Comparable stake leader
BlackRock, Inc.
SEC ownership of KAISER ALUMINUM CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000811596.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- KALU on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000811596
- Issuer location
- Franklin, TN
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of KAISER ALUMINUM CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 15%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
15%
STATE STREET CORP
8.2%
VANGUARD PORTFOLIO MANAGEMENT LLC
8.1%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
BARROW HANLEY MEWHINNEY & STRAUSS...
4.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
15%
from 13D/G
|
$342,597,163
2,842,894 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
8.2%
|
$191,167,817
1,332,923 shares
|
$0 | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
8.1%
|
$158,999,809
1,319,391 shares
|
$0 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.1%
|
$131,923,056
833,479 shares
|
$0 | 30 Jun 2026 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC |
13F
13D/G
Company
|
4.8%
from 13D/G
|
$63,951,162
530,671 shares
|
— | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.7%
|
$151,797,925
775,944 shares
|
-$7,082,197 | 30 Jun 2026 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13D/G
13F
Company
|
4.4%
|
$102,427,122
714,176 shares
|
-$27,795,083 | 31 Mar 2026 |
| VICTORY CAPITAL MANAGEMENT INC |
13D/G
13F
Company
|
2.9%
|
$28,199,046
451,763 shares
|
-$24,730,554 | 31 Dec 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$16,748,526.
Buys
$0
Insiders: 0
Sells
$16,748,526
Insiders: 7
Net
-$16,748,526
Shares: -106,591
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 106,591
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 97,935 | $0 | $15,935,528 | -$15,935,528 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 8,656 | $0 | $812,997 | -$812,997 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 31 reporting-owner rows connected to KAISER ALUMINUM CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
31
Largest Forms 3/4/5 holder
Keith Harvey
Net 12M change
-$16,748,525
Latest report
04 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Keith Harvey | President & CEO, Director | $16,327,544 | -$8,754,162 | -35% | Filing P/S | 29 Apr 2026 |
| Neal E. West | Evp & Cfo | $5,524,457 | -$1,475,050 | -21% | Mixed | 28 Apr 2026 |
| John M. Donnan | EVP, CAO and GC | $3,398,382 | -$2,797,831 | -45% | Mixed | 27 Apr 2026 |
| Jack A. Hockema | Director | $3,317,708 | Mixed | 11 Jun 2024 | ||
| Jason Walsh | EVP - Manufacturing | $3,195,774 | Mixed | 12 Aug 2025 | ||
| David A. Foster | Director | $2,932,249 | Mixed | 04 Jun 2026 | ||
| Thomas H. Robb | EVP - Manufacturing | $2,469,924 | Mixed | 05 Mar 2026 | ||
| Blain Tiffany | EVP - Sales & Marketing | $2,467,826 | -$812,997 | -25% | Filing P/S | 07 Nov 2025 |
| Alfred E. Osborne Jr. | Director | $2,309,288 | Mixed | 07 Jun 2023 | ||
| Donald J. Stebbins | Director | $1,862,722 | Mixed | 04 Jun 2026 | ||
| Ray Parkinson | SVP - AE & Innovation | $1,651,032 | Mixed | 05 Mar 2025 | ||
| Brett Wilcox | Director | $1,555,301 | -$2,616,600 | -63% | Mixed | 04 Jun 2026 |
| Michael C. Arnold | Director | $1,379,236 | Mixed | 04 Jun 2026 | ||
| Thomas Melton van Leeuwen | Director | $1,335,254 | Mixed | 03 Jun 2021 | ||
| Vijai Narayan | VP, Corp Ctrl & CAO | $1,037,346 | Mixed | 05 Mar 2026 | ||
| Mark Krouse | VP - Human Resources | $983,078 | Mixed | 05 Mar 2023 | ||
| Teresa Mosley Sebastian | Director | $961,633 | Mixed | 11 Jun 2024 | ||
| Melinda C. Ellsworth | VP IR & Corp. Communications | $820,149 | Mixed | 05 Mar 2022 | ||
| Hugh J. Barger III | EVP - Sales & Marketing | $788,118 | Mixed | 05 Mar 2026 | ||
| Iulian Gheorghe | SVP - Adv Eng & Innovation | $774,930 | -$30,489 | -3.8% | Filing P/S | 27 Apr 2026 |
Recent insider transactions for KAISER ALUMINUM CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Michael C. Arnold | KALU | Common Stock, par value $0.01 per share | Award | 7.37% | 786 | 11,445 | 04 Jun 2026 | Direct | ||
| Kimberly T. Glas | KALU | Common Stock, par value $0.01 per share | Award | 29.3% | 786 | 3,466 | 04 Jun 2026 | Direct | ||
| Donald J. Stebbins | KALU | Common Stock, par value $0.01 per share | Award | 10.1% | 1,417 | 15,407 | 04 Jun 2026 | Direct | ||
| Brett Wilcox | KALU | Common Stock, par value $0.01 per share | Award | 58.5% | 1,114 | 3,019 | 04 Jun 2026 | Direct | ||
| James D. Hoffman | KALU | Common Stock, par value $0.01 per share | Award | 57.6% | 1,375 | 3,760 | 04 Jun 2026 | Direct | ||
