Larimar Therapeutics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:LRMR Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Role	Shares	Max Price
31 Jul 25	BuyUS$30,000,000	Deerfield Management Company, L.P.	Company		9,375,000	US$3.20

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of LRMR?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	869,606	1.02%
VC/PE Firms	10,973,391	12.8%
General Public	12,876,637	15%
Institutions	30,263,784	35.4%
Hedge Funds	30,606,974	35.8%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 34.1%.

Top Shareholders

Top 25 shareholders own 79.19% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
35.8%	Deerfield Management Company, L.P.	30,606,974	US$122.7m	44.2%	2.32%
7.06%	RA Capital Management, L.P.	6,045,351	US$24.2m	0%	0.31%
5.76%	CHI Advisors LLC	4,928,040	US$19.8m	3.14%	12.46%
4.8%	Opaleye Management Inc.	4,110,000	US$16.5m	115%	2.89%
4.27%	Millennium Management LLC	3,655,189	US$14.7m	443%	0.01%
3.55%	BlackRock, Inc.	3,039,980	US$12.2m	-2.69%	no data
2.5%	The Vanguard Group, Inc.	2,142,031	US$8.6m	-3.42%	no data
2.43%	Alyeska Investment Group, L.P.	2,075,882	US$8.3m	43.9%	0.03%
1.56%	Citadel Advisors LLC	1,336,255	US$5.4m	208%	0.01%
1.34%	Two Sigma Advisers, LP	1,146,924	US$4.6m	191%	0.01%
1.06%	Geode Capital Management, LLC	904,425	US$3.6m	-0.39%	no data
1.06%	Two Sigma Investments, LP	903,611	US$3.6m	129%	0.01%
1%	State Street Global Advisors, Inc.	858,968	US$3.4m	3.17%	no data
0.9%	Mangrove Partners IM, LLC	770,233	US$3.1m	0%	0.34%
0.81%	Caption Management, LLC	689,290	US$2.8m	0%	0.25%
0.73%	Woodline Partners LP	622,682	US$2.5m	0%	0.01%
0.69%	Thomas Hamilton	590,811	US$2.4m	4.61%	no data
0.66%	Verition Fund Management LLC	567,683	US$2.3m	0%	0.01%
0.66%	Renaissance Technologies LLC	561,742	US$2.3m	-42.4%	no data
0.63%	Driehaus Capital Management LLC	535,464	US$2.1m	50.4%	0.01%
0.47%	Morgan Stanley, Investment Banking and Brokerage Investments	405,879	US$1.6m	0%	no data
0.43%	Dafna Capital Management, LLC	371,434	US$1.5m	0%	0.41%
0.4%	Northern Trust Global Investments	343,981	US$1.4m	-5.93%	no data
0.36%	UBS O'Connor LLC	307,198	US$1.2m	70.6%	0.11%
0.3%	Assenagon Asset Management S.A.	256,861	US$1.0m	17.6%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/08/17 00:53
End of Day Share Price	2025/08/15 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Larimar Therapeutics, Inc. is covered by 15 analysts. 10 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Christopher Chen	Baird
null null	Baird
Joel Beatty	Baird