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United States Investment Banking & Investment Services

Miami International Holdings Inc (MIAX)

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Over the last 90 days, Miami International Holdings Inc. has seen 55 insider transactions, with a total sell value of $76.97 million. Notably, there were 20 net selling insiders. Recent transactions include significant proposed and planned sales by officers and directors, such as Cynthia Schwarzkopf and Harish Jayabalan, totaling several hundred thousand dollars each.
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Ticker: MIAX Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Brown Shelly
EVP, Chief Strategy Officer
1 sale — total 100,000 USD
Planned sale 15 Jun 2026
Value US$1,296,206.40 | Price 449.61 | Shares 49,244
Proposed sale 15 Jun 2026
Value US$3,053,981.28 | Price 489.96 | Shares 61,610
Planned sale 11 Jun 2026
Value US$100,000.00 | Price 41.73 | Shares 1,000
Planned sale 11 Jun 2026
Value US$100,000.00 | Price 41.73 | Shares 1,000
Planned sale 11 Jun 2026
Value US$100,000.00 | Price 41.73 | Shares 1,000
Proposed sale 11 Jun 2026
Value US$100,000.00 | Price 40.79 | Shares 1,000
Planned sale 9 Jun 2026
Value US$100,000.00 | Price 40.04 | Shares 1,000
Planned sale 9 Jun 2026
Value US$100,000.00 | Price 40.04 | Shares 1,000
Planned sale 8 Jun 2026
Value US$100,000.00 | Price 40.12 | Shares 1,000
Planned sale 8 Jun 2026
Value US$100,000.00 | Price 40.12 | Shares 1,000
Proposed sale 8 Jun 2026
Value US$100,000.00 | Price 39.21 | Shares 1,000
Planned sale 2 Jun 2026
Value US$128,340.00 | Price 42.78 | Shares 3,000
Planned sale 2 Jun 2026
Value US$128,340.00 | Price 42.78 | Shares 3,000
Planned sale 2 Jun 2026
Value US$224,490.00 | Price 42.76 | Shares 5,250
Planned sale 2 Jun 2026
Value US$224,490.00 | Price 42.76 | Shares 5,250
Planned sale 2 Jun 2026
Value US$673,920.00 | Price 42.12 | Shares 16,000
Planned sale 2 Jun 2026
Value US$2,965,200.00 | Price 42.36 | Shares 70,000
Planned sale 2 Jun 2026
Value US$1,199,800.00 | Price 42.85 | Shares 28,000
Planned sale 2 Jun 2026
Value US$2,056,320.00 | Price 42.84 | Shares 48,000
Planned sale 2 Jun 2026
Value US$463,760.00 | Price 42.16 | Shares 11,000
Planned sale 15 May 2026
Value US$1,972,600.00 | Price 56.36 | Shares 35,000
Proposed sale 15 May 2026
Value US$1,932,350.00 | Price 55.21 | Shares 35,000
Planned sale 5 May 2026
Value US$755,746.32 | Price 47.92 | Shares 15,771
Planned sale 4 May 2026
Value US$2,562,862.54 | Price 47.26 | Shares 54,229
Planned sale 4 May 2026
Value US$520,080.00 | Price 47.28 | Shares 11,000
Planned sale 4 May 2026
Value US$756,480.00 | Price 47.28 | Shares 16,000
Planned sale 4 May 2026
Value US$141,900.00 | Price 47.30 | Shares 3,000
Planned sale 4 May 2026
Value US$2,268,000.00 | Price 47.25 | Shares 48,000
Planned sale 4 May 2026
Value US$1,323,280.00 | Price 47.26 | Shares 28,000
Planned sale 4 May 2026
Value US$266,006.25 | Price 47.29 | Shares 5,625
Proposed sale 4 May 2026
Value US$1,556,610.00 | Price 47.17 | Shares 33,000
Proposed sale 4 May 2026
Value US$424,530.00 | Price 47.17 | Shares 9,000
Proposed sale 4 May 2026
Value US$1,509,440.00 | Price 47.17 | Shares 32,000
