Larimar Therapeutics LRMR Insider Ownership

NASDAQ LRMR
$3.83 +0.00 (+0.00%)
At close: Sep 4, 2026 · 4:00 PM EDT

Insider Holdings by Owner

37.06Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
45.46%
0% pp QoQ
Shares Held by Insiders
35.61Mn
filed for Sep 2026
0.00% QoQ
Shares Outstanding
78.32Mn
78,324,767 shares
Direct Holdings
0
Indirect: 35.61Mn
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
8
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of September 05, 2026, the three largest insider holders of LRMR are James E Flynn (Director, 35.61Mn shares), James E Flynn (Director, 35.61Mn shares), James E Flynn (Director, 35.61Mn shares).

Form 4 Holdings

Insiders Holding LRMR

Insiders 8
Shares held 37.06Mn
Of outstanding 47.32%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 James E Flynn Director, TenPercentOwner, Other 0 35,606,974 35,606,974 96.1% 02 Mar, 2026
2 Thomas Edward Hamilton Director 714,798 0 714,798 1.9% 08 Jul, 2026
3 Carole Ben-Maimon President And Ceo 368,276 0 368,276 1.0% 27 Jan, 2026
4 Michael Celano Chief Financial Officer 215,785 0 215,785 0.6% 27 Jan, 2026
5 Gopi Shankar Chief Development Officer 76,443 0 76,443 0.2% 27 Jan, 2026
6 Russell Clayton Chief Medical Officer 71,443 0 71,443 0.2% 27 Jan, 2026
7 Frank E Thomas Director 7,000 0 7,000 0.0% 02 Mar, 2026
8 Joseph Truitt Director 2,750 0 2,750 0.0% 18 May, 2023

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

872 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
06 Jul, 2026 Thomas Edward Hamilton Director Acquired P 50,000 $3.34 $166.89K 714,798 Direct
19 May, 2026 Thomas Edward Hamilton Director Acquired A 55,150 $0.00 $0 55,150 Direct
19 May, 2026 James E Flynn Director, TenPercentOwner, Other Acquired A 55,150 $0.00 $0 55,150 Indirect
19 May, 2026 Frank E Thomas Director Acquired A 55,150 $0.00 $0 55,150 Direct
19 May, 2026 James E Flynn Director, TenPercentOwner, Other Acquired A 55,150 $0.00 $0 55,150 Indirect
19 May, 2026 Jonathan S Leff Director Acquired A 55,150 $0.00 $0 55,150 Direct
19 May, 2026 James E Flynn Director, TenPercentOwner, Other Acquired A 55,150 $0.00 $0 55,150 Indirect
19 May, 2026 James E Flynn Director, TenPercentOwner, Other Acquired A 55,150 $0.00 $0 55,150 Indirect
19 May, 2026 Jeffrey W Sherman Director Acquired A 55,150 $0.00 $0 55,150 Direct
19 May, 2026 Joseph Truitt Director Acquired A 55,150 $0.00 $0 55,150 Direct
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 Frank E Thomas Director Acquired P 5,000 $5.00 $25.00K 7,000 Direct
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 Thomas Edward Hamilton Director Acquired P 100,000 $5.00 $500.00K 664,798 Direct
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect
27 Feb, 2026 James E Flynn Director, TenPercentOwner, Other Acquired P 1,084,010 $5.00 $5.42Mn 10,622,928 Indirect