Insider Trading & Ownership of Sr One Capital Management, Llc

Location
985 Old Eagle School Road, Suite 511, Wayne, PA
Summary
The estimated value of insider holdings of Sr One Capital Management, Llc is at least $129M dollars as of October 14, 2025. Sr One Capital Management, Llc is the 10%+ Owner of Arcellx, Inc. and owns shares of Arcellx, Inc. (ACLX) stock worth about $91.7M. Sr One Capital Management, Llc is the 10%+ Owner of Zenas BioPharma, Inc. and owns shares of Zenas BioPharma, Inc. (ZBIO) stock worth about $36.4M. Sr One Capital Management, Llc is the 10%+ Owner of eFFECTOR Therapeutics, Inc. and owns shares of eFFECTOR Therapeutics, Inc. stock worth about $1.1M.
Signature
/s/ Sasha Keough, attorney-in-fact for SR One Capital Management, LLC
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Ownership of Sr One Capital Management, Llc

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
ACLX Arcellx, Inc. 10%+ Owner $91.7M May 11, 2023
ZBIO Zenas BioPharma, Inc. 10%+ Owner $36.4M +$2.4M +7.05% Oct 9, 2025
EFTR eFFECTOR Therapeutics, Inc. 10%+ Owner $1.1M Nov 27, 2023

Insider Transactions Reported by Sr One Capital Management, 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.