LRMR Larimar Therapeutics, Inc.
Larimar Therapeutics, Inc. (LRMR) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
Where they traded
Last open-market purchase: July 6, 2026 , by Hamilton Thomas Edward .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Hamilton Thomas Edward | Director | Buy | 50,000 | $3.34 | $166.9K | 714,798 | |
| 4 fills | Buy | 5,000,000 | $5.00 | $25.0M | 10,622,957 | ||
| Hamilton Thomas Edward | Director | Buy | 100,000 | $5.00 | $500.0K | 664,798 | |
| SHERMAN JEFFREY W | Director | Buy | 5,000 | $5.00 | $25.0K | 5,000 | |
| THOMAS FRANK E | Director | Buy | 5,000 | $5.00 | $25.0K | 7,000 |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.