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 OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Krouse Mark   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 - Human Resources (Last) (First) (Middle) C/O KAISER ALUMINUM CORP., 27422 PORTOLA PARKWAY, SUITE 200 3. Date of Earliest Transaction (Month/Day/Year) 12/30/2016 (Street) FOOTHILL RANCH, CA 92610 4. If Amendment, Date Original Filed(Month/Day/Year) 01/04/2017 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 12/30/2016   F   557 (1) D $ 77.69 3,742 (2) D   Common Stock, par value $0.01 per share               1,524 I Krouse Family Trust

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Krouse Mark C/O KAISER ALUMINUM CORP. 27422 PORTOLA PARKWAY, SUITE 200 FOOTHILL RANCH, CA 92610			VP - Human Resources

Signatures

/s/ Cherrie I. Tsai, with power of attorney for Mark Krouse		05/18/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Shares withheld to satisfy the withholding tax obligations resulting from the recognition of income with respect to the outstanding grant of restricted stock to the reporting person effective March 5, 2014 under the Kaiser Aluminum Corporation 2006 Equity and Performance Incentive Plan, as amended, upon the reporting person reaching age 65 on December 30, 2016 and such shares no longer being subject to a substantial risk of forfeiture for tax purposes.
(2)	The acquisition of 1,395 shares was inadvertently reported as a grant of restricted stock on the reporting person's prior Form 4. Such shares were acquired pursuant to a grant of restricted stock units. These restricted stock units have the same vesting terms as previously reported.
Remarks: 1,524 Shares reported on the Form 4, which this filing amends, and subsequent Form 4's filed on March 7, 2017, August 4, 2017 and March 7, 2018, as directly held by the reporting person were transferred to the Krouse Family Trust on June 6, 2016.

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