LRMR
insider transactionsLarimar Therapeutics, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 3 different insiders made open-market purchases in the last 365 days, totalling $550.0K.
Net shares · 365d
+110.0K
110.0K buy · 0 sell
Net value · 365d
$550.0K
$550.0K in · $0 out
Sentiment · 365d
Net buying
100% buying · 0% selling
Open-market trades · 365d
3
110.0K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
55.1K sh
Own New
-
Grant·A
Director
$0
55.1K sh
Own New
-
Grant·A
Director
$0
55.1K sh
Own New
-
Grant·A
Director
$0
55.1K sh
Own New
-
Grant·A
Director
$0
55.1K sh
Own New
-
Buy·P
Director
$25.0K
5.0K sh · $5.00
Own +250%
-
Buy·P
Director
$25.0K
5.0K sh · $5.00
Own New
-
Buy·P
Director
$500.0K
100.0K sh · $5.00
Own +18%
-
Grant·A
Chief Development Officer
$0
153.8K sh
Own New
-
Grant·A
Chief Development Officer
$0
25.6K sh
Own +50%
-
Grant·A
Chief Medical Officer
$0
153.8K sh
Own New
-
Grant·A
Chief Medical Officer
$0
25.6K sh
Own +56%
-
Grant·A
Michael Celano KEY
Chief Financial Officer
$0
225.6K sh
Own New
-
Grant·A
Michael Celano KEY
Chief Financial Officer
$0
37.6K sh
Own +21%
-
Grant·A
President and CEO
$0
600.6K sh
Own New
-
Grant·A
President and CEO
$0
100.1K sh
Own +37%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 19, 2026 | Jeffrey W Sherman | Grant A | 55.1K | $0 |
| May 19, 2026 | Joseph Truitt | Grant A | 55.1K | $0 |
| May 19, 2026 | Frank E Thomas | Grant A | 55.1K | $0 |
| May 19, 2026 | Jonathan S Leff | Grant A | 55.1K | $0 |
| May 19, 2026 | Thomas Edward Hamilton | Grant A | 55.1K | $0 |
| Feb 27, 2026 | Frank E Thomas | Buy P | 5.0K | $25.0K |
| Feb 27, 2026 | Jeffrey W Sherman | Buy P | 5.0K | $25.0K |
| Feb 27, 2026 | Thomas Edward Hamilton | Buy P | 100.0K | $500.0K |
| Jan 26, 2026 | Gopi Shankar | Grant A | 153.8K | $0 |
| Jan 26, 2026 | Gopi Shankar | Grant A | 25.6K | $0 |
| Jan 26, 2026 | Russell Clayton | Grant A | 153.8K | $0 |
| Jan 26, 2026 | Russell Clayton | Grant A | 25.6K | $0 |
| Jan 26, 2026 | Michael Celano KEY | Grant A | 225.6K | $0 |
| Jan 26, 2026 | Michael Celano KEY | Grant A | 37.6K | $0 |
| Jan 26, 2026 | Carole Ben-Maimon KEY | Grant A | 600.6K | $0 |
| Jan 26, 2026 | Carole Ben-Maimon KEY | Grant A | 100.1K | $0 |
About LRMR insider trading
This page tracks insider transactions for Larimar Therapeutics, Inc. (LRMR) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.