Christopher A Isaacson
Insider
First SEC filing: Feb. 23, 2026 · Latest: Feb. 23, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs the latest weekly close (updated to the current quote in your browser when available), split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 19, 2026 | CBOE | M | 2,488 | $286.17 | $711,991 | 49,232 Direct | +5.32% | Acquired | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | F | 1,104 | $286.17 | $315,932 | 48,128 Direct | -2.24% | Disposed | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | M | 1,674 | $286.17 | $479,049 | 49,802 Direct | +3.48% | Acquired | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | F | 743 | $286.17 | $212,624 | 49,059 Direct | -1.49% | Disposed | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | M | 1,486 | $286.17 | $425,249 | 50,545 Direct | +3.03% | Acquired | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | F | 660 | $286.17 | $188,872 | 49,885 Direct | -1.31% | Disposed | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | M | 313 | $286.17 | $89,571 | 50,198 Direct | +0.63% | Acquired | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | F | 139 | $286.17 | $39,778 | 50,059 Direct | -0.28% | Disposed | 19.0% (price as of ) |
| Feb. 19, 2026 | CBOE | M | 2,488 | · | · | 0 Direct | -100.00% | Disposed | |
| Feb. 19, 2026 | CBOE | M | 1,674 | · | · | 1,674 Direct | -50.00% | Disposed | |
| Feb. 19, 2026 | CBOE | M | 1,486 | · | · | 2,973 Direct | -33.33% | Disposed | |
| Feb. 19, 2026 | CBOE | M | 313 | · | · | 627 Direct | -33.30% | Disposed | |
| Feb. 12, 2026 | CBOE | A | 7,462 | · | · | 45,042 Direct | +19.86% | Acquired | |
| Feb. 12, 2026 | CBOE | F | 2,776 | $270.60 | $751,186 | 42,266 Direct | -6.16% | Disposed | 25.8% (price as of ) |
| Feb. 12, 2026 | CBOE | A | 7,462 | · | · | 49,728 Direct | +17.65% | Acquired | |
| Feb. 12, 2026 | CBOE | F | 3,310 | $270.60 | $895,686 | 46,418 Direct | -6.66% | Disposed | 25.8% (price as of ) |
| Feb. 12, 2026 | CBOE | A | 294 | · | · | 46,712 Direct | +0.63% | Acquired | |
| Feb. 12, 2026 | CBOE | F | 131 | $270.60 | $35,449 | 46,581 Direct | -0.28% | Disposed | 25.8% (price as of ) |
| Feb. 12, 2026 | CBOE | A | 294 | · | · | 46,875 Direct | +0.63% | Acquired | |
| Feb. 12, 2026 | CBOE | F | 131 | $270.60 | $35,449 | 46,744 Direct | -0.28% | Disposed | 25.8% (price as of ) |
| Sept. 2, 2025 | CBOE | S 10b5-1 | 5,000 | $236.66 | $1,183,300 | 37,580 Direct | -11.74% | Disposed | 43.8% (price as of ) |
| July 15, 2025 | CBOE | A | 940 | · | · | 940 Direct | · | Acquired | |
| June 9, 2025 | CBOE | S 10b5-1 | 5,000 | $221.37 | $1,106,850 | 42,580 Direct | -10.51% | Disposed | 53.8% (price as of ) |
| Feb. 19, 2025 | CBOE | M | 2,581 | $210.25 | $542,655 | 46,293 Direct | +5.90% | Acquired | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | F | 1,145 | $210.25 | $240,736 | 45,148 Direct | -2.47% | Disposed | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | M | 2,487 | $210.25 | $522,892 | 47,635 Direct | +5.51% | Acquired | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | F | 1,103 | $210.25 | $231,906 | 46,532 Direct | -2.32% | Disposed | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | M | 1,674 | $210.25 | $351,958 | 48,206 Direct | +3.60% | Acquired | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | F | 743 | $210.25 | $156,216 | 47,463 Direct | -1.54% | Disposed | 61.9% (price as of ) |
| Feb. 19, 2025 | CBOE | M | 2,581 | · | · | 0 Direct | -100.00% | Disposed | |
| Feb. 19, 2025 | CBOE | M | 2,487 | · | · | 2,488 Direct | -49.99% | Disposed | |
| Feb. 19, 2025 | CBOE | M | 1,674 | · | · | 3,348 Direct | -33.33% | Disposed | |
| Feb. 19, 2025 | CBOE | A | 4,459 | · | · | 4,459 Direct | · | Acquired | |
| Feb. 12, 2025 | CBOE | G | 7,133 | · | · | 43,712 Direct | -14.03% | Disposed | |
| Feb. 10, 2025 | CBOE | A | 13,994 | · | · | 53,849 Direct | +35.11% | Acquired | |
