Sergey Brin Family Foundation

The Sergey Brin Family Foundation is one of the most unusual mega-foundations in American philanthropy: an entity with $4.3 billion in assets and $689 million in annual giving (2024) that maintains no website, no public communications, and accepts zero unsolicited proposals. This is by design. Brin's grantmaking reflects intensely personal convictions — his mother has Parkinson's disease, explaining why that research dominates the portfolio — and a Silicon Valley engineer's preference for measurable, scalable outcomes over broad systemic initiatives.

The foundation operates through Bayshore, Brin's family office, with Ashley Anderson serving as managing director of philanthropy. Pacific Foundation Services at 1660 Bush Street #300 in San Francisco handles administrative functions. Leadership is lean: Sergey Brin (Director & President), Tara Farnsworth (Treasurer), and Robert Brown (Secretary). No staff compensation appears on any 990-PF filing — this is a skeleton-crew operation that deploys capital at unprecedented scale.

Organizations that currently receive Brin funding generally share three traits: they are mid-to-large in size, they have deep technical or scientific credibility, and they were either introduced by a trusted intermediary or were already prominent in a field Brin cares about personally. The Michael J. Fox Foundation ($626M+ cumulative), Stanford ($161M+), and UCSF ($139M+) are relationship-driven partnerships, not competitive awards.

For organizations outside this existing network, the strategic question is not "how do I apply" but "how do I become visible to this funder's trusted network." The most viable pathways are: (1) a project or affiliation with ClimateWorks Foundation, which serves as Brin's primary climate re-grantor and strategy partner; (2) alignment with MJFF's ASAP Initiative for Parkinson's-adjacent CNS research; (3) fiscal sponsorship through Multiplier or Windward Fund, both of which have received direct SBFF grants; and (4) a connection through UC Berkeley CITRIS or UCSF, which have multi-grant relationships. Cold outreach will not succeed.

The Sergey Brin Family Foundation has grown from a $2.4M grantmaker in 2015 to one dispensing $1.1 billion annually in 2025 — a 45,000% increase in a decade. The trajectory is steep and accelerating: $156M (2019), $329M (2020), $202M (2021), $718M (2022), $452M (2023), $689M (2024), and $1.1B (2025 per reporting). The anomalous dip in 2021 reflects timing of stock contributions, not a strategic pullback.

Across 638 recorded grants totaling $1.97 billion, the average grant is $3.09 million — but this figure is skewed by many smaller awards and a handful of colossal ones. In practice, the foundation writes enormous checks to a small number of anchor partners: the Michael J. Fox Foundation alone has received 27 grants totaling $626 million. More typical major-partner grants run $10M–$50M per year, with re-grantors like Climate Imperative receiving $40M–$49M single awards.

By program area, Parkinson's research consumes roughly 40–50% of annual giving ($281M in 2024), making SBFF the single largest private funder of Parkinson's research globally. CNS research (autism, bipolar disorder) adds another 10–15% ($98M in 2024). Climate change and clean energy has grown to approximately 33–35% of giving ($232–243M in 2024), focused on hard-to-abate sectors, clean grids, and green shipping. The remaining 10–15% is scattered across pandemic response (historically), Bay Area community grants, humanitarian relief, and scientific infrastructure (Breakthrough Prize, Caltech, La Jolla Institute).

Geographically, 51% of grants by count go to California-based recipients (327 of top 638), with New York second (93 grants, 15%), DC third (44 grants, 7%), and Maryland (23), Virginia (19), and Massachusetts (13) rounding out the top states. International grantmaking has been episodic — dominated by Ukraine relief in 2022–2023 ($50M+) and vaccination work in Vanuatu ($7.7M).

The following table places the Sergey Brin Family Foundation against its closest asset-sized peers, all clustered between $4.3B and $4.5B in assets:

The most striking data point in this comparison is distribution rate. Brin's foundation distributed $689M against $4.31B in assets in 2024 — a payout rate of approximately 16%, more than triple the IRS 5% minimum and roughly 4–5x what most peers distribute annually. This reflects Brin's apparent intention to deploy capital aggressively rather than build a perpetual endowment. In contrast, the Simons Foundation — the closest scientific peer — distributes roughly 9% of assets annually. The California Endowment distributes at closer to 4–5%. For grant seekers, Brin's high velocity means money is genuinely moving, but the preselected-only policy means access remains tightly gated regardless of the scale of giving.

The headline story for 2024–2025 is scale. The foundation nearly doubled its grantmaking in 2024 ($699M, up 86% from $452M in 2023) and surpassed $1.1 billion in 2025 — a level that places Sergey Brin among the five or six largest living philanthropists in the United States by annual giving, alongside Bill Gates, MacKenzie Scott, and a handful of others.

In 2024, the Michael J. Fox Foundation received $253 million across 17 awards, the largest of which were designated for the ASAP Initiative (Aligning Science Across Parkinson's), the PATH to Prevention Platform Study, and the LRRK2 Investigative Therapeutics Exchange — all multi-year, multi-institution coordinated research programs. Climate Imperative Foundation received $49 million for general operating support in 2024, and the U.S. Energy Foundation received $31.5 million across three grants.

In 2025, Brin made two major Alphabet Inc. stock donations: $700 million in May and $1.1 billion in November, both directed to Catalyst4, his 501(c)(4) advocacy vehicle focused on climate and CNS disease. This restructuring — separating advocacy dollars (Catalyst4) from charitable dollars (SBFF) — signals a more sophisticated two-vehicle strategy for his philanthropic program.

On governance, Robert Brown replaced Michael Brin (Sergey's father) as Secretary in late 2022 — a notable transition that may indicate a mild formalization of the foundation's structure, though the inner workings remain opaque to outside observers.

The foundational fact for any grant-seeker to internalize is this: the Sergey Brin Family Foundation does not accept unsolicited proposals and has explicitly indicated that contributions go only to preselected charitable organizations. This is not a formality — there is no application portal, no grant cycle, no RFP process, and no staff assigned to read inbound inquiries. Pacific Foundation Services, the administrative address, is a back-office operation.

That said, indirect access strategies do exist for organizations operating in the right domains:

• For climate organizations: Apply to ClimateWorks Foundation's programs directly. ClimateWorks has received $20M+ from SBFF and serves as a trusted re-grantor for the Brin portfolio. Getting into ClimateWorks' grantee network puts your organization inside the ecosystem Brin's team monitors. Similarly, Multiplier (which received $18.3M) and Windward Fund ($22M) serve as fiscal sponsors for climate projects that have received SBFF dollars.

• For Parkinson's and CNS researchers: The Michael J. Fox Foundation's ASAP Initiative, the SPARK at Stanford program, and UCSF's CNS research programs are all documented conduits for Brin funding. Institutional affiliations here — postdocs, collaborative grants, co-PI arrangements — put researchers inside the trusted network.

• Timing and signals: Brin's giving has historically surged following major stock price appreciation in Alphabet. Watch for large charitable stock donations by Brin (typically reported in SEC filings or philanthropy press) — these precede spikes in grantmaking. 2022 and 2024 were both heavy stock-contribution years, followed by elevated grantmaking.

• Relationship language: If you do reach a contact in the network, emphasize scientific rigor, scalability, and measurable outcomes. Avoid vague impact language. Brin's team, per public statements, prizes organizations capable of "moving the needle" on under-addressed problems at scale.

• What not to do: Do not cold-call Pacific Foundation Services. Do not send a letter of inquiry to the address on file. Do not attempt to reach Sergey Brin directly through LinkedIn or conference appearances — this is not how these decisions are made.