PE Firm · Capital Allocator

Frontenac Company

Medium
Chicago, United States · Founded 1971 · AUM Not mentioned · Website
BuyoutLower Middle MarketConsumerIndustrialServicesNorth America
Last verified
8/20/2026

Firm Overview

4
Portfolio tracked
3
Sectors
1
Regions
8/20/2026
Last verified

Frontenac is a Chicago-based private equity firm that focuses on investing in lower middle market buyout transactions.

Founded in 1971 by Martin J. Koldyke, Frontenac is a long-standing private equity firm based in Chicago. The firm specializes in lower middle market buyout transactions, partnering with established operating leaders to build market-leading companies. Over its 50-year history, the firm has worked with over 350 owners of mid-sized businesses to navigate transitions involving liquidity, management enhancement, and growth planning.

A central element of Frontenac's strategy is its trademarked CEO1ST methodology. This executive-centric approach identifies and supports seasoned operating executives to lead acquisitions and drive operational excellence. Under this model, these partners may serve as CEO, Chairman, or lead director of the portfolio companies, helping to execute a specific investment thesis and pursue transformational growth.

Founded1971
HeadquartersChicago, United States
AUMNot mentioned
Target investmentLower middle market
Employees32
StrategiesBuyout, Lower Middle Market
Sector focusConsumer, Industrial, Services
Geographic focusNorth America

Leadership

Martin J. Koldyke
Founder
Founder of Frontenac and former chairman.
Walter Florence
Managing Partner / Senior Team Member
Ron Kuehl
Managing Partner / Senior Team Member
Michael Langdon
Managing Partner / Senior Team Member
Joe Rondinelli
Managing Partner / Senior Team Member
Elizabeth Williamson
Managing Partner / Senior Team Member

Portfolio Companies

CompanySectorStatusWebsite
GW HoldingsExited
H-E Parts InternationalCurrent
Portfolio GroupFinancial ServicesExited
SIGMACurrent

Source: http://www.frontenac.com/portfolio

Portfolio Web Readiness

Not yet assessed

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Sources

This profile is based on publicly available information and may be incomplete or outdated. PE Firm Index is not affiliated with Frontenac Company and does not provide investment advice.

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