CME insider activity
What the executives and directors of CME actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$31M
net open-market flow, 12 m
8 open-market buys, 12 m
7.2%
of sale value on 10b5-1 plans, 12 m
88 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 150 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Sep 16, 2026 | Vroman Ken | 3,803 |
| Sep 16, 2026 | Sammann Derek | 4,277 |
| Sep 16, 2026 | Cutinho Sunil | 4,277 |
| Sep 16, 2026 | Tobin Jack J | 1,047 |
| Sep 16, 2026 | Winkler Julie | 4,277 |
| Sep 16, 2026 | Dennis Michael G. | 3,140 |
| Sep 16, 2026 | Sprague Suzanne | 4,016 |
| Sep 16, 2026 | Fitzpatrick Lynne | 5,428 |
| Sep 16, 2026 | McCourt Timothy Francis | 3,926 |
| Sep 16, 2026 | Marchese John Clifford | 1,025 |
| Sep 15, 2026 | DUFFY TERRENCE A | 22K |
| Jun 25, 2026 | GEPSMAN MARTIN J | 645 |
| Jun 25, 2026 | SHEPARD WILLIAM R | 1,067 |
| Jun 25, 2026 | SIEGEL HOWARD J | 1,067 |
| Jun 25, 2026 | Lucas Deborah J | 645 |
| Jun 25, 2026 | Carey Charles P | 1,067 |
| Jun 25, 2026 | Durkin Bryan T | 645 |
| Jun 25, 2026 | Suskind Dennis | 645 |
| Jun 25, 2026 | Bitsberger Timothy S. | 645 |
| Jun 25, 2026 | Kaye Daniel G | 645 |
| Jun 25, 2026 | Hobert William W | 1,067 |
| Jun 25, 2026 | Cook Elizabeth A | 645 |
| Jun 25, 2026 | Tierney Robert J JR | 645 |
| Jun 25, 2026 | Lockett Phyllis M | 645 |
| Jun 25, 2026 | Ford Harold Eugene Jr. | 1,067 |
| Jun 25, 2026 | Maloney Patrick W | 645 |
| Jun 25, 2026 | Mulchrone Patrick J | 645 |
| Jun 25, 2026 | Seifu Rahael | 645 |
| Jun 25, 2026 | Benesh Kathryn | 645 |
| Mar 15, 2026 | Tobin Jack J | 892 |
| Mar 15, 2026 | DUFFY TERRENCE A | 91K |
| Mar 15, 2026 | Piell Hilda Harris | 10K |
| Mar 15, 2026 | Vroman Ken | 10K |
| Mar 15, 2026 | Sammann Derek | 12K |
| Mar 15, 2026 | Cutinho Sunil | 12K |
| Mar 15, 2026 | Winkler Julie | 12K |
| Mar 15, 2026 | Sprague Suzanne | 8,019 |
| Mar 15, 2026 | Fitzpatrick Lynne | 8,019 |
| Mar 15, 2026 | McCourt Timothy Francis | 8,408 |
| Mar 15, 2026 | Marcus Jonathan L | 7,908 |
| Dec 31, 2025 | DUFFY TERRENCE A | 10K |
| Nov 7, 2025 | Piell Hilda Harris | 973 |
| Sep 16, 2025 | Piell Hilda Harris | 3,886 |
| Sep 16, 2025 | Vroman Ken | 3,904 |
| Sep 16, 2025 | Sammann Derek | 4,522 |
| Sep 16, 2025 | Cutinho Sunil | 4,540 |
| Sep 16, 2025 | Tobin Jack J | 1,746 |
| Sep 16, 2025 | Winkler Julie | 4,504 |
| Sep 16, 2025 | Dennis Michael G. | 2,897 |
| Sep 16, 2025 | Sprague Suzanne | 4,008 |
| Sep 16, 2025 | Fitzpatrick Lynne | 5,366 |
| Sep 16, 2025 | Marcus Jonathan L | 3,017 |
| Sep 15, 2025 | DUFFY TERRENCE A | 23K |
| Sep 15, 2025 | McCourt Timothy Francis | 3,506 |
| Jun 25, 2025 | GEPSMAN MARTIN J | 532 |
| Jun 25, 2025 | SHEPARD WILLIAM R | 879 |
| Jun 25, 2025 | SIEGEL HOWARD J | 879 |
| Jun 25, 2025 | Lucas Deborah J | 532 |
| Jun 25, 2025 | Carey Charles P | 879 |
| Jun 25, 2025 | Durkin Bryan T | 532 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| Granted | 185K |
| Bought on market | 2,345 |
| Other in | 27K |
| Withheld for tax | 76K |
| Planned sales (10b5-1) | 6,974 |
| Discretionary sales | 101K |
| Gifts | 1,078 |
| Other out | 27K |
