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Person · CIK 2080596

Cynthia Schwarzkopf

Director at Miami International Holdings

Source: Forms 3, 4, 5 and 144 on SEC EDGAR

Sold on Form 4$1.2M
Noticed on Form 144$1.4M
Bought on Form 4$0
Companies1

Holdings now

As reported after the latest Form 3, 4 or 5 at each company.

How these figures work

Options and RSUs are from the latest filing that lists them; earlier grants may also be held. Holdings can be out of date when a person stops filing.

CompanySecurityHeldShares or unitsAs of
Miami International Holdings MIAXCommon StockDirectly88,545Aug 17, 2026 · Filing · EDGAR
Miami International Holdings MIAXStock Option (Right to Buy)
exercise $12.00, expires May 31, 2027, into Common Stock
Directly11,916Aug 17, 2026 · Filing · EDGAR

Sold and noticed by quarter

Cynthia Schwarzkopf: dollars sold on Form 4 and noticed on Form 144 per quarter, Q1 2025 to Q4 2026$814K$0Q1 2025: $0 noticed on Form 144Q1 2025: $0 sold on Form 4Q2 2025: $0 noticed on Form 144Q2 2025: $0 sold on Form 4Q3 2025: $0 noticed on Form 144Q3 2025: $0 sold on Form 4Q4 2025: $0 noticed on Form 144Q4 2025: $0 sold on Form 4Q1 2026: $0 noticed on Form 144Q1 2026: $0 sold on Form 4Q2 2026: $795K noticed on Form 144Q2 2026: $814K sold on Form 4Q3 2026: $620K noticed on Form 144Q3 2026: $424K sold on Form 4Q4 2026: $0 noticed on Form 144Q4 2026: $0 sold on Form 4Q1 2025Q3 2025Q1 2026Q3 2026

Sold (Form 4) Noticed (Form 144) Bought (Form 4)

Quarterly totals as a table
QuarterSold (Form 4)Noticed (Form 144)
Q3 2026$424K$620K
Q2 2026$814K$795K

Planned sales (Form 144) and the sales that followed

Each Form 144 notice of a planned sale, grouped by broker and 10b5-1 plan, with the Form 4 sales we matched to it.

How we match

A Form 144 is a notice of a planned sale by an affiliate. SEC Tracker matches each notice to Form 4 sales by the same person at the same company within 90 days of the notice, up to the shares noticed. The match is our inference, not something either filing states.

Notice dateNoticedPlanned saleOutcomeLinks
Miami International Holdings MIAX · Morgan Stanley Smith Barney · 10b5-1 plan adopted Mar 12, 2026 · 2 notices
Jul 15, 202615,000 · ~$620KJul 15, 2026Partly sold Sold 10,000 in 2 sales, Jul 15 to Aug 17 · $424K likely match Form 4 (1) · Form 4 (2)Filing · EDGAR
Jun 11, 202619,500 · ~$795KJun 11, 2026Sold as noticed Sold 19,500 at $41.73 on Jun 11 · $814K Form 4Filing · EDGAR

Every transaction, by company

Each Form 3, 4 and 5 transaction in plain words, newest first.

How these figures work

Values are shares times the price each filing states; grants, exercises and gifts usually state no price. Held after is what the filing reports was held once the transaction was done, directly or through the named holder.

Miami International Holdings MIAX Director · filings 2025 to 2026 · sold $1.2M · $1.4M noticed on Form 144

DateTransactionSharesPriceValueHeld afterSource
Aug 17, 2026Option or RSU exercised or converted+5,000$12.00$60K93,545 directFiling · EDGAR
Aug 17, 2026Sale under a 10b5-1 plan−5,000$42.85$214K88,545 directFiling · EDGAR
Aug 17, 2026Option or RSU exercised or converted
Stock Option (Right to Buy)
−5,00011,916 directFiling · EDGAR
Jul 15, 2026Option or RSU exercised or converted+5,000$12.00$60K93,545 directFiling · EDGAR
Jul 15, 2026Sale under a 10b5-1 plan−5,000$42.00$210K88,545 directFiling · EDGAR
Jul 15, 2026Option or RSU exercised or converted
Stock Option (Right to Buy)
−5,00016,916 directFiling · EDGAR
Jun 16, 2026Grant or award from the company+4,97088,545 directFiling · EDGAR
Jun 16, 2026Grant or award from the company
Nonqualified Stock Option (Right to Buy)
+5,1425,142 directFiling · EDGAR
Jun 15, 2026Grant or award from the company+2,26783,575 directFiling · EDGAR
Jun 11, 2026Option or RSU exercised or converted+19,500$12.00$234K100,808 directFiling · EDGAR
Jun 11, 2026Sale under a 10b5-1 plan−19,500$41.73$814K81,308 directFiling · EDGAR
Jun 11, 2026Option or RSU exercised or converted
Stock Option (Right to Buy)
−19,5000 directFiling · EDGAR
Aug 15, 2025Derivative converted+36,25081,308 directFiling · EDGAR
Aug 15, 2025Derivative converted+45,05881,308 directFiling · EDGAR
Aug 15, 2025Derivative converted
Series B Preferred Stock
−36,2500 directFiling · EDGAR
Aug 15, 2025Derivative converted
Nonvoting Common Stock
−45,0580 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−19,5000 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+19,50019,500 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−21,9160 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+21,91621,916 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−21,2500 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+21,25021,250 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−22,7080 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+22,70822,708 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−28,4370 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+28,43728,437 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
−32,5010 directFiling · EDGAR
Aug 15, 2025Option or RSU exercised or converted
Stock Option (Right to Buy)
+32,50132,501 directFiling · EDGAR
All 8 Forms 3, 4, 5 and 144
FiledFormCompanyLinks
Aug 19, 2026Form 4Miami International Holdings MIAXFiling · EDGAR
Jul 16, 2026Form 4Miami International Holdings MIAXFiling · EDGAR
Jul 15, 2026Form 144Miami International Holdings MIAXFiling · EDGAR
Jun 17, 2026Form 4Miami International Holdings MIAXFiling · EDGAR
Jun 12, 2026Form 4Miami International Holdings MIAXFiling · EDGAR
Jun 11, 2026Form 144Miami International Holdings MIAXFiling · EDGAR
Aug 19, 2025Form 4Miami International Holdings MIAXFiling · EDGAR
Aug 13, 2025Form 3Miami International Holdings MIAXFiling · EDGAR

Every figure is as filed with the SEC on Forms 3, 4, 5 and 144. Holdings are the amounts reported after each person's latest filing at each company and can be out of date. Matching a Form 144 notice to Form 4 sales is SEC Tracker's inference from owner, company, dates and share counts, not something the filings state. Not investment advice. Not affiliated with the U.S. SEC.

Data on this page was fetched . The filing on SEC.gov is the record.