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As of ~~October 16, 2017,~~April 22, 2024, there were ~~16,903,791~~16,068,833 shares of common stock of the registrant outstanding.

COMMONLY USED OR DEFINED TERMS


Term	Definition
Adjusted EBITDA	Earnings before interest, taxes, depreciation and amortization adjusted for non-run-rate items
Aero/HS Products	2000, 7000 and certain 6000 series alloys products used in the Aerospace, Defense, Space and other end markets requiring high strength applications
Alloy(s)	Certain metals such as copper, zinc, magnesium, manganese and silicon added to primary aluminum to obtain certain attributes
AOCI	Accumulated other comprehensive income (loss)
ASU	Accounting Standards Update
Automotive Extrusions	Extruded aluminum products used in automotive applications
COGS	Cost of products sold, excluding depreciation and amortization
Form 10-Q	This Quarterly Report on Form 10-Q
GAAP	United States Generally Accepted Accounting Principles
GE Products	6000 series alloys products used in the General Engineering end markets
LME	London Metal Exchange
MWTP	Midwest Transaction Price is equal to the LME aluminum price plus a Midwest premium
Newark	Kaiser Aluminum manufacturing facility located in Heath, Ohio, a suburb of Newark, Ohio
OPEB	Other Post Retirement Benefit Plan (Refer to Note 3 – Employee Benefits)
Other products	Cast and aluminum products used in various non-strategic end markets
Packaging	3000 and 5000 series alloy products used in the beverage and food packaging end markets
Revolving Credit Facility	Revolving credit facility with Wells Fargo Bank, National Association, as administrative agent, and the other financial institutions party thereto
Salaried VEBA	Salaried Voluntary Employees' Beneficiary Association (Refer to Note 3 – Employee Benefits)
SEC	Securities and Exchange Commission
Senior Notes	Collectively, the fixed-rate unsecured notes we issued during the years ended December 31, 2019 and 2021 at the following interest rates and aggregate principal amounts, respectively: (i) 4.625% and $500.0 million; and (ii) 4.50% and $550.0 million
Term SOFR	Forward looking term rate based on the Secured Overnight Financing Rate
Trentwood	Kaiser Aluminum manufacturing facility located in Spokane Valley, Washington
Warrick	Kaiser Aluminum manufacturing facility located in Newburgh, Indiana, in the county of Warrick

TABLE OF CONTENTS

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

PART I – FINANCIAL INFORMATION

Item 1.Financial Statements

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

September 30, 2017 December 31, 2016
(In millions of dollars, except share and per share amounts)
ASSETS
Current assets:
Cash and cash equivalents $ 73.9
$ 55.2
Short-term investments 191.4
231.0
Receivables:
Trade receivables, net 138.2
137.7
Other 15.4
11.9
Inventories 212.2
201.6
Prepaid expenses and other current assets 31.5
18.5
Total current assets 662.6
655.9
Property, plant and equipment, net 557.8
530.9
Deferred tax assets, net 118.7
159.7
Intangible assets, net 25.3
26.4
Goodwill 18.8
37.2
Other assets 39.5
33.4
Total $ 1,422.7
$ 1,443.5
LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
Accounts payable $ 94.4
$ 75.8
Accrued salaries, wages and related expenses 39.0
49.1
Other accrued liabilities 43.3
�� 40.1
Total current liabilities 176.7
165.0
Net liabilities of Salaried VEBA 27.8
28.6
Deferred tax liabilities 3.3
3.3
Long-term liabilities 61.9
73.2
Long-term debt 369.4
368.7
Total liabilities 639.1
638.8
Commitments and contingencies – Note 8

Stockholders' equity:
Preferred stock, 5,000,000 shares authorized at both September 30, 2017 and December 31, 2016; no shares were issued and outstanding at September 30, 2017 and December 31, 2016 —
—
Common stock, par value $0.01, 90,000,000 shares authorized at both September 30, 2017 and at December 31, 2016; 22,392,946 shares issued and 16,905,368 shares outstanding at September 30, 2017; 22,332,732 shares issued and 17,651,461 shares outstanding at December 31, 2016 0.2
0.2
Additional paid in capital 1,052.8
1,047.4
Retained earnings 109.0
75.2
Treasury stock, at cost, 5,487,578 shares at September 30, 2017 and 4,681,271 shares at December 31, 2016, respectively (345.7 ) (281.4 )
Accumulated other comprehensive loss (32.7 ) (36.7 )
Total stockholders' equity 783.6
804.7
Total $ 1,422.7
$ 1,443.5


	As of March 31, 2024			As of December 31, 2023
	(In millions of dollars, except share and per share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	101.6		$	82.4
Receivables:
Trade receivables, net		341.4			325.2
Other		11.2			12.4
Contract assets		63.0			58.5
Inventories		471.3			477.2
Prepaid expenses and other current assets		34.6			34.5
Total current assets		1,023.1			990.2
Property, plant and equipment, net		1,055.0			1,052.1
Operating lease assets		30.5			32.6
Deferred tax assets, net		5.4			6.0
Intangible assets, net		48.9			50.0
Goodwill		18.8			18.8
Other assets		118.1			117.7
Total assets	$	2,299.8		$	2,267.4
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	273.8		$	252.7
Accrued salaries, wages and related expenses		45.5			53.0
Other accrued liabilities		65.4			64.3
Total current liabilities		384.7			370.0
Long-term portion of operating lease liabilities		27.4			29.2
Pension and other postretirement benefits		75.6			76.8
Net liabilities of Salaried VEBA		3.8			3.8
Deferred tax liabilities		19.5			13.9
Long-term liabilities		83.6			81.7
Long-term debt, net		1,040.3			1,039.8
Total liabilities		1,634.9			1,615.2
Commitments and contingencies – Note 7
Stockholders’ equity:
Preferred stock, 5,000,000 shares authorized at both March 31, 2024 and December 31, 2023; no shares were issued and outstanding at March 31, 2024 and December 31, 2023		—			—
Common stock, par value $0.01, 90,000,000 shares authorized at both March 31, 2024 and December 31, 2023; 22,891,318 shares issued and 16,056,032 shares outstanding at March 31, 2024; 22,851,077 shares issued and 16,015,791 shares outstanding at December 31, 2023		0.2			0.2
Additional paid in capital		1,107.5			1,104.7
Retained earnings		22.1			10.1
Treasury stock, at cost, 6,835,286 shares at both March 31, 2024 and December 31, 2023		(475.9	)		(475.9	)
Accumulated other comprehensive income		11.0			13.1
Total stockholders’ equity		664.9			652.2
Total liabilities and stockholders' equity	$	2,299.8		$	2,267.4

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

STATEMENTS OF CONSOLIDATED INCOME (UNAUDITED)

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
(In millions of dollars, except share and per share amounts)
Net sales $ 332.8
$ 320.6
$ 1,044.4
$ 998.7
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items 267.2
254.7
822.7
767.1
Lower of cost or market inventory write-down —
—
—
4.9
Unrealized gain on derivative instruments (10.8 ) (2.0 ) (14.0 ) (16.9 )
Depreciation and amortization 10.2
9.0
29.3
26.7
Selling, general, administrative, research and development:
Selling, general, administrative, research and development 24.7
25.6
74.7
79.2
Net periodic postretirement benefit cost relating to Salaried VEBA 1.2
0.8
3.4
2.5
Loss (gain) on removal of Union VEBA net assets – Note 6 0.5
—
(0.8 ) (0.1 )
Total selling, general, administrative, research and development 26.4
26.4
77.3
81.6
Goodwill impairment —
—
18.4
—
Other operating charges, net

—
2.7
—
2.8
Total costs and expenses 293.0
290.8
933.7
866.2
Operating income 39.8
29.8
110.7
132.5
Other (expense) income:
Interest expense (5.3 ) (5.5 ) (16.4 ) (14.7 )
Other income (expense), net – Note 13 1.5
—
3.1
(10.4 )
Income before income taxes 36.0
24.3
97.4
107.4
Income tax provision (16.1 ) (9.4 ) (36.8 ) (40.2 )
Net income $ 19.9
$ 14.9
$ 60.6
$ 67.2

Net income per common share:
Basic $ 1.18
$ 0.84
$ 3.55
$ 3.76
Diluted $ 1.16
$ 0.82
$ 3.49
$ 3.70
Weighted-average number of common shares outstanding (in thousands):
Basic 16,834
17,841
17,072
17,858
Diluted 17,160
18,175
17,363
18,181

Dividends declared per common share $ 0.50
$ 0.45
$ 1.50
$ 1.35



	Quarter Ended March 31,
	2024			2023
	(In millions of dollars, except share and per share amounts)
Net sales	$	737.5		$	807.6
Costs and expenses:
Cost of products sold, excluding depreciation and amortization		642.9			731.1
Depreciation and amortization		28.8			26.3
Selling, general, administrative, research and development		32.6			29.7
Restructuring costs		0.1			1.4
Other operating charges, net		0.4			—
Total costs and expenses		704.8			788.5
Operating income		32.7			19.1
Other (expense) income:
Interest expense		(11.5	)		(11.9	)
Other income, net – Note 9		10.9			13.6
Income before income taxes		32.1			20.8
Income tax provision		(7.5	)		(4.9	)
Net income	$	24.6		$	15.9

Net income per common share:
Basic	$	1.53		$	1.00
Diluted	$	1.51		$	0.99
Weighted-average number of common shares outstanding (in thousands):
Basic		16,027			15,940
Diluted		16,230			16,096

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (UNAUDITED)

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
(In millions of dollars)
Net income $ 19.9
$ 14.9
$ 60.6
$ 67.2
Other comprehensive income, net of tax – Note 14:
Salaried VEBA and defined benefit pension plan 0.8
0.7
2.5
2.2
Available for sale securities 0.3
0.3
0.6
0.6
Other 0.5
0.1
0.9
0.1
Other comprehensive income, net of tax 1.6
1.1
4.0
2.9
Comprehensive income $ 21.5
$ 16.0
$ 64.6
$ 70.1


	Quarter Ended March 31,
	2024			2023
	(In millions of dollars)
Net income	$	24.6		$	15.9
Other comprehensive (loss) income, net of tax – Note 8:
Defined benefit plans		(0.5	)		0.7
Cash flow hedges		(1.6	)		(1.8	)
Other comprehensive loss, net of tax		(2.1	)		(1.1	)
Comprehensive income	$	22.5		$	14.8

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

~~STATEMENT~~

STATEMENTS OF CONSOLIDATED STOCKHOLDERS'’ EQUITY (UNAUDITED)

Quarter Ended March 31, 2024


	Common Shares Outstanding1			Common Stock		Additional Paid in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income			Total
	(In millions of dollars, except share and per share amounts)
BALANCE, December 31, 2023		16,015,791		$	0.2	$	1,104.7		$	10.1		$	(475.9	)	$	13.1		$	652.2
Net income		—			—		—			24.6			—			—			24.6
Other comprehensive loss, net of tax		—			—		—			—			—			(2.1	)		(2.1	)
Common shares issued (including impacts from Long-Term Incentive programs)		56,416			—		—			—			—			—			—
Cancellation of shares to cover tax withholdings upon common shares issued		(16,175	)		—		(1.2	)		—			—			—			(1.2	)
Cash dividends declared2		—			—		—			(12.6	)		—			—			(12.6	)
Amortization of unearned equity compensation		—			—		4.0			—			—			—			4.0
BALANCE, March 31, 2024		16,056,032		$	0.2	$	1,107.5		$	22.1		$	(475.9	)	$	11.0		$	664.9

At March 31, 2024, 345,130 shares were available for awards under the Kaiser Aluminum Corporation 2021 Equity and Incentive Compensation Plan.

Dividends declared per common share were $0.77 for the quarter ended March 31, 2024.

Common
Shares
Outstanding

Common
Stock

Additional
Paid in Capital

Retained
Earnings

Treasury
Stock

Accumulated
Other
Comprehensive
Loss
Total
(In millions of dollars, except share and per share amounts)
BALANCE, December 31, 2016 17,651,461
$ 0.2
$ 1,047.4
$ 75.2
$ (281.4 ) $ (36.7 ) $ 804.7
Net income —
—
—
60.6
—
—
60.6
Other comprehensive income, net of tax —
—
—
—
—
4.0
4.0
Issuance of non-vested shares to non-employee directors 11,817
—
—
—
—
—
—
Issuance of common shares to non-employee directors 2,282
—
0.2
—
—
—
0.2
Issuance of common shares to employees upon vesting of restricted stock units and performance shares 102,737
—
—
—
—
—
—
Cancellation of employee non-vested shares (427 ) —
—
—
—
—
—
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (56,195 ) —
(4.5 ) —
—
—
(4.5 )
Repurchase of common stock (806,307 ) —
—
—
(64.9 ) —
(64.9 )
Cancellation of treasury stock —
—
(0.2 ) (0.4 ) 0.6
—
—
Cash dividends on common stock and restricted shares and dividend equivalents on restricted stock units and performance shares —
—
—
(26.4 ) —
—
(26.4 )
Amortization of unearned equity compensation —
—
9.9
—
—
—
9.9
BALANCE, September 30, 2017 16,905,368
$ 0.2
$ 1,052.8
$ 109.0
$ (345.7 ) $ (32.7 ) $ 783.6

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

STATEMENTS OF CONSOLIDATED ~~CASH FLOWS~~STOCKHOLDERS’ EQUITY CONTINUED (UNAUDITED)

Quarter Ended March 31, 2023


	Common Shares Outstanding			Common Stock		Additional Paid in Capital			Retained Earnings			Treasury Stock			Accumulated Other Comprehensive Income			Total
	(In millions of dollars, except share and per share amounts)
BALANCE, December 31, 2022		15,940,756		$	0.2	$	1,090.4		$	13.3		$	(475.9	)	$	3.2		$	631.2
Net income		—			—		—			15.9			—			—			15.9
Other comprehensive loss, net of tax		—			—		—			—			—			(1.1	)		(1.1	)
Common shares issued (including impacts from Long-Term Incentive programs)		49,128			—		—			—			—			—			—
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares		(15,848	)		—		(1.3	)		—			—			—			(1.3	)
Cash dividends declared1		—			—		—			(12.5	)		—			—			(12.5	)
Amortization of unearned equity compensation		—			—		3.4			—			—			—			3.4
BALANCE, March 31, 2023		15,974,036		$	0.2	$	1,092.5		$	16.7		$	(475.9	)	$	2.1		$	635.6

Dividends declared per common share were $0.77for the quarter ended March 31, 2023.

Nine Months Ended
September 30,
2017 2016
(In millions of dollars)
Cash flows from operating activities:
Net income $ 60.6
$ 67.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment 28.3
25.5
Amortization of definite-lived intangible assets 1.0
1.2
Amortization of debt discount and debt issuance costs 0.9
0.8
Deferred income taxes 38.6
40.7
Non-cash equity compensation 10.1
8.8
Lower of cost or market inventory write-down —
4.9
Gain on sale of available for sale securities (1.8 ) —
Non-cash unrealized gain on derivative instruments (14.0 ) (16.9 )
Loss on extinguishment of debt —
11.1
Non-cash intangible asset impairment charge 18.4
2.6
(Gain) loss on disposition of property, plant and equipment (0.4 ) 0.2
Non-cash net periodic postretirement benefit cost relating to Salaried VEBA 3.4
2.5
Other non-cash changes in assets and liabilities (0.8 ) 1.1
Changes in operating assets and liabilities:
Trade and other receivables (4.0 ) (26.7 )
Inventories, excluding lower of cost or market write-down (10.6 ) (8.9 )
Prepaid expenses and other current assets (1.8 ) (0.9 )
Accounts payable 21.6
0.8
Accrued liabilities 0.9
27.9
Annual variable cash contributions to VEBAs (20.0 ) (19.5 )
Long-term assets and liabilities, net 1.1
(15.0 )
Net cash provided by operating activities 131.5
107.4
Cash flows from investing activities¹:

Capital expenditures (56.1 ) (57.4 )
Purchase of available for sale securities (196.0 ) (201.1 )
Proceeds from disposition of available for sale securities 237.2
30.0
Proceeds from disposal of property, plant and equipment 0.6
—
Net cash used in investing activities (14.3 ) (228.5 )
Cash flows from financing activities¹:

Repayment of principal and redemption premium of 8.25% Senior Notes —
(206.0 )
Issuance of 5.875% Senior Notes —
375.0
Cash paid for debt issuance costs —
(6.8 )
Proceeds from stock option exercises —
1.0
Repayment of capital lease (0.2 ) (0.1 )
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (4.5 ) (2.8 )
Repurchase of common stock (66.7 ) (13.6 )

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~STATEMENTS OF CONSOLIDATED CASH FLOWS (UNAUDITED)~~

Nine Months Ended
September 30,
2017 2016
Cash dividends and dividend equivalents paid (26.4 ) (24.4 )
Net cash (used in) provided by financing activities (97.8 ) 122.3
Net increase in cash, cash equivalents and restricted cash during the period 19.4
1.2
Cash, cash equivalents and restricted cash at beginning of period 67.7
83.7
Cash, cash equivalents and restricted cash at end of period $ 87.1
$ 84.9

~~____________~~


¹	~~See Note 12 for the supplemental disclosure on non-cash transactions.~~

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

STATEMENTS OF CONSOLIDATED CASH FLOWS (UNAUDITED)


	Quarter Ended March 31,
	2024			2023
	(In millions of dollars)
Cash flows from operating activities1:
Net income	$	24.6		$	15.9
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation of property, plant and equipment		27.7			24.9
Amortization of definite-lived intangible assets		1.1			1.4
Amortization of debt premium and debt issuance costs		0.6			0.5
Amortization of cloud computing implementation costs		0.3			0.4
Deferred income taxes		6.8			4.1
Non-cash equity compensation		4.0			3.4
Non-cash asset impairment charge2		4.2			—
Loss (gain) on disposition of property, plant and equipment		0.2			(15.0	)
Bad debt expense		0.1			—
Non-cash postretirement defined benefit plan cost		1.5			3.1
Changes in operating assets and liabilities:
Trade and other receivables		(15.1	)		(36.9	)
Contract assets		(4.5	)		5.7
Inventories		4.4			(12.3	)
Prepaid expenses and other current assets		(1.7	)		(1.3	)
Accounts payable		18.6			(22.6	)
Accrued liabilities		(5.2	)		10.3
Annual variable cash contributions to Salaried VEBA		(1.1	)		—
Long-term assets and liabilities, net		(3.2	)		(1.9	)
Net cash provided by (used in) operating activities		63.3			(20.3	)
Cash flows from investing activities1:
Capital expenditures		(30.0	)		(41.1	)
Proceeds from sale of equity securities		0.1			—
Proceeds from disposition of property, plant and equipment		—			15.2
Net cash used in investing activities		(29.9	)		(25.9	)
Cash flows from financing activities1:
Borrowings under the Revolving Credit Facility		—			119.5
Repayment of borrowings under the Revolving Credit Facility		—			(80.1	)
Repayment of finance lease		(0.4	)		(0.6	)
Cancellation of shares to cover tax withholdings upon common shares issued		(1.2	)		(1.3	)
Cash dividends and dividend equivalents paid		(12.6	)		(12.5	)
Net cash (used in) provided by financing activities		(14.2	)		25.0
Net increase (decrease) in cash, cash equivalents and restricted cash during the period		19.2			(21.2	)
Cash, cash equivalents and restricted cash at beginning of period		100.7			71.3
Cash, cash equivalents and restricted cash at end of period	$	119.9		$	50.1

See Note 12 for supplemental cash flow information.

