Monitor for the actual sale via subsequent Form 4 filing. The consistent selling by the CEO, even if for tax or diversification purposes, may weigh on sentiment. Watch for any acceleration of selling or additional insider filings that could signal deeper concerns.
Price Chart
Executive Summary
CEO and Director Michael G. Barrett filed a Form 144 notice to sell 293,968 shares of Magnite common stock, valued at approximately $6.68 million, from a same-day stock option exercise. This continues a pattern of significant insider selling, with Barrett having sold over 686,000 shares in the past three months, signaling potential lack of confidence or routine portfolio diversification.
Key Facts
- Form 144 filed by Officer/Director Michael G. Barrett on 08/06/2026 proposing sale of 293,968 shares.
- Estimated market value of proposed sale: $6,678,952.96.
- Shares are from a stock option exercise executed on the same date.
- Barrett has sold a total of 686,160 shares in the last three months (including this filing).
- Prior sales: 38,596 shares on 07/15/2026, 75,000 on 06/29/2026, 100,000 on 06/16/2026, and 178,596 on 06/15/2026.
Financial Impact
Proposed sale of $6.68M represents ~0.22% of MGNI's $3.0B market cap; cumulative three-month selling by Barrett totals approximately $13.6M.
Risk Factors
- Continued insider selling could erode investor confidence and pressure the stock.
- The pattern of sales may indicate the CEO is reducing exposure ahead of potential headwinds.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (Primary) | 0001950047-26-007720 |
| Document: 0001950047-26-007720-index.html | 0001950047-26-007720 |
| Document: 0001950047-26-007720.txt | 0001950047-26-007720 |
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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