TWST Form 4: Paula Green tax-related sale of 598 shares

Rhea-AI Filing Summary

Twist Bioscience Corp (TWST) reported a small insider transaction by its Senior Vice President of Human Resources, Paula Green. On 11/21/2025, Green sold 598 shares of common stock at a price of $26.5035 per share. After this transaction, she beneficially owned 167,789 shares directly.

The company explains that the sale was made to cover tax withholding obligations triggered by the vesting of Restricted Stock Units. These transactions are described as mandated under Twist Bioscience’s equity incentive plans through a “sell to cover” election, meaning they are not discretionary trades initiated by the executive for portfolio reasons.

Insider Trade Summary

Net Seller: 598 shares ($15,849)

Net Sell 1 txn

Insider Green Paula

Role SVP of Human Resources

Sold 598 shs ($16K)

Type	Security	Shares	Price	Value
Sale	Common Stock	598	$26.5035	$16K

Holdings After Transaction: Common Stock — 167,789 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Green Paula

(Last) (First) (Middle)

C/O TWIST BIOSCIENCE CORPORATION

681 GATEWAY BLVD.

(Street)

SOUTH SAN FRANCISCO CA 94080

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Twist Bioscience Corp [ TWST ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP of Human Resources

3. Date of Earliest Transaction (Month/Day/Year)
11/21/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/21/2025		S		598(1)	D	$26.5035	167,789	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units. These sales are mandated by the Issuer's election under its equity incentive plans to require the satisfaction of a tax withholding obligation to be funded by a "sell to cover" transaction and do not represent discretionary trades by the Reporting Person.

Remarks:

	/s/ Kendra Fox, as Attorney-in-Fact for Paula Green	11/25/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did TWST disclose for Paula Green?

The filing reports that Paula Green, SVP of Human Resources at Twist Bioscience, sold 598 shares of common stock on 11/21/2025.

At what price were the Twist Bioscience (TWST) shares sold in this Form 4?

The 598 shares of Twist Bioscience common stock were sold at a price of $26.5035 per share.

How many TWST shares does Paula Green own after this transaction?

Following the reported sale, Paula Green beneficially owned 167,789 shares of Twist Bioscience common stock directly.

Why did Paula Green sell TWST shares according to the Form 4?

The filing states the sale represents shares required to be sold to cover tax withholding obligations related to vested Restricted Stock Units under the company’s equity incentive plans.

Was the TWST insider sale a discretionary trade by Paula Green?

No. The document explains these sales are mandated “sell to cover” transactions under Twist Bioscience’s plans and do not represent discretionary trades by Paula Green.

What is Paula Green’s role at Twist Bioscience (TWST)?

Paula Green is identified as an Officer of Twist Bioscience, serving as SVP of Human Resources.

Is this TWST Form 4 filed by one reporting person or a group?

The Form 4 is indicated as being filed by one reporting person, namely Paula Green.