As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of Quaker Chemical Corporation. The largest reported stake is Gulf Hungary Holding Korlatolt Felelossegu Tarsasag's, at 21.1%. 5 filings are on record since November 28, 2025 (Schedule 13D/A, August 24, 2026).
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Key facts
- · Reporting person: Gulf Hungary Holding Korlatolt Felelossegu Tarsasag · Sole voting: 3,905 · Shared voting: 3,635,112 · Sole dispositive: 3,905 · Shared dispositive: 3,635,112 · SCHEDULE 13D/A, 2026-08-24
- · Holder: Gulf Hungary Holding Korlatolt Felelossegu Tarsasag · Percent: 21% · SCHEDULE 13D/A
- · Holder: Vanguard Portfolio Management · Percent: 5.39% · SCHEDULE 13G
- · Holder: The Vanguard Group · Percent: 0% · SCHEDULE 13G/A
- · Holder: Gulf Hungary Holding Korlatolt Felelossegu Tarsasag · Percent: 21% · SCHEDULE 13D/A
Quaker Chemical Corporation has 5 Schedule 13D or 13G filings on record since 2025-11-28. 2 holders' latest filing reports 5% or more of common stock, par value $1.00. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 21.1% | 3,639,017 | SCHEDULE 13D/A, 2026-08-24 | 2026-08-20 |
| Vanguard Portfolio Management | 5.39% | 934,704 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Quaker Chemical Corporation and the records around it.
Quaker Chemical Corporation elsewhere on the record
- Leadership changes Sep 2026
- Who owns it
Companies that share a holder
- Vanguard Portfolio Management also filed stake reports on 941 other companies: Newmark Group Inc (Nov 2026), A10 Networks Inc (Oct 2026), ADT Inc (Oct 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 3,905 | 3,635,112 | 3,905 | 3,635,112 | SCHEDULE 13D/A, 2026-08-24 |
| QH Hungary Holdings Limited | 0 | 3,635,112 | 0 | 3,635,112 | SCHEDULE 13D/A, 2026-08-24 |
The latest filing identifies Quaker Chemical Corporation by CUSIP 747316107 and gives its principal executive office as ONE QUAKER PARK, 901 HECTOR STREET, CONSHOHOCKEN, PA 19428 (SCHEDULE 13D/A, 2026-08-24).
Source of funds (Item 3)
For Item 3, see Amendment No. 1 to Schedule 13D filed on April 13, 2020.Gulf Hungary Holding Korlatolt Felelossegu Tarsasag, SCHEDULE 13D/A, 2026-08-24
Purpose of Transaction (Item 4)
Gulf Hungary Holding Korlatolt Felelossegu Tarsasag
Introductory Note This Amendment No. 41 to Schedule 13D (this "Amendment No. 41") amends and supplements the statement on Schedule 13D filed on August 9, 2019, as amended by Amendment No. 1 filed on April 13, 2020, Amendment No. 2 filed on May 21, 2020, Amendment No. 3 filed on May 28, 2020, Amendment No. 4 filed on August 31, 2020, Amendment No. 5 filed on March 11, 2021, Amendment No. 6 filed on May 26, 2022, Amendment No. 7 filed on July 13, 2022, Amendment No. 8 filed on July 18, 2022, Amendment No. 9 filed on July 21, 2022, Amendment No. 10 filed on July 26, 2022, Amendment No. 11 filed on July 29, 2022, Amendment No. 12 filed on August 3, 2022, Amendment No. 13 filed on August 8, 2022, Amendment No. 14 filed on August 11, 2022, Amendment No. 15 filed on August 12, 2022, Amendment No. 16 filed on March 8, 2023, Amendment No. 17 filed on November 27, 2023, Amendment No. 18 filed on May 24, 2024, Amendment No. 19 filed on November 26, 2024, Amendment No. 20 filed on November 27, 2024, Amendment No. 21 filed on December 4, 2024, Amendment No. 22 filed on December 9, 2024, Amendment No. 23 filed on December 12, 2024, Amendment No. 24 filed on December 17, 2024, Amendment No. 25 filed on December 20, 2024, Amendment No. 26 filed on December 26, 2024, Amendment No. 27 filed on December 27, 2024, Amendment No. 28 filed on January 2, 2025, Amendment No. 29 filed on January 7, 2025, Amendment No. 30 filed on January 10, 2025, Amendment No. 31 filed on January 15, 2025, …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-08-24; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-28 | Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 21% | SCHEDULE 13D/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 5.39% | SCHEDULE 13G |
| 2026-05-28 | Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 21% | SCHEDULE 13D/A |
| 2026-08-24 | Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 21.1% | SCHEDULE 13D/A |
Questions about who owns Quaker Chemical Corporation
Who owns Quaker Chemical Corporation?
On this page, 2 holders' latest ownership filings report 5% or more of Quaker Chemical Corporation: Gulf Hungary Holding Korlatolt Felelossegu Tarsasag (21.1%, Schedule 13D/A, filed 2026-08-24) and Vanguard Portfolio Management (5.39%, Schedule 13G, filed 2026-04-29).
Who are the largest shareholders of Quaker Chemical Corporation?
By the share each holder's latest filing reports, the largest holders of Quaker Chemical Corporation on this page are Gulf Hungary Holding Korlatolt Felelossegu Tarsasag (21.1%) and Vanguard Portfolio Management (5.39%).
When did Gulf Hungary Holding Korlatolt Felelossegu Tarsasag buy into Quaker Chemical Corporation?
The filings give report dates, not purchase dates. The earliest filing from Gulf Hungary Holding Korlatolt Felelossegu Tarsasag on this page is the Schedule 13D/A, filed 2025-11-28, reporting 21%; its latest, Schedule 13D/A filed 2026-08-24, reports 21.1%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Quaker Chemical Corporation
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 22, 2026 | Leadership change: Neil Daniels appointed, Chief Accounting Officer, and 1 more | — | Leadership changes | Source |
| September 8, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| July 7, 2026 | Leadership change: Steven Dassing departs, Vice President, Corporate Controller and Principal Accounting | — | Leadership changes | Source |
| May 15, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.