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United States Biotechnology & Medical Research

Larimar Therapeutics Inc (LRMR)

Track

The most recent insider trading activity occurred on February 27, 2026, with multiple significant buy transactions totaling over $25 million. James E. Flynn was the primary buyer, acquiring a substantial number of shares. Other insiders also made smaller purchases on the same date, indicating a notable period of insider buying.
Stock chart
Ticker: LRMR Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Flynn James E
4 purchases — total 25,000,000 USD
Buy 27 Feb 2026
Value US$3,557,637.12 | Price 269.91 | Shares 58,659
Buy 27 Feb 2026
Value US$848,473.83 | Price 227.16 | Shares 34,297
Buy 27 Feb 2026
Value US$5,420,060.00 | Price 5.00 | Shares 1,084,012
Buy 27 Feb 2026
Value US$5,420,050.00 | Price 5.00 | Shares 1,084,010
Buy 27 Feb 2026
Value US$3,609,764.65 | Price 188.50 | Shares 23,957
Buy 27 Feb 2026
Value US$25,000.00 | Price 5.00 | Shares 5,000
Buy 27 Feb 2026
Value US$500,000.00 | Price 5.00 | Shares 100,000
Buy 31 Jul 2025
Value US$8,319,782.40 | Price 3.20 | Shares 2,599,932
Buy 31 Jul 2025
Value US$10,840,124.80 | Price 3.20 | Shares 3,387,539
Buy 31 Jul 2025
Value US$10,840,092.80 | Price 3.20 | Shares 3,387,529
Buy 16 Feb 2024
Value US$499,997.92 | Price 8.74 | Shares 57,208
Buy 16 Feb 2024
Value US$12,499,991.70 | Price 8.74 | Shares 1,430,205
Buy 16 Feb 2024
Value US$12,500,000.44 | Price 8.74 | Shares 1,430,206
Buy 16 Feb 2024
Value US$12,500,000.44 | Price 8.74 | Shares 1,430,206
Buy 14 Feb 2024
Value US$22,000.00 | Price 11.00 | Shares 2,000
Buy 7 Dec 2023
Value US$18,661.50 | Price 3.73 | Shares 5,000
Proposed sale 24 Jul 2023
Value US$26,809.00 | Price 3.23 | Shares 8,300
Buy 17 May 2023
Value US$18,525.00 | Price 3.71 | Shares 5,000
Buy 17 May 2023
Value US$10,257.50 | Price 3.73 | Shares 2,750
Buy 17 May 2023
Value US$18,631.50 | Price 3.73 | Shares 5,000
Buy 16 Sep 2022
Value US$8,749,997.55 | Price 3.15 | Shares 2,777,777
Buy 16 Sep 2022
Value US$8,749,997.55 | Price 3.15 | Shares 2,777,777
Buy 16 Sep 2022
Value US$8,749,997.55 | Price 3.15 | Shares 2,777,777
Buy 16 Sep 2022
Value US$8,749,997.55 | Price 3.15 | Shares 2,777,777
Buy 16 Sep 2022
Value US$999,999.00 | Price 3.15 | Shares 317,460
Buy 16 Sep 2022
Value US$99,999.90 | Price 3.15 | Shares 31,746
Buy 16 Sep 2022
Value US$99,999.90 | Price 3.15 | Shares 31,746
Planned sale 28 Jun 2018
Value US$320,000.00 | Price 10.00 | Shares 32,000
Planned sale 7 Mar 2018
Value US$50,000.00 | Price 10.00 | Shares 5,000
Buy 13 Oct 2017
Value US$38,988.00 | Price 3.90 | Shares 10,000
Buy 11 Jul 2017
Value US$33,900.00 | Price 3.39 | Shares 10,000
Planned buy 11 May 2017
Value US$43,120.00 | Price 4.40 | Shares 9,800
Planned buy 10 May 2017
Value US$880.00 | Price 4.40 | Shares 200
Buy 19 Dec 2016
Value US$32,290.00 | Price 3.23 | Shares 10,000
Buy 15 Nov 2016
Value US$35,434.00 | Price 3.54 | Shares 10,000
Buy 29 Aug 2016
Value US$29,987.00 | Price 3.00 | Shares 10,000
Planned buy 26 Jul 2016
Value US$25,830.00 | Price 3.15 | Shares 8,200
Buy 25 Jul 2016
Value US$24,031.80 | Price 3.08 | Shares 7,800
Planned buy 22 Jul 2016
Value US$15,104.00 | Price 3.02 | Shares 5,000
Buy 22 Jul 2016
Value US$29,900.00 | Price 2.99 | Shares 10,000
Sale 20 Jul 2016
Value US$2,985,355.87 | Price 3.31 | Shares 901,430
Sale 20 Jul 2016
Value US$816,156.68 | Price 3.31 | Shares 246,439
Sale 20 Jul 2016
Value US$641,263.83 | Price 3.31 | Shares 193,630
Buy 12 Feb 2016
Value US$86,652.84 | Price 6.25 | Shares 13,872
Buy 12 Feb 2016
Value US$177,259.77 | Price 6.25 | Shares 28,377
