Twist Bioscience (TWST) insider Leproust plans resale after option exercise

Rhea-AI Filing Summary

Twist Bioscience insider Emily M. Leproust filed to resell up to 19,952 shares of common stock, held at Fidelity Brokerage Services, with an aggregate market value of $2,495,507.42, in a transaction related to a stock option exercise dated August 12, 2026, on NASDAQ. The filing also lists prior common stock sales over the past three months, including 113,318 shares for $14,183,062.19 on August 10, 2026. The issuer reports 62,707,424 shares of common stock outstanding as a baseline figure.

Key Figures

Shares to be sold: 19,952 shares Aggregate market value of planned sale: $2,495,507.42 Shares outstanding: 62,707,424 shares +3 more

6 metrics

Shares to be sold 19,952 shares Common stock to be resold related to stock option exercise on 08/12/2026

Aggregate market value of planned sale $2,495,507.42 Market value for 19,952 common shares referenced in the filing

Shares outstanding 62,707,424 shares Common stock outstanding as referenced in the filing

Largest recent sale shares 113,318 shares Common shares sold on 08/10/2026 by Emily M. Leproust

Largest recent sale value $14,183,062.19 Aggregate value of 113,318 shares sold on 08/10/2026

Prior sale example 25,017 shares Common shares sold on 05/27/2026 with aggregate value $1,633,407.46

Key Terms

stock option exercise, aggregate market value, Securities To Be Sold, Securities Sold During The Past 3 Months

4 terms

stock option exercise financial

"Common | 08/12/2026 | 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.

aggregate market value financial

"Common | Fidelity Brokerage Services LLC ... | 19952 | 2495507.42"

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.

Securities To Be Sold regulatory

"144: Securities To Be Sold Common | 08/12/2026 | Stock Option Exercise"

Securities Sold During The Past 3 Months regulatory

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

FAQ

What does the TWST Form 144 filing by Emily M. Leproust disclose?

The filing discloses an intent to resell up to 19,952 TWST common shares following a stock option exercise on August 12, 2026. It also lists several prior stock sales over the preceding three months with corresponding share amounts and dollar values.

How many TWST shares does Emily M. Leproust plan to sell in this Form 144?

Emily M. Leproust plans to sell up to 19,952 shares of TWST common stock. These shares are associated with a stock option exercise dated August 12, 2026 and are held at Fidelity Brokerage Services LLC for potential sale on NASDAQ.

What is the reported market value of the TWST shares in the planned Form 144 sale?

The Form 144 reports an aggregate market value of $2,495,507.42 for the 19,952 TWST shares that may be sold. This figure reflects the market value tied to the planned resale, not necessarily the final proceeds from any executed transactions.

What prior TWST stock sales by Emily M. Leproust are listed in the last three months?

The filing lists multiple prior TWST sales, including 113,318 shares for $14,183,062.19 on August 10, 2026 and other trades ranging from 2,265 to 25,017 shares on various dates in May, June, and August 2026.

How many TWST common shares are reported outstanding in this Form 144?

The Form 144 reports 62,707,424 shares of TWST common stock outstanding. This number provides a baseline reference for the company’s equity, separate from the 19,952 shares that may be sold under this particular filing.

What is the nature of acquisition for the TWST shares in this Form 144?

The 19,952 TWST shares covered by the Form 144 were acquired through a stock option exercise from the issuer, with the payment described as cash on August 12, 2026, before being made available for potential resale on NASDAQ.

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Available on EDGAR 08/12/2026 - 04:30 PM Accepted by SEC EDGAR 08/12/2026 - 04:29 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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

Relationship to Issuer

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	19952	2495507.42	62707424	08/12/2026	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	08/12/2026	Stock Option Exercise	Issuer			19952	08/12/2026	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
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/10/2026	113318	14183062.19

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

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