253,000 -47,140,000 -57,367,000  -50,505,000 -51,528,000 -55,575,000  -59,039,000 -65,905,000 -62,556,000  -66,437,000 -37,261,000 -68,576,000    
        interest income
       3,266,000 3,276,000 3,862,000  5,965,000 6,364,000 6,819,000  6,608,000 5,264,000 4,497,000  2,251,000 952,000 397,000    
        other income
       -4,859,000 1,180,000 1,310,000  -43,000 -645,000 1,090,000  1,578,000 -326,000 1,100,000  -1,068,000 -14,000 35,000    
        impairment of other investments
             -13,001,000   -2,923,000 -10,000,000  -5,000,000      
        total other income
       -1,593,000 4,456,000 5,172,000  5,922,000 5,719,000   8,186,000 2,015,000 -4,403,000  -3,817,000 938,000 432,000    
        net income
       -38,846,000 -42,684,000 -52,195,000  -44,583,000 -45,809,000 -60,667,000  -50,853,000 -63,890,000 -66,959,000  -70,254,000 -36,323,000 -68,144,000    
        other comprehensive loss:
                         
        net unrealized gain on marketable securities
       144,000 -101,000   1,157,000 7,000 -310,000  1,198,000 1,500,000 3,720,000        
        comprehensive loss
       -38,702,000 -42,785,000 -52,328,000  -43,426,000 -45,802,000 -60,977,000  -49,655,000 -62,390,000 -63,239,000  -71,899,000 -38,074,000 -73,121,000    
        net income per common share, basic and diluted1
       -2,130 -2,890                 
        weighted-average shares used for eps calculation
       18,268,000 14,793,000 295,098,000  256,309,000 255,398,000 254,252,000  251,318,000 250,204,000 249,591,000  248,320,000 246,312,000 244,178,000    
        other operating income (income)
        1,062,000                 
        additional paid-in capital
         1,733,634,000 1,727,610,000 1,683,082,000 1,675,460,000 1,666,315,000 1,657,133,000 1,647,911,000 1,637,538,000 1,622,119,000 1,608,306,000 1,589,080,000 1,565,197,000 1,540,330,000 1,515,748,000 1,487,171,000 1,473,639,000 
        net unrealized loss on marketable securities
         -133,000          -1,645,000 -1,751,000 -4,977,000    
        net income per common share, basic and diluted
         -180  -170 -180 -240  -200 -260 -270  -280 -150 -280    
        success payment liabilities
          411,000 907,000 1,010,000 2,544,000 1,576,000 1,047,000 3,753,000 2,648,000 4,356,000 11,663,000 9,222,000 5,635,000 9,486,000 25,116,000 25,006,000 
        accumulated other comprehensive loss
            -397,000 -404,000 -94,000 -1,181,000 -2,379,000 -3,879,000 -7,599,000 -9,996,000 -8,351,000 -6,600,000    
        total other loss
             -5,092,000            
        comprehensive loss:
                         
        deferred revenue
                   11,191,000 15,426,000 6,224,000 4,988,000 5,581,000 8,226,000 
        deferred revenue, non-current
                   37,163,000 32,927,000 77,871,000 79,665,000 81,883,000  
        liabilities, convertible preferred stock and stockholders’ equity
                         
        convertible preferred stock, 0.0001 par value...
                         
