$NWE

$78.45 +$0.86 (1.11%) Close

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

Ownership

13F as of Q2 2026 · 61.5M shares outstanding

Who owns NWE?

By type of holder

Institutions 95.6% Insiders 0.9% Everyone else 3.5%

Concentration Top 10 holders own 42.1%

BlackRock, Inc. 14.7% · Vanguard Portfolio Management LLC 5.8%

Institutional ownership

95.6%

-1.6 pts vs last qtr

Institutional holders

374

+1 vs last qtr

Net shares bought

−960.4K

by institutions in Q2 2026

New / sold out

37 / 36

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

BlackRock, Inc. +789.2K
Norges Bank NEW +780.6K

Biggest sellers in Q2 2026

Qube Research & Technologies Ltd −427.1K
Aqr Capital Management LLC −425.2K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for NorthWestern Energy Group Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2021–FY2025

+18.6%

+4.37% a year

Each share's claim on the business

−15.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $27.7M

over 5 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+ years71% 3–5 years2% 1–3 years11% Under 1 year16%

Quarterly turnover

9.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting NWE on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	9.1M	14.74%	+789.2K (+9.5%)	≤2021	0.0%
Shares held by quarter Peak holding11.1M (Q4'24) Change over 8 quarters−844.8K Share of the company14.740% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	3.5M	5.77%	+59.0K (+1.7%)	≤2021	0.0%
Shares held by quarter Peak holding3.5M (Q2'26) Change over 8 quarters+3.5M Share of the company5.770% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

9.1M

% of company

14.74%

Change vs last qtr

+789.2K (+9.5%)

Held since

≤2021

Vanguard Portfolio Management LLC

3.5M

% of company

5.77%

Change vs last qtr

+59.0K (+1.7%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding NorthWestern Energy Group Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting NWE on Form N-PORT; together they hold 44.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$151M	2.1M	3.42%	0.12%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$140M	2.0M	3.17%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$151M

% of company

3.42%

% of the fund

0.12%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$140M

% 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 NorthWestern Energy Group Inc 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
BB Bird Brian B Insider	218.0K	0.35%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.350% Bird Brian B's insider activity →
HJ Hines John D Insider	42.0K	0.07%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.070% Hines John D's insider activity →

Bird Brian B

Insider

218.0K

% of company

0.35%

Change vs last qtr

—

Held since

—

Hines John D

Insider

42.0K

% of company

0.07%

Change vs last qtr

—

Held since

—

17 more holders behind a free account

See every insider and 5%+ holder of NorthWestern Energy Group Inc.

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