Planned sale 15 Apr 2026
Value US$2,179,632.00 | Price 43.68 | Shares 49,900
Planned sale 15 Apr 2026
Value US$4,514,816.64 | Price 43.36 | Shares 104,124
Planned sale 15 Apr 2026
Value US$3,035,243.36 | Price 43.36 | Shares 70,001
Planned sale 15 Apr 2026
Value US$1,294,667.88 | Price 43.64 | Shares 29,667
Proposed sale 15 Apr 2026
Value US$6,078,930.97 | Price 42.91 | Shares 141,667
Proposed sale 15 Apr 2026
Value US$19,486,503.75 | Price 42.91 | Shares 454,125
Proposed sale 15 Apr 2026
Value US$2,141,209.00 | Price 42.91 | Shares 49,900
Planned sale 8 Apr 2026
Value US$691,542.72 | Price 42.08 | Shares 16,434
Planned sale 8 Apr 2026
Value US$318,175.44 | Price 42.02 | Shares 7,572
Planned sale 7 Apr 2026
Value US$168,042.00 | Price 42.00 | Shares 4,001
Planned sale 7 Apr 2026
Value US$32,004.00 | Price 42.00 | Shares 762
Planned sale 7 Apr 2026
Value US$37,800.00 | Price 42.00 | Shares 900
Proposed sale 7 Apr 2026
Value US$513,506.05 | Price 41.63 | Shares 12,335
Proposed sale 7 Apr 2026
Value US$721,614.42 | Price 41.63 | Shares 17,334
Planned sale 6 Apr 2026
Value US$97,414.81 | Price 41.33 | Shares 2,357
Proposed sale 6 Apr 2026
Value US$94,680.69 | Price 40.17 | Shares 2,357
Planned sale 2 Apr 2026
Value US$108,000.00 | Price 40.00 | Shares 2,700
Planned sale 25 Mar 2026
Value US$12,000.00 | Price 40.00 | Shares 300
Proposed sale 25 Mar 2026
Value US$118,380.00 | Price 39.46 | Shares 3,000
Planned sale 23 Mar 2026
Value US$1,019,905.56 | Price 39.33 | Shares 25,932
Proposed sale 23 Mar 2026
Value US$1,013,941.20 | Price 39.10 | Shares 25,932
Planned sale 19 Mar 2026
Value US$1,478,763.00 | Price 39.00 | Shares 37,917
Proposed sale 19 Mar 2026
Value US$1,929,723.60 | Price 39.55 | Shares 48,792
Planned sale 17 Mar 2026
Value US$1,907,520.00 | Price 39.74 | Shares 48,000
Proposed sale 17 Mar 2026
Value US$5,686,560.00 | Price 39.49 | Shares 144,000
Buy 5 Mar 2026
Value US$310,176.00 | Price 43.08 | Shares 7,200
Buy 4 Mar 2026
Value US$312,336.00 | Price 43.38 | Shares 7,200
Sale 2 Mar 2026
Value US$4,953,529.68 | Price 40.92 | Shares 121,054
Buy 12 Dec 2025
Value US$99,999.00 | Price 41.00 | Shares 2,439
Buy 3 Oct 2025
Value US$83.94 | Price 41.97 | Shares 2
Buy 26 Sep 2025
Value US$167.04 | Price 41.76 | Shares 4
Buy 28 Aug 2025
Value US$1,244,367.00 | Price 36.10 | Shares 34,470
Buy 14 Aug 2025
Value US$125.76 | Price 31.44 | Shares 4
Buy 13 Aug 2025
Value US$115,000.00 | Price 23.00 | Shares 5,000
Buy 13 Aug 2025
Value US$57,500.00 | Price 23.00 | Shares 2,500
Buy 13 Aug 2025
Value US$2,300.00 | Price 23.00 | Shares 100
Buy 13 Aug 2025
Value US$11,500.00 | Price 23.00 | Shares 500
Buy 13 Aug 2025
Value US$34,500.00 | Price 23.00 | Shares 1,500
Buy 13 Aug 2025
Value US$57,500.00 | Price 23.00 | Shares 2,500
Buy 13 Aug 2025
Value US$80,500.00 | Price 23.00 | Shares 3,500
Buy 13 Aug 2025
Value US$57,500.00 | Price 23.00 | Shares 2,500
Buy 13 Aug 2025
Value US$126,500.00 | Price 23.00 | Shares 5,500
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-06-17 2026-06-15 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
49,244 +10.0%
449.61
US$1,296,206 		49,244 +10.0% 449.61 US$1,296,206
2026-06-15 2026-06-15 PrS Proposed sale
SHELLY BROWN

