Larimar Therapeutics Ownership | Who Owns Larimar Therapeutics?
Larimar Therapeutics Ownership Summary
Larimar Therapeutics is owned by 12.55% institutional investors, 1.10% insiders, and 86.36% retail investors. Deerfield management company, l.p. (series c) is the largest institutional shareholder, holding 48.81% of LRMR shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.25% of its assets in Larimar Therapeutics shares.
LRMR Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Larimar Therapeutics | 12.55% | 1.10% | 86.36% |
| Sector | Healthcare Stocks | 35.58% | 11.87% | 52.55% |
| Industry | Biotech Stocks | 35.75% | 11.83% | 52.41% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Deerfield management company, l.p. (series c) | 35.61M | 48.81% | $160.23M |
| Blue owl capital lp | 7.12M | 9.76% | $32.04M |
| Ra capital management | 6.05M | 9.44% | $19.53M |
| Blackrock | 3.13M | 5.85% | $22.72M |
| Opaleye management | 3.72M | 5.81% | $10.56M |
| Blackrock funding, inc. /de | 3.75M | 5.14% | $16.88M |
| Millennium management | 3.63M | 4.97% | $16.31M |
| Aigh capital management | 3.00M | 4.11% | $13.50M |
| Driehaus capital management | 2.93M | 4.02% | $13.20M |
| Vanguard group | 3.05M | 3.89% | $11.61M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Blue owl capital lp | 7.12M | 8.61% | $32.04M |
| Gem investment advisors | 854.23K | 3.78% | $3.84M |
| Dafna capital management | 2.03M | 2.08% | $9.13M |
| Deerfield management company, l.p. (series c) | 35.61M | 1.89% | $160.23M |
| Aigh capital management | 3.00M | 1.84% | $13.50M |
| Opaleye management | 3.72M | 1.49% | $10.56M |
| Altium capital management lp | 505.00K | 0.55% | $1.95M |
| Ra capital management | 6.05M | 0.24% | $19.53M |
| Soleus capital management | 1.07M | 0.19% | $4.80M |
| Sphera funds management | 260.38K | 0.18% | $841.04K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Deerfield management company, l.p. (series c) | 35.61M | 1.89% | 5.00M |
| Driehaus capital management | 2.93M | 0.10% | 2.40M |
| Deep track capital, lp | 1.50M | 0.11% | 1.50M |
| Dafna capital management | 2.03M | 2.08% | 1.09M |
| Soleus capital management | 1.07M | 0.19% | 1.07M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Janus henderson group | - | - | -5.57M |
| Rtw investments, lp | 1.50M | 0.07% | -1.63M |
| Millennium management | 3.63M | 0.01% | -1.58M |
| Two sigma advisers, lp | 252.37K | 0.00% | -894.55K |
| Citadel advisors | 519.13K | 0.00% | -847.62K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Deep track capital, lp | 1.50M | 0.11% | 1.50M | $6.75M |
| Soleus capital management | 1.07M | 0.19% | 1.07M | $4.80M |
| Marshall wace, llp | 933.46K | 0.00% | 933.46K | $4.20M |
| Qube research | 847.64K | 0.00% | 847.64K | $3.81M |
| Summittx capital | 379.76K | 0.05% | 379.76K | $1.71M |
Sold Out
| Holder | Change |
|---|---|
| National bank of canada /fi/ | -2.00 |
| Larson financial group | -4.00 |
| Nelson, van denburg & campbell wealth management group | -5.00 |
| Capital performance advisors llp | -18.00 |
| Lindbrook capital | -60.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 58 | -57.35% | 9,152,782 | -87.36% | 12 | 0.15% | 35 | -45.31% | 13 | -70.45% |
| Dec 31, 2025 | 91 | -40.91% | 24,571,182 | -71.27% | 31 | 0.18% | 39 | -58.06% | 31 | 14.81% |
| Sep 30, 2025 | 147 | 24.58% | 83,602,867 | 38.89% | 130 | 1.47% | 87 | 22.54% | 26 | 23.81% |
| Jun 30, 2025 | 124 | 18.10% | 62,303,719 | 2.43% | 97 | 1.08% | 72 | 50.00% | 24 | -22.58% |
| Mar 31, 2025 | 10 | -91.80% | 31,178,885 | -50.84% | 48 | 0.49% | 5 | -92.19% | 1 | -97.14% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.34M | 2.25% | - |
| Vanguard US Total Market Shares ETF | 1.34M | 2.10% | - |
| iShares Russell 2000 ETF | 1.13M | 1.09% | 9.54K |
| Heptagon Driehaus US Micro Cap Eq C$ Acc | 870.10K | 0.84% | 17.53K |
| 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% | - |
| iShares Russell 2000 Growth ETF | 388.03K | 0.61% | - |
| CREF Total Global Stock Account R3 | 569.10K | 0.55% | 569.10K |
| Janus Henderson Hrzn Biotec E2 USD | 347.56K | 0.54% | -107.54K |
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 Q2 | - | - |
| 2026 Q1 | 7 | - |
| 2025 Q3 | 3 | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
LRMR Ownership FAQ
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