Ecovyst Inc. (ECVT) director granted 19,399 new common shares

Rhea-AI Filing Summary

Ecovyst Inc. director Donald L. Althoff reported acquiring additional company stock. On February 3, 2026, he acquired 19,399 shares of Ecovyst common stock at a stated price of $0 per share, increasing his directly held position to 58,376 shares.

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^*

Althoff Donald L.

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/03/2026

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	02/03/2026		A		19,399	A	$0	58,376	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:

	/s/ Joseph S. Koscinski, as attorney-in-fact for Donald L. Althoff	02/05/2026
	** 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.
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FAQ

What insider transaction did Ecovyst (ECVT) director Donald L. Althoff report?

Donald L. Althoff reported acquiring 19,399 Ecovyst common shares on February 3, 2026. The Form 4 shows this as an acquisition transaction, coded “A,” and lists the shares at a stated price of $0 per share, increasing his directly owned holdings.

How many Ecovyst (ECVT) shares does Donald L. Althoff own after this Form 4 transaction?

After the reported transaction, Donald L. Althoff beneficially owns 58,376 Ecovyst common shares directly. This total reflects the new acquisition of 19,399 shares on February 3, 2026, as disclosed in the Form 4’s Table I for non-derivative securities.

Was Ecovyst (ECVT) stock acquired or sold in Donald L. Althoff’s Form 4 filing?

The Form 4 reports an acquisition of Ecovyst stock, not a sale. Transaction code “A” indicates 19,399 shares of common stock were acquired, increasing Althoff’s directly held position to 58,376 shares, according to the non-derivative securities table in the filing.

At what price were the Ecovyst (ECVT) shares acquired in this insider transaction?

The reported acquisition price is $0 per share for the 19,399 Ecovyst common shares. This zero-dollar figure appears in the Form 4’s Table I, indicating the shares were acquired without cash consideration, consistent with many equity-based awards or grants to directors.

Is Donald L. Althoff’s Ecovyst (ECVT) Form 4 filed for one or multiple reporting persons?

The Form 4 is filed for a single reporting person, Donald L. Althoff. The filing box for “Form filed by One Reporting Person” is checked, and there is no indication of joint or group reporting with other insiders or related entities in this disclosure.