EcoR1 Capital, LLC (Oleg Nodelman) - Insider Trading & Ownership

Notable person
Oleg Nodelman
Location
357 Tehama Street #3, San Francisco, CA
Summary
The estimated value of insider holdings of EcoR1 Capital, LLC is at least $1.17B dollars as of July 30, 2025. EcoR1 Capital, LLC is the 10%+ Owner of Mirati Therapeutics, Inc. and owns shares of Mirati Therapeutics, Inc. stock worth about $437M. EcoR1 Capital, LLC is the Director, 10%+ Owner of Zymeworks Inc. and owns shares of Zymeworks Inc. (ZYME) stock worth about $342M. EcoR1 Capital, LLC is the Director, 10%+ Owner of ANAPTYSBIO, INC and owns shares of ANAPTYSBIO, INC (ANAB) stock worth about $102M. EcoR1 Capital, LLC is the 10%+ Owner of iTeos Therapeutics, Inc. and owns shares of iTeos Therapeutics, Inc. (ITOS) stock worth about $85.5M. EcoR1 Capital, LLC is the 10%+ Owner of PROTHENA CORP PUBLIC LTD CO and owns shares of PROTHENA CORP PUBLIC LTD CO (PRTA) stock worth about $40.5M. EcoR1 Capital, LLC is the 10%+ Owner of Graphite Bio, Inc. and owns shares of LENZ Therapeutics, Inc. (LENZ) stock worth about $34.8M. EcoR1 Capital, LLC is the 10%+ Owner of Tango Therapeutics, Inc. and owns shares of Tango Therapeutics, Inc. (TNGX) stock worth about $31M. EcoR1 Capital, LLC is the 10%+ Owner of Voyager Therapeutics, Inc. and owns shares of Voyager Therapeutics, Inc. (VYGR) stock worth about $27.5M. EcoR1 Capital, LLC is the 10%+ Owner of Adaptimmune Therapeutics PLC and owns shares of Adaptimmune Therapeutics PLC (ADAP) stock worth about $25.1M. EcoR1 Capital, LLC is the 10%+ Owner of TScan Therapeutics, Inc. and owns shares of TScan Therapeutics, Inc. (TCRX) stock worth about $24.8M. EcoR1 Capital, LLC is the 10%+ Owner of Mersana Therapeutics, Inc. and owns shares of Mersana Therapeutics, Inc. (MRSN) stock worth about $21.5M. EcoR1 Capital, LLC is the 10%+ Owner of Corvus Pharmaceuticals, Inc. and owns shares of Corvus Pharmaceuticals, Inc. (CRVS) stock worth about $199K.
Signature
/s/ Oleg Nodelman
All Insider Reports
All Insider Reports

Ownership of EcoR1 Capital, LLC

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
MRTX Mirati Therapeutics, Inc. 10%+ Owner $437M Dec 18, 2023
ZYME Zymeworks Inc. Director, 10%+ Owner $342M +$58M +20.4% Jun 26, 2025
ANAB ANAPTYSBIO, INC Director, 10%+ Owner $102M +$1.1M +1.09% Dec 30, 2024
ITOS iTeos Therapeutics, Inc. 10%+ Owner $85.5M +$38.7M +82.6% May 14, 2025
PRTA PROTHENA CORP PUBLIC LTD CO 10%+ Owner $40.5M -$50.8M -55.6% May 2, 2025
LENZ LENZ Therapeutics, Inc. 10%+ Owner $34.8M Jan 6, 2023
TNGX Tango Therapeutics, Inc. 10%+ Owner $31M -$8.44M -21.4% Nov 6, 2024
VYGR Voyager Therapeutics, Inc. 10%+ Owner $27.5M Jan 9, 2023
ADAP Adaptimmune Therapeutics PLC 10%+ Owner $25.1M Jul 28, 2025
TCRX TScan Therapeutics, Inc. 10%+ Owner $24.8M May 26, 2023
MRSN Mersana Therapeutics, Inc. 10%+ Owner $21.5M Dec 19, 2024
CRVS Corvus Pharmaceuticals, Inc. 10%+ Owner $199K Sep 30, 2021
ODTC Odonate Therapeutics, Inc. 10%+ Owner Dec 1, 2021

Insider Transactions Reported by EcoR1 Capital, LLC:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.