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Possible new MIAX shares

MIAXDilution

Known so far: no new shares from the prospectus covers read · no effective shelf · not yet read: ATM.

Shelf room

  • Room today none, no effective shelf
How this is worked out

Shelf room: none. No shelf registration on EDGAR was declared effective in the last 3 years, so a sale needs a new registration or a private placement.

What could become new Miami International Holdings (MIAX) shares: warrants, convertible notes and options and RSUs, each with the 10-Q, 10-K, S-1 or 424B filing it comes from.

MIAX dilution ladder

Every source of new shares on record, from the filings that created it.

100.1M outstanding; up to 120.9M fully diluted, +21%

  1. Outstandingas of Oct 26, 2026 (10-Q filed Nov 2) · share count on the cover page
    100.1M
  2. Warrants3.2M10-Q Nov 2, 2026 · equity note
    +3.2M
  3. Convertible notes0 shares10-Q Nov 2, 2026 · securities left out of diluted EPS
    +0
  4. Options and RSUs16.8M options, 824K RSUs10-Q Nov 2, 2026 · equity note
    +17.6M

Not stated in the filings we read: an ATM program.

Counts, sizes and prices as stated in each filing; the fully diluted count is arithmetic on them. Dollars become shares only at a price a filing states. Not advice.

Financing terms to know

None found in filings since Nov 2, 2026.

Each term is quoted from the exhibit it comes from; numbers are as stated in the filing. A flag describes a financing term. It is not investment advice.

Shares outstanding

100M

Oct 2025 to Oct 2026: from 81.4M to 100M.

From the share count on the cover of each 10-Q and 10-K, dated as each cover states.