Emily M. Leproust - 01 Sep 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: 01 Sep 2021
Net transactions value: -$730,844
Form type: 4
Filing time: 03 Sep 2021, 16:30:54 UTC
Previous filing: 01 Sep 2021
Next filing: 13 Sep 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	Sale	$682,174	-5,910	-2.6%	$115.43^*	219,562	01 Sep 2021	Direct	F1, F2
transaction	TWST	Common Stock	Sale	$48,670	-419	-0.19%	$116.16^*	219,143	01 Sep 2021	Direct	F1, F3

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	01 Sep 2021	Common Stock	0	$26.66	Direct	F4
holding	TWST	Employee Stock Option (right to buy)						131,290	01 Sep 2021	Common Stock	0	$23.33	Direct	F5
holding	TWST	Employee Stock Option (right to buy)						84,613	01 Sep 2021	Common Stock	0	$5.95	Direct	F6
holding	TWST	Employee Stock Option (right to buy)						202,339	01 Sep 2021	Common Stock	0	$8.82	Direct	F7

* 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 May 28, 2021.
F2	Represents the weighted average sales price per share. The shares sold at prices ranging from $115.00 to $115.89 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
F3	Represents the weighted average sales price per share. The shares sold at prices ranging from $116.09 to $116.22 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
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.
F6	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.
F7	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.