Insider sale notice — TWST (NASDAQ: TWST) 1,742 shares reported

Rhea-AI Filing Summary

TWST filing reports a Form 144 notice for the proposed sale of Common Stock. The filing lists 1,742 shares tied to restricted stock vesting with a transaction date of 03/19/2026. The filing also reports recent dispositions by Emily M. Leproust: 1,605 shares on 12/22/2025, 5,001 shares on 02/03/2026, 7,205 shares on 02/23/2026, and 2,423 shares on 03/06/2026.

Insights

Insider Transactions Analyst

Form 144 lists a proposed resale of 03/19/2026 restricted shares and several recent dispositions by an insider.

The filing shows a proposed sale of 1,742 shares associated with restricted stock vesting on 03/19/2026. It separately records multiple prior dispositions by Emily M. Leproust across 12/22/2025 through 03/06/2026, with listed share amounts.

Cash‑flow treatment and buyer details are not provided in the excerpt; subsequent filings or brokerage statements would be required for pricing and proceeds information.

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	1742	76275.91	61311704	03/20/2026	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	03/19/2026	Restricted Stock Vesting	Compensation			1742	03/19/2026	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	12/22/2025	1605	55462.38
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	02/03/2026	5001	232924.08
Emily M. Leproust 681 Gateway Blvd South San Francisc 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

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 Form 144 report?

The Form 144 reports a proposed resale of 1,742 shares tied to restricted stock vesting on 03/19/2026. It also lists multiple recent dispositions by Emily M. Leproust with specific share counts and dates.

Who is the insider mentioned in the TWST Form 144?

The filing names Emily M. Leproust with recent dispositions of Common Stock on 12/22/2025, 02/03/2026, 02/23/2026, and 03/06/2026, showing specific share amounts for each date.

How many shares are listed for proposed sale in the TWST filing?

The excerpt lists a proposed sale of 1,742 shares associated with restricted stock vesting and dated 03/19/2026. The filing pairs that item with a broker-dealer entry for execution.

Does the Form 144 include sale proceeds or prices for TWST shares?

The provided excerpt shows share counts and dates but does not include explicit sale prices or total proceeds. Pricing and dollar amounts are not present in the visible lines of the excerpt.