# EDGAR Filing Document

**Accession Number:** 0001783973
**File Stem:** 0001783973-26-000002
**Filing Date:** 2026-3
**Character Count:** 8425
**Document Hash:** 5ff0aaad3c41a51245fba9b5e37d36f8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001783973-26-000002.hdr.sgml**: 20260317

**ACCESSION NUMBER**: 0001783973-26-000002

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260315

**FILED AS OF DATE**: 20260317

**DATE AS OF CHANGE**: 20260317

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Traub Robert T
- **CENTRAL INDEX KEY:** 0001783973

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-12019
- **FILM NUMBER:** 26763272

**MAIL ADDRESS:**
- **STREET 1:** QUAKER CHEMICAL CORPORATION
- **STREET 2:** ONE QUAKER PARK, 901 E. HECTOR STREET
- **CITY:** CONSHOHOCKEN
- **STATE:** PA
- **ZIP:** 19428-2380
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** QUAKER CHEMICAL CORP
- **CENTRAL INDEX KEY:** 0000081362
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS PRODUCTS OF PETROLEUM &  COAL [2990]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 230993790
- **STATE OF INCORPORATION:** PA
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** ONE QUAKER PARK
- **STREET 2:** 901 HECTOR STREET
- **CITY:** CONSHOHOCKEN
- **STATE:** PA
- **ZIP:** 19428
- **BUSINESS PHONE:** 6108324000

**MAIL ADDRESS:**
- **STREET 1:** ONE QUAKER PARK
- **STREET 2:** 901 HECTOR ST
- **CITY:** CONSHOHOCKEN
- **STATE:** PA
- **ZIP:** 19428

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Traub Robert T<br><sub>(Last) (First) (Middle)</sub><br>901 E. HECTOR STREET<br><sub>(Street)</sub><br>CONSHOHOCKEN, PA 19428-2380<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-15 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_SVP, GC & Corp. Sec._ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>QUAKER CHEMICAL CORP [ KWR ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-03-15 |  | A |  | 1028<sup>(1)</sup> | A | $0 | 4019 | D |  |
| Common Stock | 2026-03-15 |  | M |  | 343 | A | <sup>(2)</sup> | 4362 | D |  |
| Common Stock | 2026-03-15 |  | M |  | 534 | A | <sup>(2)</sup> | 4896 | D |  |
| Common Stock | 2026-03-15 |  | M |  | 17 | A | <sup>(3)</sup> | 4913 | D |  |
| Common Stock | 2026-03-15 |  | F |  | 562<sup>(4)</sup> | D | $118.45 | 4351 | D |  |
| Common Stock |  |  |  |  |  |  |  | 1262<sup>(5)</sup> | I | By 401(k) |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(2)</sup> | 2026-03-15 |  | M |  |  | 343 | <sup>(6)</sup> | <sup>(6)</sup> | Common Stock | 343 | $0 | 343 | D |  |
| Restricted Stock Units | <sup>(2)</sup> | 2026-03-15 |  | M |  |  | 534 | <sup>(7)</sup> | <sup>(7)</sup> | Common Stock | 534 | $0 | 1069 | D |  |
| Dividend Equivalent Rights | <sup>(3)</sup> | 2026-03-15 |  | M |  |  | 17 | <sup>(3)</sup> | 2026-03-15 | Common Stock | 17 | <sup>(3)</sup> | 0 | D |  |
| Restricted Stock Units | <sup>(8)</sup> | 2026-03-15 |  | A |  | 1772 |  | <sup>(8)</sup> | <sup>(8)</sup> | Common Stock | 1772 | $0 | 1772 | D |  |

---

### Footnotes:

(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 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 grant 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 obligation upon the full or partial vesting of certain restricted stock, PSUs, and RSUs previously granted under the Company's Long-Term Performance Incentive Plan.

(5) Information based on reporting person's Plan Statement as of December 31, 2025.

(6) On March 15, 2024, the reporting person was granted 1,029 time-based RSUs, vesting in three annual installments beginning on March 15, 2025.

(7) On March 15, 2025, the reporting person was granted 1,603 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.

**Signature:** Victoria K. Gehris, Attorney-in-Fact for Robert T. Traub  
**Date:** 2026-03-17

### Remarks:

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.**