$KALU

$119.83 -$1.02 (0.84%) Close

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

Ownership

13F as of Q2 2026 · 16.3M shares outstanding

Who owns KALU?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 57.8%

BlackRock, Inc. 17.6% · Vanguard Portfolio Management LLC 8.6%

Institutional ownership

100.0%

+2.7 pts vs last qtr

Institutional holders

334

+46 vs last qtr

Net shares bought

+498.8K

by institutions in Q2 2026

New / sold out

80 / 34

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Franklin Resources Inc +266.0K
Westfield Capital Management Co LP NEW +163.5K

Biggest sellers in Q2 2026

Arrowstreet Capital, Limited Partnership −184.2K
Brightline Capital Management, LLC SOLD OUT −175.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$23M

13 notices from 9 people

Shares covered

174.8K

1.07% 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

Keith Harvey Ceo $11.7M
Blain Tiffany Officer $2.67M

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

−7.8%

−0.90% a year

Each share's claim on the business

+8.5%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$230M vs $131M

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+ years71% 3–5 years7% 1–3 years7% Under 1 year15%

Quarterly turnover

12.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting KALU on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	2.9M	17.56%	+27.7K (+1.0%)	≤2021	0.0%
Shares held by quarter Peak holding3.1M (Q4'24) Change over 8 quarters−215.0K Share of the company17.560% BlackRock, Inc.'s full portfolio →
VP Vanguard Portfolio Management LLC	1.4M	8.64%	+104.4K (+8.0%)	≤2021	0.0%
Shares held by quarter Peak holding1.4M (Q2'26) Change over 8 quarters+1.4M Share of the company8.640% Vanguard Portfolio Management LLC's full portfolio →

BlackRock, Inc.

2.9M

% of company

17.56%

Change vs last qtr

+27.7K (+1.0%)

Held since

≤2021

Vanguard Portfolio Management LLC

1.4M

% of company

8.64%

Change vs last qtr

+104.4K (+8.0%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting KALU on Form N-PORT; together they hold 58.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$191M	975.5K	5.97%	0.17%	June 30, 2026
SS State Street(R) SPDR(R) S&P(R) Metals & Mining ETF SPDR Series Trust	$129M	659.4K	4.03%	2.94%	June 30, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$191M

% of company

5.97%

% of the fund

0.17%

As of

June 30, 2026

State Street(R) SPDR(R) S&P(R) Metals & Mining ETF

SPDR Series Trust

Position value

$129M

% of company

4.03%

% of the fund

2.94%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Kaiser Aluminum 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
DJ Donnan John Malcolm Insider	2.1K	0.01%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.010% Donnan John Malcolm's insider activity →

Donnan John Malcolm

Insider

2.1K

% of company

0.01%

Change vs last qtr

—

Held since

—

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