Eckert Kurt M. 4

4 · MIAMI INTERNATIONAL HOLDINGS, INC. · Filed Jun 17, 2026

AI-generated summary of this filing

Updated Jun 17, 2026

MIAX Director Kurt M. Eckert Receives RSU Awards

What Happened

Kurt M. Eckert, a director of Miami International Holdings, Inc. (MIAX), received awards totaling 14,950 shares reported as grants/awards (transaction code A). The filings show: 2,267 RSUs on 2026-06-15 (vested on grant), 4,970 RSUs on 2026-06-16 (scheduled to vest before the 2027 annual meeting), and 7,713 derivative awards on 2026-06-16 with a time-based vesting schedule. All awards are reported at $0.00 purchase price because these are compensation awards (RSUs/options), not open-market purchases.

Key Details

Transaction dates/prices:
- 2026-06-15: 2,267 RSUs @ $0.00 — fully vested on grant (footnote F1).
- 2026-06-16: 4,970 RSUs @ $0.00 — vest on the last business day before the 2027 annual meeting, subject to continued service (F2).
- 2026-06-16: 7,713 derivative awards @ $0.00 — vest in three tranches: 3,856 on 2026-06-30, 1,929 on 2026-09-30, and 1,928 on 2026-12-31, subject to continued service (F3).
Shares owned after the transaction: not specified in the provided filing details.
Filing timeliness: Report filed 2026-06-17 covering transactions on 2026-06-15/16 (appears timely).
Footnotes: RSUs each represent a right to receive one share when vested; the derivative award has a specified vesting schedule.

Context

These were compensation awards (RSUs/derivative awards) rather than open-market buys or sales, so no cash outlay or proceeds occurred at grant. Vesting is contingent on continued service for most of the grants; vested RSUs typically convert to shares and may be subject to withholding or sale for taxes per company practice (not detailed here). Such awards are common executive/director compensation and are informational rather than a direct market signal of buying/selling intent.

Form 4

Period: 2026-06-15

Director

Transactions

Award
Common Stock
[F1]
2026-06-15+2,267→ 144,642 total
Award
Common Stock
[F2]
2026-06-16+4,970→ 149,612 total
Award
Nonqualified Stock Option (Right to Buy)
[F3]
2026-06-16+7,713→ 7,713 total
Exercise: $40.24Exp: 2036-06-15→ Common Stock (7,713 underlying)

Footnotes (3)

[F1]The amount represents restricted stock units ("RSUs") that fully vested on the date of grant. Each RSU represents a right to receive one share of the Issuer's common stock.
[F2]The amount represents RSUs that vest on the last business day immediately preceding the 2027 annual meeting of stockholders, subject to the reporting person's continued service to the Issuer through the vesting date.
[F3]3,856 of the shares subject to this option will vest on June 30, 2026, 1,929 of the shares subject to this option will vest on September 30, 2026 and the remaining 1,928 of the shares subject to this option will vest on December 31, 2026, subject to the Reporting Person's continued service to the Issuer or its subsidiaries through the applicable vesting date.

Signature

/s/Alessandra Maria Corona Henriques, Attorney-in-Fact|2026-06-17

1 file