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Miami International Holdings, Inc. insider trading

In twelve months insiders at Miami International Holdings bought $723K and sold $80.0M on the open market; 66 of the 68 sales were under plans set months before.

Bought on the open market$723K3 purchases
Sold on the open market$80.0M68 sales
Sales set in advance66 of 68under Rule 10b5-1 plans
Pay taken in stockNone
New to this? How to read this page
  1. Insiders are the people who run the company: officers, directors and owners of 10% or more. They must report a trade on Form 4 within two business days.
  2. A purchase on the open market is the strongest sign: the insider spent their own money.
  3. A sale under a trading plan (Rule 10b5-1) says little: its dates were fixed months before. Sales outside a plan say more, but insiders sell for many reasons, such as taxes or a house.
  4. Grants, option exercises and shares held back for tax are left out.
  5. What is a Form 4? · Form 4 codes

What kind of trades

3 purchases worth $723K against 68 sales worth $80.0M; 66 of the sales were under plans set months before.

Purchasebought with their own money
Pay in stock, own choiceowed cash, chose shares
Sale outside a planthe insider picked the day
Sale under a plandates fixed months before
Says littlecompany plans, board pay, cash units
Bought
3 open market
Sold
266 under a plan

Every Form 4 line of the last twelve months, counted by kind. The grades come from the filing itself: whether the insider paid cash, whether a plan set the date, whether pay was taken in stock by choice.

Insider trades on the share price

last twelve months

67 marks over twelve months, each in its grade: solid for the stronger signs, hollow or grey for the ones that say little.

PurchasePay in stock, own choiceSale outside a planSale under a planSays little

The blue line is the daily close over twelve months. Each mark is one insider's trades on one day, on that day's price, sized by dollar value. Solid marks are the stronger signs; hollow and grey marks say little. Hover or tap a mark for who, how much and why.

Trades worth a closer look

A purchase stands out when two or more of these hold: a senior insider, several insiders buying within 90 days, a fall of 10% or more in the three months before, or over $1 million. A sale outside a plan is judged the same way. These are the Feed's rules.

Who traded

dollars, twelve months

11 insiders traded. The most: Gallagher Thomas P., sale under a plan $32.3M.

One row per insider, sold to the left and bought to the right, split by grade: the paler part of a bar is the part that says little.

