Larimar Therapeutics, Inc. (LRMR) Insider Trading

Over the last 6 months, 112 institutions increased and 84 reduced their position (13F).

Insider Activity

Sentiment
50/100
Buys (3m)
0
Sells (3m)
0
Net (3m)
$0
Insider trades by month Buys Sells
May
Dec
Feb
May
Aug
Mar
Context3-month price -41.3%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
May 20, 2026SHERMAN JEFFREY WdirectorGrant55,150$3.33
May 20, 2026Truitt JosephdirectorGrant55,150$3.33
May 20, 2026LEFF JONATHAN SdirectorGrant55,150$3.33
May 20, 2026THOMAS FRANK EdirectorGrant55,150$3.33
May 20, 2026Hamilton Thomas EdwarddirectorGrant55,150$3.33
May 20, 2026Flynn James Edirector, 10 percent owner, other: * Director by DeputizationGrant55,150$3.33
Mar 2, 2026Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy1,084,012$5.00
Mar 2, 2026SHERMAN JEFFREY WdirectorBuy5,000$5.00
Mar 2, 2026THOMAS FRANK EdirectorBuy5,000$5.00
Mar 2, 2026Hamilton Thomas EdwarddirectorBuy100,000$5.00
Mar 2, 2026Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy1,084,010$5.00
Mar 2, 2026Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy2,000,000$5.00
Mar 2, 2026Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy831,978$5.00
Jan 27, 2026BEN-MAIMON CAROLEdirector, officer: President and CEOGrant100,100—
Jan 27, 2026Shankar Gopiofficer: Chief Development OfficerGrant153,822$3.60
Jan 27, 2026BEN-MAIMON CAROLEdirector, officer: President and CEOGrant600,600$3.60
Jan 27, 2026Clayton Russellofficer: Chief Medical OfficerGrant25,637—
Jan 27, 2026Clayton Russellofficer: Chief Medical OfficerGrant153,822$3.60
Jan 27, 2026Shankar Gopiofficer: Chief Development OfficerGrant25,637—
Jan 27, 2026Celano Michaelofficer: Chief Financial OfficerGrant37,604—
Jan 27, 2026Celano Michaelofficer: Chief Financial OfficerGrant225,622$3.60
Aug 4, 2025Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy2,599,932$3.20
Aug 4, 2025Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy3,387,539$3.20
Aug 4, 2025Flynn James Edirector, 10 percent owner, other: * Director by DeputizationBuy3,387,529$3.20
May 15, 2025Flynn James Edirector, 10 percent owner, other: * Director by DeputizationGrant19,000$1.88
May 14, 2025LEFF JONATHAN SdirectorGrant19,000$1.88
May 14, 2025SHERMAN JEFFREY WdirectorGrant19,000$1.88
May 14, 2025Truitt JosephdirectorGrant19,000$1.88
May 14, 2025Hamilton Thomas EdwarddirectorGrant19,000$1.88
May 14, 2025THOMAS FRANK EdirectorGrant19,000$1.88

Source: LRMR SEC Form 4 filings, latest May 20, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their LRMR positions over the last 6 months (SEC Form 13F).

Increased
112
New positions
60
Reduced
84
Sold out
41
Largest moves
InstitutionActionSharesFiled
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)Increased35.6MMay 15, 2026
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)Unchanged30.6MFeb 17, 2026
BLUE OWL CAPITAL HOLDINGS LPIncreased7.1MMay 14, 2026
BLUE OWL CAPITAL HOLDINGS LPIncreased6.8MFeb 20, 2026
MILLENNIUM MANAGEMENT LLCIncreased5.2MFeb 17, 2026
BLACKROCK, INC.Increased3.8MMay 13, 2026
BLACKROCK, INC.Increased3.7MFeb 12, 2026
MILLENNIUM MANAGEMENT LLCReduced3.6MMay 15, 2026
RTW INVESTMENTS, LPUnchanged3.1MFeb 17, 2026
VANGUARD GROUP INCReduced3.0MJan 29, 2026
AIGH CAPITAL MANAGEMENT LLCIncreased3.0MApr 30, 2026
DRIEHAUS CAPITAL MANAGEMENT LLCIncreased2.9MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2.9MMay 15, 2026
DAFNA CAPITAL MANAGEMENT LLCIncreased2.0MMay 15, 2026
AIGH CAPITAL MANAGEMENT LLCIncreased2.0MFeb 2, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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