NASDAQ : NKTR
$0.62 (0.88%)
0.70%
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0.00
change: -48.8695 | last: 0.488712.34M
| Filing Date | Reporting Person | Amount Beneficially Owned | % of Class |
|---|---|---|---|
| 2026-05-15 | BIOTECHNOLOGY VALUE FUND L P | 1.52M | 5.30% |
| 2026-05-06 | FMR LLC | 4.3M | 15.00% |
| 2026-04-17 | Two Seas Capital LP | 1.96M | 6.80% |
| 2026-03-27 | The Vanguard Group | - | 0.00% |
| 2026-03-06 | FMR LLC | 3.04M | 11.10% |
| 2026-02-13 | G1 Execution Services, LLC | 809.97K | 4.00% |
| 2026-01-30 | The Vanguard Group | 1.03M | 5.04% |
| 2025-11-14 | Nantahala Capital Management, LLC | 418.52K | 2.20% |
| 2025-11-14 | TCG Crossover GP II, LLC | - | 0.00% |
| 2025-11-13 | Susquehanna Portfolio Strategies, LLC | 1.24M | 6.30% |
| 2025-10-31 | The Vanguard Group | 948.65K | 4.98% |
| 2025-10-28 | Integrated Core Strategies (US) LLC | 333.58K | 1.80% |
| 2025-08-14 | TCG Crossover GP II, LLC | 1.93M | 9.30% |
| 2025-08-14 | Nantahala Capital Management, LLC | 709.76K | 5.72% |
| 2025-07-18 | BlackRock, Inc. | 203.02K | 1.60% |
| 2025-07-09 | BIOTECHNOLOGY VALUE FUND L P | 661.76K | 3.80% |
| 2025-07-03 | Integrated Core Strategies (US) LLC | 815.95K | 4.70% |
| 2025-05-15 | SAMLYN CAPITAL, LLC | - | 0.00% |
| 2025-04-17 | BlackRock, Inc. | 12.53M | 6.70% |
| 2025-02-14 | Deep Track Capital, LP | 1.98M | 1.07% |
| 2025-02-14 | Samlyn Capital, LLC | 9.67M | 5.20% |
| 2025-02-14 | Eventide Asset Management, LLC | 6.65M | 3.61% |
| 2024-11-14 | Eventide Asset Management, LLC | 9.4M | 5.11% |
| 2024-11-14 | Finny Kuruvilla, M.D. Ph. D. | 9.4M | 5.11% |
| 2024-11-14 | Robin C. John | 9.4M | 5.11% |
| 2024-11-08 | (1) BlackRock, Inc. | 15.97M | 8.70% |
| 2024-10-22 | (1) BlackRock, Inc. | 15.97M | 8.70% |
| 2024-03-15 | Chen Yu | 20.05M | 9.90% |
| 2024-03-15 | TCG Crossover GP II, LLC | 20.05M | 9.90% |
| 2024-03-15 | TCG Crossover Fund II, L.P. | 20.05M | 9.90% |
| 2023-08-17 | Peter Kolchinsky | 18.7M | 9.80% |
| 2023-08-17 | Rajeev Shah | 18.7M | 9.80% |
| 2023-08-17 | RA Capital Healthcare Fund, L.P. | 18.7M | 9.80% |
| 2023-08-17 | RA Capital Management, L.P. | 18.7M | 9.80% |
| 2023-07-03 | Citadel Securities Group LP | 6.0 | 1.20% |
| 2023-04-14 | Deep Track Capital, LP | 12.3M | 6.50% |
| 2023-04-14 | Deep Track Biotechnology Master Fund, Ltd. | 12.3M | 6.50% |
| 2023-04-14 | David Kroin | 12.3M | 6.50% |
| 2022-02-11 | 98-0557567 | 36.89M | 20.00% |
| 2022-02-10 | PRIMECAP Management Company | 17.41M | 9.43% |
| 2022-02-04 | Wellington Investment Advisors Holdings LLP | 11.38M | 6.17% |
| 2022-02-04 | Wellington Group Holdings LLP | 11.38M | 6.17% |
| 2022-02-04 | Wellington Management Group LLP | 11.38M | 6.17% |
| 2022-02-04 | Wellington Management Company LLP | 11.38M | 6.17% |
| 2022-01-27 | (1) BlackRock, Inc. | 26.67M | 14.50% |
