Insider Trading for CBIO
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: 1.4M shares
Dispositions: 0 shares
Net: 1.4M shares
Insiders have been net buyers recently, potentially signaling confidence in the company's short-term prospects.
Quarterly Activity (3 Months)
Acquisitions: 1.4M shares
Dispositions: 68.2K shares
Net: 1.4M shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Mar 23, 2023 to Jul 16, 2026
Fairmount Funds Management LLC
DirectorDirector, 10 Percent Owner:
+2.9M shares
6 transactions
Brumm Joshua T
ExecutiveCorporate Officer
+539.0K shares
5 transactions
McNeill Jonathan
ExecutiveChief Operating Officer
+255.8K shares
5 transactions
Pinkas Jan
ExecutiveCorporate Officer
+233.7K shares
6 transactions
Semerjian Harout
ExecutiveCorporate Officer
+695.0K shares
1 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jul 16, 2026 | Fairmount Funds Management LLC | DDirector, 10 Percent Owner: | Purchase | 853.5K | $14.50 | $12,375,025.00 | 3.6M | View |
| Jul 16, 2026 | Fairmount Funds Management LLC | DDirector, 10 Percent Owner: | Purchase | 525.9K | $0.00 | $525.90 | 2.3M | View |
| Jun 22, 2026 | Lynch Ryan | EOfficer: See Remarks | Sale | 465 | $17.99 | $8,365.35 | 13.9K | View |
Jun 22, 2026 | Locked | — | — | — | — | — | — | — |
Jun 22, 2026 | Locked | — | — | — | — | — | — | — |
Jun 22, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 22, 2026 | Locked | — | — | — | — | — | — | — |
Jun 22, 2026 | Locked | — | — | — | — | — | — | — |
Jun 2, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 2, 2026 | Locked | — | — | — | — | — | — | — |
Dec 15, 2025 | Locked | — | — | — | — | — | — | — |
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Dec 8, 2025 | Locked | — | — | — | — | — | — | — |
Dec 8, 2025 | Locked | — | — | — | — | — | — | — |
Dec 4, 2025 | Locked | — | — | — | — | — | — | — |
Dec 4, 2025 | Locked | — | — | — | — | — | — | — |
Jul 16, 2025 | Locked | — | — | — | — | — | — | — |
Jul 7, 2025 | Locked | — | — | — | — | — | — | — |
Jun 23, 2025 | Locked | — | — | — | — | — | — | — |
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Jun 23, 2025 | Locked | — | — | — | — | — | — | — |
Jun 23, 2025 | Locked | — | — | — | — | — | — | — |
Jun 23, 2025 | Locked | — | — | — | — | — | — | — |
Aug 8, 2024 | Locked | — | — | — | — | — | — | — |
Aug 7, 2024 | Locked | — | — | — | — | — | — | — |
Aug 6, 2024 | Locked | — | — | — | — | — | — | — |
Aug 5, 2024 | Locked | — | — | — | — | — | — | — |
Aug 2, 2024 | Locked | — | — | — | — | — | — | — |
Aug 1, 2024 | Locked | — | — | — | — | — | — | — |
Jul 30, 2024 | Locked | — | — | — | — | — | — | — |
Jul 29, 2024 | Locked | — | — | — | — | — | — | — |
Jul 26, 2024 | Locked | — | — | — | — | — | — | — |
Jul 25, 2024 | Locked | — | — | — | — | — | — | — |
Jun 21, 2024 | Locked | — | — | — | — | — | — | — |
Jun 20, 2024 | Locked | — | — | — | — | — | — | — |
Jun 18, 2024 | Locked | — | — | — | — | — | — | — |
May 1, 2024 | Locked | — | — | — | — | — | — | — |
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May 1, 2024 | Locked | — | — | — | — | — | — | — |
May 1, 2024 | Locked | — | — | — | — | — | — | — |
May 1, 2024 | Locked | — | — | — | — | — | — | — |
May 1, 2024 | Locked | — | — | — | — | — | — | — |
Mar 29, 2024 | Locked | — | — | — | — | — | — | — |
Mar 29, 2024 | Locked | — | — | — | — | — | — | — |
Mar 29, 2024 | Locked | — | — | — | — | — | — | — |
Jan 12, 2024 | Locked | — | — | — | — | — | — | — |
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Jan 12, 2024 | Locked | — | — | — | — | — | — | — |
Dec 29, 2023 | Locked | — | — | — | — | — | — | — |
Dec 29, 2023 | Locked | — | — | — | — | — | — | — |
Dec 29, 2023 | Locked | — | — | — | — | — | — | — |
Sep 30, 2023 | Locked | — | — | — | — | — | — | — |
Sep 30, 2023 | Locked | — | — | — | — | — | — | — |
Sep 30, 2023 | Locked | — | — | — | — | — | — | — |
Sep 22, 2023 | Locked | — | — | — | — | — | — | — |
Sep 21, 2023 | Locked | — | — | — | — | — | — | — |
Jun 1, 2023 | Locked | — | — | — | — | — | — | — |
Jun 1, 2023 | Locked | — | — | — | — | — | — | — |
May 19, 2023 | Locked | — | — | — | — | — | — | — |
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May 19, 2023 | Locked | — | — | — | — | — | — | — |
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May 19, 2023 | Locked | — | — | — | — | — | — | — |
May 19, 2023 | Locked | — | — | — | — | — | — | — |
May 17, 2023 | Locked | — | — | — | — | — | — | — |
May 10, 2023 | Locked | — | — | — | — | — | — | — |
May 8, 2023 | Locked | — | — | — | — | — | — | — |
Mar 23, 2023 | Locked | — | — | — | — | — | — | — |
Mar 23, 2023 | Locked | — | — | — | — | — | — | — |
Mar 23, 2023 | 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 CBIO stock, which is typically a strong positive signal.