Mayville Engineering Company, I

Historical 13F Holders

Symbol
MEC
CUSIP
578605107
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Shares Held, Excluding Options
Total Filers

13D/G Filers

Each filer's latest filing for 578605107 since 12/18/2024, largest first.

Filer % of Class Filed
BlackRock, Inc. 13G 6.3% 10/27/2026
Event 9/30/2026
Portolan Capital Management, LLC 13G
5.9% 5/28/2026
Event 5/20/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (3)
Hilve Holdings Ltd 13G/A
4.9% 2/13/2026
Event 10/27/2025
Allspring Global Investments Holdings, LLC 13G/A 4.2% 7/8/2026
Event 6/30/2026
FMR LLC 13G/A
3.3% 11/5/2026
Event 9/30/2026

13F Holders by Quarter

Period Filers Shares, Excl. Options Value, Excl. Options
2026 Q3 38 3.47 M $52.9 M
2026 Q2 158 21.6 M $806 M
2026 Q1 124 14.4 M $258 M
2025 Q4 123 13.9 M $260 M
2025 Q3 104 13.3 M $184 M
2025 Q2 114 12.7 M $203 M
2025 Q1 118 12.4 M $168 M
2024 Q4 117 12.5 M $194 M
2024 Q3 117 11.7 M $246 M
2024 Q2 98 10.8 M $179 M
2024 Q1 83 9.65 M $138 M
2023 Q4 83 9.29 M $134 M
2023 Q3 87 8.93 M $98.0 M
2023 Q2 89 8.72 M $109 M
2023 Q1 78 7.83 M $117 M
2022 Q4 70 7.03 M $88.9 M
2022 Q3 60 6.34 M $41.3 M
2022 Q2 65 7.18 M $55.6 M
2022 Q1 66 7.47 M $70.0 M
2021 Q4 70 7.29 M $109 M
2021 Q3 79 7.50 M $141 M
2021 Q2 59 8.18 M $165 M
2021 Q1 60 7.43 M $107 M
2020 Q4 54 7.18 M $96.2 M
2020 Q3 50 6.77 M $62.2 M
2020 Q2 53 6.29 M $49.7 M
2020 Q1 52 5.71 M $35.0 M
2019 Q4 50 6.18 M $58.0 M
2019 Q3 51 5.86 M $77.3 M
2019 Q2 54 5.83 M $80.4 M