Non-cash asset impairment charge for the quarter ended March 31, 2024 is comprised of: (i) a $3.8 million inventory write-down related to certain alloying metals, and (ii) a $0.4 million impairment charge on land held for sale.

The accompanying notes to interim consolidated financial statements are an integral part of these statements.

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED

NOTES INDEX

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS – UNAUDITED

1. ~~Summary~~Basis of ~~Significant~~Presentation and Recent Accounting ~~Policies~~

Pronouncements

This ~~Quarterly Report on~~ Form 10-Q ~~(this "Report")~~ should be read in conjunction with the ~~Company's~~Company’s Annual Report on Form 10-K for the year ended December 31, ~~2016.~~2023. Unless the context otherwise requires, references in these notes to interim consolidated financial statements - unaudited to ~~"Kaiser Aluminum Corporation," "we," "us," "our," "the Company"~~“Kaiser,” “we,” “us,” “our,” “the Company” and ~~"our Company"~~“our Company” refer collectively to Kaiser Aluminum Corporation and its subsidiaries.

~~Organization and Nature of Operations.~~ Kaiser Aluminum Corporation specializes in the production of semi-fabricated specialty aluminum mill products, such as aluminum plate and sheet and extruded and drawn products, for the following end market applications: aerospace and high strength ("Aero/HS products"), automotive applications ("Automotive Extrusions"), general engineering ("GE products") and other industrial ("Other products"). Our business is organized into one operating segment, Fabricated Products. See Note 11 for additional information regarding our reportable segment and business unit.

Principles of Consolidation and Basis of Presentation. The accompanying unaudited consolidated financial statements include the accounts of our wholly owned subsidiaries and are prepared in accordance with ~~United States generally accepted accounting principles ("GAAP")~~GAAP and the rules and regulations of the ~~Securities and Exchange Commission ("SEC")~~SEC applicable for interim periods and, therefore, do not include all information and footnotes required by GAAP for complete financial statements. In ~~management's~~management’s opinion, all adjustments (which include normal recurring adjustments) considered necessary for a fair presentation have been included. We have reclassified certain items in prior periods to conform to current classifications. The results of operations for our interim periods are not necessarily indicative of the results of operations that may be achieved for the entire ~~2017~~2024 fiscal year. The financial information as of December 31, ~~2016~~2023 is derived from our audited consolidated financial statements and footnotes included in our Annual Report on Form 10-K for the year ended December 31, ~~2016.~~2023.

Use of Estimates in the Preparation of Financial Statements. The preparation of financial statements in accordance with GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities known to exist as of the date the financial statements are published and the reported amounts of revenues and expenses during the reporting period. Uncertainties with respect to such estimates and assumptions are inherent in the preparation of our consolidated financial statements; accordingly, it is possible that the actual results could differ from these estimates and assumptions, which could have a material effect on the reported amounts of our consolidated financial position and results of operations.

Accounting Pronouncements Issued But Not Yet Adopted

Disclosure Improvements. In October 2023, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2023-06 (“ASU 2023-06”), Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative. The guidance amends GAAP to reflect updates and simplifications to certain disclosure requirements referred to the FASB by the SEC. The amendments in ASU 2023-06 will become effective on the date which the SEC’s removal of the related disclosure becomes effective. If by June 30, 2027, the SEC does not remove the related disclosure, the pending amendment will be removed from ASC 2023-06 and it will not be effective. We do not expect this ASU to have a material impact on our consolidated financial statements.

Segment Reporting. In November 2023, the FASB issued ASU No. 2023-07 (“ASU 2023-07”), Improvements to Reportable Segment Disclosures. The guidance primarily will require enhanced disclosures about significant segment expenses. All disclosure requirements under ASU 2023-07 and existing segment disclosures in ASC 280, Segment Reporting are also required for public entities with a single reportable segment. The amendments in ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted, and are to be applied on a retrospective basis. We are evaluating the impact of the standard on our reporting disclosures.

Income Taxes. In December 2023, the FASB issued ASU No. 2023-09 (“ASU 2023-09”), Improvements to Income Tax Disclosures. The guidance is intended to improve income tax disclosure requirements by requiring (i) consistent categories and greater disaggregation of information in the rate reconciliation and (ii) the disaggregation of income taxes paid by jurisdiction. The guidance makes several other changes to the income tax disclosure requirements. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted, and is required to be applied prospectively with the option of retrospective application. We are evaluating the impact of the standard on our income tax disclosures.

~~Inventories.~~ ~~Inventories are stated at the lower of cost or market value. On~~

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KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS – UNAUDITED

2. Supplemental Balance Sheet Information


	As of March 31, 2024			As of December 31, 2023
	(In millions of dollars)
Trade Receivables, Net
Billed trade receivables	$	342.0		$	325.8
Allowance for doubtful receivables		(0.6	)		(0.6	)
Trade receivables, net	$	341.4		$	325.2

Inventories1
Finished products	$	81.0		$	89.3
Work-in-process		209.5			210.8
Raw materials		165.0			161.5
Operating supplies		15.8			15.6
Inventories	$	471.3		$	477.2

Property, Plant and Equipment, Net
Land and improvements	$	37.2		$	38.0
Buildings and leasehold improvements		240.0			238.4
Machinery and equipment		1,272.8			1,265.3
Construction in progress		193.8			173.7
Property, plant and equipment, gross		1,743.8			1,715.4
Accumulated depreciation and amortization		(690.3	)		(663.7	)
Land held for sale		1.5			0.4
Property, plant and equipment, net	$	1,055.0		$	1,052.1

Other Assets
Assets to be conveyed associated with Warrick acquisition	$	56.8		$	56.8
Restricted cash – Note 12		18.3			18.3
Long-term replacement parts		17.2			16.7
Other		25.8			25.9
Other assets	$	118.1		$	117.7

Other Accrued Liabilities
Uncleared cash disbursements	$	16.8		$	15.7
Accrued income taxes and other taxes payable		13.1			9.5
Accrued annual contribution to Salaried VEBA		—			1.1
Accrued interest		10.3			9.9
Short-term environmental accrual – Note 7		0.5			2.8
Current operating lease liabilities		7.7			8.0
Current finance lease liabilities		2.3			2.1
Other – Note 5		14.7			15.2
Other accrued liabilities	$	65.4		$	64.3

Long-Term Liabilities
Workers' compensation accrual	$	29.2		$	29.9
Long-term environmental accrual – Note 7		15.6			14.2
Other long-term liabilities		38.8			37.6
Long-term liabilities	$	83.6		$	81.7

At March 31, 2016, we recorded a lower of cost or market inventory write-down of $4.9 million as a result of a decrease in our net realizable value of inventory. The net realizable value reflected commitments as of that date from customers to purchase our inventory at prices that exceeded the Midwest Transaction Price ("Midwest Price"), which reflects the primary aluminum supply/demand dynamics in North America, reduced by an approximate normal profit margin. There were no additional lower of cost or market inventory adjustments since the quarter ended March 31, 2016.

~~Finished products, work-in-process~~2024 and ~~raw material inventories are stated on the last-in, first-out ("LIFO") basis. At September 30, 2017, the current cost of inventory exceeded its stated LIFO value by $12.5 million. At~~ December 31, ~~2016, the stated LIFO value of our inventory represented its net realizable value (less a normal profit margin) and exceeded~~2023, the current cost of our inventory exceeded its stated last-in, first-out (“LIFO”) value by $8.5 million. Other inventories are stated on the first-in, first-out basis and consist of operating supplies, which are materials and supplies to be consumed during the production process. Inventory costs consist of material, labor and manufacturing overhead, including depreciation. Abnormal costs, such as idle facility expenses, freight, handling costs and spoilage, are accounted for as current period charges. All of our inventories at September 30, 2017 and December 31, 2016 were included in the Fabricated Products segment (see Note 2 for the components of inventories).

~~Replacement Parts.~~ Replacement parts consist of preventative maintenance and capital spare parts, which are stated on the first-in, first-out basis. Replacement parts are recorded within Prepaid expenses and other current assets or Other assets depending on whether or not the expected utilization of the replacement parts is to occur within the current operating cycle.

~~Property, Plant and Equipment, Net.~~ Property, plant and equipment, net is recorded at cost and includes construction in progress (see Note 2). Interest related to the construction of qualifying assets is capitalized as part of the construction costs. The amount of interest expense capitalized as construction in progress was $0.7$42.6 million and ~~$0.6~~$56.0 million, ~~during the quarters ended September 30, 2017 and September 30, 2016,~~ respectively. ~~The amount of interest expense capitalized as construction in~~

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NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

~~progress~~

3. Employee Benefits

Deferred Compensation Plan

Assets of our deferred compensation plan are included in Other assets, classified within Level 1 of the fair value hierarchy and are measured and recorded at fair value based on their quoted market prices. The fair value of these assets at March 31, 2024 and December 31, 2023 was ~~$1.9~~$11.3 million and ~~$2.4~~$11.1 million, ~~during~~respectively. Assets in the ~~nine months ended September 30, 2017~~trust are held in various investment funds at certain registered investment companies and ~~September 30, 2016, respectively.~~are accounted for as equity investments with changes in fair value recorded within Other income, net (see Note 9). Offsetting liabilities relating to the deferred compensation plan are included in Other accrued liabilities and Long-term liabilities.

Short-Term Incentive Plans (“STI Plans”)

As of March 31, 2024, we had a liability of $6.1 million recorded within Accrued salaries, wages and related expenses for estimated probable future payments under the 2024 STI Plans.

Postretirement Benefit Plans

The following table presents the total expense related to all postretirement benefit plans (in millions of dollars):


	Quarter Ended March 31,
	2024		2023
Defined contribution plans1	$	5.8	$	5.8
Deferred compensation plan2		0.7		0.2
Multiemployer pension plans1		1.5		1.4
Net periodic postretirement benefit cost relating to defined benefit plans2,3		1.5		3.1
Total	$	9.5	$	10.5

Substantially all of these charges related to employee benefits are in COGS with the remaining balance in Selling, general, administrative, research, and development (“SG&A and R&D”) within our Statements of Consolidated Income.

~~Depreciation is computed using~~2.

Deferred compensation plan expense and the ~~straight-line method at rates based~~current service cost component of Net periodic postretirement benefit cost relating to Salaried VEBA are included within our Statements of Consolidated Income in SG&A and R&D for all periods presented. All other components of Net periodic postretirement benefit cost relating to Salaried VEBA are included within Other income, net, on our Statements of Consolidated Income.

The current service cost component of Net periodic postretirement benefit cost relating to both the ~~estimated useful lives~~pension plans and the OPEB plan are included within our Statements of Consolidated Income in COGS for all periods presented. All other components of Net periodic postretirement benefit cost relating to both the ~~various classes~~pension plans and the OPEB plan are included within Other income, net, on our Statements of ~~assets. Capital lease assets~~Consolidated Income.

Components of Net Periodic Postretirement Benefit Cost. Our results of operations included the following impacts associated with the defined benefit plans: (i) a charge for service rendered by employees; (ii) a charge for accretion of interest; (iii) a benefit for the expected return on plan assets; (iv) amortization of prior service costs (credits) associated with plan amendments; and ~~leasehold improvements are depreciated~~(v) amortization of net actuarial differences.

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The following table presents the components of Net periodic postretirement benefit cost (credit) relating to the defined benefit plans (in millions of dollars):


	Pension Plans						OPEB						Salaried VEBA
	Quarter Ended						Quarter Ended						Quarter Ended
	March 31						March 31						March 31
	2024			2023			2024			2023			2024			2023
Service cost	$	0.9		$	1.0		$	0.3		$	0.3		$	—		$	—
Interest cost		0.4			0.3			0.8			0.8			0.5			0.7
Expected return on plan assets		(0.3	)		(0.3	)		—			—			(0.5	)		(0.6	)
Amortization of prior service cost (credit)1		0.2			—			—			—			(0.5	)		1.2
Amortization of net actuarial gain		—			—			(0.3	)		(0.3	)		—			—
Total net periodic postretirement benefit cost (credit)	$	1.2		$	1.0		$	0.8		$	0.8		$	(0.5	)	$	1.3

We amortize prior service cost on a straight-line basis over the ~~shorter~~average remaining years of service of the ~~estimated useful lives~~active plan participants.

Pension Plan Contributions. During the quarter ended March 31, 2024, we contributed $2.5 million to the pension plans. We expect to make further contributions of approximately $3.4 million to the pension plans during the remainder of 2024.

4. Restructuring

2022 Restructuring Plan. During 2022, we relocated our corporate headquarters from Foothill Ranch, California (“Foothill Ranch”) to Franklin, Tennessee (“Franklin”). In conjunction with the relocation, we initiated a restructuring plan during the quarter ended December 31, 2022, which consisted primarily of employee retention benefits aimed at incentivizing Foothill Ranch employees to assist with the buildout of the ~~assets or~~new corporate function in Franklin (“2022 Restructuring Plan”). We incurred total restructuring costs of $7.4 million related to the ~~lease term. Depreciation expense is not included~~2022 Restructuring Plan, which consisted of employee-related costs and office rent within Restructuring costs in ~~Cost~~our Statements of ~~products sold, excluding depreciation~~Consolidated Income. All costs associated with the 2022 Restructuring Plan have been incurred as of March 31, 2024.

The following table summarizes activity relating to the 2022 Restructuring Plan liabilities (in millions of dollars):


	Quarter Ended March 31,
	2024
Beginning Balance	$	1.2
Restructuring costs		0.1
Costs paid or otherwise settled1		(1.2	)
Ending Balance	$	0.1

Cash paid during the quarter ended March 31, 2024 was $1.1 million.

5. Derivatives, Hedging Programs and ~~amortization~~Other Financial Instruments

Overview.In conducting our business, we enter into derivative transactions, including forward contracts and ~~other items, but is included in Depreciation and amortization.~~

~~We classify assets as held for~~options, to limit our exposure to: (i) metal price risk related to our sale ~~only when an asset is being actively marketed and expected to sell within 12 months. Assets held for sale are initially measured at the lesser~~ of ~~the assets' carrying amount~~fabricated aluminum products and the ~~fair value less costs to sell.~~

~~Self Insurance~~purchase of ~~Workers' Compensation~~metal, including primary, rolling ingot and ~~Employee Healthcare Liabilities. We self-insure the majority of the costs of workers' compensation benefits~~scrap, or recycled, aluminum, our main raw material, and employee healthcare benefits and rely on insurance coverage to protect us from large losses on individual claims. Workers' compensation liabilities are based on a combination of estimates for: (i) incurred-but-not-reported claims and (ii) the ultimate expense of incurred claims. Such estimates are based on judgment, using our historical claims data and information and analysis provided by actuarial and claims advisors, our insurance carriers and other professionals. Our undiscounted workers' compensation liabilities were estimated at $26.6 million and $26.8 million for the periods ended September 30, 2017 and December 31, 2016, respectively. However, we accountcertain alloys used as raw material for our ~~workers' compensation accrued liability on a discounted basis, using a discount rate~~fabrication operations; (ii) energy price risk relating to fluctuating prices of ~~2.00% at both September 30, 2017~~natural gas and ~~December 31, 2016. Accrued liabilities for employee healthcare benefits, which are estimates of unpaid incurred medical~~electricity used in our production processes; and ~~prescription drug costs as provided by our healthcare administrators, were $3.3 million and $3.6 million as of September 30, 2017 and December 31, 2016, respectively.~~

~~Derivative Financial Instruments.~~ Consistent with guidelines established by management and approved by our Board of Directors, we use derivative financial instruments to mitigate our exposure to changes in the market price of aluminum, alloying metals and energy and, to a lesser extent,(iii) foreign currency ~~exchange rates.~~requirements with respect to cash commitments for equipment purchases and/or other agreements denominated in foreign currency. We do not use derivative financial instruments for trading or other speculative purposes. Hedging transactions are executed centrally on behalf of all of our operations to minimize transaction costs, monitor consolidated net exposures and allow for increased responsiveness to changes in market factors.

