de Ridder Lucrece Foufopoulos - 31 May 2026 Form 4 Insider Report for QUAKER CHEMICAL CORP (KWR)

Reporting relationship: Director
Issuer ticker: KWR
Reported as of: 31 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Jun 2026, 19:36:45 UTC
Prior SEC filing: 03 Dec 2025
Next SEC filing: 03 Jun 2026
Source filing: View source filing
Reporting owner signature: Victoria K. Gehris, Attorney-in-Fact for Lucrece Foufopoulos-De Ridder

Key filing fact

de Ridder Lucrece Foufopoulos filed Form 4 for QUAKER CHEMICAL CORP (KWR) on 02 Jun 2026.

Key facts

This page summarizes de Ridder Lucrece Foufopoulos's Form 4 filing for QUAKER CHEMICAL CORP (KWR).
6 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 02 Jun 2026, 19:36.

Change

Previous filing in this sequence was filed on 03 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001994178 Primary reporting owner

Foufopoulos - De Ridder Lucrece

Relationship: Director
Address: 901 E. HECTOR STREET, CONSHOHOCKEN
Signature: Victoria K. Gehris, Attorney-in-Fact for Lucrece Foufopoulos-De Ridder
Signature date: 02 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KWR transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,198
Change %: +84%
Price
Shares after: 2,628
Date: 31 May 2026
Ownership: Direct
Footnotes: F1

KWR transaction

Common Stock

Options Exercise

Transaction value
Shares: +18
Change %: +0.68%
Price
Shares after: 2,646
Date: 31 May 2026
Ownership: Direct
Footnotes: F2

KWR transaction

Common Stock

Tax liability

Transaction value
Shares: -365
Change %: -14%
Price: $143.53^*
Shares after: 2,281
Date: 31 May 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

KWR transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,198
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 31 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,198
Exercise price
Footnotes: F1, F4

KWR transaction Derivative

Dividend Equivalent Rights

Options Exercise

Transaction value
Shares: -18
Change %: -100%
Price
Shares after: 0
Date: 31 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18
Exercise price
Footnotes: F2

KWR transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +975
Change %
Price: $0.000000^*
Shares after: 975
Date: 01 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 975
Exercise price
Footnotes: F5, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Restricted stock units convert into common stock on a one-for-one basis.

Footnote F2

Settlement of dividend equivalent rights in connection with vesting of restricted stock unit. The rights accrued when and as dividends were paid on KWR common stock. Each dividend equivalent right was the economic equivalent of one share of KWR common stock.

Footnote F3

Shares surrendered by reporting person to satisfy statutory withholding tax obligation upon vesting of restricted stock units previously granted on June 1, 2025 under the Company's Long-Term Performance Incentive Plan.

Footnote F4

On June 1, 2025, the reporting person was granted time-based restricted stock units that vested 100% on May 31, 2026.

Footnote F5

Time-based restricted stock units granted under the Company's Long-Term Performance Incentive Plan to Quaker Houghton's non-management directors as part of their 2026 compensation. Each restricted stock unit represents a contingent right to receive one share of KWR common stock.

Footnote F6

The restricted stock units vest 100% on May 31, 2027. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on KWR's common stock.