Type	Name	Date
Securities purchase agreement	SECURITIES PURCHASE AGREEMENT	05/13/2022
Securities purchase agreement	SECURITIES PURCHASE AGREEMENT	11/30/2021
Securities purchase agreement	Securities Purchase Agreement	01/02/2020

Type	Name	Date
Employment agreement	Amended and Restated Employment Agreement between Biostage, Inc. and David Green	01/12/2023
Employment agreement	EMPLOYMENT AGREEMENT	08/10/2022
Employment agreement	EMPLOYMENT AGREEMENT	11/30/2021