Our derivative activities are overseen by a committee (“Hedging Committee”), which is composed of our Chief Executive Officer, Chief Financial Officer, Chief Accounting Officer, Treasurer, Executive Vice President of Manufacturing and other officers and

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NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS – UNAUDITED

employees selected by the Chief Executive Officer.The Hedging Committee meets regularly to review commodity price exposures, derivative positions and strategy. Management reviews the scope of the Hedging Committee’s activities with our Board of Directors.

We ~~reflect the fair value of~~are exposed to counterparty credit risk on all of our derivative instruments, which we manage by monitoring the credit quality of our counterparties and allocating our hedging positions among multiple counterparties to limit exposure to any single entity. Our counterparties are major investment grade financial institutions or trading companies, and our hedged transactions are governed by negotiated International Swaps and Derivatives Association Master Agreements, which generally require collateral to be posted by our counterparties above specified credit thresholds which may adjust up or down, based on increases or decreases in counterparty credit ratings. As a result, we believe the risk of loss is remote and contained. The aggregate fair value of our ~~Consolidated Balance Sheets (see Note 9). The carrying values~~derivative instruments that were in a net liability position was $1.3 million and $1.0 million at March 31, 2024 and December 31, 2023, respectively, and we had no collateral posted as of ~~hedges settling within one year are included in Prepaid expenses~~those dates.

In addition, our firm-price customer sales commitments create incremental customer credit risk related to metal price movements. Under certain circumstances, we mitigate this risk by periodically requiring cash collateral to be posted by our customers, which we classify as deferred revenue and ~~other current assets or~~include as a component of Other accrued liabilities. ~~Carrying values for~~We had no material cash collateral posted by our customers at both March 31, 2024 and December 31, 2023.

Cash Flow Hedges

We designate as cash flow hedges ~~settling beyond one year are included in Other assets or Long-term liabilities.~~

We do not meet the documentation requirements for hedge (deferral) accounting related to aluminum and energy derivatives. Accordingly, we record unrealized gain or loss associated with these hedges in the Statements of Consolidated Income within Unrealized gain on derivative instruments. As such derivatives settle, we reverse any previously recorded unrealized gain or loss associated with these hedges and record the realized gain or loss within Cost of products sold, excluding depreciation and amortization and other items.

~~Forward~~forward swap contracts for ~~zinc~~aluminum and ~~copper ("Alloy Hedges")~~energy. Additionally, in the fourth quarter of 2023, we adopted this treatment for Alloying Metals used in our fabrication ~~operations are designated and qualify~~operations. We also designate as cash flow ~~hedges.~~hedges foreign currency forward contracts for equipment and services for which payments are due in foreign currency. Unrealized ~~gain~~gains and ~~loss~~losses associated with ~~the Alloy Hedges~~our cash flow hedges are deferred in Other comprehensive ~~income,~~loss, net of ~~tax. As Alloy Hedges~~tax, and reclassified to COGS when such hedges settle ~~we reverse any unrealized~~or when it is probable that the original forecasted transactions will not occur by the end of the originally specified time period. See Note 8 for the total amount of gain or loss ~~previously~~on derivative instruments designated and qualifying as cash flow hedging instruments that was reported in AOCI, as well as the related reclassifications into earnings and tax effects. Cumulative gains and losses related to cash flow hedges are reclassified out of AOCI and recorded within ~~Other comprehensive income, net~~COGS when the associated hedged commodity purchases impact earnings.

Aluminum Hedges. Our pricing of ~~tax associated with settling Alloy Hedges~~fabricated aluminum products is generally intended to lock in our Conversion Revenue (representing our value added from the fabrication process) and ~~record the realized gain or loss within Cost~~to pass through aluminum price fluctuations to our customers. For some of our higher margin products sold ~~excluding depreciation~~on a spot basis, the pass through of aluminum price movements can sometimes lag by as much as several months, with a favorable impact to us when aluminum prices decline and ~~amortization~~an adverse impact to us when aluminum prices increase. Additionally, in certain instances, we enter into firm-price arrangements with our customers for stipulated volumes to be delivered in the future. Because we generally purchase primary and ~~other items.~~secondary aluminum on a floating price basis, the lag in passing through aluminum price movements to customers on some of our higher margin products sold on a spot basis and the volume that we have committed to sell to our customers under a firm-price arrangement create aluminum price risk for us. We use third-party hedging instruments to limit exposure to aluminum price risk related to the aluminum pass through lag on some of our products and firm-price customer sales contracts.

Alloying Metals Hedges. We are exposed to the risk of fluctuating prices for alloying metals used as raw materials in our fabrication operations. We, from time to time, in the ordinary course of business, enter into hedging transactions and/or physical delivery commitments with third parties to mitigate our risk from fluctuations in certain alloying metals prices that are not passed through pursuant to the terms of our customer contracts.

Energy Hedges. We are exposed to the risk of fluctuating prices for natural gas and electricity. We, from time to time, in the ordinary course of business, enter into hedging transactions and/or firm price physical delivery commitments with third parties to mitigate our risk from fluctuations in natural gas and electricity prices that are not passed through pursuant to the terms of our customer contracts.

Foreign Currency Hedges. We are exposed to foreign currency exchange risk related to certain equipment and service agreements with vendors for which payments are due in foreign currency. We, from time to time, in the ordinary course of business, use foreign currency forward contracts in order to mitigate the exposure to currency exchange rate fluctuations related to these purchases.

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NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS – UNAUDITED

Non-Designated Hedges of Operational Risks

From time to time, we enter into commodity and foreign currency forward contracts that are not designated as hedging instruments to ~~protect the value of anticipated~~mitigate certain short‑term impacts, as identified. The gain or loss on these commodity and foreign currency ~~expenses associated with cash commitments for equipment purchases. Some of these derivative contracts qualify for cash flow hedge accounting~~derivatives is recognized within COGS and are designated as cash flow hedges. The remainder are non-designated hedges. Both realized and unrealized gains and losses of foreign currency forward contracts designated as cash flow hedges are deferred in Accumulated other comprehensive loss and, over the period that the underlying equipment is depreciated, realized gains and losses are recorded as an adjustment to depreciation expense. For non-designated foreign currency forward contracts, gains and losses (both unrealized and realized) are reflected as an increase or reduction in Other income, ~~(expense), net.~~

~~Fair Value Measurements.~~ ~~We apply the fair value hierarchy established by GAAP for the recognition~~net, respectively. There were no non-designated hedges at both March 31, 2024 and ~~measurement~~December 31, 2023.

Notional Amount of certain financial assets and liabilities. An asset or liability's fair value classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. In determining fair value, we utilize valuation techniques

Derivative Contracts

The following table summarizes our derivative positions at March 31, 2024:


Aluminum	Maturity Period	Notional Amount of Contracts (mmlbs)
Fixed price purchase contracts for LME	April 2024 through December 2025		74.5
Fixed price sale contracts for LME	April 2024		7.0
Fixed price purchase contracts for MWTP	April 2024 through December 2025		60.5
Fixed price sale contracts for MWTP	April 2024 through September 2024		26.7


Alloying Metals	Maturity Period	Notional Amount of Contracts (mmlbs)
Fixed price purchase contracts	April 2024 through December 2025		10.0


Natural Gas	Maturity Period	Notional Amount of Contracts (mmbtu)
Fixed price purchase contracts	April 2024 through December 2026		3,880,000


Electricity	Maturity Period	Notional Amount of Contracts (Mwh)
Fixed price purchase contracts	April 2024 through December 2024		39,606


Euro	Maturity Period	Notional Amount of Contracts (EUR)
Fixed price forward purchase contracts	April 2024 through January 2026		17,485,138


British Pounds	Maturity Period	Notional Amount of Contracts (GBP)
Fixed price forward purchase contracts	May 2024 through July 2024		216,799

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NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

Loss (Gain) on Derivative Contracts

~~that maximize~~

The following table summarizes the ~~use~~amount of ~~observable inputs and minimize the use~~loss (gain) on derivative contracts recorded within our Statements of ~~unobservable inputs to the extent possible and consider counterparty risk~~Consolidated Income in ~~our assessment~~COGS (in millions of ~~fair value.~~dollars):


	Quarter Ended March 31,
	2024			2023
Total of income and expense line items presented in our Statements of Consolidated Income in which the effects of hedges are recorded:
Cash flow hedges	$	642.9		$	731.1

Loss (gain) recognized in our Statements of Consolidated Income related to cash flow hedges:
Aluminum	$	2.0		$	0.5
Natural gas		0.3			(0.3	)
Electricity		(0.2	)		—
Total loss recognized in our Statements of Consolidated Income related to cash flow hedges	$	2.1		$	0.2

Gain recognized in our Statements of Consolidated Income related to non-designated hedges:
Alloying Metals – Unrealized gain	$	—		$	(0.1	)

Fair Values of Derivative Contracts

The fair values of our derivative contracts are based upon trades in liquid markets. Valuation model inputs can be verified, and valuation techniques do not involve significant judgment. The fair values of such financial ~~assets and liabilities~~instruments are ~~evaluated and measured on a recurring basis. As part~~classified within Level 2 of ~~that evaluation process, we review the underlying inputs that are significant to~~ the fair value ~~measurement~~hierarchy.

All of our derivative contracts with counterparties are subject to enforceable master netting arrangements. We reflect the fair value of our derivative contracts on a gross basis on our Consolidated Balance Sheets. The following table presents the fair value of our derivative financial instruments ~~to determine if a transfer among hierarchy levels is appropriate. We historically have not had significant transfers into or out~~(in millions of ~~each hierarchy level.~~

dollars):

Financial assets and liabilities that we measure at fair value each period include our derivative instruments and available for sale securities, consisting of debt investment securities and investments related to our deferred compensation plan (see Note 6). Additionally, we measure at fair value once each year at December 31 the plan assets of the Salaried VEBA (defined in Note 6) and our Canadian defined benefit pension plan. We record our remaining financial assets and liabilities at carrying value.


	As of March 31, 2024								As of December 31, 2023
	Assets		Liabilities			Net Amount			Assets		Liabilities			Net Amount
Aluminum –
Fixed price purchase contracts for LME	$	2.1	$	(0.4	)	$	1.7		$	3.4	$	(0.6	)	$	2.8
Fixed price sale contracts for LME		—		—			—			—		(0.2	)		(0.2	)
Fixed price purchase contracts for MWTP		0.7		(0.1	)		0.6			0.4		(0.3	)		0.1
Fixed price sale contracts for MWTP		—		(0.4	)		(0.4	)		0.1		(0.2	)		(0.1	)
Alloying Metals – Fixed price purchase contracts		0.7		(0.2	)		0.5			0.7		(0.1	)		0.6
Natural gas – Fixed price purchase contracts		0.4		(1.2	)		(0.8	)		0.3		(0.9	)		(0.6	)
Electricity – Fixed price purchase contracts		0.2		(0.9	)		(0.7	)		0.5		(0.6	)		(0.1	)
Foreign currency – Fixed price forward contracts		—		—			—			0.5		—			0.5
Total	$	4.1	$	(3.2	)	$	0.9		$	5.9	$	(2.9	)	$	3.0

For a majority of our non-financial assets and liabilities, which include goodwill, intangible assets, inventories and property, plant and equipment, we are not required to measure their fair value on a recurring basis. However, if certain triggering events occur (or at least annually for goodwill), an evaluation of the affected non-financial asset or liability will be required, which could result in a reduction to the carrying amount of such asset or liability. See Note 4 for a discussion of the goodwill impairment charge recorded during the three months ended June 30, 2017 related to the operations at our Chandler, Arizona (Extrusion) facility.

We concluded that none of our other non-financial assets and liabilities subject to fair value assessments on a non-recurring basis required a material adjustment to the carrying amount of such assets and liabilities for the quarter and nine months ended September 30, 2017.

~~New Accounting Pronouncements.~~ ~~Accounting Standards Update ("ASU") No. 2014-09,~~ ~~Revenue from Contracts with Customers (Topic 606)~~ ~~("ASU 2014-09")~~, was issued in May 2014 and requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In August 2015~~, ASU 2014-09 was amended by~~ ~~ASU No. 2015-14,~~ ~~Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which~~ defers the effective date of ASU 2014-09 by one year for all entities and permits early adoption on a limited basis. ASU 2014-09 was subsequently amended by four additional pronouncements: (i) ASU No. 2016-10, ~~Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing; (ii) ASU No. 2016-11,~~ Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 Pursuant to Staff Announcements at the March 3, 2016 EITF Meeting~~; (iii) ASU No. 2016-12,~~ ~~Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients; and (iv) ASU No. 2016-20,~~ ~~Revenue from Contracts with Customers (Topic 606): Technical Corrections and Improvements to Topic 606~~.

We have evaluated the impacts on our financial reporting of adopting ASU 2014-09, including its subsequent amendments discussed above (together "ASC 606"), and have regularly reported our findings and implementation readiness to the Audit Committee and internal stakeholders. We plan to adopt ASC 606 using the modified retrospective transition approach for the fiscal year ending December 31, 2018, with the cumulative-effect adjustment recognized in beginning Retained earnings. In calculating the cumulative-effect adjustment, we will only apply the guidance to contracts not completed at the date of adoption. The primary change to our accounting policies upon adopting ASC 606 will relate to the timing of when revenue is recognized. While revenue from sales of certain contracts will continue to be recognized at a point in time, revenue from other contracts will be required to be recognized over time. Upon adoption, a majority of our Aero/HS products and a substantial portion of our Automotive Extrusions will convert to over time recognition. For these products, we will accelerate revenue recognition throughout the production process whereas previously we did not recognize revenue until the product shipped or reached its destination, based on the transfer of risks and title. We are still finalizing our assessment of the specific dollar impact that over-time recognition will have on our consolidated financial statements. After the cumulative-effect adjustment, however, we do not believe it will have a material effect on revenue recognized compared to current accounting during any given period.

We do not believe the adoption of ASC 606 will result in: (i) a change in the number of distinct performance obligations within our contractual arrangements; (ii) a change in our current capitalization and deferral policies; (iii) a change in our accounting for contract acquisition and fulfillment costs; (iv) the addition of any contract liability balances; or (v) the adjustment of the amount of promised consideration from our customers for the effects of significant financing components.

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

~~Additionally, we plan to account for shipping~~

The following table presents the total amounts of derivative assets and ~~handling activities that occur after the customer has obtained control of a product as fulfillment activities (i.e., an expense) rather than as a promised service (i.e., a revenue element).~~

As of September 30, 2017, we have: (i) finalized our review of most of our customer contracts; (ii) completed most of the system updates to track information needed to apply ASC 606; and (iii) trained internal stakeholders on the pending changes to revenue recognition policies and work procedures. We expect to complete our implementation work in time to adopt ASC 606 for periods starting after December 31, 2017.

~~ASU No. 2016-02,~~ ~~Leases (Topic 842): Amendments to the Financial Accounting Standards Board Accounting Standards Codification~~ ("ASU 2016-02"), was issued in February 2016. Under ASU 2016-02, lessees will need to recognize a right-of-use asset and a lease liability for virtually all of their leases (other than leases that meet the definition of a short-term lease). For income statement purposes, a dual model was retained, requiring leases to be classified as either operating or finance. Operating leases will result in straight-line expense (similar to current operating leases) while finance leases will result in a front-loaded expense pattern (similar to current capital leases). ASU 2016-02 becomes effective for us in the first quarter of 2019. We are currently assessing the impact and expect the adoption of this ASU in 2019 to have a material impactliabilities on our ~~consolidated financial statements.~~

~~ASU No. 2017-12,~~ ~~Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities~~ ("ASU 2017-12"), was issued in August 2017. The amendments under ASU 2017-12 refine and expand hedge accounting requirements for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the faceConsolidated Balance Sheets (in millions of ~~the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application~~dollars):


	As of March 31, 2024			As of December 31, 2023
Derivative assets:
Prepaid expenses and other current assets	$	3.3		$	4.8
Other assets		0.8			1.1
Total derivative assets	$	4.1		$	5.9
Derivative liabilities:
Other accrued liabilities	$	(2.6	)	$	(2.4	)
Long-term liabilities		(0.6	)		(0.5	)
Total derivative liabilities	$	(3.2	)	$	(2.9	)

Fair Value of hedge accounting guidance. ASU 2017-12 becomes effective for us in the first quarter of 2019. We are currently assessing the impact the adoption of this ASU will have on our consolidated financial statements.

