The insider selling is routine and liquidity-driven, not a bearish signal. Monitor for any upcoming 8-K filings or earnings releases that could provide context for the selling, but no immediate action is warranted.
Price Chart
Executive Summary
A cluster of insider selling at MIAX totaling $4.17M over a 7-day window, led by Chairman & CEO Thomas P. Gallagher ($1.99M) and EVP & CIO Douglas M. Schafer Jr. ($1.94M). The selling follows a wave of derivative exercises at low strike prices ($12-$22.40), suggesting a cashless exercise-and-sell pattern. While the $4.17M represents only ~0.1% of MIAX's $4.2B market cap (trivial by proportionality), the involvement of the CEO and CIO in open-market sales warrants attention. However, the selling is likely liquidity-driven post-vesting, not a bearish signal, given the modest dollar amount relative to market cap and the absence of any negative corporate filings in the cross-filing context. Sentiment is neutral with a low impact score, reflecting the routine nature of the cluster.
Key Financial Metrics
Key Facts
- Chairman & CEO Thomas P. Gallagher sold 47,000 shares at $42.43 for $1.99M on 2026-09-03
- EVP & CIO Douglas M. Schafer Jr. sold 48,000 shares at $40.48 for $1.94M on 2026-09-02
- EVP, GC & Corporate Secretary Barbara J. Comly sold 44,445 shares at $40.49 for $1.80M on 2026-09-02
- Director Judson Gray Teekell sold 8,545 shares total at $40.89-$41.58 for $353K on 2026-09-02
- Total cluster value of $4.17M represents ~0.1% of MIAX's $4.2B market cap
- All open-market sales were preceded by derivative exercises at strike prices of $12-$22.40, indicating a cashless exercise-and-sell pattern
Financial Impact
$4.17M in insider selling, representing ~0.1% of MIAX's $4.2B market cap
Risk Factors
- Insider selling could accelerate if the stock continues to rise, but current levels are not alarming
- No negative corporate events in the cross-filing context to suggest informed selling
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MIAX-1788588295376 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 27, 2026 today | SC 13G/A | $33.03 | awaiting T+1 | — | $32.53 (−1.51%) |
Oct 26, 2026 1d ago | Insider Cluster | $33.16 | awaiting T+1 | — | $32.53 (−1.90%) |
Oct 1, 2026 26d ago | Press Release | $33.75 $33.01 | ▼ −2.19% | ▼ −2.93% | $32.53 (−3.61%) |
Sep 4, 2026 7w ago | Insider Cluster | $43.46 $42.89 | ▼ −1.31% | ▼ −0.85% | $32.53 (−25.15%) |
Sep 4, 2026 7w ago | Insider Cluster | $43.46 $42.89 | ▼ −1.31% | ▼ −0.85% | $32.53 (−25.15%) |
Aug 19, 2026 9w ago | Insider Cluster | $41.32 $42.59 | ▲ +3.07% | ▲ +2.66% | $32.53 (−21.27%) |
Aug 19, 2026 9w ago | Insider Cluster | $41.32 $42.59 | ▼ −3.07% | ▼ −2.66% | $32.53 (+21.27%) |
Aug 6, 2026 11w ago | Insider Cluster | $44.23 $43.59 | ▲ +1.45% | ▲ +1.42% | $32.53 (+26.45%) |
Jul 16, 2026 14w ago | Insider Cluster | $42.33 $42.04 | ▼ −0.69% | ▼ −0.52% | $32.53 (−23.15%) |
Jul 14, 2026 15w ago | Insider Cluster | $42.43 $42.89 | ▲ +1.08% | ▲ +1.63% | $32.53 (−23.33%) |
US Market Status
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