Insider Trading & Ownership of Arthur Tzianabos

Location: Bedford, MA
Summary: The estimated net worth of Arthur Tzianabos is at least $1,424,996 dollars as of 12 Mar 2026. Arthur Tzianabos is the Interim Executive Chair, Director of Stoke Therapeutics, Inc. and owns shares of Stoke Therapeutics, Inc. (STOK) stock worth about $1.25M. Arthur Tzianabos is the Director of Q32 Bio Inc. and owns shares of Q32 Bio Inc. (QTTB) stock worth about $171.3K.
Signature: /s/ Jonathan Allan, Attorney-in-Fact
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Ownership of Arthur Tzianabos

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
STOK	Stoke Therapeutics, Inc.	Interim Executive Chair, Director	$1,253,663	-$174,214	-12%	10 Mar 2026
QTTB	Q32 Bio Inc.	Director	$171,333			23 Oct 2025
AKUS	Akouos, Inc.	Director				30 Nov 2022

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.