| Richard P. Grimley | KALU | Common Stock, par value $0.01 per share | Award | 17.2% | 786 | 5,364 | 04 Jun 2026 | Direct | ||
| Glenda J. Minor | KALU | Common Stock, par value $0.01 per share | Award | 33% | 1,121 | 4,516 | 04 Jun 2026 | Direct | ||
| David A. Foster | KALU | Common Stock, par value $0.01 per share | Award | 3.34% | 786 | 24,332 | 04 Jun 2026 | Direct | ||
| Richard P. Grimley | KALU | Common Stock, par value $0.01 per share | Sale | -25% | $261,396 | $171.52 | -1,524 | 4,578 | 29 Apr 2026 | Direct |
| Keith Harvey | KALU | Common Stock, par value $0.01 per share | Sale | -3.11% | $524,757 | $173.13 | -3,031 | 94,308 | 29 Apr 2026 | Direct |
| John M. Donnan | KALU | Common Stock, par value $0.01 per share | Gift | -5.05% | -1,500 | 28,200 | 28 Apr 2026 | Direct | ||
| Neal E. West | KALU | Common Stock, par value $0.01 per share | Sale | -20.8% | $866,450 | $173.29 | -5,000 | 19,091 | 28 Apr 2026 | By West Family Trust |
| Brett Wilcox | KALU | Common Stock, par value $0.01 per share | Sale | -60.3% | $2,616,600 | $174.44 | -15,000 | 9,887 | 27 Apr 2026 | By Wilcox Revocable Trust |
| John M. Donnan | KALU | Common Stock, par value $0.01 per share | Sale | -8.45% | $488,807 | $178.20 | -2,743 | 29,700 | 27 Apr 2026 | Direct |
| Iulian Gheorghe | KALU | Common Stock, par value $0.01 per share | Sale | -3.79% | $30,488 | $174.22 | -175 | 4,448 | 27 Apr 2026 | Direct |
| Keith Harvey | KALU | Common Stock, par value $0.01 per share | Sale | -32.6% | $8,229,405 | $175.09 | -47,001 | 97,339 | 27 Apr 2026 | Direct |
| Keith Harvey | KALU | Common Stock, par value $0.01 per share | Tax liability | -14.6% | -24,581 | 144,340 | 05 Mar 2026 | Direct | ||
| Keith Harvey | KALU | Common Stock, par value $0.01 per share | Award | 63.6% | 65,690 | 168,921 | 05 Mar 2026 | Direct | ||
| Thomas H. Robb | KALU | Common Stock, par value $0.01 per share | Award | 19.8% | 2,954 | 17,898 | 05 Mar 2026 | Direct | ||
| Iulian Gheorghe | KALU | Common Stock, par value $0.01 per share | Tax liability | -4.46% | -216 | 4,623 | 05 Mar 2026 | Direct | ||
| Iulian Gheorghe | KALU | Common Stock, par value $0.01 per share | Award | 21.4% | 852 | 4,839 | 05 Mar 2026 | Direct | ||
| Hugh J. Barger III | KALU | Common Stock, par value $0.01 per share | Award | 41.9% | 1,686 | 5,711 | 05 Mar 2026 | Direct | ||
| Vijai Narayan | KALU | Common Stock, par value $0.01 per share | Tax liability | -7.15% | -579 | 7,517 | 05 Mar 2026 | Direct | ||
| Vijai Narayan | KALU | Common Stock, par value $0.01 per share | Award | 9.96% | 733 | 8,096 | 05 Mar 2026 | Direct | ||
| Neal E. West | KALU | Common Stock, par value $0.01 per share | Tax liability | -15.5% | -5,455 | 29,706 | 05 Mar 2026 | Direct | ||
| Neal E. West | KALU | Common Stock, par value $0.01 per share | Award | 85.4% | 16,201 | 35,161 | 05 Mar 2026 | Direct | ||
| John M. Donnan | KALU | Common Stock, par value $0.01 per share | Tax liability | -13.6% | -5,110 | 32,443 | 05 Mar 2026 | Direct | ||
| John M. Donnan | KALU | Common Stock, par value $0.01 per share | Award | 69.1% | 15,348 | 37,553 | 05 Mar 2026 | Direct | ||
| Thomas H. Robb | KALU | Common Stock, par value $0.01 per share | Award | 3.03% | 440 | 14,944 | 23 Feb 2026 | Direct | ||
| John M. Donnan | KALU | Common Stock, par value $0.01 per share | Sale | -45.4% | $2,309,024 | $125.08 | -18,461 | 22,205 | 23 Feb 2026 | Direct |
| Neal E. West | KALU | Common Stock, par value $0.01 per share | Sale | -28.1% | $608,600 | $121.72 | -5,000 | 12,775 | 23 Feb 2026 | By West Family Trust |
| Iulian Gheorghe | KALU | Common Stock, par value $0.01 per share | Tax liability | -1.87% | -76 | 3,987 | 19 Feb 2026 | Direct | ||
| Keith Harvey | KALU | Common Stock, par value $0.01 per share | Disposed to Issuer | -24.2% | -33,000 | 103,231 | 21 Nov 2025 | Direct | ||
| Vijai Narayan | KALU | Common Stock, par value $0.01 per share | Tax liability | -2.17% | -163 | 7,363 | 07 Nov 2025 | Direct | ||
| Blain Tiffany | KALU | Common Stock, par value $0.01 per share | Sale | -24.8% | $812,997 | $93.92 | -8,656 | 26,275 | 07 Nov 2025 | Direct |
| James D. Hoffman | KALU | Common Stock, par value $0.01 per share | Award | 2,385 | 2,385 | 18 Sep 2025 | Direct | |||
| Jason Walsh | KALU | Common Stock, par value $0.01 per share | Tax liability | -14.5% | -7,236 | 42,770 | 12 Aug 2025 | Direct | ||
| Blain Tiffany | KALU | Common Stock, par value $0.01 per share | Tax liability | -16.7% | -6,982 | 34,931 | 12 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.