TWST holder Emily Leproust plans share sale

TWST shareholder Emily M. Leproust filed a notice of proposed sale of 113,318 shares of common stock through Fidelity Brokerage Services LLC, with an aggregate market value of $14,183,056.89, to be sold on or after 08/10/2026 on NASDAQ.

Rhea-AI Filing Summary

TWST shareholder Emily M. Leproust filed a notice of proposed sale of 113,318 shares of common stock through Fidelity Brokerage Services LLC, with an aggregate market value of $14,183,056.89, to be sold on or after 08/10/2026 on NASDAQ. Shares outstanding were 62,707,424 as of 08/10/2026; this is a baseline figure, not the amount being offered. The filing also lists multiple open-market sales of common stock during the prior three months, including transactions on 05/21/2026, 05/26/2026, 05/27/2026, 05/28/2026, 06/08/2026, 06/22/2026, 06/25/2026, and 08/03/2026.

Key Figures

Planned shares to be sold: 113,318 shares Aggregate market value of planned sale: $14,183,056.89 Shares outstanding: 62,707,424 shares +4 more

7 metrics

Planned shares to be sold 113,318 shares Proposed sale of common stock via Fidelity Brokerage Services LLC on or after 08/10/2026

Aggregate market value of planned sale $14,183,056.89 Aggregate market value for 113,318 shares of common stock

Shares outstanding 62,707,424 shares Common shares outstanding as of 08/10/2026

Sale on 05/21/2026 6,888 shares for $366,831.46 Common stock sold by Emily M. Leproust on 05/21/2026

Sale on 05/26/2026 24,282 shares for $1,580,245.85 Common stock sold by Emily M. Leproust on 05/26/2026

Sale on 05/27/2026 25,017 shares for $1,633,407.46 Common stock sold by Emily M. Leproust on 05/27/2026

Sale on 06/25/2026 18,880 shares for $1,793,600.00 Common stock sold by Emily M. Leproust on 06/25/2026

Key Terms

Form 144, Stock Option Exercise, Fidelity Brokerage Services LLC, Securities Sold During The Past 3 Months

4 terms

Form 144 regulatory

"144: Securities Information Common | Fidelity Brokerage Services LLC"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Common | 08/10/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Fidelity Brokerage Services LLC financial

"Common | Fidelity Brokerage Services LLC 900 Salem Street"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months Emily M. Leproust"

FAQ

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

What does the Form 144 for TWST report about upcoming stock sales?

It reports that 113,318 shares of TWST common stock are planned for sale through Fidelity Brokerage Services LLC, with an aggregate market value of $14,183,056.89, expected to be sold on or after 08/10/2026 on NASDAQ.

Who is the shareholder selling TWST stock in this Form 144 filing?

The filer is Emily M. Leproust, who reports plans to sell 113,318 shares of TWST common stock via Fidelity Brokerage Services LLC and also discloses several prior sales of TWST shares over the past three months.

How many TWST shares has Emily Leproust sold in the past three months?

The filing lists multiple prior sales of TWST common stock, including 6,888 shares on 05/21/2026 and 24,282 shares on 05/26/2026, along with several additional transactions in May, June, and August 2026.

What were some recent TWST stock sale values reported in the Form 144?

Reported past sales include $366,831.46 for 6,888 shares on 05/21/2026 and $1,580,245.85 for 24,282 shares on 05/26/2026, plus several other transactions with proceeds ranging from about $147,400.21 to $1,793,600.00.

How many TWST shares were outstanding as of the planned sale date?

The filing states that 62,707,424 shares of TWST common stock were outstanding as of 08/10/2026. This figure provides context for the company’s total equity base relative to the planned sale of 113,318 shares.

On which exchange will the planned TWST stock sale occur?

The planned sale of 113,318 TWST shares by Emily M. Leproust is indicated to take place on NASDAQ, with Fidelity Brokerage Services LLC acting as the broker for the transaction on or after 08/10/2026.

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

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Available on EDGAR 08/10/2026 - 06:49 PM Accepted by SEC EDGAR 08/10/2026 - 06:49 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	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	113318	14183056.89	62707424	08/10/2026	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	08/10/2026	Stock Option Exercise	Issuer			113318	08/10/2026	Cash

* 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

144: Remarks and Signature

Remarks
Date of Notice	08/10/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/27/2025
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/ Jessica Spraker, 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)