Ecovyst (ECVT) CFO discloses 6,231-share insider transaction at $9.80

Rhea-AI Filing Summary

Ecovyst Inc. reported an insider equity transaction by Vice President and Chief Financial Officer Michael Feehan. On 01/05/2026, Feehan disposed of 6,231 shares of Ecovyst common stock at $9.80 per share in a transaction coded "F." Following this transaction, he beneficially owned 367,700 shares of common stock, held directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Feehan Michael

Role See Remarks

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	6,231	$9.80	$61K

Holdings After Transaction: Common Stock — 367,700 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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^*

Feehan Michael

(Last) (First) (Middle)

C/O ECOVYST INC.

600 LEE ROAD, SUITE 200

(Street)

WAYNE PA 19087

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Ecovyst Inc. [ ECVT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	See Remarks

3. Date of Earliest Transaction (Month/Day/Year)
01/05/2026

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	01/05/2026		F		6,231	D	$9.8	367,700	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:

Remarks:

Vice President and Chief Financial Officer

	/s/ Joseph S. Koscinski, as attorney-in-fact for Michael Feehan	01/07/2026
	** 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.

FAQ

What insider transaction did Ecovyst (ECVT) disclose in this Form 4?

The filing shows that Vice President and Chief Financial Officer Michael Feehan disposed of 6,231 shares of Ecovyst common stock on 01/05/2026 at $9.80 per share in a transaction coded "F."

How many Ecovyst (ECVT) shares does Michael Feehan own after this transaction?

After the reported transaction, Michael Feehan beneficially owned 367,700 shares of Ecovyst common stock, held in direct ownership.

What does the transaction code "F" indicate in the Ecovyst (ECVT) insider filing?

The transaction is reported with code "F" in the Form 4 table. The code type is provided in the form, but the excerpt does not further describe it beyond listing it as the transaction code.

What is Michael Feehan’s role at Ecovyst (ECVT)?

The remarks identify Michael Feehan as Ecovyst’s Vice President and Chief Financial Officer.

Is the Ecovyst (ECVT) insider transaction reported as direct or indirect ownership?

The Form 4 reports the post-transaction holdings of 367,700 shares as held under direct (D) ownership by Michael Feehan.

Does the Ecovyst (ECVT) filing mention multiple reporting persons?

No. The form is marked as filed by one reporting person, identifying Michael Feehan as the sole reporting person.