| 2022-01-26 | (1) BlackRock, Inc. | 26.67M | 14.50% |
| 2022-01-10 | The Vanguard Group - 23-1945930 | 18.51M | 10.03% |
| 2021-12-10 | FMR LLC | 9.47M | 5.13% |
| 2021-02-12 | 98-0557567 | 35.46M | 19.80% |
| 2021-02-12 | PRIMECAP Management Company 95-3868081 | 18.44M | 10.28% |
| 2021-02-10 | The Vanguard Group - 23-1945930 | 16.27M | 9.07% |
| 2021-02-04 | Wellington Management Group LLP | 13.39M | 7.47% |
| 2021-01-27 | (1) BlackRock, Inc. | 18.38M | 10.20% |
| 2020-03-10 | FMR LLC | 18.7M | 10.53% |
| 2020-02-12 | The Vanguard Group - 23-1945930 | 16.16M | 9.18% |
| 2020-02-12 | PRIMECAP Management Company 95-3868081 | 20.08M | 11.41% |
| 2020-02-07 | Abigail P. Johnson | 14.94M | 8.49% |
| 2020-02-07 | FMR LLC | 14.94M | 8.49% |
| 2020-02-07 | 98-0557567 | 31.63M | 18.00% |
| 2020-02-04 | (1) BlackRock, Inc. | 18.42M | 10.50% |
| 2020-01-27 | Wellington Investment Advisors Holdings LLP | 16.2M | 9.21% |
| 2020-01-27 | Wellington Management Company LLP | 15.81M | 8.99% |
| 2020-01-27 | Wellington Management Group LLP | 16.2M | 9.21% |
| 2020-01-27 | Wellington Group Holdings LLP | 16.2M | 9.21% |
| 2019-11-08 | (1) BlackRock, Inc. | 18.73M | 10.70% |
| 2019-10-10 | 98-0557567 | 34.64M | 19.80% |
| 2019-08-12 | Abigail P. Johnson | 17.16M | 9.85% |
| 2019-08-12 | FMR LLC | 17.16M | 9.85% |
| 2019-06-10 | 98-0557567 | 21.98M | 12.60% |
| 2019-02-13 | FMR LLC | 25.96M | 15.00% |
| 2019-02-13 | Abigail P. Johnson | 25.96M | 15.00% |
| 2019-02-12 | Wellington Group Holdings LLP | 10.74M | 6.21% |
| 2019-02-12 | Wellington Management Company LLP | 10.28M | 5.94% |
| 2019-02-12 | Wellington Investment Advisors Holdings LLP | 10.74M | 6.21% |
| 2019-02-12 | Wellington Management Group LLP | 10.74M | 6.21% |
| 2019-02-06 | (1) BlackRock, Inc. | 12.98M | 7.50% |
| 2018-07-10 | (1) BlackRock, Inc. | 12.67M | 7.40% |
| 2018-03-12 | FMR LLC | 19.69M | 12.28% |
| 2018-02-27 | PRIMECAP Management Company 95-3868081 | 22.36M | 14.20% |
| 2018-02-06 | OppenheimerFunds, Inc. | 14.6M | 9.27% |
| 2018-01-19 | (1) BlackRock, Inc. | 21.43M | 13.60% |
| 2017-12-08 | OppenheimerFunds, Inc. | 15.09M | 9.59% |
| 2017-12-08 | Oppenheimer Global Opportunities Fund | 14.6M | 9.27% |
| 2017-02-10 | BLUM CAPITAL PARTNERS, L.P. | 6.52M | 15.10% |
| 2017-02-09 | PRIMECAP Management Company 95-3868081 | 21.44M | 14.03% |
| 2017-01-26 | OppenheimerFunds, Inc. | 25.01M | 16.36% |
| 2017-01-26 | Oppenheimer Global Opportunities Fund | 25M | 16.36% |
| 2016-02-12 | PRIMECAP Management Company 95-3868081 | 19.78M | 14.81% |
| 2016-02-10 | Saba Capital Management, L.P. | 601.39K | 12.20% |
| 2016-02-04 | OppenheimerFunds, Inc. | 26M | 19.48% |
| 2016-02-04 | Oppenheimer Global Opportunities Fund | 26M | 19.48% |
| 2016-01-28 | First Trust Portfolios L.P., First Trust Advisors L.P., The Charger Corporation | 9.6M | 7.19% |
