Insider Trading for ATRA
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
Acquisitions: 195.2K shares
Dispositions: 55.4K shares
Net: 139.8K shares
Insiders have been net buyers recently, potentially signaling confidence in the company's short-term prospects.
Quarterly Activity (3 Months)
Acquisitions: 762.6K shares
Dispositions: 376.5K shares
Net: 386.1K shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Apr 6, 2024 to Jul 22, 2026
Touchon Pascal
DirectorDirector
-102.5K shares
7 transactions
EcoR1 Capital, LLC
Other10 Percent Owner
+507.4K shares
2 transactions
Hyllengren Eric J
OtherChief Financial Officer
+17.4K shares
13 transactions
Redmile Group, LLC
DirectorDirector
-3.3M shares
7 transactions
Panacea Innovation Ltd
Other10 Percent Owner
-627.6K shares
12 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jul 22, 2026 | Redmile Group, LLC | DDirector | Exercise | 195.2K | $0.00 | $0.00 | 636.9K | View |
| Jul 22, 2026 | Redmile Group, LLC | DDirector | Payment In Kind | 60 | $0.00 | $0.00 | 636.9K | View |
| Jul 22, 2026 | Redmile Group, LLC | DDirector | Exercise | 55.4K | $0.00 | $138.47 | 0 | View |
Jun 26, 2026 | Locked | — | — | — | — | — | — | — |
Jun 11, 2026 | Locked | — | — | — | — | — | — | — |
Jun 11, 2026 | Locked | — | — | — | — | — | — | — |
Jun 9, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 9, 2026 | Locked | — | — | — | — | — | — | — |
May 18, 2026 | Locked | — | — | — | — | — | — | — |
May 18, 2026 | Locked | — | — | — | — | — | — | — |
May 7, 2026 | Locked | — | — | — | — | — | — | — |
May 7, 2026 | Locked | — | — | — | — | — | — | — |
May 7, 2026 | Locked | — | — | — | — | — | — | — |
Mar 17, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 17, 2026 | Locked | — | — | — | — | — | — | — |
Mar 9, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 2, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 2, 2026 | Locked | — | — | — | — | — | — | — |
Jan 12, 2026 | Locked | — | — | — | — | — | — | — |
Nov 28, 2025 | Locked | — | — | — | — | — | — | — |
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Aug 18, 2025 | Locked | — | — | — | — | — | — | — |
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Aug 18, 2025 | Locked | — | — | — | — | — | — | — |
Aug 15, 2025 | Locked | — | — | — | — | — | — | — |
Jul 17, 2025 | Locked | — | — | — | — | — | — | — |
Jun 10, 2025 | Locked | — | — | — | — | — | — | — |
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Jun 10, 2025 | Locked | — | — | — | — | — | — | — |
May 16, 2025 | Locked | — | — | — | — | — | — | — |
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May 16, 2025 | Locked | — | — | — | — | — | — | — |
May 16, 2025 | Locked | — | — | — | — | — | — | — |
Mar 31, 2025 | Locked | — | — | — | — | — | — | — |
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Mar 31, 2025 | Locked | — | — | — | — | — | — | — |
Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
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Mar 3, 2025 | Locked | — | — | — | — | — | — | — |
Jan 27, 2025 | Locked | — | — | — | — | — | — | — |
Nov 18, 2024 | Locked | — | — | — | — | — | — | — |
Nov 18, 2024 | Locked | — | — | — | — | — | — | — |
Nov 18, 2024 | Locked | — | — | — | — | — | — | — |
Sep 9, 2024 | Locked | — | — | — | — | — | — | — |
Sep 3, 2024 | Locked | — | — | — | — | — | — | — |
Sep 3, 2024 | Locked | — | — | — | — | — | — | — |
Aug 16, 2024 | Locked | — | — | — | — | — | — | — |
Aug 16, 2024 | Locked | — | — | — | — | — | — | — |
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Aug 16, 2024 | Locked | — | — | — | — | — | — | — |
Aug 12, 2024 | Locked | — | — | — | — | — | — | — |
Aug 12, 2024 | Locked | — | — | — | — | — | — | — |
Aug 12, 2024 | Locked | — | — | — | — | — | — | — |
Jul 31, 2024 | Locked | — | — | — | — | — | — | — |
May 16, 2024 | Locked | — | — | — | — | — | — | — |
May 16, 2024 | Locked | — | — | — | — | — | — | — |
Apr 6, 2024 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of ATRA stock, which is typically a strong positive signal.