How it compares

every company on the site

Open-market sales, twelve months

Open-market purchases, twelve months

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every Form 4 line

    Purchase: bought on the open market with their own moneyTook pay in stock, own choice: owed cash, chose shares instead; a softer signSale: sold on the open market, not under a plan set in advanceSale, trading plan: under a Rule 10b5-1 plan set up months before, so the date was fixed in advanceGrey lines: plan purchases, pay in stock taken by the whole board or under a company plan, and units paid in cash; they say little about the insider's own view
    TradedInsiderRoleTypeSharesPriceValueFiling
    22 October 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 4 August 202612,306$35.04$431,202Form 4
    22 October 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 2 October 20268,000$35.06$280,480Form 4
    2 October 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 2 October 202640,000$33.34$1.3 millionForm 4
    16 September 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 16 September 202621,217$38.61$819,188Form 4
    3 September 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance47,000$42.43$2.0 millionForm 4
    3 September 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 4 August 202611,000$42.21$464,310Form 4
    2 September 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 4 August 202644,445$40.49$1.8 millionForm 4
    2 September 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 2 July 202648,000$40.48$1.9 millionForm 4
    2 September 2026Teekell Judson Gray, by estate of Byrum W. TeekellDirectorSaletrading plan set in advance · Form 144 notice 4 August 20265,545$41.58$230,561Form 4
    2 September 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 4 August 20263,000$40.89$122,670Form 4
    19 August 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance149,700$41.13$6.2 millionForm 4
    17 August 2026Schwarzkopf CynthiaDirectorSaletrading plan set in advance · Form 144 notice 15 July 20265,000$42.85$214,250Form 4
    17 August 2026Emmons LanceEVP and CFOSaletrading plan set in advance · Form 144 notice 17 August 202635,000$42.83$1.5 millionForm 4
    4 August 2026Eckert Kurt M.DirectorSaletrading plan set in advance · Form 144 notice 2 July 20261,063$45.80$48,685Form 4
    4 August 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 4 August 20263,000$45.79$137,370Form 4
    4 August 2026Jayabalan HarishEVP, CISO and CROSaletrading plan set in advance · Form 144 notice 4 August 202620,000$45.90$918,000Form 4
    4 August 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 4 August 202644,445$45.69$2.0 millionForm 4
    4 August 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 4 August 202611,000$45.78$503,580Form 4
    4 August 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 2 July 202648,000$45.71$2.2 millionForm 4
    4 August 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance48,334$45.69$2.2 millionForm 4
    15 July 2026Schwarzkopf CynthiaDirectorSaletrading plan set in advance · Form 144 notice 15 July 20265,000$42.00$210,000Form 4
    13 July 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 15 April 202628,000$41.98$1.2 millionForm 4
    13 July 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202670,000$42.52$3.0 millionForm 4
    7 July 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202628,228$42.27$1.2 millionForm 4
    6 July 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202641,772$42.09$1.8 millionForm 4
    6 July 2026Jayabalan HarishEVP, CISO and CROSaletrading plan set in advance · Form 144 notice 6 July 202620,000$42.12$842,400Form 4
    6 July 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 4 May 202611,000$42.04$462,440Form 4
    6 July 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 6 July 202616,000$42.13$674,080Form 4
    2 July 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 4 May 20263,000$40.00$120,000Form 4
    2 July 2026Eckert Kurt M.DirectorSaletrading plan set in advance · Form 144 notice 2 July 20265,250$39.35$206,588Form 4
    2 July 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 15 April 202628,000$41.22$1.2 millionForm 4
    2 July 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 2 July 202648,000$41.22$2.0 millionForm 4
    15 June 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 15 June 20264,714$44.23$208,500Form 4
    11 June 2026Schwarzkopf CynthiaDirectorSaletrading plan set in advance · Form 144 notice 11 June 202619,500$41.73$813,735Form 4
    9 June 2026Jayabalan HarishEVP, CISO and CROSaletrading plan set in advance · Form 144 notice 8 June 20269,783$40.04$391,711Form 4
    8 June 2026Jayabalan HarishEVP, CISO and CROSaletrading plan set in advance · Form 144 notice 8 June 202610,217$40.12$409,906Form 4
    2 June 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 4 May 20263,000$42.78$128,340Form 4
    2 June 2026Eckert Kurt M.DirectorSaletrading plan set in advance · Form 144 notice 19 March 20265,250$42.76$224,490Form 4
    2 June 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 15 April 202628,000$42.85$1.2 millionForm 4
    2 June 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 4 May 202611,000$42.16$463,760Form 4
    2 June 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 17 March 202648,000$42.84$2.1 millionForm 4
    2 June 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 4 May 202616,000$42.12$673,920Form 4
    2 June 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202670,000$42.36$3.0 millionForm 4
    15 May 2026Emmons LanceEVP and CFOSaletrading plan set in advance · Form 144 notice 15 May 202635,000$56.36$2.0 millionForm 4
    5 May 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202615,771$47.92$755,746Form 4
    4 May 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202654,229$47.26$2.6 millionForm 4
    4 May 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 4 May 202611,000$47.28$520,080Form 4
    4 May 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 4 May 202616,000$47.28$756,480Form 4
    4 May 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 4 May 20263,000$47.30$141,900Form 4
    4 May 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 17 March 202648,000$47.25$2.3 millionForm 4
    4 May 2026Eckert Kurt M.DirectorSaletrading plan set in advance · Form 144 notice 19 March 20265,625$47.29$266,006Form 4
    4 May 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 15 April 202628,000$47.26$1.3 millionForm 4
    15 April 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202670,001$43.36$3.0 millionForm 4
    15 April 2026Gallagher Thomas P., by Gallagher Investments, LLCChairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 2026104,124$43.36$4.5 millionForm 4
    15 April 2026Gallagher Thomas P.Chairman & CEOSaletrading plan set in advance · Form 144 notice 15 April 202649,900$43.68$2.2 millionForm 4
    15 April 2026Comly Barbara J.EVP, GC & Corporate SecretarySaletrading plan set in advance · Form 144 notice 15 April 202629,667$43.64$1.3 millionForm 4
    8 April 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 7 April 202616,434$42.08$691,543Form 4
    8 April 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 7 April 20267,572$42.02$318,175Form 4
    7 April 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 7 April 2026762$42.00$32,004Form 4
    7 April 2026Deitzel EdwardEVP, CRO, CCO MIAX ExchangesSaletrading plan set in advance · Form 144 notice 7 April 20264,001$42.00$168,042Form 4
    7 April 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 7 April 2026900$42.00$37,800Form 4
    6 April 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 7 April 20262,357$41.33$97,415Form 4
    2 April 2026Teekell Judson GrayDirectorSaletrading plan set in advance · Form 144 notice 25 March 20262,700$40.00$108,000Form 4
    25 March 2026Teekell Judson GrayDirectorSaleafter a 18% fall over three months · Form 144 notice 25 March 2026300$40.00$12,000Form 4
    23 March 2026Brown ShellyEVP, Chief Strategy OfficerSaletrading plan set in advance · Form 144 notice 23 March 202625,932$39.33$1.0 millionForm 4
    19 March 2026Eckert Kurt M.DirectorSaletrading plan set in advance · Form 144 notice 19 March 202637,917$39.00$1.5 millionForm 4
    17 March 2026Schafer Douglas M. JrEVP and CIOSaletrading plan set in advance · Form 144 notice 17 March 202648,000$39.74$1.9 millionForm 4
    5 March 2026Stahl Murray, horizon Kinetics Asset Management LLCDirectorPurchaseafter a 7% fall over three months7,200$43.08$310,176Form 4
    4 March 2026Stahl Murray, horizon Kinetics Asset Management LLCDirectorPurchaseafter a 4% fall over three months7,200$43.38$312,336Form 4
    2 March 2026Stahl Murray, horizon Kinetics Asset Management LLCDirectorSaleafter a 4% fall over three months121,054$40.92$5.0 millionForm 4
    12 December 2025Stahl Murray, horizon Kinetics Asset Management LLCDirectorPurchaseafter a 14% rise over three months2,439$41.00$99,999Form 4
    A filing with several lines appears once per line.
    Read morePay taken in stock by the insider's own choice has the filing's footnote, word for word, in the note under it; for the others, hold the pointer on the type. An award filed at no price shows n/a.