TWST (NASDAQ: TWST) Emily Leproust files Rule 144 listing multiple share sales

Rhea-AI Filing Summary

TWST submitted a Rule 144 notice listing proposed and recent sales of common stock by Emily M. Leproust. The filing lists multiple sale dates and share counts tied to restricted stock vesting and open-market sales, with individual transactions on 02/23/2026, 03/06/2026, 03/20/2026, 04/21/2026, 04/22/2026, and a vesting entry on 05/01/2026.

The filing itemizes share quantities and dollar amounts for each date, indicating routine insider dispositions and a vesting event reported under Rule 144.

Key Figures

Restricted stock vesting: 5,127 shares Sale on 02/23/2026: 7,205 shares Sale on 03/06/2026: 2,423 shares +4 more

7 metrics

Restricted stock vesting 5,127 shares vesting on 05/01/2026 attributed to Issuer

Sale on 02/23/2026 7,205 shares Sale proceeds $336,544.11 reported

Sale on 03/06/2026 2,423 shares Sale proceeds $112,490.68 reported

Sale on 03/20/2026 1,742 shares Sale proceeds $76,275.91 reported

Sale on 04/21/2026 1,610 shares Sale proceeds $104,664.97 reported

Sale on 04/22/2026 8,061 shares Sale proceeds $526,289.75 reported

Broker/agent listed Fidelity Brokerage Services LLC 900 Salem Street, Smithfield RI as shown in filing

Key Terms

Rule 144, Restricted Stock Vesting, Issuer

3 terms

Rule 144 regulatory

"submitted a Rule 144 notice listing proposed and recent sales"

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

"05/01/2026 | 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.

Issuer legal

"05/01/2026 | Restricted Stock Vesting | Issuer"

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	5127	293001.90	61311704	05/04/2026	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	05/01/2026	Restricted Stock Vesting	Issuer			5127	05/01/2026	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

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 the TWST Rule 144 filing show about Emily M. Leproust's activity?

The filing lists multiple sales and a restricted stock vesting for Emily M. Leproust. It shows sales on 02/23/2026 (7,205 shares), 03/06/2026 (2,423 shares), 03/20/2026 (1,742 shares), 04/21/2026 (1,610 shares) and 04/22/2026 (8,061 shares), plus a 05/01/2026 vesting of 5,127 shares.

Were proceeds from the sales disclosed in the TWST filing?

Yes; the filing shows dollar amounts paired with each sale date. Examples include $336,544.11 for 7,205 shares on 02/23/2026 and $526,289.75 for 8,061 shares on 04/22/2026, as itemized in the notice.

Does the filing state the reason for the 05/01/2026 5,127-share entry?

The 05/01/2026 entry is labeled as Restricted Stock Vesting and attributed to the issuer as the source. It records 5,127 shares tied to compensation vesting on that date.

Is the Rule 144 filing a transfer of ownership or a proposed sale notice?

This document is a Rule 144 notice reporting proposed and recent sales; it itemizes transactions and a vesting event. It functions as a regulatory notice of intended or completed dispositions under Rule 144.

Who is the broker or transfer agent listed in the filing?

The filing identifies Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield, RI as the broker/agent for the securities listed in the Rule 144 notice.