Joyce Reyes - Jun 1, 2022 Form 4 Insider Report for Histogen Inc. (HSTO)

Role: Senior Vice President of Regulatory, Quality and Technical Operations
Signature: /s/ Susan A. Knudson as attorney-in-fact for Joyce Reyes
Stock symbol: HSTO
Transactions as of: Jun 1, 2022
Transactions value $: $0
Form type: 4
Date filed: 6/3/2022, 04:31 PM
Next filing: Apr 28, 2023

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	HSTO	Stock Option (right to buy)	Award	$0	+7.83K		$0.00	7.83K	Jun 1, 2022	Common Stock	7.83K	$3.20	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	On June 2, 2022, the Issuer effected a 1-for-20 reverse stock split of its common stock (the "Reverse Stock Split"). The amount of securities reported on this Form 4 and the exercise price have been adjusted to reflect the Reverse Stock Split.
F2	1/4 of the shares subject to the option vest one year after the date of grant, on 6/1/2023, and the remaining 1/36 of the shares vest on a monthly basis thereafter.

Remarks:

Senior Vice President of Regulatory, Quality and Technical Operations