William C. Bertrand Jr serves as Executive at MEDIMMUNE INC /DE, where they oversee executive responsibilities. Since joining the company, William C. Bertrand Jr has executed 37 insider transactions totaling $428.1K, demonstrating a bullish approach to their equity position. Their most recent transaction on Aug 28, 2025 involved selling 207,000 shares valued at $2.1K.
William C. Bertrand Jr currently holds 986,352 shares of MEDIMMUNE INC /DE (MEDI), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William C. Bertrand Jr has been a net buyer of MEDI stock. They have purchased $242.8K and sold $185.3K worth of shares.
William C. Bertrand Jr's most recent insider trade was on Aug 28, 2025, when they sold 207,000 shares at $0.01 per share.
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| $N/A |
| Discretionary |
| Jan 17, 2024 | ADAP | $3.6K | Sale | 5,309 | $0.67 | Discretionary |
| Jan 17, 2024 | ADAP | $9.1K | Sale | 13,599 | $0.67 | Discretionary |
| Jan 16, 2024 | ADAP | $3.7K | Sale | 4,681 | $0.79 | Discretionary |
| Jan 12, 2024 | ADAP | $4.4K | Sale | 5,220 | $0.85 | Discretionary |
| Jan 11, 2024 | ADAP | $3.4K | Sale | 4,009 | $0.84 | Discretionary |
| Jun 15, 2023 | ARDX | $0 | Award | 16,581 | $N/A | Discretionary |
| Jan 17, 2023 | ADAP | $8.3K | Sale | 4,440 | $1.86 | Discretionary |
| Jan 12, 2023 | ADAP | $8.5K | Sale | 4,973 | $1.71 | Discretionary |
| Jan 11, 2023 | ADAP | $6.7K | Sale | 3,843 | $1.75 | Discretionary |
| Jan 4, 2023 | ADAP | $6.1K | Sale | 3,584 | $1.69 | Discretionary |
| Jun 15, 2022 | ARDX | $0 | Award | 118,613 | $N/A | Discretionary |
| Jan 18, 2022 | ADAP | $13.9K | Sale | 4,368 | $3.19 | Discretionary |
| Jan 12, 2022 | ADAP | $8.0K | Sale | 2,248 | $3.54 | Discretionary |
| Jan 11, 2022 | ADAP | $13.4K | Sale | 3,770 | $3.56 | Discretionary |
| Jan 4, 2022 | ADAP | $14.2K | Sale | 3,490 | $4.06 | Discretionary |
| Jul 2, 2021 | ADAP | $18.6K | Sale | 4,375 | $4.26 | Discretionary |
| Jun 16, 2021 | ARDX | $0 | Award | 8,891 | $N/A | Discretionary |
| Jan 12, 2021 | ADAP | $13.7K | Sale | 2,234 | $6.15 | Discretionary |
| Jan 4, 2021 | ADAP | $18.6K | Sale | 3,499 | $5.33 | Discretionary |
| Dec 14, 2020 | ARDX | $106.2K | Award | 15,000 | $7.08 | Discretionary |
| Dec 14, 2020 | ADAP | $142.8K | Purchase | 207,000 | $0.69 | Discretionary |
| Jun 9, 2020 | ARDX | $0 | Award | 7,523 | $N/A | Discretionary |
| Jan 14, 2020 | ADAP | $12.3K | Sale | 2,397 | $5.13 | Discretionary |
| Jan 6, 2020 | ADAP | $4.5K | Sale | 3,731 | $1.20 | Discretionary |
| Jun 13, 2019 | ARDX | $0 | Award | 18,248 | $N/A | Discretionary |
| Jan 14, 2019 | ADAP | $12.2K | Sale | 2,271 | $5.37 | Discretionary |
| Jun 13, 2018 | ARDX | $0 | Award | 12,406 | $N/A | Discretionary |
| Jun 7, 2017 | ARDX | $0 | Award | 11,627 | $N/A | Discretionary |