Larimar Therapeutics, Inc. (LRMR) has 20 known insider and institutional holders on record. The largest holder is Flynn James E with 6,207,982 shares. Other notable holders include DEERFIELD PARTNERS, L.P. and Hamilton Thomas Edward.
Over the last 12 months, insiders have made 15 transactions in LRMR stock — 15 buys (valued at $19.08M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
LRMR Insider Ownership
Top Holder
Flynn James E
6,207,982 shares
Buys (12 mo)
15
$19.08M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Flynn James E |
10 Percent Owner, Other: * Director By Deputization |
6,207,982 |
2026-03-02 |
|
| 2 |
Deerfield Partners, L.p. |
10 Percent Owner |
2,777,777 |
2022-09-20 |
|
| 3 |
Hamilton Thomas Edward |
Director |
664,798 |
2026-03-02 |
|
| 4 |
Hatfield Jeffrey S. |
Chief Executive Officer |
525,000 |
2019-01-24 |
|
| 5 |
Singhal Priya |
Head of Research & Development |
375,000 |
2019-04-04 |
|
| 6 |
Ben-maimon Carole |
President and CEO |
368,276 |
2026-01-27 |
|
| 7 |
Celano Michael |
Chief Financial Officer |
215,785 |
2026-01-27 |
|
| 8 |
Hughes Thomas E. |
See Remarks |
125,247 |
2018-06-29 |
|
| 9 |
Allen Patricia L |
Chief Financial Officer |
125,000 |
2019-01-24 |
|
| 10 |
Mcveigh Brian |
Chief Business Officer |
125,000 |
2019-01-24 |
|
| 11 |
Kim Dennis D |
Chief Medical Officer |
95,000 |
2019-01-24 |
|
| 12 |
Shankar Gopi |
Chief Development Officer |
76,443 |
2026-01-27 |
|
| 13 |
Clayton Russell |
Chief Medical Officer |
71,443 |
2026-01-27 |
|
| 14 |
Loustau Patrick |
President |
56,500 |
2016-04-04 |
|
| 15 |
Goldberg Avi Y. |
Director |
53,734 |
2015-09-21 |
|
| 16 |
Heller Frances K |
Director |
47,961 |
2017-10-17 |
|
| 17 |
Mcdonough Cameron Geoffrey |
Director |
27,000 |
2019-06-27 |
|
| 18 |
Lamattina John L |
Director |
27,000 |
2019-06-27 |
|
| 19 |
Everett Wendy |
Director |
27,000 |
2019-06-27 |
|
| 20 |
Perez Robert J |
Director |
27,000 |
2019-06-27 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-27 |
Hamilton Thomas Edward |
Director |
Informative Buy |
100,000 |
$5.00 |
$500K |
| 2026-02-27 |
Flynn James E |
10 Percent Owner, Other: * Director By Deputization |
Informative Buy |
2,000,000 |
$5.00 |
$10M |
| 2026-02-27 |
Thomas Frank E |
Director |
Informative Buy |
5,000 |
$5.00 |
$25K |
| 2026-02-27 |
Sherman Jeffrey W |
Director |
Informative Buy |
5,000 |
$5.00 |
$25K |
| 2026-01-26 |
Shankar Gopi |
Chief Development Officer |
RSU Award |
25,637 |
- |
- |
| 2026-01-26 |
Clayton Russell |
Chief Medical Officer |
RSU Award |
25,637 |
- |
- |
| 2026-01-26 |
Ben-maimon Carole |
President and CEO |
RSU Award |
100,100 |
- |
- |
| 2026-01-26 |
Celano Michael |
Chief Financial Officer |
RSU Award |
37,604 |
- |
- |
| 2025-07-31 |
Flynn James E |
10 Percent Owner, Other: * Director By Deputization |
Informative Buy |
2,599,932 |
$3.20 |
$8.32M |
| 2025-05-13 |
Flynn James E |
10 Percent Owner, Other: * Director By Deputization |
RSU Award |
19,000 |
$1.88 |
$35.63K |
| 2025-05-13 |
Hamilton Thomas Edward |
Director |
RSU Award |
19,000 |
$1.88 |
$35.63K |
| 2025-05-13 |
Truitt Joseph |
Director |
RSU Award |
19,000 |
$1.88 |
$35.63K |
| 2025-05-13 |
Thomas Frank E |
Director |
RSU Award |
19,000 |
$1.88 |
$35.63K |
| 2025-05-13 |
Sherman Jeffrey W |
Director |
RSU Award |
19,000 |
$1.88 |
$35.63K |
| 2025-05-13 |
Leff Jonathan S |
Director |
RSU Award |
19,000 |
$1.88 |
$35.63K |
