LRMR insider buying – Larimar Therapeutics, Inc.
18 insider purchases since 2016 worth $136.6M by 10 different insiders. Last 12 months: 5 purchases, $25.9M. Most recent filing: 2026-11-12.
Small company Public float $95M (latest 10-K, SEC). Share prices of small companies usually swing much more than those of large ones, in both directions, and are easier to move with little trading.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Deerfield Mgmt HIF, L.P. Director | $90.0M 3× · 25,486,108 sh | 2022-09-16 2026-02-27 | – | 35,606,974 shares as of 2026-03-02 | Holds - never sold |
| Deerfield Mgmt L.P. Director | $37.5M 1× · 4,290,617 sh | 2024-02-16 2024-02-16 | – | 21,231,974 shares as of 2024-02-16 | Holds - never sold |
| Deerfield Mgmt IV, L.P. Director | $6.0M 1× · 685,710 sh | 2021-06-30 2021-06-30 | – | 5,830,249 shares as of 2021-07-02 | Holds - never sold |
| Hamilton Thomas Edward Director | $2.9M 6× · 651,378 sh | 2021-06-30 2026-11-12 | – | 874,231 shares as of 2026-07-08 | Holds - never sold |
| BEN-MAIMON CAROLE CEO | $118,550 2× · 36,746 sh | 2022-09-16 2023-05-17 | – | 399,431 shares as of 2026-01-27 | Holds - never sold |
| SHERMAN JEFFREY W Director | $25,000 1× · 5,000 sh | 2026-02-27 2026-02-27 | – | 5,000 shares as of 2026-03-02 | Holds - never sold |
| THOMAS FRANK E Director | $22,000 1× · 2,000 sh | 2024-02-14 2024-02-14 | – | 7,000 shares as of 2026-03-02 | Holds - never sold |
| Shankar Gopi Officer | $18,650 1× · 5,000 sh | 2023-12-07 2023-12-07 | – | 76,443 shares as of 2026-01-27 | Holds - never sold |
| Celano Michael CFO | $18,650 1× · 5,000 sh | 2023-05-17 2023-05-17 | – | 215,785 shares as of 2026-01-27 | Holds - never sold |
| Truitt Joseph Director | $10,258 1× · 2,750 sh | 2023-05-17 2023-05-17 | – | 2,750 shares as of 2023-05-18 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 5 | $25.9M | 3 | – | – |
| 2025 | 1 | $30.0M | 1 | – | – |
| 2024 | 3 | $38.0M | 3 | – | – |
| 2023 | 4 | $66,108 | 4 | – | – |
| 2022 | 3 | $36.1M | 3 | – | – |
| 2021 | 2 | $6.5M | 2 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-12 | Hamilton Thomas Edward | Director | 70,000 | $2.67 | $187,082 | New | SEC |
| 2026-07-08 | Hamilton Thomas Edward | Director | 50,000 | $3.34 | $167,000 | +7.5% | SEC |
| 2026-03-02 | SHERMAN JEFFREY W | Director | 5,000 | $5.00 | $25,000 | SEC | |
| 2026-03-02 | Hamilton Thomas Edward | Director | 100,000 | $5.00 | $500,000 | +17.7% | SEC |
| 2026-03-02 | Deerfield Mgmt HIF, L.P. | Director | 5,000,000 | $5.00 | $25.0M | +88.9% | SEC |
| 2025-08-04 | Deerfield Mgmt HIF, L.P. | Director | 9,375,000 | $3.20 | $30.0M | +5718.4% | SEC |
| 2024-05-31 | Hamilton Thomas Edward | Director | 57,208 | $8.74 | $499,998 | +11.3% | SEC |
| 2024-02-16 | Deerfield Mgmt L.P. | Director | 4,290,617 | $8.74 | $37.5M | +230.6% | SEC |
| 2024-02-15 | THOMAS FRANK E | Director | 2,000 | $11.00 | $22,000 | SEC | |
| 2023-12-08 | Shankar Gopi | Officer | 5,000 | $3.73 | $18,650 | SEC | |
| 2023-05-18 | Truitt Joseph | Director | 2,750 | $3.73 | $10,258 | SEC | |
| 2023-05-18 | Celano Michael | CFO | 5,000 | $3.73 | $18,650 | +4.6% | SEC |
| 2023-05-18 | BEN-MAIMON CAROLE | CEO | 5,000 | $3.71 | $18,550 | +1.9% | SEC |
| 2022-09-20 | Hamilton Thomas Edward | Director | 317,460 | $3.15 | $999,999 | +167.0% | SEC |
| 2022-09-20 | Deerfield Mgmt HIF, L.P. | Director | 11,111,108 | $3.15 | $35.0M | SEC | |
| 2022-09-19 | BEN-MAIMON CAROLE | CEO | 31,746 | $3.15 | $100,000 | +126.6% | SEC |
| 2021-07-02 | Hamilton Thomas Edward | Director | 56,710 | $8.75 | $496,212 | +42.5% | SEC |
| 2021-07-02 | Deerfield Mgmt IV, L.P. | Director | 685,710 | $8.75 | $6.0M | +54.5% | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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