Mayville Engineering Company, Inc. (MEC) shareholders
MECNYSEMetal Forgings & StampingsFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 4, 2026Score 6/3043% below fair value
$12.82−1.17 (-8.36%)
Close on Nov 13, 2026Market cap $326.91MP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
84.5%
22M of 26M shares
Institutional holders
154
53 new, 20 sold out
Net institutional buying
7M
In Q2 2026
Insider trades, 12 months
0 buys · 15 sales
Net sold $3.77M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 1,605,585 | 6.30% | 13G (passive) | Sep 30, 2026 |
| George McCabe Joint filing with Portolan Capital Management, LLC (5.92%) | 1,465,004 | 5.92% | 13G (passive) | May 20, 2026 |
| FMR LLC Joint filing with Abigail P. Johnson (5.00%) | 1,280,170 | 5.00% | 13G (passive) | Jun 30, 2026 |
| Hilve Holdings Ltd Joint filing with Mikhail Stiskin (5.30%) | 1,067,170 | 5.30% | 13G (passive) | Oct 27, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of MEC | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Portolan Capital Management, LLC | 1,299,256 | 5.10% | $48.67M | +478,120 | 1.82% |
| FMR LLC | 1,280,170 | 5.02% | $47.96M | +1,275,909 | 0.00% |
| BlackRock, Inc. | 1,183,443 | 4.64% | $44.33M | +301,589 | 0.00% |
| Allspring Global Investments Holdings, LLC | 1,072,916 | 4.21% | $37.78M | −927,434 | 0.06% |
| Driehaus Capital Management LLC | 846,354 | 3.32% | $31.70M | New | 0.18% |
| Summit Partners Public Asset Management, LLC | 800,000 | 3.14% | $29.97M | New | 0.53% |
| Dimensional Fund Advisors LP | 782,276 | 3.07% | $29.30M | −143,940 | 0.01% |
| Royce & Associates LP | 752,083 | 2.95% | $28.17M | +1,082 | 0.23% |
| Vanguard Capital Management LLC | 743,621 | 2.92% | $27.86M | +148,683 | 0.00% |
| First Eagle Investment Management, LLC | 739,150 | 2.90% | $27.69M | +335,075 | 0.02% |
| Boston Partners | 696,429 | 2.73% | $25.81M | +463,792 | 0.02% |
| Jupiter Topco LLC | 575,278 | 2.26% | $21.55M | New | 0.01% |
| Blair William & Co/Il | 546,714 | 2.14% | $20.48M | −18,586 | 0.05% |
| Wellington Management Group Llp | 477,583 | 1.87% | $17.89M | New | 0.00% |
| EVR Research LP | 441,908 | 1.73% | $16.55M | −178,092 | 8.17% |
| Geode Capital Management, LLC | 374,578 | 1.47% | $14.04M | +38,743 | 0.00% |
| Jane Street Group, LLC | 356,151 | 1.40% | $13.34M | New | 0.00% |
| JPMorgan Chase & Co | 347,224 | 1.36% | $13.03M | +341,743 | 0.00% |
| Kennedy Capital Management LLC | 336,377 | 1.32% | $12.60M | +229,586 | 0.22% |
| Ophir Asset Management Pty Ltd | 326,699 | 1.28% | $12.24M | New | 1.01% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 154 | 22M | 84.5% | 53 / 45 | 38 / 20 | 10M | 3M |
| Q1 2026 | 124 | 14M | 56.5% | 24 / 38 | 39 / 20 | 3M | 2M |
| Q4 2025 | 123 | 14M | 54.4% | 30 / 34 | 42 / 11 | 3M | 2M |
| Q3 2025 | 104 | 13M | 52.1% | 12 / 45 | 28 / 20 | 1M | 1M |
| Q2 2025 | 112 | 13M | 49.7% | 14 / 47 | 31 / 18 | 2M | 1M |
| Q1 2025 | 116 | 12M | 48.8% | 15 / 38 | 38 / 12 | 1M | 1M |
| Q4 2024 | 114 | 12M | 48.9% | 21 / 45 | 27 / 22 | 2M | 1M |
| Q3 2024 | 116 | 12M | 45.8% | 34 / 47 | 22 / 14 | 3M | 1M |
| Q2 2024 | 97 | 11M | 42.2% | 24 / 39 | 22 / 8 | 2M | 0M |
| Q1 2024 | 81 | 10M | 37.9% | 10 / 24 | 28 / 8 | 1M | 0M |
| Q4 2023 | 79 | 9M | 36.4% | 5 / 31 | 25 / 12 | 1M | 0M |
| Q3 2023 | 86 | 9M | 34.9% | 12 / 32 | 21 / 10 | 1M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
