Comparable stake leader
BlackRock, Inc.
SEC ownership of ONE Gas, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001587732.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
21 May 2026
- Public ticker
- OGS on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
21 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001587732
- Issuer location
- Tulsa, OK
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of ONE Gas, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
21 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 13%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 13%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
13%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.8%
AMERICAN CENTURY INVESTMENT MANAG...
5.4%
VANGUARD CAPITAL MANAGEMENT LLC
5.2%
STATE STREET CORP
5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
13%
from 13D/G
|
$785,081,496
9,115,076 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.8%
|
$311,190,102
3,613,028 shares
|
$0 | 31 Mar 2026 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
5.4%
|
$290,722,599
3,375,393 shares
|
-$51,421,246 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.2%
|
$280,731,519
3,259,393 shares
|
$0 | 31 Mar 2026 |
| STATE STREET CORP |
13F
13D/G
Company · STATE STREET CORPORATION
|
5%
from 13D/G
|
$261,566,905
3,036,885 shares
|
— | 31 Mar 2026 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
Company
|
4.2%
|
$224,397,245
2,605,332 shares
|
$0 | 31 Mar 2026 |
| Michael G. Hutchinson |
3/4/5
Director
|
0.03%
|
$1,406,589
16,331 shares
|
-$236,574 | 21 May 2026 |
| Tracy E. Hart |
3/4/5
Director
|
0.02%
|
$973,441
11,302 shares
|
— | 21 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$396,403.
Buys
$0
Insiders: 0
Sells
$396,403
Insiders: 3
Net
-$396,403
Shares: -4,850
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 4,850
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 1,850 | $0 | $159,829 | -$159,829 |
| 6-9 | 0 | 3,000 | $0 | $236,574 | -$236,574 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 22 reporting-owner rows connected to ONE Gas, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
22
Largest Forms 3/4/5 holder
John W. Gibson
Net 12M change
-$396,403
Latest report
09 Jun 2026
Recent insider transactions for ONE Gas, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Joseph L. McCormick | OGS | Common stock, par value $0.01 | Tax liability | -1.89% | -1,459 | 75,622 | 09 Jun 2026 | Direct | ||
| Joseph L. McCormick | OGS | Common stock, par value $0.01 | Options Exercise | 4.51% | 3,328 | 77,137 | 09 Jun 2026 | Direct | ||
| Joseph L. McCormick | OGS | Restricted Units 2025 | Options Exercise | -100% | -3,132 | 0 | 09 Jun 2026 | Direct | ||
| Joseph L. McCormick | OGS | Restricted Units 2024 | Options Exercise | -100% | -1,926 | 0 | 09 Jun 2026 | Direct | ||
| Joseph L. McCormick | OGS | Restricted Units 2023 | Options Exercise | -100% | -1,223 | 0 | 09 Jun 2026 | Direct | ||
| John W. Gibson | OGS | Common stock, par value $0.01 | Options Exercise | 7.33% | 19,976 | 292,670 | 03 Jun 2026 | Direct | ||
| John W. Gibson | OGS | Phantom Stock | Options Exercise | -76.9% | -19,976 | 6,010 | 03 Jun 2026 | Direct | ||
| Pattye L. Moore | OGS | Common stock, par value $0.01 | Options Exercise | 1252.9% | 5,638 | 6,088 | 03 Jun 2026 | Direct | ||
| Pattye L. Moore | OGS | Phantom Stock | Options Exercise | -10% | -5,638 | 50,714 | 03 Jun 2026 | Direct | ||
| Sanjay D. Meshri | OGS | Common stock, par value $0.01 | Award | 47.3% | 1,700 | 5,293 | 21 May 2026 | Direct | ||
| Pattye L. Moore | OGS | Deferred Stock | Award | 3.14% | 1,700 | 55,877 | 21 May 2026 | Direct | ||
| Deborah Hersman | OGS | Deferred Stock | Award | 29.1% | 1,700 | 7,533 | 21 May 2026 | Direct | ||
| Eduardo A. Rodriguez | OGS | Common stock, par value $0.01 | Award | 9.54% | 1,275 | 14,637 | 21 May 2026 | Direct | ||
| Eduardo A. Rodriguez | OGS | Deferred Stock | Award | 8.76% | 425 | 5,276 | 21 May 2026 | Direct | ||
| Michael G. Hutchinson | OGS | Common stock, par value $0.01 | Award | 11.6% | 1,700 | 16,331 | 21 May 2026 | Direct | ||