Officer

Officer
61,610
489.96
US$3,053,981 		61,610 489.96 US$3,053,981
2026-06-12 2026-06-11 PlS Planned sale
Schwarzkopf Cynthia
Non-Executive Director
55,050 -43.1%
137.67
US$536,844 		55,050 -43.1% 137.67 US$536,844
2026-06-12 2026-06-11 PlS Planned sale
Schwarzkopf Cynthia
Non-Executive Director
1,000 -19.3%
41.73
US$100,000 		1,000 -19.3% 41.73 US$100,000
2026-06-12 2026-06-11 PlS Planned sale
Schwarzkopf Cynthia
Non-Executive Director
1,000 -19.3%
41.73
US$100,000 		1,000 -19.3% 41.73 US$100,000
2026-06-11 2026-06-11 PrS Proposed sale
CYNTHIA SCHWARZKOPF

Director

Non-Executive Director
1,000
40.79
US$100,000 		1,000 40.79 US$100,000
2026-06-10 2026-06-09 PlS Planned sale
Jayabalan Harish

EVP, CISO and CRO

Officer
1,000 -11.8%
40.04
US$100,000 		1,000 -11.8% 40.04 US$100,000
2026-06-10 2026-06-09 PlS Planned sale
Jayabalan Harish

EVP, CISO and CRO

Officer
1,000 -11.8%
40.04
US$100,000 		1,000 -11.8% 40.04 US$100,000
2026-06-10 2026-06-08 PlS Planned sale
Jayabalan Harish

EVP, CISO and CRO

Officer
1,000 -12.2%
40.12
US$100,000 		1,000 -12.2% 40.12 US$100,000
2026-06-10 2026-06-08 PlS Planned sale
Jayabalan Harish

EVP, CISO and CRO

Officer
1,000 -12.2%
40.12
US$100,000 		1,000 -12.2% 40.12 US$100,000
2026-06-08 2026-06-08 PrS Proposed sale
HARISH JAYABALAN

Officer

Officer
1,000
39.21
US$100,000 		1,000 39.21 US$100,000
2026-06-04 2026-06-02 PlS Planned sale
Teekell Judson Gray
Non-Executive Director
3,000 -4.1%
42.78
US$128,340 		3,000 -4.1% 42.78 US$128,340
2026-06-04 2026-06-02 PlS Planned sale
Teekell Judson Gray
Non-Executive Director
3,000 -4.1%
42.78
US$128,340 		3,000 -4.1% 42.78 US$128,340
2026-06-04 2026-06-02 PlS Planned sale
Eckert Kurt M.
Non-Executive Director
5,250 -3.6%
42.76
US$224,490 		5,250 -3.6% 42.76 US$224,490
2026-06-04 2026-06-02 PlS Planned sale
Eckert Kurt M.
Non-Executive Director
5,250 -3.6%
42.76
US$224,490 		5,250 -3.6% 42.76 US$224,490
2026-06-04 2026-06-02 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
16,000 -4.7%
42.12
US$673,920 		16,000 -4.7% 42.12 US$673,920
2026-06-04 2026-06-02 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
70,000 -3.9%
42.36
US$2,965,200 		70,000 -3.9% 42.36 US$2,965,200
2026-06-04 2026-06-02 PlS Planned sale
Comly Barbara J.

EVP, GC & Corporate Secretary

Officer
28,000 -3.2%
42.85
US$1,199,800 		28,000 -3.2% 42.85 US$1,199,800
2026-06-04 2026-06-02 PlS Planned sale
Schafer Douglas M. JR

EVP and CIO

Officer
48,000 -10.8%
42.84
US$2,056,320 		48,000 -10.8% 42.84 US$2,056,320
2026-06-04 2026-06-02 PlS Planned sale
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
11,000 -8.6%
42.16
US$463,760 		11,000 -8.6% 42.16 US$463,760
2026-05-18 2026-05-15 PlS Planned sale
3.3
Emmons Lance

EVP and CFO

Officer
35,000 -29.3%
56.36
US$1,972,600 		35,000 -29.3% 56.36 US$1,972,600
2026-05-15 2026-05-15 PrS Proposed sale
3.3
Lance Emmons

Officer

Officer
35,000
55.21
US$1,932,350 		35,000 55.21 US$1,932,350
2026-05-07 2026-05-05 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
15,771 -0.9%
47.92
US$755,746 		15,771 -0.9% 47.92 US$755,746
2026-05-05 2026-05-04 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
54,229 -3.1%
47.26
US$2,562,863 		54,229 -3.1% 47.26 US$2,562,863
2026-05-05 2026-05-04 PlS Planned sale
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
11,000 -8.6%
47.28
US$520,080 		11,000 -8.6% 47.28 US$520,080
2026-05-05 2026-05-04 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
16,000 -4.7%
47.28
US$756,480 		16,000 -4.7% 47.28 US$756,480
2026-05-05 2026-05-04 PlS Planned sale
Teekell Judson Gray
Non-Executive Director
3,000 -5.1%
47.30
US$141,900 		3,000 -5.1% 47.30 US$141,900
2026-05-05 2026-05-04 PlS Planned sale
Schafer Douglas M. JR

EVP and CIO

Officer
48,000 -10.8%
47.25
US$2,268,000 		48,000 -10.8% 47.25 US$2,268,000
2026-05-05 2026-05-04 PlS Planned sale
Comly Barbara J.

