STOCK TITAN

MEC CEO Reddy (NYSE: MEC) sells 17,294 shares under 10b5-1 plan

(Neutral)
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

Mayville Engineering Company, Inc. President & CEO Jagadeesh A. Reddy filed an amended insider report showing he sold 17,294 shares of common stock on June 1, 2026 at a weighted average price of $30.0001 per share. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 12, 2025.

The amendment corrects an earlier report that had stated 17,942 shares were sold and adjusts the number of shares beneficially owned after the transaction. Following the sale, Reddy directly held 141,093 common shares, plus indirect holdings of 380 shares by his daughter and 2,300 shares through an ESOP and 401(k) plan.

Reddy also retained equity incentives, including stock options representing 88,901 underlying common shares at an exercise price of $16.22, and several tranches of restricted stock units covering 74,986, 55,284 and 36,317 underlying common shares that vest in annual installments on March 15 from 2025 through 2029.

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Negative

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Insider Reddy Jagadeesh A
Role President & CEO
Sold 17,294 shs ($519K)
Type Security Shares Price Value
Sale Common Stock 17,294 $30.0001 $519K
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Restricted Stock Units -- -- --
holding Stock Option (right to buy) -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 141,093 shares (Direct); Restricted Stock Units — 36,317 shares (Direct); Stock Option (right to buy) — 88,901 shares (Direct); Common Stock — 2,300 shares (Indirect, by ESOP and/or 401(k) Plan)
Footnotes (1)
  1. The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025. The Form 4 filed on June 2, 2026 reported the sale of 17,942 shares on June 1, 2026. This amended Form 4 is being filed to report that the reporting person actually sold 17,294 shares on June 1, 2026 and to correct the number of shares beneficially owned following the reported transaction. The price in Column 4 is a weighted average price. The prices actually received ranged from $30.00 to $30.01. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing a weighted average price. Reflects the most recent ESOP and 401(k) balance. 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. The options will vest 50% on each of February 28, 2024 and February 28, 2025.
Shares sold 17,294 shares Open-market sale on June 1, 2026
Weighted average sale price $30.0001 per share Common stock sale on June 1, 2026
Direct common shares after sale 141,093 shares Shares beneficially owned following transaction
Indirect holdings by daughter 380 shares Common stock held indirectly
ESOP/401(k) holdings 2,300 shares Most recent ESOP and 401(k) balance
Stock options 88,901 underlying shares at $16.22 Options outstanding, direct ownership
RSUs tranche 1 74,986 underlying shares RSUs vesting 1/3 on March 15, 2025–2027
RSUs tranche 2 55,284 underlying shares RSUs vesting 1/3 on March 15, 2026–2028
Rule 10b5-1 trading plan regulatory
"The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
restricted stock units financial
"The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027."
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.
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
"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.
Stock Option (right to buy) financial
"Stock Option (right to buy)"

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FAQ

What insider transaction did MEC CEO Jagadeesh Reddy report on June 1, 2026?

MEC President & CEO Jagadeesh A. Reddy reported selling 17,294 shares of common stock on June 1, 2026 at a weighted average price of $30.0001. This was an open-market sale disclosed in an amended Form 4 filing.

Why was this Form 4/A for Mayville Engineering (MEC) filed as an amendment?

The Form 4/A corrects a prior report that had stated Reddy sold 17,942 shares on June 1, 2026. The amendment revises the actual number sold to 17,294 and updates his beneficial ownership totals following the transaction.

Was the MEC CEO’s June 1, 2026 share sale pre-planned under a Rule 10b5-1 plan?

Yes. A footnote states the reported transaction was effected under a Rule 10b5-1 trading plan adopted on December 12, 2025. Such plans schedule trades in advance, providing context that the timing was pre-arranged rather than discretionary.

How many MEC common shares does CEO Jagadeesh Reddy hold after this sale?

After selling 17,294 shares, Reddy directly held 141,093 MEC common shares. He also had indirect holdings of 380 shares through his daughter and 2,300 shares through the company’s ESOP and 401(k) plan, as disclosed in the filing.

What stock options and RSUs does the MEC CEO retain after the June 2026 sale?

Reddy retained options over 88,901 common shares at a $16.22 exercise price and restricted stock units covering 74,986, 55,284 and 36,317 underlying shares. The RSUs vest in equal thirds on March 15 dates between 2025 and 2029.

At what prices were MEC shares sold in the CEO’s June 1, 2026 transaction?

The sale used a weighted average price of $30.0001 per share. A footnote notes individual trade prices ranged from $30.00 to $30.01, and detailed breakdowns are available from the issuer or the reporting person upon request.
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).
X
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*
Reddy Jagadeesh A

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President & CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026
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)
06/02/2026
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 Stock06/01/2026S(1)17,294(2)D$30.0001(3)141,093(2)D
Common Stock2,300(4)Iby ESOP and/or 401(k) Plan
Common Stock380IBy Daughter
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
Restricted Stock Units$0 (5) (5)Common Shares36,31736,317D
Restricted Stock Units$0 (6) (6)Common Shares55,28455,284D
Restricted Stock Units$0 (7) (7)Common Shares74,98674,986D
Stock Option (right to buy)$16.22 (8) (8)Common Shares88,90188,901D
Explanation of Responses:
1. The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.
2. The Form 4 filed on June 2, 2026 reported the sale of 17,942 shares on June 1, 2026. This amended Form 4 is being filed to report that the reporting person actually sold 17,294 shares on June 1, 2026 and to correct the number of shares beneficially owned following the reported transaction.
3. The price in Column 4 is a weighted average price. The prices actually received ranged from $30.00 to $30.01. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing a weighted average price.
4. Reflects the most recent ESOP and 401(k) balance.
5. The restricted stock units will vest 1/3 on each of March 15, 2025, 2026 and 2027.
6. The restricted stock units will vest 1/3 on each of March 15, 2026, 2027 and 2028.
7. The restricted stock units will vest 1/3 on each of March 15, 2027, 2028 and 2029.
8. The options will vest 50% on each of February 28, 2024 and February 28, 2025.
/s/ Garrett F. Bishop, Attorney-in-Fact for Jagadeesh A. Reddy06/03/2026
** 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)