Buy 12 Feb 2016
Value US$139,274.19 | Price 6.25 | Shares 22,296
Buy 11 Feb 2016
Value US$3,118.95 | Price 6.19 | Shares 504
Buy 11 Feb 2016
Value US$6,374.05 | Price 6.19 | Shares 1,030
Buy 11 Feb 2016
Value US$5,012.60 | Price 6.19 | Shares 810
Buy 10 Feb 2016
Value US$202,555.98 | Price 6.23 | Shares 32,501
Buy 10 Feb 2016
Value US$414,360.70 | Price 6.23 | Shares 66,486
Buy 10 Feb 2016
Value US$325,569.12 | Price 6.23 | Shares 52,239
Buy 9 Feb 2016
Value US$140,271.28 | Price 5.73 | Shares 24,484
Buy 9 Feb 2016
Value US$286,947.70 | Price 5.73 | Shares 50,086
Buy 9 Feb 2016
Value US$225,457.27 | Price 5.73 | Shares 39,353
Sale 24 Sep 2015
Value US$2,717,883.00 | Price 44.10 | Shares 61,630
Sale 24 Sep 2015
Value US$3,277,519.77 | Price 43.73 | Shares 74,949
Planned sale 18 Sep 2015
Value US$1,040,670.00 | Price 45.00 | Shares 23,126
Planned sale 17 Sep 2015
Value US$900,000.00 | Price 40.00 | Shares 22,500
Planned sale 17 Sep 2015
Value US$51,558.80 | Price 41.05 | Shares 1,256
Planned sale 17 Sep 2015
Value US$1,026,250.00 | Price 41.05 | Shares 25,000
Sale 17 Sep 2015
Value US$365,680.00 | Price 40.00 | Shares 9,142
Sale 15 Sep 2015
Value US$1,210,600.00 | Price 40.00 | Shares 30,265
Sale 14 Sep 2015
Value US$23,720.00 | Price 40.00 | Shares 593
Buy 19 Jun 2014
Value US$80,000.00 | Price 20.00 | Shares 4,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-02 2026-02-27 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
58,659 +6.6%
269.91
US$3,557,637 		58,659 +6.6% 269.91 US$3,557,637
2026-03-02 2026-02-27 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
34,297 +37.6%
227.16
US$848,474 		34,297 +37.6% 227.16 US$848,474
2026-03-02 2026-02-27 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
38,474 -45.9%
398.42
US$1,045,533 		38,474 -45.9% 398.42 US$1,045,533
2026-03-02 2026-02-27 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
1,084,010 +11.4%
5.00
US$5,420,050 		1,084,010 +11.4% 5.00 US$5,420,050
2026-03-02 2026-02-27 B Purchase
1.4
THOMAS FRANK E
Non-Executive Director
5,000 +250.0%
5.00
US$25,000 		5,000 +250.0% 5.00 US$25,000
2026-03-02 2026-02-27 B Purchase
3.0
SHERMAN JEFFREY W
Non-Executive Director
5,000 +inf%
5.00
US$25,000 		5,000 +inf% 5.00 US$25,000
2026-03-02 2026-02-27 B Purchase
3.5
Hamilton Thomas Edward
Non-Executive Director
100,000 +17.7%
5.00
US$500,000 		100,000 +17.7% 5.00 US$500,000
2025-08-04 2025-07-31 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
2,599,932 +55.1%
3.20
US$8,319,782 		2,599,932 +55.1% 3.20 US$8,319,782
2025-08-04 2025-07-31 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
3,387,539 +55.1%
3.20
US$10,840,125 		3,387,539 +55.1% 3.20 US$10,840,125
2025-08-04 2025-07-31 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
3,387,529 +55.1%
3.20
US$10,840,093 		3,387,529 +55.1% 3.20 US$10,840,093
2024-05-31 2024-02-16 B Purchase
3.5
Hamilton Thomas Edward
Non-Executive Director
57,208 +11.3%
8.74
US$499,998 		57,208 +11.3% 8.74 US$499,998
2024-02-16 2024-02-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
1,430,205 +51.5%
8.74
US$12,499,992 		1,430,205 +51.5% 8.74 US$12,499,992
2024-02-16 2024-02-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
1,430,206 +30.3%
8.74
US$12,500,000 		1,430,206 +30.3% 8.74 US$12,500,000
2024-02-16 2024-02-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
1,430,206 +30.3%
8.74
US$12,500,000 		1,430,206 +30.3% 8.74 US$12,500,000
2024-02-15 2024-02-14 B Purchase
1.4
THOMAS FRANK E
Non-Executive Director
2,000 +inf%
11.00
US$22,000 		2,000 +inf% 11.00 US$22,000
2023-12-08 2023-12-07 B Purchase
3.4
Shankar Gopi