        stockholders’ equity
                         
        total liabilities, convertible preferred stock and stockholders’ equity
                      1,127,406,000   
        short-term marketable securities
                       225,417,000 260,082,000 
        long-term marketable securities
                       317,511,000 150,261,000 
        right-of-use assets
                       47,236,000 48,424,000 
        liabilities, convertible preferred stock and stockholders' equity
                         
        stockholders' equity
                         
        total stockholders' equity
                       986,474,000 1,021,955,000 
        total liabilities, convertible preferred stock and stockholders' equity
                       1,198,334,000 1,229,867,000 
        operating lease liabilities, net of current portion
                        61,471,000 
        deferred revenue, net of current portion
                        81,878,000 
      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 
                          
          cash flows from operating activities
                          
          net loss
        -140,723,000 -38,846,000 -42,684,000 -52,195,000 -191,935,000 -44,583,000 -45,809,000 -60,667,000 -52,930,000 -50,853,000 -63,890,000 -66,959,000 -8,397,000 -70,254,000 -36,323,000 -68,144,000 -83,706,000 -48,875,000 
          adjustments to reconcile net loss to net cash from operating activities:
                          
          acquired ipr&d expense
                          
          stock-based compensation expense
        25,569,000 5,232,000 5,004,000 6,024,000 8,083,000 7,622,000 8,284,000 9,155,000 8,463,000 10,516,000 14,223,000 13,882,000 18,363,000 19,123,000 22,410,000 22,028,000 21,178,000 13,042,000 
          loss on securities purchase agreement put/call
        15,156,000                  
          depreciation and amortization expense
        2,397,000 2,566,000 3,135,000 3,441,000 5,026,000 4,680,000 4,901,000 5,024,000 5,057,000 5,104,000 5,062,000 5,027,000 5,041,000 4,621,000     
          net amortization and accretion on marketable securities
        -1,060,000 -1,009,000 -1,165,000 -1,725,000 -2,965,000 -3,587,000 -3,762,000 -4,367,000 -3,384,000 -2,287,000 -2,075,000 -1,850,000 -1,208,000 -428,000     
          non-cash lease income
        -1,039,000 -995,000 -806,000 -710,000 -607,000 -612,000 -606,000 -373,000  -528,000 -523,000 -293,000       
          loss on property and equipment disposals
        -166,000 -249,000 2,468,000 1,291,000 924,000 402,000 15,000 437,000 642,000   6,000 13,000   714,000  
          change in fair value of contingent consideration payable
        369,000 -864,000 -1,211,000               
          impairment of long-lived assets
                        
          change in fair value of success payment liabilities
        610,000 461,000 -115,000 -125,000 -496,000 -103,000 -1,534,000 968,000 529,000 -2,706,000 1,105,000 -1,708,000 -7,307,000 2,441,000 3,587,000 -3,851,000 -15,630,000 110,000 
          impairment of other investments
            13,001,000 2,923,000 10,000,000      
          loss on marketable equity security
        1,000 1,000 2,000 26,000               
          changes in operating assets and liabilities:
                          
          prepaid expenses, other current assets and other assets
        -2,393,000 420,000 2,796,000 2,000,000 3,636,000 -1,615,000 -841,000 595,000 3,148,000 -664,000 1,049,000 -408,000 -1,296,000 -681,000 406,000 -397,000   
          accounts payable
        325,000 -779,000 -231,000 -1,654,000 -2,036,000 -568,000 -517,000 -113,000 425,000 -1,410,000 380,000 2,069,000 -526,000 23,000 -1,767,000 2,937,000 99,000 -988,000 
          accrued liabilities and other current liabilities
        4,904,000 572,000 -3,330,000 -9,788,000 -1,254,000 3,094,000 516,000 -3,606,000 -1,739,000 4,612,000 2,268,000 -5,860,000 5,373,000 1,323,000 -766,000 -6,393,000 -6,250,000  
          other non-current liabilities
        -2,164,000 -349,000 -111,000 -112,000 -312,000 126,000 -112,000 -113,000 -112,000 -112,000 -113,000 -112,000 -114,000 -113,000 -113,000 -113,000 -446,000  
          net cash from operating activities
        -32,251,000 -28,577,000 -34,458,000 -54,738,000 -47,242,000 -35,042,000 -38,094,000 -42,016,000 -40,635,000 -37,686,000 -39,161,000 -46,212,000 -40,267,000 -37,103,000 -44,333,000 -47,852,000 -33,173,000 -25,532,000 
          capital expenditures
        -304,000 -62,000 -314,000 -91,000 77,000 -86,000 -501,000 190,000 2,000 -226,000 -1,295,000 -1,138,000 -6,820,000 -2,781,000 -3,724,000 -9,626,000 -11,095,000 -12,746,000 
          free cash flows
        -32,555,000 -28,639,000 -34,772,000 -54,829,000 -47,165,000 -35,128,000 -38,595,000 -41,826,000 -40,633,000 -37,912,000 -40,456,000 -47,350,000 -47,087,000 -39,884,000 -48,057,000 -57,478,000 -44,268,000 -38,278,000 
          cash flows from investing activities
                          
