Security key
517125100
Larimar Therapeutics, Inc. - Common Stock, par value $0.001 per share (LRMR)
CUSIP: 517125100
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Common Stock, par value $0.001 per share
- Total 13F shares
- 85,496,565
- Total 13F value
- $274,794,131
- Share change
- +23,159,322
- Put/Call ratio
- 10%
- SEC-reported price per share
- $3.23
- Number of holders
- 135
- Value change
- +$75,244,593
- Number of buys
- 87
- Number of sells
- 35
- Shares outstanding
- 107,502,422
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
135
Top holders
10
LRMR full security history
Ownership snapshot
Full 13F holder table
Larimar Therapeutics, Inc. SEC filings
Larimar Therapeutics, Inc. company facts
Broader feeds
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
29 Aug 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.
Open SEC evidence
Opens Opaleye Management Inc.'s linked filing trail.
Comparable ownership
Top 5
Opaleye Management Inc.
4.8%
BlackRock, Inc.
4.8%
GOLDMAN SACHS GROUP INC
4.1%
DEERFIELD MANAGEMENT COMPANY, L.P.
20%
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
|
$8,785,542
3,039,980 shares
|
— | 30 Jun 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
|
20%
|
$61,360,405
21,231,974 shares
|
— | 30 Jun 2025 |
| RA CAPITAL MANAGEMENT, L.P. |
13F
Company
|
5.6%
|
$17,471,064
6,045,351 shares
|
— | 30 Jun 2025 |
| Blue Owl Capital Holdings LP |
13F
Company
|
4.6%
|
$14,242,036
4,928,040 shares
|
— | 30 Jun 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 Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
135
Shares
85,496,565
Rows available
135
| 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 Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
116
Q3 2025 holders
135
Holder diff
19
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|