The cluster is too small relative to market cap to be a strong bearish signal. Monitor for any upcoming 8-K (earnings, guidance, or material agreement) that might explain the timing. If the CEO continues selling in the next 30 days at a higher run rate, the signal would strengthen.
Price Chart
Executive Summary
Four Tempus AI insiders, including CEO Eric Lefkofsky and three other C-suite executives, sold a total of $2.0M in open-market sales over a one-week window (Aug 21–28). While the dollar amount is modest relative to the $11.2B market cap (~0.018%), the cluster involves the CEO and multiple business-unit CEOs selling simultaneously, which is notable. However, per academic literature, cluster sales are a weak directional signal and are often liquidity-driven (e.g., post-IPO lockup expirations, tax planning, or 10b5-1 plans). The historical calibration shows score-6 reports in this segment have a 55% win rate with a net positive alpha, but the cluster's small size and lack of a clear bearish catalyst (no recent earnings miss, no restatement, no offering) keep the impact moderate.
Key Financial Metrics
Key Facts
- CEO Eric Lefkofsky sold 8.9K shares for $608K on Aug 25
- Data CEO Ryan Fukushima sold 14.3K shares for $1.0M on Aug 21
- Diagnostics CEO Thomas Schoenherr sold 2.7K shares for $189K on Aug 21
- Director Nadja West sold 3.0K shares for $207K on Aug 28
- Total cluster value of $2.0M represents ~0.018% of $11.2B market cap
- All four trades were open-market sales (code S)
- No insider purchases were reported in the cluster
Financial Impact
$2.0M in insider sales, or ~0.018% of market cap
Risk Factors
- CEO selling may indicate private concerns about near-term valuation or growth trajectory
- Cluster sales by multiple C-suite executives could precede a negative catalyst (e.g., guidance cut, clinical trial miss)
- No insider buying to offset the selling pattern
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-TEM-1788332996287 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 3, 2026 28d ago | Insider Cluster | $64.62 $62.21 | ▼ −3.73% | ▼ −2.52% | $76.41 (+18.25%) |
Sep 3, 2026 28d ago | Insider Cluster | $64.62 $62.21 | ▼ −3.73% | ▼ −2.52% | $76.41 (+18.25%) |
Sep 1, 2026 4w ago | Insider Cluster | $62.27 $61.28 | ▼ −1.59% | ▼ −1.67% | $76.41 (+22.71%) |
Aug 28, 2026 5w ago | Insider Cluster | $64.04 $64.62 | ▼ −0.91% | ▼ −0.80% | $76.41 (−19.32%) |
Aug 25, 2026 5w ago | 144 | $68.48 $61.94 | ▲ +9.55% | ▲ +9.43% | $76.41 (−11.58%) |
Aug 25, 2026 5w ago | Insider Cluster | $68.73 $62.27 | ▼ −9.40% | ▼ −8.86% | $76.41 (+11.17%) |
Aug 21, 2026 6w ago | Insider Cluster | $72.69 $64.04 | ▲ +11.90% | ▲ +12.37% | $76.41 (−5.12%) |
Aug 19, 2026 6w ago | 144 | $66.65 $70.69 | ▲ +6.06% | ▲ +4.95% | $76.41 (+14.64%) |
Aug 18, 2026 6w ago | Insider Cluster | $49.36 $68.73 | ▼ −39.24% | ▼ −39.44% | $76.41 (−54.80%) |
Aug 11, 2026 7w ago | Insider Cluster | $55.69 $49.36 | ▼ −11.37% | ▼ −10.96% | $76.41 (+37.21%) |
US Market Status
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