Updated Jul 16, 2026 · Last SEC filing 2026-07-08
Larimar Therapeutics, Inc. (LRMR) has filed 7 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 3 Form 8-K material event filings were reported by LRMR in the last 90 days. InsiderAlpha tracks every LRMR 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 | 0001374690 |
| Form 4 filings (90d) | 7 |
|---|---|
| Form 8-K filings (90d) | 3 |
| Latest Form 4 filing | 2026-07-08 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Hamilton Thomas Edward | Insider | P — Open-market purchase | 50.0K | $3.34 | $167K | SEC | |
| Flynn James E | Director | P — Open-market purchase | 1.08M | $5.00 | $5.42M | SEC | |
| Hamilton Thomas Edward | Insider | P — Open-market purchase | 100.0K | $5.00 | $500K | SEC | |
| THOMAS FRANK E | Insider | P — Open-market purchase | 5.0K | $5.00 | $25K | SEC | |
| SHERMAN JEFFREY W | Insider | P — Open-market purchase | 5.0K | $5.00 | $25K | SEC | |
| Flynn James E | Director | P — Open-market purchase | 1.08M | $5.00 | $5.42M | SEC | |
| Flynn James E | Director | P — Open-market purchase | 832.0K | $5.00 | $4.16M | SEC | |
| Flynn James E | Director | P — Open-market purchase | 2.00M | $5.00 | $10.00M | SEC | |
| Shankar Gopi | Chief Development Officer | A — Grant or award | 25.6K | $0.00 | — | SEC | |
| Celano Michael | Chief Financial Officer | A — Grant or award | 37.6K | $0.00 | — | SEC | |
| Clayton Russell | Chief Medical Officer | A — Grant or award | 25.6K | $0.00 | — | SEC | |
| BEN-MAIMON CAROLE | President and CEO | A — Grant or award | 100.1K | $0.00 | — | SEC | |
| Flynn James E | Director | P — Open-market purchase | 2.60M | $3.20 | $8.32M | SEC | |
| Flynn James E | Director | P — Open-market purchase | 3.39M | $3.20 | $10.84M | SEC | |
| Flynn James E | Director | P — Open-market purchase | 3.39M | $3.20 | $10.84M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Larimar Therapeutics, Inc. (LRMR). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Hamilton Thomas Edward | 2 | $167K |
| Flynn James E | 1 | — |
| SHERMAN JEFFREY W | 1 | — |
| LEFF JONATHAN S | 1 | — |
| THOMAS FRANK E | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in LRMR 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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