Tempus AI insiders dump $240M as stock slides near 52‑week low

Over the last year Tempus AI, Inc. (TEM) has experienced an extreme imbalance between insider purchases and disposals. Twelve buy transactions totaling $2,739,181 were recorded, all executed by a single 10 % owner, while 184 sell transactions moved $240,751,512. The resulting buy‑sell ratio of 0.01x sits well below the 0.2x threshold that flags heavy insider selling. Such a ratio is rare for a company of Tempus AI’s size and suggests that insiders are overwhelmingly exiting positions.

The concentration of sales in the C‑suite amplifies the signal. The chief executive officer alone executed 104 sales worth $200,148,947, accounting for roughly 82 % of all insider sell value. The chief financial officer, chief operating officer, and other senior officers together contributed an additional $18.3 million, while directors added $22.4 million. The largest single trade was a director’s sale of 184,116 shares for $12,444,400 on 11 June 2025. No C‑suite member recorded any purchases during the period, underscoring a one‑sided disposition trend.

Market metrics reinforce the bearish backdrop. Tempus AI’s share price sits at $43.62, just 3 % above the 52‑week low, and the relative strength index is 32, indicating oversold conditions. The year‑to‑date return is –26.1 %, and the stock has lost ground despite a market‑cap of $7.6 billion. While a low RSI can sometimes precede a rebound, the magnitude and persistence of insider selling outweigh any short‑term technical bounce.

Temporal analysis shows that the selling pressure was not confined to a single event but persisted across multiple months. The most pronounced spike occurred in February 2025, when reported sell volume reached $446.6 million—far exceeding any other month and dwarfing the total 12‑month sell figure reported in the summary. Even after that peak, monthly sell totals remained in the $10‑30 million range through the end of 2025 and into early 2026, indicating a sustained exit strategy rather than an isolated compensation‑driven dump.

The lone buying activity came from a 10 % owner who invested $2.74 million across 12 transactions, a modest amount relative to the scale of disposals. No cluster buying—defined as three or more insiders buying within a 30‑day window—was observed, eliminating any counter‑signal of coordinated confidence.

Taken together, the data paint a picture of insiders, especially top executives, shedding large portions of their holdings while the stock languishes near its historical low. Investors should weigh this heavy insider outflow against the company’s fundamentals and consider the possibility that the leadership’s actions reflect expectations of further downside risk.