MCANNALLY ROBERT S. (See Remarks) exercised options at ONE GAS, INC.

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

M · 2 exercises

MCANNALLY ROBERT S.

Filed: 2/20/2025ACC: 0000950170-25-024175

InsiderMCANNALLY ROBERT S.CIK 1636734

→

IssuerONE GAS, INC.CIK 1587732

DirectorOfficer· See Remarks

Since Feb 2026

+26.53K

Net shares

Net buyer

$495.7K

Total sold

Open market trades

0B · 0S

Total transactions

56.85K acquired · 30.32K disposed

Non-Derivative Transactions4

Common stock, par value $0.01

Direct

M · Option Exercise

+10.40K

Price / share

$71.53

Trade value

$744.12K

% of position

28.6%

2/18/2025

36.34K→46.74K

Common stock, par value $0.01

Direct

F · Tax Withholding

−4.64K

Price / share

$71.53

Trade value

$331.59K

% of position

9.9%

2/18/2025

46.74K→42.10K

Common stock, par value $0.01

Direct

M · Option Exercise

+5.20K

Price / share

$71.53

Trade value

$372.08K

% of position

12.4%

2/18/2025

42.10K→47.31K

Common stock, par value $0.01

Direct

F · Tax Withholding

−2.29K

Price / share

$71.53

Trade value

$164.09K

% of position

4.8%

2/18/2025

47.31K→45.01K

Total

Net shares

+8.68K

Net value

$620.52K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common stock, par value $0.01 Direct	2/18/2025	M · Option Exercise	+10.40K	$71.53	$744.12K	28.6%	36.34K	46.74K
Common stock, par value $0.01 Direct	2/18/2025	F · Tax Withholding	−4.64K	$71.53	$331.59K	9.9%	46.74K	42.10K
Common stock, par value $0.01 Direct	2/18/2025	M · Option Exercise	+5.20K	$71.53	$372.08K	12.4%	42.10K	47.31K
Common stock, par value $0.01 Direct	2/18/2025	F · Tax Withholding	−2.29K	$71.53	$164.09K	4.8%	47.31K	45.01K
Total			+8.68K		$620.52K

Derivative Transactions4

Performance Units 2022

Direct

M · Option Exercise

Converts to

Common stock, par value $0.01

18.71K shares

−18.71K

Strike price

Held after

0.00

Exercisable

—

2/18/2025

Restricted Units 2022

Direct

M · Option Exercise

Converts to

Common stock, par value $0.01

4.68K shares

−4.68K

Strike price

Held after

0.00

Exercisable

—

2/18/2025

Performance Units 2025

Direct

A · Award

Converts to

Common stock, par value $0.01

28.87K shares

+28.87K

Strike price

Held after

28.87K

Exercisable

—

2/18/2025

Restricted Units 2025

Direct

A · Award

Converts to

Common stock, par value $0.01

12.37K shares

+12.37K

Strike price

Held after

12.37K

Exercisable

—

2/18/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Performance Units 2022 Direct	Common stock, par value $0.0118.71K shares	2/18/2025	M · Option Exercise	−18.71K	—	0.00
Restricted Units 2022 Direct	Common stock, par value $0.014.68K shares	2/18/2025	M · Option Exercise	−4.68K	—	0.00
Performance Units 2025 Direct	Common stock, par value $0.0128.87K shares	2/18/2025	A · Award	+28.87K	—	28.87K
Restricted Units 2025 Direct	Common stock, par value $0.0112.37K shares	2/18/2025	A · Award	+12.37K	—	12.37K