TWST insider sales: 6,888 shares vesting; Leproust sold 7,205 and 8,061 shares (TWST)

Rhea-AI Filing Summary

Twist Bioscience Corp filed a Form 144 notice to sell 6,888 shares of Common Stock related to restricted stock vesting on 05/20/2026. The filing also lists multiple secondary transactions by Emily M. Leproust within the prior three months, including sales of 7,205 shares on 02/23/2026 and 8,061 shares on 04/22/2026.

The filing is a routine insider notice of proposed resale under securities rules and records recent dispositions by a reporting person; it does not state proceeds recipients beyond the selling person or additional conditions.

Insights

Corporate Governance Analyst

Routine Form 144 filing disclosing a proposed resale tied to restricted stock vesting.

The filing lists 6,888 shares to be sold upon restricted stock vesting on 05/20/2026 and records several prior open‑market dispositions by Emily M. Leproust across February–May 2026. This is a disclosure of planned and recent transactions, not a company capital event.

Cash‑flow treatment to the issuer is not stated in the excerpt. Subsequent transaction confirmations and settlement details will appear in market trade reports or amended filings.

Key Figures

Shares to be sold: 6,888 shares Sale example: 7,205 shares Sale example: 8,061 shares +1 more

4 metrics

Shares to be sold 6,888 shares restricted stock vesting on 05/20/2026

Sale example 7,205 shares sold on 02/23/2026 by Emily M. Leproust

Sale example 8,061 shares sold on 04/22/2026 by Emily M. Leproust

Sale example 5,127 shares sold on 05/04/2026 by Emily M. Leproust

Key Terms

Form 144, restricted stock vesting, issuer

3 terms

Form 144 regulatory

"Form type line and header identifying the filing as a Form 144"

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.

restricted stock vesting financial

"Securities To Be Sold entry: "Restricted Stock Vesting""

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.

issuer regulatory

"Securities To Be Sold entry showing "Issuer" as the seller source"

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	6888	366831.46	62271314	05/21/2026	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	05/20/2026	Restricted Stock Vesting	Issuer			6888	05/20/2026	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	02/23/2026	7205	336544.11
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	03/06/2026	2423	112490.68
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	03/20/2026	1742	76275.91
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	04/21/2026	1610	104664.97
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	04/22/2026	8061	526289.75
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/04/2026	5127	293001.90

144: Remarks and Signature

Remarks

Date of Notice

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)

FAQ

What does TWST's Form 144 filing disclose?

It discloses a proposed resale of 6,888 shares tied to restricted stock vesting on 05/20/2026. The notice also lists multiple sales by Emily M. Leproust during Feb–May 2026 with specific dates and share counts.

Who is the reporting person in TWST's Form 144?

The filing identifies Emily M. Leproust as the individual with multiple recent sales. The document lists her address and several transaction dates with share counts in the excerpt provided.

Are proceeds from the sales paid to Twist Bioscience (TWST)?

The excerpt does not state that proceeds will go to the company; it lists individual dispositions tied to restricted stock vesting. Cash‑flow treatment to the issuer is not disclosed in the provided text.

What recent insider sales are listed for TWST in the excerpt?

Examples shown include sales of 7,205 shares on 02/23/2026 and 8,061 shares on 04/22/2026. Several other dated transactions between Feb and May 2026 are listed with share counts and dollar amounts.