10 insiders reported 41 Form 4 transactions for Climb Bio, Inc. (CLYM) over the past 18 months (most recent 2026-09-17). Recent activity: Thomas Stephen Basil (Director) Sell 100,000 shares, Brennan Aoife (President and CEO) Buy 68,750 shares, Brennan Aoife (President and CEO) Sell 30,902 shares, Thomas Stephen Basil (Director) Sell 33,687 shares, Thomas Stephen Basil (Director) Sell 16,313 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-17 | Thomas Stephen Basil | Director | Sell | 100,000 | $1.4M |
| 2026-06-30 | Brennan Aoife | President and CEO | Buy | 68,750 | $0 |
| 2026-06-30 | Brennan Aoife | President and CEO | Sell | 30,902 | $406,979 |
| 2026-02-27 | Thomas Stephen Basil | Director | Sell | 33,687 | $235,809 |
| 2026-02-27 | Thomas Stephen Basil | Director | Sell | 16,313 | $114,354 |
| 2026-02-17 | Thomas Stephen Basil | Director | Sell | 90,000 | $470,700 |
| 2026-02-17 | Thomas Stephen Basil | Director | Sell | 10,000 | $58,100 |
| 2026-01-07 | RA Capital Healthcare Fund LP | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | RA CAPITAL MANAGEMENT, L.P. | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | Kolchinsky Peter | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | Shah Rajeev M. | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | RA Capital Nexus Fund, L.P. | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | RA Capital Nexus Fund III, L.P. | Director | Buy | 7,111 | $24,888 |
| 2026-01-07 | RA Capital Nexus Fund II, L.P. | Director | Buy | 7,111 | $24,888 |
| 2025-12-15 | Shah Rajeev M. | Director | Buy | 213,099 | $464,556 |
| 2025-12-15 | RA Capital Healthcare Fund LP | Director | Sell | 20.4M | $0 |
| 2025-12-15 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 20.4M | $0 |
| 2025-12-15 | Kolchinsky Peter | Director | Sell | 20.4M | $0 |
| 2025-12-15 | Shah Rajeev M. | Director | Sell | 20.4M | $0 |
| 2025-12-15 | RA Capital Nexus Fund, L.P. | Director | Sell | 20.4M | $0 |
| 2025-12-15 | RA Capital Nexus Fund II, L.P. | Director | Sell | 20.4M | $0 |
| 2025-12-15 | RA Capital Nexus Fund III, L.P. | Director | Sell | 20.4M | $0 |
| 2025-12-15 | RA Capital Healthcare Fund LP | Director | Buy | 213,099 | $464,556 |
| 2025-12-15 | RA CAPITAL MANAGEMENT, L.P. | Director | Buy | 213,099 | $464,556 |
| 2025-12-15 | Kolchinsky Peter | Director | Buy | 213,099 | $464,556 |
Source: SEC Form 4 filings · as of 2026-09-17