Christopher A Isaacson
CIK 1538451 · EVP, COO · last filed 2026-02-23
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$15.57M
Companies
2
Total Filings
68
Lifetime Open-Market Net
-$15.56M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CBOE | EVP, COO | 50,198 | $310.23 | $15.57M | -$15.59M | 56 | 2026-02-23 |
| Bats Global Markets, Inc. (BATS) Delisted | EVP, Global CIO | 0 | — | — | $23.8K | 5 | 2017-03-02 |
Recent Filings · Page 4 of 7
68 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-02-23 | CBOE | Mixed | +5,386 | $639.9K | EDGAR |
| 2022-02-11 | CBOE | Mixed | +1,764 | -$93.3K | EDGAR |
| 2021-11-09 | CBOE | Mixed | −5,000 | -$264.9K | EDGAR |
| 2021-08-24 | CBOE | Sell (S) | −2,500 | -$322.3K | EDGAR |
| 2021-05-18 | CBOE | Mixed | −6,500 | -$285.0K | EDGAR |
| 2021-02-23 | CBOE | Mixed | +3,871 | $372.5K | EDGAR |
| 2021-02-12 | CBOE | Mixed | +2,004 | -$79.3K | EDGAR |
| 2020-03-03 | CBOE | Mixed | +4,037 | $460.2K | EDGAR |
| 2020-02-21 | CBOE | Mixed | +1,733 | $208.7K | EDGAR |
| 2020-02-12 | CBOE | Mixed | +2,931 | -$289.2K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.