| Kept | 1,624 |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| SHEPARD WILLIAM R | 2,076 | 3,621 | 174.4 |
| Hobert William W | 82K | 108K | 131.7 |
| SIEGEL HOWARD J | 80K | 49K | 61.1 |
| DUFFY TERRENCE A | 79K | 62K | 78.7 |
| Mulchrone Patrick J | 26K | 29K | 113.3 |
Who holds what
the 14 largest holdings of 35| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| SHEPARD WILLIAM R Last trade Jun 25, 2026 | Director | 264K | $661K | – | net buying over the year: 4 months buying, 0 months selling | Jun 25, 2026 |
| Hobert William W | Director | 127K | – | – | – | |
| SIEGEL HOWARD J Last trade Mar 13, 2025 | Director | 70K | – | – | Mar 13, 2025 | |
| DUFFY TERRENCE A Chairman and CEO Last trade Sep 10, 2026 | CEO | 62K | – | $21M | net selling over the year: 0 months buying, 3 months selling | Sep 10, 2026 |
| Mulchrone Patrick J | Director | 54K | – | – | – | |
| Durkin Bryan T Last trade Feb 23, 2026 | Director | 44K | – | $1.3M | net selling over the year: 0 months buying, 1 month selling | Feb 23, 2026 |
| Holzrichter Julie Sr MD Chief Operating Officer Last trade Aug 15, 2023 | COO | 40K | – | – | Aug 15, 2023 | |
| Cook Elizabeth A Last trade Sep 14, 2026 | Director | 39K | – | $460K | net selling over the year: 0 months buying, 2 months selling | Sep 14, 2026 |
| GERDES LARRY G Last trade Apr 25, 2025 | Director | 37K | – | – | Apr 25, 2025 | |
| Winkler Julie Sr MD Chief Commercial Officer Last trade Feb 13, 2025 | Officer | 32K | – | – | Feb 13, 2025 | |
| Piell Hilda Harris Sr MD & Chief HR Officer Last trade May 18, 2026 | Officer | 28K | – | $1.8M | net selling over the year: 0 months buying, 1 month selling | May 18, 2026 |
| Fitzpatrick Lynne President and CFO Last trade Sep 15, 2024 | CFO | 27K | – | – | Sep 15, 2024 | |
| Sammann Derek Sr MD Gl Hd Commodities Mkts Last trade Nov 20, 2025 | Officer | 26K | – | $2.0M | net selling over the year: 0 months buying, 1 month selling | Nov 20, 2025 |
| Tobin Jack J MD Chief Accounting Officer Last trade Sep 5, 2018 | Officer | 26K | – | – | Sep 5, 2018 |
Open-market trade log
the 60 most recent of 1,012| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | Cook Elizabeth A (Director) 500 shares $280.11 −1.8% since trade filed Sep 14, 2026 | Discretionary sale | 500 | $280.11 | $140K | −1.8% | Sep 14, 2026 |
| Sep 10, 2026 | DUFFY TERRENCE A (CEO) 628 shares $275.03 +0.0% since trade filed Sep 11, 2026 | Discretionary sale | 628 | $275.03 | $173K | +0.0% | Sep 11, 2026 |
| Sep 10, 2026 | DUFFY TERRENCE A (CEO) 14K shares $274.41 +0.2% since trade filed Sep 11, 2026 | Discretionary sale | 14K | $274.41 | $3.9M | +0.2% | Sep 11, 2026 |
| Jun 25, 2026 | SHEPARD WILLIAM R (Director) 14 shares $230.57 +19.3% since trade filed Jun 29, 2026 | Open-market buy | 14 | $230.57 | $3K | +19.3% | Jun 29, 2026 |
| Jun 25, 2026 | SHEPARD WILLIAM R (Director) 325 shares $230.57 +19.3% since trade filed Jun 29, 2026 | Open-market buy | 325 | $230.57 | $75K | +19.3% | Jun 29, 2026 |
| May 18, 2026 | Piell Hilda Harris (Officer) 5,753 shares $304.63 −9.7% since trade filed May 19, 2026 | Discretionary sale | 5,753 | $304.63 | $1.8M | −9.7% | May 19, 2026 |