Chief Development Officer

Officer
5,000 +inf%
3.73
US$18,662 		5,000 +inf% 3.73 US$18,662
2023-07-24 2023-07-24 PrS Proposed sale
2.2
Barrett Peter

Officer

Officer
8,300
3.23
US$26,809 		8,300 3.23 US$26,809
2023-05-18 2023-05-17 B Purchase
3.5
BEN-MAIMON CAROLE

President and CEO

Executive Director
5,000 +1.9%
3.71
US$18,525 		5,000 +1.9% 3.71 US$18,525
2023-05-18 2023-05-17 B Purchase
2.2
Truitt Joseph
Non-Executive Director
2,750 +inf%
3.73
US$10,258 		2,750 +inf% 3.73 US$10,258
2023-05-18 2023-05-17 B Purchase
3.6
Celano Michael

Chief Financial Officer

Officer
5,000 +4.6%
3.73
US$18,632 		5,000 +4.6% 3.73 US$18,632
2022-09-20 2022-09-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
2,777,777 +inf%
3.15
US$8,749,998 		2,777,777 +inf% 3.15 US$8,749,998
2022-09-20 2022-09-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
2,777,777 +142.9%
3.15
US$8,749,998 		2,777,777 +142.9% 3.15 US$8,749,998
2022-09-20 2022-09-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
2,777,777 +142.9%
3.15
US$8,749,998 		2,777,777 +142.9% 3.15 US$8,749,998
2022-09-20 2022-09-16 B Purchase
2.8
Flynn James E
Non-Executive Director Large shareholder
2,777,777 +142.9%
3.15
US$8,749,998 		2,777,777 +142.9% 3.15 US$8,749,998
2022-09-20 2022-09-16 B Purchase
3.5
Hamilton Thomas Edward
Non-Executive Director
317,460 +167.0%
3.15
US$999,999 		317,460 +167.0% 3.15 US$999,999
2022-09-19 2022-09-16 B Purchase
3.5
BEN-MAIMON CAROLE

President and CEO

Executive Director
31,746 +126.6%
3.15
US$100,000 		31,746 +126.6% 3.15 US$100,000
2022-09-19 2022-09-16 B Purchase
3.6
Celano Michael

Chief Financial Officer

Officer
31,746 +inf%
3.15
US$100,000 		31,746 +inf% 3.15 US$100,000
2018-06-29 2018-06-28 PlS Planned sale Hughes Thomas E.

