Insider Activity at Tempus AI: A Close‑Knitted Story of Confidence and Caution
The latest 4‑form filing shows CEO and Chairman Eric Lefkofsky selling roughly 11 000 Class A shares at an average price of $69.83 on 25 August 2026, while a Rule 10b5‑1 plan also saw the sale of 681 shares at $70.58. Combined, the transactions represent a modest 0.5 % of his post‑sale holdings, leaving him with 150 681 shares. The sale is part of a broader pattern of frequent trading by Lefkofsky—over 30 transactions in the last two months alone—yet the average price paid in those trades remains within the 60‑70 $ band.
Implications for Investors
The volume of Lefkofsky’s trades is not unusual for a CEO with a large block of shares, especially given the company’s volatile valuation (52‑week high $104.32, low $40.77) and negative earnings ratio (-31.05). Investors should note that the trades are executed under a pre‑established Rule 10b5‑1 plan, which mitigates concerns about insider intent to ride on short‑term price movements. However, the timing—coinciding with a 6 % weekly rise—suggests a possible belief that the share price will plateau or decline, perhaps reflecting a shift in confidence about Tempus AI’s near‑term execution of its AI‑driven oncology platform.
What This Means for Tempus AI’s Future
Tempus AI is a high‑growth health‑tech company with a market cap of $11.94 billion, yet its price‑earnings ratio indicates it is still trading at a discount to earnings expectations. The consistent selling by the CEO, combined with the company’s recent Rule 144 filing to offload 250 000 shares, may signal that insiders anticipate a period of consolidation or that management is preparing for a potential capital raise. For the broader shareholder base, this could translate into a modest dilution risk and a signal that the company is still fine‑tuning its business model and investment strategy.
Profile of Eric Lefkofsky
Lefkofsky has been a prolific seller, executing over 30 trades in a single month with average prices hovering around $65‑$70. His holdings have fluctuated between 2.1 million and 15.3 million shares across several months, but the most recent balance of 150 681 shares is a small fraction of his total stake. His trading pattern suggests a disciplined approach: he adheres to Rule 10b5‑1 plans, sells in incremental blocks, and typically sells at prices slightly above the market close. This conservative style indicates a focus on risk management rather than opportunistic gains. Furthermore, the fact that his spouse and other family trusts hold significant stakes (up to 562 k shares) underlines a family‑controlled ownership structure that values long‑term stability.
Takeaway for Financial Professionals
For those monitoring Tempus AI, the insider activity signals a cautious yet measured stance from its leadership. The CEO’s trades are likely part of a broader liquidity‑management strategy rather than a harbinger of an impending downtrend. Investors should continue to track the company’s earnings guidance, product pipeline, and capital allocation decisions, as these factors will ultimately determine whether the stock can sustain its recent rally or revert to the broader market’s valuation expectations.
| Date | Owner | Transaction Type | Shares | Price per Share | Security |
|---|---|---|---|---|---|
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 11,167.00 | 69.83 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 681.00 | 70.58 | Class A Common Stock |
| N/A | LEFKOFSKY ERIC P (CEO and Chairman) | Holding | 2,098,130.00 | N/A | Class A Common Stock |
| N/A | LEFKOFSKY ERIC P (CEO and Chairman) | Holding | 406.00 | N/A | Class A Common Stock |
| N/A | LEFKOFSKY ERIC P (CEO and Chairman) | Holding | 5,715,203.00 | N/A | Class A Common Stock |
| N/A | LEFKOFSKY ERIC P (CEO and Chairman) | Holding | 206.00 | N/A | Class A Common Stock |
| N/A | LEFKOFSKY ERIC P (CEO and Chairman) | Holding | 4,284,797.00 | N/A | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 760.00 | 64.03 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 2,168.00 | 64.70 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 3,944.00 | 65.98 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 4,218.00 | 67.01 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 10,282.00 | 68.13 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 22,495.00 | 68.97 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 12,851.00 | 69.83 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 782.00 | 70.58 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 1,789.00 | 64.03 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 5,093.00 | 64.70 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 9,262.00 | 65.98 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 9,935.00 | 67.01 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 24,161.00 | 68.13 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 52,784.00 | 68.97 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 30,139.00 | 69.83 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 1,837.00 | 70.58 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 101.00 | 64.03 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 284.00 | 64.70 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 515.00 | 65.98 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 578.00 | 67.01 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 1,365.00 | 68.13 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 2,887.00 | 68.96 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 1,668.00 | 69.83 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 102.00 | 70.58 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 660.00 | 64.03 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 1,883.00 | 64.70 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 3,429.00 | 65.98 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 3,649.00 | 67.01 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 8,926.00 | 68.13 | Class A Common Stock |
| 2026-08-25 | LEFKOFSKY ERIC P (CEO and Chairman) | Sell | 19,605.00 | 68.97 | Class A Common Stock |




