William K. Heiden serves as Executive at AMAG PHARMACEUTICALS INC., where they oversee executive responsibilities. Since joining the company, William K. Heiden has executed 62 insider transactions totaling $7.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Aug 20, 2025 involved purchasing 49,500 shares valued at $73.8K.
William K. Heiden currently holds 111,000 shares of AMAG PHARMACEUTICALS INC. (AMAG), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William K. Heiden has been a net seller of AMAG stock. They have purchased $282.5K and sold $7.3M worth of shares.
William K. Heiden's most recent insider trade was on Aug 20, 2025, when they purchased 49,500 shares at $1.49 per share.
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| $1.52 |
| Discretionary |
| May 20, 2024 | MGNX | $0 | Option Exercise | 4,500 | $N/A | Discretionary |
| Mar 31, 2024 | ATRA | $0 | Award | 150,000 | $N/A | Discretionary |
| Nov 10, 2023 | ATRA | $25.0K | Purchase | 100,000 | $0.25 | Discretionary |
| May 31, 2023 | ATRA | $0 | Award | 57,000 | $N/A | Discretionary |
| Jun 23, 2022 | ATRA | $0 | Award | 20,500 | $N/A | Discretionary |
| Jun 8, 2021 | ATRA | $0 | Award | 11,000 | $N/A | Discretionary |
| Jun 16, 2020 | ATRA | $0 | Award | 8,000 | $N/A | Discretionary |
| Mar 2, 2020 | AMAG | $34.5K | Payment | 4,451 | $7.75 | Discretionary |
| Feb 25, 2020 | AMAG | $26.8K | Payment | 3,033 | $8.84 | Discretionary |
| Feb 23, 2020 | AMAG | $28.1K | Payment | 2,960 | $9.50 | Discretionary |
| Jun 27, 2019 | ATRA | $0 | Award | 4,000 | $N/A | Discretionary |
| May 9, 2019 | AMAG | $107.0K | Purchase | 10,000 | $10.70 | Discretionary |
| Mar 2, 2019 | AMAG | $65.9K | Payment | 4,467 | $14.76 | Discretionary |
| Mar 1, 2019 | AMAG | $52.2K | Payment | 3,535 | $14.76 | Discretionary |
| Feb 25, 2019 | AMAG | $0 | Award | 132,000 | $N/A | Discretionary |
| Feb 25, 2019 | AMAG | $0 | Award | 31,000 | $N/A | Discretionary |
| Feb 23, 2019 | AMAG | $45.9K | Payment | 2,957 | $15.51 | Discretionary |
| Aug 7, 2018 | AMAG | $125.0K | Sale | 5,000 | $25.00 | Discretionary |
| Jun 14, 2018 | ATRA | $0 | Award | 1,500 | $N/A | Discretionary |
| Jun 4, 2018 | AMAG | $500.0K | Sale | 20,000 | $25.00 | Discretionary |
| Mar 2, 2018 | AMAG | $221.5K | Payment | 10,546 | $21.00 | Discretionary |
| Mar 2, 2018 | AMAG | $0 | Award | 45,500 | $N/A | Discretionary |
| Mar 2, 2018 | AMAG | $0 | Award | 45,500 | $N/A | Discretionary |
| Jun 8, 2017 | ATRA | $0 | Award | 5,000 | $N/A | Discretionary |
| May 8, 2017 | AMAG | $354.0K | Payment | 19,085 | $18.55 | Discretionary |
| Feb 23, 2017 | AMAG | $0 | Award | 55,000 | $N/A | Discretionary |
| Feb 23, 2017 | AMAG | $0 | Award | 30,000 | $N/A | Discretionary |
| Jan 3, 2017 | ATRA | $0 | Award | 2,000 | $N/A | Discretionary |