Twist Bioscience officer plans $93K stock sale

Twist Bioscience Corp (TWST) reported a planned sale of its common stock under Rule 144 for the account of officer Robert F. Werner.

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) reported a planned sale of its common stock under Rule 144 for the account of officer Robert F. Werner. A brokerage firm filed to sell 669 shares, related to restricted stock vesting on 08/20/2026, with some shares covering a tax obligation from the vested equity award.

Werner also reported prior sales of common stock in the last three months totaling 3,014 shares across four transactions dated 05/21/2026, 05/26/2026, 06/08/2026, and 08/03/2026.

Key Figures

Shares to be sold: 669 shares of Common Stock Aggregate market value of planned sale: $93,035.42 Shares sold on 05/21/2026: 688 shares for $36,640.54 +3 more

6 metrics

Shares to be sold 669 shares of Common Stock Planned Rule 144 sale related to restricted stock vesting on 08/20/2026

Aggregate market value of planned sale $93,035.42 Value associated with 669 shares of Twist Bioscience common stock

Shares sold on 05/21/2026 688 shares for $36,640.54 Common stock sales by Robert F. Werner during past 3 months

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

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

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

Key Terms

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

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 | 08/20/2026 | 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.

attorney-in-fact regulatory

"as attorney-in-fact for Robert Werner ATTENTION"

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.

equity award distribution financial

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Twist Bioscience (TWST) disclose in this Form 144 filing?

The filing discloses that officer Robert F. Werner plans to sell 669 shares of Twist Bioscience common stock under Rule 144, relating to restricted stock that vested on 08/20/2026, with part of the sale covering a tax obligation from the vested award.

How many TWST shares are planned for sale under this Form 144?

The notice covers a proposed sale of 669 shares of Twist Bioscience common stock. These shares are tied to the vesting of restricted stock on 08/20/2026 and include an amount to cover a related tax obligation from the equity award settlement.

What is the stated market value of the TWST shares in the planned sale?

The Form 144 lists an aggregate market value of $93,035.42 for the 669 shares of Twist Bioscience common stock proposed to be sold, based on the information provided in the securities information section.

What prior TWST stock sales by Robert F. Werner are disclosed?

The filing lists four prior sales of Twist Bioscience common stock in the past three months: 688 shares for $36,640.54, 800 shares for $49,987.20, 1,359 shares for $94,045.74, and 167 shares for $14,248.64, all attributed to Robert F. Werner.

Why does the Form 144 say some TWST shares are being sold?

The remarks state that the sale includes an amount necessary to cover a tax obligation arising from the settlement of a vested equity award distribution, indicating part of the shares sold will satisfy taxes linked to the restricted stock vesting.

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

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Accepted by SEC EDGAR 08/21/2026 - 03:24 PM EDT 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	669	93035.42	62707424	08/21/2026	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	08/20/2026	Restricted Stock Vesting	Issuer			669	08/20/2026	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	05/21/2026	688	36640.54
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

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	08/21/2026
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/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Robert Werner
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)