ENTA

SEC source: 0001177648-20-000057 · edgar.xml · derivative · entry 3

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,625 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

F4 · derivative.exercise_date: On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife. 2,625 restricted stock units have previously vested and the remainder vested on November 18, 2020.

F4 · derivative.expiration_date: On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 of the restricted stock units were transferred to the reporting person's ex-wife pursuant to a domestic relations order and the reporting person no longer reports as beneficially owned any securities owned by his ex-wife. 2,625 restricted stock units have previously vested and the remainder vested on November 18, 2020.

SEC source: 0001177648-20-000057 · edgar.xml · nonDerivative · entry 2

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,759

F3 · shares: 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 the restricted stock unit award.

SEC source: 0001177648-20-000057 · edgar.xml · nonDerivative · entry 1

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,529

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of ENTA common stock subject to a restricted stock unit award granted on November 18, 2016 that vested on November 18, 2020. The settlement and issuance of the shares was subject to continued employment and occurred on December 15, 2020.

F2 · price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

SEC source: 0001177648-20-000053 · edgar.xml · derivative · entry 3

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,250 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

F4 · derivative.exercise_date: On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 restricted stock units have previously vested and the remainder vested on November 18, 2020.

F4 · derivative.expiration_date: On November 18, 2016, the reporting person was granted 10,500 restricted stock units. 5,250 restricted stock units have previously vested and the remainder vested on November 18, 2020.

SEC source: 0001177648-20-000053 · edgar.xml · nonDerivative · entry 2

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 317,225

F3 · shares: 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 the restricted stock unit award.

SEC source: 0001177648-20-000053 · edgar.xml · nonDerivative · entry 1

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 318,765

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of ENTA common stock subject to a restricted stock unit award granted on November 18, 2016 that vested on November 18, 2020. The settlement and issuance of the shares was subject to continued employment and occurred on December 15, 2020.

F2 · price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

SEC source: 0001177648-20-000051 · edgar.xml · derivative · entry 3

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

F4 · derivative.exercise_date: On November 18, 2016, the reporting person was granted 15,000 restricted stock units. 7,500 restricted stock units have previously vested and the remainder vested on November 18, 2020.

F4 · derivative.expiration_date: On November 18, 2016, the reporting person was granted 15,000 restricted stock units. 7,500 restricted stock units have previously vested and the remainder vested on November 18, 2020.

SEC source: 0001177648-20-000051 · edgar.xml · nonDerivative · entry 2

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 681,488

F3 · shares: 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 the restricted stock unit award.

SEC source: 0001177648-20-000051 · edgar.xml · nonDerivative · entry 1

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 683,689

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Represents shares of ENTA common stock subject to a restricted stock unit award granted on November 18, 2016 that vested on November 18, 2020. The settlement and issuance of the shares was subject to continued employment and occurred on December 15, 2020.

F2 · price: Restricted stock units convert into ENTA common stock on a one-for-one basis.

SEC source: 0001177648-20-000049 · edgar.xml · derivative · entry 1

Kieffer Tara Lynn · CIK 0001834835 · Sr. VP, New Product Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,000

Underlying: Common Stock · 65,000 shares

Expires 2030-12-07

F1 · derivative.exercise_date: Twenty-five percent (25%) of such option will become exercisable on December 7, 2021 (the "Anniversary Date"), with the remainder to become exercisable 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 three years from the Anniversary Date (in each case subject to the optionholder's continued employment).

SEC source: 0001177648-20-000045 · edgar.xml · derivative · entry 3

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,667

Underlying: Common Stock · 1,667 shares

Expires 2026-11-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: 100% of the shares subject to the option are fully vested and exercisable.

SEC source: 0001177648-20-000045 · edgar.xml · nonDerivative · entry 1

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,538

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001177648-20-000043 · edgar.xml · derivative · entry 3

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,800

Underlying: Common Stock · 30,800 shares

Expires 2030-11-20

F3 · derivative.exercise_date: 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 20, 2020).

SEC source: 0001177648-20-000043 · edgar.xml · nonDerivative · entry 1

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,871

F1 · kind: 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 vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements.