| 2015-07-10 | (1) BlackRock, Inc. | 14.58M | 11.10% |
| 2015-02-10 | LIBERTY MEDIA CORPORATION | 91.8M | 33.00% |
| 2015-01-29 | (1) BlackRock, Inc. | 8.64M | 6.70% |
| 2014-02-14 | HealthCor Long Master GP, LLC | - | 0.00% |
| 2014-02-14 | HealthCor Long Offshore Master Fund, L.P. | - | 0.00% |
| 2014-02-14 | HealthCor Offshore GP, LLC | - | 0.00% |
| 2014-02-14 | HealthCor Management, L.P. | - | 0.00% |
| 2014-02-14 | HealthCor Associates, LLC | - | 0.00% |
| 2014-02-14 | HealthCor Offshore Master Fund, L.P. | - | 0.00% |
| 2014-02-14 | Joseph Healey | - | 0.00% |
| 2014-02-14 | Arthur Cohen | - | 0.00% |
| 2014-02-14 | HealthCor Group, LLC | - | 0.00% |
| 2014-02-12 | Prescott Group Capital Management, L.L.C. | 15.07M | 21.80% |
| 2014-01-30 | (1) BlackRock, Inc. | 8.07M | 6.90% |
| 2013-11-07 | PRIMECAP Management Company 95-3868081 | 12.01M | 10.38% |
| 2013-02-14 | HealthCor Group, LLC | 11M | 9.55% |
| 2013-02-14 | HealthCor Offshore Master Fund, L.P. | 10.78M | 9.36% |
| 2013-02-14 | HealthCor Offshore GP, LLC | 10.78M | 9.36% |
| 2013-02-14 | HealthCor Hybrid Offshore GP, LLC | - | 0.00% |
| 2013-02-14 | Arthur Cohen | 11M | 9.55% |
| 2013-02-14 | Joseph Healey | 11M | 9.55% |
| 2013-02-14 | HealthCor Long Offshore Master Fund, L.P. | 225K | 0.20% |
| 2013-02-14 | HealthCor Long Master GP, LLC | 225K | 0.20% |
| 2013-02-14 | HealthCor Hybrid Offshore Master Fund, L.P. | - | 0.00% |
| 2013-02-14 | HealthCor Management, L.P. | 11M | 9.55% |
| 2013-02-14 | HealthCor Associates, LLC | 11M | 9.55% |
| 2013-02-13 | 2. | 22.7M | 19.71% |
| 2013-02-13 | 2. | 22.7M | 19.71% |
| 2013-02-12 | T. ROWE PRICE ASSOCIATES, INC. | 20.61M | 6.40% |
| 2013-02-12 | Federated Investors, Inc. | 5.83M | 5.06% |
| 2013-02-05 | (1) BlackRock, Inc. | 7.37M | 6.40% |
| 2012-02-13 | (1) BlackRock, Inc. | 6.9M | 6.03% |
| 2012-02-10 | Mark N. Lampert | 7.64M | 6.70% |
| 2012-02-10 | Biotechnology Value Fund, L.P. | 459.3K | 1.00% |
| 2012-02-10 | Investment 10, L.L.C. | 151.1K | 1.00% |
| 2012-02-10 | BVF Investments, L.L.C. | 6.75M | 5.90% |
| 2012-02-10 | BVF Partners L.P. | 7.64M | 6.70% |
| 2012-02-10 | BVF Inc. | 7.64M | 6.70% |
| 2012-02-10 | Biotechnology Value Fund II, L.P. | 281.4K | 1.00% |
| 2011-12-23 | Mark N. Lampert | 7.42M | 6.50% |
| 2011-12-23 | Biotechnology Value Fund, L.P. | 459.3K | 1.00% |
| 2011-12-23 | BVF Inc. | 7.42M | 6.50% |
| 2011-12-23 | BVF Partners L.P. | 7.42M | 6.50% |
| 2011-12-23 | Biotechnology Value Fund II, L.P. | 281.4K | 1.00% |
| 2011-12-23 | BVF Investments, L.L.C. | 6.52M | 5.70% |
| 2011-12-23 | Investment 10, L.L.C. | 151.1K | 1.00% |
| 2011-04-07 | PRIMECAP Management Company 95-3868081 | 6.13M | 5.39% |
| 2011-02-07 | (1) BlackRock, Inc. | 5.76M | 6.11% |
| 2010-02-09 | N. Lampert | 525.5K | 1.00% |
| 2010-02-09 | Investments, L.L.C. | 292.27K | 1.00% |