See Remarks

Executive Director
32,000 -20.4%
10.00
US$320,000 		32,000 -20.4% 10.00 US$320,000
2018-03-09 2018-03-07 PlS Planned sale
3.1
Hughes Thomas E.

See Remarks

Executive Director
5,000 -3.1%
10.00
US$50,000 		5,000 -3.1% 10.00 US$50,000
2017-10-17 2017-10-13 B Purchase
3.8
Heller Frances K
10,000 +26.3%
3.90
US$38,988 		10,000 +26.3% 3.90 US$38,988
2017-07-12 2017-07-11 B Purchase KIM DENNIS D

Chief Medical Officer

Officer
10,000 +87.4%
3.39
US$33,900 		10,000 +87.4% 3.39 US$33,900
2017-05-11 2017-05-11 PP Planned purchase KIM DENNIS D

Chief Medical Officer

Officer
9,800 +596.5%
4.40
US$43,120 		9,800 +596.5% 4.40 US$43,120
2017-05-11 2017-05-10 PP Planned purchase KIM DENNIS D

Chief Medical Officer

Officer
200 +13.9%
4.40
US$880 		200 +13.9% 4.40 US$880
2016-12-20 2016-12-19 B Purchase
3.8
Heller Frances K
Non-Executive Director
10,000 +50.0%
3.23
US$32,290 		10,000 +50.0% 3.23 US$32,290
2016-11-17 2016-11-15 B Purchase
3.8
Heller Frances K
Non-Executive Director
10,000 +100.0%
3.54
US$35,434 		10,000 +100.0% 3.54 US$35,434
2016-08-31 2016-08-29 B Purchase
3.1
Hughes Thomas E.

President and CEO

Executive Director
10,000 +18.5%
3.00
US$29,987 		10,000 +18.5% 3.00 US$29,987
2016-07-26 2016-07-26 PP Planned purchase
Allen Patricia L

Chief Financial Officer

Officer
8,200 +70.7%
3.15
US$25,830 		8,200 +70.7% 3.15 US$25,830
2016-07-26 2016-07-25 B Purchase Allen Patricia L

Chief Financial Officer

Officer
7,800 +205.6%
3.08
US$24,032 		7,800 +205.6% 3.08 US$24,032
2016-07-26 2016-07-22 PP Planned purchase
3.1
Hughes Thomas E.

