SEC Form 4 · accession 0001214659-26-007800
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
Jun 25, 2026
Accepted (ET)
Jun 26, 2026 · 4:41 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 Stock | Jun 25, 2026 | S | 18,880 | $95.00 | D | 824,039 | 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)F2 | $5.95 | holding | — | — | — | — | Sep 28, 2025 | Common Stock | 0 | 0 | D |
| Employee Stock Option (right to buy)F3 | $26.66 | holding | — | — | — | — | Nov 18, 2028 | Common Stock | 0 | 266,539 | D |
| Employee Stock Option (right to buy)F4 | $23.33 | holding | — | — | — | — | Oct 23, 2029 | Common Stock | 0 | 131,290 | D |
| Employee Stock Option (right to buy)F5 | $67.85 | holding | — | — | — | Dec 19, 2022 | Aug 31, 2030 | Common Stock | 64,950 | 64,950 | D |
| Employee Stock Option (right to buy)F6 | $8.82 | holding | — | — | — | — | Sep 28, 2027 | Common Stock | 16,470 | 75,439 | 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 May 27, 2025.
- F2The option is immediately exercisable. 25% of the shares subject to the option vested on September 1, 2016 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.
- F320% of the shares subject to the option vested and became exercisable on October 31, 2019 and 1/60th of the shares subject to the option vest and become exercisable on each monthly anniversary thereafter, subject to the Reporting Person's continuous service through each vesting date.
- F425% 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.
- F5Represents 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.
- F6The option is immediately exercisable. 10% of the shares subject to the option vested on September 28, 2017, 15% of the shares subject to the option vested on September 28, 2018, 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.