| Feb. 10, 2025 | CBOE | F | 5,522 | $209.71 | $1,158,019 | 48,327 Direct | -10.25% | Disposed | 62.3% (price as of ) |
| Feb. 10, 2025 | CBOE | A | 3,735 | · | · | 52,062 Direct | +7.73% | Acquired | |
| Feb. 10, 2025 | CBOE | F | 1,658 | $209.71 | $347,699 | 50,404 Direct | -3.18% | Disposed | 62.3% (price as of ) |
| Feb. 10, 2025 | CBOE | A | 794 | · | · | 51,198 Direct | +1.58% | Acquired | |
| Feb. 10, 2025 | CBOE | F | 353 | $209.71 | $74,028 | 50,845 Direct | -0.69% | Disposed | 62.3% (price as of ) |
| Sept. 3, 2024 | CBOE | S 10b5-1 | 6,000 | $204.89 | $1,229,340 | 39,855 Direct | -13.08% | Disposed | 66.1% (price as of ) |
| Aug. 5, 2024 | CBOE | G | 6,000 | · | · | 45,855 Direct | -11.57% | Disposed | |
| June 21, 2024 | CBOE | S 10b5-1 | 6,000 | $175.00 | $1,050,000 | 51,855 Direct | -10.37% | Disposed | 94.5% (price as of ) |
| March 11, 2024 | CBOE | G | 5,410 | · | · | 57,690 Direct | -8.57% | Disposed | |
| Feb. 19, 2024 | CBOE | M | 3,552 | $186.69 | $663,123 | 61,856 Direct | +6.09% | Acquired | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | F | 1,576 | $186.69 | $294,223 | 60,280 Direct | -2.55% | Disposed | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | M | 2,581 | $186.69 | $481,847 | 62,861 Direct | +4.28% | Acquired | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | F | 1,145 | $186.69 | $213,760 | 61,716 Direct | -1.82% | Disposed | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | M | 2,487 | $186.69 | $464,298 | 64,203 Direct | +4.03% | Acquired | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | F | 1,103 | $186.69 | $205,919 | 63,100 Direct | -1.72% | Disposed | 82.3% (price as of ) |
| Feb. 19, 2024 | CBOE | M | 3,552 | · | · | 0 Direct | -100.00% | Disposed | |
| Feb. 19, 2024 | CBOE | M | 2,581 | · | · | 2,581 Direct | -50.00% | Disposed | |
| Feb. 19, 2024 | CBOE | M | 2,487 | · | · | 4,975 Direct | -33.33% | Disposed | |
| Feb. 19, 2024 | CBOE | A | 5,022 | · | · | 5,022 Direct | · | Acquired | |
| Feb. 19, 2024 | CBOE | A | 1,340 | · | · | 1,340 Direct | · | Acquired | |
| Feb. 7, 2024 | CBOE | A | 22,324 | · | · | 67,426 Direct | +49.50% | Acquired | |
| Feb. 7, 2024 | CBOE | F | 9,122 | $184.46 | $1,682,644 | 58,304 Direct | -13.53% | Disposed | 84.5% (price as of ) |
| Dec. 1, 2023 | CBOE | S 10b5-1 | 3,850 | $182.23 | $701,586 | 45,102 Direct | -7.86% | Disposed | 86.8% (price as of ) |
| Nov. 8, 2023 | CBOE | G | 5,746 | · | · | 48,952 Direct | -10.50% | Disposed | |
| Sept. 1, 2023 | CBOE | S 10b5-1 | 3,850 | $149.08 | $573,958 | 54,599 Direct | -6.59% | Disposed | 128.3% (price as of ) |
| June 13, 2023 | CBOE | G | 2,900 | · | · | 58,449 Direct | -4.73% | Disposed | |
| June 5, 2023 | CBOE | S 10b5-1 | 3,850 | $133.98 | $515,823 | 61,349 Direct | -5.90% | Disposed | 154.1% (price as of ) |
| Feb. 19, 2023 | CBOE | M | 2,366 | $129.09 | $305,427 | 62,526 Direct | +3.93% | Acquired | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | F | 1,050 | $129.09 | $135,544 | 61,476 Direct | -1.68% | Disposed | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | M | 3,551 | $129.09 | $458,399 | 65,027 Direct | +5.78% | Acquired | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | F | 1,575 | $129.09 | $203,317 | 63,452 Direct | -2.42% | Disposed | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | M | 2,580 | $129.09 | $333,052 | 66,032 Direct | +4.07% | Acquired | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | F | 1,145 | $129.09 | $147,808 | 64,887 Direct | -1.73% | Disposed | 163.7% (price as of ) |
| Feb. 19, 2023 | CBOE | M | 2,366 | · | · | 0 Direct | -100.00% | Disposed | |
| Feb. 19, 2023 | CBOE | M | 3,551 | · | · | 3,552 Direct | -49.99% | Disposed | |
| Feb. 19, 2023 | CBOE | M | 2,580 | · | · | 5,162 Direct | -33.32% | Disposed | |
| Feb. 19, 2023 | CBOE | A | 7,462 | · | · | 7,462 Direct | · | Acquired | |
| Feb. 8, 2023 | CBOE | A | 10,438 | · | · | 63,651 Direct | +19.62% | Acquired | |
