Quick Takeaways
- Theodore Leonsis has 3 issuer positions tracked on this page.
- Estimated disclosed ownership value: $22,219,514.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Theodore Leonsis
- Location
- New York, NY
- Summary
- The estimated net worth of Theodore Leonsis is at least $22,219,514 dollars as of 07 May 2026. Theodore Leonsis is the Director of AMERICAN EXPRESS CO and owns shares of AMERICAN EXPRESS CO (AXP) stock worth about $9.19M. Theodore Leonsis is the Director of Groupon, Inc. and owns shares of Groupon, Inc. (GRPN) stock worth about $7.07M. Theodore Leonsis is the Director of Tempus AI, Inc. and owns shares of Tempus AI, Inc. (TEM) stock worth about $5.96M.
- Signature
- /s/ James J. Killerlane III, attorney-in-fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
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What Changed
- Largest disclosed position: AMERICAN EXPRESS CO ($9,193,379).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Theodore Leonsis
AXP
Forms 3/4/5
AMERICAN EXPRESS CO
- Relationship
- Director
- Holdings value
- $9,193,379
- Past year net change
- Change %
- Report period
- 05 May 2026
GRPN
Forms 3/4/5
Groupon, Inc.
- Relationship
- Director
- Holdings value
- $7,067,338
- Past year net change
- Change %
- Report period
- 12 Jun 2025
TEM
Forms 3/4/5
Tempus AI, Inc.
- Relationship
- Director
- Holdings value
- $5,958,797
- Past year net change
- -$18,520,176
- Change %
- -76%
- Report period
- 26 Aug 2025
Insider Transactions Reported by Theodore Leonsis:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.