Larimar Therapeutics, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Deerfield Mgmt HIF, L.P. | — | Purchase | 2,599,932 | $3.20 | $8,319,782 | 7,321,129 | Jul 31, 2025 |
| Shankar Gopi | Chief Development Officer | Award / Grant | 23,306 | — | — | 50,806 | Jan 22, 2025 |
| Clayton Russell | Chief Medical Officer | Award / Grant | 23,306 | — | — | 45,806 | Jan 22, 2025 |
| BEN-MAIMON CAROLE | President and CEO | Award / Grant | 91,000 | — | — | 387,208 | Jan 22, 2025 |
| Celano Michael | Chief Financial Officer | Award / Grant | 34,185 | — | — | 178,181 | Jan 22, 2025 |
| Hamilton Thomas Edward | — | Purchase | 57,208 | $8.74 | $499,998 | 564,798 | Feb 16, 2024 |
| Deerfield Mgmt L.P. | — | Purchase | 1,430,205 | $8.74 | $12,499,992 | 4,207,982 | Feb 16, 2024 |
| THOMAS FRANK E | — | Purchase | 2,000 | $11.00 | $22,000 | 2,000 | Feb 14, 2024 |
| Shankar Gopi | Chief Development Officer | Award / Grant | 22,500 | — | — | 27,500 | Jan 17, 2024 |
| Celano Michael | Chief Financial Officer | Award / Grant | 31,250 | — | — | 143,996 | Jan 17, 2024 |
| Clayton Russell | Chief Medical Officer | Award / Grant | 22,500 | — | — | 22,500 | Jan 17, 2024 |
| BEN-MAIMON CAROLE | President and CEO | Award / Grant | 66,125 | — | — | 332,954 | Jan 17, 2024 |
| Shankar Gopi | Chief Development Officer | Purchase | 5,000 | $3.73 | $18,650 | 5,000 | Dec 7, 2023 |
| Celano Michael | Chief Financial Officer | Purchase | 5,000 | $3.73 | $18,650 | 112,746 | May 17, 2023 |
| BEN-MAIMON CAROLE | President and CEO | Purchase | 5,000 | $3.71 | $18,550 | 266,829 | May 17, 2023 |
| Truitt Joseph | — | Purchase | 2,750 | $3.73 | $10,258 | 2,750 | May 17, 2023 |
| Celano Michael | Chief Financial Officer | Award / Grant | 76,000 | — | — | 107,746 | Jan 31, 2023 |
| BEN-MAIMON CAROLE | President and CEO | Award / Grant | 205,000 | — | — | 261,829 | Jan 31, 2023 |
| Deerfield Mgmt HIF, L.P. | — | Purchase | 2,777,777 | $3.15 | $8,749,998 | 2,777,777 | Sep 16, 2022 |
| Hamilton Thomas Edward | — | Purchase | 317,460 | $3.15 | $999,999 | 507,590 | Sep 16, 2022 |
| Celano Michael | Chief Financial Officer | Purchase | 31,746 | $3.15 | $100,000 | 31,746 | Sep 16, 2022 |
| BEN-MAIMON CAROLE | President and CEO | Purchase | 31,746 | $3.15 | $100,000 | 56,829 | Sep 16, 2022 |
| Deerfield Mgmt IV, L.P. | — | Purchase | 228,571 | $8.75 | $1,999,996 | 1,943,423 | Jun 30, 2021 |
| Hamilton Thomas Edward | — | Purchase | 56,710 | $8.75 | $496,213 | 190,130 | Jun 30, 2021 |
| Hamilton Thomas Edward | — | Other | 133,420 | — | — | 133,420 | Jun 26, 2020 |
| CHONDRIAL THERAPEUTICS HOLDINGS, LLC | — | Other | 6,091,242 | — | — | 8 | Jun 26, 2020 |
| BEN-MAIMON CAROLE | President and CEO | Other | 25,083 | — | — | 25,083 | Jun 26, 2020 |
| LAMATTINA JOHN L | — | Award / Grant | 10,844 | $4.38 | $47,497 | 31,376 | Jan 24, 2019 |
| PEREZ ROBERT J | — | Award / Grant | 4,423 | $4.38 | $19,373 | 5,322 | Jan 24, 2019 |
| Atlas Venture Associates VII, L.P. | — | Other | 1,126,546 | — | — | 3,506,184 | Jun 29, 2018 |
| Hughes Thomas E. | See Remarks | Sale | 32,000 | $10.00 | $320,000 | 125,247 | Jun 28, 2018 |
| Hughes Thomas E. | See Remarks | Sale | 5,000 | $10.00 | $50,000 | 157,247 | Mar 7, 2018 |
| Daniel Thomas O | — | Award / Grant | 8,687 | $5.18 | $44,999 | 19,452 | Jan 3, 2018 |
| LAMATTINA JOHN L | — | Award / Grant | 9,169 | $5.18 | $47,495 | 20,532 | Jan 3, 2018 |
| Heller Frances K | — | Purchase | 10,000 | $3.90 | $39,000 | 47,961 | Oct 13, 2017 |
| KIM DENNIS D | Chief Medical Officer | Purchase | 10,000 | $3.39 | $33,900 | 21,443 | Jul 11, 2017 |
| Hughes Thomas E. | President and CEO | Option Exercise | 18,928 | $0.75 | $14,196 | 83,088 | May 11, 2017 |
| KIM DENNIS D | Chief Medical Officer | Purchase | 200 | $4.40 | $880 | 1,643 | May 11, 2017 |
| Daniel Thomas O | — | Award / Grant | 10,765 | $4.18 | $44,998 | 10,765 | Feb 13, 2017 |
| LAMATTINA JOHN L | — | Award / Grant | 11,363 | $4.18 | $47,497 | 11,363 | Feb 13, 2017 |
| Heller Frances K | — | Purchase | 10,000 | $3.23 | $32,300 | 30,000 | Dec 19, 2016 |
| Heller Frances K | — | Purchase | 10,000 | $3.54 | $35,400 | 20,000 | Nov 15, 2016 |
| Hughes Thomas E. | President and CEO | Purchase | 10,000 | $3.00 | $30,000 | 63,936 | Aug 29, 2016 |
| Allen Patricia L | Chief Financial Officer | Purchase | 8,200 | $3.15 | $25,830 | 19,793 | Jul 25, 2016 |
| Heller Frances K | — | Purchase | 10,000 | $2.99 | $29,900 | 10,000 | Jul 22, 2016 |
| Hughes Thomas E. | President and CEO | Purchase | 5,000 | $3.02 | $15,100 | 53,936 | Jul 22, 2016 |
| DEERFIELD MANAGEMENT CO | — | Sale | 246,439 | $3.31 | $815,713 | 314,889 | Jul 20, 2016 |
| McDonough Cameron Geoffrey | — | Disposition | 4,424 | $7.91 | $34,994 | — | Apr 1, 2016 |
| Deerfield International Master Fund, L.P. | — | Purchase | 13,872 | $6.25 | $86,700 | 2,053,232 | Feb 12, 2016 |
| Deerfield Mgmt L.P. | — | Purchase | 39,353 | $5.73 | $225,493 | 365,698 | Feb 11, 2016 |