| Feb. 8, 2023 | CBOE | F | 3,491 | $126.88 | $442,938 | 60,160 Direct | -5.48% | Disposed | 168.3% (price as of ) |
| Nov. 21, 2022 | CBOE | G | 2,000 | · | · | 53,213 Direct | -3.62% | Disposed | |
| Sept. 8, 2022 | CBOE | G | 3,370 | · | · | 55,213 Direct | -5.75% | Disposed | |
| Feb. 19, 2022 | CBOE | M | 2,193 | $118.81 | $260,550 | 55,390 Direct | +4.12% | Acquired | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | F | 644 | $118.81 | $76,514 | 54,746 Direct | -1.16% | Disposed | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | M | 2,365 | $118.81 | $280,986 | 57,111 Direct | +4.32% | Acquired | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | F | 1,036 | $118.81 | $123,087 | 56,075 Direct | -1.81% | Disposed | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | M | 3,551 | $118.81 | $421,894 | 59,626 Direct | +6.33% | Acquired | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | F | 1,043 | $118.81 | $123,919 | 58,583 Direct | -1.75% | Disposed | 186.5% (price as of ) |
| Feb. 19, 2022 | CBOE | M | 2,193 | · | · | 0 Direct | -100.00% | Disposed | |
| Feb. 19, 2022 | CBOE | M | 2,365 | · | · | 2,366 Direct | -49.99% | Disposed | |
| Feb. 19, 2022 | CBOE | M | 3,551 | · | · | 7,103 Direct | -33.33% | Disposed | |
| Feb. 19, 2022 | CBOE | A | 7,742 | · | · | 7,742 Direct | · | Acquired | |
| Feb. 9, 2022 | CBOE | A | 2,533 | · | · | 53,966 Direct | +4.92% | Acquired | |
| Feb. 9, 2022 | CBOE | F | 769 | $121.30 | $93,280 | 53,197 Direct | -1.42% | Disposed | 180.6% (price as of ) |
| Nov. 5, 2021 | CBOE | S 10b5-1 | 1,385 | $132.24 | $183,152 | 52,048 Direct | -2.59% | Disposed | 157.4% (price as of ) |
| Nov. 5, 2021 | CBOE | S 10b5-1 | 615 | $132.94 | $81,758 | 51,433 Direct | -1.18% | Disposed | 156.1% (price as of ) |
| Nov. 4, 2021 | CBOE | G | 3,000 | · | · | 53,433 Direct | -5.32% | Disposed | |
| Aug. 20, 2021 | CBOE | S 10b5-1 | 800 | $128.26 | $102,608 | 58,133 Direct | -1.36% | Disposed | 165.4% (price as of ) |
| Aug. 20, 2021 | CBOE | S 10b5-1 | 1,600 | $129.21 | $206,736 | 56,533 Direct | -2.75% | Disposed | 163.5% (price as of ) |
| Aug. 20, 2021 | CBOE | S 10b5-1 | 100 | $129.92 | $12,992 | 56,433 Direct | -0.18% | Disposed | 162.0% (price as of ) |
| May 14, 2021 | CBOE | S 10b5-1 | 1,577 | $113.58 | $179,116 | 59,856 Direct | -2.57% | Disposed | 199.7% (price as of ) |
| May 14, 2021 | CBOE | S 10b5-1 | 623 | $114.45 | $71,302 | 59,233 Direct | -1.04% | Disposed | 197.4% (price as of ) |
| May 14, 2021 | CBOE | S 10b5-1 | 300 | $115.24 | $34,572 | 58,933 Direct | -0.51% | Disposed | 195.4% (price as of ) |
| May 5, 2021 | CBOE | G | 4,000 | · | · | 61,433 Direct | -6.11% | Disposed | |
| Feb. 19, 2021 | CBOE | M | 923 | $96.22 | $88,811 | 62,485 Direct | +1.50% | Acquired | 253.8% (price as of ) |
| Feb. 19, 2021 | CBOE | F | 271 | $96.22 | $26,076 | 62,214 Direct | -0.43% | Disposed | 253.8% (price as of ) |
Loaded 100 of 190 rows
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 19, 2026 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,488 | Disposed |
| Feb. 19, 2026 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,674 | Disposed |
| Feb. 19, 2026 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,486 | Disposed |
| Feb. 19, 2026 | CBOE | Restricted Stock Units | Common Stock | · | · | 313 | Disposed |
| July 15, 2025 | CBOE | Restricted Stock Units | Common Stock | · | · | 940 | Acquired |
| Feb. 19, 2025 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,581 | Disposed |
| Feb. 19, 2025 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,487 | Disposed |
| Feb. 19, 2025 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,674 | Disposed |
| Feb. 19, 2025 | CBOE | Restricted Stock Units | Common Stock | · | · | 4,459 | Acquired |
| Feb. 19, 2024 | CBOE | Restricted Stock Units | Common Stock | · | · | 3,552 | Disposed |
