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Larimar Therapeutics, Inc.

LRMR Net buying
CIK 0001374690 #3232 in the set updated 17 Sep 2026
Bought (120 mo)
$136.69M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$370.00K
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$370.00K
2 of 2 sales
Net
+$136.32M
+$136.32M against sales at will

By person

17 insiders · 42 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Flynn James E
Director
$133.50M (17)
—
+$133.50M
12,038,231
11.59%
$40.18M
—
Hamilton Thomas Edward
Director
$2.66M (5)
—
+$2.66M
874,231
0.8416%
$2.92M
—
Hughes Thomas E.
See Remarks
—
$370.00K (2)
−$370.00K
125,247
0.1206%
$418.05K
+81.4%
Celano Michael
Chief Financial Officer
$118.63K (2)
—
+$118.63K
215,785
0.2077%
$720.25K
—
BEN-MAIMON CAROLE
President and CEO
$118.52K (2)
—
+$118.52K
368,276
0.3545%
$1.23M
—
Heller Frances K
Director
$106.71K (3)
—
+$106.71K
47,961
0.0462%
$160.08K
+167.0%
KIM DENNIS D
Chief Medical Officer
$77.90K (3)
—
+$77.90K
21,443
0.0206%
$71.57K
+1,386%
THOMAS FRANK E
Director
$47.00K (2)
—
+$47.00K
7,000
0.0067%
$23.36K
—
SHERMAN JEFFREY W
Director
$25.00K (1)
—
+$25.00K
5,000
0.0048%
$16.69K
—
Shankar Gopi
Chief Development Officer
$18.66K (1)
—
+$18.66K
76,443
0.0736%
$255.15K
—
Truitt Joseph
Director
$10.26K (1)
—
+$10.26K
2,750
0.0026%
$9.18K
—
Clayton Russell
Chief Medical Officer
—
—
—
71,443
0.0688%
$238.46K
—
LAMATTINA JOHN L
Director
—
—
—
31,376
0.0302%
$104.73K
—
Daniel Thomas O
Director
—
—
—
19,452
0.0187%
$64.93K
—
PEREZ ROBERT J
Director
—
—
—
10,886
0.0105%
$36.34K
+68.4%
Atlas Venture Fund VII L P entity
10% owner
—
—
—
11
<0.0001%
$36.72
−100.0%
CHONDRIAL THERAPEUTICS HOLDINGS, LLC entity
10% owner
—
—
—
8
<0.0001%
$26.70
−100.0%

Individual transactions

37
Insider
Date
Role
Action
Shares
Price
Amount
Hamilton Thomas Edward
6 Jul 2026
Director
Buy
50,000
$3.34
$166.89K
SHERMAN JEFFREY W
27 Feb 2026
Director
Buy
5,000
$5.00
$25.00K
THOMAS FRANK E
27 Feb 2026
Director
Buy
5,000
$5.00
$25.00K
Hamilton Thomas Edward
27 Feb 2026
Director
Buy
100,000
$5.00
$500.00K
Flynn James E
27 Feb 2026
Director
Buy indirect
2,000,000
$5.00
$10.00M
Flynn James E
27 Feb 2026
Director
Buy indirect
831,978
$5.00
$4.16M
Flynn James E
27 Feb 2026
Director
Buy indirect
1,084,012
$5.00
$5.42M
Flynn James E
27 Feb 2026
Director
Buy indirect
1,084,010
$5.00
$5.42M
Flynn James E
31 Jul 2025
Director
Buy indirect
2,599,932
$3.20
$8.32M
Flynn James E
31 Jul 2025
Director
Buy indirect
3,387,539
$3.20
$10.84M
Flynn James E
31 Jul 2025
Director
Buy indirect
3,387,529
$3.20
$10.84M
Flynn James E
16 Feb 2024
Director
Buy indirect
1,430,205
$8.74
$12.50M
Flynn James E
16 Feb 2024
Director
Buy indirect
1,430,206
$8.74
$12.50M
Flynn James E
16 Feb 2024
Director
Buy indirect
1,430,206
$8.74
$12.50M
Hamilton Thomas Edward
16 Feb 2024
Director
Buy
57,208
$8.74
$500.00K
THOMAS FRANK E
14 Feb 2024
Director
Buy
2,000
$11.00
$22.00K
Shankar Gopi
7 Dec 2023
Chief Development Officer
Buy
5,000
$3.73
$18.66K
Truitt Joseph
17 May 2023
Director
Buy
2,750
$3.73
$10.26K
BEN-MAIMON CAROLE
17 May 2023
President and CEO
Buy
5,000
$3.71
$18.53K
Celano Michael
17 May 2023
Chief Financial Officer
Buy
5,000
$3.73
$18.63K
BEN-MAIMON CAROLE
16 Sep 2022
President and CEO
Buy
31,746
$3.15
$100.00K
Celano Michael
16 Sep 2022
Chief Financial Officer
Buy
31,746
$3.15
$100.00K
Hamilton Thomas Edward
16 Sep 2022
Director
Buy
317,460
$3.15
$1,000.00K
Flynn James E
16 Sep 2022
Director
Buy indirect
2,777,777
$3.15
$8.75M
Flynn James E
16 Sep 2022
Director
Buy indirect
2,777,777
$3.15
$8.75M
Flynn James E
16 Sep 2022
Director
Buy indirect
2,777,777
$3.15
$8.75M
Flynn James E
16 Sep 2022
Director
Buy indirect
2,777,777
$3.15
$8.75M
Hamilton Thomas Edward
30 Jun 2021
Director
Buy
56,710
$8.75
$496.21K
Flynn James E
30 Jun 2021
Director
Buy indirect
228,570
$8.75
$2.00M
Flynn James E
30 Jun 2021
Director
Buy indirect
228,571
$8.75
$2.00M
Flynn James E
30 Jun 2021
Director
Buy indirect
228,569
$8.75
$2.00M
Heller Frances K
13 Oct 2017
Director
Buy
10,000
$3.90
$38.99K
KIM DENNIS D
11 Jul 2017
Chief Medical Officer
Buy
10,000
$3.39
$33.90K
KIM DENNIS D
11 May 2017
Chief Medical Officer
Buy
9,800
$4.40
$43.12K
KIM DENNIS D
10 May 2017
Chief Medical Officer
Buy
200
$4.40
$880.00
Heller Frances K
19 Dec 2016
Director
Buy
10,000
$3.23
$32.29K
Heller Frances K
15 Nov 2016
Director
Buy
10,000
$3.54
$35.43K
Show all 42 transactions →

What was left out

Form 4 filings counted 154
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 13
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 2
Transactions with no price 0
Shares from compensation/vesting 8,702,657
Sales filed before the plan box existed 2
History held since 31 Aug 2016