Kaiser Aluminum
Produces specialty aluminum mill products for aerospace, packaging, engineering, and automotive applications.
$156.72
After-hours close+0.29 (+0.18%)
At close$156.43(−0.20%)
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Breakdown13F · Form 4
Institutions 125.96%Insiders 2.35%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 16.35M · Float 15.96M · 97.6% free float
Institutions13F, as of Jun 30, 2026
344 holders · 20.59M shares · 82 new positions · 196 increased · 104 reduced · 32 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 2.87M | 17.56% | +27.7K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 1.41M | 8.64% | +104.4K | Aug 13, 2026 |
| State Street Corp | 1.32M | 8.06% | −15.4K | Aug 7, 2026 |
| Dimensional Fund Advisors LP | 775.9K | 4.75% | −42.4K | Aug 11, 2026 |
| Vanguard Capital Management LLC | 707.2K | 4.33% | +37.4K | Aug 13, 2026 |
| Macquarie Management Holdings, Inc. | 679.4K | 4.16% | −34.8K | Aug 14, 2026 |
| Geode Capital Management, LLC | 471.7K | 2.89% | +67.7K | Aug 12, 2026 |
| American Century Companies Inc | 439.9K | 2.69% | −38.9K | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 14.80% | 2.40M | 13G | Apr 24, 2026 ↗ |
| State Street Corporation | 8.20% | 1.33M | 13G | May 12, 2026 ↗ |
| Vanguard Portfolio Management | 8.13% | 1.32M | 13G | Apr 29, 2026 ↗ |
| Barrow Hanley Mewhinney & Strauss LLC | 5.39% | 872.8K | 13G | Aug 12, 2025 ↗ |
| Vanguard Capital Management | 5.10% | 833.5K | 13G | Jul 31, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Keith Harvey | director, officer: President & CEO | 94.3K | 0.58% | May 1, 2026 |
| Jason Walsh | officer: EVP - Manufacturing | 42.8K | 0.26% | Aug 14, 2025 |
| Neal E. West | officer: EVP & CFO | 42.0K | 0.26% | Apr 29, 2026 |
| John Malcolm Donnan | officer: EVP, CAO and GC | 28.2K | 0.17% | Apr 29, 2026 |
| Blain Tiffany | officer: EVP - Sales & Marketing | 26.3K | 0.16% | Nov 10, 2025 |
| David A. Foster | director | 24.3K | 0.15% | Jun 5, 2026 |
| Ray Parkinson | officer: SVP - AE & Innovation | 20.8K | 0.13% | Mar 7, 2025 |
| Thomas H. Robb | officer: EVP - Manufacturing | 17.9K | 0.11% | Mar 9, 2026 |
| Donald J. Stebbins | director | 14.8K | 0.09% | Jun 5, 2026 |
| Brett Wilcox | director | 12.6K | 0.08% | Jun 5, 2026 |
1 ten-percent owner holds 1.89M shares by Form 4, outside the officers-and-directors figure above · 25 people have not refiled in the last 18 months (337.9K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Apr 29, 2026 | Keith Harveydirector, officer: President & CEO | Sale | 3,031 | $173.13 | 94,308 |
| Apr 29, 2026 | Richard P. Grimleydirector | Sale | 1,524 | $171.52 | 4,578 |
| Apr 27, 2026 | Keith Harveydirector, officer: President & CEO | Sale | 47,001 | $175.09 | 97,339 |
| Apr 28, 2026 | Neal E. Westofficer: EVP & CFO | Sale | 5,000 | $173.29 | 19,091 |
| Apr 27, 2026 | Iulian Gheorgheofficer: SVP - Adv Eng & Innovation | Sale | 175 | $174.22 | 4,448 |
| Apr 27, 2026 | John Malcolm Donnanofficer: EVP, CAO and GC | Sale | 2,743 | $178.20 | 29,700 |
| Apr 27, 2026 | Brett Wilcoxdirector | Sale | 15,000 | $174.44 | 9,887 |
| Feb 23, 2026 | Neal E. Westofficer: EVP & CFO | Sale | 5,000 | $121.72 | 12,775 |
| Feb 23, 2026 | John Malcolm Donnanofficer: EVP, CAO and GC | Sale | 18,461 | $125.08 | 22,205 |
| Nov 7, 2025 | Blain Tiffanyofficer: EVP - Sales & Marketing | Sale | 8,656 | $93.92 | 26,275 |
CongressHouse and Senate disclosures
Not reported.