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JC
Jack Clark
CaliforniaTechnology
B
50.6
PBS
~$7.0B
Profile Summary
Jack Clark is a technology industry billionaire in California with an estimated net worth of ~$7.0B RTB. The data provided does not include business biography details, but it does show he made political contributions and is associated with multiple Clark Foundation filings FEC ProPublica 990.
Philanthropy
Three Clark Foundation filings are listed for tax year 2023, with combined grants paid of $32,331,377 and combined assets of $477,123,149 ProPublica 990. The largest filing is the Cooperstown, NY foundation, which reported $30,226,849 in grants paid and $448,977,655 in assets; the Portland, OR filing reported $1,793,500 in grants paid and $27,311,930 in assets; the Washington, DC filing reported $311,028 in grants paid and $833,564 in assets ProPublica 990.
Political Activity
The FEC data shows 100 contributions totaling $1,511.01 during the reported period FEC. Donations were split across party categories, with $140 to Democrats, $176.88 to Republicans, and $1,194.13 to PAC/other recipients FEC. Top recipients included ACTBLUE at $533.50, WINRED at $197.92, and the Republican National Committee at $100 FEC.
In the News
Recent news results in the provided feed include multiple articles about Anthropic, the AI company associated with Jack Clark, including coverage of labor market impacts of AI and reporting on the company’s response to the Department of War NewsAPI. The feed also includes a Forbes article about Anthropic cofounders and another Forbes item on the company’s response to Trump NewsAPI.
U.S. Presence
residenceSan Francisco, California
Philanthropy
$477.1MFoundation Assets
$32.3MGrants Paid
3Foundations
Clark FoundationCooperstown, NY
Corporate foundation (IRS NTEE T21)
Assets: $449.0MRevenue: $10.6MGrants: $30.2MTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerClark FoundationPortland, OR
Assets: $27.3MRevenue: $991KGrants: $1.8MTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerClark FoundationWashington, DC
Youth development (IRS NTEE O43)
Assets: $834KRevenue: $257KGrants: $311KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerPolitical Contributions
$2KTotal Contributed
100Contributions
2025–2025Date Range
By Party
Top Recipients
ACTBLUE$533.5
NEW YORK LIFE INSURANCE COMPANY POLITICAL ACTION COMMITTEE$300
WINRED$197.92
REPUBLICAN NATIONAL COMMITTEE$100
COX ENTERPRISES PAC (COXPAC) INC.$57.69
Recent News
242Total Articles
NCAA.comTop Source
NeutralAvg. Sentiment
Score Breakdown
B
50.6
Public Benefit Score
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Philanthropy65% weight
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
Transparency35% weight
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 6/23/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source.