| Feb. 19, 2024 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,581 | Disposed |
| Feb. 19, 2024 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,487 | Disposed |
| Feb. 19, 2024 | CBOE | Restricted Stock Units | Common Stock | · | · | 5,022 | Acquired |
| Feb. 19, 2024 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,340 | Acquired |
| Feb. 19, 2023 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,366 | Disposed |
| Feb. 19, 2023 | CBOE | Restricted Stock Units | Common Stock | · | · | 3,551 | Disposed |
| Feb. 19, 2023 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,580 | Disposed |
| Feb. 19, 2023 | CBOE | Restricted Stock Units | Common Stock | · | · | 7,462 | Acquired |
| Feb. 19, 2022 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,193 | Disposed |
| Feb. 19, 2022 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,365 | Disposed |
| Feb. 19, 2022 | CBOE | Restricted Stock Units | Common Stock | · | · | 3,551 | Disposed |
| Feb. 19, 2022 | CBOE | Restricted Stock Units | Common Stock | · | · | 7,742 | Acquired |
| Feb. 19, 2021 | CBOE | Restricted Stock Units | Common Stock | · | · | 923 | Disposed |
| Feb. 19, 2021 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,193 | Disposed |
| Feb. 19, 2021 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,365 | Disposed |
| Feb. 19, 2021 | CBOE | Restricted Stock Units | Common Stock | · | · | 10,654 | Acquired |
| Feb. 28, 2020 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,037 | Disposed |
| Feb. 28, 2020 | CBOE | Restricted Stock Units | Common Stock | · | · | 6,219 | Disposed |
| Feb. 19, 2020 | CBOE | Restricted Stock Units | Common Stock | · | · | 923 | Disposed |
| Feb. 19, 2020 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,193 | Disposed |
| Feb. 19, 2020 | CBOE | Restricted Stock Units | Common Stock | · | · | 7,096 | Acquired |
| Nov. 15, 2019 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 10,000 | Disposed |
| Aug. 15, 2019 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 10,000 | Disposed |
| May 29, 2019 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 10,000 | Disposed |
| Feb. 28, 2019 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,037 | Disposed |
| Feb. 28, 2019 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,037 | Disposed |
| Feb. 19, 2019 | CBOE | Restricted Stock Units | Common Stock | · | · | 922 | Disposed |
| Feb. 19, 2019 | CBOE | Restricted Stock Units | Common Stock | · | · | 6,579 | Acquired |
| Nov. 27, 2018 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 8,719 | Disposed |
| Aug. 30, 2018 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 8,720 | Disposed |
| June 6, 2018 | CBOE | Stock Option | Common Stock | $22.08 | Jan. 31, 2020 | 8,720 | Disposed |
| Feb. 28, 2018 | CBOE | Restricted Stock Units | Common Stock | · | · | 1,036 | Disposed |
| Feb. 19, 2018 | CBOE | Restricted Stock Units | Common Stock | · | · | 2,768 | Acquired |
| Dec. 1, 2017 | CBOE | Stock Option | Common Stock | $12.63 | April 30, 2019 | 7,019 | Disposed |
| Sept. 1, 2017 | CBOE | Stock Option | Common Stock | $12.63 | April 30, 2019 | 7,020 | Disposed |
| Feb. 28, 2017 | CBOE | Restricted Stock Units | Common Stock | · | · | 6,219 | Acquired |
| Feb. 28, 2017 | CBOE | Restricted Stock Units | Common Stock | · | · | 3,110 | Acquired |
| Feb. 28, 2017 | CBOE | Stock Option [F6] | Common Stock | $12.63 | April 30, 2019 | 14,039 | Acquired |
| Feb. 28, 2017 | CBOE | Stock Option [F6] | Common Stock | $22.08 | Jan. 31, 2020 | 56,159 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Holdings reported on Form 4 1 reported holding
Positions listed on each Form 4 without a transaction in that filing (Table I and II holdings), newest filing first.
| Date | Ticker | Security | Shares | Exercise price | Expiration | Ownership |
|---|---|---|---|---|---|---|
| Feb. 21, 2018 | CBOE | Common Stock | 76,924 | · | · | Direct |