Emily M. Leproust - 01 Apr 2022 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: President & CEO, Director
Signature: /s/ William Solis, as Attorney-in-Fact for Emily M. Leproust
Issuer symbol: TWST
Transactions as of: 01 Apr 2022
Net transactions value: -$58,624
Form type: 4
Filing time: 05 Apr 2022, 16:35:18 UTC
Previous filing: 23 Feb 2022
Next filing: 26 Apr 2022
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	$58,624	-1,108	-0.57%	$52.91	193,289	01 Apr 2022	Direct	F1, F2

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	01 Apr 2022	Common Stock	0	$5.95	Direct	F3
holding	TWST	Employee Stock Option (right to buy)						150,879	01 Apr 2022	Common Stock	0	$8.82	Direct	F4
holding	TWST	Employee Stock Option (right to buy)						266,539	01 Apr 2022	Common Stock	0	$26.66	Direct	F5
holding	TWST	Employee Stock Option (right to buy)						131,290	01 Apr 2022	Common Stock	0	$23.33	Direct	F6

* 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	Includes shares that were acquired under the Issuer's Employee Stock Purchase Plan in a transaction that was exempt under both Rule 16b-3(d) and Rule 16b-3(c)
F3	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.
F4	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.
F5	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.
F6	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.