Twist Bioscience's Emily Leproust plans $923K sale

Twist Bioscience Corp (TWST) is the issuer of common stock referenced in a notice filed for the account of Emily M. Leproust.

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) is the issuer of common stock referenced in a notice filed for the account of Emily M. Leproust. The notice indicates an intent to sell 6,639 shares of TWST common stock through Fidelity Brokerage Services LLC, with an aggregate market value of $923,261.83 as of August 21, 2026. Shares of common stock outstanding were reported as 62,707,424 as of that date; this is a baseline figure, not the amount being sold. The planned sale is related to restricted stock vesting and includes an amount to cover a tax obligation arising from settlement of a vested equity award distribution. The filing also lists several TWST common stock sales by Emily M. Leproust in the prior three months, each with specified share counts and dollar amounts.

Key Figures

Shares proposed to be sold: 6,639 shares Aggregate market value of proposed sale: $923,261.83 Shares outstanding: 62,707,424 shares +3 more

6 metrics

Shares proposed to be sold 6,639 shares Common stock covered by the Rule 144 notice

Aggregate market value of proposed sale $923,261.83 Market value of 6,639 TWST common shares as of August 21, 2026

Shares outstanding 62,707,424 shares TWST common shares outstanding as of August 21, 2026

Sale on August 10, 2026 113,318 shares; $14,183,062.19 Past 3 months TWST common stock sale by Emily M. Leproust

Sale on May 26, 2026 24,282 shares; $1,580,245.85 Past 3 months TWST common stock sale by Emily M. Leproust

Sale on May 27, 2026 25,017 shares; $1,633,407.46 Past 3 months TWST common stock sale by Emily M. Leproust

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 | 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.

vested equity award distribution financial

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

attorney-in-fact regulatory

"as attorney-in-fact for Emily M. Leproust"

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

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

What does the Form 144 filing related to TWST disclose?

It discloses that Emily M. Leproust has filed a notice of proposed sale under Rule 144 for 6,639 shares of Twist Bioscience Corp (TWST) common stock, with an aggregate market value of $923,261.83 as of August 21, 2026.

How many Twist Bioscience (TWST) shares are proposed to be sold under this Form 144?

The notice reports an intended sale of 6,639 shares of Twist Bioscience (TWST) common stock, to be executed through Fidelity Brokerage Services LLC and listed on NASDAQ.

What is the reported market value of the TWST shares to be sold?

The filing lists an aggregate market value of $923,261.83 for the 6,639 Twist Bioscience (TWST) common shares covered by the notice, as of August 21, 2026.

How many Twist Bioscience (TWST) shares were outstanding as of the date in the Form 144?

The notice states that 62,707,424 shares of Twist Bioscience (TWST) common stock were outstanding as of August 21, 2026, separate from the smaller amount covered by the proposed sale.

What recent TWST stock sales by Emily M. Leproust are disclosed?

The filing lists several TWST common stock sales in the past three months, including 113,318 shares for $14,183,062.19 on August 10, 2026 and other transactions with specified share amounts and aggregate dollar values.

Why does the Form 144 mention tax obligations for the TWST share sale?

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, tying the transaction to restricted stock vesting.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 08/21/2026 - 04:02 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	0001753655
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	Leproust Emily M.
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
Relationship to Issuer	Director

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	6639	923261.83	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			6639	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
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/21/2026	6888	366831.46
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/26/2026	24282	1580245.85
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/27/2026	25017	1633407.46
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/28/2026	16470	1118555.11
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	06/08/2026	2265	158197.11
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	06/22/2026	1688	147400.21
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	06/25/2026	18880	1793600.00
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/03/2026	5101	435223.44
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/10/2026	113318	14183062.19
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/12/2026	19952	2495508.37

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 Emily M. Leproust
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)