President and CEO

Executive Director
5,000 +10.2%
3.02
US$15,104 		5,000 +10.2% 3.02 US$15,104
2016-07-26 2016-07-22 B Purchase
3.8
Heller Frances K
Non-Executive Director
10,000 +inf%
2.99
US$29,900 		10,000 +inf% 2.99 US$29,900
2016-08-01 2016-07-20 S Sale Flynn James E Large shareholder
901,430 -43.9%
3.31
US$2,985,356 		901,430 -43.9% 3.31 US$2,985,356
2016-08-01 2016-07-20 S Sale Flynn James E Large shareholder
246,439 -43.9%
3.31
US$816,157 		246,439 -43.9% 3.31 US$816,157
2016-08-01 2016-07-20 S Sale Flynn James E Large shareholder
193,630 -43.9%
3.31
US$641,264 		193,630 -43.9% 3.31 US$641,264
2016-02-17 2016-02-12 B Purchase Flynn James E Large shareholder
13,872 +0.7%
6.25
US$86,653 		13,872 +0.7% 6.25 US$86,653
2016-02-17 2016-02-12 B Purchase Flynn James E Large shareholder
28,377 +5.3%
6.25
US$177,260 		28,377 +5.3% 6.25 US$177,260
2016-02-17 2016-02-12 B Purchase Flynn James E Large shareholder
22,296 +5.3%
6.25
US$139,274 		22,296 +5.3% 6.25 US$139,274
2016-02-11 2016-02-11 B Purchase Flynn James E Large shareholder
504 +0.0%
6.19
US$3,119 		504 +0.0% 6.19 US$3,119
2016-02-11 2016-02-11 B Purchase Flynn James E Large shareholder
1,030 +0.2%
6.19
US$6,374 		1,030 +0.2% 6.19 US$6,374
2016-02-11 2016-02-11 B Purchase Flynn James E Large shareholder
810 +0.2%
6.19
US$5,013 		810 +0.2% 6.19 US$5,013
2016-02-11 2016-02-10 B Purchase Flynn James E Large shareholder
32,501 +1.6%
6.23
US$202,556 		32,501 +1.6% 6.23 US$202,556
2016-02-11 2016-02-10 B Purchase Flynn James E Large shareholder
66,486 +14.3%
6.23
US$414,361 		66,486 +14.3% 6.23 US$414,361
2016-02-11 2016-02-10 B Purchase Flynn James E Large shareholder
52,239 +14.3%
6.23
US$325,569 		52,239 +14.3% 6.23 US$325,569
2016-02-11 2016-02-09 B Purchase Flynn James E Large shareholder
24,484 +1.2%
5.73
US$140,271 		24,484 +1.2% 5.73 US$140,271
2016-02-11 2016-02-09 B Purchase Flynn James E Large shareholder
50,086 +12.1%
5.73
US$286,948 		50,086 +12.1% 5.73 US$286,948
2016-02-11 2016-02-09 B Purchase Flynn James E Large shareholder
39,353 +12.1%
5.73
US$225,457 		39,353 +12.1% 5.73 US$225,457
2015-09-25 2015-09-24 S Sale
3.4
STARR KEVIN P
Non-Executive Director
61,630 -22.7%
44.10
US$2,717,883 		61,630 -22.7% 44.10 US$2,717,883
2015-09-25 2015-09-24 S Sale
3.4
STARR KEVIN P
Non-Executive Director
74,949 -21.6%
43.73
US$3,277,520 		74,949 -21.6% 43.73 US$3,277,520
2015-09-21 2015-09-18 PlS Planned sale
3.1
Hughes Thomas E.

Chief Executive Officer

Executive Director
23,126 -96.6%
45.00
US$1,040,670 		23,126 -96.6% 45.00 US$1,040,670
2015-09-21 2015-09-17 PlS Planned sale
3.1
Hughes Thomas E.

Chief Executive Officer

Executive Director
22,500 -96.5%
40.00
US$900,000 		22,500 -96.5% 40.00 US$900,000
2015-09-21 2015-09-17 PlS Planned sale
0.8
Secor Alicia

Chief Commercial Officer

Officer
1,256 -100.0%
41.05
US$51,559 		1,256 -100.0% 41.05 US$51,559
2015-09-21 2015-09-17 PlS Planned sale
0.8
Secor Alicia

Chief Commercial Officer

Officer
25,000 -95.2%
41.05
US$1,026,250 		25,000 -95.2% 41.05 US$1,026,250
2015-09-17 2015-09-17 S Sale
3.7
KIM DENNIS D

Chief Medical Officer

Officer
9,142 -100.0%
40.00
US$365,680 		9,142 -100.0% 40.00 US$365,680
2015-09-17 2015-09-15 S Sale
3.7
KIM DENNIS D

Chief Medical Officer

Officer
30,265 -100.0%
40.00
US$1,210,600 		30,265 -100.0% 40.00 US$1,210,600
2015-09-16 2015-09-14 S Sale
3.7
KIM DENNIS D

Chief Medical Officer

Officer
593 -100.0%
40.00
US$23,720 		593 -100.0% 40.00 US$23,720
2014-06-23 2014-06-19 B Purchase
0.8
Secor Alicia

Chief Commercial Officer

Officer
4,000 +inf%
20.00
US$80,000 		4,000 +inf% 20.00 US$80,000
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