| 2010-02-09 | Value Fund II, L.P. | 82069.0 | 1.00% |
| 2010-02-09 | Partners L.P. | 525.5K | 1.00% |
| 2010-02-09 | Inc. | 525.5K | 1.00% |
| 2010-02-09 | 10, L.L.C. | 21000.0 | 1.00% |
| 2010-02-09 | Value Fund, L.P. | 130.16K | 1.00% |
| 2010-02-03 | Oppenheimer Global Opportunities Fund | 18.47M | 19.82% |
| 2010-02-03 | OppenheimerFunds, Inc. | 18.47M | 19.82% |
| 2010-01-29 | BlackRock for purposes of Schedule 13G filings. | 6.31M | 6.77% |
| 2009-04-09 | OppenheimerFunds, Inc. | 18.45M | 19.94% |
| 2009-04-09 | Oppenheimer Global Opportunities Fund | 18.11M | 19.58% |
| 2009-02-05 | 04-3519872 | 6.91M | 7.47% |
| 2009-01-27 | OppenheimerFunds, Inc. | 18.94M | 20.49% |
| 2009-01-27 | Oppenheimer Global Opportunities Fund | 18.11M | 19.59% |
| 2008-10-10 | Investment 10, L.L.C. | 505K | 0.55% |
| 2008-10-10 | Biotechnology Value Fund II, L.P. | 1.18M | 1.28% |
| 2008-10-10 | Biotechnology Value Fund, L.P. | 1.71M | 1.85% |
| 2008-10-10 | BVF Partners L.P. | 7.46M | 8.08% |
| 2008-10-10 | BVF Inc. | 7.46M | 8.08% |
| 2008-10-10 | BVF Investments, L.L.C. | 4.07M | 4.40% |
| 2008-02-14 | Teachers Advisors, Inc. | 72927.0 | 0.08% |
| 2008-02-14 | TIAA-CREF Investment Management, LLC | 682.24K | 0.74% |
| 2007-02-14 | TIAA-CREF Investment Management, LLC | 5.39M | 5.97% |
| 2007-02-14 | Teachers Advisors, Inc. | 363.92K | 0.40% |
| 2007-01-25 | Wells Fargo & Company | 5.36M | 5.93% |
| 2005-02-09 | Columbia Wanger Asset Management, L.P. 04-3519872 | 1.98M | 2.40% |
| 2005-02-09 | WAM Acquisition GP, Inc. | 1.98M | 2.40% |
| 2003-02-13 | BARCLAYS PRIVATE BANK AND TRUST LIMITED (Sussie) | - | 0.00% |
| 2003-02-13 | BARCLAYS CAPITAL SECURITIES LIMITED | - | 0.00% |
| 2003-02-13 | BARCLAYS GLOBAL INVESTORS, LTD | - | 0.00% |
| 2003-02-13 | 943112180 | 1.54M | 2.78% |
| 2003-02-13 | BARCLAYS GLOBAL FUND ADVISORS | 1.32M | 2.38% |
| 2003-02-13 | BARCLAYS TRUST AND BANKING COMPANY (JAPAN) LIMITED | - | 0.00% |
| 2003-02-13 | BARCLAYS LIFE ASSURANCE COMPANY LIMITED | - | 0.00% |
| 2003-02-13 | BARCLAYS BANK PLC | - | 0.00% |
| 2003-02-13 | BARCLAYS PRIVATE BANK AND TRUST (JERSEY) LIMITED | - | 0.00% |
| 2003-02-13 | BARCLAYS PRIVATE BANK & TRUST (ISLE OF MAN) LIMITED | - | 0.00% |
| 2003-02-13 | BARCLAYS CAPITAL INVESTMENTS | - | 0.00% |
| 2003-02-13 | BARCLAYS BANK TRUST COMPANY LIMITED | - | 0.00% |
| 2003-02-12 | Massachusetts Financial Services Company ("MFS") | 2.72M | 4.90% |
| 2003-02-11 | Massachusetts Financial Services Company ("MFS") | 2.72M | 4.90% |
| 2002-02-14 | Franklin Resources, Inc. | 6.63M | 12.10% |
| 2002-02-12 | Massachusetts Financial Services Company ("MFS") | 3.23M | 5.90% |
| 2002-02-05 | 52-0556948 | 611K | 1.10% |
| 2001-02-12 | Franklin Resources, Inc. | 6.74M | 14.90% |
| 2001-02-08 | 52-0556948 | 2.57M | 5.60% |
| 2001-02-07 | 13-2722082 | 1.55M | 3.42% |
