Kaiser Aluminum KALU Insider Ownership

NASDAQ KALU

$153.95 +1.41 (+0.92%)

At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

422.33K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

2.36%

■0% pp QoQ

Shares Held by Insiders

386.64K

filed for Sep 2026

■0.00% QoQ

Shares Outstanding

16.35Mn

16,349,092 shares

Direct Holdings

354.48K

Indirect: 32.16K

Net Shares Traded (QoQ)

no net change in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Across the past 12 months, open-market trades by Kaiser Aluminum insiders were all sales, totaling $16.75 million (106.59K shares).

Kaiser Aluminum's open-market sales in the past 12 months came from 7 insiders; no insider bought.
Keith Harvey (President & CEO) sold the most Kaiser Aluminum stock on the open market over the past 12 months, $8.75 million (50.03K shares), most recently on April 29, 2026.
In transactions other than open-market trades, Kaiser Aluminum insiders received 106.57K shares in stock awards, gave up 36.18K shares to cover taxes or exercise prices and gave away 1.5K shares as gifts over the past 12 months.
Per Business Quant data, Kaiser Aluminum insiders hold 386.64K shares in total based on their latest Form 4 filings, or 2.36% of the 16.35Mn shares outstanding; that total is unchanged from 386.64K shares at the end of Q2 2026 and down 17.25% from 467.23K shares at the end of Q3 2025.
Direct holdings account for 354.48K shares (91.68%) of KALU's insider total, and indirect holdings through trusts, partnerships and family members for 32.16K shares (8.32%).
KALU's insider total is spread across 20 insiders who have filed a Form 4 in the past two years.
KALU's three largest insider shareholders, per their latest Form 4 filings, are Keith Harvey (President & CEO, 94.31K shares), Jason Walsh (EVP & Manufacturing, 42.77K shares) and Neal E. West (EVP & CFO, 37.48K shares).
The holding of Keith Harvey makes up 24.39% of all shares held by Kaiser Aluminum insiders.
In the last 12 months, 29 Form 4 filings with transactions in KALU stock came from 16 insiders.
These insider figures for Kaiser Aluminum are based on Form 4 filings through June 5, 2026.

Form 4 Holdings

Insiders Holding KALU

Insiders 29

Shares held 422.33K

Of outstanding 2.58%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Keith Harvey	President Ceo	94,308	0	94,308	22.3%	01 May, 2026
2	Jason Walsh	Evp Manufacturing	42,770	0	42,770	10.1%	14 Aug, 2025
3	John Malcolm Donnan	Evp, Cao And Gc	28,200	0	28,200	6.7%	29 Apr, 2026
4	Blain Tiffany	Evp Sales Marketing	26,275	0	26,275	6.2%	10 Nov, 2025
5	Alfred E Jr Osborne	Director	24,957	0	24,957	5.9%	09 Jun, 2023
6	David A Foster	Director	24,332	0	24,332	5.8%	05 Jun, 2026
7	Ray Parkinson	Svp Ae Innovation	20,750	0	20,750	4.9%	07 Mar, 2025
8	Neal E West	Evp Cfo	0	19,091	19,091	4.5%	29 Apr, 2026
9	Thomas H. Robb	Evp Manufacturing	17,898	0	17,898	4.2%	09 Mar, 2026
10	Donald J Stebbins	Director	15,407	0	15,407	3.6%	05 Jun, 2026
11	Michael C Arnold	Director	11,445	0	11,445	2.7%	05 Jun, 2026
12	Kevin W Williams	Director	8,562	0	8,562	2.0%	12 Jun, 2025
13	Lauralee Martin	Director	8,345	0	8,345	2.0%	12 Jun, 2025
14	Jennifer Huey	Vp Chief Accounting Officer	7,938	0	7,938	1.9%	07 Mar, 2023
15	Vijai Narayan	Vp, Corp Ctrl Cao	7,517	0	7,517	1.8%	09 Mar, 2026
16	Brant Weaver	Vp Strategic Development	7,337	0	7,337	1.7%	02 Jun, 2023
17	Mark Krouse	Vp Human Resources	7,248	0	7,248	1.7%	07 Mar, 2023
18	Del L Miller	Vp Metal Strategy	6,589	0	6,589	1.6%	07 Mar, 2023
19	Hugh J. Iii Barger	Evp Sales Marketing	5,711	0	5,711	1.4%	09 Mar, 2026
20	Richard P. Grimley	Director	5,364	0	5,364	1.3%	05 Jun, 2026
21	Glenda J Minor	Director	4,516	0	4,516	1.1%	05 Jun, 2026
22	Iulian Gheorghe	Svp Adv Eng Innovation	4,448	0	4,448	1.1%	29 Apr, 2026
23	Leo Wilfred Gerard	Director	4,266	0	4,266	1.0%	06 Jun, 2022
24	James Donald Hoffman	Director	3,760	0	3,760	0.9%	05 Jun, 2026
25	Teresa Mosley Sebastian	Director	3,745	0	3,745	0.9%	13 Jun, 2024
26	Kimberly Thompson Glas	Director	3,466	0	3,466	0.8%	05 Jun, 2026
27	Melinda C Ellsworth	Vp Ir Corp. Communications	3,432	0	3,432	0.8%	08 Mar, 2022
28	Brett Wilcox	Director	3,019	0	3,019	0.7%	05 Jun, 2026
29	Jack A Hockema	Ceo	1,639	0	1,639	0.4%	13 Jun, 2024

