| Mayville Engineering Company, Inc. 401(K) Plan | Institution | 2.129.866 | 8,15% | US$ 75,99M | 2026-02-20 |
| Allspring Global Investments, LLC | Institution | 2.000.350 | 7,65% | US$ 71,37M | 2026-03-31 |
| Mayville Engineering Company, Inc. Esop | Institution | 1.869.090 | 7,15% | US$ 66,69M | 2026-02-20 |
| Mikhail Stiskin | Insider | 995.756 | 3,81% | US$ 35,53M | 2025-10-27 |
| Dimensional Fund Advisors LP | Institution | 926.216 | 3,54% | US$ 33,05M | 2026-03-31 |
| BlackRock, Inc. | Institution | 881.854 | 3,37% | US$ 31,46M | 2026-03-31 |
| Portolan Capital Management, LLC | Institution | 821.136 | 3,14% | US$ 29,30M | 2026-03-31 |
| Royce & Associates, LP | Institution | 751.001 | 2,87% | US$ 26,80M | 2026-03-31 |
| EVR Research LP | Institution | 620.000 | 2,37% | US$ 22,12M | 2026-03-31 |
| Vanguard Capital Management, LLC | Institution | 594.938 | 2,28% | US$ 21,23M | 2026-03-31 |
| William Blair Investment Management, LLC | Institution | 565.300 | 2,16% | US$ 20,17M | 2026-03-31 |
| First Eagle Investment Management, LLC | Institution | 404.075 | 1,55% | US$ 14,42M | 2026-03-31 |
| Granahan Investment Management, LLC | Institution | 387.470 | 1,48% | US$ 13,82M | 2026-03-31 |
| Millennium Management LLC | Institution | 380.972 | 1,46% | US$ 13,59M | 2026-03-31 |
| Columbia Management Investment Advisers, LLC | Institution | 351.790 | 1,35% | US$ 12,55M | 2026-03-31 |
| Bridgeway Capital Management, LLC | Institution | 345.996 | 1,32% | US$ 12,35M | 2026-03-31 |
| Geode Capital Management, LLC | Institution | 335.835 | 1,28% | US$ 11,98M | 2026-03-31 |
| State Street Global Advisors, Inc. | Institution | 285.850 | 1,09% | US$ 10,20M | 2026-03-31 |
| Silvercrest Asset Management Group LLC | Institution | 269.681 | 1,03% | US$ 9,62M | 2026-03-31 |
| Alan Weber | Institution | 250.512 | 0,96% | US$ 8,94M | 2026-03-31 |
| Boston Partners Global Investors, Inc. | Institution | 232.637 | 0,89% | US$ 8,30M | 2026-03-31 |
| American Century Investment Management Inc | Institution | 221.673 | 0,85% | US$ 7,91M | 2026-03-31 |
| Roubaix Capital, LLC | Institution | 210.657 | 0,81% | US$ 7,52M | 2026-03-31 |
| Arrowstreet Capital, Limited Partnership | Institution | 185.261 | 0,71% | US$ 6,61M | 2026-03-31 |
| Mr. Todd Butz | Insider | 173.743 | 0,66% | US$ 6,20M | 2026-02-20 |
| Managed Account Advisors LLC | Institution | 171.104 | 0,65% | US$ 6,10M | 2026-03-31 |
| Crestline Investors Inc. | Institution | 165.713 | 0,63% | US$ 5,91M | 2026-03-31 |
| Mr. Timothy Christen | Insider | 153.804 | 0,59% | US$ 5,49M | 2026-04-21 |
| Wealthspire Advisors LLC | Institution | 141.607 | 0,54% | US$ 5,05M | 2026-03-31 |
| Panoramic Capital, Llc | Institution | 140.000 | 0,54% | US$ 5,00M | 2026-03-31 |
| Russell Investment Management, LLC | Institution | 138.215 | 0,53% | US$ 4,93M | 2026-03-31 |
| Mr. Jagadeesh Reddy | Insider | 126.785 | 0,48% | US$ 4,52M | 2026-06-11 |
| SEI Investments Company | Institution | 122.878 | 0,47% | US$ 4,38M | 2026-03-31 |