Eric Lefkofsky, an officer, director, and 10% stockholder of Tempus AI, Inc., filed a Form 144 notice of proposed sale of 250,000 shares of Class A Common Stock on October 27, 2026, through broker J.P. Morgan Securities LLC on NASDAQ.

Key Highlights

  • Proposed sale size: 250,000 shares of Class A Common Stock, with an aggregate market value of $16,790,000, according to the filing.
  • Shares outstanding: The filing lists 175,390,967 shares of Class A Common Stock outstanding at the time of notice.
  • Rule 10b5-1 plan: The filing indicates a plan adoption date of March 8, 2026, with the approximate sale date listed as October 27, 2026.
  • Multiple affiliated sellers: The notice covers shares held by Blue Media, LLC (135,000 shares), Gray Media, LLC (57,500 shares), Lefkofsky Family Foundation (7,500 shares), and Vas.org Foundation (50,000 shares), all of which Lefkofsky is the authorized signatory for, per the filing's remarks.
  • Recent prior sales: The filing discloses sales totaling 540,000 shares across the four affiliated entities between July 28, 2026 and September 22, 2026, generating combined gross proceeds of approximately $55,813,276 as reported in the filing.
  • Share acquisition history: The securities to be sold were acquired through stock compensation (135,000 shares on January 22, 2025), direct investment (57,500 shares on September 24, 2017 and 7,500 shares on March 5, 2020), and donation (50,000 shares donated on December 4, 2025).

Lefkofsky's Affiliated Entities Propose October 2026 Tempus AI Share Sale

According to the Form 144 filed on October 27, 2026, Eric Lefkofsky - listed as an officer, director, and 10% stockholder of Tempus AI, Inc. (NASDAQ:TEM) - is proposing to sell 250,000 shares of Class A Common Stock at an aggregate market value of $16,790,000. The broker named in the filing is J.P. Morgan Securities LLC, located at 270 Park Avenue, 10th Floor, New York, NY 10017. The filing notes that the plan under Rule 10b5-1 was adopted on March 8, 2026.

The filing's remarks section clarifies that the proposed sale encompasses shares held across four entities: Blue Media, LLC (135,000 shares), Gray Media, LLC (57,500 shares), Lefkofsky Family Foundation (7,500 shares), and Vas.org Foundation (50,000 shares). Lefkofsky is identified as the authorized signatory for each entity. The shares proposed for sale were acquired through a mix of stock compensation from the issuer, direct cash investment, and donation, with acquisition dates ranging from September 24, 2017 to December 4, 2025, as disclosed in the securities-to-be-sold table.

The filing also discloses prior sales made within the past three months. Between July 28, 2026 and September 22, 2026, the four affiliated entities collectively sold 540,000 shares of Class A Common Stock. Individual transaction proceeds ranged from $315,468 for 7,500 shares sold by the Lefkofsky Family Foundation on July 28, 2026, to $10,876,976 for 135,000 shares sold by Blue Media, LLC on September 17, 2026, according to the filing's three-month sales table. These prior sales are required to be disclosed for aggregation purposes under Rule 144.

What Was Disclosed

Eric Lefkofsky filed a Form 144 on October 27, 2026, disclosing a proposed sale of 250,000 Tempus AI Class A Common Stock shares valued at $16,790,000, distributed across four affiliated entities under a Rule 10b5-1 plan adopted March 8, 2026.