Emily Leproust sells TWST shares in multiple 2026 transactions (TWST)

Rhea-AI Filing Summary

Twist Bioscience Corporation reported insider resale activity via Form 144 indicating sales of common stock by Emily M. Leproust on multiple dates in 2026. The filing lists individual block dispositions with cash proceeds for each sale and notes an option-related sale dated 05/28/2026 tied to an option granted 09/29/2017.

Insights

Corporate Governance Analyst

Routine executive resale across multiple dates; no new governance action.

The filing lists multiple open-market or block dispositions by Emily M. Leproust, showing individual sale dates and gross cash amounts per line. These entries are standard resale disclosures required under applicable rules when insider sales exceed certain thresholds.

Cash‑flow treatment and any broker or plan details are not shown in the excerpt; subsequent filings or broker confirmations would clarify whether sales were pursuant to a Rule 10b5‑1 plan or other arrangement.

Key Figures

Sale on 05/26/2026: 24,282 shares Proceeds on 05/26/2026: $1,580,245.85 Sale on 05/27/2026: 25,017 shares +3 more

6 metrics

Sale on 05/26/2026 24,282 shares block disposition reported on 05/26/2026

Proceeds on 05/26/2026 $1,580,245.85 gross proceeds for 24,282 shares on 05/26/2026

Sale on 05/27/2026 25,017 shares block disposition reported on 05/27/2026

Proceeds on 05/27/2026 $165,407.46 gross proceeds for 25,017 shares on 05/27/2026

Earlier sale on 03/06/2026 2,423 shares block disposition reported on 03/06/2026

Aggregate example proceeds (single lines) $526,289.75 proceeds reported for 8,061 shares on 04/22/2026

Key Terms

Form 144, Option Granted - 09/29/2017, Cash

3 terms

Form 144 regulatory

"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.

Option Granted - 09/29/2017 financial

"Securities To Be Sold line referencing option grant date"

Cash financial

"Securities To Be Sold entry ends with 'Cash' indicating proceeds type"

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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

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	16470	1118555.16	62271314	05/28/2026	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	05/28/2026	Option Granted - 09/29/2017	Issuer			16470	05/28/2026	Cash

* 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	03/06/2026	2423	112490.68
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	03/20/2026	1742	76275.91
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	04/21/2026	1610	104664.97
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	04/22/2026	8061	526289.75
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/04/2026	5127	293001.90
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/21/2026	6888	366831.46
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/26/2026	24282	1580245.85
Emily M. Leproust 681 Gateway Blvd South San Francisco CA 94080	Common	05/27/2026	25017	165407.46

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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 did TWST disclose in this Form 144 filing?

The filing discloses multiple sales of common stock by Emily M. Leproust on specific 2026 dates, each showing the number of shares and gross proceeds for each block.

How many shares did Emily M. Leproust sell on 05/26/2026 for TWST?

On 05/26/2026 the filing shows a sale of 24,282 shares with gross proceeds of $1,580,245.85 as reported in the excerpt.

Does the Form 144 show the origin of the sold shares for TWST?

The excerpt indicates one line tied to an option granted 09/29/2017 and lists sales as cash transactions; further origin details are not provided in the excerpt.

Are the proceeds from these TWST sales disclosed?

Yes; each reported sale line in the excerpt includes a gross cash amount, for example $1,580,245.85 for 24,282 shares on 05/26/2026.

Does the filing state whether sales were under a trading plan for TWST?

The provided excerpt does not state that the sales were made pursuant to a Rule 10b5‑1 trading plan or similar arrangement.