Multiple insider sales and a 346-share vesting at TWST (NASDAQ: TWST)

Rhea-AI Filing Summary

Issuer reported insider sales and a restricted-stock vesting. The filing lists a Restricted Stock Vesting of 346 shares on 06/18/2026 recorded as compensation. It also discloses multiple sales by Dennis H. Cho: 1,962 shares on 05/04/2026, 1,642 shares on 05/21/2026, 14,205 shares on 05/29/2026, and 402 shares on 06/08/2026, with proceeds shown in the filing for each sale.

Insights

Corporate Governance Analyst

Multiple small-to-mid sized insider dispositions plus a compensation vesting are reported.

The filing shows a restricted stock vesting of 346 shares on 06/18/2026 recorded as compensation and four separate sales by Dennis H. Cho on 05/04/2026, 05/21/2026, 05/29/2026, and 06/08/2026

These transactions are routine notices of planned or reported dispositions; timing and method details beyond dates, share counts, and proceeds are not provided in the excerpt. Subsequent regulatory filings may clarify whether sales were open-market, plan-based, or for other reasons.

Key Figures

Restricted stock vesting: 346 shares Sale - 05/04/2026: 1,962 shares Sale - 05/21/2026: 1,642 shares +3 more

6 metrics

Restricted stock vesting 346 shares 06/18/2026, recorded as Compensation

Sale - 05/04/2026 1,962 shares Proceeds $112,125.95

Sale - 05/21/2026 1,642 shares Proceeds $87,447.34

Sale - 05/29/2026 14,205 shares Proceeds $990,798.75

Sale - 06/08/2026 402 shares Proceeds $28,077.37

Brokerage firm listed Fidelity Brokerage Services LLC Address on securities section

Key Terms

Form 144, Restricted Stock Vesting, Compensation

3 terms

Form 144 regulatory

"144: 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 | 06/18/2026 | 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.

Compensation financial

"346 | 06/18/2026 | Compensation"

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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	346	30213.55	62271314	06/22/2026	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	06/18/2026	Restricted Stock Vesting	Issuer			346	06/18/2026	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	05/04/2026	1962	112125.95
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	05/21/2026	1642	87447.34
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	05/29/2026	14205	990798.75
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	06/08/2026	402	28077.37

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 share vesting did TWST report in this Form 144?

The filing reports a Restricted Stock Vesting of 346 shares on 06/18/2026 recorded as compensation. This entry appears under the securities-to-be-sold / vesting section and is labeled Compensation.

Which insider executed sales reported for TWST and when?

Dennis H. Cho executed four reported sales: 1,962 shares on 05/04/2026, 1,642 shares on 05/21/2026, 14,205 shares on 05/29/2026, and 402 shares on 06/08/2026. Each sale line includes proceeds in the excerpt.

Are proceeds for the reported TWST sales shown in the filing?

Yes. Each sale line in the excerpt includes a proceeds amount: for example, $112,125.95 for 1,962 shares on 05/04/2026 and $990,798.75 for 14,205 shares on 05/29/2026 as shown in the filing.

Does the Form 144 excerpt state the sales method for TWST transactions?

The excerpt lists dates, share counts, and proceeds for each sale but does not specify the sales method (e.g., open-market or Rule 10b5-1 plan) in the provided text. Further filings could disclose method details.

Who is listed as the broker or recipient for the securities noted?

The excerpt shows Fidelity Brokerage Services LLC with an address tied to the securities entry and lists Common stock on NASDAQ in the securities section of the filing.