STOCK TITAN

MEC (MEC) EVP Ryan Raber sells 20,000 shares, retains large stake

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Mayville Engineering Company, Inc. executive Ryan F. Raber, EVP – Strategy, Sales & Marketing, reported an open-market sale of 20,000 shares of Common Stock at $26.00 per share on May 26, 2026.

After this transaction, he directly owns 86,970 shares of Common Stock. He also has 26,287 shares held indirectly through the ESOP and 401(k) plan, plus multiple equity awards, including restricted stock units tied to 29,155, 12,452 and 17,650 underlying shares of Common Stock and stock options covering 44,720, 77,426, 43,291 and 27,595 underlying shares at exercise prices ranging from $10.32 to $17.00 per share.

Positive

  • None.

Negative

  • None.
Insider Raber Ryan F
Role EVP - Strategy, Sales & Mktg
Sold 20,000 shs ($520K)
Type Security Shares Price Value
Sale Common Stock 20,000 $26.00 $520K
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
holding Stock Option (right to buy) -- -- --
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 86,970 shares (Direct, null); Stock Option (right to buy) — 27,595 shares (Direct, null); Restricted Stock Units — 17,650 shares (Direct, null); Common Stock — 26,287 shares (Indirect, by ESOP and/or 401(k) Plan)
Footnotes (1)
  1. Reflects the most recent ESOP and 401(k) balance. The options will vest 50% on each of May 8, 2020 and May 8, 2021. The options will vest 50% on each of February 28, 2022 and February 28, 2023. The options will vest 50% on each of February 28, 2023 and February 28, 2024. The options will vest 50% on each of February 28, 2024 and February 28, 2025. The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027. The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028. The restricted stock units will vest 1/3 on each of March 15, 2027, 2028 and 2029.
Shares sold 20,000 shares Open-market sale of Common Stock on May 26, 2026
Sale price $26.00 per share Price for 20,000 sold Common Stock shares
Direct common shares after sale 86,970 shares Common Stock directly owned following transaction
Indirect ESOP/401(k) shares 26,287 shares Most recent ESOP and 401(k) balance
Largest RSU block 29,155 underlying shares Restricted Stock Units tied to Common Stock
Largest option grant 77,426 shares at $10.32 Stock Option (right to buy) expiring February 28, 2032
Other option grant 44,720 shares at $16.22 Stock Option (right to buy) expiring February 28, 2033
Option expiring 2029 27,595 shares at $17.00 Stock Option (right to buy) expiring May 8, 2029
Restricted Stock Units financial
"security_title: "Restricted Stock Units""
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
Stock Option (right to buy) financial
"security_title: "Stock Option (right to buy)""
ESOP financial
"Reflects the most recent ESOP and 401(k) balance."
An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.
401(k) Plan financial
"nature_of_ownership: "by ESOP and/or 401(k) Plan""
A 401(k) plan is a workplace retirement account that lets employees set aside part of their pay into a tax-advantaged savings pot, often with employers adding matching contributions — like a workplace piggy bank for future income. It matters to investors because the amount people save and how employers fund these plans influence consumer spending, corporate payroll costs and the flow of money into financial markets, which can affect stock prices and company valuations.
open-market sale financial
"transaction_action: "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Raber Ryan F

(Last)(First)(Middle)
135 SOUTH 84TH STREET
SUITE 300

(Street)
MILWAUKEE WISCONSIN 53214

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Mayville Engineering Company, Inc. [ MEC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP - Strategy, Sales & Mktg
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/26/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/26/2026S20,000D$2686,970D
Common Stock26,287(1)Iby ESOP and/or 401(k) Plan
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$17 (2)05/08/2029Common Stock27,59527,595D
Stock Option (right to buy)$14.01 (3)02/28/2031Common Stock43,29143,291D
Stock Option (right to buy)$10.32 (4)02/28/2032Common Stock77,42677,426D
Stock Option (right to buy)$16.22 (5)02/28/2033Common Stock44,72044,720D
Restricted Stock Units$0 (6) (6)Common Stock17,65017,650D
Restricted Stock Units$0 (7) (7)Common Stock12,45212,452D
Restricted Stock Units$0 (8) (8)Common Stock29,15529,155D
Explanation of Responses:
1. Reflects the most recent ESOP and 401(k) balance.
2. The options will vest 50% on each of May 8, 2020 and May 8, 2021.
3. The options will vest 50% on each of February 28, 2022 and February 28, 2023.
4. The options will vest 50% on each of February 28, 2023 and February 28, 2024.
5. The options will vest 50% on each of February 28, 2024 and February 28, 2025.
6. The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027.
7. The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028.
8. The restricted stock units will vest 1/3 on each of March 15, 2027, 2028 and 2029.
/s/ Garrett F. Bishop, Attorney-in-Fact for Ryan F. Raber05/27/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did MEC executive Ryan F. Raber report?

Ryan F. Raber reported an open-market sale of 20,000 shares of Mayville Engineering Company (MEC) Common Stock at $26.00 per share on May 26, 2026. The filing shows this as a standard open-market or private sale transaction.

How many MEC shares does Ryan F. Raber hold after the reported sale?

Following the sale, Ryan F. Raber directly holds 86,970 shares of MEC Common Stock. The filing also shows 26,287 shares held indirectly through an ESOP and 401(k) plan, in addition to various restricted stock units and stock options tied to Common Stock.

What equity awards in MEC does Ryan F. Raber currently have?

Raber holds several MEC equity awards, including restricted stock units linked to 29,155, 12,452 and 17,650 underlying shares. He also has stock options over 44,720, 77,426, 43,291 and 27,595 shares with exercise prices between $10.32 and $17.00.

What are the exercise prices and expirations of MEC options held by Ryan F. Raber?

Raber’s MEC stock options cover 44,720 shares at $16.22 expiring February 28, 2033, 77,426 shares at $10.32 expiring February 28, 2032, 43,291 shares at $14.01 expiring February 28, 2031, and 27,595 shares at $17.00 expiring May 8, 2029.

How are Ryan F. Raber’s MEC ESOP and 401(k) holdings reported?

The filing lists 26,287 shares of MEC Common Stock held indirectly “by ESOP and/or 401(k) Plan,” reflecting the most recent plan balance. These shares are reported as indirect ownership, separate from his directly held Common Stock and equity awards.

What vesting schedules apply to Ryan F. Raber’s MEC stock options and RSUs?

Footnotes state certain options vest 50% on each of May 8, 2020 and May 8, 2021, and others 50% on each of February 28, 2022/2023 or 2023/2024. Restricted stock units vest one-third annually on March 15 across specified years through 2029.