What the executives and directors of Cboe Global Markets actually did with their own shares, decoded from three years of SEC Form 4 filings.
The tape: three years of insider trades
Every marker sits at the exact 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 gray strip is routine flow (vestings, tax withholding, gifts) that headlines love to miscount as selling.
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.
Skin in the game
Directly held shares as reported after each trade, indexed to 100 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.
Who holds what
| Insider | Role | Shares held | Buys 12 m | Sales 12 m |
|---|---|---|---|---|
| Isaacson Christopher A EVP, COO | COO | 49.2K | — | $1.2M |
| Tomczyk Fredric J | Director | 35.6K | — | — |
| Sexton John P EVP, GC AND CORP SEC | Officer | 28.1K | — | — |
| PALMORE RODERICK A | Director | 27.7K | — | — |
| RATTERMAN JOSEPH P | Director | 23.2K | — | — |
| Griebenow Jill EVP, CFO | CFO | 15K | — | — |
| Froetscher Janet P | Director | 13.8K | — | $438K |
| Fitzpatrick Edward J. | Director | 13.5K | — | $1.1M |
| Howson Dave EVP, GLOBAL PRESIDENT | Officer | 13.3K | — | — |
| Farrow William M III | Director | 12.7K | — | — |
| Goodman Jill R | Director | 12.4K | — | — |
| Parisi James E. | Director | 9,969 | — | — |
| Fong Ivan K | Director | 7,441 | — | — |
| McPeek Jennifer J | Director | 6,368 | — | — |
Open-market trade log
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| 2026-05-18 | Froetscher Janet P (Director) | Planned sale (10b5-1) | 1,223 | $358.09 | $438K |
| 2026-02-23 | Wilkinson Allen (Officer) | Discretionary sale | 248 | $292.79 | $73K |
| 2026-02-18 | Fitzpatrick Edward J. (Director) | Discretionary sale | 3,947 | $285.87 | $1.1M |
| 2026-02-18 | Matturri Alexander JR (Director) | Discretionary sale | 1,500 | $285.36 | $428K |
| 2025-09-02 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 5,000 | $236.66 | $1.2M |
| 2025-06-09 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 5,000 | $221.37 | $1.1M |
| 2025-05-23 | Clay Catherine R (Officer) | Planned sale (10b5-1) | 3,598 | $226.58 | $815K |
| 2025-03-13 | Goodman Jill R (Director) | Discretionary sale | 1,384 | $211.33 | $292K |
| 2025-03-12 | Goodman Jill R (Director) | Discretionary sale | 1,300 | $206.24 | $268K |
| 2025-02-24 | Wilkinson Allen (Officer) | Discretionary sale | 228 | $211.12 | $48K |
| 2025-02-20 | Howson Dave (Officer) | Planned sale (10b5-1) | 375 | $207.05 | $78K |
| 2025-02-20 | Howson Dave (Officer) | Planned sale (10b5-1) | 1,684 | $209.43 | $353K |
| 2025-02-20 | Howson Dave (Officer) | Planned sale (10b5-1) | 3,600 | $208.45 | $750K |
| 2025-02-20 | Inzirillo Adam (Officer) | Discretionary sale | 200 | $209.67 | $42K |
| 2025-02-12 | Howson Dave (Officer) | Planned sale (10b5-1) | 11K | $206.01 | $2.3M |
| 2025-02-10 | Clay Catherine R (Officer) | Discretionary sale | 3,000 | $211.85 | $636K |
| 2025-02-10 | Inzirillo Adam (Officer) | Discretionary sale | 80 | $211.66 | $17K |
| 2024-12-13 | Inzirillo Adam (Officer) | Discretionary sale | 25 | $200.43 | $5K |
| 2024-09-04 | Griebenow Jill (CFO) | Planned sale (10b5-1) | 1,622 | $213.33 | $346K |
| 2024-09-03 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 6,000 | $204.89 | $1.2M |
| 2024-08-26 | Wilkinson Allen (Officer) | Discretionary sale | 74 | $213.49 | $16K |
| 2024-08-22 | McPeek Jennifer J (Director) | Discretionary sale | 2,000 | $206.11 | $412K |
