Enanta Pharmaceuticals (ENTA) CMO forfeits 1,467 shares for RSU tax withholding

Rhea-AI Filing Summary

ENANTA PHARMACEUTICALS INC Chief Medical Officer Scott T. Rottinghaus reported a Code F transaction involving company common stock. On 2026-08-08, 1,467 shares of common stock were forfeited at a reference value of $13.34 per share to cover withholding taxes arising from the settlement of a portion of a restricted stock unit award originally granted on August 8, 2022. Following this tax-withholding disposition, Rottinghaus directly holds 23,787 shares of ENANTA common stock.

Insider Trade Summary

Net Seller: 1,467 shares

Net Sell 1 txn

Insider Rottinghaus Scott T.

Role Chief Medical Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	1,467	$13.34	$20K

Holdings After Transaction: Common Stock — 23,787 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares forfeited for tax withholding: 1,467 shares Reference price per share: $13.34 per share Shares held after transaction: 23,787 shares +1 more

4 metrics

Shares forfeited for tax withholding 1,467 shares Common stock forfeited on 2026-08-08 to cover withholding taxes on RSU settlement

Reference price per share $13.34 per share Value applied to the 1,467 forfeited shares in the Code F transaction

Shares held after transaction 23,787 shares Direct ENTA common stock ownership of Scott T. Rottinghaus following the tax-withholding disposition

RSU grant date referenced August 8, 2022 Date of the restricted stock unit award whose partial settlement triggered the tax withholding

Key Terms

withholding taxes, restricted stock unit award, Code F, tax-withholding disposition

4 terms

withholding taxes financial

"forfeited by the reporting person to cover withholding taxes due as a result of settlement"

Withholding taxes are amounts a payer or government takes out of payments — such as wages, interest, or dividends — before the recipient gets the money, functioning like a cashier keeping part of a bill to pay taxes on your behalf. For investors this matters because it reduces the cash they actually receive, affects net returns and yield calculations, and may require additional paperwork or treaty claims to recover or offset the withheld amount against final tax bills.

restricted stock unit award financial

"due as a result of settlement of a portion of the restricted stock unit award granted"

A restricted stock unit award is a promise by a company to give an employee a specified number of company shares at a future date if certain conditions are met, such as staying with the company or hitting performance goals. For investors, these awards matter because they can increase the total number of shares outstanding when converted, diluting existing holders, and they align employees’ incentives with shareholders’ interests much like giving a rising bonus that becomes real only after conditions are satisfied.

Code F financial

"A Code F transaction reflects payment of tax liability by delivering or withholding securities"

tax-withholding disposition financial

"transaction_action was classified as a tax-withholding disposition of common stock"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/10/2026 - 09:01 AM Accepted by SEC EDGAR 08/10/2026 - 09:00 AM Learn about SEC filing dates

FAQ

What insider transaction did ENTA Chief Medical Officer Scott T. Rottinghaus report?

Scott T. Rottinghaus reported a Code F tax-withholding disposition of ENANTA common stock. 1,467 shares were forfeited to cover withholding taxes due on settlement of a portion of a restricted stock unit award granted on August 8, 2022.

How many ENTA shares were involved in Rottinghaus’s latest Form 4 filing?

The Form 4 reports 1,467 shares of ENANTA common stock forfeited. These shares were used to satisfy withholding tax obligations related to the settlement of part of a restricted stock unit award, rather than being sold in an open-market transaction.

What was the reference price per ENTA share in Rottinghaus’s tax-withholding transaction?

The tax-withholding disposition used a reference value of $13.34 per share for 1,467 shares. This value is reported for the shares forfeited to cover withholding taxes upon settlement of a portion of Rottinghaus’s restricted stock unit award.

How many ENTA shares does Scott T. Rottinghaus hold after this Form 4 transaction?

After the reported transaction, Scott T. Rottinghaus directly holds 23,787 shares of ENANTA common stock. This figure reflects his direct ownership position following the forfeiture of 1,467 shares to satisfy withholding taxes on RSU settlement.

Was the ENTA Form 4 transaction a market sale or a tax-withholding event?

The ENTA Form 4 reflects a tax-withholding event, not a market sale. 1,467 shares were forfeited to cover withholding taxes due on settlement of a portion of a restricted stock unit award granted to Scott T. Rottinghaus.

What equity award triggered the tax-withholding share forfeiture reported for ENTA?

The forfeiture relates to a restricted stock unit award granted on August 8, 2022. Settlement of a portion of this award caused 1,467 shares of ENANTA common stock to be forfeited to satisfy associated withholding tax obligations.

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^*

Rottinghaus Scott T.

(Last) (First) (Middle)

C/O ENANTA PHARMACEUTICALS, INC.

4 KINGSBURY AVENUE

(Street)

WATERTOWN MASSACHUSETTS 02472

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/08/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	08/08/2026		F		1,467(1)	D	$13.34	23,787	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	08/10/2026
	** 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.
* Form 4: SEC 1474 (03-26)