$MNR

$10.62 +$0.05 (0.47%) Close

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

Ownership

13F as of Q2 2026 · 166.9M shares outstanding

Who owns MNR?

By type of holder

Institutions 15.5% Insiders 0.0% Everyone else 84.5%

Concentration Top 10 holders own 147.5%

William Wallace McMullen 44.8% · Bayou City Energy Management LLC 44.8%

Institutional ownership

15.5%

-1.7 pts vs last qtr

Institutional holders

+5 vs last qtr

Net shares bought

−2.9M

by institutions in Q2 2026

New / sold out

17 / 12

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Morgan Stanley +762.2K
Royce & Associates LP NEW +448.6K

Biggest sellers in Q2 2026

Kayne Anderson Capital Advisors LP −3.4M
Ing Groep NV SOLD OUT −1.0M

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Mach Natural Resources LP in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2023–FY2025

+38.6%

+17.73% a year

Each share's claim on the business

−27.8%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $19.4M

over 3 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+ years0% 3–5 years0% 1–3 years27% Under 1 year73%

Quarterly turnover

15.5%

of institutional shares changed hands

Top 10 managers, median time held

1 year

Super Investors

Investment managers reporting MNR on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
KA Kayne Anderson Capital Advisors LP	15.5M	9.29%	−3.4M (−18.2%)	Q3 '25	3.9%
Shares held by quarter Peak holding19.2M (Q3'25) Change over 8 quarters+15.5M Share of the company9.290% Kayne Anderson Capital Advisors LP's full portfolio →
AC American Century Companies Inc	2.5M	1.47%	+97.4K (+4.1%)	2023	0.0%
Shares held by quarter Peak holding2.6M (Q2'25) Change over 8 quarters+225.1K Share of the company1.470% American Century Companies Inc's full portfolio →

Kayne Anderson Capital Advisors LP

15.5M

% of company

9.29%

Change vs last qtr

−3.4M (−18.2%)

Held since

Q3 '25

American Century Companies Inc

2.5M

% of company

1.47%

Change vs last qtr

+97.4K (+4.1%)

Held since

2023

28 more super investors behind a free account

See every manager holding Mach Natural Resources LP, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MNR on Form N-PORT; together they hold 2.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
SC Small Cap Value Fund American Century Capital Portfolios, Inc.	$18.9M	1.5M	0.90%	0.62%	June 30, 2026
MD Multi-Asset Diversified Income Index Fund First Trust Exchange-Traded Fund VI	$6.25M	494.3K	0.30%	1.50%	June 30, 2026

Small Cap Value Fund

American Century Capital Portfolios, Inc.

Position value

$18.9M

% of company

0.90%

% of the fund

0.62%

As of

June 30, 2026

Multi-Asset Diversified Income Index Fund

First Trust Exchange-Traded Fund VI

Position value

$6.25M

% of company

0.30%

% of the fund

1.50%

As of

June 30, 2026

16 more funds behind a free account

See every fund holding Mach Natural Resources LP 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
WW William Wallace McMullen 5%+ holder 13D · 63.2%	74.8M	44.81%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company44.810% Disclosed stake13D · 63.2% View the 13D/G filing →
BC Bayou City Energy Management LLC 5%+ holder 13D · 63.2%	74.8M	44.81%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company44.810% Disclosed stake13D · 63.2% View the 13D/G filing →

William Wallace McMullen

5%+ holder13D · 63.2%

74.8M

% of company

44.81%

Change vs last qtr

—

Held since

—

Bayou City Energy Management LLC

5%+ holder13D · 63.2%

74.8M

% of company

44.81%

Change vs last qtr

—

Held since

—

1 more holders behind a free account

See every insider and 5%+ holder of Mach Natural Resources LP.

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