TWST director reports multiple May 2026 share sales

TWST director Emily M. Leproust reported multiple open-market dispositions of Common Stock.

Rhea-AI Filing Summary

TWST director Emily M. Leproust reported multiple open-market dispositions of Common Stock. The filing lists planned sale of 2,265 shares in connection with restricted stock vesting on 06/05/2026 and a series of sales during March–May 2026, including transactions of $1,580,245.85 on 05/26/2026 and $1,633,407.46 on 05/27/2026.

The filings itemize individual sale dates and proceeds; post-transaction holdings and cash‑flow treatment are shown in the reported rows.

Insights

Insider Transactions Analyst

Multiple dispositions by a director are documented, with individual sale amounts listed.

Records show scheduled disposition tied to restricted stock vesting on 06/05/2026 for 2,265 shares, plus several reported sales between 03/20/2026 and 05/28/2026. Each row provides share counts and gross proceeds in dollars for those dates.

These are factual disclosures of transactions; their interpretive weight depends on total holdings and any trading-plan disclosures not present in the excerpt. Subsequent filings or Form 4 footnotes would show whether sales were pre-arranged or routine.

Key Figures

Planned vested shares to be sold: 2,265 shares Sale proceeds example: $1,580,245.85 Sale proceeds example: $1,633,407.46 +2 more

5 metrics

Planned vested shares to be sold 2,265 shares Restricted Stock Vesting on <date>06/05/2026</date>

Sale proceeds example $1,580,245.85 Proceeds reported for sale on <date>05/26/2026</date>

Sale proceeds example $1,633,407.46 Proceeds reported for sale on <date>05/27/2026</date>

Sale proceeds example $1,118,555.11 Proceeds reported for sale on <date>05/28/2026</date>

Earlier sale proceeds $526,289.79 Proceeds reported for sale on <date>04/22/2026</date>

Key Terms

Form 144, Restricted Stock Vesting, Issuer

3 terms

Form 144 regulatory

"Securities To Be Sold; Securities Sold During The Past 3 Months"

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

"Common | 06/05/2026 | 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 financial

"Restricted Stock Vesting | Issuer"

FAQ

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

What did TWST director Emily M. Leproust report in the Form 144?

The Form 144 reports planned and completed dispositions of Common Stock by Emily M. Leproust. It lists a 2,265-share planned sale on 06/05/2026 and multiple executed sales between 03/20/2026 and 05/28/2026, with per-trade proceeds shown.

How large were the individual sales disclosed for TWST (examples)?

Examples include proceeds of $1,580,245.85 on 05/26/2026 and $1,633,407.46 on 05/27/2026. Each sale row in the filing shows the date, share count, and gross proceeds in dollars.

Does the filing state whether proceeds go to the issuer or selling holder for TWST?

The excerpt lists transactions attributed to Emily M. Leproust and a vesting-related issuer entry; it ties the 2,265 shares to restricted stock vesting. Cash‑flow recipient language is limited to the listed rows and their labels.

Are the sales part of a pre-arranged trading plan according to this excerpt?

The provided excerpt does not include explicit language about a Rule 10b5-1 or similar pre-arranged trading plan. Footnotes or Form 4 disclosures would be required to confirm plan status.

What dates cover the reported transactions in the filing?

The filing lists sales on multiple dates between 03/20/2026 and 05/28/2026, plus a restricted stock vesting entry on 06/05/2026. Each row pairs a date with share counts and dollar proceeds.

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

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Accepted by SEC EDGAR 06/08/2026 - 03:47 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	2265	158197.11	62271314	06/08/2026	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	06/05/2026	Restricted Stock Vesting	Issuer			2265	06/05/2026	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	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	526289.79
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/04/2026	5127	293001.90
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

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	06/08/2026
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 Emily M. Leproust.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)