| May 15, 2026 | DUFFY TERRENCE A (CEO) 9,004 shares $299.58 −8.2% since trade filed May 18, 2026 | Discretionary sale | 9,004 | $299.58 | $2.7M | −8.2% | May 18, 2026 |
| May 15, 2026 | DUFFY TERRENCE A (CEO) 26K shares $298.14 −7.8% since trade filed May 18, 2026 | Discretionary sale | 26K | $298.14 | $7.8M | −7.8% | May 18, 2026 |
| Mar 26, 2026 | SHEPARD WILLIAM R (Director) 62 shares $297.38 −7.5% since trade filed Mar 30, 2026 | Open-market buy | 62 | $297.38 | $18K | −7.5% | Mar 30, 2026 |
| Mar 26, 2026 | SHEPARD WILLIAM R (Director) 1,408 shares $297.38 −7.5% since trade filed Mar 30, 2026 | Open-market buy | 1,408 | $297.38 | $419K | −7.5% | Mar 30, 2026 |
| Mar 17, 2026 | Marcus Jonathan L (Officer) 3,291 shares $313.37 −12.2% since trade filed Mar 23, 2026 late | Planned sale (10b5-1) | 3,291 | $313.37 | $1.0M | −12.2% | Mar 23, 2026 late |
| Mar 17, 2026 | Marcus Jonathan L (Officer) 3,291 shares $333.37 −17.5% since trade filed Mar 19, 2026 | Planned sale (10b5-1) | 3,291 | $333.37 | $1.1M | −17.5% | Mar 19, 2026 |
| Mar 12, 2026 | Vroman Ken (Officer) 5,160 shares $309.00 −11.0% since trade filed Mar 12, 2026 | Discretionary sale | 5,160 | $309.00 | $1.6M | −11.0% | Mar 12, 2026 |
| Mar 6, 2026 | Cook Elizabeth A (Director) 1,000 shares $320.00 −14.1% since trade filed Mar 9, 2026 | Discretionary sale | 1,000 | $320.00 | $320K | −14.1% | Mar 9, 2026 |
| Feb 23, 2026 | Durkin Bryan T (Director) 4,200 shares $309.65 −11.2% since trade filed Feb 23, 2026 | Discretionary sale | 4,200 | $309.65 | $1.3M | −11.2% | Feb 23, 2026 |
| Feb 20, 2026 | GEPSMAN MARTIN J (Director) 300 shares $305.90 −10.1% since trade filed Feb 20, 2026 | Discretionary sale | 300 | $305.90 | $92K | −10.1% | Feb 20, 2026 |
| Feb 6, 2026 | Suskind Dennis (Director) 748 shares $300.00 −8.3% since trade filed Feb 9, 2026 | Discretionary sale | 748 | $300.00 | $224K | −8.3% | Feb 9, 2026 |
| Dec 30, 2025 | SHEPARD WILLIAM R (Director) 11 shares $278.37 −1.2% since trade filed Jan 2, 2026 | Open-market buy | 11 | $278.37 | $3K | −1.2% | Jan 2, 2026 |
| Dec 30, 2025 | SHEPARD WILLIAM R (Director) 251 shares $278.37 −1.2% since trade filed Jan 2, 2026 | Open-market buy | 251 | $278.37 | $70K | −1.2% | Jan 2, 2026 |
| Dec 11, 2025 | DUFFY TERRENCE A (CEO) 12K shares $270.05 +1.8% since trade filed Dec 15, 2025 | Discretionary sale | 12K | $270.05 | $3.2M | +1.8% | Dec 15, 2025 |
| Dec 11, 2025 | DUFFY TERRENCE A (CEO) 13K shares $269.10 +2.2% since trade filed Dec 15, 2025 | Discretionary sale | 13K | $269.10 | $3.5M | +2.2% | Dec 15, 2025 |
| Nov 20, 2025 | Sammann Derek (Officer) 1,314 shares $275.74 −0.3% since trade filed Nov 21, 2025 | Discretionary sale | 1,314 | $275.74 | $362K | −0.3% | Nov 21, 2025 |
| Nov 20, 2025 | Sammann Derek (Officer) 5,886 shares $275.65 −0.2% since trade filed Nov 21, 2025 | Discretionary sale | 5,886 | $275.65 | $1.6M | −0.2% | Nov 21, 2025 |
| Nov 3, 2025 | Ford Harold Eugene Jr. (Director) 1,000 shares $263.53 +4.4% since trade filed Nov 4, 2025 | Discretionary sale | 1,000 | $263.53 | $264K | +4.4% | Nov 4, 2025 |
