Cynthia Schwarzkopf

CIK: 0002080596

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (13.6%)

Position reduction

Option Exercises (M)15 (68.2%)

Derivative conversions

Awards (A)2 (9.1%)

Compensation grants

Other (G, F, J, C, D, …)2 (9.1%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

MIAX

MIAMI INTERNATIONAL HOLDINGS, INC.

Director

Discretionary Trading P&L

Holdings

Transaction History (22 total)

MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 17, 2026
Exercise(M)
Direct
5K shares at avg. $12.00$60K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 17, 2026
Sale(S)
Direct
5K shares at avg. $42.85$214K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jul 15, 2026
Sale(S)
Direct
5K shares at avg. $42.00$210K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jul 15, 2026
Exercise(M)
Direct
5K shares at avg. $12.00$60K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 16, 2026
Award(A)
Direct
5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 15, 2026
Award(A)
Direct
2.3K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 11, 2026
Exercise(M)
Direct
19.5K shares at avg. $12.00$234K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Jun 11, 2026
Sale(S)
Direct
19.5K shares at avg. $41.73$814K
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
22.7K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
22.7K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
28.4K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
28.4K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
32.5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Conversion(C)
Direct
36.3K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
32.5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Conversion(C)
Direct
45.1K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
19.5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
19.5K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
21.9K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
21.9K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
21.3K shares-
MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Aug 15, 2025
Exercise(M)
Stock Option (Right to Buy)
Direct
21.3K shares-

		Type	Shares	Price		Ownership
Aug 17, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M)	5,000	$12.00	$60,000	Direct
Aug 17, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Sale(S)	5,000	$42.85	$214,250	Direct
Jul 15, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Sale(S)	5,000	$42.00	$210,000	Direct
Jul 15, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M)	5,000	$12.00	$60,000	Direct
Jun 16, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Award(A)	4,970	-	$0	Direct
Jun 15, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Award(A)	2,267	-	$0	Direct
Jun 11, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M)	19,500	$12.00	$234,000	Direct
Jun 11, 2026	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Sale(S)	19,500	$41.73	$813,735	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	22,708	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	22,708	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	28,437	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	28,437	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	32,501	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Conversion(C)	36,250	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	32,501	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Conversion(C)	45,058	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	19,500	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	19,500	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	21,916	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	21,916	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	21,250	-	-	Direct
Aug 15, 2025	MIAX MIAMI INTERNATIONAL HOLDINGS, INC.	Exercise(M) Stock Option (Right to Buy)	21,250	-	-	Direct

1-22 of 22 transactions

About Schwarzkopf Cynthia

Schwarzkopf Cynthia (SEC CIK 0002080596) files insider reports with the SEC as Director of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).

Signal8 holds 6 ownership filings by Schwarzkopf Cynthia (1 Form 3, 5 Form 4), filed between Aug 13, 2025 and Aug 19, 2026. Those filings report 22 transactions, from Aug 15, 2025 to Aug 17, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Schwarzkopf Cynthia's filings is in PRINCETON, NJ.

Recent filings by Schwarzkopf Cynthia

Aug 17, 2026: Option exercise of MIAX shares (Form 4, code M).
Aug 17, 2026: Open-market sale of MIAX shares (Form 4, code S).
Jul 15, 2026: Open-market sale of MIAX shares (Form 4, code S).
Jul 15, 2026: Option exercise of MIAX shares (Form 4, code M).
Jun 16, 2026: Grant or award of MIAX shares (Form 4, code A).

Other insiders filing for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

Comly Barbara J., EVP, GC & Corporate Secretary
Schafer Douglas M. JR, EVP and CIO
Jayabalan Harish, EVP, CISO and CRO
Brown Shelly, EVP, Chief Strategy Officer
Gallagher Thomas P., Chairman & CEO
Deitzel Edward, EVP, CRO, CCO MIAX Exchanges

How to read Form 4 transaction codes