~~We do not anticipate any material impact on our consolidated financial statements upon the adoption of the following accounting pronouncements: (i) ASU No. 2016-01,~~ Other Financial Instruments ~~- Overall (Subtopic 825-10): Recognition and Measurement of~~

All Other Financial Assets and ~~Financial Liabilities~~;~~(ii) ASU No. 2016-13,~~ ~~Financial Instruments - Credit Losses (Topic 326): Measurement~~Liabilities. We believe that the fair values of ~~Credit Losses on Financial Instruments; (iii) ASU~~ ~~No. 2017-07,~~ ~~Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost~~our accounts receivable, contract assets, accounts payable and ~~Net Periodic Postretirement Benefit Cost~~;accrued liabilities approximate their respective carrying values due to their short maturities and ~~(iv) ASU No. 2017-09,~~ ~~Compensation~~ - ~~Stock Compensation (Topic 718): Scope of Modification Accounting~~.nominal credit risk.

~~There were no material impacts on our consolidated financial statements resulting from our early adoption in the first quarter of 2017 of the following accounting pronouncements: (i) ASU No. 2016-15,~~ ~~Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments; (ii) ASU No. 2016-18,~~ ~~Statement of Cash Flows (Topic 230): Restricted Cash~~;~~and (iii) ASU No. 2017-04,~~ ~~Intangibles - Goodwill and Other(Topic 350): Simplifying the Test for Goodwill Impairment.~~

~~2. Supplemental Balance Sheet Information~~

September 30, 2017 December 31, 2016
(In millions of dollars)
Cash and Cash Equivalents
Cash and money market funds $ 17.3
$ 37.9
Commercial paper 56.6
17.3
Total $ 73.9
$ 55.2

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

September 30, 2017 December 31, 2016
(In millions of dollars)
Trade Receivables, Net
Billed trade receivables $ 138.8
$ 138.2
Unbilled trade receivables 0.2
0.3
Trade receivables, gross 139.0
138.5
Allowance for doubtful receivables (0.8 ) (0.8 )
Trade receivables, net $ 138.2
$ 137.7

Inventories
Finished products $ 64.8
$ 73.8
Work-in-process 86.1
71.7
Raw materials 56.9
51.1
Operating supplies 4.4
5.0
Total $ 212.2
$ 201.6

Property, Plant and Equipment, Net
Land and improvements $ 22.7
$ 22.7
Buildings and leasehold improvements 90.2
88.6
Machinery and equipment 675.0
615.1
Construction in progress 27.8
34.8
Property, plant and equipment, gross 815.7
761.2
Accumulated depreciation (258.2 ) (230.6 )
Assets held for sale 0.3
0.3
Property, plant and equipment, net $ 557.8
$ 530.9

Other Accrued Liabilities
Uncleared cash disbursements $ 7.1
$ 5.8
Accrued income taxes and taxes payable 9.0
4.3
Accrued annual contribution to VEBAs 12.0
20.0
Accrued interest 8.4
2.9
Other 6.8
7.1
Total $ 43.3
$ 40.1

Long-Term Liabilities
Workers' compensation accruals $ 25.0
$ 25.0
Long-term environmental accrual – Note 8 16.1
15.8
Long-term portion of contingent contribution to Union VEBA – Note 6 —
12.8
Other long-term liabilities 20.8
19.6
Total $ 61.9
$ 73.2

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

6. Debt and Credit Facility

Senior Notes

~~5.875% Senior Notes.~~ ~~In May 2016,~~

At March 31, 2024 and December 31, 2023, we ~~issued $375.0 million principal amount of 5.875%~~had outstanding fixed-rate unsecured senior notes due May 15, 2024 ("5.875% Senior Notes") at 100% of the principal amount. The unamortized amount of debt issuance costs as of September 30, 2017 was $5.6 million. Interest expense, including amortization of debt issuance costs, relating to the 5.875% Senior Notes ~~was $5.7 million~~with varying maturity dates. The stated interest rates and ~~$17.1 million for the quarter and nine months ended September 30, 2017, respectively, and $5.7 million and $8.8 million for the quarter and nine months ended September 30, 2016. A portion~~aggregate principal amounts of ~~the interest relating to the 5.875%~~our Senior Notes ~~was capitalized as construction in progress. The effective interest rate of the 5.875%~~were, respectively: (i) 4.625% and $500.0 million (“4.625% Senior Notes”) and (ii) 4.50% and $550.0 million (“4.50% Senior Notes”). Our Senior Notes ~~is approximately 6.1% per annum, taking into account~~do not require us to make any mandatory redemptions or sinking fund payments. The following table summarizes key details of our Senior Notes:


				Outstanding (in millions of dollars)
	Issuance Date	Maturity	Effective Interest Rate	As of March 31, 2024			As of December 31, 2023
4.625% Senior Notes	November 2019	March 2028	4.8%	$	500.0		$	500.0
4.50% Senior Notes	May 2021	June 2031	4.7%		550.0			550.0
Total debt					1,050.0			1,050.0
Unamortized issuance costs					(9.7	)		(10.2	)
Total carrying amount				$	1,040.3		$	1,039.8

The following table presents the ~~amortization of debt issuance costs. The~~ fair value of ~~the~~our outstanding ~~5.875%~~ Senior Notes, which are Level 1 liabilities ~~was calculated based on broker quotes and was approximately $402.1 million and $390.8 million at September 30, 2017 and December 31, 2016, respectively.~~

~~8.25% Senior Notes.~~ ~~In May 2012, we issued $225.0 million principal amount~~(in millions of 8.25% unsecured senior notes due June 1, 2020 ("8.25% Senior Notes"), of which $197.8 million principal amount remained outstanding at December 31, 2015. On June 1, 2016 we redeemed in full all remaining 8.25% Senior Notes at a redemption price of 104.125% of the principal amount. Interest expense, including amortization of debt issuance costs, relating to the 8.25% Senior Notes was $7.1 million for the nine months ended September 30, 2016. A portion of the interest relating to the 8.25% Senior Notes was capitalized as construction in progress.dollars):


	As of March 31, 2024		As of December 31, 2023
4.625% Senior Notes	$	469.2	$	462.4
4.50% Senior Notes	$	486.6	$	474.1

Revolving Credit Facility

~~Our credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the other financial institutions party thereto ("~~

In October 2019, we entered into a Revolving Credit ~~Facility") provides~~Facility. Joining us ~~with a $300.0 million funding commitment through December 2020. We had $294.4 million of borrowing availability~~as borrowers under the Revolving Credit Facility ~~at September 30, 2017,~~are four of our wholly owned domestic operating subsidiaries: (i) Kaiser Aluminum Investments Company; (ii) Kaiser Aluminum Fabricated Products, LLC; (iii) Kaiser Aluminum Washington, LLC; and (iv) Kaiser Aluminum Warrick, LLC.

In April 2022, we entered into Amendment No. 3 to our Revolving Credit Facility. As amended, the Revolving Credit Facility contains a maximum commitment amount of $575.0 million (of which up to a maximum of $50.0 million may be utilized for letters of credit) and is set to mature in April 2027. Our effective interest rate on outstanding borrowings under the amended Revolving Credit Facility is based on the ~~borrowing base determination then~~rates of Base Rate Loans and SOFR Loans (as defined in ~~effect. At September 30, 2017, there were no~~the amended Revolving Credit Facility). The rate for Base Rate Loans is equal to the prevailing Prime Rate plus 0.25%, while the rate for SOFR Loans, which are made for one or three month periods, is equal to the Term SOFR Reference Rate (as defined in the amended Revolving Credit Facility) plus 1.35%. Outstanding borrowings under the Revolving Credit Facility ~~and $7.8 million was being used to support outstanding letters of credit, leaving $286.6 million of~~are reported within Long-term debt, net, ~~borrowing availability. The interest rate applicable to any overnight~~on our Consolidated Balance Sheets. We had no borrowings under the Revolving Credit Facility ~~would have been 4.50% at September 30, 2017.~~

~~4. Goodwill and Intangible Assets~~

~~Goodwill.~~ Goodwill is related to our acquisitions of the Chandler, Arizona (Extrusion) facility and the Florence, Alabama facility and is included in the Fabricated Products segment. As of September 30, 2017, the carrying value of our goodwill was $18.8 million, reflecting an impairment in the quarter ended June 30, 2017. The carrying value was $37.2 million at both the beginning and the end of the year ended December 31, 2016.

Several factors identified in a qualitative review in the quarter ended June 30, 2017 indicated that long-term demand for hard alloy extruded shapes produced at the Chandler, Arizona (Extrusion) facility was less than previously assumed. Such factors included: (i) reduced build rates of wide body commercial aircraft; (ii) continued low build rates for business jets; and (iii) additional substitution away from hard alloy extruded shapes in favor of composites, titanium and/or aerospace aluminum plate in the manufacture of commercial aircraft. After testing for goodwill impairment applying Level 3 inputs and a combination of an income approach using the estimated discounted cash flow and a market-based valuation methodology, we impaired the carrying value of the Chandler, Arizona (Extrusion) facility by $18.4 million to its fair value as of June 30, 2017. As this goodwill is deductible for income tax purposes, the deferred tax effects were included in the impairment charge and income tax provision.

~~Intangible Assets. During the quarter ended September 30, 2016, we impaired one of our customer relationship intangible assets by $2.6 million. The non-cash impairment charge resulted from the loss of a customer~~ during the quarter ended ~~September 30, 2016.~~

~~Other than the impairments discussed above,~~March 31, 2024. As of March 31, 2024 and December 31, 2023, we ~~identified~~ had no ~~other indicators of impairment associated with the remainder of~~ outstanding borrowings under our ~~goodwill and intangible assets during the nine months ended September 30, 2017 and September 30, 2016.~~

Revolving Credit Facility.

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

~~5. Income Tax Matters~~

The ~~provision for~~ in~~come taxes for each period presented consisted~~following table summarizes availability and usage of ~~the following~~our Revolving Credit Facility as determined by a borrowing base calculated as of March 31, 2024 (in millions of dollars):


Revolving Credit Facility borrowing commitment	$	575.0
Borrowing base availability	$	544.4
Less: Outstanding borrowings under Revolving Credit Facility		—
Less: Outstanding letters of credit under Revolving Credit Facility		(27.0	)
Remaining borrowing availability	$	517.4

Interest Expense

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Domestic $ 15.7
$ 9.1
$ 35.8
$ 39.5
Foreign 0.4
0.3
1.0
0.7
Total $ 16.1
$ 9.4
$ 36.8
$ 40.2

The income tax provision for the quarters ended September 30, 2017 and September 30, 2016 was $16.1 million and $9.4 million, respectively, reflecting an effective tax rate of 44.7% and 38.7%, respectively. The difference between the effective tax rate and the projected blended statutory tax rate for the quarter ended September 30, 2017 was due to an increase of $2.5 million for the recognition of a deferred tax liability associated with earnings of our Canadian subsidiary that are no longer considered indefinitely reinvested, resulting in a 7.1% increase to the blended statutory tax rate. We determined our indefinite reinvestment assertion with respect to our Canadian foreign earnings was no longer applicable based primarily on expectations that productivity improvements will obviate the need to make sizable capital investments to increase capacity.

~~There was no material difference between the effective tax rate and the projected blended statutory tax rate for the quarter ended September 30, 2016.~~

The income tax provision for the nine months ended September 30, 2017 and September 30, 2016 was $36.8 million and $40.2 million, respectively, reflecting an effective tax rate of 37.8% and 37.5%, respectively. The difference between the effective tax rate and the projected blended statutory tax rate for the nine months ended September 30, 2017 was due to: (i) a decrease of $1.7 million for the recognition of excess tax benefits from stock-based compensation, resulting in a 1.7% decrease to the blended statutory tax rate; (ii) a decrease of $0.5 million to the valuation allowance for certain state net operating losses, resulting in a 0.6% decrease to the blended statutory tax rate; (iii) a decrease of $0.2 million related to unrecognized tax benefits, including interest and penalties, resulting in a 0.2% decrease to the blended statutory tax rate; which was offset by (iv) an increase of $2.5 million for the recognition of a deferred tax liability associated with earnings of our Canadian subsidiary that are no longer indefinitely reinvested, resulting in a 2.6% increase to the blended statutory tax rate.

~~There was no material difference between the effective tax rate and the projected blended statutory tax rate for the nine months ended September 30, 2016.~~

Our gross unrecognized benefits relating to uncertain tax positions were $1.5 million and $1.8 million at September 30, 2017 and December 31, 2016, respectively, of which, $0.4 million and $0.7 million would be recorded through our income tax provision and thus impact the effective tax rate at September 30, 2017 and December 31, 2016, respectively, if the gross unrecognized tax benefits were to be recognized.

~~We do not expect our gross unrecognized tax benefits to significantly change within the next 12 months.~~

~~6. Employee Benefits~~

~~Pension and Similar Benefit Plans.~~ We provide contributions to: (i) defined contribution 401(k) savings plans for salaried employees and certain hourly employees; (ii) a non-qualified, unfunded, unsecured plan of deferred compensation for key employees who would otherwise suffer a loss of benefits under our defined contribution plan; (iii) multi-employer pension plans sponsored by the United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union AFL-CIO, CLC ("USW"), the International Association of Machinists and certain other unions at certain of our production facilities; and (iv) a defined benefit plan for salaried employees at our London, Ontario (Canada) facility.

~~Deferred Compensation Program~~. We have a non-qualified, unfunded, unsecured plan of deferred compensation for key employees who would otherwise suffer a loss of benefits under our defined contribution plan as a result of the limitations imposed by the Internal Revenue Code of 1986. Despite the plan being an unfunded plan, we make an annual contribution to a rabbi trust to fulfill future funding obligations as contemplated by the terms of the plan. These assets are held in various

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

investment funds at certain registered investment companies and are accounted for as available for sale securities within Level 2 of the fair value hierarchy and are measured and recorded at fair value based on their quoted market prices. The fair value of these assets at September 30, 2017 and December 31, 2016 was $9.7 million and $8.2 million, respectively, and are included in Other assets. Offsetting liabilities relating to the deferred compensation plan are included in Long-term liabilities.

~~Union VEBA Postretirement Obligation.~~ Certain eligible retirees participate in a voluntary employees' beneficiary association ("VEBA") that provides healthcare and medical cost reimbursement benefits for eligible retirees represented by certain unions and their surviving spouses and eligible dependents ("Union VEBA"). We have an obligation to make variable cash contributions to the Union VEBA with respect to periods through September 2017. During the first quarter of 2017, we paid $17.1 million to the Union VEBA with respect to the twelve months ended December 31, 2016. Our final cash contribution to the Union VEBA with respect to the nine months ending September 30, 2017 will be paid in the first quarter of 2018. Although the final contribution amount is variable, it cannot exceed $12.8 million. As of September 30, 2017, $12.0 million was recorded within Other accrued liabilities for this final contribution.

~~Salaried VEBA Postretirement Obligation.~~ Additionally, certain other retirees who retired prior to 2004 and certain employees who were hired prior to February 2002 and have subsequently retired or will retire with the requisite age and service, along with their surviving spouses and eligible dependents, are eligible to participate in a separate VEBA that provides healthcare cost, medical cost and long-term care insurance cost reimbursement benefits ("Salaried VEBA"). We have an ongoing obligation with no express termination date to make annual variable cash contributions to the Salaried VEBA based on the contribution formula discussed in Note 6 of Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2016. The contribution amount cannot exceed $2.9 million per year. Our contribution with respect to 2016 was $2.9 million, which we paid in the first quarter of 2017. We account for the Salaried VEBA as a defined benefit plan in our financial statements.

~~Fair Value of Plan Assets.~~ The plan assets of the Salaried VEBA and our Canadian pension plan are measured annually on December 31 and reflected in our Consolidated Balance Sheets at fair value. In determining the fair value of the plan assets at an annual period end, we utilize primarily the results of valuations supplied by the investment advisors responsible for managing the assets of each plan, which we independently review for reasonableness.

~~Components of Net Periodic Benefit Cost.~~ Our results of operations included the following impacts associated with the Canadian defined benefit plan and the Salaried VEBA: (i) a charge for service rendered by employees; (ii) a charge for accretion of interest; (iii) a benefit for the return on plan assets; and (iv) amortization of prior service costs associated with plan amendments and net gains or losses on assets. Net periodic benefit cost related to the Canadian defined benefit plan was not material for the quarters and nine months ended September 30, 2017 and ~~September 30, 2016~~.

The following table presents ~~the components of Net periodic postretirement benefit cost~~interest expense relating to ~~Salaried VEBA for the periods presented~~our Senior Notes and Revolving Credit Facility (in millions of dollars):


	Quarter Ended March 31,
	2024			2023
Senior Notes interest expense, including debt issuance cost amortization	$	12.4		$	12.4
Revolving Credit Facility interest expense, including commitment fees and finance cost amortization		0.6			0.8
Interest expense on finance lease liabilities		0.2			0.1
Interest expense capitalized as construction in progress		(1.7	)		(1.4	)
Total interest expense	$	11.5		$	11.9

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Salaried VEBA¹:

Interest cost $ 0.8
$ 0.7
$ 2.3
$ 2.2
Expected return on plan assets (1.0 ) (1.0 ) (3.1 ) (3.0 )
Amortization of prior service cost 1.2
�� 1.0
3.6
3.0
Amortization of net actuarial loss 0.2
0.1
0.6
0.3
Total net periodic postretirement benefit cost relating to Salaried VEBA $ 1.2
$ 0.8
$ 3.4
$ 2.5

~~____________~~


¹	~~The service cost was insignificant for all periods presented.~~

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~The following table presents the total charges (income) related to all benefit plans for the periods presented (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Included within Fabricated Products:
Deferred compensation plan $ 0.1
$ 0.1
$ 0.3
$ 0.2
Defined contribution plans 1.3
1.6
6.8
6.7
Multiemployer pension plans 1.1
1.2
3.4
3.5
Total Fabricated Products $ 2.5
$ 2.9
$ 10.5
$ 10.4

Included within All Other:
Deferred compensation plan 0.4
0.4
1.1
0.6
Defined contribution plans 0.1
0.1
0.7
0.7
Net periodic postretirement benefit cost relating to Salaried VEBA 1.2
0.8
3.4
2.5
Loss (gain) on removal of Union VEBA net assets 0.5
—
(0.8 ) (0.1 )
Total All Other $ 2.2
$ 1.3
$ 4.4
$ 3.7
Total $ 4.7
$ 4.2
$ 14.9
$ 14.1

For all periods presented, substantially all of the Fabricated Products segment's employee benefits related charges are in Cost of products sold, excluding depreciation and amortization and other items with the remaining balance in Selling, general, administrative, research and development ("SG&A and R&D").

