Portfolio Companies

Topanga Partners Venture Fund

Topanga Partners is a private equity firm based in Pittsburgh that invests in early and mid-stage technology companies focused on product technology, software-as-a-service (SaaS), and healthcare. In addition to passive venture investments, we also consider M&A transactions, recapitalizations, and Alpha/Beta stage investments.  Depending on size and stage, we can also provide operational and strategic services to mitigate risk to investors, drive capital efficiencies, and build enterprise value. 

Lead Partner

JOHN HATHAWAY, Managing Director

John is the Founder and Managing Partner of Primerock Capital, LLC, a Pittsburgh based private equity firm.  He has over 20 years of experience in asset management, mergers and acquisitions, sales and marketing, and finance. John serves on the Boards of several privately held companies, and through Primerock Capital he maintains a vast network of co-investors.

About Our Portfolio Companies


Cosmitto is a full-time, in-house team of content writers, social media managers, email marketers, and digital strategists able to partner with internal corporate teams or outside agencies.


Nestigator is an award winning online platform used by over 80,000 real estate agents nationwide.  Nestigator makes Home Buying and Selling easier by connecting consumers with local real estate experts ready to assist on demand.


UpContent provides its corporate customers with a content discovery tool that helps marketing teams drive relevant and meaningful conversations with their own customers and followers around the clock.

sharp edge labs

Sharp Edge is bringing a new class of targeted biosensors to drug discovery and trafficking biology. Fluorogenic Activating Modules (or FAMs)* provide a more accurate and detailed detection method for cellular trafficking that is amendable to high-throughput screening and more detailed follow-up.