Form 4: ENTA Chief Medical Officer forfeits 2,217 shares for tax withholding

Rhea-AI Filing Summary

Scott T. Rottinghaus, identified in this filing as Chief Medical Officer of Enanta Pharmaceuticals (ENTA), reported a non-sale equity transaction dated 08/08/2025 in which 2,217 shares of ENTA common stock were forfeited to satisfy withholding taxes arising from the settlement of a portion of a restricted stock unit award granted on August 8, 2022. The filing lists a per-share amount of $6.99 associated with the transaction. Following the withholding forfeiture, the reporting person beneficially owns 22,590 shares of common stock directly. The Form 4 entry indicates this was an internal tax-withholding action rather than an open-market disposition and was executed by an attorney-in-fact on behalf of the reporting person.

Insights

Securities Analyst

TL;DR: The filing documents a tax-withholding share forfeiture of 2,217 ENTA shares; this is a routine, non-sale insider action with limited market impact.

The transaction reported is explicitly described as forfeiture to cover withholding taxes tied to settlement of an RSU award granted August 8, 2022. The form shows a transaction date of 08/08/2025 and a per-share figure of $6.99. Importantly, the reporting person retains direct beneficial ownership of 22,590 shares after the forfeiture. From a trading-impact perspective, the entry documents internal tax withholding rather than an open-market sale, so it is unlikely to materially affect ENTA's share supply or signal a change in insider sentiment on its own.

Corporate Governance Expert

TL;DR: This Form 4 records an internal withholding of shares upon RSU settlement and does not report any change in officer status or an open-market sale.

The filing identifies Scott T. Rottinghaus as the reporting person and lists his relationship to the issuer as Chief Medical Officer. The explanatory note states the 2,217 shares were forfeited solely to cover withholding taxes from settlement of RSUs granted on August 8, 2022. The signature block shows the filing was executed by an attorney-in-fact. There is no indication in the document of a change in employment status, additional grants, or market sales by the reporting person; the disclosed action is administrative in nature.

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

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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^*

Rottinghaus Scott T.

(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 Medical Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2025

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
Common Stock	08/08/2025		F		2,217(1)	D	$6.99	22,590	D

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

Explanation of Responses:

1. 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.

	/s/ Matthew Kowalsky as attorney-in-fact	08/08/2025
	** 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.

FAQ

What transaction did ENTA insider Scott T. Rottinghaus report on the Form 4?

The Form 4 reports that 2,217 shares were forfeited to cover withholding taxes upon settlement of part of an RSU award; the transaction date is 08/08/2025 and the listed per-share figure is $6.99.

Does the Form 4 show a sale of ENTA shares by the insider?

No. The filing describes a forfeiture to cover withholding taxes (tax-withholding), not an open-market sale or disposition.

How many ENTA shares does the reporting person own after the transaction?

After the withholding forfeiture, the reporting person beneficially owns 22,590 shares of ENTA common stock directly.

What award triggered the withholding reported on this Form 4?

The withholding resulted from settlement of a portion of a restricted stock unit (RSU) award granted August 8, 2022.

Who signed the Form 4 on behalf of the reporting person?

The filing was executed by Matthew Kowalsky as attorney-in-fact for the reporting person.