Jan Johannessen - 12 May 2026 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Reporting relationship: Director
Issuer ticker: TWST
Reported as of: 12 May 2026
Net transaction value: -$673,440
SEC form: 4
Accepted by SEC: 14 May 2026, 16:05:09 UTC
Prior SEC filing: 09 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Kendra Fox, as Attorney-in-Fact for Jan Johannessen

Key filing fact

Jan Johannessen filed Form 4 for Twist Bioscience Corp (TWST) on 14 May 2026.

Key facts

This page summarizes Jan Johannessen's Form 4 filing for Twist Bioscience Corp (TWST).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 14 May 2026, 16:05.

Change

Previous filing in this sequence was filed on 09 Feb 2026.
Current net transaction value: -$673,440.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001224168 Primary reporting owner

JOHANNESSEN JAN

Relationship: Director
Address: C/O TWIST BIOSCIENCE CORPORATION, 681 GATEWAY BLVD., SOUTH SAN FRANCISCO
Signature: /s/ Kendra Fox, as Attorney-in-Fact for Jan Johannessen
Signature date: 14 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TWST transaction

Common Stock

Options Exercise

Transaction value
Shares: +12,000
Change %: +68%
Price: $14.00^*
Shares after: 29,754
Date: 12 May 2026
Ownership: Direct

TWST transaction

Common Stock

Sale

Transaction value: $673,440
Shares: -12,000
Change %: -40%
Price: $56.12
Shares after: 17,754
Date: 12 May 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

TWST transaction Derivative

Employee Stock Option (right to buy)

Options Exercise

Transaction value
Shares: +12,000
Change %
Price: $0.000000^*
Shares after: 10,304
Date: 12 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 12,000
Exercise price: $14.00
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

1/3rd of the shares subject to the option vested and became exercisable on October 30, 2019, and 1/3rd of the shares subject to the option vested and became exercisable on each annual anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.