Twist Bioscience (NASDAQ: TWST) officer adds $189K sale after $2.1M June trade

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) received a Rule 144 notice relating to planned sales of its common stock by officer Paula Green through Fidelity Brokerage Services LLC on NASDAQ. The notice covers up to 1,360 shares, tied to restricted stock vesting used in part to satisfy tax obligations from a vested equity award. Over the prior three months, Paula Green reported several sales of Twist Bioscience common shares on specific dates with disclosed share amounts and dollar proceeds.

Key Figures

Shares covered by Rule 144 notice: 1,360 shares Associated value of covered shares: $189,130.30 Sale on 05/21/2026: 1,399 shares for $74,505.99 +4 more

7 metrics

Shares covered by Rule 144 notice 1,360 shares Common stock of Twist Bioscience Corp to be sold under Rule 144

Associated value of covered shares $189,130.30 Value reported with 1,360 Twist Bioscience Corp common shares

Sale on 05/21/2026 1,399 shares for $74,505.99 Twist Bioscience Corp common stock sold by Paula Green during past 3 months

Sale on 06/08/2026 884 shares for $61,742.27 Twist Bioscience Corp common stock sold by Paula Green during past 3 months

Sale on 06/15/2026 26,137 shares for $2,134,485.95 Twist Bioscience Corp common stock sold by Paula Green during past 3 months

Sale on 06/22/2026 291 shares for $25,410.82 Twist Bioscience Corp common stock sold by Paula Green during past 3 months

Sale on 08/03/2026 1,133 shares for $96,668.92 Twist Bioscience Corp common stock sold by Paula Green during past 3 months

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact, vested 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 Paula Green"

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.

vested equity award distribution financial

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

FAQ

What does the Form 144 filing disclose for TWST?

It discloses that officer Paula Green has filed a Rule 144 notice to sell up to 1,360 shares of Twist Bioscience Corp common stock through Fidelity Brokerage Services LLC on NASDAQ, related to restricted stock vesting and associated tax obligations.

How many TWST shares are covered by Paula Green’s planned Rule 144 sale?

The notice states that 1,360 shares of Twist Bioscience Corp common stock are covered in the planned Rule 144 sale, connected to restricted stock vesting and compensation.

What is the approximate value of the TWST shares in the planned Rule 144 sale?

The securities information section reports an approximate value of $189,130.30 associated with the 1,360 shares of Twist Bioscience Corp common stock covered by the Rule 144 notice.

What is the source of the TWST shares Paula Green plans to sell?

The filing describes the shares as arising from “Restricted Stock Vesting” from the Issuer, categorized under “Compensation”, with the Rule 144 sale connected to settlement of a vested equity award.

Did Paula Green sell TWST shares in the past three months?

Yes. The filing lists multiple Twist Bioscience Corp common stock sales by Paula Green over the past three months, including 1,399 shares for $74,505.99 on 05/21/2026 and 26,137 shares for $2,134,485.95 on 06/15/2026, plus several smaller transactions.

Why does the Form 144 mention tax obligations for TWST shares?

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 Twist Bioscience Corp share sale is to satisfy related taxes.

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

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Available on EDGAR 08/21/2026 - 03:51 PM Accepted by SEC EDGAR 08/21/2026 - 03:51 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	0001753672
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	Green Paula
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	1360	189130.30	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			1360	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
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	05/21/2026	1399	74505.99
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	06/08/2026	884	61742.27
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	06/15/2026	26137	2134485.95
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	06/22/2026	291	25410.82
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	08/03/2026	1133	96668.92

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/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Paula Green
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)