Notice to Sell 4,160 Common Shares

TWST filing: proposed resale of Common Stock following restricted stock vesting.

Rhea-AI Filing Summary

TWST filing: proposed resale of Common Stock following restricted stock vesting. The filing lists 4,160 shares of Common Stock to be sold in connection with a Restricted Stock Vesting event dated 05/20/2026. The filing also reports recent sales by Patrick Finn of 4,294, 2,321 and 2,844 shares on 02/23/2026, 04/23/2026 and 05/04/2026, respectively.

Insights

Securities Compliance Counsel

Form 144 notice for resale after restricted stock vesting; routine affiliate disclosure.

This filing lists a proposed sale of 4,160 shares of Common Stock tied to a Restricted Stock Vesting event on 05/20/2026. The broker/dealer listed is Fidelity Brokerage Services LLC.

Past transactions by Patrick Finn are documented: 4,294 shares on 02/23/2026, 2,321 shares on 04/23/2026, and 2,844 shares on 05/04/2026. Cash‑flow treatment and any lockup or resale restrictions beyond the vesting event are not stated in the provided excerpt.

Key Figures

Proposed resale: 4,160 shares Prior sale 1: 4,294 shares Prior sale 2: 2,321 shares +1 more

4 metrics

Proposed resale 4,160 shares Restricted Stock Vesting on <date>05/20/2026</date>

Prior sale 1 4,294 shares Sale by Patrick Finn on <date>02/23/2026</date> with proceeds $200,571.88

Prior sale 2 2,321 shares Sale by Patrick Finn on <date>04/23/2026</date> with proceeds $141,026.51

Prior sale 3 2,844 shares Sale by Patrick Finn on <date>05/04/2026</date> with proceeds $162,531.19

Key Terms

Form 144, Restricted Stock Vesting, Issuer

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

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 | 05/20/2026 | 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.

Issuer regulatory

"Restricted Stock Vesting | Issuer"

FAQ

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

What does the TWST Form 144 report?

The filing reports a proposed sale of 4,160 shares of Common Stock tied to a Restricted Stock Vesting on 05/20/2026. It also lists recent sales by Patrick Finn on three prior dates with share counts and proceeds.

Who is the selling broker in the TWST Form 144?

The filing names Fidelity Brokerage Services LLC at 900 Salem Street, Smithfield RI. The excerpt shows the broker/dealer’s address and listing but does not specify transaction execution details or timing beyond the vesting date.

How many shares did Patrick Finn sell recently according to the filing?

The filing shows Patrick Finn sold 4,294 shares on 02/23/2026, 2,321 shares on 04/23/2026, and 2,844 shares on 05/04/2026, with corresponding proceeds listed for each sale.

Are proceeds or cash‑flow recipients disclosed in the TWST excerpt?

Proceeds amounts are shown alongside each past sale (e.g., $200,571.88 for 02/23/2026), but the excerpt does not state who receives proceeds for the proposed 4,160 share sale or whether sales are issuer or holder led.

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

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Accepted by SEC EDGAR 05/21/2026 - 03:31 PM EDT Learn about SEC filing dates

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	0001755970
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	Finn Patrick John
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	4160	221547.45	62271314	05/21/2026	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	05/20/2026	Restricted Stock Vesting	Issuer			4160	05/20/2026	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
Patrick Finn 681 Gateway Blvd South San Francisco CA 94080	Common	02/23/2026	4294	200571.88
Patrick Finn 681 Gateway Blvd South San Francisco CA 94080	Common	04/23/2026	2321	141026.51
Patrick Finn 681 Gateway Blvd South San Francisco CA 94080	Common	05/04/2026	2844	162531.19

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	05/21/2026
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/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Patrick Finn.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)