Kaiser Aluminum Corporation (KALU) ownership: Top institutional holder: BlackRock, Inc. ($342.60M). Insider activity: Net Seller (6 buys, 14 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 2842894.00 | $342.60M | 2026-03-31 |
| VANGUARD GROUP INC | 2117791.00 | $243.25M | 2025-12-31 |
| STATE STREET CORP | 1332923.00 | $160.63M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1308750.00 | $157.72M | 2026-03-31 |
| BlackRock Fund Advisors | 1450836.00 | $112.72M | 2016-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 818314.00 | $98.61M | 2026-03-31 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 714176.00 | $86.06M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 669768.00 | $80.71M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-04-29 | |
| Sell | null | 2026-04-29 | |
| Sell | null | 2026-04-28 | |
| Sell | null | 2026-04-28 | |
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-04-27 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.