Sec Form 4 Filing - Parkinson Ray @ KAISER ALUMINUM CORP - 2016-03-05

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Parkinson Ray 2. Issuer Name and Ticker or Trading Symbol KAISER ALUMINUM CORP [ KALU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP - Advanced Engineering (Last) (First) (Middle) C/O KAISER ALUMINUM CORP. 3. Date of Earliest Transaction (MM/DD/YY) 03/05/2016 (Street) FOOTHILL RANCH, CA92610 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $0.01 per share 03/05/2016 A 1,933 ( 1 ) A $ 0 ( 1 ) 8,404 D Common Stock, par value $0.01 per share 03/05/2016 A 1,730 ( 2 ) A $ 0 ( 2 ) 10,134 D Common Stock, par value $0.01 per share 03/05/2016 F( 3 ) 703 D $ 80.46 9,431 D Common Stock, par value $0.01 per share 03/05/2016 F( 4 ) 835 D $ 80.46 8,596 D Common Stock, par value $0.01 per share 9,082 I By Family Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Options (Right to Buy) $ 80.01 ( 5 ) 04/03/2017 Common Stock, par value $0.01 per share 643 643 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Parkinson Ray C/O KAISER ALUMINUM CORP. FOOTHILL RANCH, CA92610 VP - Advanced Engineering Signatures /s/ Cherrie I. Tsai, with power of attorney for Raymond Parkinson 03/08/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Grant to the reporting person effective as of March 5, 2016, of restricted stock under the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan. All restrictions will lapse on March 5, 2019 or earlier upon the occurrence of certain specified circumstances. ( 2 )Shares earned upon the vesting on March 5, 2016 of certain performance shares granted to the reporting person in 2013 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. On March 5, 2016, the Registrant's compensation committee certified the performance shares payout multiplier based on the level of achievement by the Registrant of a certain pre-established performance goal for 2013 through 2015. ( 3 )Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2016 of the above-referenced performance shares. ( 4 )Shares withheld to satisfy the withholding tax obligations resulting from the vesting on March 5, 2016 of certain shares granted to the reporting person in 2013 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended. ( 5 )Stock option award granted on April 3, 2007 for 643 shares of common stock, with one-third of such options vested on each of the first, second and third anniversaries of the grant date.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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