[Form 4] QUAKER CHEMICAL CORP Insider Trading Activity

Rhea-AI Filing Summary

Quaker Chemical’s SVP and Chief Human Resources Officer Kristin Rokosky reported routine equity compensation activity. On March 15, 2026, performance stock units and restricted stock units vested and were settled into 487 shares of common stock, with additional shares from dividend equivalent rights, and she also received a new grant of 1,350 time-based RSUs that vest in three annual installments beginning March 15, 2027. In connection with these vestings, she was awarded 80 shares of common stock and then on March 16, 2026 surrendered 177 shares at $118.45 per share to cover withholding taxes. Following these transactions, Rokosky directly holds 1,109 shares of Quaker Chemical common stock, while the newly granted RSUs represent additional contingent future equity.

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^*

Rokosky Kristin

(Last) (First) (Middle)

901 E. HECTOR STREET

(Street)

CONSHOHOCKEN PA 19428

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
QUAKER CHEMICAL CORP [ KWR ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2026

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	03/15/2026		A		80(1)	A	$0	799	D
Common Stock	03/15/2026		M		75	A	(2)	874	D
Common Stock	03/15/2026		M		42	A	(2)	916	D
Common Stock	03/15/2026		M		363	A	(2)	1,279	D
Common Stock	03/15/2026		M		7	A	(3)	1,286	D
Common Stock	03/16/2026		F		177(4)	D	$118.45	1,109	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
Restricted Stock Units	(2)	03/15/2026		M			75	(5)	(5)	Common Stock	75	$0	75	D
Restricted Stock Units	(2)	03/15/2026		M			42	(6)	(6)	Common Stock	42	$0	43	D
Restricted Stock Units	(2)	03/15/2026		M			363	(7)	(7)	Common Stock	363	$0	726	D
Dividend Equivalent Rights	(3)	03/15/2026		M			7	(3)	03/15/2026	Common Stock	7	(3)	0	D
Restricted Stock Units	(8)	03/15/2026		A		1,350		(8)	(8)	Common Stock	1,350	$0	1,350	D

Explanation of Responses:

1. Shares earned upon vesting and settlement of Performance Stock Units (PSUs) awarded on March 15, 2023, upon certification of performance results by the Compensation and Human Resources Committee based on achievement of the adjusted return on invested capital (ROIC) metric, during the three year performance period.

2. Restricted stock units (RSUs) convert into common stock on a one-for-one basis.

3. Dividend equivalent rights (DERs) accrued on reporting person's RSUs granted on March 15, 2024, September 15, 2024 and March 15, 2025. The rights accrued when and as dividends were paid on KWR common stock. This Form 4 reports the settlement of DERs in connection with the second installment of the 2024 RSU grants and the first installment of the 2025 RSU grant, each vesting on March 15, 2026. Each DER was the economic equivalent of one share of KWR common stock.

4. Shares surrendered by reporting person to satisfy withholding tax obligations upon the partial vesting of certain restricted stock, PSUs, and RSUs previously granted under the Company's Long-Term Performance Incentive Plan.

5. On March 15, 2024, the reporting person was granted 224 time-based RSUs, vesting in three annual installments beginning on March 15, 2025.

6. On September 15, 2024, the reporting person was granted 127 time-based RSUs, vesting in three annual installments beginning on March 15, 2025.

7. On March 15, 2025, the reporting person was granted 1,089 time-based RSUs, vesting in three annual installments beginning on March 15, 2026.

8. Time-based RSUs granted under the Company's Long-Term Performance Incentive Plan, which will vest in three annual installments beginning on March 15, 2027. Each RSU represents a contingent right to receive one share of KWR common stock and DERs accrue with respect to these RSUs when and as dividends are paid on KWR common stock.

Remarks:

	Victoria K. Gehris, Attorney-in-Fact for Kristin Rokosky	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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