SEC source: 0001177648-20-000041 · edgar.xml · derivative · entry 2

Adda Nathalie · CIK 0001646976 · Sr. VP & Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,800

Underlying: Common Stock · 30,800 shares

Expires 2030-11-20

F2 · derivative.exercise_date: 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 20, 2020).

SEC source: 0001177648-20-000041 · edgar.xml · nonDerivative · entry 1

Adda Nathalie · CIK 0001646976 · Sr. VP & Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,234

F1 · kind: 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 vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements.

SEC source: 0001177648-20-000039 · edgar.xml · derivative · entry 2

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,800

Underlying: Common Stock · 30,800 shares

Expires 2030-11-20

F2 · derivative.exercise_date: 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 20, 2020).

SEC source: 0001177648-20-000039 · edgar.xml · nonDerivative · entry 1

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 313,515

F1 · kind: 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 vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements.

SEC source: 0001177648-20-000037 · edgar.xml · derivative · entry 2

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,800

Underlying: Common Stock · 30,800 shares

Expires 2030-11-20

F2 · derivative.exercise_date: 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 20, 2020).

SEC source: 0001177648-20-000037 · edgar.xml · nonDerivative · entry 1

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,904

F1 · kind: 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 vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements.

SEC source: 0001177648-20-000035 · edgar.xml · derivative · entry 2

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,800

Underlying: Common Stock · 107,800 shares

Expires 2030-11-20

F2 · derivative.exercise_date: 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 20, 2020).

SEC source: 0001177648-20-000035 · edgar.xml · nonDerivative · entry 1

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 676,189

F1 · kind: 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 vest in equal annual installments over four years from the date of grant (November 20, 2020). The restricted stock unit shares that vest will be issued on the first December 1 after the applicable vesting date, subject to withholding of a portion of the vested shares to satisfy tax withholding requirements.

SEC source: 0001177648-20-000033 · edgar.xml · derivative · entry 2

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,480 shares

Expires 2021-04-15

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 100% of the shares subject to the option are fully vested and exercisable.

SEC source: 0001177648-20-000033 · edgar.xml · nonDerivative · entry 1

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,304

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001177648-20-000031 · edgar.xml · derivative · entry 3

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,334

Underlying: Common Stock · 1,666 shares

Expires 2026-11-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option to purchase a total of 25,000 shares of common stock became or 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 18, 2016).

SEC source: 0001177648-20-000031 · edgar.xml · nonDerivative · entry 1

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,271

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001177648-20-000029 · edgar.xml · derivative · entry 1

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,000

Underlying: Common Stock · 17,000 shares

Expires 2030-06-29

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over three years, beginning from the date of grant (June 29, 2020).

SEC source: 0001177648-20-000024 · edgar.xml · derivative · entry 2

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,740 shares

Expires 2020-05-25

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: 100% of the shares subject to the option are fully vested and exercisable.

F2 · balance_after: The reporting person transferred one half of all options held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse.

SEC source: 0001177648-20-000024 · edgar.xml · nonDerivative · entry 1

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,824

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001177648-20-000022 · edgar.xml · derivative · entry 3

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,000

Underlying: Common Stock · 3,000 shares

Expires 2026-11-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option to purchase a total of 25,000 shares of common stock became or 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 18, 2016).

SEC source: 0001177648-20-000022 · edgar.xml · nonDerivative · entry 1

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,605

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001177648-20-000020 · edgar.xml · derivative · entry 1

Vance Terry · CIK 0001572282 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-02-26

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (February 26, 2020), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2021 annual meeting of stockholders.

SEC source: 0001177648-20-000018 · edgar.xml · derivative · entry 1

Russell Lesley · CIK 0001374636 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-02-26

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (February 26, 2020), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2021 annual meeting of stockholders.

SEC source: 0001177648-20-000016 · edgar.xml · derivative · entry 1

Peterson Kristine · CIK 0001508596 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-02-26

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (February 26, 2020), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2021 annual meeting of stockholders.

SEC source: 0001177648-20-000014 · edgar.xml · derivative · entry 1

Golumbeski George · CIK 0001586660 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-02-26

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (February 26, 2020), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2021 annual meeting of stockholders.

