Twist Bioscience Corporation (TWST) Form 4 Filings

Twist Bioscience director Katryn Blake reported a new stock grant. On February 5, 2026, she acquired 5,095 shares of common stock at $0 per share as an annual equity award. Following this grant, she beneficially owns 19,448 common shares, held directly.

The award vests 100% on the earlier of the one-year anniversary of the grant date or the first annual stockholder meeting after the grant, as long as she continues serving as a non-employee director on the applicable vesting date.

Twist Bioscience director Jan Johannessen reported an equity award and related share sale. On 02/05/2026, Johannessen received 5,095 shares of common stock at $0. These annual equity award shares vest in full on the earlier of one year from grant or the first annual stockholder meeting, if he continues as a service provider.

On 02/06/2026, he sold 2,200 shares at $47.9067 per share to cover tax liabilities from restricted stock unit vesting, pursuant to a prior election rather than a discretionary trade. After these transactions, he directly owned 17,754 common shares.

Twist Bioscience Corp's President and COO, Patrick John Finn, reported an automatic sale of common stock tied to equity compensation. On 02/03/2026, 2,705 shares of common stock were sold at $46.576 per share to cover tax withholding obligations from vesting restricted stock units. After this mandated "sell to cover" transaction under the company’s equity incentive plans, Finn beneficially owned 307,788 shares of Twist Bioscience common stock.

Twist Bioscience executive Dennis Cho reported a routine tax-related stock sale. On February 3, 2026, he sold 1,099 shares of Twist Bioscience common stock at $46.576 per share to cover tax withholding from vesting restricted stock units under the company’s equity plans.

After this mandated “sell to cover” transaction, Cho beneficially owned 143,581 shares of common stock in direct ownership. He serves as Senior Vice President, Chief Legal Officer & Corporate Secretary, and the filing notes these were not discretionary trades.

Twist Bioscience Corp’s Chief Executive Officer and director Emily M. Leproust reported an automatic sale of common stock tied to equity compensation. On February 3, 2026, she sold 5,001 shares of common stock at $46.576 per share in a transaction coded “S.”

The filing explains these shares were sold solely to cover tax withholding obligations arising from the vesting of restricted stock units under the company’s equity incentive plans, described as a mandatory “sell to cover” and not a discretionary trade. After this sale, Leproust beneficially owned 869,312 shares of Twist Bioscience common stock and continued to hold various employee stock options, including 64,950 performance stock options that vested after meeting performance criteria in December 2022.

Twist Bioscience Corp’s Chief Accounting Officer, Robert F. Werner, reported mandatory sales of common stock to cover taxes on vested restricted stock units. On February 3, 2026, he sold 175 shares at $46.576 per share. On February 4, 2026, he sold an additional 7,000 shares at a weighted average price of $45.648 per share, with actual sale prices ranging from $45.61 to $45.78. These "sell to cover" transactions were required under the company’s equity incentive plan and are described as non-discretionary. After these transactions, Werner directly owned 58,738 shares of Twist Bioscience common stock.

Twist Bioscience Corporation reported that SVP of Human Resources Paula Green sold 1,194 shares of common stock on February 3, 2026 at $46.576 per share. After this transaction, she directly holds 165,445 shares.

The sale was a mandatory “sell to cover” transaction to satisfy tax withholding owed on vesting restricted stock units, under the company’s equity incentive plan, and was not a discretionary trade by the executive.

Twist Bioscience Corp's President and COO, Patrick John Finn, reported a small mandatory share sale related to equity compensation. On 01/23/2026, he sold 2,390 shares of common stock at $44.908 per share. According to the disclosure, these shares were sold solely to cover tax withholding obligations arising from the vesting of Restricted Stock Units under the company's equity incentive plans and are described as non-discretionary trades. Following this transaction, he beneficially owned 310,493 shares of Twist Bioscience common stock directly.

Twist Bioscience Corp’s Chief Financial Officer, Adam Laponis, reported a planned sale of company stock. On 01/13/2026, he sold 3,000 shares of Twist Bioscience common stock at a price of $40 per share. This transaction was executed under a pre-arranged Rule 10b5-1 trading plan that he adopted on May 8, 2025, which is designed to allow insiders to sell shares according to a preset schedule. After this sale, Laponis directly beneficially owned 137,031 shares of Twist Bioscience common stock.

