MEC SEC Filing News — Mayville Engineering Company, Inc.

Latest SEC filings for Mayville Engineering Company, Inc. (MEC) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-08-07.

Mayville Engineering Company, Inc., together with its subsidiaries, engages in the production, design, prototyping and tooling, fabrication, aluminum extrusion, coating, and assembling of aftermarket components in the United States. It supplies engineered components to original equipment manufacturers. The company serves heavy and medium duty commercial vehicles, construction and access equipment, powersports, data center and critical power, agriculture, military, and other end markets. Mayville…
Sector: Industrials Industry: Metal Fabrication Market Cap: $355.5M CIK: 1766368
20
Total Filings
0
Bullish Classifications
7
Bearish Classifications
9
Insider Transactions
3
Material Events (8-K)
2
Periodic Reports
Rule-based classifications for MEC currently lean bearish. Of the 20 filing records displayed, 7 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
MEC Filing Activity Snapshot 2026-04-23 — 2026-08-07
Insider Transactions (Form 4)
0 buys vs 7 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$565.1K
Reddy Jagadeesh A (Director, President & CEO) · 2026-05-11
21,796 shares · Form 4
Form 144 Notices
6
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 9 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 9 filings in this group are Form 4s for Mayville Engineering Company, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 9 insider filings shown, the breakdown is 7 open-market sale, 1 compensation award and 1 gift. 7 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×7
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Compensation award ×1
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Gift ×1
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Form 4 Open-market sale Insider Selling 2026-08-07

MEC insider Leuba Sean P (SVP, GC & Secretary) sold 12,855 shares (~$327.0K)

Leuba Sean P, listed as SVP, GC & Secretary at Mayville Engineering Company, Inc., reported an open-market sale of 12,855 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 12,855 $25.44 $327.0K
Filing: Form 4 (Insider Transaction) Insider: Leuba Sean P (SVP, GC & Secretary) Shares: 12,855 Est. Value: $327.0K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-12

MEC insider Reddy Jagadeesh A (Director, President & CEO) sold 15,688 shares (~$549.8K)

Reddy Jagadeesh A, listed as Director, President & CEO at Mayville Engineering Company, Inc., reported an open-market sale of 15,688 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 15,688 $35.05 $549.8K
Filing: Form 4 (Insider Transaction) Insider: Reddy Jagadeesh A (Director, President & CEO) Shares: 15,688 Est. Value: $549.8K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-10

MEC insider Reddy Jagadeesh A (Director, President & CEO) sold 1,300 shares (~$45.5K)

Reddy Jagadeesh A, listed as Director, President & CEO at Mayville Engineering Company, Inc., reported an open-market sale of 1,300 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 1,300 $35.01 $45.5K
Filing: Form 4 (Insider Transaction) Insider: Reddy Jagadeesh A (Director, President & CEO) Shares: 1,300 Est. Value: $45.5K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-06-02

MEC insider Reddy Jagadeesh A (Director, President & CEO) sold 17,942 shares (~$538.3K)

Reddy Jagadeesh A, listed as Director, President & CEO at Mayville Engineering Company, Inc., reported an open-market sale of 17,942 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 17,942 $30.00 $538.3K
Filing: Form 4 (Insider Transaction) Insider: Reddy Jagadeesh A (Director, President & CEO) Shares: 17,942 Est. Value: $538.3K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-05-27

MEC insider Raber Ryan F (EVP - Strategy, Sales & Mktg) sold 20,000 shares (~$520.0K)

Raber Ryan F, listed as EVP - Strategy, Sales & Mktg at Mayville Engineering Company, Inc., reported an open-market sale of 20,000 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 20,000 $26.00 $520.0K
Filing: Form 4 (Insider Transaction) Insider: Raber Ryan F (EVP - Strategy, Sales & Mktg) Shares: 20,000 Est. Value: $520.0K
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-05-26

MEC insider Nichols Craig D (SVP, Operations & Supply Chain) sold 4,000 shares (~$93.0K)

Nichols Craig D, listed as SVP, Operations & Supply Chain at Mayville Engineering Company, Inc., reported an open-market sale of 4,000 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 4,000 $23.24 $93.0K
Filing: Form 4 (Insider Transaction) Insider: Nichols Craig D (SVP, Operations & Supply Chain) Shares: 4,000 Est. Value: $93.0K
View on SEC EDGAR → Open Filing Document →
Form 4 Gift Tax / Compensation Filing 2026-05-12

