Schwarzkopf Cynthia sold $214K of MIAX
Schwarzkopf Cynthia sold 5,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $42.85 ($0.21M total) on 2026-08-17 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The disclosed sale is routine and unlikely to affect MIAX's valuation materially.
Market read
Minor insider sale with limited trading relevance.
What to watch
The sale is pre‑arranged under a 10b5‑1 plan, reducing the likelihood of insider sentiment driving price.
Background
Form 4 filings disclose insider transactions; investors monitor them for potential signals.
Ticker impact
Director Cynthia Schwarzkopf sold 5,000 shares for $214,250 via a 10b5‑1 plan, reducing her holdings to 88,545 shares.
minor downward pressure, likely within normal volatility range
Sale size is small relative to float and disclosed under a pre‑arranged plan, limiting informational advantage.
Market effects
No material impact on the broader financial services sector.
Limited to U.S. markets; no regional ripple effect.
Not globally significant.
Counterpoint
If the director's sale signals concerns, a short‑term dip could be amplified.
Key entities
- DirectorCynthia Schwarzkopf
Director of Miami International Holdings who sold shares.



