Foundation Source Acquires Pacific Foundation Services
Foundation Source, a provider of philanthropic solutions for donors, nonprofits, institutions, and the wealth advisors who serve them, announced it has acquired Pacific Foundation Services (PFS), a foundation management organization based in San Francisco providing philanthropic strategy, grants management, and enhanced accounting support to some of the Bay Area's largest foundations. The transaction reinforces Foundation Source's position as a provider of foundation management services and increases its charitable assets under administration to nearly $40 billion. It also boosts annual deployment of charitable funds to more than $2.7 billion.
PFS's capabilities complement Foundation Source's flagship tech-enabled offering for private foundations and their advisors, allowing the company to better serve large, complex foundations. The acquisition also allows PFS clients to leverage modern, cloud-based tools that help make giving easier and more cost-effective and access a wider range of philanthropic solutions including specialized legal, compliance and tax support.
"We're thrilled to welcome the talented and dedicated team at Pacific Foundation Services to Foundation Source," said Joseph Mrak III, CEO of Foundation Source. "Together, this integration enhances our collective ability to support private foundations and their advisors with deep, strategic insight, sector knowledge and tailored guidance. With our best-in-class technology, we offer a uniquely comprehensive solution for mission-driven organizations that want to maximize impact."
The combined organization will offer an extensive range of philanthropic advisory services, including program strategy and design, and a set of services to deepen grantee relationships including sourcing and diligence of grantees, application support, grant structuring and impact measurement. Following the transaction, the CEO Charles R. Casey joined Foundation Source in a new leadership role along with the entire PFS team.
"We are both mission-driven organizations focused on streamlining operations to amplify impact and building trusted relationships with our clients and their grantee partners," said Mr. Casey, CEO of Pacific Foundation Services and incoming President of Premier Foundation Services at Foundation Source. "This partnership marks an exciting new chapter – one that enhances the giving experience for our clients and has the potential to leave a lasting and positive impact on the sector."
The acquisition follows several recent transactions as part of Foundation Source's long-term growth strategy. In April, the company acquired Giving Place, a software platform for family office giving programs and private foundations. Last year, it acquired Vennfi, the fintech powering donor-advised fund sponsor Charityvest, and PG Calc, the leader in planned giving software and services. Foundation Source is the only provider to deliver a suite of enterprise-grade technology, administration, and professional services across private foundations, donor-advised funds, planned gifts, and workplace giving making it the partner-of-choice for comprehensive philanthropic solutions.
"Pacific Foundation Services is a highly strategic addition to Foundation Source. It meaningfully expands our reach among large private foundations and strengthens the depth of programmatic and grantmaking support we can offer," said Lizzie Wintle, Director at GTCR. "It's our fourth strategic acquisition in 18 months and the combined platform is uniquely positioned to serve the evolving needs of the sector with scale, expertise, and impact."
Colchester Partners served as an advisor to PFS in the transaction, which was completed on June 4, 2025. Terms of the acquisition were not disclosed.
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