Organization · Private Equity
Sunstone Partners
Sunstone Partners is a growth-oriented private equity firm based in San Mateo, California, specializing in technology-enabled services and software investments. The firm focuses on partnering with entrepreneurs to accelerate growth and fund acquisitions.
Overview
What Sunstone Partners does
What Sunstone Partners is
Sunstone Partners is a growth-oriented private equity firm based in San Mateo, California, specializing in technology-enabled services and software investments. The firm focuses on partnering with entrepreneurs to accelerate growth and fund acquisitions.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Private Equity
- Founded
- Founded in 2015
- Approximate age
- About 11 years
- Structured capabilities
- Funder
- Last reviewed
- March 5, 2026
Official channels
Find Sunstone Partners elsewhere
Open the official website or a supported primary organization account.
Capability profile
Sunstone Partners as a funder
Investment thesis
Sunstone Partners employs a thesis-driven, sector-focused approach to identify future industry leaders in technology-enabled services and software. The firm targets sectors benefiting from macro tailwinds and technology disruption.
Focus narrative
Sunstone Partners invests in majority and minority transactions in technology-enabled services and software businesses that have over $20 million in revenue and demonstrate a growth rate of over 20%. The firm targets sectors that benefit from macro tailwinds and technology disruption, including Cloud, Cybersecurity, Healthcare IT, and Marketing Tech.
Terms and economics
- Typical check
- $20,000,000
Focus and fit
- Regions
- North AmericaUnited States
Availability
- Currently deploying
- Not published
Portfolio and track record
Portfolio context
Sunstone Partners has a diverse portfolio that includes notable companies such as a company acquired by KKR, a company acquired by Rackspace, a company acquired by Cognizant, a company acquired by Towers Watson, a company acquired by AT&T, and a company acquired by CIOX Health.
Common questions
What to know about Sunstone Partners
Upseed classifies Sunstone Partners under the Private Equity organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
March 5, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.