James P. Tenbroek

Managing Partner at Growth Catalyst Partners

📍 DuPage County, Illinois, United States🔄 Updated September 2026💼 12 investments📅 32 years investing🗓 Last invested Jan 2003
VC🌍 United States
12
Total investments
1
Early stage
0
Mid stage
0
Late stage
32y
Years active

Portfolio

2 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Member of the Board
2003
One of the world’s largest enthusiast media companies, Active Interest Media (aimmedia.com) produces leading consumer and trade events, websites, magazines, and TV shows that reach millions of readers, fans, and attendees in 85 countries. Our brands include Anglers Journal, Popular Woodwoorking, Yachts International, Sail, Power & Motoryacht, Writer’s Digest, Log & Timber Home Living, Old House Journal, Numismatic News, Old Cars Weekly, Woodsmith, Garden Gate, and more. The company’s two divisions—the Home Group and Marine Group —also operate thriving B2B platforms, online universities, and retail events. Active Interest Media’s customers are smart, engaged, and loyal, and they look to our brands for trustworthy information and services that will inspire and enable them to enjoy their passions.
Member of the Board
1999
Experience · 16 entries
All (16)
Investments (12)
Board (12)
2015
Managing Partner
Oct 2015
Growth Catalyst Partners (“GCP”) is a middle market private equity firm focused on investing in the marketing, information, media and business services sectors, with an emphasis on companies with a tech-enabled orientation. With combined experience of more than 40 years investing in and managing over 150 mergers and acquisitions in its target sectors, GCP’s founders offer unique strategic expertise to help their portfolio companies and limited partners create extraordinary value. By partnering with existing management teams, GCP primarily targets investments in companies and sectors with strong growth potential through both organic initiatives as well as strategic acquisitions. Headquartered in Chicago, IL with an office in Rowayton, CT, GCP focuses on control investments based in the U.S.
2006
IVCA - Illinois Venture Capital Association
Board member, Past Chairman
Jan 2006
2003
Member of the Board
2003
One of the world’s largest enthusiast media companies, Active Interest Media (aimmedia.com) produces leading consumer and trade events, websites, magazines, and TV shows that reach millions of readers, fans, and attendees in 85 countries. Our brands include Anglers Journal, Popular Woodwoorking, Yachts International, Sail, Power & Motoryacht, Writer’s Digest, Log & Timber Home Living, Old House Journal, Numismatic News, Old Cars Weekly, Woodsmith, Garden Gate, and more. The company’s two divisions—the Home Group and Marine Group —also operate thriving B2B platforms, online universities, and retail events. Active Interest Media’s customers are smart, engaged, and loyal, and they look to our brands for trustworthy information and services that will inspire and enable them to enjoy their passions.
LDMI Telecommunications
Member of the Board
2003
2002
V-SPAN
Member of the Board
2002
Show all 16 entries ↓
Investment activity
1994–2003 · 12 investments
19941199511997219983199922002120032
Recent (last 2 years)Earlier