Brian F. Brumfield - 14 Feb 2026 Form 4 Insider Report for ONE Gas, Inc. (OGS)

Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
19 Feb 2026, 16:15:17 UTC
Prior SEC filing
20 Feb 2025
Next SEC filing
25 Feb 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Brian K. Shore, Attorney-in-Fact for Brian F. Brumfield

Key filing fact

Brian F. Brumfield filed Form 4 for ONE Gas, Inc. (OGS) on 19 Feb 2026.

Key facts

  • This page summarizes Brian F. Brumfield's Form 4 filing for ONE Gas, Inc. (OGS).
  • 8 reported transactions and 4 derivative rows are listed below.
  • Accepted by SEC: 19 Feb 2026, 16:15.

Change

  • Previous filing in this sequence was filed on 20 Feb 2025.
  • Current net transaction value: +$96,548.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001951536 Primary reporting owner

Brumfield Brian F.

Relationship
Vice President, Chief Accounting Officer and Controller
Address
15 E. 5TH STREET, TULSA
Signature
/s/ Brian K. Shore, Attorney-in-Fact for Brian F. Brumfield
Signature date
19 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

OGS transaction

Common stock, par value $0.01

Options Exercise

Transaction value
$110,454
Shares
+1,284
Change %
+63%
Price
$86.04
Shares after
3,309
Date
16 Feb 2026
Ownership
Direct
Footnotes
F1
OGS transaction

Common stock, par value $0.01

Tax liability

Transaction value
$37,720
Shares
-438
Change %
-13%
Price
$86.04
Shares after
2,870
Date
16 Feb 2026
Ownership
Direct
Footnotes
F1
OGS transaction

Common stock, par value $0.01

Options Exercise

Transaction value
$48,413
Shares
+563
Change %
+20%
Price
$86.04
Shares after
3,433
Date
14 Feb 2026
Ownership
Direct
Footnotes
F2
OGS transaction

Common stock, par value $0.01

Tax liability

Transaction value
$16,082
Shares
-187
Change %
-5.4%
Price
$86.04
Shares after
3,246
Date
14 Feb 2026
Ownership
Direct
Footnotes
F2
OGS holding

Common stock, par value $0.01

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,434
Date
14 Feb 2026
Ownership
by 401(k) Plan

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

OGS transaction Derivative

Performance Units 2023

Options Exercise

Transaction value
$130,179
Shares
-1,513
Change %
-100%
Price
$86.04
Shares after
0
Date
16 Feb 2026
Ownership
Direct
Underlying class
Common stock, par value $0.01
Underlying amount
1,513
Exercise price
Footnotes
F1
OGS transaction Derivative

Restricted Units 2023

Options Exercise

Transaction value
$43,364
Shares
-504
Change %
-100%
Price
$86.04
Shares after
0
Date
14 Feb 2026
Ownership
Direct
Underlying class
Common stock, par value $0.01
Underlying amount
504
Exercise price
Footnotes
F2
OGS transaction Derivative

Performance Units 2026

Award

Transaction value
$82,512
Shares
+959
Change %
Price
$86.04
Shares after
959
Date
16 Feb 2026
Ownership
Direct
Underlying class
Common stock, par value $0.01
Underlying amount
959
Exercise price
Footnotes
F3
OGS transaction Derivative

Restricted Units 2026

Award

Transaction value
$82,512
Shares
+959
Change %
Price
$86.04
Shares after
959
Date
16 Feb 2026
Ownership
Direct
Underlying class
Common stock, par value $0.01
Underlying amount
959
Exercise price
Footnotes
F4
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award, including dividend equivalents, vested on February 14, 2026, in an amount equal to 76% of the performance units awarded based upon Issuer's total shareholder return compared to the total shareholder return of a selected peer group, was certified by the Executive Compensation Committee of the Board of Directors on February 16, 2026, and issued pursuant to the terms of the grant agreement.

Footnote F2

Restricted units awarded under Issuer's Amended and Restated Equity Compensation Plan (2018). During the 3-year vesting period, the award was credited with dividend equivalents that were paid out in shares of common stock at the time the underlying units vested and were issued. The shares were issued pursuant to the terms of the grant agreement.

Footnote F3

Performance units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award will vest on February 17, 2029, for a percentage (0% to 200%) of the performance units awarded based upon the Issuer's total shareholder return compared to total stockholder return of a selected peer group over the performance period from January 1, 2026, through December 31, 2029, in accordance with the terms of the Performance Unit Award Agreement.

Footnote F4

Restricted units awarded under the Issuer's Amended and Restated Equity Compensation Plan (2018). The award vests on February 17, 2029, in accordance with the terms of the Restricted Unit Award Agreement.

SEC remarks

Vice President, Chief Accounting Officer and Controller

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