The selling pattern is consistent with pre-planned option exercises and routine portfolio rebalancing. No bearish signal is warranted given the small proportional size and lack of concentrated selling by non-C-suite insiders. Monitor for any subsequent 8-K filings that could indicate a material event, but this cluster alone does not warrant a trading response.
Price Chart
Executive Summary
Insider selling cluster at Magnite (MGNI) totaling ~$5.3M over a 7-day window, led by CEO Michael Barrett's option-exercise-and-sell transactions ($4.71M). Two directors and the CTO also sold small amounts. Total sales represent ~0.2% of market cap, consistent with routine diversification and tax planning rather than a bearish signal.
Key Financial Metrics
Key Facts
- CEO Michael Barrett sold 278,596 shares in open-market transactions on June 15-16, 2026, totaling ~$4.71M, all following option exercises at $5.80/share.
- Two directors (Knopper and Pearson) each sold ~10,800 shares for ~$169K and $168K respectively on June 10.
- CTO David Buonasera sold ~13,700 shares across three transactions totaling ~$247K.
- Total insider open-market sales of ~$5.3M represent approximately 0.2% of MGNI's $2.7B market cap.
- No insider purchases were reported in the cluster window.
Financial Impact
Insider sales of ~$5.3M, or 0.2% of market cap — immaterial relative to company size.
Risk Factors
- CEO selling a large absolute dollar amount could be misinterpreted by the market as a negative signal.
- Further insider selling in coming weeks could indicate a change in sentiment.
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-1781736426719 |
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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