| Yves C. Siegel | OGS | Deferred Stock | Award | 45.4% | 1,700 | 5,447 | 21 May 2026 | Direct | ||
| Tracy E. Hart | OGS | Common stock, par value $0.01 | Award | 17.7% | 1,700 | 11,302 | 21 May 2026 | Direct | ||
| Eduardo A. Rodriguez | OGS | Common stock, par value $0.01 | Sale | -5.98% | $73,389 | $86.34 | -850 | 13,362 | 06 Mar 2026 | Direct |
| Brian F. Brumfield | OGS | Common stock, par value $0.01 | Sale | -30.8% | $86,440 | $86.44 | -1,000 | 2,246 | 24 Feb 2026 | Direct |
| William K. Shortridge | OGS | Common stock, par value $0.01 | Tax liability | -6.73% | -816 | 11,300 | 16 Feb 2026 | Direct | ||
| William K. Shortridge | OGS | Common stock, par value $0.01 | Options Exercise | 15.9% | 1,660 | 12,116 | 16 Feb 2026 | Direct | ||
| William K. Shortridge | OGS | Restricted Units 2026 | Award | 1,395 | 1,395 | 16 Feb 2026 | Direct | |||
| William K. Shortridge | OGS | Performance Units 2026 | Award | 2,092 | 2,092 | 16 Feb 2026 | Direct | |||
| William K. Shortridge | OGS | Performance Units 2023 | Options Exercise | -100% | -1,956 | 0 | 16 Feb 2026 | Direct | ||
| Joseph L. McCormick | OGS | Common stock, par value $0.01 | Tax liability | -2.1% | -1,608 | 74,907 | 16 Feb 2026 | Direct | ||
| Joseph L. McCormick | OGS | Common stock, par value $0.01 | Options Exercise | 5.23% | 3,804 | 76,515 | 16 Feb 2026 | Direct | ||
| Joseph L. McCormick | OGS | Performance Units 2023 | Options Exercise | -100% | -4,891 | 0 | 16 Feb 2026 | Direct | ||
| Christopher P. Sighinolfi | OGS | Common stock, par value $0.01 | Tax liability | -1.47% | -61.53 | 4,125 | 16 Feb 2026 | Direct | ||
| Christopher P. Sighinolfi | OGS | Common stock, par value $0.01 | Options Exercise | 48.2% | 1,362 | 4,186 | 16 Feb 2026 | Direct | ||
| Christopher P. Sighinolfi | OGS | Restricted Units 2026 | Award | 3,719 | 3,719 | 16 Feb 2026 | Direct | |||
| Christopher P. Sighinolfi | OGS | Performance Units 2026 | Award | 5,579 | 5,579 | 16 Feb 2026 | Direct | |||
| Christopher P. Sighinolfi | OGS | Performance Units 2023 | Options Exercise | -100% | -1,605 | 0 | 16 Feb 2026 | Direct | ||
| Angela E. Kouplen | OGS | Common stock, par value $0.01 | Tax liability | -41% | -1,000 | 1,439 | 16 Feb 2026 | Direct | ||
| Angela E. Kouplen | OGS | Common stock, par value $0.01 | Options Exercise | 851.6% | 2,183 | 2,439 | 16 Feb 2026 | Direct | ||
| Angela E. Kouplen | OGS | Restricted Units 2026 | Award | 1,534 | 1,534 | 16 Feb 2026 | Direct | |||
| Angela E. Kouplen | OGS | Performance Units 2026 | Award | 2,301 | 2,301 | 16 Feb 2026 | Direct | |||
| Angela E. Kouplen | OGS | Performance Units 2023 | Options Exercise | -100% | -2,639 | 0 | 16 Feb 2026 | Direct | ||
| Brian F. Brumfield | OGS | Common stock, par value $0.01 | Tax liability | -13.2% | -438 | 2,870 | 16 Feb 2026 | Direct | ||
| Brian F. Brumfield | OGS | Common stock, par value $0.01 | Options Exercise | 63.4% | 1,284 | 3,309 | 16 Feb 2026 | Direct | ||
| Brian F. Brumfield | OGS | Restricted Units 2026 | Award | 959 | 959 | 16 Feb 2026 | Direct | |||
| Brian F. Brumfield | OGS | Performance Units 2026 | Award | 959 | 959 | 16 Feb 2026 | Direct | |||
| Brian F. Brumfield | OGS | Performance Units 2023 | Options Exercise | -100% | -1,513 | 0 | 16 Feb 2026 | Direct | ||
| Regina L. Gregory | OGS | Restricted Units 2026 | Award | 2,557 | 2,557 | 16 Feb 2026 | Direct | |||
| Regina L. Gregory | OGS | Performance Units 2026 | Award | 3,835 | 3,835 | 16 Feb 2026 | Direct | |||
| Mark A. Bender | OGS | Common stock, par value $0.01 | Tax liability | -4.25% | -1,268 | 28,582 | 16 Feb 2026 | Direct | ||
| Mark A. Bender | OGS | Common stock, par value $0.01 | Options Exercise | 9.93% | 2,697 | 29,851 | 16 Feb 2026 | Direct | ||
| Mark A. Bender | OGS | Restricted Units 2026 | Award | 1,534 | 1,534 | 16 Feb 2026 | Direct | |||
| Mark A. Bender | OGS | Performance Units 2026 | Award | 2,301 | 2,301 | 16 Feb 2026 | Direct | |||
| Mark A. Bender | OGS | Performance Units 2023 | Options Exercise | -100% | -3,179 | 0 | 16 Feb 2026 | Direct | ||
| Curtis L. Dinan | OGS | Common stock, par value $0.01 | Tax liability | -1.7% | -2,438 | 141,263 | 16 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.