161 funds held MEC in Q2 2026, 24% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of MEC | Value | % of fund | As of |
|---|---|---|---|---|---|
| Strategic Advisers U.S. Total Stock Fund | 896,568 | 3.52% | $24.07M | 0.02% | May 31, 2026 |
| Allspring Special Small Cap Value Fund | 715,687 | 2.81% | $26.81M | 0.91% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 556,284 | 2.18% | $20.84M | 0.00% | Jun 30, 2026 |
| Janus Henderson Venture Fund | 474,694 | 1.86% | $17.78M | 0.49% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 376,136 | 1.48% | $14.09M | 0.02% | Jun 30, 2026 |
| Royce Small-Cap Opportunity Fund | 354,768 | 1.39% | $13.29M | 0.94% | Jun 30, 2026 |
| First Eagle Small Cap Opportunity Fund | 258,216 | 1.01% | $6.63M | 0.23% | Jul 31, 2026 |
| Nuveen Quant Small Cap Equity Fund | 244,330 | 0.96% | $6.27M | 0.15% | Jul 31, 2026 |
| Boston Partners Small Cap Value Fund II | 198,187 | 0.78% | $5.32M | 0.65% | May 31, 2026 |
| Brighthouse Small Cap Value Portfolio | 182,990 | 0.72% | $6.85M | 0.94% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 169,326 | 0.66% | $6.34M | 0.01% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 159,947 | 0.63% | $4.11M | 0.01% | Jul 31, 2026 |
| iShares Russell 2000 Value ETF | 142,836 | 0.56% | $5.35M | 0.04% | Jun 30, 2026 |
| Driehaus Micro Cap Growth Fund | 133,251 | 0.52% | $4.99M | 0.84% | Jun 30, 2026 |
| Avantis U.S. Small Cap Value ETF | 123,822 | 0.49% | $3.32M | 0.01% | May 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Jagadeesh A. Reddy | President & CEO, Director | 126,785 | 0.50% | Jun 12, 2026 |
| Sean P. Leuba | SVP, GC & Secretary | 6,633 | 0.03% | Aug 7, 2026 |
| Ryan F. Raber | EVP - Strategy, Sales & Mktg | 113,257 | 0.44% | May 27, 2026 |
| Craig D. Nichols | SVP, Operations & Supply Chain | 1,280 | 0.01% | May 26, 2026 |
| Rachele Marie Lehr | Chief Financial Officer | 30,529 | 0.12% | Mar 17, 2026 |
| Todd M. Butz | Chief Financial Officer | 214,741 | 0.84% | Mar 18, 2025 |
| Christine M. Schyvinck | Director | – | – | Apr 23, 2026 |
| Jennifer J. Kent | Director | 24,982 | 0.10% | Apr 23, 2026 |
| Steven L. Fisher | Director | 55,897 | 0.22% | Apr 23, 2026 |
| Robert L. McCormick | Director | 29,078 | 0.11% | Apr 23, 2026 |
| Jay O. Rothman | Director | 24,721 | 0.10% | Apr 23, 2026 |
| Tania Wingfield | Director | 5,949 | 0.02% | Apr 23, 2026 |
| Timothy L. Christen | Director | 153,804 | 0.60% | Apr 23, 2026 |
| Allen J. Carlson | Director | 74,882 | 0.29% | Apr 18, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Sean P. Leuba SVP, GC & Secretary | Aug 6, 2026 | Sale | −12,855 | $25.44 | $327.03K | 6,633 |
| Jagadeesh A. Reddy President & CEO, Director | Jun 11, 2026 | Sale(10b5-1 plan) | −15,688 | $35.05 | $549.86K | 124,105 |
| Jagadeesh A. Reddy President & CEO, Director | Jun 8, 2026 | Sale(10b5-1 plan) | −1,300 | $35.01 | $45.51K | 139,793 |
| Jagadeesh A. Reddy President & CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −17,294 | $30.00 | $518.82K | 141,093 |
| Jagadeesh A. Reddy President & CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −17,942 | $30.00 | $538.26K | 140,445 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | May 26, 2026 | Sale | −20,000 | $26.00 | $520.00K | 86,970 |
| Craig D. Nichols SVP, Operations & Supply Chain | May 21, 2026 | Sale | −4,000 | $23.24 | $92.96K | 146 |
| Sean P. Leuba SVP, GC & Secretary | May 8, 2026 | Gift | +1,015 | – | – | 19,488 |
| Jagadeesh A. Reddy President & CEO, Director | May 7, 2026 | Sale(10b5-1 plan) | −10,332 | $25.72 | $265.74K | 169,851 |
| Jagadeesh A. Reddy President & CEO, Director | May 7, 2026 | Sale(10b5-1 plan) | −11,464 | $26.11 | $299.33K | 158,387 |
| Steven L. Fisher Director | Apr 21, 2026 | Option exercise | +19,532 | – | – | 55,897 |
| Steven L. Fisher Director | Apr 21, 2026 | Option exercise | +14,485 | – | – | 70,382 |
| Steven L. Fisher Director | Apr 21, 2026 | Option exercise | +10,331 | – | – | 80,713 |
| Steven L. Fisher Director | Apr 21, 2026 | Option exercise | +5,883 | – | – | 36,365 |
| Tania Wingfield Director | Apr 21, 2026 | Option exercise | +5,949 | – | – | 5,949 |
| Robert L. McCormick Director | Apr 21, 2026 | Option exercise | +10,331 | – | – | 29,078 |
| Timothy L. Christen Director | Apr 21, 2026 | Option exercise | +12,397 | – | – | 153,804 |
| Rachele Marie Lehr Chief Financial Officer | Mar 15, 2026 | Tax withholding | −4,600 | $16.67 | $76.68K | 30,529 |
| Rachele Marie Lehr Chief Financial Officer | Mar 15, 2026 | Option exercise | +8,560 | – | – | 29,321 |
| Rachele Marie Lehr Chief Financial Officer | Mar 15, 2026 | Option exercise | +5,808 | – | – | 35,129 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Mar 15, 2026 | Tax withholding | −14,150 | $16.67 | $235.88K | 106,970 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Mar 15, 2026 | Option exercise | +12,452 | – | – | 121,120 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Mar 15, 2026 | Option exercise | +17,650 | – | – | 108,668 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 15, 2026 | Option exercise | +27,643 | – | – | 210,245 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 15, 2026 | Tax withholding | −30,062 | $16.67 | $501.13K | 180,183 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 15, 2026 | Option exercise | +36,317 | – | – | 182,602 |
| Craig D. Nichols SVP, Operations & Supply Chain | Mar 15, 2026 | Tax withholding | −1,662 | $16.67 | $27.71K | 4,146 |
| Craig D. Nichols SVP, Operations & Supply Chain | Mar 15, 2026 | Option exercise | +5,808 | – | – | 5,808 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 15, 2026 | Tax withholding | −5,277 | $16.67 | $87.97K | 18,473 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 15, 2026 | Option exercise | +4,646 | – | – | 23,750 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 15, 2026 | Option exercise | +7,263 | – | – | 19,104 |
| Sean P. Leuba GC & Secretary | Mar 5, 2026 | Sale | −2,500 | $20.07 | $50.18K | 0 |
| Sean P. Leuba GC & Secretary | Mar 5, 2026 | Sale | −6,698 | $18.81 | $125.99K | 11,841 |
| Steven L. Fisher Director | Dec 11, 2025 | Sale | −5,000 | $19.14 | $95.70K | 30,482 |
| Steven L. Fisher Director | Dec 11, 2025 | Sale | −5,000 | $19.08 | $95.40K | 35,482 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Nov 25, 2025 | Sale | −12,500 | $16.69 | $208.63K | 93,518 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Nov 25, 2025 | Sale | −2,500 | $16.63 | $41.58K | 91,018 |
| Craig D. Nichols SVP, Operations & Supply Chain | Nov 6, 2025 | Award | +1,134 | $15.95 | $18.09K | 1,134 |
| Sean P. Leuba SVP, Corp. Development & GC | Aug 11, 2025 | Buy | +500 | $13.56 | $6.78K | 2,500 |
| Rachele Marie Lehr Chief Financial Officer | Aug 8, 2025 | Buy | +1,400 | $14.08 | $19.71K | 20,761 |
| Jagadeesh A. Reddy President & CEO, Director | Aug 7, 2025 | Buy | +7,500 | $14.06 | $105.45K | 146,285 |
| Jagadeesh A. Reddy President & CEO, Director | Jul 19, 2025 | Tax withholding | −15,064 | $15.30 | $230.48K | 138,785 |
| Jagadeesh A. Reddy President & CEO, Director | Jul 19, 2025 | Option exercise | +32,051 | – | – | 153,849 |
| Jennifer J. Kent Director | Apr 16, 2025 | Option exercise | +9,026 | – | – | 24,982 |
| Steven L. Fisher Director | Apr 16, 2025 | Option exercise | +9,026 | – | – | 40,482 |
| Robert L. McCormick Director | Apr 16, 2025 | Option exercise | +9,026 | – | – | 18,747 |
| Allen J. Carlson Director | Apr 16, 2025 | Option exercise | +9,026 | – | – | 74,882 |
| Timothy L. Christen Director | Apr 16, 2025 | Option exercise | +10,832 | – | – | 141,407 |
| Rachele Marie Lehr Chief Human Resources Officer | Mar 15, 2025 | Tax withholding | −2,741 | $14.35 | $39.33K | 19,361 |
| Rachele Marie Lehr Chief Human Resources Officer | Mar 15, 2025 | Option exercise | +8,562 | – | – | 22,102 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 15, 2025 | Tax withholding | −3,217 | $14.35 | $46.16K | 18,539 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 15, 2025 | Option exercise | +7,264 | – | – | 21,756 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 15, 2025 | Tax withholding | −17,050 | $14.35 | $244.67K | 121,798 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 15, 2025 | Option exercise | +36,317 | – | – | 138,848 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Mar 15, 2025 | Option exercise | +17,650 | – | – | 114,294 |
| Ryan F. Raber EVP - Strategy, Sales & Mktg | Mar 15, 2025 | Tax withholding | −8,276 | $14.35 | $118.76K | 106,018 |
| Todd M. Butz Chief Financial Officer | Mar 15, 2025 | Tax withholding | −5,637 | $14.35 | $80.89K | 173,743 |
| Todd M. Butz Chief Financial Officer | Mar 15, 2025 | Option exercise | +17,614 | – | – | 179,380 |
| Jagadeesh A. Reddy President & CEO, Director | Mar 12, 2025 | Buy | +380 | $13.75 | $5.23K | 380 |
| Sean P. Leuba SVP, Corp. Development & GC | Mar 6, 2025 | Buy | +1,000 | $14.18 | $14.18K | 2,000 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
11.28%
3M shares short
Days to cover
6.1
At 0M shares a day
Change since last report
+1.5%
From 3M shares
Short volume, 20 days
51.8%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Mayville Engineering's stock actually held short. Settlement fails (shares not delivered on time) peaked at 20,355 shares on Sep 21, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Sean P. Leuba Officer | Aug 6, 2026 | 1,015 | $25.69K | Aug 6, 2026 | Inherited Shares From Deceased Father |
| Sean P. Leuba Officer | Aug 6, 2026 | 11,840 | $309.38K | Aug 6, 2026 | Employer Grant Compensation |
| Jagadeesh A. Reddy Director, Officer | Jun 11, 2026 | 15,688 | $530.88K | Jun 11, 2026 | Restricted Stock Units |
| Jagadeesh A. Reddy Director, Officer | Jun 8, 2026 | 1,300 | $43.23K | Jun 8, 2026 | Restricted Stock Units |
| Jagadeesh A. Reddy Director, Officer | Jun 1, 2026 | 17,294 | $464.34K | Jun 1, 2026 | Restricted Stock Units |
| Jagadeesh A. Reddy Director, Officer | May 7, 2026 | 21,796 | $508.94K | May 7, 2026 | Restricted Stock Units |
See a number that looks wrong?