Updated Jul 16, 2026 · Last SEC filing 2026-07-01
Climb Bio, Inc. (CLYM) has filed 11 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-01. 8 Form 8-K material event filings were reported by CLYM in the last 90 days. 1 Form 144 notices of proposed sale were filed for CLYM stock. InsiderAlpha tracks every CLYM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Pharmaceutical Preparations (SIC 2834) |
|---|---|
| SEC CIK | 0001768446 |
| Form 4 filings (90d) | 11 |
|---|---|
| Form 8-K filings (90d) | 8 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-07-01 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Brennan Aoife | President and CEO | S — Open-market sale | 30.9K | $13.17 | $407K | SEC | |
| Brennan Aoife | President and CEO | M — Option exercise | 68.8K | — | — | SEC | |
| Thomas Stephen Basil | Insider | S — Open-market sale [10b5-1] | 16.3K | $7.01 | $114K | SEC | |
| Thomas Stephen Basil | Insider | S — Open-market sale [10b5-1] | 33.7K | $7.00 | $236K | SEC | |
| Thomas Stephen Basil | Insider | S — Open-market sale [10b5-1] | 10.0K | $5.81 | $58K | SEC | |
| Thomas Stephen Basil | Insider | S — Open-market sale [10b5-1] | 90.0K | $5.23 | $471K | SEC | |
| RA CAPITAL MANAGEMENT, L.P. | Insider | P — Open-market purchase | 7.1K | $3.50 | $25K | SEC | |
| Thomas Stephen Basil | Insider | A — Grant or award | 100.4K | $0.00 | — | SEC | |
| Brennan Aoife | President and CEO | S — Open-market sale | 20.6K | $1.22 | $25K | SEC | |
| Brennan Aoife | President and CEO | M — Option exercise | 68.8K | — | — | SEC | |
| Thomas Stephen Basil | Insider | M — Option exercise | 25.1K | — | — | SEC | |
| Pimblett Emily | CHIEF ACCOUNTING OFFICER | S — Open-market sale [10b5-1] | 1.2K | $2.02 | $2K | SEC | |
| Pimblett Emily | CHIEF ACCOUNTING OFFICER | M — Option exercise [10b5-1] | 5.0K | — | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Climb Bio, Inc. (CLYM). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Brennan Aoife | 3 | $407K |
| RA CAPITAL MANAGEMENT, L.P. | 3 | $20.01M |
| Cumbo Alexander | 1 | — |
| Thomas Stephen Basil | 1 | — |
| WILLIAMS DOUGLAS E | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in CLYM insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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