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EcoR1 Capital, LLC

Q4 2025 13F Holdings

  • Location
    san francisco, CA
  • Num holdings

    30

  • Value ($000)

    $2,204,009

  • Date Filed
    02/17/2026
  • Form type
    13F-HR
  • CIK
    0001587114
  • All SEC filings
  • Note
    Holdings aggregated across “other managers” listed in original SEC filing, see here for detailed holdings broken out by other managers
Compare Q4 2025 to
Select Quarter
Issuer Name
Class
CUSIP
VALUE
%
Shares
Principal
Option Type
Z
ZYME

ZYMEWORKS INC

COM
98985Y108
$604.81M
27 %

22,970,388

A
ANAB

ANAPTYSBIO INC

COM
032724106
$382.03M
17 %

7,880,094

---

JAZZ PHARMACEUTICALS PLC

SHS USD
G50871105
$290.1M
13 %

1,706,469

C
CRNX

CRINETICS PHARMACEUTICALS IN

COM
22663K107
$199.61M
9 %

4,288,120

C
CNTA

CENTESSA PHARMACEUTICALS PLC

SPONSORED ADS
152309100
$77.91M
4 %

3,115,000

---

CRISPR THERAPEUTICS AG

NAMEN AKT
H17182108
$72.85M
3 %

1,389,276

---

MBX BIOSCIENCES INC

COM
55287L101
$66.98M
3 %

2,123,604

I
IMNM

IMMUNOME INC

COM
45257U108
$61.34M
3 %

2,855,590

O
ORIC

ORIC PHARMACEUTICALS INC

COM
68622P109
$55.04M
3 %

6,728,116

G
GLPG

GALAPAGOS NV

SPON ADR
36315X101
$54.51M
3 %

1,667,119

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