James M. Thorburn - 28 May 2021 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: Chief Financial Officer
Signature: /s/ William Solis, as Attorney-in-Fact for James M. Thorburn
Issuer symbol: TWST
Transactions as of: 28 May 2021
Net transactions value: -$500,040
Form type: 4
Filing time: 02 Jun 2021, 16:30:20 UTC
Previous filing: 24 May 2021
Next filing: 10 Jun 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	$159,960	+6,000	+13%	$26.66	52,732	28 May 2021	Direct
transaction	TWST	Common Stock	Sale	$660,000	-6,000	-11%	$110.00	46,732	28 May 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	-6,000	-11%	$0.000000	48,415	28 May 2021	Common Stock	6,000	$26.66	Direct	F2

* 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 December 16, 2020.
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.