Emily M. Leproust - 04 Oct 2021 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: 04 Oct 2021
Net transactions value: -$69,736
Form type: 4
Filing time: 06 Oct 2021, 16:35:23 UTC
Previous filing: 13 Sep 2021
Next filing: 08 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	Gift	$0	-1,200	-0.55%	$0.000000	217,943	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-1,200	-0.55%	$0.000000	216,743	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-1,200	-0.55%	$0.000000	215,543	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-1,200	-0.56%	$0.000000	214,343	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-1,200	-0.56%	$0.000000	213,143	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-20,000	-9.4%	$0.000000	193,143	15 Sep 2021	Direct
transaction	TWST	Common Stock	Gift	$0	-20,000	-10%	$0.000000	173,143	15 Sep 2021	Direct
transaction	TWST	Common Stock	Tax liability	$69,736	-661	-0.38%	$105.50	172,482	04 Oct 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
holding	TWST	Employee Stock Option (right to buy)						266,539	04 Oct 2021	Common Stock	0	$26.66	Direct	F2
holding	TWST	Employee Stock Option (right to buy)						131,290	04 Oct 2021	Common Stock	0	$23.33	Direct	F3
holding	TWST	Employee Stock Option (right to buy)						186,672	04 Oct 2021	Common Stock	0	$8.82	Direct	F4
holding	TWST	Employee Stock Option (right to buy)						70,693	04 Oct 2021	Common Stock	0	$5.95	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	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.
F3	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.
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	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.