7. ~~Employee Incentive Plans~~

~~Short-Term Incentive Plans ("STI Plans")~~

We have annual short-term incentive compensation plans for senior management and certain other employees payable at our election in cash, shares of common stock, or a combination of cash and shares of common stock. Amounts earned under STI Plans are based on our adjusted earnings before interest, taxes, depreciation and amortization ("Adjusted EBITDA"), modified for certain safety, quality, delivery, cost and individual performance factors. The Adjusted EBITDA targets are determined based on the return on adjusted net assets of our Fabricated Products business. Most of our production facilities have similar programs for both hourly and salaried employees. As of September 30, 2017, we had a liability of $14.5 million recorded within Accrued salaries, wages and related expenses for estimated probable future payments relating to the nine month performance period of our 2017 STI Plan.

~~Long-Term Incentive Programs ("LTI Programs")~~

~~General~~. Executive officers and other key employees of the Company, as well as non-employee directors of the Company, were eligible to participate in the Kaiser Aluminum Corporation 2016 Equity and Incentive Compensation Plan ("2016 Plan"). The 2016 Plan was approved by stockholders on May 26, 2016 and replaced and succeeded in its entirety the Kaiser Aluminum Corporation Amended and Restated 2006 Equity and Performance Incentive Plan. At September 30, 2017, 735,724 shares were available for awards under the 2016 Plan.

~~Non-Vested Common Shares and Restricted Stock Units.~~ We grant non-vested common shares to our non-employee directors and non-vested common shares and restricted stock units to our executive officers and other key employees. The restricted stock units have rights similar to the rights of non-vested common shares and each restricted stock unit that becomes vested entitles the recipient to receive one common share or a cash amount equaling the value of one common share. For both non-vested common shares and restricted stock units, the service period is generally one year for non-employee directors and three years for executive officers and other key employees.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~Performance Shares~~. In addition to non-vested common shares and restricted stock units, we grant performance shares to executive officers and other key employees. Each performance share that becomes vested and earned entitles the recipient to receive one common share or a cash amount equaling the value of one common share. During the first quarter of 2017, performance shares granted in 2014 under the 2014-2016 LTI Program vested (see "~~Summary of Activity~~" below). The number of performance shares that vested and resulted in the issuance of common shares was determined based on our total shareholder return ("TSR") compared to the TSR of a specified group of peer companies over a three-year performance period.

Performance shares granted in 2015 are subject to performance conditions pertaining to our TSR relative to the TSR of a specified group of peer companies over a three-year performance period ("TSR-Based Performance Shares").

Performance shares granted in 2016 consist of TSR-Based Performance Shares and performance shares subject to performance requirements pertaining to our total controllable cost performance over a three-year performance period ("CP-Based Performance Shares").

Performance shares granted in 2017 consist of TSR-Based Performance Shares, CP-Based Performance Shares and performance shares subject to performance conditions pertaining to our economic value added ("EVA") performance, determined based on our adjusted pre-tax operating income in excess of a capital charge, over a three-year performance period ("EVA-Based Performance Shares").

The number of performance shares under the 2015-2017, 2016-2018 and 2017-2019 LTI Programs that may be earned and result in the issuance of common shares ranges between 0% to 200% of the target number of underlying common shares, which is approximately one-half of the maximum payout. The performance shares granted under the 2015-2017, 2016-2018 and 2017-2019 LTI Programs will vest in 2018, 2019 and 2020, respectively.

~~Non-Cash Compensation Expense.~~ Non-cash compensation expense relating to all awards is included in SG&A and R&D. Non-cash compensation expense by type of award under LTI Programs was as follows for each period presented (in millions of dollars):

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Non-vested common shares and restricted stock units $ 1.4
$ 1.2
$ 3.9
$ 3.5
TSR-Based Performance Shares 1.2
1.5
3.7
4.0
CP-Based Performance Shares 0.8
0.4
2.0
0.9
EVA-Based Performance Shares 0.2
—
0.4
0.3
Total non-cash compensation expense $ 3.6
$ 3.1
$ 10.0
$ 8.7

~~The following table presents the allocation of the charges detailed above, by segment (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Fabricated Products $ 1.3
$ 1.2
$ 3.8
$ 3.1
All Other 2.3
1.9
6.2
5.6
Total non-cash compensation expense $ 3.6
$ 3.1
$ 10.0
$ 8.7

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~Unrecognized Gross Compensation Cost Data.~~ ~~The following table presents unrecognized gross compensation cost data by type of award as of September 30, 2017:~~

Unrecognized Gross Compensation Costs
(in millions of dollars)
Expected Period (in years) Over Which the Remaining Gross Compensation Costs Will Be Recognized
Non-vested common shares and restricted stock units $ 9.6
2.6
TSR-Based Performance Shares $ 5.6
1.7
CP-Based Performance Shares $ 6.1
2.1
EVA-Based Performance Shares $ 1.5
2.4

~~Summary of Activity.~~ A summary of the activity with respect to non-vested common shares, restricted stock units, TSR-Based Performance Shares, CP-Based Performance Shares and EVA-Based Performance Shares for the nine months ended September 30, 2017 is as follows:

Non-Vested
Common Shares

Restricted
Stock Units
TSR-Based Performance Shares
CP-Based
Performance Shares
EVA-Based Performance Shares
Shares
Weighted-Average
Grant-Date Fair
Value per Share
Units
Weighted-Average
Grant-Date Fair
Value per Unit
Shares Weighted-Average
Grant-Date Fair
Value per Share Shares Weighted-Average
Grant-Date Fair
Value per Share Shares
Weighted-Average
Grant-Date Fair
Value per Share
Outstanding at December 31, 2016 114,658
$ 69.51
61,800
$ 74.94
394,525
$ 90.30
63,678
$ 80.46
—
$ —
Granted¹
11,817
86.92
92,275
76.13
65,044
97.88
65,044
79.69
32,504
79.69
Vested (46,689 ) 71.46
(8,655 ) 76.94
(94,082 ) 83.18
—
—
—
—
Forfeited¹
(427 ) 69.83
(6,412 ) 77.70
(5,519 ) 95.88
(3,342 ) 79.92
(1,164 ) 79.69
Canceled¹
—
—
—
—
(55,288 ) 83.18
—
—
—
—
Outstanding at September 30, 2017 79,359
$ 70.96
139,008
$ 75.72
304,680
$ 95.31
125,380
$ 80.07
31,340
$ 79.69

~~____________~~


¹	For performance shares, the number of shares granted and forfeited are presented at their maximum payout; and the number of shares canceled includes the number of shares that did not vest due to performance results falling below those required for maximum payout.

~~The weighted-average grant-date fair value per share for shares granted by type of award was as follows for each period presented:~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Non-vested common shares $ —
$ —
$ 86.92
$ 86.11
Restricted stock units $ 82.33
$ —
$ 76.13
$ 75.57
TSR-Based Performance Shares $ —
$ —
$ 97.88
$ 93.02
CP-Based Performance Shares $ —
$ —
$ 79.69
$ 80.46
EVA-Based Performance Shares $ —
$ —
$ 79.69
$ —

~~Stock Options.~~ As of December 31, 2016, we had 1,543 fully-vested outstanding stock options exercisable to purchase common shares at $80.01 per share, all of which subsequently expired on April 2, 2017. No options were granted during the nine months ended September 30, 2017, and no options were outstanding as of September 30, 2017.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

Participants may elect to have us withhold common shares to satisfy minimum statutory tax withholding obligations arising in connection with the exercise of stock options and vesting of non-vested shares, restricted stock units and performance shares. We cancel any such shares withheld on the applicable vesting dates or earlier dates when service requirements are satisfied, which correspond to the times at which income to the employee is recognized. When we withhold these common shares, we are required to remit to the appropriate taxing authorities the fair value of the shares withheld as of the vesting date. During the nine months ended ~~September 30, 2017~~ ~~and September 30, 2016, 56,195 and~~ ~~35,498~~ ~~common shares, respectively, were withheld and canceled for this purpose. The withholding of common shares by us could be deemed a purchase of the common shares.~~

8. Commitments and Contingencies

Commitments. We have a variety of financial commitments, including purchase agreements, forward foreign exchange and forward sales contracts, indebtedness and letters of credit (see Note 35 and Note 9)6).

Environmental Contingencies. We are subject to a number of environmental laws and regulations, to potential fines or penalties assessed for alleged breaches of such laws and regulations and to potential claims based upon such laws and regulations. We are also subject to legacy environmental contingencies related to activities that occurred at operating facilities ~~within Fabricated Products~~ prior to July 6, 2006, ~~while such operating facilities were being operated by a predecessor,~~ which represent the majority of our environmental accruals. The status of these environmental contingencies are discussed below. We have established procedures for regularly evaluating environmental loss contingencies. Our environmental accruals represent our undiscounted estimate of costs reasonably expected to be incurred based on presently enacted laws and regulations, ~~existing requirements,~~ currently available facts, existing requirements, existing technology and our assessment of the likely remediation actions to be taken.

We continue to pursue remediation activities, primarily to address the historical use of oils containing polychlorinated biphenyls ~~("PCBs"~~(“PCBs”) at our ~~Spokane, Washington ("Trentwood")~~Trentwood facility. Our remediation efforts are in collaboration with the Washington State Department of Ecology ~~("Washington State Ecology"~~(“Ecology”), to which we submitted a feasibility study in 2012 of remediation alternatives and from which we received permission to begin certain remediation activities pursuant to a signed work order. ~~As we~~We have ~~finished~~completed a number of sections of the work plan weand have received satisfactory completion approval from ~~Washington State~~ Ecology on ~~satisfactory completion of~~ those sections. ~~Additionally, in~~In cooperation with ~~Washington State~~ Ecology, we constructed an experimental treatment facility to determine the treatability and evaluate the feasibility of removing PCBs from ground water under the Trentwood ~~facility,~~facility. In 2015, we ~~constructed a pilot test facility and~~ began treatment operations atinvolving a walnut shell filtration system, which we optimized for maximum PCB capture during 2020. Furthermore, based on advancements in technology, we signed an Amended Agreed Order with Ecology in 2020 to evaluate and implement new technologies for PCB removal from groundwater on a pilot basis. The primary technology we are evaluating is Ultraviolet Light Advanced Oxidation Process (the “UV Process”). As the ~~test facility in the first half of 2016. As the~~long-term success of the ~~new methodology~~UV Process cannot be reasonably determined at this time, it is possible we may need to make upward adjustments to our related accruals ~~as facts~~ and cost estimates ~~regarding~~as the ~~groundwater treatment method and the operation of the treatment facility~~long-term results become available.

~~During 2013, at the request of~~

Pursuant to a consent agreement with the Ohio Environmental Protection Agency ~~("OEPA"~~(“OEPA”), we initiated an investigational study of ~~the~~our Newark ~~Ohio ("Newark")~~ facility related to historical on-site waste disposal. ~~Since 2014,~~During the quarter ended December 31, 2018, we ~~have completed a number of preliminary steps in~~submitted our remedial investigation study to the ~~preparation of completing the final risk assessment and feasibility study, both of which are subject to~~OEPA for review and ~~approval~~approval. The final remedial investigation report was approved by the ~~OEPA. As work continues and progresses~~OEPA during the quarter ended December 31, 2020. We have submitted the Alternate Arrays Document (“AAD”) to ~~a final risk assessment and feasibility study, we will establish and update estimates~~the OEPA for ~~probable and estimable remediation, if any. The actual and final cost for remediation will not be fully determinable until a final feasibility study~~review during the quarter ended December 31, 2023. Once the AAD is ~~submitted~~reviewed and accepted by the OEPA, we plan to submit our feasibility study to the OEPA and the selected remediation design work plans are ~~prepared,~~completed, which ~~is expected~~we expect to occur in ~~the next 12 to 15 months.~~2024.

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS – UNAUDITED

At ~~September 30, 2017,~~March 31, 2024, our environmental accrual of ~~$16.9~~$16.1 million represented our estimate of the incremental remediation cost based on: (i) proposed alternatives in the final feasibility study related to the Trentwood facility; (ii) currently available facts with respect to our Newark facility; and (iii) facts related to certain other locations owned or formerly owned by us. In accordance with approved and proposed remediation action plans, we expect that the implementation and ongoing monitoring could occur over a period of 30 or more years.

As additional facts are developed, feasibility studies are completed, ~~draft~~ remediation plans are modified, necessary regulatory approvals for the implementation of remediation are obtained, alternative technologies are developed and/or other factors change, there may be revisions to ~~management's~~management’s estimates and actual costs may exceed the current environmental accruals. We believe at this time that it is reasonably possible that undiscounted costs associated with these environmental matters may exceed current accruals by amounts that could be, in the aggregate, up to an estimated ~~$12.2~~$11.5 million over the remediation period. It is reasonably possible that our recorded estimate will change in the next 12 ~~months.~~

months.

Other Contingencies. We are party to various lawsuits, claims, investigations and administrative proceedings that arise in connection with past and current operations. We evaluate such matters on a case-by-case basis and our policy is to vigorously

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

contest any such claims we believe are without merit. We accrue for a legal liability when it is both probable that a liability has been incurred and the amount of the loss is reasonably estimable. Quarterly, in addition to when changes in facts and circumstances require it, we review and adjust these accruals to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. While uncertainties are inherent in the final outcome of such matters and it is presently impossible to determine the actual cost that may ultimately be incurred, we believe that we have sufficiently accrued for such matters and that the ultimate resolution of pending matters will not have a material impact on our consolidated financial position, operating results or liquidity.

~~9. Derivatives, Hedging Programs and Other Financial Instruments~~

~~Overview~~. In conducting our business, we enter into derivative transactions, including forward contracts and options, to limit our exposure to: (i) metal price risk related to our sale of fabricated aluminum products and the purchase of metal used as raw material for our fabrication operations; (ii) energy price risk relating to fluctuating prices of natural gas and electricity used in our production processes; and (iii) foreign currency requirements with respect to our foreign subsidiaries and cash commitments for equipment purchases denominated in foreign currency.

Our derivative activities are overseen by a hedging committee ("Hedging Committee"), which is composed of our chief executive officer, chief operating officer, chief financial officer, chief accounting officer, treasurer and other officers and employees selected by the chief executive officer.~~The Hedging Committee meets regularly to review commodity price exposure, derivative positions and strategy, and management reports to our Board of Directors on the scope of its activities.~~

We are exposed to counterparty credit risk on all of our derivative instruments, which we manage by monitoring the credit quality of our counterparties and allocating our hedging positions among multiple counterparties to limit exposure to any single entity. Our counterparties are major, investment grade financial institutions or trading companies. Hedging transactions are governed by negotiated reciprocal credit lines, which generally require collateral to be posted above specified credit thresholds. We believe the risk of loss is remote and contained due to counterparty credit quality, our diversification practice and collateral requirements.

In a majority of our hedging counterparty agreements, our counterparty offers us a credit line that adjusts up or down, depending on our liquidity. Below specified liquidity thresholds, we may have to post collateral if the fair value of our net liability with such counterparty exceeds our reduced credit line. We manage this risk by allocating hedging transactions among multiple counterparties, using options as part of our hedging activities, or both. The aggregate fair value of our derivative instruments that were in a net liability position was insignificant at both September 30, 2017 and December 31, 2016, and we had no collateral posted as of those dates.

Additionally, our firm-price customer sales commitments create incremental customer credit risk related to metal price movements. Under certain circumstances, we mitigate this risk by periodically requiring cash collateral from them, which we classify as deferred revenue and include as a component of Other accrued liabilities. At September 30, 2017, we had no cash collateral posted from any of our customers. For more information about concentration risks concerning customers and suppliers, see Note 11.

~~Notional Amount of Derivative Contracts. The following table summarizes our derivative positions at September 30, 2017:~~



~~Aluminum~~	~~Maturity Period~~ ~~(month/year)~~	~~Notional Amount of contracts (mmlbs)~~
~~Purchased put option contracts~~	~~10/17 through 12/17~~	~~13.4~~
~~Fixed price purchase contracts~~	~~10/17 through 12/21~~	~~151.9~~
~~Fixed price sales contracts~~	~~10/17 through 11/19~~	~~1.8~~
~~Midwest premium swap contracts~~¹	~~10/17 through 12/21~~	~~150.1~~



~~Alloying Metals~~	~~Maturity Period~~ ~~(month/year)~~	~~Notional Amount of contracts (mmlbs)~~
~~Fixed price purchase contracts~~	~~10/17 through 6/18~~	~~4.6~~

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~



~~Natural Gas~~²	~~Maturity Period~~ ~~(month/year)~~	~~Notional Amount of contracts (mmbtu)~~
~~Fixed price purchase contracts~~	~~10/17 through 12/20~~	~~3,650,000~~



~~Euro~~	~~Maturity Period~~ ~~(month/year)~~	~~Notional Amount of contracts (euro)~~
~~Fixed price purchase contracts~~	~~10/17 through 4/18~~	~~301,304~~

~~______________________~~


¹	~~Regional premiums represent the premium over the London Metal Exchange price for primary aluminum which is incurred on our purchases of primary aluminum.~~


²	As of September 30, 2017, we had derivative and/or physical delivery commitments with energy companies in place to cover exposure to fluctuations in prices for approximately 72% of the expected natural gas purchases for the remainder of 2017, 71% of the expected natural gas purchases for both 2018 and 2019 and 39% of the expected natural gas purchases for 2020.

