Xiaoying Mai - Feb 7, 2022 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: Director
Signature: /s/ William Solis, as Attorney-in-Fact for Xiaoying Mai
Stock symbol: TWST
Transactions as of: Feb 7, 2022
Transactions value $: $0
Form type: 4
Date filed: 2/9/2022, 03:35 PM
Next filing: Feb 10, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TWST	Common Stock	Award	$0	+13.5K		$0.00	13.5K	Feb 7, 2022	Direct	F1

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	TWST	Director Stock Option (right to buy)	Award	$0	+10.6K		$0.00	10.6K	Feb 7, 2022	Common Stock	10.6K	$60.33	Direct	F1
transaction	TWST	Director Stock Option (right to buy)	Award	$0	+11.3K		$0.00	11.3K	Feb 7, 2022	Common Stock	11.3K	$60.33	Direct	F1
transaction	TWST	Director Stock Option (right to buy)	Award	$0	+973		$0.00	973	Feb 7, 2022	Common Stock	973	$189.96	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Each equity is fully vested at the time of grant, but represent equity awards for prior annual meetings in 2019, 2020 and 2021 that the Company was not able to grant. If the grants had been made at the time of the prior annual meetings, each grant would have vested upon the earlier of (1) the 1 year anniversary of the date of grant or (2) the next annual meeting.