# Frontenac Company

Frontenac Company is a Multi Family Office based in Chicago, United States.

## Overview

- **Organization type:** Multi Family Office
- **Headquarters:** Chicago, United States
- **Region:** North America
- **Address:** One South Wacker Drive, Suite 2980, Chicago, IL 60606, United States
- **Founded:** 1971
- **Assets under management:** 900 (Altss estimate)
- **Website:** frontenac.com
- **LinkedIn:** https://www.linkedin.com/company/frontenac

## Regulatory record

- **CRD number:** 156096
- **SEC file number:** 801-73503
- **Registration status:** APPROVED
- **Latest Form ADV filing:** 2026-03-16T05:00:00.000Z
- **Reports private funds:** Yes
- **Private funds reported:** 0
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/156096

## About

Frontenac Company was established in 1971 by Martin J. Koldyke. The firm originated from Koldyke's venture-capital activity and evolved into a multi-family office that aggregates capital from several entrepreneurial families. Frontenac pursues control buyouts and growth investments in the lower middle market. It targets companies with $5 million to $40 million of EBITDA and deploys equity checks between $50 million and $150 million. Asset classes include private equity, secondaries, and special situations. The firm maintains three industry teams covering consumer, industrials, and services. Confirmed holdings have included Portfolio Group, an outsourced financial-services provider to auto dealers that Frontenac acquired in 2012 and later sold to Capital Z Partners. Geographic focus remains North America. CEO1ST partners supply pre- and post-acquisition operating input while the Portfolio Resources Group implements functional playbooks. The firm employs an investment committee that includes Walter Florence, Ron Kuehl, Michael Langdon, and Elizabeth Williamson. Julie Bender serves as CFO and Chief Compliance Officer. Frontenac maintains its sole office in Chicago. No dated operational events from the past 24 months appear in public records. Frontenac's structure centers on a hybrid model that embeds former operators as CEO1ST partners who can assume board or interim executive roles. This arrangement creates direct operating leverage inside portfolio companies rather than relying solely on external managers or fund-of-funds commitments.

## Sectors

- Private Equity
- Consumer
- Industrials
- Services

## People

- Martin J. Koldyke — Founder and Retired Chairman
- Rodney L. Goldstein — Former Chairman and Managing Director
- Walter Florence — Managing Director and Investment Committee member
- Ron Kuehl — Managing Director and Investment Committee member
- Michael Langdon — Managing Director and Investment Committee member
- Elizabeth Williamson — Managing Director and Investment Committee member
- Julie Bender — CFO and Chief Compliance Officer

## Questions

### Who runs investment decisions at Frontenac Company?

An investment committee that includes Walter Florence, Ron Kuehl, Michael Langdon, and Elizabeth Williamson reviews opportunities. Martin J. Koldyke remains listed as founder and retired chairman.

### How does Frontenac Company source proprietary deal flow?

Frontenac maintains three industry teams and a network of CEO1ST partners who develop sub-sector theses and relationships before transactions. The firm also draws on members' affiliations with the Commercial Club of Chicago and Economic Club of Chicago.

### Does Frontenac Company participate in fund commitments or only direct deals?

Frontenac focuses on direct control investments and does not disclose participation in third-party fund commitments.

### What investment stages does Frontenac Company typically target?

The firm targets buyout and growth stages in companies with $5 million to $40 million of EBITDA.

### What is Frontenac Company's known posture on co-investments alongside external GPs?

Frontenac executes control investments directly and does not disclose a program of co-investments with external general partners.

## Related profiles

- [Fifth Avenue Family Office](https://altss.com/profile/fifth-avenue-family-office)
- [Quadro Capital Partners](https://altss.com/profile/quadro-capital-partners-pukas-family-office)

---

Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/frontenac-company

Maintained by Altss — https://altss.com — methodology: https://altss.com/methodology