Twist Bioscience Corp — Director's Dealing 2021

Jul 7, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Twist Bioscience Corp (TWST)
CIK: 0001581280
Period of Report: 2021-07-01

Reporting Person: Finn Patrick John (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-07-01	Common Stock	F	257	$131.48	Disposed	41155	Direct
2021-07-02	Common Stock	M	358	$8.82	Acquired	41513	Direct
2021-07-02	Common Stock	M	1517	$26.66	Acquired	43030	Direct
2021-07-02	Common Stock	M	827	$23.33	Acquired	43857	Direct
2021-07-02	Common Stock	S	2702	$131.70	Disposed	41155	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-07-02	Employee Stock Option (right to buy)	$8.82	M	358	Disposed	2027-09-28	Common Stock (358)	Direct
2021-07-02	Employee Stock Option (right to buy)	$26.66	M	1517	Disposed	2028-11-18	Common Stock (1517)	Direct
2021-07-02	Employee Stock Option (right to buy)	$23.33	M	827	Disposed	2029-10-23	Common Stock (827)	Direct

Footnotes

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 transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on September 3, 2020.

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 vest 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 and became exercisable on October 24, 2020, and 1/48th 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.