Patrick John Finn - 13 Jan 2026 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Signature
/s/ Kendra Fox, as Attorney-in-Fact for Patrick John Finn
Issuer symbol
TWST
Transactions as of
13 Jan 2026
Net transactions value
-$902,239
Form type
4
Filing time
15 Jan 2026, 16:13:28 UTC
Previous filing
25 Nov 2025
Next filing
27 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Finn Patrick John President and COO C/O TWIST BIOSCIENCE CORPORATION, 681 GATEWAY BLVD., SOUTH SAN FRANCISCO /s/ Kendra Fox, as Attorney-in-Fact for Patrick John Finn 15 Jan 2026 0001755970

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TWST Common Stock Options Exercise $28,921 +3,279 +0.99% $8.82 336,162 13 Jan 2026 Direct F1
transaction TWST Common Stock Sale $931,160 -23,279 -6.9% $40.00 312,883 13 Jan 2026 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction TWST Stock Option (right to buy) Options Exercise $0 -3,279 -100% $0.000000 0 13 Jan 2026 Common Stock 3,279 $8.82 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The transactions reported on this Form 4 were affected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on May 13, 2025.
F2 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 vested on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.