| Sep 25, 2025 | SHEPARD WILLIAM R (Director) 12 shares $265.22 +3.7% since trade filed Sep 26, 2025 | Open-market buy | 12 | $265.22 | $3K | +3.7% | Sep 26, 2025 |
| Sep 25, 2025 | SHEPARD WILLIAM R (Director) 262 shares $265.19 +3.7% since trade filed Sep 26, 2025 | Open-market buy | 262 | $265.19 | $70K | +3.7% | Sep 26, 2025 |
| Sep 18, 2025 | Marcus Jonathan L (Officer) 392 shares $262.00 +5.0% since trade filed Sep 18, 2025 | Planned sale (10b5-1) | 392 | $262.00 | $103K | +5.0% | Sep 18, 2025 |
| Sep 16, 2025 | McCourt Timothy Francis (Officer) 379 shares $259.83 +5.9% since trade filed Sep 17, 2025 | Discretionary sale | 379 | $259.83 | $98K | +5.9% | Sep 17, 2025 |
| Sep 16, 2025 | Marcus Jonathan L (Officer) 376 shares $258.96 +6.2% since trade filed Sep 17, 2025 | Planned sale (10b5-1) | 376 | $258.96 | $97K | +6.2% | Sep 17, 2025 |
| Aug 26, 2025 | Cutinho Sunil (Officer) 5,930 shares $272.10 +1.1% since trade filed Aug 26, 2025 | Discretionary sale | 5,930 | $272.10 | $1.6M | +1.1% | Aug 26, 2025 |
| Aug 26, 2025 | Cutinho Sunil (Officer) 5,966 shares $270.85 +1.5% since trade filed Aug 26, 2025 | Discretionary sale | 5,966 | $270.85 | $1.6M | +1.5% | Aug 26, 2025 |
| Jun 25, 2025 | SHEPARD WILLIAM R (Director) 11 shares $270.53 +1.7% since trade filed Jun 26, 2025 | Open-market buy | 11 | $270.53 | $3K | +1.7% | Jun 26, 2025 |
| Jun 25, 2025 | SHEPARD WILLIAM R (Director) 256 shares $270.53 +1.7% since trade filed Jun 26, 2025 | Open-market buy | 256 | $270.53 | $69K | +1.7% | Jun 26, 2025 |
| Jun 10, 2025 | Carey Charles P (Director) 150 shares $265.36 +3.6% since trade filed Jun 11, 2025 | Discretionary sale | 150 | $265.36 | $40K | +3.6% | Jun 11, 2025 |
| Jun 10, 2025 | Carey Charles P (Director) 350 shares $265.35 +3.7% since trade filed Jun 11, 2025 | Discretionary sale | 350 | $265.35 | $93K | +3.7% | Jun 11, 2025 |
| May 22, 2025 | Kaye Daniel G (Director) 500 shares $282.42 −2.6% since trade filed May 23, 2025 | Discretionary sale | 500 | $282.42 | $141K | −2.6% | May 23, 2025 |
| May 20, 2025 | Marcus Jonathan L (Officer) 390 shares $277.50 −0.9% since trade filed May 21, 2025 | Planned sale (10b5-1) | 390 | $277.50 | $108K | −0.9% | May 21, 2025 |
| May 19, 2025 | Lockett Phyllis M (Director) 1,060 shares $277.88 −1.0% since trade filed May 20, 2025 | Discretionary sale | 1,060 | $277.88 | $295K | −1.0% | May 20, 2025 |
| May 15, 2025 | GEPSMAN MARTIN J (Director) 300 shares $273.17 +0.7% since trade filed May 19, 2025 | Discretionary sale | 300 | $273.17 | $82K | +0.7% | May 19, 2025 |
| May 15, 2025 | Carey Charles P (Director) 3,000 shares $272.56 +0.9% since trade filed May 19, 2025 | Discretionary sale | 3,000 | $272.56 | $818K | +0.9% | May 19, 2025 |
| May 5, 2025 | Sammann Derek (Officer) 2,175 shares $280.63 −2.0% since trade filed May 7, 2025 | Discretionary sale | 2,175 | $280.63 | $610K | −2.0% | May 7, 2025 |
| May 5, 2025 | Sammann Derek (Officer) 2,475 shares $280.60 −2.0% since trade filed May 7, 2025 | Discretionary sale | 2,475 | $280.60 | $694K | −2.0% | May 7, 2025 |
| Apr 29, 2025 | Suskind Dennis (Director) 1,000 shares $271.28 +1.4% since trade filed Apr 30, 2025 | Discretionary sale | 1,000 | $271.28 | $271K | +1.4% | Apr 30, 2025 |
