Security key
517125100
Larimar Therapeutics, Inc. - Common Stock, par value $0.001 per share (LRMR)
CUSIP: 517125100
Q4 2025 13F Holders as of 31 Dec 2025
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Total 13F shares
- 72,707,274
- Total 13F value
- $277,008,552
- Share change
- -12,638,989
- Put/Call ratio
- 12%
- SEC-reported price per share
- $3.81
- Number of holders
- 137
- Value change
- -$38,772,086
- Number of buys
- 66
- Number of sells
- 63
- Shares outstanding
- 107,502,422
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q4 2025
Institutions
137
Top holders
10
LRMR full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Larimar Therapeutics, Inc. SEC filings
Larimar Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 517125100
Recent filing periods:
Ownership snapshot
Top reported holders of LRMR - Larimar Therapeutics, Inc. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Opaleye Management Inc.
Disclosed value leader
DEERFIELD MANAGEMENT COMP...
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
13F
Lead comparable stake: 4.8%
13D/G row: Opaleye Management Inc.
Showing 1-6 of 15 holder rows.
Quick read
Opaleye Management Inc. leads the comparable SEC ownership view at 4.8%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
Opaleye Management Inc.
4.8%
BlackRock, Inc.
4.8%
GOLDMAN SACHS GROUP INC
4.1%
DEERFIELD MANAGEMENT COMPANY, L.P.
28%
RA CAPITAL MANAGEMENT, L.P.
5.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Opaleye Management Inc. |
13D/G
13F
Company
|
4.8%
|
$15,412,500
4,110,000 shares
|
+$590,966 | 29 Aug 2025 |
| BlackRock, Inc. |
13F
13D/G
Company
|
4.8%
from 13D/G
|
$10,785,590
3,339,192 shares
|
— | 30 Sep 2025 |
| GOLDMAN SACHS GROUP INC |
13D/G
13F
THE GOLDMAN SACHS GROUP, INC. · Company
|
4.1%
|
$6,058,491
2,600,211 shares
|
$0 | 31 Mar 2025 |
| DEERFIELD MANAGEMENT COMPANY, L.P. |
13F
Company
|
28%
|
$98,860,526
30,606,974 shares
|
— | 30 Sep 2025 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
5.6%
|
$19,526,484
6,045,351 shares
|
— | 30 Sep 2025 |
| Blue Owl Capital Holdings LP |
13F
Company
|
5.4%
|
$18,905,319
5,853,040 shares
|
— | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
137
Shares
72,707,274
Rows available
137
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
135
Q4 2025 holders
137
Holder diff
2
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend