Info
Insider Ownership

Insider Trading & Ownership of Eric D. Shaff

Location: Cambridge, MA
Summary: The estimated net worth of Eric D. Shaff is at least $256,840 dollars as of 18 Nov 2025. Eric D. Shaff is the Director of Seres Therapeutics, Inc. and owns shares of Seres Therapeutics, Inc. (MCRB) stock worth about $256.8K.
Signature: /s/ Thomas J. DesRosier, attorney-in-fact for Eric D. Shaff
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Ownership of Eric D. Shaff

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
MCRB	Seres Therapeutics, Inc.	Director	$256,840	-$19,283	-7%	15 Nov 2025
SGTX	Sigilon Therapeutics, Inc.	Director				11 Aug 2023

Insider Transactions Reported by Eric D. Shaff:

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.