Transactions
2
Insider / CME GROUP INC.
Durkin Bryan T
Director at CME GROUP INC.
- Company
- CME GROUP INC.
- Ticker
- CME
- First filing on record
- February 23, 2026
- Latest trade on record
- June 25, 2026
- SEC filings
- EDGAR ↗
Durkin Bryan T, Director at CME GROUP INC., has disclosed 2 transactions in CME since February 23, 2026: 0 purchases (0 open-market buys) and 1 sale, worth about $1.4M at the reported prices. The latest was filed June 29, 2026, 4 days after the trade.
Open-market buys
0
Sales
1
Avg. disclosure lag
2.0d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months Durkin Bryan T made no purchases and 1 sale worth $1.3M, plus 1 other transaction. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
Durkin Bryan T has traded 1 stock on record; the largest by dollars is CME.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 2 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| A | Grant or award | 1 | 645 | $145K |
| S | Open-market sale | 1 | 4,200 | $1.3M |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 2 | 0 | 1 · $1.3M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| CME | Other A | June 25, 2026 | June 29, 2026 | 4d | 645 | $225 | $145K | Form 4 ↗ | ||
| CME | Sell S | February 23, 2026 | February 23, 2026 | 0d | 4,200 | $310 | $1.3M | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| June 29, 2026 | Form 4 | 0001341363-26-000003 | 1 | published | EDGAR ↗ |
| February 23, 2026 | Form 4 | 0001628280-26-010703 | 1 | published | EDGAR ↗ |
Other insiders at CME GROUP INC.
- Sammann Derek Sr MD Gl Hd Commodities Mkts 13 rows
- SHEPARD WILLIAM R Director 11 rows
- DUFFY TERRENCE A Chairman and CEO 10 rows
- Fitzpatrick Lynne President and CFO 8 rows
- McCourt Timothy Francis Sr MD Global Head Equity & FX 8 rows
- Sprague Suzanne COO & Global Head of Clearing 8 rows
- Tobin Jack J MD Chief Accounting Officer 8 rows
- Vroman Ken Chief Transformation Officer 8 rows
- Cutinho Sunil Chief Information Officer 7 rows
- Winkler Julie Sr MD Chief Commercial Officer 7 rows
Everyone on file, with contracts and lobbying under the company's name: CME GROUP INC..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 2 | 2 | February 23, 2026 | June 29, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.