Form
SCHEDULE 13D/A
Active or control-oriented beneficial ownership filing.
Gulf Hungary Holding Korlatolt Felelossegu Tarsasag - 26 May 2026 SCHEDULE 13D/A Report for Quaker Chemical Corporation Common Stock, par value $1.00 (KWR)
- Filing manager
- Gulf Hungary Holding Korlatolt Felelossegu Tarsasag
- Reporting owner
- Gulf Hungary Holding Korlatolt Felelossegu Tarsasag
- Beneficially owned shares
- 3,640,129 shares
- Large-stake signal
-
Ownership
21%Beneficial ownership of this reported class.
Shares
3,640,129 sharesShares beneficially owned as disclosed.
Event date
26 May 2026Date tied to the ownership event or amendment.
Accepted by SEC
28 May 2026EDGAR acceptance date.
How to read this large-stake filing
- Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
- Compare this filing with the holder history and issuer page before treating the percentage as a current position.
- Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
- Class ownership
- 21%
- Symbol
- KWR
- Shares outstanding
- 17,333,948 shares
- SEC form
- SCHEDULE 13D/A
- Accepted by SEC
- 28 May 2026, 16:12:09 UTC
- Event date
- 26 May 2026
- Prior SEC filing
- 28 Nov 2025
- Source filing
- View source filing
Ownership signal
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Subject security
Names, identifiers, and filing context for this profile.
2 source fields
Source evidence
Original filing metadata and source links for verification.
5 source fields
Key filing fact
Gulf Hungary Holding Korlatolt Felelossegu Tarsasag disclosed 21% ownership in Quaker Chemical Corporation Common Stock, par value $1.00 (KWR) on 26 May 2026.
Key facts
- Gulf Hungary Holding Korlatolt Felelossegu Tarsasag filed SCHEDULE 13D/A for Quaker Chemical Corporation Common Stock, par value $1.00 (KWR).
- Disclosed ownership: 21%.
- Date of event: 26 May 2026.
Change
- Previous schedule filing date: 28 Nov 2025.
- Current filing was accepted on 28 May 2026, 16:12.
Research use
- This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
- Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.
Evidence
Backed by Schedule 13D/13G
View source filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Disclosed reporting parties (2)
Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares owned | Sole voting power | Shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Gulf Hungary Holding Korlatolt Felelossegu Tarsasag | 21% | 3,640,129 | 5,017 | 3,635,112 | /s/ Michael Kelleher | Michael Kelleher, Managing Director | 0001783455 |
| QH Hungary Holdings Limited | 21% | 3,635,112 | 0 | 3,635,112 | /s/ Michael Kelleher | Michael Kelleher, Managing Director | 0001808660 |
CIK / CUSIP context first