Patrick John Finn - 02 Sep 2021 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: Chief Commercial Officer
Signature: /s/ William Solis, as Attorney-in-Fact for Patrick John Finn
Issuer symbol: TWST
Transactions as of: 02 Sep 2021
Net transactions value: -$255,914
Form type: 4
Filing time: 07 Sep 2021, 17:26:35 UTC
Previous filing: 26 Aug 2021
Next filing: 06 Oct 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TWST	Common Stock	Options Exercise	$3,158	+358	+0.9%	$8.82	40,181	02 Sep 2021	Direct
transaction	TWST	Common Stock	Options Exercise	$40,443	+1,517	+3.8%	$26.66	41,698	02 Sep 2021	Direct
transaction	TWST	Common Stock	Options Exercise	$19,294	+827	+2%	$23.33	42,525	02 Sep 2021	Direct
transaction	TWST	Common Stock	Sale	$318,809	-2,702	-6.4%	$117.99^*	39,823	02 Sep 2021	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	Employee Stock Option (right to buy)	Options Exercise	$0	-358	-2.2%	$0.000000	15,625	02 Sep 2021	Common Stock	358	$8.82	Direct	F2
transaction	TWST	Employee Stock Option (right to buy)	Options Exercise	$0	-1,517	-3.7%	$0.000000	39,442	02 Sep 2021	Common Stock	1,517	$26.66	Direct	F3
transaction	TWST	Employee Stock Option (right to buy)	Options Exercise	$0	-827	-3.7%	$0.000000	21,513	02 Sep 2021	Common Stock	827	$23.33	Direct	F4

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

Explanation of Responses:

Id	Content
F1	The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on September 3, 2020.
F2	The option is immediately exercisable. 10% of the shares subject to the option vested on September 28, 2017, 15% of the shares subject to the option vest on September 28, 2018, and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.
F3	20% of the shares subject to the option vested and became exercisable on October 31, 2019, and 1/60th of the shares subject to the option vest and become exercisable on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.
F4	25% of the shares subject to the option vested and became exercisable on October 24, 2020, and 1/48th of the shares subject to the option vest and become exercisable on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.