We have physical delivery commitments at firm prices covering approximately 54% of our expected electricity purchases for the remainder of 2017, 55% of the expected electricity purchases for both 2018 and 2019 and 18% of the expected electricity purchases for 2020.

~~Non-Designated Hedges of Operational Risks~~. Our pricing of fabricated aluminum products is generally intended to lock in a conversion margin (representing the value added from the fabrication process(es)) and to pass through metal price fluctuations to our customers. For some of our higher value added products sold on a spot basis, the pass through of metal price movements can sometimes lag by as much as several months, with a favorable impact to us when metal prices decline and an adverse impact to us when metal prices increase. Additionally, in certain instances, we enter into firm-price arrangements with our customers for stipulated volumes to be delivered in the future. Because we generally purchase primary and secondary aluminum on a floating price basis, the lag in passing through metal price movements to customers on some of our higher value added products sold on a spot basis and the volume that we have committed to sell to our customers under a firm-price arrangement create metal price risk for us. We use third-party hedging instruments to limit exposure to metal price risk related to the metal pass through lag on some of our products and firm-price customer sales contracts.

We are exposed to risk of fluctuating prices for natural gas and electricity. We, from time to time, in the ordinary course of business, enter into hedging transactions and/or physical delivery commitments with third parties to mitigate our risk from fluctuations in natural gas and electricity prices.

We are also exposed to foreign currency exchange risk related to firm-price agreements for equipment purchases from foreign manufacturers. We use foreign currency forward contracts designed to line up with the timing and amounts of scheduled payments to the foreign equipment manufacturers to mitigate our exposure to currency exchange rate fluctuations on these purchases. Realized and unrealized periodic gains and losses of non-designated foreign currency forward contracts are reflected as a reduction or increase in Other income (expense), net.

~~Designated Alloying Metal Hedges~~. We enter into agreements with suppliers to purchase alloying metals (zinc and copper) used as raw materials in our fabrication operations at fluctuating prices that we are unable to pass along to our customers. We mitigate our exposure to metal price risk by entering into Alloy Hedges with third-party financial institutions at predetermined/fixed prices at stated delivery dates. Our Alloy Hedges are expected to be highly effective because monthly settlements correspond to forecasted physical purchases of alloying metals by our manufacturing facilities. The effective portion of the fair value on these Alloy Hedges is recorded within Other comprehensive income, net of tax, and is reclassified into the Statements of Consolidated Income during the month of settlement to Cost of products sold (See Note 14). As of September 30, 2017, we estimate the net gain of $0.5 million will be reclassified from Accumulated other comprehensive income into Net income within the next 12 months. We incurred no ineffectiveness on these hedges during the quarter and nine months ended September 30, 2017.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~Realized and Unrealized Gain and Loss.~~ Realized and unrealized (gain) loss included on the Statements of Consolidated Income associated with all derivative contracts consisted of the following for each period presented (in millions of dollars):

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Realized (gain) loss:
Aluminum $ (4.0 ) $ 0.4
$ (13.8 ) $ 4.1
Natural gas 0.2
0.9
0.3
4.2
Alloy Hedges (0.3 ) —
(0.2 ) —
Foreign exchange (0.1 ) —
(0.1 ) —
Total realized (gain) loss¹
$ (4.2 ) $ 1.3
$ (13.8 ) $ 8.3

Unrealized (gain) loss:
Aluminum $ (10.6 ) $ (1.7 ) $ (15.3 ) $ (11.7 )
Natural gas (0.2 ) (0.3 ) 1.3
(5.2 )
Total unrealized gain²
$ (10.8 ) $ (2.0 ) $ (14.0 ) $ (16.9 )

~~______________________~~


¹	~~Recorded within Cost of products sold, excluding depreciation, amortization and other items within the Fabricated Products segment.~~


²	~~Recorded within Unrealized gain on derivative instruments within the Fabricated Products segment.~~

~~Fair Values of Derivative Contracts.~~ The fair values of our derivative contracts are based upon trades in liquid markets. Valuation model inputs can be verified, and valuation techniques do not involve significant judgment. The fair values of such financial instruments are classified within Level 2 of the fair value hierarchy.

~~The following table presents our financial instruments, classified under the appropriate level of the fair value hierarchy, as of the period presented (in millions of dollars):~~

September 30, 2017
Level 1 Level 2 Level 3 Total
DERIVATIVE ASSETS:
Non-Designated Hedges:
Aluminum –
Fixed price purchase contracts $ —
$ 18.4
$ —
$ 18.4
Midwest premium swap contracts —
0.8
—
0.8
Natural gas – Fixed price purchase contracts
—
0.4
—
0.4

Designated Hedges:
Alloying metals – Fixed price purchase contracts
—
0.9
—
0.9
Total derivative assets¹
$ —
$ 20.5
$ —
$ 20.5

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

September 30, 2017
Level 1 Level 2 Level 3 Total
DERIVATIVE LIABILITIES:
Non-Designated Hedges:
Aluminum –
Fixed price sales contracts $ —
$ (0.1 ) $ —
$ (0.1 )
Midwest premium swap contracts —
(0.8 ) —
(0.8 )
Natural gas – Fixed price purchase contracts
—
(0.5 ) —
(0.5 )
Total derivative liabilities²
$ —
$ (1.4 ) $ —
$ (1.4 )

~~____________~~


¹	~~Of the $20.5 million in total derivative assets, $15.8 million and $4.7 million were recorded within Prepaid expenses and other current assets and Other assets, respectively.~~


²	~~Of the $1.4 million in total derivative liabilities, $0.9 million and $0.5 million were recorded within Other accrued liabilities and Long-term liabilities, respectively.~~

~~The following table presents our financial instruments, classified under the appropriate level of the fair value hierarchy, as of the period presented (in millions of dollars):~~

December 31, 2016
Level 1 Level 2 Level 3 Total
DERIVATIVE ASSETS:
Non-Designated Hedges:
Aluminum –
Fixed price purchase contracts $ —
$ 3.3
$ —
$ 3.3
Midwest premium swap contracts —
0.9
—
0.9
Natural gas – Fixed price purchase contracts
—
1.6
—
1.6
Total derivative assets¹
$ —
$ 5.8
$ —
$ 5.8

DERIVATIVE LIABILITIES:
Non-Designated Hedges:
Aluminum –

Fixed price purchase contracts $ —
$ (1.1 ) $ —
$ (1.1 )
Midwest premium swap contracts —
(0.2 ) —
(0.2 )
Natural gas – Fixed price purchase contracts
—
(0.4 ) —
(0.4 )

Designated Hedges:
Alloying metals – Fixed price purchase contracts
—
(0.1 ) —
(0.1 )
Total derivative liabilities²
$ —
$ (1.8 ) $ —
$ (1.8 )

~~____________~~


¹	~~Of the $5.8 million in total derivative assets, $5.0 million and $0.8 million were recorded within Prepaid expenses and other current assets and Other assets, respectively.~~


²	~~Of the $1.8 million in total derivative liabilities, $0.8 million and $1.0 million were recorded within Other accrued liabilities and Long-term liabilities, respectively.~~

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

The aggregate fair value of our derivatives at September 30, 2017 and December 31, 2016 was a net asset of $19.1 million and a net asset of $4.0 million, respectively. The increase in the net asset position during the nine months ended September 30, 2017 was primarily due to changes in the underlying commodity and energy prices, as well as settlement of positions during the period. Changes in the fair value of our derivative contracts relating to non-designated hedges of operational activities are reflected in Operating income.

~~Offsetting Information~~. We enter into derivative contracts with counterparties subject to enforceable master netting arrangements and, from time to time, not subject to netting arrangements. We reflect the fair value of our derivative contracts on a gross basis on the Consolidated Balance Sheets. We had no cash collateral pledged or received with our counterparties as of both September 30, 2017 and December 31, 2016.

~~The following tables present offsetting information regarding our derivatives by type of counterparty as of~~ ~~September 30, 2017~~ ~~(in millions of dollars):~~

Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount
Counterparty
(with netting agreements)
$ 20.5
$ —
$ 20.5
$ 1.4
$ 19.1
Total $ 20.5
$ —
$ 20.5
$ 1.4
$ 19.1

Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Liabilities Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount
Counterparty
(with netting agreements)
$ (1.4 ) $ —
$ (1.4 ) $ (1.4 ) $ —
Total $ (1.4 ) $ —
$ (1.4 ) $ (1.4 ) $ —

~~The following tables present offsetting information regarding our derivatives by type of counterparty as of December 31, 2016 (in millions of dollars):~~

Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Assets Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount
Counterparty
(with netting agreements)
$ 3.3
$ —
$ 3.3
$ 1.0
$ 2.3
Counterparty
(with partial netting agreements)
2.5
—
2.5
0.7
1.8
Total $ 5.8
$ —
$ 5.8
$ 1.7
$ 4.1

Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheets Net Amounts of Liabilities Presented in the Consolidated Balance Sheets Gross Amounts Not Offset in the Consolidated Balance Sheets Net Amount
Counterparty
(with netting agreements)
$ (1.0 ) $ —
$ (1.0 ) $ (1.0 ) $ —
Counterparty
(with partial netting agreements)
(0.8 ) —
(0.8 ) (0.7 ) (0.1 )
Total $ (1.8 ) $ —
$ (1.8 ) $ (1.7 ) $ (0.1 )

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~Fair Value of Other Financial Instruments~~

~~Available for Sale Securities.~~ We hold debt investment securities that are accounted for as available for sale securities. The fair value of the debt investment securities, which consist of commercial paper and corporate bonds, is determined based on valuation models that use observable market data. At September 30, 2017, all of our short-term investments had maturity dates within 12 months. We review our debt investment portfolio for other-than-temporary impairment at least quarterly or when there are changes in credit risk or other potential valuation concerns. At September 30, 2017 and December 31, 2016, the total unrealized loss, net of tax, included in Accumulated other comprehensive income was immaterial and was not other-than-temporarily impaired. We believe that it is probable that the principal and interest will be collected in accordance with the contractual terms, and that the unrealized loss on these securities was due to normal market fluctuations, and not due to increased credit risk or other valuation concerns. The fair value input of our available for sale securities, which are classified within Level 2 of the fair value hierarchy, is calculated based on broker quotes. The amortized cost for available for sale securities approximates their fair value.

~~All Other Financial Assets and Liabilities.~~ We believe that the fair value of our cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities approximate their respective carrying values due to their short maturities and nominal credit risk. See Note 2 for components of cash and cash equivalents.

~~The following table presents our other financial assets, classified under the appropriate level of the fair value hierarchy, as of September 30, 2017 (in millions of dollars):~~

Level 1 Level 2 Level 3 Total
Cash and cash equivalents $ 17.3
$ 56.6
$ —
$ 73.9
Short-term investments —
191.4
—
191.4
Total $ 17.3
$ 248.0
$ —
$ 265.3

~~The following table presents our other financial assets, classified under the appropriate level of the fair value hierarchy, as of December 31, 2016 (in millions of dollars):~~

Level 1 Level 2 Level 3 Total
Cash and cash equivalents $ 37.9
$ 17.3
$ —
$ 55.2
Short-term investments —
231.0
—
231.0
Total $ 37.9
$ 248.3
$ —
$ 286.2

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~10. Net Income Per Share and Stockholders' Equity~~

~~Net Income Per Share. Basic and diluted net income per share were calculated as follows, for each period presented (in millions of dollars, except share and per share amounts):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Numerator:
Net income $ 19.9
$ 14.9
$ 60.6
$ 67.2
Denominator – Weighted-average common shares outstanding (in thousands):
Basic¹
16,834
17,841
17,072
17,858
Add: dilutive effect of non-vested common shares, restricted stock units, performance shares and stock options 326
334
291
323
Diluted²
17,160
18,175
17,363
18,181

Net income per common share, Basic: $ 1.18
$ 0.84
$ 3.55
$ 3.76
Net income per common share, Diluted: $ 1.16
$ 0.82
$ 3.49
$ 3.70

~~______________________~~


¹	~~The basic weighted-average number of common shares outstanding during the periods presented excludes non-vested common shares, restricted stock units and performance shares.~~


²	~~The diluted weighted-average number of common shares outstanding during the periods presented was calculated using the treasury method.~~

The following securities were excluded from the weighted-average diluted shares computation for the quarters and nine months ended September 30, 2017 and September 30, 2016 as their inclusion would have been anti-dilutive (in thousands of shares):

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Non-vested common shares, restricted stock units and performance shares 3
3
3
2
Total excluded 3
3
3
2

~~Dividends~~. During the nine months ended September 30, 2017 and September 30, 2016, we paid a total of approximately $26.4 million and $24.4 million, respectively, in cash dividends to stockholders, including the holders of restricted stock, and in dividend equivalents to the holders of certain restricted stock units and performance shares.

~~Stock Repurchase Program~~. From time to time, we repurchase shares pursuant to a stock repurchase program authorized by our Board of Directors. Such repurchases of our common stock are recorded as Treasury stock. Repurchase transactions will occur at such times and prices as management deems appropriate and will be funded with our excess liquidity after giving consideration to, among other things, internal and external growth opportunities and future cash flows. Repurchases may be in open-market transactions or in privately negotiated transactions and the program may be modified or terminated by our Board of Directors at any time.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~The following table summarizes repurchases recorded as treasury stock for each period presented:~~

Nine Months Ended
September 30,
2017 2016
Number of common shares repurchased 806,307
170,304
Weighted-average repurchase price (dollars per share) $ 80.60
$ 81.04
Total cost of repurchased common shares (in millions of dollars) $ 64.9
$ 13.8

~~At September 30, 2017, $123.4 million were available to repurchase our common shares pursuant to the stock repurchase program.~~

~~11. Segment and Geographical Area Information~~

Our primary line of business is the production of semi-fabricated specialty aluminum products, such as aluminum plate and sheet and extruded and drawn products, primarily used in Aero/HS products, Automotive Extrusions, GE products and Other products. We operate 11 focused production facilities in the United States and one in Canada. Consistent with the manner in which our chief operating decision maker reviews and evaluates our business, the Fabricated Products business is treated as a single operating segment. At September 30, 2017, approximately 64% of our employees were covered by collective bargaining agreements and approximately 12% of our employees were covered by collective bargaining agreements with expiration dates occurring within one year from September 30, 2017.

In addition to the Fabricated Products segment, we have a business unit, All Other, which provides general and administrative support for our operations. For purposes of segment reporting under GAAP, we treat the Fabricated Products segment as a reportable segment. All Other is not considered a reportable segment.

The accounting policies of the Fabricated Products segment are the same as those described in Note 1. Segment results are evaluated internally by management before any allocation of corporate overhead and without any charge for income taxes, interest expense or other net operating charges.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~The following tables provide financial information by reporting segment and business unit for each period or as of each period end, as applicable (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Net sales:
Fabricated Products $ 332.8
$ 320.6
$ 1,044.4
$ 998.7
Segment operating income (loss):
Fabricated Products $ 53.7
$ 42.1
$ 149.9
$ 172.1
All Other (13.9 ) (12.3 ) (39.2 ) (39.6 )
Total operating income $ 39.8
$ 29.8
$ 110.7
$ 132.5
Interest expense (5.3 ) (5.5 ) (16.4 ) (14.7 )
Other income (expense), net 1.5
—
3.1
(10.4 )
Income before income taxes $ 36.0
$ 24.3
$ 97.4
$ 107.4
Depreciation and amortization:
Fabricated Products $ 10.1
$ 8.8
$ 28.9
$ 26.2
All Other 0.1
0.2
0.4
0.5
Total depreciation and amortization $ 10.2
$ 9.0
$ 29.3
$ 26.7
Capital expenditures:
Fabricated Products $ 16.3
$ 15.0
$ 55.7
$ 57.1
All Other 0.1
0.1
0.4
0.3
Total capital expenditures $ 16.4
$ 15.1
$ 56.1
$ 57.4

September 30, 2017 December 31, 2016
Assets:
Fabricated Products $ 1,007.9
$ 969.4
All Other¹
414.8
474.1
Total assets $ 1,422.7
$ 1,443.5

~~_____________________~~


¹	~~Assets in All Other represent primarily all of our cash and cash equivalents, short-term investments, financial derivative assets (see Note 9) and net deferred income tax assets.~~

~~Net sales for the Fabricated Products segment by end market applications were as follows (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Net sales:
Aero/HS products $ 150.2
$ 156.1
$ 483.2
$ 500.7
Automotive Extrusions 52.7
46.5
161.6
143.6
GE products 115.9
105.6
361.1
318.3
Other products 14.0
12.4
38.5
36.1
Total net sales $ 332.8
$ 320.6
$ 1,044.4
$ 998.7

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~All income taxes are paid by the Fabricated Products reporting segment. Geographic information for income taxes paid was as follows (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Income taxes paid:
Domestic $ 0.3
$ 0.1
$ 0.7
$ 0.4
Foreign —
—
0.1
0.5
Total income taxes paid $ 0.3
$ 0.1
$ 0.8
$ 0.9

~~Concentrations~~. For the quarter ended September 30, 2017, one customer represented 27% and another represented 11% of Fabricated Products Net sales. For the quarter ended September 30, 2016, one customer represented 25% and another represented 11% of Fabricated Products Net Sales. For the nine months ended September 30, 2017, one customer represented 28% and another represented 10% of Fabricated Products Net sales. For the nine months ended September 30, 2016, one customer represented 26% and another represented 10% of Fabricated Products Net Sales.

