Theodore Leonsis

Board Director

Director

Groupon, Inc.American Express Co Tempus AI, Inc.

Insider activity · 24 months0 buys5 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 1 saleJun 25 · 0 buys · 1 saleJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 3 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Companies

▲ Purchases (0 ops.)

—

▼ Sales (6 ops.)

€18.0M

Latest filing published 28 Aug 2025 for Tempus AI, Inc., €1.3M. Read the official filing

Filing timeline

BuySale

Theodore Leonsis

Insider track record

Disclosed buys

Disclosed sells

Not enough buy signals with a settled T+90 horizon to measure a track record yet.

Signal history

Theodore Leonsis: trading record in brief

Filings by Theodore Leonsis span 3 companies, the busiest being Tempus AI, Inc., Groupon, Inc. and American Express Co. The record holds 14 filings, for trades running from 15 June 2021 to 26 August 2025.

On the market, this insider has only sold: 6 sales, €18.0M in total. Outside the open market, there are 7 share grants and 1 option exercise. So far in 2025, the count stands at no purchases and 5 sales.

Most recently, on 28 August 2025, the filings show an open-market sale worth €1.3M in Tempus AI, Inc. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. US insiders must file a Form 4 within two business days of a trade. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.