Twist Bioscience officer plans $111K stock sale

Officer Paula Green filed a Rule 144 notice to sell up to 907 TWST shares, following several sizeable sales in prior months.

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) received a Rule 144 notice relating to potential sales of its common stock by officer Paula Green. The notice covers up to 907 shares of common stock to be sold through Fidelity Brokerage Services on NASDAQ, tied to restricted stock that vested on September 4, 2026 and granted as compensation. Over the prior three months, Paula Green reported multiple open-market sales of Twist Bioscience common stock, including 26,137 shares on June 15, 2026 for proceeds of $2,134,485.95. A remark states that the planned sale includes shares to cover a tax obligation from a vested equity award distribution.

Key Figures

Shares to be sold under Rule 144: 907 shares Aggregate market value of shares to be sold: $111,219.88 Shares outstanding: 62,707,424 shares +5 more

8 metrics

Shares to be sold under Rule 144 907 shares Common stock covered by Paula Green’s Rule 144 notice

Aggregate market value of shares to be sold $111,219.88 Value of the 907 shares of common stock in the Rule 144 notice

Shares outstanding 62,707,424 shares Twist Bioscience common stock outstanding as of September 8, 2026

Sale on June 15, 2026 26,137 shares; $2,134,485.95 Paula Green common stock sale reported for June 15, 2026

Sale on June 8, 2026 884 shares; $61,742.27 Paula Green common stock sale reported for June 8, 2026

Sale on August 21, 2026 1,360 shares; $189,130.30 Paula Green common stock sale reported for August 21, 2026

Sale on August 3, 2026 1,133 shares; $96,668.92 Paula Green common stock sale reported for August 3, 2026

Sale on June 22, 2026 291 shares; $25,410.82 Paula Green common stock sale reported for June 22, 2026

Key Terms

Rule 144, restricted stock vesting, attorney-in-fact, aggregate market value, +1 more

5 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.

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.

aggregate market value financial

"Common | Fidelity Brokerage Services LLC ... | 907 | 111219.88"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

vested equity award financial

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

FAQ

What does the Form 144 filing disclose for Twist Bioscience Corp (TWST)?

It discloses that officer Paula Green has filed a notice under Rule 144 to potentially sell up to 907 shares of Twist Bioscience common stock through Fidelity Brokerage Services on NASDAQ, related to recently vested restricted stock.

How many TWST shares are covered by the new Rule 144 notice and what is their value?

The notice covers up to 907 shares of Twist Bioscience common stock, with an aggregate market value of $111,219.88 as stated in the filing, based on market prices at the time of the notice dated September 8, 2026.

What is the source of the TWST shares to be sold under this Form 144?

The 907 shares come from restricted stock vesting on September 4, 2026, acquired from the issuer as compensation. The remarks explain that part of the sale is intended to cover a tax obligation arising from the settlement of a vested equity award.

What past TWST share sales by Paula Green are reported in the last three months?

The filing lists several common stock sales, including 884 shares on June 8, 2026 for $61,742.27, 26,137 shares on June 15, 2026 for $2,134,485.95, 291 shares on June 22, 2026, 1,133 shares on August 3, 2026, and 1,360 shares on August 21, 2026.

How many Twist Bioscience (TWST) shares are outstanding according to this filing?

The filing reports 62,707,424 shares of Twist Bioscience common stock outstanding as of September 8, 2026. This is a baseline outstanding share count and is separate from the 907 shares covered by the Rule 144 sale notice.

Who signed the Form 144 related to TWST on behalf of Paula Green?

The notice is signed by Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Paula Green, on the date of notice September 8, 2026.

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

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Available on EDGAR 09/08/2026 - 03:15 PM Accepted by SEC EDGAR 09/08/2026 - 03:15 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	907	111219.88	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			907	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
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
Paula Green 681 Gateway Blvd South San Francisco CA 94080	Common	08/21/2026	1360	189130.30

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/ Joshua Schmitt, 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)