Twist Bioscience Corp — Director's Dealing 2021

Oct 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Twist Bioscience Corp (TWST)
CIK: 0001581280
Period of Report: 2021-10-04

Reporting Person: Leproust Emily M. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-09-15	Common Stock	G	1200	—	Disposed	217943	Direct
2021-09-15	Common Stock	G	1200	—	Disposed	216743	Direct
2021-09-15	Common Stock	G	1200	—	Disposed	215543	Direct
2021-09-15	Common Stock	G	1200	—	Disposed	214343	Direct
2021-09-15	Common Stock	G	1200	—	Disposed	213143	Direct
2021-09-15	Common Stock	G	20000	—	Disposed	193143	Direct
2021-09-15	Common Stock	G	20000	—	Disposed	173143	Direct
2021-10-04	Common Stock	F	661	$105.5	Disposed	172482	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Option (right to buy)	$26.66	2028-11-18	Common Stock (0)	266539	Direct
Employee Stock Option (right to buy)	$23.33	2029-10-23	Common Stock (0)	131290	Direct
Employee Stock Option (right to buy)	$8.82	2027-09-28	Common Stock (0)	186672	Direct
Employee Stock Option (right to buy)	$5.95	2025-09-28	Common Stock (0)	70693	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: 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.