Miami International Holdings, INC Form 4 insider transactions

Raymond Mark F. acquired shares and stock options in Miami International Holdings, Inc. (MIAX) on June 15-16, 2026.

Director Paul Stahlin reported transactions involving the acquisition of 2,267 and 4,970 shares of common stock in MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).

Director John Beckelman reported transactions involving the acquisition of 2,267 and 4,970 shares of common stock in Miami International Holdings, Inc. (MIAX).

Judson Gray Teekell, a Director at MIAMI INTERNATIONAL HOLDINGS, INC., reported the acquisition of 2,267 common stock units and an additional 4,970 units.

Director Kurt Eckert of Miami International Holdings, Inc. reported transactions involving the acquisition of common stock and stock options.

Shelly Brown, EVP, Chief Strategy Officer of Miami International Holdings, Inc. (MIAX), reported a sale of 4,714 common shares on June 15, 2026, executed under a pre-established Rule 10b5-1 trading plan.

Eric Sites, a Director at Miami International Holdings, Inc. (MIAX), reported transactions involving the acquisition of common stock and vested stock options.

EVP and Chief Strategy Officer Shelly Brown surrendered 3,619 shares of Miami International Holdings to satisfy tax withholding requirements.

Edward Deitzel, EVP at Miami International Holdings, surrendered 5,939 shares to satisfy tax obligations related to restricted stock.

Cynthia Schwarzkopf, a Director and 10% Owner of Miami International Holdings, Inc., exercised stock options and sold an equal number of common shares on June 11, 2026, under a pre-arranged 10b5-1 plan.

Director Paul Stahlin exercised 11,000 stock options in Miami International Holdings, Inc., increasing his direct beneficial ownership.

EVP and CISO Harish Jayabalan exercised options and sold 20,000 shares of Miami International Holdings common stock.

Director Judson Teekell of Miami International Holdings, Inc. sold 3,000 shares of common stock via a Rule 10b5-1 trading plan.

Director Kurt M. Eckert exercised 5,250 stock options and subsequently sold the shares under a Rule 10b5-1 trading plan.

EVP and General Counsel Barbara Comly exercised 28,000 stock options and sold the resulting shares under a 10b5-1 trading plan.

Edward Deitzel, EVP at Miami International Holdings, exercised 11,000 stock options and sold the resulting shares.

Douglas M. Schafer Jr., EVP and CIO of Miami International Holdings, exercised options and sold 48,000 shares of common stock.

EVP and Chief Strategy Officer Shelly Brown exercised 16,000 stock options and sold the resulting shares under a 10b5-1 plan.

Miami International Holdings CEO Thomas Gallagher exercised 70,000 stock options and sold the resulting shares via a 10b5-1 plan.

Horizon Kinetics Asset Management LLC reported a reduction in its beneficial ownership of Miami International Holdings, Inc. common stock following an in-kind distribution.

Judson Gray Teekell, a Director at Miami International Holdings, Inc., acquired 22,667 shares of common stock through the exercise of stock options.

Miami International Holdings, Inc. EVP and CFO Lance Emmons sold 35,000 shares of common stock for an average price of $56.36 per share, executed under a pre-arranged Rule 10b5-1 trading plan.

Thomas P. Gallagher, Chairman & CEO of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), reported the acquisition of 24,999 shares of common stock on May 11, 2026, through the exercise of an incentive stock option.

Thomas P. Gallagher, Chairman & CEO of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), reported the sale of 15,771 shares of common stock under a pre-arranged Rule 10b5-1 trading plan.

Thomas P. Gallagher, Chairman & CEO of Miami International Holdings, Inc. (MIAX), executed a Rule 10b5-1 plan, acquiring 54,229 shares at $12 and disposing of an equal number at $47.26.

MIAX Exchanges EVP, CRO, CCO Edward Deitzel sold 11,000 shares of common stock for $12 per share, and exercised options to acquire 11,000 shares at $12, subsequently selling them at a weighted average of $47.28.

Shelly Brown, EVP, Chief Strategy Officer of Miami International Holdings, Inc. (MIAX), reported the sale of 16,000 shares of common stock for $47.28 per share, executed under a Rule 10b5-1 trading plan.

Judson Gray Teekell, a Director at Miami International Holdings, Inc. (MIAX), reported the sale of 3,000 common shares under a pre-established Rule 10b5-1 trading plan.

Douglas M. Schafer Jr., EVP and CIO of Miami International Holdings, Inc., executed a Rule 10b5-1 plan transaction, selling 48,000 shares of common stock.

MIAX International Holdings, Inc. Director Kurt M. Eckert reported a sale of 5,625 shares of common stock, executed under a pre-arranged 10b5-1 trading plan.