TWST insider to sell 31,348 shares worth $1.01M — Form 144

Form 144 notice shows an insider proposes to sell 31,348 shares of common stock, with an aggregate market value of $1,008,998.08, representing approximately 0.052% of the 60,360,925 shares outstanding.

Rhea-AI Filing Summary

Form 144 notice shows an insider proposes to sell 31,348 shares of common stock, with an aggregate market value of $1,008,998.08, representing approximately 0.052% of the 60,360,925 shares outstanding. The shares were acquired through restricted stock vesting on 10/01/2025 and the approximate sale date is 10/06/2025. The filing lists prior insider sales in the past three months totaling 12,746 shares for gross proceeds of $348,121.10, with individual sale dates between 08/04/2025 and 10/02/2025. The filer attests there is no undisclosed material adverse information and notes the securities were received as compensation.

Insights

Insider Transactions Analyst

TL;DR: Insider plans to sell a modest stake after restricted shares vested; recent sales have been small relative to outstanding stock.

The filing discloses a proposed sale of 31,348 shares valued at $1,008,998.08 with an approximate sale date of 10/06/2025. These shares were acquired via restricted stock vesting on 10/01/2025, and prior dispositions in the last three months totaled 12,746 shares for $348,121.10. As an insider sale notice under Rule 144, it documents a compliant, scheduled disposition following vesting and does not itself disclose operational changes.

The transaction size is small relative to total shares outstanding (0.052%), which reduces direct dilution or control concerns. Key things to watch in the near term are whether additional Form 4 or Form 144 filings appear and whether the insider shifts to larger, unscheduled sales over the next 90 days.

FAQ

What does the TWST Form 144 disclose?

It discloses a proposed sale of 31,348 common shares valued at $1,008,998.08, acquired by restricted stock vesting on 10/01/2025, with an approximate sale date of 10/06/2025.

Who is the seller named in the filing for TWST?

The filing lists sales by Emily M. Leproust and the current notice references a person for whose account the 31,348 shares are to be sold.

How many shares were sold by the insider in the prior three months?

Insider sales in the prior three months totaled 12,746 shares, generating gross proceeds of $348,121.10.

What was the acquisition method for the 31,348 shares?

The shares were acquired through restricted stock vesting on 10/01/2025 and payment was recorded as compensation.

How material is the proposed sale relative to TWST outstanding shares?

The proposed sale represents approximately 0.052% of the 60,360,925 shares outstanding, a relatively small proportion.

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

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Accepted by SEC EDGAR 10/06/2025 - 05:15 PM 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	0001753655
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	Leproust Emily M.
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
Relationship to Issuer	Director

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	31348	1008998.08	60360925	10/06/2025	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	10/01/2025	Restricted Stock Vesting	Issuer			31348	10/01/2025	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
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/04/2025	5585	158413.50
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	08/21/2025	2716	70518.77
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	09/08/2025	2265	58346.17
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	09/22/2025	1704	46962.07
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	10/02/2025	476	13880.59

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	10/06/2025
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/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Emily M. Leproust
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)