🦊/Investors

Wynnchurch

Private equity

Rosemont · Growth · 59 people tracked

Also known as WYNNCHURCH CAPITAL, L.P.

Find your way into Wynnchurch

895 people in our graph share verified history with the Wynnchurch team — schools, employers, funds. One of them is your warm intro.

Trevor Kienzleunlockedknows John A. Hatherly · together at GE Capital (overlapped)
×2knows the team · via General Electric Capital Corporation
knows the team · via GE Capital
knows the team · via University of Chicago
knows the team · via Lincoln International
knows the team · via UC Santa Barbara
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Investment thesis

Wynnchurch focuses on middle-market companies, seeking to partner with market leaders that have defensible positions and strong customer relationships. The firm targets businesses whose strengths and opportunities align with its own expertise and experience. Its approach is built on four principles: open and honest communication, genuine partnership with portfolio company management, intellectual curiosity to deeply understand each business, and a long-term investment horizon aimed at building companies for sustained success. Working at the board level, the firm emphasizes collaboration, mutual respect, and clear objectives, and prides itself on the ability to close transactions quickly and as planned.

Source: firm website, verified Sep 15, 2026.

Stage
Growth
Check
$50M – $750M
HQ
Rosemont, US
Instruments
Equity
Founded
1999
AUM
$9.1B
Tracked investments
30

Team · 59 people

from the firm's website & curated & public directories
Christopher P. O’Brien· Managing Partner
Frank G. Hayes· Managing Partner
Greg B. Gleason· Managing Partnerin
John A. Hatherly· Managing Partnerin
Brian R. Crumbaugh· Partnerin
Erin Murphy· Partnerin
Paul Ciolino· Partner
Steve Yan· Partnerin
JD Frank· Principalin
Kevin Hanley· Principalin
Michael MacKay· Principalin
Alex DeAraujo· Managing Director
Alex Dudek· Senior Associatein
Alexa Neri-Tomazin· Administrative Assistant
Annie Masciopinto· Senior Associate
Ben Cherry· Vice Presidentin
Brian R. Riordan· Managing Directorin
Carl R. Howe· Managing Directorin
Chris Waldock· Vice Presidentin
Cole Pospesel· Vice Presidentin
Dave Venker· Managing Directorin
Drew Scielzo· Managing Director
Duncan S. Bourne· Managing Directorin
Evan Kluck· Senior Associate
Jack Page· Associatein
Jessica Exposito· Executive Assistantin
Kyle Millburg, CPA· Senior Accountant
Maggie Kazimierczuk· Senior Accountant
Michelle Cormier· Canada Region Advisor
Mike Yerkes, CPA· Accounting Manager
Peter Alexander· Senior Associatein
Ryan Flynn· Staff Accountant
Scott Farrell· Operating Partner (In Memoriam)

Listed under In Memoriam as an Operating Partner.

Shannon Brucci· Director of Marketing and Special Events
Stephen M. Welborn· Managing Director
Wyatt Dennis· Associatein
Yuri Douglas· Controller
Roy E. Sroka· Executive Officer
Terry M. Theodore· Executive Officer

What they invest in

from 5 of 30 portfolio companies

Advanced Manufacturing ×5Logistics & Supply Chain ×3Mobility & Transportation ×2New Materials ×2Cleantech ×1Construction Tech ×1Energy ×1Hardware ×1

HQs:United States×4Canada×1

Investments · 30 tracked

founders shown can be your intro path
Astro Shapesastroshapes.com

Astro Shapes manufactures custom-finished aluminum extrusions for industrial and commercial markets that require high quality and specialized finishing.

Advanced ManufacturingConstruction TechMedical DevicesNew MaterialsStruthers, US

Bob Cene, Sr.

Labrielabriegroup.comin

Labrie Environmental Group manufactures waste management equipment including garbage trucks, compactors, and related machinery under the Labrie, Leach, and Wittke brands for the solid waste industry in North America.

Advanced ManufacturingCleantechMobility & TransportationSt-Romuald, CA

Michael Eastabrookin

MSHS Pacific Power Groupmshs.comin

SCN is a network of independent service companies providing specialized support to the maritime and energy industries across three continents, with over 100 years of combined experience.

Advanced ManufacturingEnergyLogistics & Supply ChainMobility & TransportationHamburg, US

NABRICO Marine Productsnabricomarine.comin

NABRICO Marine Products manufactures barges and marine hardware for transport on U.S. inland waterways, including flat-deck and hopper barges for dry cargo and tank barges for liquid cargoes.

Advanced ManufacturingHardwareLogistics & Supply ChainAshland City, US

Reagent Chemicalreagentchemical.com

Reagent Chemical is the largest supplier and logistics platform for hydrochloric acid distribution in North America, operating a nationwide network of over 45 facilities, 3,000+ railcars, and a fleet of trucks and trailers.

Advanced ManufacturingLogistics & Supply ChainNew Materials

Sternosterno.com

Provider of portable food-warming and tabletop solutions.

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

AlleguardAllianceArcherCharter IndustriesFcaHydraulic TechnologiesLathamLogistikMattress WarehouseMidland IndustriesOrs NascoOwenPortfolio a2Portfolio bioriginPortfolio emsPortfolio floworksPortfolio issPortfolio m2sPortfolio nabricoPortfolio pfmPortfolio RosboroPrincipal IndustriesTrimliteWC Strategic Opportunity

Fund performance · per public LP disclosures · 6

as of Nov 2025
FundVintageCommittedNet IRRTVPIDPI
Wynnchurch Capital Partners VI, L.P.LPs: Los Angeles County Employees Retirement Association, Hawaii Employees' Retirement System, Maine Public Employees Retirement System +3 more20231.14x0.00x
Wynnchurch Capital Partners V LPLPs: Los Angeles County Employees Retirement Association, Nebraska Investment Council, Maine Public Employees Retirement System +2 more20209.8%1.30x0.06x
Wynnchurch Capital Partners V PELPs: Maine Public Employees Retirement System20201.28x
Wynnchurch Capital Partners IVLPs: Maine Public Employees Retirement System, Nebraska Investment Council, Los Angeles City Employees' Retirement System201524.4%2.88x1.79x
Wynnchurch Capital Partners IV PELPs: Maine Public Employees Retirement System201431.7%2.27x0.33x
Wynnchurch IVLPs: San Diego City Employees' Retirement System201424.4%2.85x1.78x

Source: public limited-partner disclosures (CalPERS, CalSTRS). Net IRR / TVPI / DPI as reported by the limited partner; a fund's early-year IRR is an interim estimate (J-curve).

Frequently asked questions

How many investments has Wynnchurch made?
Wynnchurch has 30 tracked investments.
What stage does Wynnchurch invest at?
Wynnchurch invests at the Growth stage.
What is Wynnchurch's typical check size?
Wynnchurch typically writes checks of $50M – $750M.
What sectors does Wynnchurch focus on?
Wynnchurch focuses on Advanced Manufacturing.
Where is Wynnchurch located?
Wynnchurch is headquartered in Rosemont, US.

Images

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