MEC insider Form 4 filed for equity award, exercise, or tax withholding

Leuba Sean P (SVP, GC & Secretary) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code Nature Shares Price Value
G Gift 1,015 — —
Filing: Form 4 (Insider Transaction) Insider: Leuba Sean P (SVP, GC & Secretary) Shares: 1,015
View on SEC EDGAR → Open Filing Document →
Form 4 Open-market sale Insider Selling 2026-05-11

MEC insider Reddy Jagadeesh A (Director, President & CEO) sold 21,796 shares (~$565.1K)

Reddy Jagadeesh A, listed as Director, President & CEO at Mayville Engineering Company, Inc., reported an open-market sale of 21,796 MEC shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code Nature Shares Price Value
S Open-market sale 10,332 $25.72 $265.7K
S Open-market sale 11,464 $26.11 $299.3K
Filing: Form 4 (Insider Transaction) Insider: Reddy Jagadeesh A (Director, President & CEO) Shares: 21,796 Est. Value: $565.1K
View on SEC EDGAR → Open Filing Document →
Form 4 Compensation award Tax / Compensation Filing 2026-04-23

MEC insider Form 4 filed for equity award, exercise, or tax withholding

Wingfield Tania (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code Nature Shares Price Value
M Option exercise 5,949 — —
M Option exercise derivative · Director Restricted Stock Units 5,949 — —
A Compensation award derivative · Director Restricted Stock Units 5,959 — —
Filing: Form 4 (Insider Transaction) Insider: Wingfield Tania (Director) Shares: 5,949
View on SEC EDGAR → Open Filing Document →
Proposed Insider Sales 6 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Mayville Engineering Company, Inc. has 6 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-08-06

MEC Form 144 filed for proposed insider sale by Leuba Sean P (1,015 shares) ~$25.7K

Leuba Sean P filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Leuba Sean P Shares: 1,015 Est. Value: $25.7K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-08-06

MEC Form 144 filed for proposed insider sale by Leuba Sean P (11,840 shares) ~$309.4K

Leuba Sean P filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Leuba Sean P Shares: 11,840 Est. Value: $309.4K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-11

MEC Form 144 filed for proposed insider sale by JAGADEESH REDDY (15,688 shares) ~$530.9K

JAGADEESH REDDY filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: JAGADEESH REDDY Shares: 15,688 Est. Value: $530.9K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-08

MEC Form 144 filed for proposed insider sale by JAGADEESH REDDY (1,300 shares) ~$43.2K

JAGADEESH REDDY filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: JAGADEESH REDDY Shares: 1,300 Est. Value: $43.2K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-06-01

MEC Form 144 filed for proposed insider sale by JAGADEESH REDDY (17,294 shares) ~$464.3K

JAGADEESH REDDY filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: JAGADEESH REDDY Shares: 17,294 Est. Value: $464.3K
View on SEC EDGAR → Open Filing Document →
Form 144 Proposed Insider Sale 2026-05-07

MEC Form 144 filed for proposed insider sale by JAGADEESH A REDDY (21,796 shares) ~$508.9K

JAGADEESH A REDDY filed a Form 144 with the SEC indicating intent to sell MEC (Mayville Engineering Company, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: JAGADEESH A REDDY Shares: 21,796 Est. Value: $508.9K
View on SEC EDGAR → Open Filing Document →
Material Events 3 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 3 in this period for Mayville Engineering Company, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-04

MEC filed 8-K — material company event

Mayville Engineering Company, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-05-21

MEC filed 8-K — material company event

Mayville Engineering Company, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Form 8-K Material Company Update 2026-05-05

MEC filed 8-K — material company event

Mayville Engineering Company, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)
View on SEC EDGAR → Open Filing Document →
Periodic Reports 2 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 2 quarterly reports (10-Q) for Mayville Engineering Company, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-05

MEC filed Quarterly Report (10-Q)

Mayville Engineering Company, Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →
Form 10-Q Quarterly Report 2026-05-06

MEC filed Quarterly Report (10-Q)

Mayville Engineering Company, Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
View on SEC EDGAR → Open Filing Document →

How we classify Mayville Engineering Company, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on MEC. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — MEC SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
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