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Kaiser Aluminum Corp. planned insider sales

In the twelve months since 11 October 2025 insiders at Kaiser Aluminum Corp. filed 13 Form 144 notices of planned sales, 174,385 shares worth $22.9 million at the time of filing, from 9 sellers. The latest, filed 29 April 2026: Grimley Richard P. (director), 1,524 shares worth $262,615, planned for around 29 April 2026 through Charles Schwab Corporation.

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
29 April 2026Grimley Richard P.Director1,524$262,61529 April 2026Charles Schwab CorporationRestricted Stock AwardForm 144
28 April 2026West Neal EOfficer5,000$866,27828 April 2026Wells Fargo Clearing ServicesCompensationForm 144
27 April 2026Iulian GheorgheOfficer175$30,48827 April 2026UBS Financial Services IncRSUForm 144
27 April 2026Donnan John MOfficer2,743$488,80727 April 2026R.W. BairdVesting of Equity AwardForm 144
27 April 2026Brett WilcoxBoard Member15,000$2.6 million27 April 2026UBS Financial Services IncRSUForm 144
27 April 2026Keith HarveyCeo50,032$8.8 million27 April 2026MerrillCompensationForm 144
23 March 2026Blain TiffanyOfficer7,111$797,41623 March 2026UBS Financial Services IncPSA; RSUForm 144
23 February 2026West Neal EOfficer5,000$608,58823 February 2026Wells Fargo Clearing ServicesCompensationForm 144
23 February 2026Donnan John MOfficer18,461$1.6 million23 February 2026R.W. BairdVesting of Equity AwardForm 144
23 February 2026Blain TiffanyOfficer15,231$1.9 million23 February 2026UBS Financial Services IncPSA; RSUForm 144
8 December 2025Jason WalshOfficer12,820$1.3 million8 December 2025UBS Financial Services IncESOPForm 144
21 November 2025Keith Harveyceo32,632$2.9 million21 November 2025MerrillRestricted Stock from Comp Plan; Restricted Stock from Comp Plan and Performance SharesForm 144
7 November 2025Blain A TiffanyOfficer8,656$812,9977 November 2025UBS Financial Services IncESPPForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Kaiser Aluminum Corp.: the company's filing index, each notice read from its own XML.

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