# Spencer Applegate

> Spencer Applegate is a technology operator and investor who built three software companies before becoming Vice President of Strategy & Business Operations and Chief of Staff to the CEO at Gainsight, the leading customer success platform. With a foundation in nuclear engineering from Georgia Tech and an MBA from Harvard Business School, he has moved fluidly between founding startups (Verusen, REscour, PainTheory), deploying capital at growth and buyout funds (M33 Growth, Pacific Lake Partners, Vector Capital), and now running strategy at a $1.25B enterprise SaaS company in San Francisco.

- **Role:** Chief of Staff, CEO & VP Strategy and Business Operations at Gainsight
- **Organizations:** Gainsight, Vector Capital, M33 Growth, Verusen, REscour, PainTheory, Pacific Lake Partners
- **Nationality:** American
- **Education:** B.S. Nuclear and Radiological Engineering (Summa Cum Laude), Georgia Institute of Technology, MBA, Harvard Business School
- **Known for:** Co-founded Verusen, which raised $25M Series B (total ~$40M) with customers including Georgia Pacific, ABInBev, Koch, and Southern Company, Co-founded REscour, a CRE data platform that was integrated into Colliers International, Co-founded PainTheory, a digital health startup serving interventional radiologists

## Career timeline

- **2010s** — Particle physics research at Georgia Tech and Lawrence Livermore National Laboratory
- **2012-2015** — Co-founded REscour, a data aggregation and analytics platform for commercial real estate professionals (later integrated into Colliers International)
- **2014** — Co-founded PainTheory, a digital health platform connecting musculoskeletal patients with pain specialists and interventional radiologists
- **2015** — Co-founded Verusen with Paul Noble, an AI-powered supply chain materials data management platform
- **2017-2020** — Growth equity investor at M33 Growth in Boston, leading platform investments in fintech, healthcare IT, and supply chain sectors
- **2018-2021** — Investing in search fund buyouts at Pacific Lake Partners, the largest institutional investor in the search fund ecosystem
- **2022** — Joined Vector Capital as Vice President in private equity, focused on transformative tech investments
- **2025** — Joined Gainsight as VP Strategy & Business Operations and Chief of Staff to CEO Nick Mehta
- **2025** — Continues as Chief of Staff under new Gainsight CEO Chuck Ganapathi as company pivots to Retention-as-a-Service (RaaS)

## Achievements

- Co-founded Verusen, which raised $25M Series B (total ~$40M) with customers including Georgia Pacific, ABInBev, Koch, and Southern Company
- Co-founded REscour, a CRE data platform that was integrated into Colliers International
- Co-founded PainTheory, a digital health startup serving interventional radiologists
- Graduated summa cum laude from Georgia Tech in Nuclear and Radiological Engineering
- Led multiple platform investments at M33 Growth in fintech, healthcare IT, and supply chain verticals
- Executed multiple buyouts of SME software businesses as investor at Pacific Lake Partners
- Appointed Chief of Staff to CEO at Gainsight, a $1.25B total-funded enterprise SaaS platform

## Latest updates

- **2025-08** — Gainsight transitions from Nick Mehta to Chuck Ganapathi as CEO; Spencer continues as Chief of Staff under new leadership
- **2025-04** — Nick Mehta announces Spencer Applegate as the new Chief of Staff to the CEO at Gainsight via LinkedIn video
- **2025** — Gainsight acquires Staircase AI, UpdateAI, and ModerateKit to accelerate its agentic AI capabilities - Spencer part of strategy team driving M&A

## Links

- LinkedIn: http://www.linkedin.com/in/sappleg
- Facebook: https://www.facebook.com/sappleg/

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Profile page: https://yespress.io/spencer-applegate
Published by YesPress — https://yespress.io
Last updated: 2026-05-15