Dennis Cho - 18 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: 18 Nov 2025
Net transactions value: $0
Form type: 4
Filing time: 20 Nov 2025, 16:05:17 UTC
Previous filing: 05 Nov 2025
Next filing: 25 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	20 Nov 2025	0001883451

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TWST	Common Stock	Award	$0	+25,465	+21%	$0.000000	146,159	18 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 a restricted stock unit award ("RSU") of which 1/16th of the total number of RSUs vest on each quarterly anniversary of November 20, 2025 for a total vesting period of 48 months, subject to the Reporting Person's continuous service through each vesting date.

Remarks:

Senior Vice President, Chief Legal Officer & Corporate Secretary