CME insider buying and SEC filings, explained
CME Group Inc. · CIK 1156375
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$667K
Insiders who bought
1
Sold (not marked 10b5-1)
$33.7M
Planned sales (10b5-1)
$1.0M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Nov 2, 2026 | Sale | Julie Winkler (Sr MD Chief Commercial Officer) sold 10,079 shares at about $305.15 ($3.1M). Holdings down 32% to 21,482 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 2, 2026, 7:59 PM ET |
| Oct 27, 2026 | Sale | Sunil Cutinho (Chief Information Officer) sold 5,000 shares at $298.70 ($1.5M). Holdings down 20% to 20,037 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 27, 2026, 5:16 PM ET |
| Oct 22, 2026 | Sale | Martin J. Gepsman (Director) sold 400 shares at $302.50 ($121K). Holdings down 2% to 25,244 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Oct 22, 2026, 5:39 PM ET |
| Sep 25, 2026 | Purchase (code P) | William R. Shepard (Director) bought 293 shares indirectly (by trust) at $268.76 ($79K), reported as a purchase (code P). Holdings by trust up <1% to 263,289 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 28, 2026 |
| Sep 14, 2026 | Sale | Elizabeth A Cook (Director) sold 500 shares indirectly (by trust) at $280.11 ($140K). Holdings by trust down 3% to 17,916 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 14, 2026 |
| Sep 10, 2026 | Sale | Terrence A. Duffy (CEO and Director) sold 15,000 shares at about $274.44 ($4.1M). Holdings down 27% to 40,630 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 11, 2026 |
| Jun 25, 2026 | Purchase (code P) | William R. Shepard (Director) bought 339 shares directly and indirectly (by trust) at $230.57 ($78K), reported as a purchase (code P). Direct holdings up <1% to 3,621 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 29, 2026 |
| May 18, 2026 | Sale | Hilda Harris Piell (Sr MD & Chief HR Officer) sold 5,753 shares at $304.63 ($1.8M). Holdings down 17% to 27,702 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 19, 2026 |
| May 15, 2026 | Sale | Terrence A. Duffy (CEO and Director) sold 35,000 shares at about $298.51 ($10.4M). Holdings down 39% to 55,630 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 18, 2026 |
| Mar 26, 2026 | Purchase (code P) | William R. Shepard (Director) bought 1,470 shares directly and indirectly (by trust) at $297.38 ($437K), reported as a purchase (code P). Direct holdings up 3% to 2,539 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 30, 2026 |
| Mar 17, 2026 | Planned (10b5-1) Amended filing | Jonathan L Marcus (Sr MD General Counsel) sold 3,291 shares at $313.37 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 31% to 7,192 shares. This amends a filing from Mar 19. | SEC filing Filed Mar 23, 2026 |
| Mar 12, 2026 | Sale | Ken Vroman (Chief Transformation Officer) sold 5,160 shares at about $309.00 ($1.6M). Holdings down 26% to 14,910 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 12, 2026 |
| Mar 6, 2026 | Sale | Elizabeth A Cook (Director) sold 1,000 shares indirectly (by trust) at $320.00 ($320K). Holdings by trust down 5% to 17,771 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 9, 2026 |
| Feb 23, 2026 | Sale | Bryan T Durkin (Director) sold 4,200 shares at about $309.65 ($1.3M). Holdings down 9% to 43,007 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 23, 2026 |
| Feb 20, 2026 | Sale | Martin J. Gepsman (Director) sold 300 shares at $305.90 ($92K). Holdings down 1% to 24,999 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 20, 2026 |
| Feb 6, 2026 | Sale | Dennis Suskind (Director) sold 748 shares at $300.00 ($224K). Holdings down 22% to 2,699 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 9, 2026 |
| Dec 30, 2025 | Purchase (code P) | William R. Shepard (Director) bought 262 shares directly and indirectly (by trust) at $278.37 ($73K), reported as a purchase (code P). Direct holdings up <1% to 2,477 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jan 2, 2026 |
| Dec 11, 2025 | Sale | Terrence A. Duffy (CEO and Director) sold 25,000 shares at about $269.55 ($6.7M). Holdings down 28% to 65,804 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 15, 2025 |
| Nov 20, 2025 | Sale | Derek Sammann (Sr MD Gl Hd Commodities Mkts) sold 7,200 shares indirectly (by trust) at about $275.67 ($2.0M). Holdings by trust down 35% to 11,028 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 21, 2025 |
| Nov 3, 2025 | Sale | Harold Eugene Ford Jr. (Director) sold 1,000 shares at about $263.53 ($264K). Holdings down 48% to 1,091 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 4, 2025 |
45 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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