$OGS

$77.46 -$0.96 (1.22%) Close

$OGS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 62.9M shares outstanding

Who owns OGS?

By type of holder

Institutions 92.7% Insiders 0.0% Everyone else 7.3%

Concentration Top 10 holders own 48.0%

BlackRock, Inc. 14.5% · Vanguard Portfolio Management LLC 5.9%

Institutional ownership

92.7%

+3.2 pts vs last qtr

Institutional holders

425

-2 vs last qtr

Net shares bought

+2.0M

by institutions in Q2 2026

New / sold out

57 / 59

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +879.1K
Aqr Capital Management LLC +613.7K

Biggest sellers in Q2 2026

Wellington Management Group LLP −2.0M
Nuveen, LLC −306.4K

Who is planning to sell?

Notices of proposed sale, last 12 months

$324K

2 notices from 2 people

Shares covered

4.0K

0.01% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Hutchinson Michael G Director $238K
Brumfield Brian F. Officer $86.4K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+14.3%

+1.49% a year

Each share's claim on the business

−12.5%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$41.6M vs $109M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years76% 3–5 years8% 1–3 years10% Under 1 year6%

Quarterly turnover

10.0%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting OGS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	9.1M	14.48%	−16.0K (−0.2%)	≤2021	0.0%
Shares held by quarter Peak holding9.1M (Q1'26) Change over 8 quarters+1.2M Share of the company14.480% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	3.7M	5.91%	+126.4K (+3.5%)	≤2021	0.0%
Shares held by quarter Peak holding3.7M (Q2'26) Change over 8 quarters+3.7M Share of the company5.910% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

9.1M

% of company

14.48%

Change vs last qtr

−16.0K (−0.2%)

Held since

≤2021

Vanguard Portfolio Management LLC

3.7M

% of company

5.91%

Change vs last qtr

+126.4K (+3.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding ONE Gas, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting OGS on Form N-PORT; together they hold 54.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$165M	2.1M	3.41%	0.13%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$153M	2.0M	3.17%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$165M

% of company

3.41%

% of the fund

0.13%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$153M

% of company

3.17%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding ONE Gas, Inc. and how much of the fund the position is.

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