Eric P. Lefkofsky, CEO and Chairman of Tempus AI (TEM), has filed 161 Form 4 transactions, all of them open-market sales. The filings show no purchases, no option exercises, and no acquisitions of any kind. The total value of his sales is $423.7 million, concentrated entirely in TEM stock. The pattern is one-directional: Lefkofsky has been a consistent seller, with 25 sales in the most recent reporting window alone.
The recent trades cluster on two dates. On August 25, 2026, he executed 22 separate sales ranging from $6,467 to $3.6 million, with the largest single transaction at $3,640,512.48. The day's total came to roughly $10.1 million. On September 17, 2026, he filed six more sales, including one for $9.9 million and another for $4.2 million, bringing that day's total to about $15.2 million. The smallest recent sale was $6,467 on August 25, and the largest was $9,935,443.32 on September 17.
The filings contain no code "P" transactions, meaning Lefkofsky has not bought TEM shares on the open market during the covered period. His activity is entirely on the sell side, and the dollar values have increased in the most recent filing date. The data shows a CEO reducing his stake in the company through routine open-market sales, with no offsetting purchases.
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