ENTA · Enanta Pharmaceuticals Inc

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (March 11, 2026), with the final monthly installment vesting no later than the nearest trading day on the Nasdaq Global Select Market preceding the 2027 annual meeting of stockholders.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents the number of shares of common stock automatically forfeited by the reporting person to cover withholding taxes due as a result of settlement of the PSU and rTSRU awards.

Represents shares of Enanta common stock issued under performance share units ("PSUs") that vested as a result of performance against two-year research and development milestones in the calendar 2024-2025 period as determined by the Compensation Committee of Enanta's Board of Directors, and then settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award that was subject to performance-vesting restrictions based on the relative total stockholder return of Enanta's common stock in relation to the total stockholder return of the component companies in the Nasdaq Biotech Index over the same 60-day calendar periods two years apart. The performance level was determined by the Compensation Committee of Enanta's Board of Directors and the rTSRU settled with the issuance of the shares of Enanta common stock on February 12, 2026.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit awards granted on November 23, 2022 and November 22, 2023, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit awards granted on November 23, 2022 and November 22, 2023, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 23, 2022, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $13.89 to $14.46, inclusive. The reporting person undertakes to provide to Enanta Pharmaceuticals, Inc., any security holder of Enanta Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 27, 2024, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

Represents shares sold by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 27, 2024, as required pursuant to the terms of the award. The sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary transaction by the reporting person.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on November 19, 2021.

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Represents a grant of restricted stock units ("RSUs") under the Enanta Pharmaceuticals, Inc. ("Enanta") 2019 Equity Incentive Plan. Each RSU represents the contingent right to receive, upon vesting of the unit, one share of Enanta common stock. The RSUs will vest and settle with respect to 25% of the award on December 1, 2026 and in substantially equal annual installments over the next three anniversaries thereafter.

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Such option will become exercisable (subject to the optionholder's continued employment) quarterly in substantially equal installments (any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding quarterly period in which a whole share equivalent is accumulated) over four years from the date of grant (November 25, 2025).

Represents a grant of restricted stock units ("RSUs") under the Enanta Pharmaceuticals, Inc. ("Enanta") 2019 Equity Incentive Plan. Each RSU represents the contingent right to receive, upon vesting of the unit, one share of Enanta common stock. The RSUs will vest and settle with respect to 25% of the award on December 1, 2026 and in substantially equal annual installments over the next three anniversaries thereafter.

Represents the number of shares of ENTA common stock forfeited by the reporting person to cover withholding taxes due as a result of settlement of a portion of the restricted stock unit award granted on August 8, 2022.