LRMR

Larimar Therapeutics, Inc.$3.79+0.07 (+1.88%)

Prev Close$3.72·MCap$353.4M·P/E—·Vol1.07M·Yield—

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Buys (12M)

$55.72M

▼

Sells (12M)

$0.00

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Net Activity

Net Buyer

$55.72M

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Active Insiders

last 12 mo

Over the past 12 months, insider activity at Larimar Therapeutics, Inc. (LRMR) has been exclusively buying, with 6 insider purchases totaling $55.72M and 0 insider sales totaling $0.00. The most recent insider transaction was by Hamilton Thomas Edward (director), who purchased $166.9K worth of shares on Jul 8, 2026. Larimar Therapeutics, Inc. operates in the Healthcare sector, within the Biotechnology industry, with a market cap of $353.4M.

LRMR Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jul 8, 2026	Hamilton Thomas Edward	director	Buy	50,000	$3.34	$166.9K	714,798
Mar 2, 2026	Flynn James E	director, 10 percent owner, other: * Director by Deputization	Buy	5,000,000	$5.00	$25.00M5.8% OS	10,622,957+89%
Mar 2, 2026	SHERMAN JEFFREY W	director	Buy	5,000	$5.00	$25.0K	5,000
Mar 2, 2026	THOMAS FRANK E	director	Buy	5,000	$5.00	$25.0K	7,000+250%
Mar 2, 2026	Hamilton Thomas Edward	director	Buy	100,000	$5.00	$500.0K	664,798
Jul 31, 2025	Flynn James E	Director	Buy	9,375,000	$3.20	$30.00M11.0% OS	0
May 31, 2024	Hamilton Thomas Edward	Director	Buy	57,208	$8.74	$500.0K	564,798
Feb 16, 2024	Flynn James E	Director	Buy	2,860,411	$8.74	$25.00M3.3% OS	6,151,389+87%
Feb 15, 2024	THOMAS FRANK E	Director	Buy	2,000	$11.00	$22.0K	2,000
Dec 8, 2023	Shankar Gopi	Chief Development Officer	Buy	5,000	$3.73	$18.7K	5,000
May 18, 2023	BEN-MAIMON CAROLE	President and CEO	Buy	5,000	$3.71	$18.5K	266,829
May 18, 2023	Celano Michael	Chief Financial Officer	Buy	5,000	$3.73	$18.6K	112,746
May 18, 2023	Truitt Joseph	Director	Buy	2,750	$3.73	$10.3K	2,750
Sep 20, 2022	Flynn James E	Director	Buy	2,777,777	$3.15	$8.75M3.2% OS	4,721,183+143%
Sep 20, 2022	Hamilton Thomas Edward	Director	Buy	317,460	$3.15	$1000.0K	507,590+167%
Sep 19, 2022	BEN-MAIMON CAROLE	President and CEO	Buy	31,746	$3.15	$100.0K	56,829+127%
Sep 19, 2022	Celano Michael	Chief Financial Officer	Buy	31,746	$3.15	$100.0K	31,746
Jul 2, 2021	Flynn James E	Director	Buy	685,710	$8.75	$6.00M0.8% OS	1,943,423+55%
Jul 2, 2021	Hamilton Thomas Edward	Director	Buy	56,710	$8.75	$496.2K	190,130+43%

LRMR Insider Buying Activity

The following table shows recent insider purchases of Larimar Therapeutics, Inc. (LRMR) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jul 8, 2026	Hamilton Thomas Edward	director	Buy	50,000	$3.34	$166.9K	714,798
Mar 2, 2026	Flynn James E	director, 10 percent owner, other: * Director by Deputization	Buy	5,000,000	$5.00	$25.00M5.8% OS	10,622,957+89%
Mar 2, 2026	SHERMAN JEFFREY W	director	Buy	5,000	$5.00	$25.0K	5,000
Mar 2, 2026	THOMAS FRANK E	director	Buy	5,000	$5.00	$25.0K	7,000+250%
Mar 2, 2026	Hamilton Thomas Edward	director	Buy	100,000	$5.00	$500.0K	664,798
Jul 31, 2025	Flynn James E	Director	Buy	9,375,000	$3.20	$30.00M11.0% OS	0
May 31, 2024	Hamilton Thomas Edward	Director	Buy	57,208	$8.74	$500.0K	564,798
Feb 16, 2024	Flynn James E	Director	Buy	2,860,411	$8.74	$25.00M3.3% OS	6,151,389+87%
Feb 15, 2024	THOMAS FRANK E	Director	Buy	2,000	$11.00	$22.0K	2,000
Dec 8, 2023	Shankar Gopi	Chief Development Officer	Buy	5,000	$3.73	$18.7K	5,000
May 18, 2023	BEN-MAIMON CAROLE	President and CEO	Buy	5,000	$3.71	$18.5K	266,829
May 18, 2023	Celano Michael	Chief Financial Officer	Buy	5,000	$3.73	$18.6K	112,746
May 18, 2023	Truitt Joseph	Director	Buy	2,750	$3.73	$10.3K	2,750
Sep 20, 2022	Flynn James E	Director	Buy	2,777,777	$3.15	$8.75M3.2% OS	4,721,183+143%
Sep 20, 2022	Hamilton Thomas Edward	Director	Buy	317,460	$3.15	$1000.0K	507,590+167%
Sep 19, 2022	BEN-MAIMON CAROLE	President and CEO	Buy	31,746	$3.15	$100.0K	56,829+127%
Sep 19, 2022	Celano Michael	Chief Financial Officer	Buy	31,746	$3.15	$100.0K	31,746
Jul 2, 2021	Flynn James E	Director	Buy	685,710	$8.75	$6.00M0.8% OS	1,943,423+55%
Jul 2, 2021	Hamilton Thomas Edward	Director	Buy	56,710	$8.75	$496.2K	190,130+43%