What does CUSIP 578605107 represent in this 13F holders report?

CUSIP 578605107 is the security identifier for MEC - Mayville Engineering Company, Inc. - COMMON STOCK used to aggregate holder disclosures.

How many institutions held MEC - Mayville Engineering Company, Inc. - COMMON STOCK in Q2 2023?

86 institutional investors reported MEC - Mayville Engineering Company, Inc. - COMMON STOCK for Q2 2023. Use the holders table for investor-level position and value details.

Mayville Engineering Company, Inc. - COMMON STOCK (MEC)

CUSIP: 578605107

Q2 2023 13F Holders as of 30 Jun 2023

Security type / class: Equity / COMMON STOCK
Total 13F shares: 8,722,452
Total 13F value: $108,700,974
Share change: +852,154
Put/Call ratio: 6.4%
SEC-reported price per share: $12.46
Number of holders: 86
Value change: +$9,649,984
Number of buys: 53
Number of sells: 40
Shares outstanding: 25,603,402

Security key

578605107

Report period

Q2 2023

Institutions

Top holders

MEC full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 Mayville Engineering Company, Inc. SEC filings Mayville Engineering Company, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 578605107

Newer quarter: Q3 2025

Recent filing periods:

Q3 2026 Q3 2025

Ownership snapshot

Top reported holders of MEC - Mayville Engineering Company, Inc. - COMMON STOCK (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Allspring Global Investme...

Disclosed value leader

Allspring Global Investme...

Comparable rows

0/15

Latest evidence

31 Mar 2023

13F 3/4/5 Highest disclosed value: $39,897,884 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

Allspring Global Investments Holdings, LLC has the largest disclosed position value at $39.9M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Allspring Global Investments Holdings, LLC's linked filing trail.

Disclosed position value Top 5

Allspring Global Investments Hold... $39.9M

TOCQUEVILLE ASSET MANAGEMENT L.P. $8.49M

Robert D. Kamphuis $8.26M

VANGUARD GROUP INC $6.14M

AEGIS FINANCIAL CORP $4.95M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Allspring Global Investments Holdings, LLC	13F Company 13F	— denominator unverified	$39,897,884 2,674,121 shares	—	31 Mar 2023
TOCQUEVILLE ASSET MANAGEMENT L.P.	13F Company 13F	— denominator unverified	$8,485,750 568,750 shares	—	31 Mar 2023
Robert D. Kamphuis	3/4/5 Chairman, Pres. & CEO, Director 3/4/5	— mixed-class rows	$8,262,073 846,185 shares mixed-class rows	—	28 Feb 2022
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$6,140,072 411,533 shares	—	31 Mar 2023
AEGIS FINANCIAL CORP	13F Company 13F	— denominator unverified	$4,950,053 331,773 shares	—	31 Mar 2023
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	— denominator unverified	$4,328,485 290,134 shares	—	31 Mar 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

8,722,452

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2023 vs Q3 2025 Across Filers

Q3 2025 holders

103

Q2 2023 holders

Holder diff

-17

Investor	Q3 2025 Shares	Q2 2023 Shares	Share Diff	Share Chg %	Q3 2025 value	Q2 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend