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Form 4 Twist Bioscience Corp For: Aug 18 Filed by: Finn Patrick John

August 20, 2026 4:05 PM
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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person *
Finn Patrick John
(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)
President and COO
3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026
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 08/18/2026 M (1) 23,355 A $ 67.85 293,033 D
Common Stock 08/18/2026 S (1) 33,354 (2) D $ 115.899 259,679 D
Common Stock 08/18/2026 S (1) 10,420 (3) D $ 116.8202 249,259 D
Common Stock 08/18/2026 S (1) 8,868 (4) D $ 117.697 240,391 D
Common Stock 08/18/2026 S (1) 4,500 (5) D $ 119.04 235,891 D
Common Stock 08/18/2026 S (1) 12,917 (6) D $ 119.858 222,974 D
Common Stock 08/18/2026 S (1) 6,296 (7) D $ 121.007 216,678 D
Common Stock 08/18/2026 S (1) 2,000 (8) D $ 122.581 214,678 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
Stock Option (right to buy) $ 67.85 08/18/2026 M (1) 23,355 (9) 08/31/2030 Common Stock 23,355 $ 0 0 D
Explanation of Responses:
1. The transactions reported on this Form 4 were affected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on May 18, 2026.
2. Represents the weighted average sales price per share. The shares sold at prices ranging from $115.35 to $116.33 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
3. Represents the weighted average sales price per share. The shares sold at prices ranging from $116.37 to $117.36 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
4. Represents the weighted average sales price per share. The shares sold at prices ranging from $117.37to $118.19 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
5. Represents the weighted average sales price per share. The shares sold at prices ranging from $118.505 to $119.45 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
6. Represents the weighted average sales price per share. The shares sold at prices ranging from $119.515 to $120.2 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
7. Represents the weighted average sales price per share. The shares sold at prices ranging from $120.585 to $121.53 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
8. Represents the weighted average sales price per share. The shares sold at prices ranging from $122.00 to $122.815 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.
9. The option was 100% exercisable on December 19, 2022.
/s/ Kendra Fox, as Attorney-in-Fact for Patrick John Finn 08/20/2026
** 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.

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