$AM

$21.10 +$0.31 (1.49%) Close

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

Ownership

13F as of Q2 2026 · 474.7M shares outstanding

Who owns AM?

By type of holder

Institutions 59.7% Insiders 19.0% Everyone else 21.3%

Concentration Top 10 holders own 47.8%

Rady Paul M 18.2% · BlackRock, Inc. 8.1%

Institutional ownership

59.7%

+1.1 pts vs last qtr

Institutional holders

528

+16 vs last qtr

Net shares bought

+5.3M

by institutions in Q2 2026

New / sold out

65 / 49

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +3.4M
Covalis Capital LLP +2.0M

Biggest sellers in Q2 2026

Bank of New York Mellon Corp −2.2M
Prudential Financial Inc −2.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$4.59M

6 notices from 3 people

Shares covered

209.3K

0.04% of the company

Arranged in advance

48%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Kennedy Michael N. Officer 10b5-1 $2.19M
Yvette Schultz Officer $2.09M

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, FY2017–FY2025

+159.0%

+12.63% a year

Each share's claim on the business

−61.4%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$314M vs $311M

over 9 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+ years77% 3–5 years7% 1–3 years9% Under 1 year7%

Quarterly turnover

7.0%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting AM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	38.2M	8.05%	+1.1M (+2.9%)	≤2021	0.0%
Shares held by quarter Peak holding40.2M (Q4'24) Change over 8 quarters−355.8K Share of the company8.050% BlackRock, Inc.'s full portfolio →
I Invesco Ltd.	20.7M	4.37%	−809.9K (−3.8%)	≤2021	0.0%
Shares held by quarter Peak holding30.6M (Q1'25) Change over 8 quarters−9.5M Share of the company4.370% Invesco Ltd.'s full portfolio →

BlackRock, Inc.

38.2M

% of company

8.05%

Change vs last qtr

+1.1M (+2.9%)

Held since

≤2021

Invesco Ltd.

20.7M

% of company

4.37%

Change vs last qtr

−809.9K (−3.8%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Antero Midstream Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting AM on Form N-PORT; together they hold 33.3% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$259M	11.4M	2.40%	0.21%	June 30, 2026
IS Invesco SteelPath MLP Income Fund AIM Investment Funds (Invesco Investment Funds)	$250M	11.9M	2.51%	5.60%	May 31, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$259M

% of company

2.40%

% of the fund

0.21%

As of

June 30, 2026

Invesco SteelPath MLP Income Fund

AIM Investment Funds (Invesco Investment Funds)

Position value

$250M

% of company

2.51%

% of the fund

5.60%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding Antero Midstream Corporation and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
RP Rady Paul M Insider	86.5M	18.22%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company18.220% Rady Paul M's insider activity →
KW Keenan W Howard JR Insider	3.5M	0.74%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.740% Keenan W Howard JR's insider activity →

Rady Paul M

Insider

86.5M

% of company

18.22%

Change vs last qtr

—

Held since

—

Keenan W Howard JR

Insider

3.5M

% of company

0.74%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

See every insider and 5%+ holder of Antero Midstream Corporation.

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