Tempus AI Founder Eric Lefkofsky Files to Sell $16.5M in Stock
TEM sits 68% above its 52-week low of $40.77.
Summary
Tempus AI founder Eric Lefkofsky filed a Form 144 to sell 250,000 shares worth approximately $16.5 million, adding to a broader pattern of insider selling by his affiliated entities.
Key Events · Ownership and Investor Activity · TEM
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Founder Files to Sell $16.5M
Eric Lefkofsky, Tempus AI's founder, director, and 10% stockholder, filed a Form 144 to sell 250,000 shares with an approximate market value of $16,542,500.
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10b5-1 Plan Adopted March 8
The sale is executed under a Rule 10b5-1 trading plan adopted on March 8, 2026, indicating a pre-arranged disposition rather than a discretionary trade.
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Broader Distribution Pattern
Lefkofsky's affiliated entities (Blue Media, Gray Media, Lefkofsky Family Foundation, Vas.org Foundation) sold 582,500 shares for $27,835,778.01 in the past three months, reflecting ongoing insider distribution.
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Concurrent CEO Sale
This filing follows a concurrent disclosure that CEO Ryan Fukushima sold $1 million in stock under a separate 10b5-1 plan, adding to the insider selling trend.
Analysis · TEM · Technology
A significant insider distribution is unfolding at Tempus AI. Founder, largest shareholder, and director Eric Lefkofsky has filed to sell 250,000 shares worth approximately $16.5 million. When combined with the $27.8 million in sales by his affiliated entities over the past three months, the pattern of ongoing distribution by the company's most prominent insider warrants attention. The sale is executed under a 10b5-1 plan adopted on March 8, 2026, indicating it was pre-planned, but the sheer size of the transaction is notable.
How filings like this one have moved
In the 30 days to Aug 25, 2026, 37.4% of the 3413 measured filings Wiseek scored 8 moved their stock by 5% or more by the next session's close. The median move was 0.00%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, TEM was trading at $68.41 on NASDAQ in the Technology sector, with a market capitalization of approximately $12.4B. The 52-week trading range was $40.77 to $104.32. This filing was assessed with negative market sentiment and an importance score of 8 out of 10.