STOCK TITAN

Twist Bioscience (TWST) HR SVP sells 1,133 shares in tax withholding trade

(Neutral)
(Negative)
Form Type
4

Rhea-AI Filing Summary

On August 3, 2026, Paula Green, SVP of Human Resources at Twist Bioscience Corp, sold 1,133 shares of common stock at an average price of $85.3212 per share.

A footnote states these shares were sold under a mandated "sell to cover" arrangement to satisfy tax withholding on vesting Restricted Stock Units and did not represent discretionary trades. Following the sale, she directly holds 119,281 shares.

Positive

  • None.

Negative

  • None.
Insider Green Paula
Role SVP of Human Resources
Sold 1,133 shs ($97K)
Type Security Shares Price Value
Sale Common Stock F1 1,133 $85.3212 $97K
Holdings After Transaction: Common Stock — 119,281 shares (Direct)
Footnotes (1)
  1. F1. 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.
Shares sold 1,133 shares Common stock sold on 2026-08-03 in a tax-related transaction
Average sale price $85.3212 per share Price for the 1,133 shares of common stock sold on 2026-08-03
Shares held after transaction 119,281 shares Directly owned common shares following the August 3, 2026 sale
Restricted Stock Units financial
"tax withholding obligations in connection with the vesting of Restricted Stock Units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
sell to cover financial
"funded by a "sell to cover" transaction and do not represent discretionary trades"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
equity incentive plans financial
"mandated by the Issuer's election under its equity incentive plans to require"
Equity incentive plans are company programs that pay employees, executives, or directors with company stock, stock options, or share units instead of or in addition to cash, aiming to align their interests with shareholders—like giving team members a stake in the house they help build. For investors this matters because such plans can motivate better company performance but also dilute existing ownership and increase reported compensation costs, so they affect future earnings, voting power, and share value.
tax withholding obligations financial
"shares required to be sold by the Reporting Person to cover tax withholding obligations"

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Learn about SEC filing dates

FAQ

What insider transaction did Twist Bioscience (TWST) report for Paula Green?

Twist Bioscience reported that Paula Green, SVP of Human Resources, sold 1,133 shares of common stock at $85.3212 per share on August 3, 2026. The sale was tied to tax withholding on vesting Restricted Stock Units under a mandated "sell to cover" arrangement.

Why were 1,133 Twist Bioscience (TWST) shares sold by Paula Green?

The 1,133 shares sold by Paula Green were required to cover tax withholding obligations related to the vesting of Restricted Stock Units. A footnote explains these "sell to cover" transactions are mandated by the company’s equity incentive plans and are not discretionary trades by her.

How many Twist Bioscience (TWST) shares does Paula Green hold after this transaction?

After the August 3, 2026 transaction, Paula Green directly holds 119,281 shares of Twist Bioscience common stock. This figure is reported as her total direct ownership following the tax-related sale of 1,133 shares used to satisfy withholding obligations on RSU vesting.

Was Paula Green’s Twist Bioscience (TWST) share sale a discretionary trade?

No. A footnote states the sale of 1,133 shares was required to fund tax withholding via a "sell to cover" transaction under Twist Bioscience’s equity incentive plans. It explicitly notes these sales do not represent discretionary trades by Paula Green.

Is Paula Green’s Twist Bioscience (TWST) sale under a Rule 10b5-1 trading plan?

The Rule 10b5-1 checkbox is not marked, and the footnote instead describes the sale as a mandatory "sell to cover" tax-withholding transaction. The filing characterizes these sales as required by the company’s equity incentive plans, rather than discretionary planned trading.
SEC Form 4
FORM 4UNITED 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 CALIFORNIA 94080

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Twist Bioscience Corp [ TWST ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP of Human Resources
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock08/03/2026S1,133(1)D$85.3212119,281D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 Green08/05/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)