Jack Clark
Profile Summary
Jack Clark is a California-based technology billionaire with an estimated net worth of ~$7.0B. RTB
Business & SEC Activity
Clark is identified in the technology industry. RTB
Philanthropy
Three Clark Foundation entities reported combined assets of $477.1 million and $32.3 million in grants paid for tax year 2023. ProPublica 990 The largest reported foundation had $449.0 million in assets and paid $30.2 million in grants; Form 990 is an annual IRS filing that reports a nonprofit's finances and activities. ProPublica 990
Political Activity
The available FEC data covers only the most recent 100 contributions and represents at least 100 federal contributions; its $1,511.01 total and party breakdown are not a complete giving history. In this sample, contributions were listed as $140 to Democrats, $176.88 to Republicans, and $1,194.13 to PACs or other recipients, with the largest listed recipient being ActBlue at $533.50. FEC
U.S. Presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
Political Contributions
These figures cover the 100 most recent federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.
By Party (in the sample)
Top Recipients (in the sample)
Matched by name only. These are the donations the FEC lists under this person’s name — so a different person with the same name can show up here too.
Score Breakdown
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.
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
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 8/31/2026 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.