EVP, GC & Corporate Secretary

Officer
28,000 -3.2%
47.26
US$1,323,280 		28,000 -3.2% 47.26 US$1,323,280
2026-05-05 2026-05-04 PlS Planned sale
Eckert Kurt M.
Non-Executive Director
5,625 -3.8%
47.29
US$266,006 		5,625 -3.8% 47.29 US$266,006
2026-05-04 2026-05-04 PrS Proposed sale
EDWARD DEITZEL

Officer

Officer
33,000
47.17
US$1,556,610 		33,000 47.17 US$1,556,610
2026-05-04 2026-05-04 PrS Proposed sale
J. GRAY TEEKELL

Director

Non-Executive Director
9,000
47.17
US$424,530 		9,000 47.17 US$424,530
2026-05-04 2026-05-04 PrS Proposed sale
SHELLY BROWN

Officer

Officer
32,000
47.17
US$1,509,440 		32,000 47.17 US$1,509,440
2026-04-17 2026-04-15 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
49,900 -9.3%
43.68
US$2,179,632 		49,900 -9.3% 43.68 US$2,179,632
2026-04-17 2026-04-15 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
104,124 -5.7%
43.36
US$4,514,817 		104,124 -5.7% 43.36 US$4,514,817
2026-04-17 2026-04-15 PlS Planned sale
Gallagher Thomas P.

Chairman & CEO

Executive Director
70,001 -3.7%
43.36
US$3,035,243 		70,001 -3.7% 43.36 US$3,035,243
2026-04-17 2026-04-15 PlS Planned sale
Comly Barbara J.

EVP, GC & Corporate Secretary

Officer
29,667 -3.4%
43.64
US$1,294,668 		29,667 -3.4% 43.64 US$1,294,668
2026-04-15 2026-04-15 PrS Proposed sale
BARBARA J COMLY

Officer

Officer
141,667
42.91
US$6,078,931 		141,667 42.91 US$6,078,931
2026-04-15 2026-04-15 PrS Proposed sale
GALLAGHER INVESTMENTS LLC

Director; Officer

Executive Director
454,125
42.91
US$19,486,504 		454,125 42.91 US$19,486,504
2026-04-15 2026-04-15 PrS Proposed sale
THOMAS P GALLAGHER

Director; Officer

Executive Director
49,900
42.91
US$2,141,209 		49,900 42.91 US$2,141,209
2026-04-09 2026-04-08 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
16,434 -4.8%
42.08
US$691,543 		16,434 -4.8% 42.08 US$691,543
2026-04-09 2026-04-08 PlS Planned sale
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
7,572 -6.1%
42.02
US$318,175 		7,572 -6.1% 42.02 US$318,175
2026-04-09 2026-04-07 PlS Planned sale
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
4,001 -3.3%
42.00
US$168,042 		4,001 -3.3% 42.00 US$168,042
2026-04-09 2026-04-07 PlS Planned sale
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
762 -0.7%
42.00
US$32,004 		762 -0.7% 42.00 US$32,004
2026-04-08 2026-04-07 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
900 -0.3%
42.00
US$37,800 		900 -0.3% 42.00 US$37,800
2026-04-07 2026-04-07 PrS Proposed sale
EDWARD DEITZEL

Officer

Officer
12,335
41.63
US$513,506 		12,335 41.63 US$513,506
2026-04-07 2026-04-07 PrS Proposed sale
SHELLY BROWN

Officer

Officer
17,334
41.63
US$721,614 		17,334 41.63 US$721,614
2026-04-08 2026-04-06 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
2,357 -0.7%
41.33
US$97,415 		2,357 -0.7% 41.33 US$97,415
2026-04-06 2026-04-06 PrS Proposed sale
SHELLY BROWN

Officer

Officer
2,357
40.17
US$94,681 		2,357 40.17 US$94,681
2026-04-03 2026-04-02 PlS Planned sale
Teekell Judson Gray
Non-Executive Director
2,700 -4.4%
40.00
US$108,000 		2,700 -4.4% 40.00 US$108,000
2026-03-26 2026-03-25 PlS Planned sale
Teekell Judson Gray
Non-Executive Director
300 -0.5%
40.00
US$12,000 		300 -0.5% 40.00 US$12,000
2026-03-25 2026-03-25 PrS Proposed sale
J. GRAY TEEKELL

