Emily M. Leproust - 03 Jan 2023 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: Chief Executive Officer, Director
Signature: /s/ Alyssa Zhang, as Attorney-in-Fact for Emily M. Leproust
Issuer symbol: TWST
Transactions as of: 03 Jan 2023
Net transactions value: -$26,620
Form type: 4
Filing time: 05 Jan 2023, 15:30:56 UTC
Previous filing: 21 Dec 2022
Next filing: 26 Jan 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TWST	Common Stock	Tax liability	$14,953	-628	-0.26%	$23.81	239,079	03 Jan 2023	Direct	F1
transaction	TWST	Common Stock	Tax liability	$11,667	-490	-0.2%	$23.81	238,589	03 Jan 2023	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
holding	TWST	Employee Stock Option (right to buy)						24,360	03 Jan 2023	Common Stock	0	$5.95	Direct	F2
holding	TWST	Employee Stock Option (right to buy)						150,879	03 Jan 2023	Common Stock	0	$8.82	Direct	F3
holding	TWST	Employee Stock Option (right to buy)						266,539	03 Jan 2023	Common Stock	0	$26.66	Direct	F4
holding	TWST	Employee Stock Option (right to buy)						131,290	03 Jan 2023	Common Stock	0	$23.33	Direct	F5

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

Explanation of Responses:

Id	Content
F1	Represents shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of certain Restricted Stock Units ("RSUs") previously granted to the Reporting Person. Such withholding is exempt from Section 16(b) pursuant to Rule 16b-3(e).
F2	The option is immediately exercisable. 25% of the shares subject to the option vested on September 1, 2016 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	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 vested 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.
F4	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.
F5	25% of the shares subject to the option vested on October 24, 2020, 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.