Monitor MIAX for any upcoming earnings or material announcements in the next 2-4 weeks. The synchronized option exercise pattern at $12 with same-day sale at ~$42 is characteristic of a scheduled 10b5-1 plan or blackout-window expiring event rather than new negative information. The proportionality (0.2% of market cap) is below the significant threshold, but the C-suite-wide participation warrants attention. If the stock breaks below $40 without news, this cluster's signal strength increases.
Price Chart
Executive Summary
Seven MIAX insiders, including the Chairman & CEO and multiple EVPs, sold a total of $7.71M in open-market transactions on 2026-06-02, concurrent with derivative exercises. The sales represent ~0.2% of market cap and appear overwhelmingly driven by option exercise/tax planning — the entire C-suite exercised options at $12 and sold the resulting shares at ~$42, capturing ~$30/share spread. While the cluster size is notable, the pattern is best explained by a single vesting/expiration event, not coordinated bearish conviction.
Key Financial Metrics
Key Facts
- Seven insiders sold a total of $7.71M in shares on 2026-06-02, representing ~0.20% of MIAX's $3.8B market cap
- Chairman & CEO Thomas P. Gallagher sold 70,000 shares for ~$2.97M, exercising options at $12 each
- EVP & CIO Douglas M. Schafer sold 48,000 shares for ~$2.06M, also exercising options at $12
- EVP, GC & Corporate Secretary Barbara J. Comly sold 28,000 shares for ~$1.20M, exercising options at $0 and $12
- Director Kurt M. Eckert and Director Judson Gray sold smaller amounts, with Eckert also exercising options at $12
- No open-market buying was reported in this cluster — net direction is entirely selling
- All option exercises at $12 with sales at ~$42 suggest lockup/vesting expiration rather than opportunistic selling
Financial Impact
$7.71M total insider sales, ~0.2% of $3.8B market cap
Risk Factors
- Coordinated C-suite option exercises and same-day sales could presage adverse earnings or regulatory developments
- Zero insider buying creates an asymmetric information signal — management has no skin-in-the-game at current prices
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-1780606628749 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 today | Insider Cluster | — | awaiting T+1 | — | — |
Oct 1, 2026 25d ago | Press Release | $33.75 $33.01 | ▼ −2.19% | ▼ −2.93% | $33.16 (−1.75%) |
Sep 4, 2026 7w ago | Insider Cluster | $43.46 $42.89 | ▼ −1.31% | ▼ −0.85% | $33.16 (−23.70%) |
Sep 4, 2026 7w ago | Insider Cluster | $43.46 $42.89 | ▼ −1.31% | ▼ −0.85% | $33.16 (−23.70%) |
Aug 19, 2026 9w ago | Insider Cluster | $41.32 $42.59 | ▲ +3.07% | ▲ +2.66% | $33.16 (−19.75%) |
Aug 19, 2026 9w ago | Insider Cluster | $41.32 $42.59 | ▼ −3.07% | ▼ −2.66% | $33.16 (+19.75%) |
Aug 6, 2026 11w ago | Insider Cluster | $44.23 $43.59 | ▲ +1.45% | ▲ +1.42% | $33.16 (+25.03%) |
Jul 16, 2026 14w ago | Insider Cluster | $42.33 $42.04 | ▼ −0.69% | ▼ −0.52% | $33.16 (−21.66%) |
Jul 14, 2026 14w ago | Insider Cluster | $42.43 $42.89 | ▲ +1.08% | ▲ +1.63% | $33.16 (−21.85%) |
Jul 7, 2026 15w ago | Insider Cluster | $41.86 $42.99 | ▲ +2.70% | ▲ +1.85% | $33.16 (−20.78%) |
US Market Status
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