Isaacson Christopher A
Officer · CBOE
As of 2026-09-16, Isaacson Christopher A has 40 Form 4 transactions on record across 1 company — 20 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
- Direct $170K
- Indirect $0
| CBOE | direct | 627 sh | $170K |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2025-09-02 | CBOE | Sale | 5,000 @ $236.66 | $1.2M | −11.7% of holding | 37,580 | Form 4 |
| 2025-06-09 | CBOE | Sale | 5,000 @ $221.37 | $1.1M | −10.5% of holding | 42,580 | Form 4 |
38 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-02-19 | CBOE | Option exercise | 2,488 | 49,232 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 1,674 | 49,802 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 1,486 | 50,545 | Form 4 |
| 2026-02-19 | CBOE | Withheld for tax | 1,104 | 48,128 | Form 4 |
| 2026-02-19 | CBOE | Withheld for tax | 743 | 49,059 | Form 4 |
| 2026-02-19 | CBOE | Withheld for tax | 660 | 49,885 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 313 | 50,198 | Form 4 |
| 2026-02-19 | CBOE | Withheld for tax | 139 | 50,059 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 313 | 627 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 1,674 | 1,674 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 1,486 | 2,973 | Form 4 |
| 2026-02-19 | CBOE | Option exercise | 2,488 | 0 | Form 4 |
| 2026-02-12 | CBOE | Withheld for tax | 3,310 | 46,418 | Form 4 |
| 2026-02-12 | CBOE | Withheld for tax | 2,776 | 42,266 | Form 4 |
| 2026-02-12 | CBOE | Withheld for tax | 131 | 46,744 | Form 4 |
| 2026-02-12 | CBOE | Withheld for tax | 131 | 46,581 | Form 4 |
| 2026-02-12 | CBOE | Award / grant | 7,462 | 45,042 | Form 4 |
| 2026-02-12 | CBOE | Award / grant | 7,462 | 49,728 | Form 4 |
| 2026-02-12 | CBOE | Award / grant | 294 | 46,712 | Form 4 |
| 2026-02-12 | CBOE | Award / grant | 294 | 46,875 | Form 4 |
| 2025-07-15 | CBOE | Award / grant | 940 | 940 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 2,581 | 46,293 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 2,487 | 47,635 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 1,674 | 48,206 | Form 4 |
| 2025-02-19 | CBOE | Withheld for tax | 1,145 | 45,148 | Form 4 |
| 2025-02-19 | CBOE | Withheld for tax | 1,103 | 46,532 | Form 4 |
| 2025-02-19 | CBOE | Withheld for tax | 743 | 47,463 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 2,581 | 0 | Form 4 |
| 2025-02-19 | CBOE | Award / grant | 4,459 | 4,459 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 2,487 | 2,488 | Form 4 |
| 2025-02-19 | CBOE | Option exercise | 1,674 | 3,348 | Form 4 |
| 2025-02-12 | CBOE | Gift | 7,133 | 43,712 | Form 4 |
| 2025-02-10 | CBOE | Withheld for tax | 5,522 | 48,327 | Form 4 |
| 2025-02-10 | CBOE | Withheld for tax | 1,658 | 50,404 | Form 4 |
| 2025-02-10 | CBOE | Withheld for tax | 353 | 50,845 | Form 4 |
| 2025-02-10 | CBOE | Award / grant | 794 | 51,198 | Form 4 |
| 2025-02-10 | CBOE | Award / grant | 3,735 | 52,062 | Form 4 |
| 2025-02-10 | CBOE | Award / grant | 13,994 | 53,849 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.