| 2024-08-07 | Clay Catherine R (Officer) | Discretionary sale | 131 | $203.15 | $27K |
| 2024-08-07 | Clay Catherine R (Officer) | Discretionary sale | 469 | $203.25 | $95K |
| 2024-08-02 | Howson Dave (Officer) | Planned sale (10b5-1) | 2 | $194.54 | $389 |
| 2024-08-02 | Howson Dave (Officer) | Planned sale (10b5-1) | 248 | $193.53 | $48K |
| 2024-08-02 | Howson Dave (Officer) | Planned sale (10b5-1) | 310 | $190.23 | $59K |
| 2024-08-02 | Howson Dave (Officer) | Planned sale (10b5-1) | 1,497 | $191.66 | $287K |
| 2024-08-02 | Howson Dave (Officer) | Planned sale (10b5-1) | 3,016 | $192.50 | $581K |
| 2024-07-26 | Howson Dave (Officer) | Planned sale (10b5-1) | 35 | $188.14 | $7K |
| 2024-07-25 | Howson Dave (Officer) | Planned sale (10b5-1) | 90 | $189.01 | $17K |
| 2024-07-25 | Howson Dave (Officer) | Planned sale (10b5-1) | 2,302 | $188.19 | $433K |
| 2024-07-22 | Howson Dave (Officer) | Planned sale (10b5-1) | 2,500 | $186.67 | $467K |
| 2024-06-21 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 6,000 | $175.00 | $1.1M |
| 2024-05-09 | Clay Catherine R (Officer) | Discretionary sale | 1,100 | $185.06 | $204K |
| 2024-03-11 | Sexton John P (Officer) | Discretionary sale | 6,968 | $185.00 | $1.3M |
| 2024-03-11 | Wilkinson Allen (Officer) | Discretionary sale | 275 | $184.94 | $51K |
| 2024-02-20 | Howson Dave (Officer) | Planned sale (10b5-1) | 5,322 | $186.96 | $995K |
| 2024-02-09 | Howson Dave (Officer) | Planned sale (10b5-1) | 8,314 | $183.88 | $1.5M |
| 2023-12-01 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 3,850 | $182.23 | $702K |
| 2023-11-24 | Clay Catherine R (Officer) | Discretionary sale | 1,300 | $179.62 | $234K |
| 2023-09-01 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 3,850 | $149.08 | $574K |
| 2023-08-17 | Howson Dave (Officer) | Planned sale (10b5-1) | 8,000 | $148.42 | $1.2M |
| 2023-08-08 | Goodman Jill R (Director) | Discretionary sale | 5,051 | $144.95 | $732K |
| 2023-07-10 | Tilly Edward T (CEO) | Planned sale (10b5-1) | 900 | $136.38 | $123K |
| 2023-07-10 | Tilly Edward T (CEO) | Planned sale (10b5-1) | 7,100 | $135.79 | $964K |
| 2023-06-13 | Tilly Edward T (CEO) | Planned sale (10b5-1) | 748 | $136.55 | $102K |
| 2023-06-13 | Tilly Edward T (CEO) | Planned sale (10b5-1) | 7,252 | $135.59 | $983K |
| 2023-06-09 | Sexton John P (Officer) | Discretionary sale | 2,999 | $138.00 | $414K |
| 2023-06-05 | Isaacson Christopher A (COO) | Planned sale (10b5-1) | 3,850 | $133.98 | $516K |
| 2023-05-24 | RATTERMAN JOSEPH P (Director) | Discretionary sale | 15K | $135.96 | $2M |
| 2023-02-21 | Schell Brian N (CFO) | Discretionary sale | 3,997 | $129.00 | $516K |
| 2023-02-17 | Schell Brian N (CFO) | Discretionary sale | 4,701 | $125.96 | $592K |
| 2022-12-05 | Griebenow Jill (Officer) | Discretionary sale | 400 | $128.00 | $51K |
| 2022-11-30 | Sexton John P (Officer) | Discretionary sale | 2,872 | $127.00 | $365K |
| 2022-11-07 | Tilly Edward T (CEO) | Discretionary sale | 10K | $126.77 | $1.3M |
| 2022-11-04 | Schell Brian N (CFO) | Discretionary sale | 1,829 | $130.00 | $238K |
| 2022-10-03 | Schell Brian N (CFO) | Discretionary sale | 7,303 | $117.11 | $855K |
| 2022-09-07 | Clay Catherine R (Officer) | Discretionary sale | 1,182 | $124.28 | $147K |
| 2022-05-17 | Fong Ivan K (Director) | Open-market buy | 650 | $109.27 | $71K |
“Since trade” compares with the latest insider-implied price, not a market quote; this site carries no market data by design.
Filing hygiene
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.