Ecovyst (NYSE: ECVT) VP receives 27,158 shares, now holds 584,732

Rhea-AI Filing Summary

Ecovyst Inc. officer reports stock award. Vice President, Chief Administrative Officer, General Counsel and Secretary Joseph S. Koscinski acquired 27,158 shares of Ecovyst common stock on February 3, 2026 at a price of $0.00 per share, indicating a share grant rather than an open-market purchase.

Following this transaction, he directly beneficially owns 584,732 shares of Ecovyst common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Koscinski Joseph S.

Role See Remarks

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	27,158	$0.00	--

Holdings After Transaction: Common Stock — 584,732 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^*

Koscinski Joseph S.

(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)
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		27,158	A	$0	584,732	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, Chief Administrative Officer, General Counsel and Secretary

	/s/ Joseph S. Koscinski	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.
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) report for Joseph S. Koscinski?

Ecovyst reported that officer Joseph S. Koscinski acquired 27,158 shares of common stock on February 3, 2026. The shares were recorded at a price of $0.00 per share, indicating they were granted rather than bought in the open market.

How many Ecovyst (ECVT) shares does Joseph S. Koscinski now own?

After the reported transaction, Joseph S. Koscinski directly beneficially owns 584,732 shares of Ecovyst common stock. This total reflects the addition of 27,158 shares acquired on February 3, 2026 at a recorded price of $0.00 per share.

What role does Joseph S. Koscinski hold at Ecovyst (ECVT)?

Joseph S. Koscinski serves as Ecovyst’s Vice President, Chief Administrative Officer, General Counsel and Secretary. His Form 4 filing identifies him as an officer of the company, with no indication that he is a director or 10% owner.

Was the Ecovyst (ECVT) insider transaction a purchase or a grant?

The transaction is coded as an acquisition of common stock at a price of $0.00 per share. This pricing strongly indicates the shares were granted to Joseph S. Koscinski as compensation, rather than purchased for cash in the open market.

Is the Ecovyst (ECVT) insider transaction held directly or indirectly?

The Form 4 shows the 27,158 acquired Ecovyst common shares are held with direct ownership. Following this grant, Joseph S. Koscinski directly beneficially owns a total of 584,732 Ecovyst common shares, with no indirect ownership reported in this filing.