Twist Bioscience (NASDAQ: TWST) officer sets 854-share sale tied to equity taxes

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) reported that officer Robert F. Werner filed a Rule 144 notice covering a proposed sale of 854 shares of common stock through Fidelity Brokerage Services LLC on or after August 24, 2026, on NASDAQ. The shares relate to restricted stock vesting, and the sale includes an amount to cover a tax obligation from a vested equity award distribution. Werner also reported several prior common stock sales over the preceding three months.

Key Figures

Proposed shares to be sold: 854 shares of common stock Broker-dealer: Fidelity Brokerage Services LLC Date of Notice: 08/24/2026 +4 more

7 metrics

Proposed shares to be sold 854 shares of common stock Proposed sale under Rule 144 related to restricted stock vesting

Broker-dealer Fidelity Brokerage Services LLC Broker listed for the 854-share proposed sale

Date of Notice 08/24/2026 Filing date for the Rule 144 notice

Sale on 05/26/2026 800 shares for $49,987.20 Common stock sold by Robert F. Werner during the past 3 months

Sale on 06/08/2026 1,359 shares for $94,045.74 Common stock sold by Robert F. Werner during the past 3 months

Sale on 08/03/2026 167 shares for $14,248.64 Common stock sold by Robert F. Werner during the past 3 months

Sale on 08/21/2026 669 shares for $93,035.42 Common stock sold by Robert F. Werner during the past 3 months

Key Terms

Rule 144, restricted stock vesting, equity award distribution, attorney-in-fact

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock vesting financial

"Common | 08/21/2026 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

equity award distribution financial

"resulting from the settlement of a vested equity award distribution."

attorney-in-fact regulatory

"as attorney-in-fact for Robert F. Werner"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing by TWST insider Robert F. Werner disclose?

The filing discloses that Robert F. Werner, an officer of Twist Bioscience Corp (TWST), has filed a Rule 144 notice for a proposed sale of 854 shares of common stock related to restricted stock vesting, with part of the sale intended to cover a related tax obligation.

How many TWST shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of 854 shares of Twist Bioscience common stock. These shares are tied to restricted stock vesting and are expected to be sold on NASDAQ after the notice date of August 24, 2026.

What TWST share sales has Robert F. Werner reported in the past three months?

Werner reported common stock sales of 800 shares on May 26, 2026 for $49,987.20, 1,359 shares on June 8, 2026 for $94,045.74, 167 shares on August 3, 2026 for $14,248.64, and 669 shares on August 21, 2026 for $93,035.42.

Why does the TWST Form 144 mention tax obligations?

The remarks state the sale includes an amount necessary to cover a tax obligation that arises from the settlement of a vested equity award distribution, indicating that part of the proposed sale is tied to taxes on equity compensation.

Who is executing the proposed TWST share sale for Robert F. Werner?

The proposed sale of 854 TWST common shares is listed through Fidelity Brokerage Services LLC. The notice is signed by Jennifer Ruchti as a duly authorized representative of Fidelity, acting as attorney-in-fact for Robert F. Werner.

On which market are the TWST shares in this Form 144 expected to trade?

The securities in the notice are described as common stock of Twist Bioscience Corp listed on NASDAQ. The proposed 854-share sale would therefore occur on the NASDAQ market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/24/2026 - 03:25 PM Accepted by SEC EDGAR 08/24/2026 - 03:23 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001590947
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Twist Bioscience Corp
SEC File Number	001-38720
Address of Issuer	681 GATEWAY BLVD. SOUTH SAN FRANCISCO CALIFORNIA 94080
Phone	800-719-0671
Name of Person for Whose Account the Securities are To Be Sold	WERNER ROBERT F.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	854	120219.72	62707424	08/24/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/21/2026	Restricted Stock Vesting	Issuer			854	08/21/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Robert F. Werner 681 Gateway Blvd South San Francisco CA 94080	Common	05/26/2026	800	49987.20
Robert F. Werner 681 Gateway Blvd South San Francisco CA 94080	Common	06/08/2026	1359	94045.74
Robert F. Werner 681 Gateway Blvd South San Francisco CA 94080	Common	08/03/2026	167	14248.64
Robert F. Werner 681 Gateway Blvd South San Francisco CA 94080	Common	08/21/2026	669	93035.42

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	08/24/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Robert F. Werner
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)