At September 30, 2017, one customer represented 17% and a second customer represented 16% of Trade receivables, net. One individual customer accounted for 18% and two individual customers each accounted for 12% of Trade receivables, net at December 31, 2016.

~~Information for delivery of our primary aluminum supply from our major suppliers was as follows:~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Percentage of total primary aluminum supply (lbs):
Supply from our top five major suppliers 86 % 84 % 85 % 84 %
Supply from our largest supplier 35 % 28 % 36 % 32 %
Supply from our second and third largest suppliers 35 % 33 % 33 % 31 %

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~12. Supplemental Cash Flow Information~~

Nine Months Ended
September 30,
2017 2016
(In millions of dollars)
Interest paid $ 10.0
$ 6.7
Non-cash investing and financing activities (included in Accounts payable):
Unpaid purchases of property and equipment $ 3.4
$ 2.4
Stock repurchases not yet settled $ —
$ 0.2
Acquisition of property and equipment through capital leasing arrangements $ 0.3
$ —

Components of cash, cash equivalents and restricted cash: September 30, 2017
September 30, 2016
Cash and cash equivalents $ 73.9
$ 72.9
Restricted cash included in Prepaid expenses and other current assets¹
0.3
0.3
Restricted cash included in Other assets¹
12.9
11.7
Total cash, cash equivalents and restricted cash shown in the Statements of Consolidated Cash Flows $ 87.1
$ 84.9

~~____________~~


¹	We are required to keep on deposit certain amounts that are pledged or held as collateral relating to workers' compensation and other agreements. We account for such deposits as restricted cash. From time to time, such restricted funds could be returned to us or we could be required to pledge additional cash.

~~13. Other Income (Expense), Net~~

~~Other income (expense), net, consisted of the following for each period presented (in millions of dollars):~~

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Interest income $ —
$ —
$ —
$ 0.1
Realized gain on investments 0.8
0.1
2.2
0.4
Loss on extinguishment of debt¹
—
—
—
(11.1 )
All other income (expense), net 0.7
(0.1 ) 0.9
0.2
Other income (expense), net $ 1.5
$ —
$ 3.1
$ (10.4 )

~~____________~~


¹	Represents the loss on extinguishment of our 8.25% Senior Notes during the nine months ended September 30, 2016, which included an $8.2 million premium paid to redeem the notes and a $2.9 million write-off of unamortized debt issuance costs associated with the notes.

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~14.~~

8. Accumulated Other Comprehensive ~~(Loss)~~ Income

The following table presents the changes in the accumulated balances for each component of ~~Accumulated other comprehensive (loss) income ("AOCI") for each period presented~~AOCI (in millions of dollars):


	Quarter Ended March 31,
	2024			2023
Defined Benefit Plans:
Beginning balance	$	11.0		$	2.8
Amortization of net actuarial gain1		(0.3	)		(0.3	)
Amortization of prior service (credit) cost1		(0.3	)		1.2
Less: income tax benefit (expense)2		0.1			(0.2	)
Other comprehensive (loss) income, net of tax		(0.5	)		0.7
Ending balance	$	10.5		$	3.5

Cash Flow Hedges:
Beginning balance	$	2.1		$	0.4
Unrealized loss on cash flow hedges		(4.2	)		(2.6	)
Less: income tax benefit		1.0			0.6
Net unrealized loss on cash flow hedges		(3.2	)		(2.0	)
Reclassification of unrealized loss upon settlement of cash flow hedges		2.1			0.2
Less: income tax expense2		(0.5	)		—
Net loss reclassified from AOCI to Net income		1.6			0.2
Other comprehensive loss, net of tax		(1.6	)		(1.8	)
Ending balance3	$	0.5		$	(1.4	)

Total AOCI ending balance	$	11.0		$	2.1

Amounts amortized out of AOCI related to pension and other postretirement benefits were included within Net periodic postretirement benefit cost (see Note 3).

Quarter Ended Nine Months Ended
September 30, September 30,
2017 2016 2017 2016
Salaried VEBA and defined benefit pension plan:
Beginning balance $ (35.4 ) $ (29.8 ) $ (37.1 ) $ (31.3 )
Amortization of net actuarial loss¹
0.2
0.1
0.6
0.3
Amortization of prior service cost¹
1.2
1.0
3.6
3.0
Less: income tax expense²
(0.5 ) (0.4 ) (1.6 ) (1.2 )
Net amortization reclassified from AOCI to Net income 0.9
0.7
2.6
2.1
Translation impact on Canadian pension plan AOCI balance (0.1 ) —
(0.1 ) 0.1
Other comprehensive income, net of tax 0.8
0.7
2.5
2.2
Ending balance $ (34.6 ) $ (29.1 ) $ (34.6 ) $ (29.1 )

Available for sale securities:
Beginning balance $ 1.1
$ 0.2
$ 0.8
$ (0.1 )
Unrealized gain on available for sale securities 1.0
0.9
3.1
1.3
Less: income tax expense (0.4 ) (0.4 ) (1.2 ) (0.5 )
Net unrealized gain on available for sale securities 0.6
0.5
1.9
0.8
Reclassification of unrealized gain upon sale of available for sale securities³
(0.5 ) (0.3 ) (2.1 ) (0.3 )
Less: income tax benefit²
0.2
0.1
0.8
0.1
Net unrealized gain reclassified from AOCI to Net income (0.3 ) (0.2 ) (1.3 ) (0.2 )
Other comprehensive income, net of tax 0.3
0.3
0.6
0.6
Ending balance $ 1.4
$ 0.5
$ 1.4
$ 0.5

Other:
Beginning balance $ —
$ (0.3 ) $ (0.4 ) $ (0.3 )
Unrealized gain 1.1
0.1
1.4
0.2
Less: income tax expense (0.4 ) —
(0.5 ) (0.1 )
Net gain 0.7
0.1
0.9
0.1
Gain reclassified from AOCI to Net income (0.3 ) —
—
—
Less: income tax benefit²
0.1
—
—
—
Net gain reclassified from AOCI to Net income (0.2 ) —
—
—
Other comprehensive income, net of tax 0.5
0.1
0.9
0.1
Ending balance $ 0.5
$ (0.2 ) $ 0.5
$ (0.2 )

Total AOCI ending balance $ (32.7 ) $ (28.8 ) $ (32.7 ) $ (28.8 )
2.

Income tax amounts reclassified out of AOCI were included as a component of Income tax provision.

~~________________~~3.

As of March 31, 2024, we estimate a net mark-to-market gain before tax of $0.5 million in AOCI will be reclassified into Net income upon settlement within the next 12 months.


¹	~~Amounts reclassified out of AOCI relating to Salaried VEBA adjustments were included as a component of Net periodic postretirement benefit cost relating to Salaried VEBA.~~


²	~~Income tax amounts reclassified out of AOCI were included as a component of Income tax provision.~~

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

9. Other Income, Net

The following table presents the components of Other income, net (in millions of dollars):


	Quarter Ended March 31,
	2024			2023
Interest income	$	0.9		$	0.4
Net periodic postretirement benefit cost		(0.3	)		(2.0	)
Unrealized gain on equity securities		0.2			0.1
(Loss) gain on disposition of property, plant and equipment		(0.2	)		15.0
Gain on business interruption insurance recoveries1		10.5			—
All other, net		(0.2	)		0.1
Other income, net	$	10.9		$	13.6

Represents advances against business interruption insurance claims. We recognize such advances in the period in which the insurance proceeds are received or become realizable.As of March 31, 2024, we received net cash proceeds of $9.7 million on the $10.5 million total gain recognized to date.

Supply Chain Financing. We are party to several supply chain financing arrangements, in which we may sell certain of our customers’ trade accounts receivable to such customers’ financial institutions without recourse. During the quarters ended March 31, 2024 and March 31, 2023, we sold trade accounts receivable totaling $267.1 million and $303.2 million, respectively, related to these supply chain financing arrangements, of which our customers’ financial institutions applied discount fees totaling $6.3 million and $7.2 million, respectively. To the extent discount fees related to the sale of trade accounts receivable under supply chain financing arrangements are not reimbursed by our customers, they are included in Other income, net. As of March 31, 2024, we had been and/or expected to be substantially reimbursed by our customers for these discount fees, in accordance with the underlying sales agreements.


³	Amounts reclassified out of AOCI relating to sales of available for sale securities were included as a component of Other income (expense), net. We use the specific identification method to determine the amount reclassified out of AOCI.

~~15. Condensed Guarantor~~

10. Income Tax Matters

The following table presents the income tax provision by region (in millions of dollars):


	Quarter Ended March 31,
	2024			2023
Domestic	$	(7.0	)	$	(4.4	)
Foreign		(0.5	)		(0.5	)
Total	$	(7.5	)	$	(4.9	)

The income tax provision for the quarters ended March 31, 2024 and ~~Non-Guarantor Financial Information~~March 31, 2023 was $7.5 million and $4.9 million, respectively, reflecting an effective tax rate of 23% and 24%, respectively. There was no material difference between the effective tax rate and the blended statutory tax rate for the quarters ended March 31, 2024 and March 31, 2023, respectively.

Our gross unrecognized benefits relating to uncertain tax positions were $7.5 million and $6.5 million at March 31, 2024 and December 31, 2023, respectively, of which, $7.5 million and $6.5 million would be recorded through our income tax provision and thus, impact the effective tax rate at March 31, 2024 and December 31, 2023, respectively, if the gross unrecognized tax benefits were to be recognized.

We do not expect our gross unrecognized tax benefits to significantly change within the next 12 months.

~~During~~

11. Net Income Per Share

Basic net income per share is computed by dividing distributed and undistributed net income allocable to common shares by the weighted-average number of common shares outstanding during the applicable period. The basic weighted-average number of common shares outstanding during the period excludes non-vested share-based payment awards. Basic and diluted net income per share was calculated under the two-class method for the quarter ended ~~June 30, 2016, we issued $375.0 million aggregate principal amount of our 5.875% Senior Notes~~March 31, 2024 and ~~redeemed in full~~ the remaining principal balance of our 8.25% Senior Notes. The 5.875% Senior Notes were issued by Kaiser Aluminum Corporation ("Parent") pursuant to an indenture dated May 12, 2016 ("Indenture") with Wells Fargo Bank, National Association, as trustee ("Trustee"). The obligations of the Parent under the Indenture are guaranteed by Kaiser Aluminum Investments Company, Kaiser Aluminum Fabricated Products, LLC and Kaiser Aluminum Washington, LLC, ("Guarantor Subsidiaries"). An additional Guarantor Subsidiary, Kaiser Aluminum Alexco, LLC, merged with and into Kaiser Aluminum Fabricated Products, LLC during the first quarter of 2017. All Guarantor Subsidiaries are ~~100%~~ owned by the Parent. The guarantees are full and unconditional and joint and several but have customary releases in the following situations: (i) the sale of the Guarantor Subsidiary or all of its assets; (ii) the declaration of a Guarantor Subsidiary as an unrestricted subsidiary under the Indenture; (iii) the termination or release of the Guarantor Subsidiary's guarantee of certain other indebtedness; or (iv) our exercise of legal defeasance or covenant defeasance or the discharge of our obligations under the Indenture.

~~The following condensed consolidating financial information as of~~ ~~September 30, 2017~~ ~~and~~ ~~December 31, 2016, and~~treasury method for the ~~quarters and nine months~~quarter ended ~~September 30, 2017~~ ~~and~~ ~~September 30, 2016present: (i)~~March 31, 2023, which was more dilutive than the financial position, results of operation and cash flows for each of (a) Parent, (b) the Guarantor Subsidiaries on a combined basis and (c) the Non-Guarantor Subsidiaries on a combined basis; (ii) the "Consolidating Adjustments," which represent the adjustments necessary to eliminate the investments in our subsidiaries, other intercompany balances and other intercompany sales and cost of sales among Parent, the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries; and (iii) the resulting totals, reflecting information for us on a consolidated basis, as reported. The condensed consolidating financial information should be read in conjunction with the consolidated financial statements herein.

two-class method.

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

~~CONDENSED CONSOLIDATING BALANCE SHEET~~

~~(In~~

The following table sets forth the computation of basic and diluted net income per share (in millions of ~~dollars)~~

dollars, except share and per share amounts):


	Quarter Ended March 31,
	2024		2023
Numerator:
Net income available to common shareholders1	$	24.6	$	15.9
Denominator – Weighted-average common shares outstanding (in thousands):
Basic		16,027		15,940
Add: dilutive effect of non-vested common shares, restricted stock units and performance shares2		203		156
Diluted		16,230		16,096

Net income per common share, Basic:	$	1.53	$	1.00
Net income per common share, Diluted:	$	1.51	$	0.99

~~September 30, 2017~~1.

Represents Net income less distributed and undistributed earnings allocated to non-vested RSAs that contain non-forfeitable rights to dividends.

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
ASSETS
Current assets:
Cash and cash equivalents $ —
$ 70.7
$ 3.2
$ —
$ 73.9
Short-term investments —
191.4
—
—
191.4
Receivables:
Trade receivables, net —
133.1
5.1
—
138.2
Intercompany loans receivable 55.6
0.1
0.6
(56.3 ) —
Other —
14.6
0.8
—
15.4
Inventories —
208.5
8.6
(4.9 ) 212.2
Prepaid expenses and other current assets 0.1
31.0
0.4
—
31.5
Total current assets 55.7
649.4
18.7
(61.2 ) 662.6
Investments in and advances to subsidiaries 1,107.0
41.9
—
(1,148.9 ) —
Property, plant and equipment, net —
527.6
30.2
—
557.8
Long-term intercompany loans receivable —
—
10.5
(10.5 ) —
Deferred tax assets, net —
113.9
—
4.8
118.7
Intangible assets, net —
25.3
—
—
25.3
Goodwill —
18.8
—
—
18.8
Other assets —
39.5
—
—
39.5
Total $ 1,162.7
$ 1,416.4
$ 59.4
$ (1,215.8 ) $ 1,422.7
LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
Accounts payable $ 1.4
$ 86.8
$ 6.2
$ —
$ 94.4
Intercompany loans payable —
56.2
0.1
(56.3 ) —
Accrued salaries, wages and related expenses —
37.2
1.8
—
39.0
Other accrued liabilities 8.3
41.0
1.1
(7.1 ) 43.3
Total current liabilities 9.7
221.2
9.2
(63.4 ) 176.7
Net liabilities of Salaried VEBA —
27.8
—
—
27.8
Deferred tax liabilities —
—
3.3
—
3.3
Long-term intercompany loans payable —
10.5
—
(10.5 ) —
Long-term liabilities —
59.3
2.6
—
61.9
Long-term debt 369.4
—
—
—
369.4
Total liabilities 379.1
318.8
15.1
(73.9 ) 639.1

Total stockholders' equity 783.6
1,097.6
44.3
(1,141.9 ) 783.6
Total $ 1,162.7
$ 1,416.4
$ 59.4
$ (1,215.8 ) $ 1,422.7
2.

Quantities in the following discussion are denoted in whole shares. During the quarters ended March 31, 2024 and March 31, 2023, approximately 2,200 and 11,000 shares, respectively, were excluded from the weighted-average diluted shares computation as their inclusion would have been anti‑dilutive.

12. Supplemental Cash Flow Information


	Quarter Ended March 31,
	2024		2023
	(In millions of dollars)
Interest paid	$	10.3	$	10.6
Non-cash investing and financing activities (included in Accounts payable):
Unpaid purchases of property and equipment	$	19.5	$	28.8

Supplemental lease disclosures:
Operating lease liabilities arising from obtaining operating lease assets	$	—	$	2.4
Cash paid for amounts included in the measurement of operating lease liabilities	$	2.1	$	2.4
Finance lease liabilities arising from obtaining finance lease assets	$	1.0	$	8.8


	As of March 31,
	2024		2023
	(In millions of dollars)
Components of cash, cash equivalents and restricted cash:
Cash and cash equivalents	$	101.6	$	31.5
Restricted cash included in Other assets1		18.3		18.6
Total cash, cash equivalents and restricted cash presented on our Statements of Consolidated Cash Flows	$	119.9	$	50.1

We are required to keep on deposit certain amounts that are pledged or held as collateral relating to workers’ compensation and other agreements. We account for such deposits as restricted cash. From time to time, such restricted funds could be returned to us or we could be required to pledge additional cash.

13. Business, Product, and Geographical Area Information

Our primary line of business is the production of semi-fabricated specialty aluminum mill products, such as plate and sheet, bare and coated coils, and extruded and drawn products, primarily used in our Aero/HS Products, Packaging, GE Products, Automotive Extrusions, and Other products end markets. We operate 13 focused production facilities in the United States and one in Canada. Our chief operating decision maker reviews and evaluates our business as a single operating segment.

