Dennis Cho - 03 Nov 2025 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Role: Senior Vice President, Chief Legal Officer & Corporate Secretary
Signature: /s/ Kendra Fox, as Attorney-in-Fact for Dennis Cho
Issuer symbol: TWST
Transactions as of: 03 Nov 2025
Net transactions value: -$32,689
Form type: 4
Filing time: 05 Nov 2025, 16:05:18 UTC
Previous filing: 03 Nov 2025
Next filing: 20 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Cho Dennis	Senior Vice President, Chief Legal Officer & Corporate Secretary	C/O TWIST BIOSCIENCE CORPORATION, 681 GATEWAY BLVD, SOUTH SAN FRANCISCO	/s/ Kendra Fox, as Attorney-in-Fact for Dennis Cho	05 Nov 2025	0001883451

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TWST	Common Stock	Sale	$32,689	-1,019	-0.84%	$32.08	120,694	03 Nov 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

Content

Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

Remarks:

Senior Vice President, Chief Legal Officer & Corporate Secretary