Tempus AI (TEM) CEO Thomas Schoenherr Sells Shares

What Happened
Thomas Schoenherr, CEO (Diagnostics) of Tempus AI (TEM), disposed of a total of 17,314 shares in open-market sales on August 18–19, 2026, generating roughly $929,991 in proceeds. The trades were executed at reported weighted-average prices ranging from $49.61 up to $61.23 across multiple transactions (individual reported transactions: 9,232 @ $49.61; 3,094 @ $55.97; 100 @ $56.47; 500 @ $57.94; 2,994 @ $59.97; 900 @ $60.45; 494 @ $61.23). These were sales (not purchases) and therefore are generally routine dispositions rather than a direct bullish signal.

Key Details

• Transaction dates: August 18–19, 2026; Form 4 filed Aug 20, 2026 (timely filing).
• Total shares sold: 17,314; total proceeds reported: approximately $929,991.
• Reported prices: weighted averages; ranges disclosed in footnotes: $49.35–49.99, $55.38–56.01, $57.51–58.26, $59.05–60.04, $60.08–60.77, and $61.16–61.25.
• Notable footnotes: F1 indicates a "sell to cover" of shares to satisfy statutory tax withholding on RSU vesting (a required, non‑discretionary sale). F3 notes one or more transactions were made under a pre-established Rule 10b5-1 trading plan (adopted Mar 3, 2026). F2 and F4–F8 explain weighted-average prices and per-trade price ranges.
• Shares owned after the transactions: not specified in the provided excerpt of the filing.

Context: These were outright sales (Form 4 code "S"). Sell-to-cover transactions and trades executed under a 10b5-1 plan are common ways insiders manage taxes and pre-planned liquidity; they do not necessarily indicate a change in view about the company.