| Apr 25, 2025 | GERDES LARRY G (Director) 2,000 shares $266.12 +3.4% since trade filed Apr 28, 2025 | Discretionary sale | 2,000 | $266.12 | $532K | +3.4% | Apr 28, 2025 |
| Apr 24, 2025 | GERDES LARRY G (Director) 1,000 shares $263.10 +4.5% since trade filed Apr 28, 2025 | Discretionary sale | 1,000 | $263.10 | $263K | +4.5% | Apr 28, 2025 |
| Apr 24, 2025 | GERDES LARRY G (Director) 1,000 shares $265.10 +3.8% since trade filed Apr 28, 2025 | Discretionary sale | 1,000 | $265.10 | $265K | +3.8% | Apr 28, 2025 |
| Mar 26, 2025 | SHEPARD WILLIAM R (Director) 12 shares $262.62 +4.7% since trade filed Mar 27, 2025 | Open-market buy | 12 | $262.62 | $3K | +4.7% | Mar 27, 2025 |
| Mar 26, 2025 | SHEPARD WILLIAM R (Director) 263 shares $262.62 +4.7% since trade filed Mar 27, 2025 | Open-market buy | 263 | $262.62 | $69K | +4.7% | Mar 27, 2025 |
| Mar 14, 2025 | Lucas Deborah J (Director) 1,500 shares $256.95 +7.0% since trade filed Mar 18, 2025 | Discretionary sale | 1,500 | $256.95 | $385K | +7.0% | Mar 18, 2025 |
| Mar 13, 2025 | SIEGEL HOWARD J (Director) 10K shares $260.00 +5.8% since trade filed Mar 17, 2025 | Discretionary sale | 10K | $260.00 | $2.6M | +5.8% | Mar 17, 2025 |
| Mar 11, 2025 | DUFFY TERRENCE A (CEO) 30K shares $259.18 +6.1% since trade filed Mar 11, 2025 | Discretionary sale | 30K | $259.18 | $7.8M | +6.1% | Mar 11, 2025 |
| Mar 3, 2025 | Sprague Suzanne (COO) 1,500 shares $256.83 +7.1% since trade filed Mar 4, 2025 | Discretionary sale | 1,500 | $256.83 | $385K | +7.1% | Mar 4, 2025 |
| Feb 27, 2025 | Piell Hilda Harris (Officer) 3,984 shares $250.47 +9.8% since trade filed Feb 28, 2025 | Discretionary sale | 3,984 | $250.47 | $998K | +9.8% | Feb 28, 2025 |
| Feb 13, 2025 | Vroman Ken (Officer) 5,066 shares $250.00 +10.0% since trade filed Feb 14, 2025 | Discretionary sale | 5,066 | $250.00 | $1.3M | +10.0% | Feb 14, 2025 |
| Feb 13, 2025 | Winkler Julie (Officer) 12K shares $249.17 +10.4% since trade filed Feb 14, 2025 | Discretionary sale | 12K | $249.17 | $2.9M | +10.4% | Feb 14, 2025 |
| Jan 16, 2025 | SHEPARD WILLIAM R (Director) 60 shares $227.96 +20.7% since trade filed Mar 27, 2025 late | Open-market buy | 60 | $227.96 | $14K | +20.7% | Mar 27, 2025 late |
| Jan 16, 2025 | SHEPARD WILLIAM R (Director) 60 shares $227.96 +20.7% since trade filed Jan 17, 2025 | Open-market buy | 60 | $227.96 | $14K | +20.7% | Jan 17, 2025 |
| Jan 16, 2025 | SHEPARD WILLIAM R (Director) 1,362 shares $227.96 +20.7% since trade filed Mar 27, 2025 late | Open-market buy | 1,362 | $227.96 | $311K | +20.7% | Mar 27, 2025 late |
| Jan 16, 2025 | SHEPARD WILLIAM R (Director) 1,369 shares $227.96 +20.7% since trade filed Jan 17, 2025 | Open-market buy | 1,369 | $227.96 | $312K | +20.7% | Jan 17, 2025 |
| Dec 27, 2024 | SHEPARD WILLIAM R (Director) 12 shares $232.89 +18.1% since trade filed Dec 30, 2024 | Open-market buy | 12 | $232.89 | $3K | +18.1% | Dec 30, 2024 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
225 Forms 4, 3 years
6 filed late
5 amendments
2.4 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.