SEC Form 4 · accession 0001214659-26-011980
Twist Bioscience Corp · TWST
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Emily M. Leproust
Officer — Chief Executive Officer · Director
Period of report
Sep 24, 2026
Accepted (ET)
Sep 25, 2026 · 4:05 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001581280
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF2 | Sep 24, 2026 | S | 2,485 | $175.2313 | D | 616,417 | D | |
| Common StockF3 | Sep 24, 2026 | S | 945 | $176.3917 | D | 615,472 | D | |
| Common StockF4 | Sep 24, 2026 | S | 164 | $177.1699 | D | 615,308 | D | |
| Common StockF5 | Sep 24, 2026 | S | 330 | $178.6683 | D | 614,978 | D | |
| Common StockF6 | Sep 24, 2026 | S | 143 | $179.9331 | D | 614,835 | D | |
| Common StockF7 | Sep 24, 2026 | S | 515 | $180.3911 | D | 614,320 | D | |
| Common StockF8 | Sep 24, 2026 | S | 21 | $181.4519 | D | 614,299 | D | |
| Common StockF9 | Sep 24, 2026 | S | 16 | $182.50 | D | 614,283 | D | |
| Common StockF10 | Sep 24, 2026 | S | 501 | $183.7641 | D | 613,782 | D | |
| Common StockF11 | Sep 24, 2026 | S | 83 | $184.603 | D | 613,699 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Employee Stock Option (right to buy)F12 | $23.33 | holding | — | — | — | — | Oct 23, 2029 | Common Stock | 131,290 | 131,290 | D |
| Employee Stock Option (right to buy)F13 | $67.85 | holding | — | — | — | Dec 19, 2022 | Aug 31, 2030 | Common Stock | 64,950 | 64,950 | D |
Explanation of responses
- F1The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person on June 15, 2026.
- F10Represents the weighted average sales price per share. The shares sold at prices ranging from $183.28 to $184.25 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.
- F11Represents the weighted average sales price per share. The shares sold at prices ranging from $184.33 to $184.96 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.
- F1225% of the shares subject to the option vested on October 24, 2020, and 1/48th of the shares subject to the option vest on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.
- F13Represents performance stock options granted to the reporting person on September 1, 2020, that vested and became exercisable on December 19, 2022 as a result of the reporting person having met the applicable performance criteria.
- F2Represents the weighted average sales price per share. The shares sold at prices ranging from $175 to $175.99 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.
- F3Represents the weighted average sales price per share. The shares sold at prices ranging from $176 to $176.99 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.
- F4Represents the weighted average sales price per share. The shares sold at prices ranging from $177.05 to $177.4 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.
- F5Represents the weighted average sales price per share. The shares sold at prices ranging from $178.1 to $179 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.
- F6Represents the weighted average sales price per share. The shares sold at prices ranging from $179.23 to $180.21 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.
- F7Represents the weighted average sales price per share. The shares sold at prices ranging from $180.23 to $181.13 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.
- F8Represents the weighted average sales price per share. The shares sold at prices ranging from $181.23 to $181.61 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.
- F9Represents the weighted average sales price per share. The shares sold at prices ranging from $182.25 to $183.03 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.