Emily M. Leproust - 03 Nov 2026 Form 4 Insider Report for Twist Bioscience Corp (TWST)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: TWST
Reported as of: 03 Nov 2026
Net transaction value: -$619,193
SEC form: 4
Accepted by SEC: 05 Nov 2026, 16:05:13 UTC
Prior SEC filing: 07 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ Kendra Fox, as Attorney-in-Fact for Emily M. Leproust

Filing notes and source

Key filing fact

Emily M. Leproust filed Form 4 for Twist Bioscience Corp (TWST) on 05 Nov 2026.

Key facts

This page summarizes Emily M. Leproust's Form 4 filing for Twist Bioscience Corp (TWST).
1 reported transaction and 2 derivative rows are listed below.
Accepted by SEC: 05 Nov 2026, 16:05.

Change

Previous filing in this sequence was filed on 07 Oct 2026.
Current net transaction value: -$619,193.

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 0001753655 Primary reporting owner

Leproust Emily M.

Relationship: Chief Executive Officer, Director
Address: C/O TWIST BIOSCIENCE CORPORATION, 681 GATEWAY BLVD., SOUTH SAN FRANCISCO
Signature: /s/ Kendra Fox, as Attorney-in-Fact for Emily M. Leproust
Signature date: 05 Nov 2026

Reported non-derivative transactions

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

TWST transaction

Common Stock

Sale

Transaction value: -$619,193
Shares: -4,573
Change %: -0.81%
Price: $135.40
Shares after: 558,187
Date: 03 Nov 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

TWST holding Derivative

Employee Stock Option (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 131,290
Date: 03 Nov 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 131,290
Exercise price: $23.33
Footnotes: F2

TWST holding Derivative

Employee Stock Option (right to buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 64,950
Date: 03 Nov 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 64,950
Exercise price: $67.85
Footnotes: F3

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote F2

25% of the shares subject to the option vested on October 24, 2020, and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.

Footnote F3

Represents performance stock options granted to the reporting person on September 1, 2020, that vested and became exercisable on December 19, 2022 as a result of the reporting person having met the applicable performance criteria.