6 insiders reported 12 Form 4 transactions for Galera Therapeutics, Inc. (GRTX) over the past 18 months (most recent 2026-08-05). Recent activity: Sorensen Mel (President and CEO) Sell 975 shares, Alleva Lawrence M (Director) Sell 11 shares, FRIEDMAN MICHAEL R. (Director) Buy 3.0M shares, CHANG NANCY T (Director) Sell 47,434 shares, Alleva Lawrence M (Director) Sell 40 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-05 | Sorensen Mel | President and CEO | Sell | 975 | $0 |
| 2026-08-05 | Alleva Lawrence M | Director | Sell | 11 | $0 |
| 2026-08-05 | FRIEDMAN MICHAEL R. | Director | Buy | 3.0M | $0 |
| 2026-08-05 | CHANG NANCY T | Director | Sell | 47,434 | $0 |
| 2026-08-05 | Alleva Lawrence M | Director | Sell | 40 | $0 |
| 2026-08-05 | FRIEDMAN MICHAEL R. | Director | Sell | 41,631 | $0 |
| 2026-08-05 | CHANG NANCY T | Director | Buy | 661,309 | $0 |
| 2026-05-29 | Opler Timothy | 10% Owner | Buy | 20.8M | $0 |
| 2026-05-29 | Emerald Bioventures, LLC | 10% Owner | Buy | 20.8M | $0 |
| 2026-04-09 | CHANG NANCY T | Director | Buy | 1.2M | $0 |
| 2026-04-09 | FRIEDMAN MICHAEL R. | Director | Buy | 5.3M | $0 |
| 2025-11-24 | Sorensen Mel | President and CEO | Sell | 70,000 | $1,400 |
Source: SEC Form 4 filings · as of 2026-08-05