Leonsis Theodore — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Leonsis Theodore has filed 3 SEC Form 4 filings across 3 companies in the last 90 days — selling. Lifetime open-market sales: $21.09M.

Profile

Theodore Leonsis is an American businessman, investor, and philanthropist, best known as the founder and CEO of Monumental Sports & Entertainment, which owns the Washington Capitals and Washington Wizards. He has also been involved in various technology ventures and is a prominent figure in the sports and entertainment industry.

Board memberships

• Monumental Sports & Entertainment
• Tempus AI, Inc.

Awards & honors

• Founder of Monumental Sports & Entertainment
• Owner of Washington Capitals
• Owner of Washington Wizards

Recent Transactions

Companies — Last 90 Days

• Groupon, Inc. (GRPN) — 1 filings, last 2026-06-15
• Tempus AI, Inc. (TEM) — 1 filings, last 2026-05-27
• AMERICAN EXPRESS CO (AXP) — 1 filings, last 2026-05-07

Frequently Asked Questions

Who is Leonsis Theodore?

Theodore Leonsis is an American businessman, investor, and philanthropist, best known as the founder and CEO of Monumental Sports & Entertainment, which owns the Washington Capitals and Washington Wizards. He has also been involved in various technology ventures and is a prominent figure in the sports and entertainment industry.…

How many SEC Form 4 filings has Leonsis Theodore submitted recently?

3 primary Form 4 filings in the last 90 days, covering 3 companies.

Has Leonsis Theodore been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 4 open-market sales ($21.09M) across all tracked filings.

Where can I see all of Leonsis Theodore's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

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