Larimar Therapeutics, Inc. (LRMR) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

78,216,393Shares Outstanding

35,397,412Shares held by institutions

$107,254,158Value of institutional holdings

92.50%Institutional ownership %

-1.02%Shares Changed QoQ

126No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 126 institutional investors hold a position in Larimar Therapeutics, Inc. (NASDAQ:LRMR).

The collective stake of institutional investors in Larimar Therapeutics moved to 92.5% in December 2025, a shift down from the 112.2% reported for September 2025.
Institutional share ownership changed by -1.02% QoQ, while the number of institutional owners saw an increase of 7.69% YoY.
The latest 13F cycle for Larimar Therapeutics reveals that of 126 total investors, 60 funds grew their exposure, whereas 42 reduced theirs and 24 made no changes.
Collectively, institutional investors decreased their stake in Larimar Therapeutics to 72.35Mn shares as of December 2025, a change that is down by 746.49K shares quarter on quarter and up 8.88Mn shares year over year.
DEERFIELD MANAGEMENT COMPANY, L.P.'s holding of 30.61Mn shares as of December 31, 2025 makes it the primary institutional investor in Larimar Therapeutics, owning 39.13% of the stock.
Among the most significant buyers of Larimar Therapeutics during December 2025 were AIGH Capital Management LLC (1.00Mn), Blue Owl Capital Holdings LP (970.65K), D. E. Shaw & Co., Inc. (437.40K), FEDERATED HERMES, INC. (356.51K), BlackRock, Inc. (342.41K).
Leading sellers of Larimar Therapeutics stock in December 2025 included Caption Management, LLC (2.44Mn), Alyeska Investment Group, L.P. (959.35K), Woodline Partners LP (822.00K), RENAISSANCE TECHNOLOGIES LLC (561.38K), J. Goldman & Co LP (298.22K).
The top 10 institutional holders of Larimar Therapeutics for the quarter ending December 2025 included DEERFIELD MANAGEMENT COMPANY, L.P. (30.61Mn), Blue Owl Capital Holdings LP (6.82Mn), MILLENNIUM MANAGEMENT LLC (5.21Mn), BlackRock, Inc. (3.68Mn), RTW INVESTMENTS, LP (3.12Mn), VANGUARD GROUP INC (3.05Mn), AIGH Capital Management LLC (2.00Mn), Point72 Asset Management, L.P. (1.46Mn), CITADEL ADVISORS LLC (1.37Mn), GOLDMAN SACHS GROUP INC (1.35Mn).

126 Institutional Holders

35,397,412 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
DEERFIELD MANAGEMENT COMPANY, L.P.	31 Dec, 2025	30,606,974	0	0.00%	$116,612,571.00
Blue Owl Capital Holdings LP	31 Dec, 2025	6,823,690	970,650	16.58%	$25,998,259.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	5,206,364	129,533	2.55%	$19,836,247.00
BlackRock, Inc.	31 Dec, 2025	3,681,603	342,411	10.25%	$14,026,908.00
RTW INVESTMENTS, LP	31 Dec, 2025	3,125,000	0	0.00%	$11,906,250.00
VANGUARD GROUP INC	31 Dec, 2025	3,046,216	-41,624	-1.35%	$11,606,083.00
AIGH Capital Management LLC	31 Dec, 2025	2,000,000	1,000,000	100.00%	$7,620,000.00
Point72 Asset Management, L.P.	31 Dec, 2025	1,461,028	237,162	19.38%	$5,566,517.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,366,750	-110,756	-7.50%	$5,207,317.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,347,215	-227,786	-14.46%	$5,132,889.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,093,323	70,796	6.92%	$4,166,238.00
DAFNA Capital Management LLC	31 Dec, 2025	939,164	-88,600	-8.62%	$3,578,215.00
Alyeska Investment Group, L.P.	31 Dec, 2025	927,821	-959,348	-50.84%	$3,534,998.00
STATE STREET CORP	31 Dec, 2025	911,925	20,056	2.25%	$3,474,434.00
Woodline Partners LP	31 Dec, 2025	800,850	-822,000	-50.65%	$3,051,239.00
JANE STREET GROUP, LLC	31 Dec, 2025	678,942	236,530	53.46%	$2,586,769.00
Verition Fund Management LLC	31 Dec, 2025	567,683	0	0.00%	$2,162,872.00
DRIEHAUS CAPITAL MANAGEMENT LLC	31 Dec, 2025	535,464	0	0.00%	$2,040,118.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	502,251	-60,152	-10.70%	$1,913,576.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	437,399	437,399	0.00%	$1,666,490.00

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