TWST (NASDAQ: TWST) Rule 144 notice after restricted stock vesting

Rhea-AI Filing Summary

TWST submitted a Form 144 reporting a planned sale of common stock tied to restricted stock vesting with an effective date of 05/01/2026. The filing lists multiple recent dispositions by Dennis H. Cho in February–March 2026, each showing share counts and gross proceeds.

Key Figures

Restricted stock vesting date: 05/01/2026 Sale - 02/11/2026: 5,000 shares Proceeds - 02/11/2026: $249,650.00 +6 more

9 metrics

Restricted stock vesting date 05/01/2026 Securities to be sold tied to restricted stock vesting

Sale - 02/11/2026 5,000 shares Dennis H. Cho disposition on 02/11/2026

Proceeds - 02/11/2026 $249,650.00 Gross proceeds reported for 5,000‑share sale

Sale - 02/23/2026 844 shares Dennis H. Cho disposition on 02/23/2026

Proceeds - 02/23/2026 $39,423.07 Gross proceeds reported for 844‑share sale

Sale - 03/06/2026 425 shares Dennis H. Cho disposition on 03/06/2026

Proceeds - 03/06/2026 $19,731.14 Gross proceeds reported for 425‑share sale

Sale - 03/20/2026 354 shares Dennis H. Cho disposition on 03/20/2026

Proceeds - 03/20/2026 $15,500.39 Gross proceeds reported for 354‑share sale

Key Terms

Rule 144, Restricted Stock Vesting, Issuer, Compensation

4 terms

Rule 144 regulatory

"Form type listed as 144 and references to securities to be sold"

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

"Securities To Be Sold line shows "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 includes the word "Issuer""

Compensation financial

"Securities To Be Sold entry ends with "Compensation""

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

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	1962	112125.95	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			1962	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
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	02/11/2026	5000	249650.00
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	02/23/2026	844	39423.07
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	03/06/2026	425	19731.14
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	03/20/2026	354	15500.39

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 disclose about insider sales?

The filing discloses planned sales tied to restricted stock vesting on 05/01/2026. It also lists recent open‑market disposals by Dennis H. Cho on 02/11/2026, 02/23/2026, 03/06/2026, and 03/20/2026 with share counts and gross proceeds.

How many shares did Dennis H. Cho sell in the past three months per the Form 144?

The filing records four sales by Dennis H. Cho: 5,000, 844, 425, and 354 shares on specific February–March 2026 dates. Each transaction includes the reported gross proceeds for that sale.

Are the proceeds from the Dennis H. Cho sales shown in TWST's Form 144?

Yes. Each listed sale shows gross proceeds: $249,650.00, $39,423.07, $19,731.14, and $15,500.39 for the respective transactions reported in the filing.

What triggered the planned sale reported on TWST's Form 144?

The filing links the planned sale to Restricted Stock Vesting with an issuer designation and a date of 05/01/2026, indicating the shares relate to compensation that vested on that date.