Larimar Therapeutics Inc
Ownership
Ownership Structure
Who owns Larimar Therapeutics Inc (LRMR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 55.7% of the shares are freely tradable; institutional investors hold 85.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Deerfield Management Co | 34.28 | 35,606,974 | +16.3 | 03/31/2026 |
| Blue Owl Capital Holdings LP | 8.82 | 9,163,157 | +28.7 | 06/30/2026 |
| BlackRock Inc | 3.61 | 3,752,200 | +1.9 | 03/31/2026 |
| Defilade Capital Management, L.P. | 3.53 | 3,670,135 | +0.0 | 06/30/2026 |
| Driehaus Capital Management LLC | 2.82 | 2,934,399 | +448.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 2.76 | 2,866,349 | +0.0 | 03/31/2026 |
| Dafna Capital Management LLC | 1.93 | 2,008,164 | -1.0 | 06/30/2026 |
| The Goldman Sachs Group Inc | 1.50 | 1,561,585 | +15.9 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.12 | 2,206,446 | +0.0 | 07/31/2026 |
| iShares Russell 2000 ETF | 1.64 | 1,698,798 | -0.6 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Hamilton Thomas Edward | Director | 714,798 | 2,716,232 $ | Jul 6, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 6, 2026 | Hamilton Thomas Edward | Director | Buy | 50,000 | 3.34 | 166,890 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.