LYTIR

Insider · SEC Form 4 · EVP and CIO

Schafer Douglas M. JR

In the 12 months to Nov 8, 2026, on the open market: sold $9.4M of MIAX. Filed a median of 2 business days 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: $9.4M in total.Jul: Insider sales $2.0MAug: Insider sales $2.2MSep: Insider sales $1.9MOct: Insider sales $1.6MNov: Insider sales $1.6MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $9.4M
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. Nov 4, 2026 8,000 shares filed Nov 5, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $280K
  2. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Nov 3, 2026 40,000 shares filed Nov 5, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $1.4M
  3. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Oct 22, 2026 8,000 shares filed Oct 26, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $280K
  4. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Oct 2, 2026 40,000 shares filed Oct 6, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $1.3M
  5. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Sep 2, 2026 48,000 shares filed Sep 4, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $1.9M
  6. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Aug 4, 2026 48,000 shares filed Aug 6, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $2.2M
  7. MIAXSold: MIAMI INTERNATIONAL HOLDINGS, INC. Jul 2, 2026 48,000 shares filed Jul 7, 2026 387,414 shares held directly after, as filed 10b5-1 plan filing $2.0M

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 2 to Nov 4, 2026
  • MIAX: grant or award (code A), 1 entry, Jun 16, 2026
Code A
A grant or award from the company, such as stock given as pay.
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.