LYTIR

Insider · SEC Form 4 · Chairman & CEO

Gallagher Thomas P.

In the 12 months to Nov 8, 2026, on the open market: sold $16.3M of MIAX. Filed a median of 1 business day after the trade.

Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $16.3M in total.Jul: Insider sales $5.9MAug: Insider sales $8.4MSep: Insider sales $2.0MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $16.3M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.
  1. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Sep 3, 2026 47,000 shares filed Sep 4, 2026 1,423,275 shares held indirectly after, as filed 10b5-1 plan filing $2.0M
  2. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Aug 19, 2026 149,700 shares filed Aug 20, 2026 1,423,275 shares held indirectly after, as filed 10b5-1 plan filing $6.2M
  3. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Aug 4, 2026 48,334 shares filed Aug 6, 2026 1,723,275 shares held indirectly after, as filed 10b5-1 plan filing $2.2M
  4. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Jul 13, 2026 70,000 shares filed Jul 14, 2026 1,723,275 shares held indirectly after, as filed 10b5-1 plan filing $3.0M
  5. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Jul 7, 2026 28,228 shares filed Jul 7, 2026 1,723,275 shares held indirectly after, as filed 10b5-1 plan filing $1.2M
  6. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Jul 6, 2026 41,772 shares filed Jul 7, 2026 1,723,275 shares held indirectly after, as filed 10b5-1 plan filing $1.8M

Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.

Other Form 4 entries

Not counted above: entries this filer reported on Form 4 in the same 12 months that are not open-market purchases or sales. Each entry is one line of a filing.

  • MIAX: option exercise or conversion (code M), 9 entries, Jul 6 to Sep 3, 2026
  • MIAX: grant or award (code A), 1 entry, Jun 16, 2026
  • MIAX: shares withheld for tax or exercise price (code F), 1 entry, Aug 18, 2026
Code A
A grant or award from the company, such as stock given as pay.
Code F
Shares paid to, or withheld by, the company to cover an exercise price or the tax due on an award.
Code M
An exercise or conversion of a derivative security received from the company, such as stock options.

Source: the same SEC Form 4 filings. The codes are the SEC's own transaction codes; the meanings above are a plain-words reading of the SEC's Form 4 instructions.