Mayville Engineering Company MEC Insider Ownership

NYSE MEC
$16.35 -0.50 (-2.94%)
As of: Sep 29, 2026 · 3:59 PM EDT

Insider Holdings by Owner

1.36Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
6.18%
▼-0.056% pp QoQ
Shares Held by Insiders
1.41Mn
filed for Sep 2026
▼-0.91% QoQ
Shares Outstanding
22.77Mn
22,767,889 shares
Direct Holdings
1.36Mn
Indirect: 44.07K
Net Shares Traded (QoQ)
-12.86K
net selling in Sep 2026
Insiders Holding Shares
16
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of September 29, 2026, the three largest insider holders of MEC are Robert D Kamphuis (Chairman, Pres. Ceo, 420.54K shares), Todd M Butz (Chief Financial Officer, 173.74K shares), Timothy L Christen (Director, 153.80K shares).

Form 4 Holdings

Insiders Holding MEC

Insiders 16
Shares held 1.36Mn
Of outstanding 5.99%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Robert D Kamphuis Chairman, Pres. Ceo 420,536 0 420,536 30.9% 02 Mar, 2022
2 Todd M Butz Chief Financial Officer 173,743 0 173,743 12.7% 18 Mar, 2025
3 Timothy L Christen Director 153,804 0 153,804 11.3% 23 Apr, 2026
4 Jagadeesh A Reddy President Ceo 124,105 0 124,105 9.1% 12 Jun, 2026
5 Ryan F Raber Evp Strategy, Sales Mktg 86,970 0 86,970 6.4% 27 May, 2026
6 Patrick D Michels Director 81,135 0 81,135 6.0% 19 Apr, 2023
7 Steven L Fisher Director 80,713 0 80,713 5.9% 23 Apr, 2026
8 Allen J Carlson Director 74,882 0 74,882 5.5% 18 Apr, 2025
9 Randall P Stille Chief Operating Officer 45,056 0 45,056 3.3% 02 Mar, 2023
10 Rachele Marie Lehr Chief Financial Officer 30,529 0 30,529 2.2% 17 Mar, 2026
11 Robert L Mccormick Director 29,078 0 29,078 2.1% 23 Apr, 2026
12 Jennifer J. Kent Director 24,982 0 24,982 1.8% 18 Apr, 2025
13 Jay O. Rothman Director 24,721 0 24,721 1.8% 17 Apr, 2024
14 Sean P Leuba Svp, Gc Secretary 6,633 0 6,633 0.5% 07 Aug, 2026
15 Tania Wingfield Director 5,949 0 5,949 0.4% 23 Apr, 2026
16 Craig D Nichols Svp, Operations Supply Chain 146 0 146 0.0% 26 May, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

451 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
06 Aug, 2026 Sean P Leuba Svp, Gc Secretary Disposed S 12,855 $25.44 $327.03K 6,633 Direct
11 Jun, 2026 Jagadeesh A Reddy President Ceo Disposed S 15,688 $35.05 $549.82K 124,105 Direct
08 Jun, 2026 Jagadeesh A Reddy President Ceo Disposed S 1,300 $35.01 $45.51K 139,793 Direct
01 Jun, 2026 Jagadeesh A Reddy President Ceo Disposed S 17,294 $30.00 $518.82K 141,093 Direct
01 Jun, 2026 Jagadeesh A Reddy President Ceo Disposed S 17,942 $30.00 $538.26K 140,445 Direct
26 May, 2026 Ryan F Raber Evp Strategy, Sales Mktg Disposed S 20,000 $26.00 $520.00K 86,970 Direct
21 May, 2026 Craig D Nichols Svp, Operations Supply Chain Disposed S 4,000 $23.24 $92.96K 146 Direct
08 May, 2026 Sean P Leuba Svp, Gc Secretary Acquired G 1,015 $0.00 $0 19,488 Direct
07 May, 2026 Jagadeesh A Reddy President Ceo Disposed S 10,332 $25.72 $265.74K 169,851 Direct
07 May, 2026 Jagadeesh A Reddy President Ceo Disposed S 11,464 $26.11 $299.33K 158,387 Direct
21 Apr, 2026 Robert L Mccormick Director Acquired M 10,331 $0.00 $0 29,078 Direct
21 Apr, 2026 Steven L Fisher Director Acquired M 5,883 $0.00 $0 36,365 Direct
21 Apr, 2026 Timothy L Christen Director Acquired M 12,397 $0.00 $0 153,804 Direct
21 Apr, 2026 Tania Wingfield Director Acquired M 5,949 $0.00 $0 5,949 Direct
21 Apr, 2026 Christine M. Schyvinck Director, Other Acquired A 5,959 $0.00 $0 5,959 Direct
21 Apr, 2026 Jay O. Rothman Director Acquired A 5,959 $0.00 $0 71,451 Direct
21 Apr, 2026 Jennifer J. Kent Director Acquired A 5,959 $0.00 $0 30,775 Direct
21 Apr, 2026 Robert L Mccormick Director Disposed M 10,331 $0.00 $0 0 Direct
21 Apr, 2026 Steven L Fisher Director Acquired M 19,532 $0.00 $0 55,897 Direct
21 Apr, 2026 Timothy L Christen Director Disposed M 12,397 $0.00 $0 0 Direct