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


InClinica is a global, clinical contract research organization (CRO) specializing in diabetes along with other multiple disease states, drug targets, and device technologies, conducted across all stages of clinical trials. InClinica is particularly strong at assisting small to mid-sized companies who are entering first-in-human and phase 2 studies, or who need to generate data related to 510k clearance, a de novo 510k application, or a PMA.


Postamo is an online platform that makes it fast and easy for real estate agents to connect with home sellers and buyers through Facebook, Twitter, and LinkedIn. Postamo gives agents the opportunity to showcase their local expertise, listings, brand and more so they can contribute to their community and grow their business.

Health eTools

Health eTools is an electronic health records (EHR) system created specifically for school nurses using Human Centered Designed. Serving more than 500 schools across the county, Health eTools works in conjunction with a school district’s existing Student Information System to help school nurses confidentially track, manage and report on the health of their student population.


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.

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.