The breadth of insider selling (CEO, CFO, CTO, CAO, directors) is a cautionary signal. While the dollar amount is modest relative to market cap, the concentration of C-suite sales is unusual. Monitor for any upcoming negative news or guidance changes. The stock's strong performance may be providing a selling opportunity for insiders. Consider reducing positions or hedging until the next earnings release.
Price Chart
Executive Summary
A significant insider selling cluster at Magnite, with 8 insiders including the CEO, CFO, and CTO selling a total of ~$9.9M in shares over a week. The CEO alone sold $6.68M worth. While insider sales are often liquidity-driven, the breadth and dollar amount (0.28% of market cap) are notable, especially given the stock's recent strength. The historical calibration shows cluster sells are not amplified, but the sheer size and C-suite participation warrant attention. The 75% win rate on prior MGNI reports suggests the market has been responsive to signals, but this cluster is a bearish data point against a backdrop of strong institutional ownership and bullish analyst consensus.
Key Financial Metrics
Key Facts
- 8 insiders sold shares totaling ~$9.9M in a 7-day window.
- CEO Michael Barrett sold 294,000 shares worth $6.68M, the largest trade.
- CFO David Day made a non-cash gift of 26,258 shares.
- Total open-market sales of ~$9.9M represent ~0.28% of the $3.5B market cap.
- The cluster includes the CEO, CFO, CTO, Chief Accounting Officer, and multiple directors.
Financial Impact
Total insider sales of ~$9.9M, or ~0.28% of market cap. CEO sale alone was $6.68M.
Risk Factors
- Insider sales may signal management's view that the stock is fully valued or that headwinds are ahead.
- CEO selling a large portion of his stake could be misinterpreted by the market, leading to a sell-off.
- The cluster could be driven by pre-planned 10b5-1 plans, but the concentration of sales across multiple top executives is still notable.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MGNI-1786774925032 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 11, 2026 22d ago | Insider Cluster | $23.77 $23.84 | ▲ +0.29% | ▲ +0.74% | $25.44 (+7.03%) |
Sep 10, 2026 22d ago | Press Release | $23.55 $23.77 | ▲ +0.93% | ▲ +0.08% | $25.44 (+8.03%) |
Sep 10, 2026 23d ago | Insider Cluster | $23.55 $23.77 | ▲ +0.93% | ▲ +0.08% | $25.44 (+8.03%) |
Sep 3, 2026 4w ago | Insider Cluster | $24.63 $24.14 | ▼ −1.99% | ▼ −1.60% | $25.44 (+3.29%) |
Aug 12, 2026 7w ago | Insider Cluster | $24.34 $24.58 | ▲ +0.99% | ▲ +0.29% | $25.44 (+4.52%) |
Aug 12, 2026 7w ago | Insider Cluster | $24.34 $24.58 | ▼ −0.99% | ▼ −0.29% | $25.44 (−4.52%) |
Aug 12, 2026 7w ago | Insider Cluster | $24.34 $24.58 | ▼ −0.99% | ▼ −0.29% | $25.44 (−4.52%) |
Aug 10, 2026 7w ago | 144 | $24.30 $24.34 | ▲ +0.16% | ▼ −0.09% | $25.44 (+4.69%) |
Aug 7, 2026 8w ago | Insider Cluster | $24.21 $24.30 | ▼ −0.37% | ▼ −0.69% | $25.44 (−5.08%) |
Aug 7, 2026 8w ago | Insider Cluster | $24.21 $24.30 | ▲ +0.37% | ▲ +0.69% | $25.44 (+5.08%) |
US Market Status
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