Teekell Judson Gray sold $128K of MIAX
Teekell Judson Gray sold 3,000 shares of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) at $42.78 ($0.13M total) on 2026-06-02 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The disclosure provides a datapoint on insider activity but, because it is under a pre-arranged 10b5-1 plan, it is typically lower-signal than unscheduled selling.
Market read
Traders may monitor for patterns of insider selling, but this single 10b5-1 sale is unlikely to drive a fundamental repricing by itself.
What to watch
The filing does not indicate why the director sold (tax, diversification, planned liquidity), and the net holdings after sale remain substantial (71,014 shares).
Background
This is an SEC Form 4 insider transaction disclosure for Miami International Holdings, Inc. (MIAX).
Ticker impact
Director Teekell Judson Gray sold 3,000 MIAX shares in an open-market transaction under a pre-arranged 10b5-1 plan.
Low near-term impact; any reaction is more sentiment/flow-driven than fundamental.
The filing is a routine insider transaction and explicitly tied to a pre-arranged 10b5-1 plan, reducing interpretive weight versus discretionary selling.
Market effects
Minimal; this is company-specific insider disclosure with no stated sector-wide catalyst.
None indicated.
None indicated.
Counterpoint
If the market treats 10b5-1 sales as purely mechanical, the trade may be ignored; any price dip could be overdone relative to the signal strength.
Key entities
- issuerMIAX
Miami International Holdings, Inc.; subject of the Form 4 insider sale.
- insiderTeekell Judson Gray
Director who sold 3,000 shares on June 2 under a 10b5-1 plan; filed June 4.
