HEIDEN WILLIAM K
Insider CIK 1214939 · MGNX Director · ATRA Director · AMAG President and CEO, Director
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| ATRA Atara Biotherapeutics, Inc | A Award | 2026-06-09 | 2026-06-11 | 12,000 | — | $0 | 34,188 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2026-05-19 | 2026-05-20 | 3,750 | — | $0 | 3,750 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2026-05-19 | 2026-05-20 | 22,000 | — | $0 | 22,000 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise deriv | 2026-05-18 | 2026-05-20 | 3,750 | — | $0 | 0 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise | 2026-05-18 | 2026-05-20 | 3,750 | — | $0 | 114,750 | SEC↗ |
| MGNX MACROGENICS INC | P Buy | 2025-08-20 | 2025-08-21 | 49,500 | $1.49 | $73.8K | 111,000 | SEC↗ |
| MGNX MACROGENICS INC | P Buy | 2025-08-19 | 2025-08-21 | 50,500 | $1.52 | $76.8K | 61,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2025-06-10 | 2025-06-12 | 7,828 | — | $0 | 22,188 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2025-05-21 | 2025-05-22 | 3,750 | — | $0 | 3,750 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2025-05-21 | 2025-05-22 | 22,000 | — | $0 | 22,000 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise deriv | 2025-05-20 | 2025-05-22 | 6,500 | — | $0 | 0 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise | 2025-05-20 | 2025-05-22 | 6,500 | — | $0 | 11,000 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2024-05-21 | 2024-05-23 | 16,500 | — | $0 | 16,500 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2024-05-21 | 2024-05-23 | 6,500 | — | $0 | 6,500 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise deriv | 2024-05-20 | 2024-05-22 | 4,500 | — | $0 | 0 | SEC↗ |
| MGNX MACROGENICS INC | M Exercise | 2024-05-20 | 2024-05-22 | 4,500 | — | $0 | 4,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2024-03-31 | 2024-04-02 | 150,000 | — | $0 | 359,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | P Buy | 2023-11-10 | 2023-11-14 | 100,000 | $0.25 | $25.0K | 209,000 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2023-05-31 | 2023-06-02 | 19,000 | — | $0 | 19,000 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2023-05-31 | 2023-06-02 | 4,500 | — | $0 | 4,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2023-05-31 | 2023-06-02 | 79,500 | — | $0 | 79,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2023-05-31 | 2023-06-02 | 57,000 | — | $0 | 109,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2022-06-23 | 2022-06-27 | 31,500 | — | $0 | 31,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2022-06-23 | 2022-06-27 | 20,500 | — | $0 | 52,000 | SEC↗ |
| MGNX MACROGENICS INC | A Award deriv | 2022-05-23 | 2022-05-24 | 36,000 | — | $0 | 36,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2021-06-08 | 2021-06-09 | 17,500 | — | $0 | 17,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2021-06-08 | 2021-06-09 | 11,000 | — | $0 | 31,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2020-06-16 | 2020-06-17 | 24,500 | — | $0 | 24,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2020-06-16 | 2020-06-17 | 8,000 | — | $0 | 20,500 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS, INC. | F Tax w/h | 2020-03-02 | 2020-03-04 | 4,451 | $7.75 | $34.5K | 424,612 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS, INC. | F Tax w/h | 2020-02-25 | 2020-02-25 | 3,033 | $8.84 | $26.8K | 484,063 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS, INC. | F Tax w/h | 2020-02-23 | 2020-02-25 | 2,960 | $9.50 | $28.1K | 487,096 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2019-06-27 | 2019-07-01 | 13,000 | — | $0 | 13,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2019-06-27 | 2019-07-01 | 4,000 | — | $0 | 12,500 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | P Buy | 2019-05-09 | 2019-05-09 | 10,000 | $10.70 | $107.0K | 490,056 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2019-03-02 | 2019-03-05 | 4,467 | $14.76 | $65.9K | 480,056 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2019-03-01 | 2019-03-05 | 3,535 | $14.76 | $52.2K | 484,523 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2019-02-25 | 2019-02-27 | 70,000 | — | $0 | 70,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2019-02-25 | 2019-02-27 | 132,000 | — | $0 | 488,058 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2019-02-25 | 2019-02-27 | 31,000 | — | $0 | 356,058 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2019-02-23 | 2019-02-26 | 2,957 | $15.51 | $45.9K | 325,058 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2018-08-07 | 2018-08-08 | 5,000 | $25.00 | $125.0K | 328,015 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2018-06-14 | 2018-06-18 | 5,000 | — | $0 | 5,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2018-06-14 | 2018-06-18 | 1,500 | — | $0 | 8,500 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2018-06-04 | 2018-06-05 | 20,000 | $25.00 | $500.0K | 333,015 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2018-03-02 | 2018-03-06 | 100,000 | — | $0 | 100,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2018-03-02 | 2018-03-06 | 10,546 | $21.00 | $221.5K | 353,015 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2018-03-02 | 2018-03-06 | 45,500 | — | $0 | 363,561 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2018-03-02 | 2018-03-06 | 45,500 | — | $0 | 318,061 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2017-06-08 | 2017-06-12 | 21,500 | — | $0 | 21,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2017-06-08 | 2017-06-12 | 5,000 | — | $0 | 7,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2017-05-08 | 2017-05-10 | 19,085 | $18.55 | $354.0K | 272,561 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2017-02-23 | 2017-02-27 | 65,000 | — | $0 | 65,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2017-02-23 | 2017-02-27 | 55,000 | — | $0 | 291,646 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2017-02-23 | 2017-02-27 | 30,000 | — | $0 | 236,646 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2017-01-03 | 2017-01-05 | 5,500 | — | $0 | 5,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2017-01-03 | 2017-01-05 | 2,000 | — | $0 | 2,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2016-05-16 | 2016-05-17 | 11,812 | $18.27 | $215.8K | 206,646 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2016-03-01 | 2016-03-01 | 85,000 | — | $0 | 85,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2016-03-01 | 2016-03-01 | 36,000 | — | $0 | 218,458 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2016-02-29 | 2016-03-01 | 1,701 | $26.28 | $44.7K | 182,458 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2016-02-27 | 2016-03-01 | 1,843 | $27.01 | $49.8K | 184,159 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2016-02-26 | 2016-03-01 | 4,070 | $27.01 | $109.9K | 186,002 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2016-02-26 | 2016-03-01 | 10,649 | $27.01 | $287.6K | 190,072 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2016-01-04 | 2016-01-05 | 10,500 | — | $0 | 10,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2015-11-23 | 2015-11-25 | 15,500 | — | $0 | 15,500 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-10-01 | 2015-10-02 | 2,000 | $39.69 | $79.4K | 200,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-09-01 | 2015-09-02 | 2,000 | $61.19 | $122.4K | 202,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-08-03 | 2015-08-05 | 2,000 | $64.53 | $129.1K | 204,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise deriv | 2015-07-15 | 2015-07-17 | 20,000 | — | $0 | 210,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-07-15 | 2015-07-17 | 20,000 | $75.00 | $1.50M | 206,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise | 2015-07-15 | 2015-07-17 | 20,000 | $12.99 | $259.8K | 226,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-07-01 | 2015-07-02 | 2,000 | $69.41 | $138.8K | 206,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise deriv | 2015-06-05 | 2015-06-08 | 60,000 | — | $0 | 230,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-06-05 | 2015-06-08 | 6,642 | $68.90 | $457.6K | 262,079 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise | 2015-06-05 | 2015-06-08 | 60,000 | $12.99 | $779.4K | 268,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-06-05 | 2015-06-08 | 6,875 | $68.14 | $468.5K | 208,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-06-05 | 2015-06-08 | 4,680 | $70.69 | $330.8K | 220,849 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-06-05 | 2015-06-08 | 12,128 | $71.52 | $867.4K | 208,721 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | S Sale | 2015-06-05 | 2015-06-08 | 36,550 | $69.77 | $2.55M | 225,529 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2015-06-02 | 2015-06-04 | 11,378 | $67.77 | $771.1K | 215,596 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2015-03-03 | 2015-03-05 | 2,474 | $49.70 | $123.0K | 226,974 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2015-02-26 | 2015-02-27 | 60,000 | — | $0 | 60,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2015-02-26 | 2015-02-27 | 30,000 | — | $0 | 229,448 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2014-12-17 | 2014-12-18 | 9,890 | $40.49 | $400.4K | 199,448 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2014-08-19 | 2014-08-21 | 30,000 | — | $0 | 209,338 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2014-08-19 | 2014-08-21 | 10,000 | — | $0 | 179,338 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2014-02-27 | 2014-02-28 | 93,800 | — | $0 | 93,800 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2014-02-27 | 2014-02-28 | 15,600 | — | $0 | 169,338 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise deriv | 2013-05-24 | 2013-05-28 | 10,000 | — | $0 | 290,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise | 2013-05-24 | 2013-05-28 | 10,000 | $12.99 | $129.9K | 153,738 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise deriv | 2013-05-14 | 2013-05-15 | 25,000 | — | $0 | 75,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | F Tax w/h | 2013-05-14 | 2013-05-15 | 8,162 | $25.03 | $204.3K | 68,738 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | M Exercise | 2013-05-14 | 2013-05-15 | 25,000 | — | $0 | 76,900 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2013-02-28 | 2013-03-04 | 86,300 | — | $0 | 86,300 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2013-02-28 | 2013-03-04 | 14,400 | — | $0 | 24,400 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award | 2013-02-28 | 2013-03-04 | 27,500 | — | $0 | 51,900 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | P Buy | 2012-05-25 | 2012-05-29 | 5,000 | — | $0 | 10,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | P Buy | 2012-05-24 | 2012-05-29 | 5,000 | — | $0 | 5,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2012-05-14 | 2012-05-16 | 100,000 | — | $0 | 100,000 | SEC↗ |
| AMAG AMAG PHARMACEUTICALS INC. | A Award deriv | 2012-05-14 | 2012-05-16 | 300,000 | — | $0 | 300,000 | SEC↗ |