Twist Bioscience officer plans 949-share sale

The notice also lists seven earlier common-stock sales by Dennis H. Cho, dated August 3 through October 2, 2026.

Available on EDGAR 11/03/2026 - 03:22 PM EST Accepted by SEC EDGAR 11/03/2026 - 03:21 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) officer Dennis H. Cho reported a planned sale of 949 common shares, with an aggregate market value of $128,496.21 and an approximate sale date of November 3, 2026, through Fidelity Brokerage Services LLC. The notice identifies the shares as restricted stock vesting from the issuer on November 2, 2026, and says the sale includes an amount necessary to cover a tax obligation resulting from settlement of a vested equity award distribution.

Key Figures

Planned sale: 949 shares Aggregate market value: $128,496.21 Shares outstanding: 62,707,424 shares

3 metrics

Planned sale 949 shares Common shares; approximate sale date November 3, 2026

Aggregate market value $128,496.21 Planned sale of common shares

Shares outstanding 62,707,424 shares Figure listed with the sale notice

Key Terms

Rule 144, Restricted Stock Vesting, vested equity award distribution

3 terms

Rule 144 regulatory

"paragraph (a) of Rule 144"

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

"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.

vested equity award distribution financial

"settlement of a vested equity award distribution"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many TWST shares did Dennis H. Cho plan to sell?

Dennis H. Cho reported a planned sale of 949 common shares, with an aggregate market value of $128,496.21 and an approximate sale date of November 3, 2026.

What prior TWST share sales did Dennis H. Cho report?

The notice lists seven prior sales: 1,070 shares for $91,293.68 on August 3; 14,205 shares for $1,558,998.75 on August 5; 14,205 shares for $1,843,098.75 on August 19; 1,598 shares for $222,228.11 on August 21; 412 shares for $50,521.05 on September 8; 348 shares for $57,591.01 on September 21; and 9,514 shares for $1,797,040.47 on October 2, 2026.

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

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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	0001883451
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Twist Bioscience Corp
SEC File Number	001-38720
Address of Issuer	681 GATEWAY BLVD. SOUTH SAN FRANCISCO CALIFORNIA 94080
Phone	800-719-0671
Name of Person for Whose Account the Securities are To Be Sold	Cho Dennis
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	Officer

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	949	128496.21	62707424	11/03/2026	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	11/02/2026	Restricted Stock Vesting	Issuer			949	11/02/2026	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	08/03/2026	1070	91293.68
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	08/05/2026	14205	1558998.75
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	08/19/2026	14205	1843098.75
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	08/21/2026	1598	222228.11
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	09/08/2026	412	50521.05
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	09/21/2026	348	57591.01
Dennis H. Cho 681 Gateway Blvd South San Francisco CA 94080	Common	10/02/2026	9514	1797040.47

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	11/03/2026
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	/s/ Louis Kurnick, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Dennis H. Cho
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)