SEC source: 0001177648-20-000012 · edgar.xml · derivative · entry 1

CARTER BRUCE L A · CIK 0001225503 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2030-02-26

F1 · derivative.exercise_date: Such option will become exercisable monthly in substantially equal installments over one year, beginning from the date of grant (February 26, 2020), with the final monthly installment vesting on the nearest trading day on the Nasdaq Global Select Market preceding the 2021 annual meeting of stockholders.

SEC source: 0001177648-20-000007 · edgar.xml · nonDerivative · entry 3

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,084

F3 · shares: 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.

F4 · balance_after: The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse.

SEC source: 0001177648-20-000007 · edgar.xml · nonDerivative · entry 2

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,629

F2 · shares: Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award granted to the reporting person on March 1, 2018 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 a two-year period. 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, 2020.

F4 · balance_after: The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse.

SEC source: 0001177648-20-000007 · edgar.xml · nonDerivative · entry 1

MELLETT PAUL J · CIK 0001185034 · Treasurer and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,279

F1 · shares: Represents shares of Enanta common stock issued under a performance share unit ("PSU") award granted on March 1, 2018 that vested as a result of the achievement of a research and development milestone in calendar 2019 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, 2020.

F4 · balance_after: The reporting person transferred one half of all PSU awards and rTSRU awards held by the reporting person on September 30, 2019 to his former spouse pursuant to a domestic relations order. The reporting person no longer reports as beneficially owned any securities owned by his former spouse.

SEC source: 0001177648-20-000010 · edgar.xml · nonDerivative · entry 3

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,605

F3 · shares: 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.

SEC source: 0001177648-20-000010 · edgar.xml · nonDerivative · entry 2

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,545

F2 · shares: Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award granted to the reporting person on March 1, 2018 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 a two-year period. 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, 2020.

SEC source: 0001177648-20-000010 · edgar.xml · nonDerivative · entry 1

Gardiner Nathaniel S. · CIK 0001607643 · Sr. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,070

F1 · shares: Represents shares of Enanta common stock issued under a performance share unit ("PSU") award granted on March 1, 2018 that vested as a result of the achievement of a research and development milestone in calendar 2019 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, 2020.

SEC source: 0001177648-20-000009 · edgar.xml · nonDerivative · entry 3

Adda Nathalie · CIK 0001646976 · Sr. VP & Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,634

F3 · shares: 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.

SEC source: 0001177648-20-000009 · edgar.xml · nonDerivative · entry 2

Adda Nathalie · CIK 0001646976 · Sr. VP & Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,725

F2 · shares: Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award granted to the reporting person on March 1, 2018 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 a two-year period. 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, 2020.

SEC source: 0001177648-20-000009 · edgar.xml · nonDerivative · entry 1

Adda Nathalie · CIK 0001646976 · Sr. VP & Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,800

F1 · shares: Represents shares of Enanta common stock issued under a performance share unit ("PSU") award granted on March 1, 2018 that vested as a result of the achievement of a research and development milestone in calendar 2019 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, 2020.

SEC source: 0001177648-20-000008 · edgar.xml · nonDerivative · entry 3

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 305,915

F3 · shares: 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.

SEC source: 0001177648-20-000008 · edgar.xml · nonDerivative · entry 2

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 307,004

F2 · shares: Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award granted to the reporting person on March 1, 2018 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 a two-year period. 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, 2020.

SEC source: 0001177648-20-000008 · edgar.xml · nonDerivative · entry 1

Or Yat Sun · CIK 0001571212 · Sr. VP & CSO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 304,079

F1 · shares: Represents shares of Enanta common stock issued under a performance share unit ("PSU") award granted on March 1, 2018 that vested as a result of the achievement of a research and development milestone in calendar 2019 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, 2020.

SEC source: 0001177648-20-000006 · edgar.xml · nonDerivative · entry 3

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 649,689

F3 · shares: 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.

SEC source: 0001177648-20-000006 · edgar.xml · nonDerivative · entry 2

Luly Jay R. · CIK 0001571211 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 652,811

F2 · shares: Represents shares of Enanta common stock issued under a relative total stockholder return unit ("rTSRU") award granted to the reporting person on March 1, 2018 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 a two-year period. 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, 2020.