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	Shares	Max Price
27 Feb 26	BuyUS$25,000,000	Deerfield Management Company, L.P.	Company	5,000,000	US$5.00
27 Feb 26	BuyUS$500,000	Thomas Hamilton	Individual	100,000	US$5.00
27 Feb 26	BuyUS$25,000	Frank Thomas	Individual	5,000	US$5.00
27 Feb 26	BuyUS$25,000	Jeffrey Sherman	Individual	5,000	US$5.00
31 Jul 25	BuyUS$30,000,000	Deerfield Management Company, L.P.	Company	9,375,000	US$3.20

Insider Trading Volume

Insider Buying: LRMR 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	1,251,560	1.2%
VC/PE Firms	6,823,690	6.57%
General Public	24,889,058	24%
Institutions	30,105,291	29%
Hedge Funds	40,813,338	39.3%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 62.2%.

Top Shareholders

Top 25 shareholders own 70.27% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
34.3%	Deerfield Management Company, L.P.	35,606,974	US$164.5m	16.3%	2.28%
6.57%	CHI Advisors LLC	6,823,690	US$31.5m	16.6%	15.99%
5.01%	Millennium Management LLC	5,206,364	US$24.1m	6.32%	0.02%
3.54%	BlackRock, Inc.	3,681,603	US$17.0m	10.3%	no data
3.01%	RTW Investments, LP	3,125,000	US$14.4m	0%	0.16%
2.93%	The Vanguard Group, Inc.	3,046,216	US$14.1m	-1.35%	no data
1.93%	Aigh Capital Management, LLC	2,000,000	US$9.2m	100%	2.06%
1.41%	Point72 Asset Management, L.P.	1,461,028	US$6.7m	4.64%	0.01%
1.32%	Citadel Advisors LLC	1,366,750	US$6.3m	-7.5%	no data
1.05%	Geode Capital Management, LLC	1,093,323	US$5.1m	6.92%	no data
0.9%	Dafna Capital Management, LLC	939,164	US$4.3m	-8.62%	1.03%
0.89%	Alyeska Investment Group, L.P.	927,821	US$4.3m	-50.8%	0.01%
0.88%	State Street Global Advisors, Inc.	911,925	US$4.2m	2.25%	no data
0.79%	Thomas Hamilton	824,231	US$3.8m	39.5%	no data
0.77%	Woodline Partners LP	800,850	US$3.7m	-50.7%	0.02%
0.74%	The Goldman Sachs Group, Inc.	770,631	US$3.6m	-31.8%	no data
0.65%	Jane Street Group, LLC	678,942	US$3.1m	60.6%	no data
0.56%	Goldman Sachs Asset Management, L.P.	576,584	US$2.7m	29.4%	no data
0.55%	Verition Fund Management LLC	567,683	US$2.6m	0%	0.02%
0.52%	Driehaus Capital Management LLC	535,464	US$2.5m	0%	0.01%
0.47%	AQR Capital Management, LLC	490,061	US$2.3m	-11%	no data
0.42%	D. E. Shaw & Co., L.P.	437,399	US$2.0m	0%	no data
0.4%	Caption Management, LLC	415,294	US$1.9m	-68.4%	0.09%
0.35%	Federated Hermes, Inc.	358,907	US$1.7m	14,900%	no data
0.34%	Northern Trust Global Investments	356,775	US$1.6m	-5.69%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/03/30 14:22
End of Day Share Price	2026/03/27 00:00
Earnings	2025/12/31
Annual Earnings	2025/12/31

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

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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