Larimar Therapeutics Ownership | Who Owns Larimar Therapeutics?
Larimar Therapeutics Ownership Summary
Larimar Therapeutics is owned by 31.37% institutional investors, 1.10% insiders, and 67.53% retail investors. Deerfield management company, l.p. (series c) is the largest institutional shareholder, holding 47.80% of LRMR shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.10% of its assets in Larimar Therapeutics shares.
LRMR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Larimar Therapeutics | 31.37% | 1.10% | 67.53% |
| Sector | Healthcare Stocks | 232.01% | 10.74% | -142.75% |
| Industry | Biotech Stocks | 381.47% | 10.55% | -292.02% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Deerfield management company, l.p. (series c) | 30.61M | 47.80% | $98.86M |
| Ra capital management | 6.05M | 9.44% | $19.53M |
| Blue owl capital lp | 6.82M | 8.71% | $26.00M |
| Blackrock | 3.13M | 5.85% | $22.72M |
| Opaleye management | 3.72M | 5.81% | $10.56M |
| Rtw investments, lp | 3.13M | 4.88% | $10.09M |
| Blackrock funding, inc. /de | 3.68M | 4.70% | $14.03M |
| Vanguard group | 3.05M | 3.89% | $11.61M |
| Adage capital partners gp | 1.90M | 2.97% | $6.14M |
| Alyeska investment group | 1.89M | 2.95% | $6.10M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Blue owl capital lp | 6.82M | 1.95% | $26.00M |
| Aigh capital management | 2.00M | 1.84% | $7.62M |
| Deerfield management company, l.p. (series c) | 30.61M | 1.51% | $98.86M |
| Opaleye management | 3.72M | 1.49% | $10.56M |
| Dafna capital management | 1.03M | 0.82% | $3.32M |
| Altium capital management lp | 505.00K | 0.55% | $1.95M |
| Ra capital management | 6.05M | 0.24% | $19.53M |
| Sphera funds management | 260.38K | 0.18% | $841.04K |
| Rtw investments, lp | 3.13M | 0.12% | $10.09M |
| Mangrove partners | 442.24K | 0.11% | $1.43M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Deerfield management company, l.p. (series c) | 30.61M | 1.51% | 9.38M |
| Rtw investments, lp | 3.13M | 0.12% | 3.13M |
| Adage capital partners gp | 1.90M | 0.01% | 1.90M |
| Point72 asset management | 1.22M | 0.01% | 1.22M |
| Woodline partners lp | 1.62M | 0.02% | 1.00M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Janus henderson group | - | - | -5.57M |
| Two sigma advisers, lp | 252.37K | 0.00% | -894.55K |
| Two sigma investments, lp | 134.73K | 0.00% | -768.88K |
| Fred alger management | - | - | -737.55K |
| Stempoint capital lp | - | - | -704.35K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Rtw investments, lp | 3.13M | 0.12% | 3.13M | $10.09M |
| Adage capital partners gp | 1.90M | 0.01% | 1.90M | $6.14M |
| Point72 asset management | 1.22M | 0.01% | 1.22M | $3.95M |
| Hap trading | 262.78K | 0.06% | 262.78K | $848.77M |
| Hap trading | 237.78K | 0.07% | 237.78K | $687.17K |
Sold Out
| Holder | Change |
|---|---|
| National bank of canada /fi/ | -2.00 |
| Larson financial group | -4.00 |
| Nelson, van denburg & campbell wealth management group | -5.00 |
| Quadrant capital group | -14.00 |
| Capital performance advisors llp | -18.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 91 | -40.91% | 24,571,182 | -71.27% | 31 | 0.18% | 39 | -58.06% | 31 | 14.81% |
| Sep 30, 2025 | 147 | 24.58% | 83,602,867 | 38.89% | 130 | 1.47% | 87 | 22.54% | 26 | 23.81% |
| Jun 30, 2025 | 124 | 18.10% | 62,303,719 | 2.43% | 97 | 1.08% | 72 | 50.00% | 24 | -22.58% |
| Mar 31, 2025 | 10 | -91.80% | 31,178,885 | -50.84% | 48 | 0.49% | 5 | -92.19% | 1 | -97.14% |
| Dec 31, 2024 | 116 | -8.66% | 61,296,513 | -4.71% | 96 | 0.95% | 61 | -6.15% | 32 | -5.88% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 1.34M | 2.10% | - |
| Vanguard Total Stock Mkt Idx Inv | 1.95M | 1.83% | - |
| iShares Russell 2000 ETF | 1.20M | 1.14% | 1.20M |
| Fidelity Advisor Biotechnology I | 524.80K | 0.82% | - |
| Invesco Dorsey Wright SmallCap Momt ETF | 422.53K | 0.66% | - |
| Alger Small Cap Growth B | 398.96K | 0.62% | - |
| Heptagon Driehaus US Micro Cap Eq C$ Acc | 387.15K | 0.61% | -2.69K |
| iShares Russell 2000 Growth ETF | 388.03K | 0.61% | - |
| Janus Henderson Hrzn Biotec E2 USD | 347.56K | 0.54% | -107.54K |
| Fidelity Small Cap Index | 488.54K | 0.46% | 18.51K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Feb 27, 2026 | Flynn James E | * Director by Deputization | Buy | $4.16M |
| Feb 27, 2026 | Flynn James E | * Director by Deputization | Buy | $10.00M |
| Feb 27, 2026 | Flynn James E | * Director by Deputization | Buy | $5.42M |
| Feb 27, 2026 | Flynn James E | * Director by Deputization | Buy | $5.42M |
| Feb 27, 2026 | Hamilton Thomas Edward | - | Buy | $500.00K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q3 | 3 | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q2 | - | - |
LRMR Ownership FAQ
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