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,658 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
04 Jun, 2026	Glenda J Minor	Director	Acquired A	786	$0.00	$0	4,181	Direct
04 Jun, 2026	Michael C Arnold	Director	Acquired A	786	$0.00	$0	11,445	Direct
04 Jun, 2026	Brett Wilcox	Director	Acquired A	786	$0.00	$0	2,691	Direct
04 Jun, 2026	Kimberly Thompson Glas	Director	Acquired A	786	$0.00	$0	3,466	Direct
04 Jun, 2026	Donald J Stebbins	Director	Acquired A	786	$0.00	$0	14,776	Direct
04 Jun, 2026	James Donald Hoffman	Director	Acquired A	786	$0.00	$0	3,171	Direct
04 Jun, 2026	Richard P. Grimley	Director	Acquired A	786	$0.00	$0	5,364	Direct
04 Jun, 2026	David A Foster	Director	Acquired A	786	$0.00	$0	24,332	Direct
04 Jun, 2026	Donald J Stebbins	Director	Acquired A	631	$178.10	$112.38K	15,407	Direct
04 Jun, 2026	James Donald Hoffman	Director	Acquired A	589	$178.10	$104.90K	3,760	Direct
04 Jun, 2026	Glenda J Minor	Director	Acquired A	335	$178.10	$59.66K	4,516	Direct
04 Jun, 2026	Brett Wilcox	Director	Acquired A	328	$178.10	$58.42K	3,019	Direct
29 Apr, 2026	Keith Harvey	President Ceo	Disposed S	3,031	$173.13	$524.76K	94,308	Direct
29 Apr, 2026	Richard P. Grimley	Director	Disposed S	1,524	$171.52	$261.40K	4,578	Direct
28 Apr, 2026	Neal E West	Evp Cfo	Disposed S	5,000	$173.29	$866.45K	19,091	Indirect
27 Apr, 2026	Brett Wilcox	Director	Disposed S	15,000	$174.44	$2.62Mn	9,887	Indirect
27 Apr, 2026	John Malcolm Donnan	Evp, Cao And Gc	Disposed S	2,743	$178.20	$488.81K	29,700	Direct
27 Apr, 2026	Keith Harvey	President Ceo	Disposed S	47,001	$175.09	$8.23Mn	97,339	Direct
27 Apr, 2026	Iulian Gheorghe	Svp Adv Eng Innovation	Disposed S	175	$174.22	$30.49K	4,448	Direct
28 Apr, 2026	John Malcolm Donnan	Evp, Cao And Gc	Disposed G	1,500	$0.00	$0	28,200	Direct

Showing 1 to 20 of 1,658 transactions