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Sunstone Partners

Sunstone Partners

San Mateo, Californiasunstonepartners.com

Overview

Sunstone Partners is a growth-oriented private equity firm that invests in AI- and technology-enabled services and software companies. The firm seeks to partner with exceptional entrepreneurs, often as their first institutional capital partner, to help accelerate organic growth and fund acquisitions. Sunstone Partners has been recognized on Inc. magazine's “Founder-Friendly Investors” list in each of the last five years. This recognition is a testament to the firm's collaborative portfolio engagement approach aimed at enabling companies to thrive through support of the management team, active strategic guidance, and execution of operational best practices.

Year Founded

2015

Portfolio Companies

17

Investments

Sunstone Partners investments
CompanyDateStageLead
Peloton Consulting GroupMay 2026Private EquityLead
ClearwaterSep 2025Buyout/LBOLead
ProgenyHealth, LLCMay 2025Growth EquityCo-investor
Knowtion HealthAug 2024M&ACo-investor
AccuhealthJul 2024Corporate FundingLead

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

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Firmographic Details

HeadquartersSan Mateo, California
Year Founded2015

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