          purchases of property and equipment
        -304,000 -62,000 -168,000 -246,000 -44,000 -59,000 -331,000 -30,000 -25,000 -195,000 -933,000 -1,533,000 -4,582,000 -2,791,000 -7,170,000 -9,733,000 -10,268,000 -11,599,000 
          sales of property and equipment
        24,000                 
          purchases of marketable securities
        -42,800,000 -70,987,000 -80,701,000 -84,411,000 -38,802,000 -131,430,000 -116,464,000 -108,011,000 -256,785,000 -78,280,000 -33,255,000 -108,560,000 -59,669,000 -160,792,000 -89,659,000 -96,196,000 -133,924,000 -275,311,000 
          maturities of marketable securities
        52,910,000 74,135,000 93,516,000 154,123,000 123,697,000 133,407,000 161,802,000 130,035,000           
          acquisition of assets, net of cash acquired
                          
          net cash from investing activities
        -31,365,000 3,349,000 12,647,000 69,466,000 53,505,000 1,918,000 45,007,000 21,994,000 -100,690,000 99,672,000 152,912,000 32,154,000 46,648,000 -57,085,000 25,019,000 -26,122,000 -73,902,000 -144,874,000 
          cash flows from financing activities
                          
          proceeds from securities purchase agreement equity issuance
                         
          proceeds from exercise of stock options
            -1,000 52,000 103,000 151,000 72,000   325,000 5,127,000 1,570,000 2,555,000 7,399,000 529,000 
          proceeds from employee stock purchase plan
        181,000   438,000   731,000   632,000     
          taxes paid related to net share settlement of equity awards
           1,000 -76,000 -123,000 -215,000 -50,000 -69,000 -94,000      
          net cash from financing activities
        222,000 50,000,000 183,000 1,000 437,000 862,000 27,000 759,000 -143,000 1,196,000 -69,000 863,000 4,760,000 2,457,000 2,555,000 7,399,000 -531,000 
          net increase in cash, cash equivalents and restricted cash
        -63,394,000   14,729,000 6,700,000 -33,124,000   -140,566,000 61,843,000   7,244,000 -89,428,000 -16,857,000 -71,419,000 -99,676,000 -170,937,000 
          cash, cash equivalents and restricted cash at beginning of period
        107,287,000 145,931,000 123,834,000 294,294,000 
          cash, cash equivalents and restricted cash at end of period
        -63,394,000 24,772,000 -21,628,000 122,016,000 6,700,000 -33,124,000 7,775,000 125,936,000 -140,566,000 61,843,000 114,947,000 109,707,000 7,244,000 -89,428,000 -16,857,000 222,875,000 -99,676,000 -170,937,000 
          represented by:
                          
          cash and cash equivalents
        -63,394,000 24,771,000 -21,524,000 120,328,000 5,298,000 -33,125,000 7,774,000 125,650,000 -140,567,000 61,842,000 114,946,000 109,426,000 7,243,000 -89,428,000 -16,857,000 222,596,000 -99,676,000 -170,937,000 
          restricted cash
        1,000 -104,000 1,688,000 1,402,000 1,000 1,000 286,000 1,000 1,000 1,000 281,000 1,000 279,000 
          total
        -63,394,000 24,772,000 -21,628,000 122,016,000 6,700,000 -33,124,000 7,775,000 125,936,000 -140,566,000 61,843,000 114,947,000 109,707,000 7,244,000 -89,428,000 -16,857,000 222,875,000 -99,676,000 -170,937,000 
          supplemental cash flow information
                          
