Twist Bioscience insider sell-to-cover: Emily Leproust disposes 2,265 shares
Rhea-AI Filing Summary
Emily M. Leproust, CEO and Director of Twist Bioscience (TWST), reported a routine insider transaction. The filing shows a sale of 2,265 shares of Twist common stock on 09/08/2025 at $25.76 per share to satisfy tax withholding obligations arising from the vesting of restricted stock units; these sales were mandated by the issuer's sell-to-cover election and are not discretionary trades. After the sale, the reporting person beneficially owns 634,740 shares. The form also lists outstanding employee stock options at various exercise prices and vesting schedules, including exercisable options with a $67.85 strike covering 64,950 shares.
Positive
- None.
Negative
- None.
Insights
TL;DR: Routine sell-to-cover tax withholding; no discretionary insider selling indicated.
The Form 4 documents a mandated sell-to-cover of 2,265 shares at $25.76 to satisfy tax obligations from RSU vesting, which is standard administrative practice and not indicative of a voluntary liquidity event. The reporting person retains a substantial ownership position of 634,740 shares. Listed employee stock options span multiple strikes and vesting schedules, with 64,950 shares currently exercisable under a $67.85 option. Overall, the filing appears immaterial to the company’s operating outlook.
TL;DR: Disclosure aligns with standard equity plan mechanics and internal governance controls.
The submission identifies the reporting person as both CEO and a director and discloses a mandated sell-to-cover transaction tied to plan elections, which is consistent with common equity compensation governance. The form includes clear descriptions of option strike prices, vesting histories, and the nature of the tax-driven disposition, supporting transparency and compliance with Section 16 reporting requirements.
Insider Trade Summary
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 2,265 | $25.76 | $58K |
| holding | Employee Stock Option (right to buy) | -- | -- | -- |
| holding | Employee Stock Option (right to buy) | -- | -- | -- |
| holding | Employee Stock Option (right to buy) | -- | -- | -- |
| holding | Employee Stock Option (right to buy) | -- | -- | -- |
| holding | Employee Stock Option (right to buy) | -- | -- | -- |
Footnotes (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. The 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. The 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. 20% 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. 25% 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. Represents 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.
