| Donegal Mutual Insurance Co10% owner · 419 transactions | — | 18.99M† | — | 7.83M | — |
| Nikolaus Donald HReporting owner · 182 transactions | — | 1.29M†as of Aug 2018 | 521.3K | 10.1K | 420.0K |
| Hess Jack LeeDirector · 140 transactions | — | 122.1K | 73.3K | 53.8K | 10.0K |
| Wagner Daniel JSr. VP & Treasurer · 143 transactions | — | 105.2K† | 390.0K | 47.1K | 403.3K |
| Miller Jeffrey DeanEVP & Chief Financial Officer · 164 transactions | — | 95.3K† | 391.0K | 17.4K | 387.3K |
| Lyons John JDirector · 19 transactions | — | 92.2K†as of Jan 2014 | 20.8K | 1.0K | — |
| Shenk Robert GSr. Vice President · 75 transactions | — | 71.3K†as of Feb 2019 | 108.2K | 14.3K | 142.1K |
| Kelley Richard GeorgeSr. Vice President · 27 transactions | — | 36.0K†as of Jan 2022 | 35.0K | — | 35.0K |
| Jacobsen Jeffrey AlanSr. Vice President · 19 transactions | — | 31.5K†as of Jun 2022 | 40.0K | — | 40.0K |
| Moore Sewell Trezevant JrDirector · 36 transactions | — | 28.4K† | 64.9K | 1.0K | 37.5K |
| Bawel David BenjaminSVP & CHIEF ACCOUNTING OFFICER · 16 transactions | — | 27.2K† | 18.7K | — | 18.7K |
| Viozzi Vincent AnthonySr. VP & Chief Inv Officer · 78 transactions | — | 22.6K† | 196.0K | — | 197.9K |
| Burke Kevin GerardPresident & Chief Exec Officer, Director · 97 transactions | — | 16.9K† | 393.6K | — | 387.0K |
| Huber Barry CraigDirector · 1 transaction | — | 16.6K | 1.2K | — | — |
| Glatfelter Philip H IIDirector · 63 transactions | — | 16.3K†as of Aug 2016 | 29.4K | — | 25.6K |
| Huber Barry CDirector · 32 transactions | — | 15.4Kas of May 2025 | 38.5K | 6.0K | 33.5K |
| Kraft Kevin Michael SrDirector · 39 transactions | — | 14.6K | 41.3K | 4.1K | 32.9K |
| Altshuler Kristi SpencerSr. Vice President · 20 transactions | — | 12.0K | 73.0K | — | 73.0K |
| Bolinger Robert SDirector · 27 transactions | — | 11.6K†as of Jan 2020 | 46.8K | — | 40.9K |
| Delamater William DanielEVP & Chief Oper Officer · 31 transactions | — | 11.0K | 77.7K | — | 77.7K |
| Mahan Jon MarshallDirector · 41 transactions | — | 10.7K | 64.9K | — | 55.5K |
| Wampler Richard D IIDirector · 71 transactions | — | 10.1Kas of Jan 2024 | 46.4K | — | 38.5K |
| Greenya Cyril JSenior Vice President · 59 transactions | — | 9.8K†as of Jan 2020 | 91.2K | — | 98.9K |
| Bixenman Dennis JosephDirector · 20 transactions | — | 9.4K | 44.0K | — | 39.3K |
| Berlucchi Scott AndrewDirector · 35 transactions | — | 8.9Kas of Jan 2025 | 44.3K | — | 38.5K |
| Pandey SanjaySr. VP & Chief Info Officer · 108 transactions | — | 8.7K† | 240.7K | — | 240.7K |
| Hay Jeffery TimSenior Vice President · 13 transactions | — | 7.5K | 10.0K | — | 10.0K |
| Sherbahn R RichardDirector · 34 transactions | — | 7.4K†as of Feb 2013 | 7.8K | — | 4.9K |
| Haefner Francis Joseph JrSr. Vice President · 14 transactions | — | 6.4Kas of Jan 2022 | 70.0K | — | 70.0K |
| Hoffman Christina MarieSr. VP & Chief Risk Officer · 43 transactions | — | 4.6K | 156.0K | — | 156.3K |
| King David CharlesDirector · 8 transactions | — | 3.7K | 8.2K | — | 4.5K |
| Szady Annette BrookensDirector · 8 transactions | — | 3.7K | 8.2K | — | 4.5K |
| Deas Noland Rone JrSenior Vice President · 58 transactions | — | 2.9K† | 35.3K | — | 35.3K |
| Schatz Britta HarrisDirector · 2 transactions | — | 2.2K | 1.7K | — | — |
| Sponic David WayneSenior Vice President · 32 transactions | — | 2.0K† | 46.0K | 8 | 46.0K |
| Gilmartin Patricia ADirector · 29 transactions | — | 1.5Kas of Jan 2020 | 43.2K | — | 46.3K |
| Long Robert Richard JrSr. VP, General Counsel · 15 transactions | — | 1.5Kas of Jul 2024 | 33.0K | — | 33.0K |
| Folmar William AlbertSr. Vice President · 45 transactions | — | 983 | 149.4K | — | 149.5K |
| Garcia Philip ADirector · 2 transactions | — | 622as of Jan 2011 | 622 | — | — |
| Hudnall Matthew ThomasSenior Vice President · 3 transactions | — | 497as of Jan 2024 | — | — | — |
| Shepard Gregory M10% owner · 62 transactions | — | 0†as of Dec 2015 | — | 339.2K | 4.08M |
| Hecker Rick JosephSVP & GENERAL COUNSEL · 2 transactions | — | 0 | 900 | — | 900 |