Twist Bioscience Corp — Director's Dealing 2021

May 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Twist Bioscience Corp (TWST)
CIK: 0001581280
Period of Report: 2021-05-20

Reporting Person: Banyai William (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-20	Common Stock	F	675	$97.75	Disposed	400064	Direct
2021-05-21	Common Stock	S	1900	$94.1547	Disposed	398164	Direct
2021-05-21	Common Stock	S	9253	$95.4697	Disposed	388911	Direct
2021-05-21	Common Stock	S	4155	$96.2990	Disposed	384756	Direct
2021-05-21	Common Stock	S	3191	$97.2252	Disposed	381565	Direct
2021-05-21	Common Stock	S	1776	$98.5441	Disposed	379789	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 August 28, 2020.

F3: Represents the weighted average sales price per share. The shares sold at prices ranging from $93.63 to $94.59 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: Represents the weighted average sales price per share. The shares sold at prices ranging from $94.88 to $95.86 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.

F5: Represents the weighted average sales price per share. The shares sold at prices ranging from $95.88 to $96.78 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.

F6: Represents the weighted average sales price per share. The shares sold at prices ranging from $96.89 to $97.88 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.

F7: Represents the weighted average sales price per share. The shares sold at prices ranging from $98.15 to $98.74 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.