Katryn Blake - 12 Aug 2026 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Reporting relationship: Director
Issuer ticker: TWST
Reported as of: 12 Aug 2026
Net transaction value: -$275,251
SEC form: 4
Accepted by SEC: 14 Aug 2026, 16:12:07 UTC
Prior SEC filing: 01 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Kendra Fox, as Attorney-in-Fact for Katryn Blake

Key filing fact

Katryn Blake filed Form 4 for Twist Bioscience Corp (TWST) on 14 Aug 2026.

Key facts

This page summarizes Katryn Blake's Form 4 filing for Twist Bioscience Corp (TWST).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 14 Aug 2026, 16:12.

Change

Previous filing in this sequence was filed on 01 Jul 2026.
Current net transaction value: -$275,251.

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 0001505740 Primary reporting owner

BLAKE KATRYN

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

Reported non-derivative transactions

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

TWST transaction

Common Stock

Sale

Transaction value: $275,251
Shares: -2,240
Change %: -12%
Price: $122.88
Shares after: 17,208
Date: 12 Aug 2026
Ownership: Direct
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

Represents the number of shares sold by the Reporting Person to cover tax liability in connection with the vesting of Restricted Stock Units. This "sell to cover" transaction was made pursuant to a prior election by the Reporting Person and does not represent a discretionary trade by the Reporting Person.