Hong Yu - May 18, 2022 Form 4 Insider Report for Biostage, Inc. (BSTG)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BSTG	Stock Option (right to buy)	Award	$0	+22.1K		$0.00	22.1K	May 18, 2022	Common Stock, par value $0.01 per share	22.1K	$4.71	Direct	F1

Showing 1 to 1 of 1 entries

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	This stock option grant was fully exercisable as of date of grant.

This form has been signed under power of attorney.