Twist Bioscience officer plans $29K stock sale

Officer Robert F. Werner filed a Rule 144 notice to sell 238 shares of Twist Bioscience common stock, partly to cover taxes on a vested equity award.

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) is the issuer for a planned sale of common stock under Rule 144 by officer Robert F. Werner through Fidelity Brokerage Services LLC. The notice covers a proposed sale of 238 shares of common stock, acquired via restricted stock vesting as compensation from Twist Bioscience.

The filing also lists several prior sales of Twist Bioscience common stock by Robert F. Werner during the preceding three months and notes that the planned sale includes shares to cover a tax obligation arising from settlement of a vested equity award.

Key Figures

Shares to be sold: 238 shares Aggregate market value of planned sale: $29,184.49 Recent sale on June 8, 2026: 1,359 shares for $94,045.74 +3 more

6 metrics

Shares to be sold 238 shares Planned Rule 144 sale of Twist Bioscience common stock

Aggregate market value of planned sale $29,184.49 Estimated value of 238 Twist Bioscience shares covered by the notice

Recent sale on June 8, 2026 1,359 shares for $94,045.74 Past three-month sale of Twist Bioscience common stock by Robert F. Werner

Recent sale on August 3, 2026 167 shares for $14,248.64 Past three-month sale disclosed in the Form 144

Recent sale on August 21, 2026 669 shares for $93,035.42 Past three-month sale disclosed in the Form 144

Recent sale on August 24, 2026 854 shares for $120,219.72 Past three-month sale disclosed in the Form 144

Key Terms

Rule 144, Restricted Stock Vesting, vested 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 | 09/04/2026 | 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.

vested equity award distribution financial

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

attorney-in-fact regulatory

"as attorney-in-fact for Robert 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 disclose for Twist Bioscience Corp (TWST)?

The Form 144 discloses that officer Robert F. Werner intends to sell 238 shares of Twist Bioscience common stock through Fidelity Brokerage Services under Rule 144, with shares originating from a restricted stock vesting as compensation.

How many Twist Bioscience (TWST) shares are planned to be sold in this notice?

The notice covers a proposed sale of 238 shares of Twist Bioscience common stock. These shares were acquired from the issuer through restricted stock vesting in connection with compensation.

What is the approximate aggregate market value of the Twist Bioscience (TWST) shares in this Form 144?

The Form 144 reports an approximate aggregate market value of $29,184.49 for the 238 shares of Twist Bioscience common stock covered by the planned Rule 144 sale.

What prior Twist Bioscience (TWST) stock sales by Robert F. Werner are disclosed?

The filing lists past three-month sales of Twist Bioscience common stock by Robert F. Werner including 1,359 shares for $94,045.74, 167 shares for $14,248.64, 669 shares for $93,035.42, and 854 shares for $120,219.72.

Why does the Form 144 say some Twist Bioscience (TWST) shares are being sold?

The remarks state that the sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution, indicating part of the sale is related to tax withholding needs.

Who is executing the planned Rule 144 sale for Twist Bioscience (TWST) shares?

The notice identifies Fidelity Brokerage Services LLC as the broker for the 238-share planned sale of Twist Bioscience common stock, and it is signed by Daniel Tucci as a duly authorized representative and attorney-in-fact for Robert F. Werner.

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

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Available on EDGAR 09/08/2026 - 03:13 PM Accepted by SEC EDGAR 09/08/2026 - 03:12 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	238	29184.49	62707424	09/08/2026	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	09/04/2026	Restricted Stock Vesting	Issuer			238	09/04/2026	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	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
Robert F. Werner 681 Gateway Blvd South San Francisco CA 94080	Common	08/24/2026	854	120219.72

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	09/08/2026
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)