Doberstein Stephen K
Insider CIK 1480111 · DRNA Director · FBRX Director · NKTR SVP & Chief Scientific Officer
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 31,000 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 2,000 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 1,000 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 1,000 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 18,353 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 2,000 | — | $0 | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 18,353 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 31,000 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 2,000 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 1,000 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 1,000 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | D To issuer deriv | 2026-08-27 | 2026-08-27 | 2,000 | — | — | 0 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2026-05-29 | 2026-06-02 | 18,353 | — | $0 | 18,353 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2025-03-20 | 2025-03-21 | 31,000 | — | $0 | 31,000 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2024-08-20 | 2024-08-22 | 50,000 | — | $0 | 50,000 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2023-09-19 | 2023-09-20 | 25,000 | — | $0 | 25,000 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2022-06-01 | 2022-06-02 | 25,000 | — | $0 | 25,000 | SEC↗ |
| FBRX Forte Biosciences, Inc. | A Award deriv | 2022-05-12 | 2022-05-16 | 50,000 | — | $0 | 50,000 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | D To issuer deriv | 2021-12-28 | 2021-12-29 | 25,000 | — | $0 | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | D To issuer deriv | 2021-12-28 | 2021-12-29 | 3,333 | — | $0 | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | D To issuer deriv | 2021-12-28 | 2021-12-29 | 15,000 | — | $0 | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | D To issuer deriv | 2021-12-28 | 2021-12-29 | 15,000 | — | $0 | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | U Tender | 2021-12-28 | 2021-12-29 | 3,333 | $38.25 | $127.5K | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | A Award deriv | 2021-06-03 | 2021-06-07 | 15,000 | — | $0 | 15,000 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | A Award deriv | 2021-06-03 | 2021-06-07 | 3,333 | — | $0 | 3,333 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | M Exercise deriv | 2021-06-03 | 2021-06-07 | 3,333 | — | $0 | 0 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | M Exercise | 2021-06-03 | 2021-06-07 | 3,333 | — | $0 | 3,333 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | A Award deriv | 2020-06-15 | 2020-06-16 | 3,333 | — | $0 | 3,333 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | A Award deriv | 2020-06-15 | 2020-06-16 | 15,000 | — | $0 | 15,000 | SEC↗ |
| DRNA Dicerna Pharmaceuticals In | A Award deriv | 2020-03-12 | 2020-03-16 | 25,000 | — | $0 | 25,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | P Buy | 2019-09-05 | 2019-09-09 | 15,000 | $17.28 | $259.2K | 107,668 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2019-08-16 | 2019-08-19 | 3,245 | $18.15 | $58.9K | 92,668 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2019-05-16 | 2019-05-17 | 3,461 | $31.37 | $108.6K | 95,913 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2019-02-19 | 2019-02-21 | 3,310 | $42.39 | $140.3K | 99,374 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2018-12-14 | 2018-12-18 | 48,400 | — | $0 | 48,400 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2018-12-14 | 2018-12-18 | 23,950 | — | $0 | 102,684 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2018-11-16 | 2018-11-19 | 4,524 | $38.25 | $173.0K | 78,734 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | D To issuer | 2018-08-16 | 2018-08-16 | 6,701 | $58.40 | $391.3K | 83,258 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2018-08-15 | 2018-08-16 | 65,000 | — | $0 | 65,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2018-08-15 | 2018-08-16 | 26,000 | — | $0 | 89,959 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2018-05-16 | 2018-05-18 | 3,435 | $83.39 | $286.4K | 63,959 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2018-04-09 | 2018-04-09 | 49,500 | — | $0 | 0 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2018-04-09 | 2018-04-09 | 49,500 | $96.13 | $4.76M | 67,394 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2018-04-09 | 2018-04-09 | 49,500 | $7.21 | $356.9K | 116,894 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2018-04-06 | 2018-04-09 | 50,000 | — | $0 | 0 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2018-04-06 | 2018-04-09 | 60,000 | — | $0 | 0 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2018-04-06 | 2018-04-09 | 500 | — | $0 | 49,500 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2018-04-06 | 2018-04-09 | 60,000 | $10.69 | $641.4K | 127,394 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2018-04-06 | 2018-04-09 | 50,000 | $7.21 | $360.5K | 177,394 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2018-04-06 | 2018-04-09 | 500 | $7.21 | $3.6K | 177,894 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2018-04-06 | 2018-04-09 | 110,500 | $91.69 | $10.13M | 67,394 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2018-02-16 | 2018-02-20 | 2,426 | $82.94 | $201.2K | 67,394 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2017-12-15 | 2017-12-19 | 65,000 | — | $0 | 65,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2017-12-15 | 2017-12-19 | 26,000 | — | $0 | 69,820 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | D To issuer | 2017-11-16 | 2017-11-17 | 4,782 | $44.23 | $211.5K | 43,820 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2017-11-15 | 2017-11-17 | 43,750 | — | $0 | 43,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2017-11-15 | 2017-11-17 | 17,500 | — | $0 | 48,602 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2017-11-08 | 2017-11-08 | 300,000 | — | $0 | 0 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2017-11-08 | 2017-11-08 | 300,000 | $9.53 | $2.86M | 331,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-11-08 | 2017-11-08 | 300,000 | $30.09 | $9.03M | 31,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2017-11-07 | 2017-11-08 | 75,409 | — | $0 | 300,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-11-07 | 2017-11-08 | 75,409 | $25.78 | $1.94M | 31,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2017-11-07 | 2017-11-08 | 75,409 | $9.53 | $718.6K | 106,511 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2017-11-06 | 2017-11-08 | 20,914 | — | $0 | 375,409 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-11-06 | 2017-11-08 | 20,914 | $24.98 | $522.4K | 31,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2017-11-06 | 2017-11-08 | 20,914 | $9.53 | $199.3K | 52,016 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2017-10-05 | 2017-10-10 | 43,677 | — | $0 | 396,323 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2017-10-05 | 2017-10-10 | 43,677 | $9.53 | $416.2K | 74,779 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-10-05 | 2017-10-10 | 43,677 | $24.97 | $1.09M | 31,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-08-16 | 2017-08-18 | 1,701 | $19.32 | $32.9K | 31,102 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-05-16 | 2017-05-18 | 1,701 | $19.55 | $33.3K | 32,803 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise deriv | 2017-04-05 | 2017-04-07 | 100,000 | — | $0 | 440,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2017-04-05 | 2017-04-07 | 100,000 | $9.53 | $953.0K | 134,504 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-04-05 | 2017-04-07 | 100,000 | $21.70 | $2.17M | 34,504 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2017-02-16 | 2017-02-17 | 1,261 | $13.14 | $16.6K | 34,504 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2016-12-13 | 2016-12-15 | 43,750 | — | $0 | 43,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2016-12-13 | 2016-12-15 | 17,500 | — | $0 | 35,765 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2016-11-16 | 2016-11-18 | 670 | $13.96 | $9.4K | 18,265 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2016-08-16 | 2016-08-17 | 1,336 | $17.56 | $23.5K | 18,935 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2016-07-14 | 2016-07-18 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2016-07-14 | 2016-07-18 | 8,750 | — | $0 | 8,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award | 2016-07-14 | 2016-07-18 | 10,500 | — | $0 | 11,521 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2016-05-17 | 2016-05-18 | 339 | $13.58 | $4.6K | 1,021 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | D To issuer deriv | 2016-05-16 | 2016-05-18 | 875 | — | $0 | 8,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2016-05-16 | 2016-05-18 | 875 | — | $0 | 1,360 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | S Sale | 2016-02-17 | 2016-02-18 | 390 | $11.92 | $4.6K | 485 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | D To issuer deriv | 2016-02-16 | 2016-02-18 | 875 | — | $0 | 9,625 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | M Exercise | 2016-02-16 | 2016-02-18 | 875 | — | $0 | 875 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2015-12-15 | 2016-01-15 | 10,500 | — | $0 | 10,500 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2015-12-15 | 2016-01-15 | 8,750 | — | $0 | 8,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2015-12-15 | 2015-12-17 | 8,750 | — | $0 | 8,750 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2015-12-15 | 2015-12-17 | 10,500 | — | $0 | 10,500 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2014-12-09 | 2014-12-11 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2014-12-09 | 2014-12-11 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2014-02-05 | 2014-02-07 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2014-02-05 | 2014-02-07 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2013-02-06 | 2013-02-08 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2013-02-06 | 2013-02-08 | 50,000 | — | $0 | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2012-02-08 | 2012-02-10 | 50,000 | $7.21 | $360.5K | 50,000 | SEC↗ |
| NKTR NEKTAR THERAPEUTICS | A Award deriv | 2012-02-08 | 2012-02-10 | 50,000 | $7.21 | $360.5K | 50,000 | SEC↗ |