Twist Bioscience Corp President and COO Patrick John Finn reported an option exercise and share sale in the company’s stock. On January 13, 2026, he exercised a stock option for 3,279 shares of common stock at an exercise price of $8.82 per share and acquired those shares directly.

On the same date, he sold 23,279 shares of Twist Bioscience common stock at a price of $40 per share in an open-market transaction. After these transactions, Finn directly owned 312,883 shares of common stock. The filing notes that these transactions were carried out under a previously adopted Rule 10b5-1 trading plan put in place on May 13, 2025.

Twist Bioscience Corp's Chief Financial Officer, Adam Laponis, reported an automatic sale of common stock to cover taxes related to equity compensation. On January 9, 2026, he sold 2,738 shares of common stock at a price of $35.261 per share. According to the disclosure, these shares were sold to satisfy tax withholding obligations arising from the vesting of Restricted Stock Units under the company's equity incentive plans and were executed as mandatory "sell to cover" transactions rather than discretionary trades. After this sale, Laponis directly beneficially owned 140,031 shares of Twist Bioscience common stock.

Twist Bioscience Corp (TWST) reported an insider transaction by its Senior Vice President, Chief Legal Officer & Corporate Secretary. On 11/21/2025, the reporting person sold 757 shares of Twist Bioscience common stock at a price of $26.5035 per share. After this transaction, the insider beneficially owned 145,402 shares directly.

The company explains that these shares were sold solely to cover tax withholding obligations arising from the vesting of Restricted Stock Units. The sale was executed under the issuer’s equity incentive plan using a mandated “sell to cover” arrangement, meaning the transaction did not represent a discretionary trade or a change in the insider’s investment view.

Twist Bioscience Corp (TWST) reported an insider transaction by its President and COO on a Form 4. On 11/21/2025, the officer sold 1,776 shares of common stock at a price of $26.5035 per share. After this transaction, the officer beneficially owned 332,883 shares directly.

The company explains that these shares were sold solely to cover tax withholding obligations tied to the vesting of restricted stock units. The sale was mandated under the company’s equity incentive plans as a "sell to cover" transaction and is described as not a discretionary trade by the reporting person.

Twist Bioscience Corp (TWST) reported a small insider transaction by its Senior Vice President of Human Resources, Paula Green. On 11/21/2025, Green sold 598 shares of common stock at a price of $26.5035 per share. After this transaction, she beneficially owned 167,789 shares directly.

The company explains that the sale was made to cover tax withholding obligations triggered by the vesting of Restricted Stock Units. These transactions are described as mandated under Twist Bioscience’s equity incentive plans through a “sell to cover” election, meaning they are not discretionary trades initiated by the executive for portfolio reasons.

Twist Bioscience Corporation's Chief Financial Officer reported an automatic sale of company stock to cover taxes. On 11/21/2025, the reporting person sold 887 shares of common stock at a price of $26.5035 per share. The filing explains that these shares were sold under a mandatory "sell to cover" arrangement tied to the vesting of Restricted Stock Units, meaning the transaction was not a discretionary trade. After this tax-related sale, the officer beneficially owned 142,769 shares of Twist Bioscience common stock in direct ownership.

Twist Bioscience Corp (TWST) reported an insider transaction by its Chief Executive Officer and director, Emily M. Leproust. On 11/21/2025, she disposed of 2,663 shares of common stock at a price of $26.5035 per share in a sale coded "S." This sale was made to cover tax withholding obligations triggered by the vesting of restricted stock units, and is described as a mandatory "sell to cover" under the company’s equity incentive plans rather than a discretionary trade.

Following this transaction, Leproust beneficially owned 878,173 shares of common stock, held directly. She also holds several employee stock options with various exercise prices and vesting schedules, including performance stock options granted on September 1, 2020 that vested and became exercisable on December 19, 2022 after meeting specified performance criteria.

Twist Bioscience Corp (TWST) reported insider share sales by its Chief Accounting Officer. The reporting person sold 229 shares of common stock on 11/21/2025 at a price of $26.5035 per share and 822 shares on 11/24/2025 at a price of $28.7095 per share. After these transactions, the officer beneficially owned 66,143 shares of Twist Bioscience common stock in direct ownership.

According to the explanation, the 229 and 822 shares were sold to cover tax withholding obligations arising from the vesting of restricted stock units under the company’s equity incentive plans, and the sales did not represent discretionary trades by the officer.

