Insider for company (TWST) plans 1,070-share Rule 144 stock sale

Rhea-AI Filing Summary

Dennis H. Cho filed to sell 1,070 shares of common stock through Fidelity Brokerage Services LLC on or about August 3, 2026. These shares were acquired via restricted stock vesting on July 31, 2026 as compensation. Over the prior three months, Cho reported multiple open-market sales, including 14,205 shares for $990,798.75 on May 29, 2026 and another 14,205 shares for $1,274,898.75 on June 24, 2026.

Key Figures

Planned shares to be sold: 1,070 shares Aggregate market value of planned sale: $91,293.68 Acquisition date of planned sale shares: July 31, 2026 +3 more

6 metrics

Planned shares to be sold 1,070 shares Common stock planned for sale on or about August 3, 2026

Aggregate market value of planned sale $91,293.68 Value of 1,070 shares of common stock in planned Rule 144 sale

Acquisition date of planned sale shares July 31, 2026 Restricted stock vesting date for 1,070 compensation shares

Sale on May 29, 2026 14,205 shares for $990,798.75 Common stock sold by Dennis H. Cho during past 3 months

Sale on June 24, 2026 14,205 shares for $1,274,898.75 Common stock sold by Dennis H. Cho during past 3 months

Sale on May 4, 2026 1,962 shares for $112,125.95 Common stock sold by Dennis H. Cho during past 3 months

Key Terms

Restricted Stock Vesting, Compensation, Securities To Be Sold, Fidelity Brokerage Services LLC

4 terms

Restricted Stock Vesting financial

"Common | 07/31/2026 | 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.

Compensation financial

"1070 | 07/31/2026 | Compensation"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

Fidelity Brokerage Services LLC financial

"Common | Fidelity Brokerage Services LLC 900 Salem Street"

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

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Available on EDGAR 08/03/2026 - 03:49 PM Accepted by SEC EDGAR 08/03/2026 - 03:49 PM Learn about SEC filing dates

FAQ

What stock sale is Dennis H. Cho planning for TWST under this filing?

Dennis H. Cho plans to sell 1,070 shares of common stock, with an aggregate market value of $91,293.68, through Fidelity Brokerage Services LLC on or about August 3, 2026, according to the Rule 144 notice.

How did Dennis H. Cho acquire the 1,070 TWST shares he plans to sell?

The 1,070 shares to be sold were acquired through restricted stock vesting on July 31, 2026 as compensation from the issuer, before being scheduled for sale under this Rule 144 notice.

What TWST stock sales has Dennis H. Cho reported in the past 3 months?

Over the past three months, Dennis H. Cho reported several sales, including 1,962 shares for $112,125.95 on May 4, 2026 and 1,642 shares for $87,447.34 on May 21, 2026, along with larger transactions of 14,205 shares in May and June.

What were the largest recent TWST stock transactions by Dennis H. Cho?

The largest recent transactions were two sales of 14,205 shares each, one on May 29, 2026 for $990,798.75 and another on June 24, 2026 for $1,274,898.75, as disclosed in the three-month sales history.

Through which broker will Dennis H. Cho execute the planned TWST share sale?

The planned sale of 1,070 shares of common stock with a value of $91,293.68 is to be executed through Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island, as listed in the securities information section.

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	1070	91293.68	62271314	08/03/2026	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	07/31/2026	Restricted Stock Vesting	Issuer			1070	07/31/2026	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
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	06/22/2026	346	30213.55
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	06/24/2026	14205	1274898.75

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)