William Baird - Insider Trading & Ownership

Location: C/O Bluebird Bio, Inc., 60 Binney Street, Cambridge, MA
Summary: The estimated net worth of William Baird is at least $724K dollars as of May 15, 2025. William Baird is the President and CEO, Director of 2seventy bio, Inc. and owns shares of 2seventy bio, Inc. (TSVT) stock worth about $692K. William Baird is the Chief Financial Officer of bluebird bio, Inc. and owns shares of bluebird bio, Inc. (BLUE) stock worth about $32.6K.
Signature: /s/ William Baird
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Ownership of William Baird

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
TSVT	2seventy bio, Inc.	President and CEO, Director	$692K	-$120K	-14.8%	May 13, 2025
BLUE	bluebird bio, Inc.	Chief Financial Officer	$32.6K			Nov 11, 2021
AXLA	Axcella Health Inc.	Director				May 19, 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.