Theodore Leonsis
Profile Summary
Theodore Leonsis is a Maryland-based U.S. sports industry billionaire born in 1956, with an estimated net worth of ~$3.9B RTB. SEC records show 143 insider filings tied to his personal account, and the filings include Forms 4 and 144, which are standard SEC reports used to disclose insider transactions and planned sales SEC EDGAR.
Business & SEC Activity
SEC records connect Theodore Leonsis to Tempus AI, Inc. and Groupon, Inc. SEC EDGAR. The filing history includes 143 insider filings, with recent activity in 2025 and 2026, including Form 4 reports and Form 144 notices; Form 4 reports disclose changes in insider ownership, while Form 144 is used to report an intended sale of securities SEC EDGAR.
Philanthropy
The Leonsis Foundation Inc reported $20,201 in total assets in tax year 2023, with $1 in revenue, $0 in expenses, and $0 in grants paid ProPublica 990. Across the foundation data provided, total grants paid were $0 and total foundation assets were $20,201 ProPublica 990.
Political Activity
From 2016-09-06 to 2024-10-08, Theodore Leonsis made 100 FEC-recorded contributions totaling $410,516.13 FEC. The largest recipient listed was HILLARY VICTORY FUND at $108,412.92, and the party breakdown shows $207,000.22 to Democratic recipients, $6,600 to Republican recipients, and $195,012.92 to PAC/Other FEC.
In the News
No validated GDELT news articles were returned for this profile in the provided data NewsAPI.
U.S. Presence
Philanthropy
Political Contributions
By Party
Top Recipients
SEC Filings
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
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 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.