SEC Form 4
CME Group Inc. (CME) insider trading
In the 12 months to Oct 24, 2026, 10 CME insiders reported open-market sales of $30.1M across 14 filings; one director bought $666.9K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $30.1M
- 14 filings · 10 insiders
- Open-market purchases
- $666.9K
- 4 filings · William R. Shepard, Director
- Pre-arranged sales (10b5-1)
- 1 of 14
- $1.0M of $30.1M sold (3%)
Who traded CME, and when
- Purchase
- Sale
- Sale, pre-arranged (10b5-1)
CME daily close from Oct 24, 2025 to Oct 23, 2026, between $218.58 and $326.46, last $305.71. 14 sale and 4 purchase filings by 11 insiders, marked at their filing dates. Terrence A. Duffy, Chairman and CEO: sold $21.3M across 3 filings, first filed Dec 15, 2025, last Sep 11, 2026. Derek Sammann, Sr MD Gl Hd Commodities Mkts: sold $2.0M across 1 filing, first filed Nov 21, 2025, last Nov 21, 2025. Hilda Harris Piell, Sr MD & Chief HR Officer: sold $1.8M across 1 filing, first filed May 19, 2026, last May 19, 2026. Ken Vroman, Chief Transformation Officer: sold $1.6M across 1 filing, first filed Mar 12, 2026, last Mar 12, 2026. Bryan T. Durkin, Director: sold $1.3M across 1 filing, first filed Feb 23, 2026, last Feb 23, 2026. Jonathan L. Marcus, Sr MD General Counsel: sold $1.0M across 1 filing, first filed Mar 23, 2026, last Mar 23, 2026. William R. Shepard, Director: bought $666.9K across 4 filings, first filed Jan 2, 2026, last Sep 28, 2026. 4 others: sold $1.2M across 6 filings, first filed Nov 4, 2025, last Oct 22, 2026.
Largest mark · tap a row for others
Terrence A. Duffy · Chairman and CEO
Sale $10,447,866
35,000 shares at $298.51 avg
Filed May 18, 2026 · traded May 15
Close on filing date $305.12
Terrence A. Duffy · Chairman and CEO
Chairman and CEO
$21.3M soldDerek Sammann · Sr MD Gl Hd Commodities Mkts
Sr MD Gl Hd Commodities Mkts
$2.0M soldHilda Harris Piell · Sr MD & Chief HR Officer
Sr MD & Chief HR Officer
$1.8M soldKen Vroman · Chief Transformation Officer
Chief Transformation Officer
$1.6M soldBryan T. Durkin · Director
Director
$1.3M soldJonathan L. Marcus · Sr MD General Counsel
Sr MD General Counsel
$1.0M soldWilliam R. Shepard · Director
Director
$666.9K bought4 others
Combined, one mark per week
$1.2M soldHas CME Group Inc.'s CEO sold stock?
Yes. Terrence A. Duffy (CEO) sold 75,000 shares ($21.3M) between Dec 2025 and Sep 2026.
Open-market trades
18 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Terrence A. Duffy | Chairman and CEO | $21.3M | — | 3 | — | |
| Derek Sammann | Sr MD Gl Hd Commodities Mkts | $2.0M | — | 1 | — | |
| Hilda Harris Piell | Sr MD & Chief HR Officer | $1.8M | — | 1 | — | |
| Ken Vroman | Chief Transformation Officer | $1.6M | — | 1 | — | |
| Bryan T. Durkin | Director | $1.3M | — | 1 | — | |
| Jonathan L. Marcus | Sr MD General Counsel | $1.0M | — | 1 | 100% of sales | |
| William R. Shepard | Director | — | $666.9K | 4 | — | |
| Elizabeth A. Cook | Director | $460.1K | — | 2 | — | |
| Harold Eugene Ford JR. | Director | $263.5K | — | 1 | — | |
| Dennis Suskind | Director | $224.4K | — | 1 | — | |
| Martin J. Gepsman | Director | $212.8K | — | 2 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Martin J. Gepsman Director | Sale | 400 | $302.50 | $121.0K | 25,244 | |
traded | William R. Shepard Director | Purchase | 293 | $268.76 | $78.6K | 263,289 | |
traded | Elizabeth A. Cook Director | Sale | 500 | $280.11 | $140.1K | 17,916 | |
traded | Terrence A. Duffy Chairman and CEO | Sale | 15,000 | $274.44 | $4.1M | 41,258 | |
traded | William R. Shepard Director | Purchase | 339 | $230.57 | $78.2K | Multiple accounts | |
traded | Hilda Harris Piell Sr MD & Chief HR Officer | Sale | 5,753 | $304.63 | $1.8M | 27,702 | |
traded | Terrence A. Duffy Chairman and CEO | Sale | 35,000 | $298.51 | $10.4M | 55,630 | |
traded | William R. Shepard Director | Purchase | 1,470 | $297.38 | $437.1K | Multiple accounts | |
traded | Jonathan L. Marcus Sr MD General Counsel | SalePre-arranged (10b5-1) | 3,291 | $313.37 | $1.0M | 7,192 | |
traded | Ken Vroman Chief Transformation Officer | Sale | 5,160 | $309.00 | $1.6M | 14,910 | |
traded | Elizabeth A. Cook Director | Sale | 1,000 | $320.00 | $320.0K | 17,771 | |
traded | Bryan T. Durkin Director | Sale | 4,200 | $309.65 | $1.3M | 43,007 | |
traded | Martin J. Gepsman Director | Sale | 300 | $305.90 | $91.8K | 24,999 | |
traded | Dennis Suskind Director | Sale | 748 | $300.00 | $224.4K | 2,699 | |
traded | William R. Shepard Director | Purchase | 262 | $278.37 | $73.0K | Multiple accounts | |
traded | Terrence A. Duffy Chairman and CEO | Sale | 25,000 | $269.55 | $6.7M | 65,804 | |
traded | Derek Sammann Sr MD Gl Hd Commodities Mkts | Sale | 7,200 | $275.67 | $2.0M | Multiple accounts | |
traded | Harold Eugene Ford JR. Director | Sale | 1,000 | $263.53 | $263.5K | 1,091 |
GET /stocks/filings/vX/form-4?tickers=CME&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CME"
],
"issuer_cik": "0001156375",
"owner_cik": "0001212813",
"accession_number": "0001212813-26-000005",
"form_type": "4",
"filing_date": "2026-10-22",
"period_of_report": "2026-10-22",
"issuer_name": "CME GROUP INC.",
"issuer_trading_symbol": "CME",
"owner_name": "GEPSMAN MARTIN J",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock Class A",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-10-22",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 400,
"transaction_price_per_share": 302.5,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 25244,
"transaction_value": 121000,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"CME"
],
"issuer_cik": "0001156375",
"owner_cik": "0001212852",
"accession_number": "0001212852-26-000005",
"form_type": "4",
"filing_date": "2026-09-28",
"period_of_report": "2026-09-25",
"issuer_name": "CME GROUP INC.",
"issuer_trading_symbol": "CME",
"owner_name": "SHEPARD WILLIAM R",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock Class A",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-25",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 292.55,
"transaction_price_per_share": 268.76,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 263288.642,
"transaction_value": 78625.738,
"not_subject_to_section_16": false,
"direct_or_indirect": "I",
"nature_of_ownership": "by Trust",
"footnotes": [
{
"id": "F2",
"description": "Represents shares acquired pursuant to a broker-administered dividend reinvestment plan."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 110 records
- Tax withholding55 records
- Grants and awards45 records
- Gifts2 records
- Other8 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for CME every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Pre-arranged (10b5-1)
- The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
- Counted once
- When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.