ONE Gas, Inc.
ONE Gas, Inc. (OGS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OGS · as of Sep 30, 2025
Ownership Breakdown
398
Institutional Holders
▲ 5 vs Q2
$4.50B
Total Inst. Value
▲ $382.92M vs Q2
62.76M
Shares Outstanding
freeFloat 98.95%
55.60M
13F Shares Held
▼ 1.69M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OGS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. natural gas distribution | 8.37M | 13.92% | 13.92% | $677.52B | Nov 12, 2025 | ▼ 162.6K |
VANGUARD GROUP INC natural gas distribution | 6.54M | 10.88% | 10.88% | $529.56B | Nov 7, 2025 | ▼ 31.1K |
WELLINGTON MANAGEMENT GROUP LLP natural gas distribution | 4.19M | 6.97% | 6.97% | $339.23B | Nov 14, 2025 | ▼ 143.1K |
AMERICAN CENTURY COMPANIES INC natural gas distribution | 3.82M | 6.35% | 6.35% | $308.90B | Nov 12, 2025 | ▲ 202.2K |
STATE STREET CORP natural gas distribution | 3.04M | 5.05% | 5.05% | $245.92B | Nov 14, 2025 | ▲ 43.2K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. natural gas distribution | 2.05M | 3.41% | 3.41% | $165.92B | Nov 14, 2025 | ▲ 15.4K |
ALLIANCEBERNSTEIN L.P. natural gas distribution | 1.71M | 2.84% | 2.84% | $138.23B | Nov 14, 2025 | ▲ 110.3K |
GEODE CAPITAL MANAGEMENT, LLC natural gas distribution | 1.49M | 2.48% | 2.48% | $120.56B | Nov 12, 2025 | ▲ 10.3K |
EARNEST PARTNERS LLC natural gas distribution | 1.26M | 2.09% | 2.09% | $101.77B | Nov 14, 2025 | ▼ 67.1K |
BOSTON TRUST WALDEN CORP natural gas distribution | 1.05M | 1.74% | 1.74% | $84.84B | Oct 17, 2025 | ▼ 22.6K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+1.72M shares1
New Positions
first time holders23
Decreased
−1.24M shares0
Sold Out
fully exitedNet shares change (top 50)
+480.5K
+1.72M / −1.24M
Net new holders
+2
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OGS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
10
Buy transactions
2
Sell transactions
5.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Meshri Sanjay D. director | May 21, 2026 | Award | 1,700 | $82.35 | $140.0K | 5.3K | Form 4 ↗ |
MOORE PATTYE L director | May 21, 2026 | Award | 1,700 | — | — | 55.9K | Form 4 ↗ |
Hersman Deborah director | May 21, 2026 | Award | 1,700 | — | — | 7.5K | Form 4 ↗ |
RODRIGUEZ EDUARDO A director | May 21, 2026 | Award | 1,275 | $82.35 | $105.0K | 14.6K | Form 4 ↗ |
RODRIGUEZ EDUARDO A director | May 21, 2026 | Award | 425 | — | — | 5.3K | Form 4 ↗ |
Hutchinson Michael G director | May 21, 2026 | Award | 1,700 | $82.35 | $140.0K | 16.3K | Form 4 ↗ |
Siegel Yves C director | May 21, 2026 | Award | 1,700 | — | — | 5.4K | Form 4 ↗ |
Hart Tracy E director | May 21, 2026 | Award | 1,700 | $82.35 | $140.0K | 11.3K | Form 4 ↗ |
RODRIGUEZ EDUARDO A director | Mar 6, 2026 | Sale | 850 | $86.34 | $73.4K | 13.4K | Form 4 ↗ |
Brumfield Brian F. See Remarks | Feb 24, 2026 | Sale | 1,000 | $86.44 | $86.4K | 2.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
ONE Gas, Inc. (OGS) is primarily owned by institutional investors, who hold approximately 88.6% of total shares outstanding. Company insiders own approximately 1.05%, while retail and public investors account for the remaining 10.36%.
The largest institutional shareholder of ONE Gas, Inc. is BLACKROCK, INC., holding approximately 8.37 million shares — equal to 13.92% of outstanding shares — as of September 30, 2025.
A total of 398 institutional investors currently hold OGS stock, with a combined institutional value of approximately $4.50 billion as of the most recent 13F filing period.
Frequently asked questions
OGS ownershipONE Gas, Inc. (OGS) is primarily owned by institutional investors, who hold approximately 88.6% of shares. The largest shareholder is BLACKROCK, INC. with a 13.92% stake. Company insiders hold 1.05%. Data sourced from SEC Form 13F as of September 30, 2025.