| 04/30/2026 3:36 PM | Quaker Houghton (81362) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 04/29/2026 1:45 PM | Quaker Houghton (81362) Subject VANGUARD PORTFOLIO MANAGEMENT LLC (2100121) Filed by | Form SCHEDULE 13G | |
| 04/14/2026 3:38 PM | Quaker Houghton (81362) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 03/31/2026 7:42 AM | Quaker Houghton (81362) Filer | Form DEF 14A | |
| 03/27/2026 10:37 AM | Quaker Houghton (81362) Subject VANGUARD GROUP INC (102909) Filed by | Form SCHEDULE 13G/A | |
| 03/17/2026 3:39 PM | Carvalho Renato (2057999) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/17/2026 3:41 PM | Coler Thomas (2024882) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 03/17/2026 3:44 PM | Dassing Steven R. (2079490) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 02/23/2026 3:36 PM | Quaker Houghton (81362) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 02/23/2026 3:40 PM | Quaker Houghton (81362) Filer | Form 10-K Annual report pursuant to Section 13 or 15(d) | |
| 02/12/2026 3:25 PM | BARRY MICHAEL F (1238141) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
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| 01/20/2026 3:28 PM | Meagher Kevin K. (2104522) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 01/09/2026 3:10 PM | Meagher Kevin K. (2104522) Reporting Quaker Houghton (81362) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 12/17/2025 3:19 PM | Frodl Andre (2089257) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 12/17/2025 3:20 PM | Moreno Hernandez Miguel (2059160) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 12/17/2025 3:20 PM | Quaker Houghton (81362) Issuer Rokosky Kristin (2053776) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 11/28/2025 4:24 PM | Gulf Hungary Holding Korlatolt Felelossegu Tarsasag (1783455) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 11/28/2025 4:27 PM | QH Hungary Holdings Ltd (1808660) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 11/28/2025 4:11 PM | Gulf Hungary Holding Korlatolt Felelossegu Tarsasag (1783455) Filed by Quaker Houghton (81362) Subject | Form SCHEDULE 13D/A | |
| 11/25/2025 3:54 PM | QH Hungary Holdings Ltd (1808660) Reporting Quaker Houghton (81362) Subject | Form 144 Notice of proposed sale of securities pursuant to Rule 144 | |
| 10/30/2025 3:43 PM | Quaker Houghton (81362) Filer | Form 10-Q General form for quarterly reports under Section 13 or 15(d) | |
| 10/17/2025 3:19 PM | Johnson Christine Procopio (2087537) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 10/17/2025 3:16 PM | Frodl Andre (2089257) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 07/31/2025 3:26 PM | Dassing Steven R. (2079490) Reporting Quaker Houghton (81362) Issuer | Form 3 Initial statement of beneficial ownership of securities | |
| 06/12/2025 6:34 AM | Quaker Houghton (81362) Filer | Form 11-K Annual reports of employee stock purchase, savings and similar plans pursuant to Section 15(d) | |
| 06/03/2025 3:41 PM | Quaker Houghton (81362) Issuer Shaller Russell (1646159) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/03/2025 3:42 PM | Quaker Houghton (81362) Issuer West Fay (1524598) Reporting | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/03/2025 3:28 PM | BARRY MICHAEL F (1238141) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 06/03/2025 3:32 PM | DOUGLAS MARK (1434812) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/29/2025 8:10 AM | Quaker Houghton (81362) Filer | Form SD Specialized Disclosure Report | |
| 05/15/2025 7:14 PM | Quaker Houghton (81362) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |
| 05/13/2025 3:17 PM | BERQUIST JOSEPH A (1487224) Reporting Quaker Houghton (81362) Issuer | Form 4 Statement of changes in beneficial ownership of securities | |
| 05/08/2025 6:34 AM | Quaker Houghton (81362) Filer | Form 8-K Current report pursuant to Section 13 or 15(d) | |