David Hallal serves as Executive at ALEXION PHARMACEUTICALS INC, where they oversee executive responsibilities. Since joining the company, David Hallal has executed 164 insider transactions totaling $64.9M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 9, 2026 involved receiving (via award) 128,004 shares valued at $0.
David Hallal currently holds 1,669,649 shares of ALEXION PHARMACEUTICALS INC (ALXN), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David Hallal has been a net seller of ALXN stock. They have purchased $0 and sold $64.9M worth of shares.
David Hallal's most recent insider trade was on Feb 9, 2026, when they sold 128,004 shares at $0.00 per share.
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| $42.70 |
| Discretionary |
| Oct 8, 2025 | SRRK | $0 | Gift | 205,000 | $N/A | Discretionary |
| Jun 12, 2024 | SEER | $0 | Award | 58,178 | $N/A | Discretionary |
| Jun 6, 2024 | ALVR | $0 | Award | 35,000 | $N/A | Discretionary |
| Jun 14, 2023 | SEER | $0 | Award | 23,443 | $N/A | Discretionary |
| May 11, 2023 | ALVR | $0 | Award | 35,000 | $N/A | Discretionary |
| Oct 19, 2022 | ALVR | $5.1M | Sale | 600,000 | $8.45 | Discretionary |
| Sep 29, 2022 | ALVR | $2.9M | Sale | 400,000 | $7.35 | Discretionary |
| Jul 28, 2022 | ALVR | $15.0M | Award | 3,253,796 | $4.61 | Discretionary |
| Jul 21, 2022 | ALVR | $22.5K | Sale | 4,227 | $5.33 | Discretionary |
| Jun 15, 2022 | SEER | $0 | Award | 9,945 | $N/A | Discretionary |
| Jun 9, 2022 | ITOS | $22.8K | Sale | 1,171 | $19.51 | Discretionary |
| Jun 9, 2022 | ITOS | $5.0K | Option Exercise | 1,171 | $4.23 | Discretionary |
| Jun 8, 2022 | ITOS | $35.1K | Option Exercise | 11,899 | $2.95 | Discretionary |
| Jun 8, 2022 | ITOS | $121.7K | Sale | 5,968 | $20.39 | Discretionary |
| Jun 8, 2022 | ITOS | $25.2K | Option Exercise | 5,968 | $4.23 | Discretionary |
| Jun 8, 2022 | ITOS | $210.1K | Sale | 10,577 | $19.86 | Discretionary |
| Jun 8, 2022 | ITOS | $242.6K | Sale | 11,899 | $20.39 | Discretionary |
| Jun 8, 2022 | ITOS | $44.7K | Option Exercise | 10,577 | $4.23 | Discretionary |
| Jun 3, 2022 | ALVR | $241.2K | Sale | 65,725 | $3.67 | Discretionary |
| Apr 21, 2022 | ALVR | $24.8K | Sale | 4,227 | $5.87 | Discretionary |
| Mar 11, 2022 | ALVR | $186.0K | Sale | 25,244 | $7.37 | Discretionary |
| Mar 10, 2022 | ALVR | $305.6K | Sale | 40,481 | $7.55 | Discretionary |
| Jan 24, 2022 | ALVR | $137.0K | Sale | 17,100 | $8.01 | Discretionary |
| Dec 20, 2021 | ITOS | $86.0K | Option Exercise | 20,000 | $4.30 | Discretionary |
| Dec 20, 2021 | ITOS | $88.5K | Option Exercise | 30,000 | $2.95 | Discretionary |
| Dec 20, 2021 | ITOS | $2.2M | Sale | 50,000 | $43.57 | Discretionary |
| Jan 21, 2021 | ALVR | $0 | Award | 147,000 | $N/A | Discretionary |
| Aug 3, 2020 | ALVR | $0 | Conversion | 738,153 | $N/A | Discretionary |