ISAACSON CHRISTOPHER A (Executive VP, CIO) exercised options at CBOE GLOBAL MARKETS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 4 exercises

ISAACSON CHRISTOPHER A

Filed: 2/23/2026ACC: 0001538451-26-000003

InsiderISAACSON CHRISTOPHER ACIK 1538451

→

IssuerCBOE GLOBAL MARKETS, INC.CIK 1374310

Officer· Executive VP, CIO

Since Aug 2018

-2.65K

Net shares

Net seller

$757.2K

Total sold

Open market trades

0B · 0S

Total transactions

5.96K acquired · 8.61K disposed

Non-Derivative Transactions8

Common Stock

Direct

M · Option Exercise

+2.49K

Price / share

$286.17

Trade value

$711.99K

% of position

5.3%

2/19/2026

46.74K→49.23K

Common Stock

Direct

F · Tax Withholding

−1.10K

Price / share

$286.17

Trade value

$315.93K

% of position

2.2%

2/19/2026

49.23K→48.13K

Common Stock

Direct

M · Option Exercise

+1.67K

Price / share

$286.17

Trade value

$479.05K

% of position

3.5%

2/19/2026

48.13K→49.80K

Common Stock

Direct

F · Tax Withholding

−743.00

Price / share

$286.17

Trade value

$212.62K

% of position

1.5%

2/19/2026

49.80K→49.06K

Common Stock

Direct

M · Option Exercise

+1.49K

Price / share

$286.17

Trade value

$425.25K

% of position

3.0%

2/19/2026

49.06K→50.55K

Common Stock

Direct

F · Tax Withholding

−660.00

Price / share

$286.17

Trade value

$188.87K

% of position

1.3%

2/19/2026

50.55K→49.88K

Common Stock

Direct

M · Option Exercise

+313.00

Price / share

$286.17

Trade value

$89.57K

% of position

0.6%

2/19/2026

49.88K→50.20K

Common Stock

Direct

F · Tax Withholding

−139.00

Price / share

$286.17

Trade value

$39.78K

% of position

0.3%

2/19/2026

50.20K→50.06K

Total

Net shares

+3.31K

Net value

$948.65K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/19/2026	M · Option Exercise	+2.49K	$286.17	$711.99K	5.3%	46.74K	49.23K
Common Stock Direct	2/19/2026	F · Tax Withholding	−1.10K	$286.17	$315.93K	2.2%	49.23K	48.13K
Common Stock Direct	2/19/2026	M · Option Exercise	+1.67K	$286.17	$479.05K	3.5%	48.13K	49.80K
Common Stock Direct	2/19/2026	F · Tax Withholding	−743.00	$286.17	$212.62K	1.5%	49.80K	49.06K
Common Stock Direct	2/19/2026	M · Option Exercise	+1.49K	$286.17	$425.25K	3.0%	49.06K	50.55K
Common Stock Direct	2/19/2026	F · Tax Withholding	−660.00	$286.17	$188.87K	1.3%	50.55K	49.88K
Common Stock Direct	2/19/2026	M · Option Exercise	+313.00	$286.17	$89.57K	0.6%	49.88K	50.20K
Common Stock Direct	2/19/2026	F · Tax Withholding	−139.00	$286.17	$39.78K	0.3%	50.20K	50.06K
Total			+3.31K		$948.65K

Derivative Transactions4

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.49K shares

−2.49K

Strike price

Held after

0.00

Exercisable

—

2/19/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.67K shares

−1.67K

Strike price

Held after

1.67K

Exercisable

—

2/19/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.49K shares

−1.49K

Strike price

Held after

2.97K

Exercisable

—

2/19/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

313.00 shares

−313.00

Strike price

Held after

627.00

Exercisable

—

2/19/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock2.49K shares	2/19/2026	M · Option Exercise	−2.49K	—	0.00
Restricted Stock Units Direct	Common Stock1.67K shares	2/19/2026	M · Option Exercise	−1.67K	—	1.67K
Restricted Stock Units Direct	Common Stock1.49K shares	2/19/2026	M · Option Exercise	−1.49K	—	2.97K
Restricted Stock Units Direct	Common Stock313.00 shares	2/19/2026	M · Option Exercise	−313.00	—	627.00