| 2001-02-07 | 94-3244780 | 1.55M | 3.42% |
| 2001-02-07 | 94-3244780 | 1.55M | 3.42% |
| 2000-07-07 | 52-0556948 | 1.38M | 6.60% |
| 2000-07-07 | 52-0791372 | 725K | 3.40% |
| 2000-02-07 | 52-0791372 | 875K | 5.10% |
| 2000-02-07 | 52-0556948 | 2.13M | 12.40% |
| 2000-01-25 | Franklin Resources, Inc. | 2.63M | 14.50% |
| 1999-11-08 | Franklin Resources, Inc. | 2.58M | 14.30% |
| 1999-02-09 | 52-0791372 | 852.55K | 5.40% |
| 1999-02-09 | 52-0556948 | 1.82M | 11.50% |
| 1999-01-28 | Franklin Resources, Inc. | 1.52M | 9.70% |
| 1998-09-15 | BAXTER INTERNATIONAL INC. | 1.34M | 8.60% |
| 1998-05-08 | Franklin Resources, Inc. | 1.59M | 10.30% |
| 1998-02-04 | Franklin Resources, Inc. | 1.37M | 9.00% |
| 1997-02-13 | Edward C. Johnson 3d | 552.1K | 4.67% |
| 1997-02-13 | Abigail P. Johnson | 552.1K | 4.67% |
| 1997-02-13 | 04-2507163) | 552.1K | 4.67% |
| 1996-02-14 | ###-##-####) | 652K | 6.44% |
| 1996-02-14 | ###-##-####) | 652K | 6.44% |
| 1996-02-14 | 04-2507163) | 652K | 6.44% |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2025-12-31 | $42.28 | 16.87M | $713.3M | $15.12M | $148.91M | $847.09M |
| 2024-12-31 | $13.95 | 13.71M | $191.26M | $44.25M | $102.56M | $249.58M |
| 2023-12-31 | $8.48 | 12.67M | $107.41M | $35.28M | $117.78M | $189.91M |
| 2022-12-31 | $33.90 | 12.48M | $422.93M | $88.23M | $131.5M | $466.2M |
| 2021-12-31 | $202.65 | 12.22M | $2.48B | $25.22M | $143.18M | $2.59B |
| 2020-12-31 | $255.00 | 11.91M | $3.04B | $198.96M | $150.29M | $2.99B |
| 2019-12-31 | $323.85 | 11.67M | $3.78B | $96.36M | $408.14M | $4.09B |
| 2018-12-31 | $493.05 | 12.01M | $5.92B | $194.9M | $246.95M | $5.97B |
| 2017-12-31 | $895.80 | 10.4M | $9.31B | $4.76M | $245.21M | $9.55B |
| 2016-12-31 | $184.05 | 9.3M | $1.71B | $59.64M | $248.6M | $1.9B |
| Date | Stock Price | Shares Outstanding | Market Cap | Cash & Equivalents | Total Debt | Enterprise Value |
|---|---|---|---|---|---|---|
| 2026-03-31 | $71.95 | 24.74M | $1.78B | $131.87M | $143.43M | $1.79B |
| 2025-12-31 | $42.28 | 20.3M | $858.15M | $15.12M | $148.91M | $991.94M |
| 2025-09-30 | $56.90 | 14.09M | $801.57M | $41.03M | $91.92M | $852.45M |
| 2025-06-30 | $25.84 | 14.09M | $364.02M | $42.99M | $96.16M | $417.18M |
| 2025-03-31 | $10.20 | 14.06M | $143.43M | $38.89M | $100.34M | $204.87M |
| 2024-12-31 | $13.95 | 13.98M | $195.06M | $44.25M | $102.56M | $253.37M |
| 2024-09-30 | $19.50 | 13.95M | $272.02M | $30.11M | $108.26M | $350.18M |
| 2024-06-30 | $18.30 | 13.92M | $254.77M | $13.92M | $219.61M | $460.46M |
| 2024-03-31 | $13.56 | 12.98M | $176.05M | $48.64M | $114.08M | $241.49M |
| 2023-12-31 | $8.48 | 12.74M | $108M | $35.28M | $117.78M | $190.5M |
| 2023-09-30 | $8.93 | 12.69M | $113.36M | $64.92M | $121.29M | $169.72M |
| 2023-06-30 | $8.70 | 12.64M | $110M | $50.73M | $124.75M | $184.02M |