Twist Bioscience Corp (TWST) reported a new equity award to its Chief Executive Officer and director, Emily M. Leproust. On 11/18/2025, she received 146,914 shares of common stock in the form of restricted stock units at a reported price of $0 per share, increasing her directly held beneficial ownership to 880,836 common shares.

The RSU grant vests over four years, with 1/16 of the total vesting on each quarterly anniversary of November 20, 2025, subject to continued service. The filing also lists multiple outstanding employee stock options, including options with exercise prices of $8.82, $26.66, $23.33, and $67.85, covering hundreds of thousands of shares with expiration dates between 2027 and 2030. Some older options at $5.95 now show zero remaining shares.

Twist Bioscience Corp (TWST) reported a routine insider equity grant to its President and COO, Patrick John Finn. On 11/18/2025, he received 68,740 shares of common stock in the form of restricted stock units (RSUs) at a price of $0 per share. Following this grant, he beneficially owned 334,659 shares of Twist Bioscience common stock in total.

The RSU award vests over four years, with 1/16 of the RSUs vesting on each quarterly anniversary of November 20, 2025, subject to his continued service. This structure ties a portion of the executive’s compensation to the company’s long-term performance and his ongoing role.

Twist Bioscience Corp (TWST) reported that its Chief Financial Officer received a grant of 32,648 restricted stock units (RSUs) of common stock on 11/18/2025. The RSUs were recorded at a price of $0 because they are equity awards rather than open‑market purchases.

Following this grant, the CFO beneficially owns 143,656 shares of Twist Bioscience common stock in total. The RSU award vests over four years: 1/16 of the total RSUs vest on each quarterly anniversary of November 20, 2025, for a total vesting period of 48 months, as long as the executive remains in continuous service through each vesting date.

Twist Bioscience Corp (TWST) officer Dennis Cho reported a grant of 25,465 restricted stock units (RSUs) of common stock at a price of $0 per share. After this equity award, he beneficially owns 146,159 shares of Twist Bioscience common stock in total.

The RSU award vests over four years, with 1/16 of the RSUs vesting on each quarterly anniversary of November 20, 2025, for a total vesting period of 48 months, subject to his continuous service with the company. Cho serves as Senior Vice President, Chief Legal Officer & Corporate Secretary, and this Form 4 reflects routine insider equity compensation.

Twist Bioscience Corp. (TWST) reported an equity award to a senior executive. Officer Paula Green, the company’s SVP of Human Resources, received 26,200 shares of common stock in the form of a restricted stock unit (RSU) grant on 11/18/2025 at a stated price of $0, reflecting a compensatory award rather than an open‑market purchase.

The RSUs vest over four years, with 1/16 of the total vesting on each quarterly anniversary of November 20, 2025, subject to her continued service through each vesting date. Following this grant, Paula Green beneficially owns 168,387 shares of Twist Bioscience common stock, held directly.

Twist Bioscience Corp (TWST) reported a Form 4 for its Chief Accounting Officer, Robert F. Werner. On 11/18/2025, he received 16,324 shares of common stock through a restricted stock unit (RSU) award at a price of $0 per share, reflecting stock-based compensation rather than a market purchase.

After this grant, Werner beneficially owns 67,194 shares of Twist Bioscience common stock in direct ownership. The RSU award vests over time: 1/16 of the RSUs vest on each quarterly anniversary of November 20, 2024, for a total vesting period of 48 months, contingent on his continued service with the company.

Twist Bioscience Corp (TWST) director Jan Johannessen reported a stock sale in a Form 4 filing. On 11/18/2025, the reporting person sold 7,044 shares of Twist Bioscience common stock at a price of $24.77 per share, coded as a sale transaction ("S"). After this transaction, the director beneficially owned 14,859 shares of common stock in the company, held directly. The filing is made as an individual filing by one reporting person and is signed by an attorney-in-fact on behalf of Jan Johannessen.

Twist Bioscience (TWST) insider Dennis Cho reported a sale of 1,019 shares of common stock at $32.0794 on 11/03/2025. According to the filing, this was a mandated “sell to cover” tied to the vesting of Restricted Stock Units to satisfy tax withholding obligations, not a discretionary trade. Following the transaction, Cho beneficially owns 120,694 shares, held directly. His role is listed as Senior Vice President, Chief Legal Officer & Corporate Secretary.