Director

Non-Executive Director
3,000
39.46
US$118,380 		3,000 39.46 US$118,380
2026-03-24 2026-03-23 PlS Planned sale
Brown Shelly

EVP, Chief Strategy Officer

Officer
25,932 -8.0%
39.33
US$1,019,906 		25,932 -8.0% 39.33 US$1,019,906
2026-03-23 2026-03-23 PrS Proposed sale
SHELLY BROWN

Officer

Officer
25,932
39.10
US$1,013,941 		25,932 39.10 US$1,013,941
2026-03-20 2026-03-19 PlS Planned sale
Eckert Kurt M.
Non-Executive Director
37,917 -21.0%
39.00
US$1,478,763 		37,917 -21.0% 39.00 US$1,478,763
2026-03-19 2026-03-19 PrS Proposed sale
KURT M ECKERT

Director

Non-Executive Director
48,792
39.55
US$1,929,724 		48,792 39.55 US$1,929,724
2026-03-18 2026-03-17 PlS Planned sale
Schafer Douglas M. JR

EVP and CIO

Officer
48,000 -10.8%
39.74
US$1,907,520 		48,000 -10.8% 39.74 US$1,907,520
2026-03-17 2026-03-17 PrS Proposed sale
DOUGLAS M. SCHAFER JR.

Officer

Officer
144,000
39.49
US$5,686,560 		144,000 39.49 US$5,686,560
2026-03-06 2026-03-05 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
7,200 +0.2%
43.08
US$310,176 		7,200 +0.2% 43.08 US$310,176
2026-03-05 2026-03-04 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
7,200 +0.2%
43.38
US$312,336 		7,200 +0.2% 43.38 US$312,336
2026-03-04 2026-03-02 S Sale
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
121,054 -2.5%
40.92
US$4,953,530 		121,054 -2.5% 40.92 US$4,953,530
2025-12-15 2025-12-12 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
2,439 +0.1%
41.00
US$99,999 		2,439 +0.1% 41.00 US$99,999
2025-10-06 2025-10-03 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
2 +0.0%
41.97
US$84 		2 +0.0% 41.97 US$84
2025-09-30 2025-09-26 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
4 +0.0%
41.76
US$167 		4 +0.0% 41.76 US$167
2025-09-30 2025-08-28 B Purchase
2.9
STAHL MURRAY
Non-Executive Director Large shareholder
34,470 +0.8%
36.10
US$1,244,367 		34,470 +0.8% 36.10 US$1,244,367
2025-08-18 2025-08-14 B Purchase
3.3
Emmons Lance

EVP and CFO

Officer
4 +inf%
31.44
US$126 		4 +inf% 31.44 US$126
2025-08-15 2025-08-13 B Purchase
Smollen John

EVP Traded Products & Relation

Officer
5,000 +224.6%
23.00
US$115,000 		5,000 +224.6% 23.00 US$115,000
2025-08-15 2025-08-13 B Purchase
Nazarali Jamil
Non-Executive Director
2,500 +inf%
23.00
US$57,500 		2,500 +inf% 23.00 US$57,500
2025-08-15 2025-08-13 B Purchase
Deitzel Edward

EVP, CRO, CCO MIAX Exchanges

Officer
100 +0.3%
23.00
US$2,300 		100 +0.3% 23.00 US$2,300
2025-08-15 2025-08-13 B Purchase
Massad Mark I.
Non-Executive Director
500 +inf%
23.00
US$11,500 		500 +inf% 23.00 US$11,500
2025-08-15 2025-08-13 B Purchase
Massad Mark I.
Non-Executive Director
1,500 +inf%
23.00
US$34,500 		1,500 +inf% 23.00 US$34,500
2025-08-15 2025-08-13 B Purchase
Massad Mark I.
Non-Executive Director
2,500 +inf%
23.00
US$57,500 		2,500 +inf% 23.00 US$57,500
2025-08-15 2025-08-13 B Purchase
Massad Mark I.
Non-Executive Director
3,500 +inf%
23.00
US$80,500 		3,500 +inf% 23.00 US$80,500
2025-08-15 2025-08-13 B Purchase
Jayabalan Harish

EVP, CISO and CRO

Officer
2,500 +63.4%
23.00
US$57,500 		2,500 +63.4% 23.00 US$57,500
2025-08-15 2025-08-13 B Purchase
Moore Lisa
Non-Executive Director
5,500 +inf%
23.00
US$126,500 		5,500 +inf% 23.00 US$126,500
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