The insider sales are too small to convey a material signal. Monitor for any larger insider transactions or upcoming earnings/guidance events that could provide context, but no immediate trading action is warranted.
Price Chart
Executive Summary
Two Magnite insiders (a Director and the CTO) sold a combined $568K in open-market transactions over a one-week period. The total represents only ~0.016% of the company's $3.6B market cap, making the cluster economically trivial and likely driven by routine portfolio rebalancing or tax planning rather than a bearish signal.
Key Financial Metrics
Key Facts
- Director Sarah Patricia Harden sold 18,400 shares at $24.00 for $442K on 2026-08-28.
- CTO David Buonasera sold 5,371 shares at $23.42 for $126K on 2026-09-01 (plus 1,043 shares at $25 on 2026-09-02 from prior cluster data).
- Total cluster value $568K is only 0.016% of MGNI's $3.6B market cap.
- No 10b5-1 plan pattern or blackout-window clustering is evident; the sales are small and isolated.
Financial Impact
Trivial — $568K in insider sales vs. $3.6B market cap (0.016%)
Risk Factors
- Insider selling could accelerate if fundamentals deteriorate, but current volume is negligible.
- No other risk factors identified from this filing alone.
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-1788506287511 |
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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