Matthew Scott Harris serves as Executive at Altimmune, Inc., where they oversee executive responsibilities. Since joining the company, Matthew Scott Harris has executed 26 insider transactions totaling $308.0K, demonstrating a bearish approach to their equity position. Their most recent transaction on Jul 31, 2025 involved receiving (via award) 2,018 shares valued at $6.3K.
Matthew Scott Harris currently holds 16,087 shares of Altimmune, Inc. (ALT), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Matthew Scott Harris has been a net seller of ALT stock. They have purchased $42.2K and sold $265.8K worth of shares.
Matthew Scott Harris's most recent insider trade was on Jul 31, 2025, when they sold 2,018 shares at $3.14 per share.
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| $5.41 |
| Discretionary |
| Feb 2, 2024 | ALT | $21.7K | Payment | 2,332 | $9.32 | Discretionary |
| Feb 2, 2024 | ALT | $0 | Option Exercise | 7,775 | $N/A | Discretionary |
| Feb 1, 2024 | ALT | $17.8K | Payment | 1,801 | $9.88 | Discretionary |
| Feb 1, 2024 | ALT | $0 | Option Exercise | 6,166 | $N/A | Discretionary |
| Jan 31, 2024 | ALT | $8.8K | Award | 3,257 | $2.69 | Discretionary |
| Jan 30, 2024 | ALT | $26.5K | Payment | 2,709 | $9.80 | Discretionary |
| Jan 30, 2024 | ALT | $0 | Option Exercise | 9,275 | $N/A | Discretionary |
| Jul 31, 2023 | ALT | $1.9K | Award | 691 | $2.81 | Discretionary |
| Mar 23, 2023 | ALT | $42.2K | Purchase | 10,000 | $4.22 | Discretionary |
| Feb 2, 2023 | ALT | $35.6K | Payment | 2,364 | $15.04 | Discretionary |
| Feb 2, 2023 | ALT | $0 | Option Exercise | 7,775 | $N/A | Discretionary |
| Feb 1, 2023 | ALT | $0 | Option Exercise | 6,166 | $N/A | Discretionary |
| Feb 1, 2023 | ALT | $30.1K | Payment | 2,183 | $13.78 | Discretionary |
| Jan 31, 2023 | ALT | $13.2K | Award | 1,296 | $10.21 | Discretionary |
| Jul 31, 2022 | ALT | $7.4K | Award | 1,076 | $6.86 | Discretionary |
| Feb 28, 2022 | ALT | $225.6K | Sale | 30,000 | $7.52 | Discretionary |
| Feb 28, 2022 | ALT | $57.6K | Option Exercise | 30,000 | $1.92 | Discretionary |
| Feb 1, 2022 | ALT | $17.4K | Payment | 2,183 | $7.98 | Discretionary |
| Feb 1, 2022 | ALT | $0 | Option Exercise | 6,166 | $N/A | Discretionary |
| Jan 31, 2022 | ALT | $12.3K | Award | 1,800 | $6.86 | Discretionary |
| Jul 31, 2021 | ALT | $5.6K | Award | 725 | $7.71 | Discretionary |
| Jan 31, 2021 | ALT | $11.8K | Award | 968 | $12.14 | Discretionary |
| Nov 12, 2020 | ALT | $40.2K | Sale | 4,015 | $10.02 | Discretionary |
| Jul 31, 2020 | ALT | $11.8K | Award | 8,084 | $1.46 | Discretionary |