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[Form 4] ENANTA PHARMACEUTICALS INC Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Enanta Pharmaceuticals (ENTA) reported a new equity award to an executive officer. The filing shows the Chief Product Strategy Officer received a stock option to buy 100,000 shares of Enanta common stock at an exercise price of $13.66 per share, granted on November 25, 2025.

The option becomes exercisable in substantially equal quarterly installments over four years from the grant date, with any fractional shares carried forward to the next period, and expires on November 25, 2035. Following this grant, the reporting person beneficially owns 100,000 derivative securities directly in the form of this stock option.

Positive

  • None.

Negative

  • None.
SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Kieffer Tara Lynn

(Last) (First) (Middle)
C/O ENANTA PHARMACEUTICALS, INC.
4 KINGSBURY AVENUE

(Street)
WATERTOWN MA 02472

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
ENANTA PHARMACEUTICALS INC [ ENTA ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Product Strategy Officer
3. Date of Earliest Transaction (Month/Day/Year)
11/25/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy) $13.66 11/25/2025 A 100,000 (1) 11/25/2035 Common Stock 100,000 $0.00 100,000 D
Explanation of Responses:
1. 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).
/s/ Matthew Kowalsky as attorney-in-fact 11/26/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
Enanta Pharmaceuticals Inc

NASDAQ:ENTA

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ENTA Stock Data

402.34M
27.41M
6.63%
86.53%
13.26%
Biotechnology
Pharmaceutical Preparations
Link
United States
WATERTOWN