Twist Bioscience Corp (TWST) reported an insider transaction by President and COO Patrick John Finn. On 11/03/2025, he disposed of 2,755 shares of common stock at a price of $32.0794 per share.

The filing states these shares were sold to satisfy tax withholding obligations related to the vesting of Restricted Stock Units under the company’s equity incentive plans, a mandated “sell to cover” and not a discretionary trade by the reporting person. Following the transaction, he directly beneficially owned 265,919 shares.

Twist Bioscience (TWST) insider Paula Green, SVP of Human Resources, reported a transaction on 11/03/2025. She sold 1,084 shares of common stock at $32.0794 per share. According to the footnote, the sale was a mandated “sell to cover” to satisfy tax withholding upon the vesting of Restricted Stock Units and did not represent a discretionary trade. Following the transaction, she beneficially owns 142,187 shares directly.

Twist Bioscience (TWST) CEO and director Emily M. Leproust reported a Form 4 transaction: she sold 4,887 shares of common stock on 11/03/2025 at $32.0794 per share.

According to the footnote, the sale was a mandated “sell to cover” to satisfy tax withholding upon RSU vesting, and not a discretionary trade. Following the transaction, she beneficially owns 733,922 shares directly.

She also holds employee stock options, including 266,539 at $26.66 expiring 11/18/2028 and 150,879 at $8.82 expiring 09/28/2027.

Twist Bioscience (TWST) disclosed an insider transaction by its Chief Accounting Officer, Robert F. Werner. On 11/03/2025, he sold 160 shares of common stock at $32.0794 in a mandated sell-to-cover to satisfy tax withholding arising from the vesting of restricted stock units under the company’s equity plan. Following the transaction, his beneficial ownership stood at 50,870 shares.

Twist Bioscience (TWST) filed a Form 4 reporting an insider tax-related sale. On 10/30/2025, a company officer executed a mandated "sell-to-cover" of 6,515 shares of common stock at $31.4443 per share to satisfy tax withholding tied to the vesting of Performance Stock Units. The filing notes these were not discretionary trades.

Following the transaction, the reporting person directly owned 121,713 shares. The insider is identified as Senior Vice President, Chief Legal Officer & Corporate Secretary.

Twist Bioscience (TWST) reported an insider transaction by President and COO Patrick John Finn. On 10/30/2025, he sold 17,606 shares of common stock at $31.4443 per share, coded “S.” The filing states these shares were sold solely to cover tax withholding triggered by the vesting of Performance Stock Units under a mandated “sell to cover” election in the company’s equity plans, indicating they were not discretionary trades.

Following the transaction, Finn beneficially owns 268,674 shares, held directly.

Twist Bioscience (TWST) reported an insider transaction by its SVP of Human Resources, Paula Green. On 10/30/2025, she sold 6,920 shares of common stock (transaction code S) at $31.4443 per share. The filing states these shares were sold to satisfy tax withholding obligations from vesting Performance Stock Units via a mandated “sell to cover,” indicating they were not discretionary trades. Following the transaction, she beneficially owned 143,271 shares, held directly.

Twist Bioscience (TWST) CEO and director Emily M. Leproust reported a transaction on 10/30/2025: the disposition of 31,379 shares of common stock at $31.4443 per share. The filing states these shares were sold to cover tax withholding tied to the vesting of performance stock units, pursuant to the company’s equity plan “sell to cover” election, and were not discretionary trades.

Following the transaction, Leproust beneficially owns 738,809 common shares directly. Derivative holdings listed include employee stock options, such as 150,879 options at an exercise price of $8.82 and 266,539 options at $26.66, among others with varying vesting and expiration terms.

Twist Bioscience (TWST) reported an insider transaction by its Chief Financial Officer, Adam Laponis. On 10/30/2025, the CFO sold 5,517 shares of common stock at $31.4443 per share. According to the filing, these shares were sold to satisfy tax withholding obligations tied to the vesting of Performance Stock Units and were executed as a mandated “sell to cover,” not a discretionary trade.

Following the transaction, the reporting person beneficially owns 111,008 shares directly.

Twist Bioscience (TWST) insider transaction: the Chief Accounting Officer reported a sale of 1,016 shares of common stock on 10/30/2025 at a price of $31.4443 per share. The filing states the sale was a mandated “sell to cover” to satisfy tax withholding obligations tied to the vesting of Performance Stock Units, and not a discretionary trade. Following the transaction, the reporting person beneficially owned 51,030 shares, held directly.