          cash paid for amounts included in the measurement of lease liabilities
        3,168,000 3,167,000 3,157,000 3,095,000 3,018,000 2,898,000 2,892,000 2,659,000 2,815,000 2,815,000 2,809,000 2,406,000 2,734,000 2,737,000 2,727,000 2,672,000 2,888,000 2,759,000 
          non-cash investing and financing activities:
                          
          equity issued for acquisition
                          
          securities purchase agreement put/call issuance
                         
          equity issued for contingent consideration - immpact bio usa inc. acquisition
                          
          contingent consideration payable related to the purchase of the ipr&d asset on closing date
                          
          purchases of property and equipment included in accounts payable and accrued liabilities
          -146,000 155,000 121,000 -27,000 -170,000 220,000 27,000 -31,000 -362,000 395,000 -2,238,000 10,000 3,446,000 107,000 -827,000 -1,147,000 
          equity issued for contingent consideration — immpact bio usa inc. acquisition
                          
          net decrease in cash, cash equivalents and restricted cash
               -19,995,000    -14,127,000       
          gain on marketable equity security
            17,000 102,000             
          change in fair value of equity warrant
                         
          gain on other investments
                          
          deferred revenue
                    -48,354,000 1,000 -35,742,000 -558,000 -2,811,000 -2,640,000 
          operating lease liabilities, non-current
                    1,524,000 1,196,000 2,135,000   
          cash received for amounts related to tenant improvement allowances
                    1,523,000 1,196,000 2,042,000 2,232,000 5,663,000 
          issuance of common stock related to the purchase of the ipr&d asset on closing date
                          
          acquisition of pact series d convertible preferred shares
                          
          remeasurement of operating lease right-of-use asset for lease modification
                    2,000 18,000 6,000 5,000   
          gain on marketable equity securities
               -1,535,000           
          non-cash lease expense
                     -449,000 -441,000 -214,000  -405,000 
          gain on net operating lease liability disposal
                          
          sales and maturities of marketable securities
                156,120,000 178,147,000 187,100,000 142,247,000 110,899,000 106,498,000 121,848,000 79,807,000 70,330,000 142,036,000 
          proceeds from initial public offering, net of issuance costs
                        -1,060,000 
          conversion of convertible preferred stock to common stock upon closing of initial public offering
                        
          lease expense, net of gain on lease remeasurement
                          
          expense in connection with asset acquisition
                          
          purchases of other investments
                          
          proceeds from issuance of convertible preferred stock, net of issuance costs
                          
          payments for the repurchase of common stock
                          
          payments for the repurchase of convertible preferred stock
                          
          operating lease right-of-use assets obtained in exchange for lease obligations
                          
          other investments received for sale of assets
                          
          change in fair value of warrants
                      14,000 -28,000 57,000 42,000 
          deferred offering costs included in accounts payable and accrued liabilities
                          
          depreciation and amortization
                       4,187,000 4,565,000 4,091,000 
          net amortization or accretion on marketable securities
                       475,000 467,000 552,000 
          loss on property equipment and disposals
                       84,000   
          non-cash expense in connection with asset acquisition
                          
          loss on remeasurement of convertible preferred stock tranche liabilities
                          
          expense in connection with equity issuances
                          
          prepaid expenses and other assets
                        -176,000  
          non-cash deemed dividends on convertible preferred stock
                          
          payments for the repurchase of preferred stock
                          
          remeasurement of operating lease right of use asset for lease modification
                         -228,000 
          other
                          
          prepaid expense and other assets
                          
          accrued liabilities and other liabilities