Notes Index

KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES

NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS -– UNAUDITED

~~CONDENSED CONSOLIDATING BALANCE SHEET~~

~~(In~~

The following table presents Net sales by end market applications and by timing of control transfer (in millions of dollars):


	Quarter Ended March 31,
	2024		2023
Net sales:
Aero/HS Products	$	220.5	$	214.0
Packaging		298.1		354.2
GE Products		153.0		162.1
Automotive Extrusions		63.5		70.8
Other products		2.4		6.5
Total net sales	$	737.5	$	807.6

Timing of revenue recognition:
Products transferred at a point in time	$	569.4	$	624.8
Products transferred over time		168.1		182.8
Total net sales	$	737.5	$	807.6

~~December 31, 2016~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
ASSETS
Current assets:
Cash and cash equivalents $ —
$ 52.9
$ 2.3
$ —
$ 55.2
Short-term investments —
231.0
—
—
231.0
Receivables:
Trade receivables, net —
133.1
4.6
—
137.7
Intercompany receivables 85.8
0.1
0.6
(86.5 ) —
Other —
11.4
0.5
—
11.9
Inventories —
197.5
8.0
(3.9 ) 201.6
Prepaid expenses and other current assets 0.1
18.0
0.9
(0.5 ) 18.5
Total current assets 85.9
644.0
16.9
(90.9 ) 655.9
Investments in and advances to subsidiaries 1,012.4
40.1
—
(1,052.5 ) —
Property, plant and equipment, net —
499.5
31.4
—
530.9
Long-term intercompany receivables 80.2
—
4.9
(85.1 ) —
Deferred tax assets, net —
154.9
—
4.8
159.7
Intangible assets, net —
26.4
—
—
26.4
Goodwill —
37.2
—
—
37.2
Other assets —
33.4
—
—
33.4
Total $ 1,178.5
$ 1,435.5
$ 53.2
$ (1,223.7 ) $ 1,443.5
LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
Accounts payable $ 2.2
$ 68.9
$ 4.7
$ —
$ 75.8
Intercompany payable —
86.4
0.1
(86.5 ) —
Accrued salaries, wages and related expenses —
47.2
1.9
—
49.1
Other accrued liabilities 2.9
52.6
(0.7 ) (14.7 ) 40.1
Total current liabilities 5.1
255.1
6.0
(101.2 ) 165.0
Net liabilities of Salaried VEBA —
28.6
—
—
28.6
Deferred tax liabilities —
—
3.3
—
3.3
Long-term intercompany payable —
85.1
—
(85.1 ) —
Long-term liabilities —
70.5
2.7
—
73.2
Long-term debt 368.7
—
—
—
368.7
Total liabilities 373.8
439.3
12.0
(186.3 ) 638.8

Total stockholders' equity 804.7
996.2
41.2
(1,037.4 ) 804.7
Total $ 1,178.5
$ 1,435.5
$ 53.2
$ (1,223.7 ) $ 1,443.5

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME~~

~~(In~~

The following table presents geographic information for income taxes paid (in millions of dollars)

~~Quarter Ended~~ ~~September 30, 2017~~


	Quarter Ended March 31,
	2024		2023
Income taxes paid:
Domestic	$	—	$	0.1
Foreign		1.6		0.2
Total income taxes paid	$	1.6	$	0.3

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Net sales $ —
$ 325.9
$ 26.3
$ (19.4 ) $ 332.8
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items —
261.6
24.0
(18.4 ) 267.2
Unrealized gain on derivative instruments —
(10.8 ) —
—
(10.8 )
Depreciation and amortization —
9.7
0.5
—
10.2
Selling, general, administrative, research and development:
Selling, general, administrative, research and development 1.0
23.5
0.8
(0.6 ) 24.7
Net periodic postretirement benefit cost relating to Salaried VEBA —
1.2
—
—
1.2
Loss on removal of Union VEBA net assets —
0.5
—
—
0.5
Total selling, general, administrative, research and development 1.0
25.2
0.8
(0.6 ) 26.4
Total costs and expenses 1.0
285.7
25.3
(19.0 ) 293.0
Operating (loss) income (1.0 ) 40.2
1.0
(0.4 ) 39.8
Other (expense) income:
Interest expense (5.0 ) (0.4 ) —
0.1
(5.3 )
Other income, net —
1.3
0.3
(0.1 ) 1.5
(Loss) income before income taxes (6.0 ) 41.1
1.3
(0.4 ) 36.0
Income tax provision —
(18.0 ) (0.4 ) 2.3
(16.1 )
Earnings in equity of subsidiaries 25.9
0.6
—
(26.5 ) —
Net income $ 19.9
$ 23.7
$ 0.9
$ (24.6 ) $ 19.9

Comprehensive income $ 21.5
$ 25.3
$ 0.9
$ (26.2 ) $ 21.5

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME~~

~~(In millions of dollars)~~

~~Nine Months Ended September 30, 2017~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Net sales $ —
$ 1,019.7
$ 85.4
$ (60.7 ) $ 1,044.4
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items —
805.8
75.0
(58.1 ) 822.7
Unrealized gain on derivative instruments —
(14.0 ) —
—
(14.0 )
Depreciation and amortization —
27.7
1.6
—
29.3
Selling, general, administrative, research and development:
Selling, general, administrative, research and development 3.4
67.2
5.7
(1.6 ) 74.7
Net periodic postretirement benefit cost relating to Salaried VEBA —
3.4
—
—
3.4
Gain on removal of Union VEBA net assets —
(0.8 ) —
—
(0.8 )
Total selling, general, administrative, research and development 3.4
69.8
5.7
(1.6 ) 77.3
Goodwill impairment —
18.4
—
—
18.4
Total costs and expenses 3.4
907.7
82.3
(59.7 ) 933.7
Operating (loss) income (3.4 ) 112.0
3.1
(1.0 ) 110.7
Other (expense) income:
Interest expense (15.3 ) (1.2 ) —
0.1
(16.4 )
Other income, net —
2.7
0.5
(0.1 ) 3.1
(Loss) income before income taxes (18.7 ) 113.5
3.6
(1.0 ) 97.4
Income tax provision —
(43.0 ) (0.9 ) 7.1
(36.8 )
Earnings in equity of subsidiaries 79.3
1.8
—
(81.1 ) —
Net income $ 60.6
$ 72.3
$ 2.7
$ (75.0 ) $ 60.6

Comprehensive income $ 64.6
$ 76.3
$ 2.7
$ (79.0 ) $ 64.6

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME~~

~~(In millions of dollars)~~

~~Quarter Ended September 30, 2016~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Net sales $ —
$ 313.9
$ 26.6
$ (19.9 ) $ 320.6
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items —
250.0
23.7
(19.0 ) 254.7
Unrealized gain on derivative instruments —
(2.0 ) —
—
(2.0 )
Depreciation and amortization —
8.5
0.5
—
9.0
Selling, general, administrative, research and development:
Selling, general, administrative, research and development 0.9
24.0
1.3
(0.6 ) 25.6
Net periodic postretirement benefit cost relating to Salaried VEBA —
0.8
—
—
0.8
Total selling, general, administrative, research and development 0.9
24.8
1.3
(0.6 ) 26.4
Other operating charges, net —
2.7
—
—
2.7
Total costs and expenses 0.9
284.0
25.5
(19.6 ) 290.8
Operating (loss) income (0.9 ) 29.9
1.1
(0.3 ) 29.8
Other (expense) income:
Interest (expense) income (5.7 ) 0.1
—
0.1
(5.5 )
Other (expense) income, net (0.1 ) 0.1
0.1
(0.1 ) —
(Loss) income before income taxes (6.7 ) 30.1
1.2
(0.3 ) 24.3
Income tax provision —
(11.6 ) (0.3 ) 2.5
(9.4 )
Earnings in equity of subsidiaries 21.6
0.7
—
(22.3 ) —
Net income $ 14.9
$ 19.2
$ 0.9
$ (20.1 ) $ 14.9

Comprehensive income $ 16.0
$ 20.3
$ 0.9
$ (21.2 ) $ 16.0

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME~~

~~(In millions of dollars)~~

~~Nine Months Ended September 30, 2016~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Net sales $ —
$ 976.9
$ 80.6
$ (58.8 ) $ 998.7
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items —
753.1
70.3
(56.3 ) 767.1
Lower of cost or market inventory write-down —
4.9
—
—
4.9
Unrealized gain on derivative instruments —
(16.9 ) —
—
(16.9 )
Depreciation and amortization —
25.2
1.5
—
26.7
Selling, general, administrative, research and development:
Selling, general, administrative, research and development 3.3
71.4
6.5
(2.0 ) 79.2
Net periodic postretirement benefit cost relating to Salaried VEBA —
2.5
—
—
2.5
Gain on removal of Union VEBA net assets —
(0.1 ) —
—
(0.1 )
Total selling, general, administrative, research and development 3.3
73.8
6.5
(2.0 ) 81.6
Other operating charges, net —
2.8
—
—
2.8
Total costs and expenses 3.3
842.9
78.3
(58.3 ) 866.2
Operating (loss) income (3.3 ) 134.0
2.3
(0.5 ) 132.5
Other (expense) income:
Interest (expense) income (15.9 ) 1.1
—
0.1
(14.7 )
Other (expense) income, net (11.1 ) 0.6
0.2
(0.1 ) (10.4 )
(Loss) income before income taxes (30.3 ) 135.7
2.5
(0.5 ) 107.4
Income tax provision —
(51.1 ) (0.7 ) 11.6
(40.2 )
Earnings in equity of subsidiaries 97.5
1.3
—
(98.8 ) —
Net income $ 67.2
$ 85.9
$ 1.8
$ (87.7 ) $ 67.2

Comprehensive income $ 70.1
$ 88.7
$ 1.9
$ (90.6 ) $ 70.1

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS~~

~~(In millions of dollars)~~

~~Nine Months Ended September 30, 2017~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Cash flows from operating activities:
Net cash (used in) provided by operating activities $ (12.8 ) $ 137.4
$ 6.9
$ —
$ 131.5
Cash flows from investing activities:
Capital expenditures —
(55.7 ) (0.4 ) —
(56.1 )
Purchase of available for sale securities —
(196.0 ) —
—
(196.0 )
Proceeds from disposition of available for sale securities —
237.2
—
—
237.2
Proceeds from disposal of property, plant and equipment —
0.6
—
—
0.6
Intercompany loans receivable 110.4
—
(5.6 ) (104.8 ) —
Net cash provided by (used in) investing activities 110.4
(13.9 ) (6.0 ) (104.8 ) (14.3 )
Cash flows from financing activities:
Repayment of capital lease —
(0.2 ) —
—
(0.2 )
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (4.5 ) —
—
—
(4.5 )
Repurchase of common stock (66.7 ) —
—
—
(66.7 )
Cash dividends and dividend equivalents paid (26.4 ) —
—
—
(26.4 )
Intercompany loans payable —
(104.8 ) —
104.8
—
Net cash used in financing activities (97.6 ) (105.0 ) —
104.8
(97.8 )
Net increase in cash, cash equivalents and restricted cash during the period —
18.5
0.9
—
19.4
Cash, cash equivalents and restricted cash at beginning of period —
65.1
2.6
—
67.7
Cash, cash equivalents and restricted cash at end of period $ —
$ 83.6
$ 3.5
$ —
$ 87.1

~~KAISER ALUMINUM CORPORATION AND SUBSIDIARY COMPANIES~~

~~NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED~~

~~CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS~~

~~(In millions of dollars)~~

~~Nine Months Ended September 30, 2016~~

Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated
Cash flows from operating activities:
Net cash provided by operating activities $ 189.7
$ 109.3
$ 8.4
$ (200.0 ) $ 107.4
Cash flows from investing activities:
Capital expenditures —
(55.6 ) (1.8 ) —
(57.4 )
Purchase of available for sale securities —
(201.1 ) —
—
(201.1 )
Proceeds from disposition of available for sale securities —
30.0
—
—
30.0
Intercompany loans receivable¹
(205.6 ) 106.0
(3.7 ) 103.3
—
Net cash (used in) provided by in investing activities (205.6 ) (120.7 ) (5.5 ) 103.3
(228.5 )
Cash flows from financing activities:
Repayment of principal and redemption premium of 8.25% Senior Notes (206.0 ) —
—
—
(206.0 )
Issuance of 5.875% Senior Notes 375.0
—
—
—
375.0
Cash paid for debt issuance costs (6.8 ) —
—
—
(6.8 )
Proceeds from stock option exercises 1.0
—
—
—
1.0
Repayment of capital lease —
—
(0.1 ) —
(0.1 )
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares (2.8 ) —
—
—
(2.8 )
Repurchase of common stock (13.6 ) —
—
—
(13.6 )
Cash dividends and dividend equivalents paid (24.4 ) —
—
—
(24.4 )
Cash dividends paid to Parent —
(200.0 ) —
200.0
—
Intercompany loans payable¹
(106.5 ) 209.3
0.5
(103.3 ) —
Net cash provided by financing activities 15.9
9.3

0.4
—
96.7
—
122.3
Net (decrease) increase in cash, cash equivalents and restricted cash during the period —
(2.1 ) 3.3
—
1.2
Cash, cash equivalents and restricted cash at beginning of period —
83.0
0.7
—
83.7
Cash, cash equivalents and restricted cash at end of period $ —
$ 80.9
$ 4.0
$ —
$ 84.9

~~________________~~

As a result of the Parent's additional liquidity associated with the 5.875% Senior Notes (see Note 3), we classify all intercompany receivables and payables as Intercompany loans receivable and Intercompany loans payable, respectively, and therefore categorize changes in these balances within the investing and financing sections, respectively, of the Condensed Consolidating Statement of Cash Flows.

~~16.~~

14. Subsequent Events

Dividend ~~Declaration~~. Declaration. On ~~October 12, 2017,~~April 15, 2024, we announced that our Board of Directors declared a quarterly cash dividend of ~~$0.50~~$0.77 per common share. As such, we expect to pay approximately ~~$8.5~~$12.7 million (including dividend equivalents) on or about ~~November~~May 15, ~~2017~~2024 to stockholders of record and the holders of certain restricted stock units at the close of business on ~~October~~April 25, ~~2017.~~2024.

Item 2.Management'’s Discussion and Analysis of Financial Condition and Results of Operations

Forward-Looking Statements

This ~~Item should be read in conjunction with Part I, Item 1.~~ "~~Financial Statements~~" ~~of this~~ Quarterly Report on Form 10-Q ~~(this~~ "~~Report~~").

~~This Report~~ contains statements which constitute "“forward-looking statements"” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements appear throughout this Report and can be identified by the use of forward-looking terminology such as "“believes,""”“expects,""”“may,""”“estimates,""”“will,""”“should,""”“plans"” or "“anticipates,"” or the negative of the foregoing or other variations of comparable terminology, or by discussions of strategy. Readers are cautioned that any such ~~forward-looking~~forward‑looking statements are not guarantees of future performance and involve significant risks and uncertainties and that actual results may vary from those in the forward-looking statements as a result of various factors. These factors include: (i) the effectiveness of ~~management~~'smanagement’s strategies and ~~decisions;~~decisions, including strategic investments, capital spending strategies, cost reduction initiatives, sourcing strategies, processes and countermeasures implemented to address operational and supply chain challenges and the execution of those strategies; (ii) general economic and business conditions, including the impact of geopolitical factors and governmental and other actions taken in response, cyclicality, reshoring, labor challenges, supply interruptions, customer disruptions, and other conditions that impact demand drivers in the ~~aerospace, automotive~~Aero/HS Products, Packaging, GE Products, Automotive Extrusions and other end ~~market applications~~markets we serve; (iii) our ability to participate in mature and anticipated new automotive programs expected to launch in the future and successfully launch new automotive programs; (iv) changes or shifts in defense spending due to competing national priorities; (v) pricing, market conditions and our ability to effectively execute commercial and labor strategies, pass through cost increases, including the institution of surcharges, and flex costs in response to inflation, volatile commodity costs and changing economic conditions; (vi) developments in technology; ~~(iv)~~(vii) the impact of our future earnings, cash flows, financial condition, capital requirements and other factors on our financial strength and flexibility; (viii) new or modified statutory or regulatory requirements; (ix) the successful integration of acquired operations and ~~(v) changing prices~~technologies and ~~market conditions.~~(x) stakeholders’, including regulators’, views regarding our sustainability goals and initiatives and the impact of factors outside of our control on such goals and initiatives. This Item ~~Part II, Item 1A. "Risk Factors" included in this Report~~ and Part I, Item 1A. "~~Risk Factors~~"“Risk Factors” included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2023, each identify other factors that could cause actual results to vary. No assurance can be given that these are all of the factors that could cause actual results to vary materially from the ~~forward-looking~~forward looking statements.

~~Management's~~

The following discussion and analysis of our financial condition and results of operations ("MD&A") is designed to provide a reader of our financial statements with a narrative from the perspective of our management on our financial condition, results of operations, liquidity and certain other factors that may affect our future results. Our MD&A is presented in the following sections:

~~Overview;~~

~~Highlights of the Quarter Ended~~ ~~September 30, 2017~~;

~~Results of Operations;~~

~~Liquidity and Capital Resources;~~

~~Contractual Obligations, Commercial Commitments and Off-Balance-Sheet Arrangements;~~

~~Critical Accounting Estimates and Policies;~~

~~New Accounting Pronouncements; and~~

~~Available Information.~~

~~Our MD&A~~ should be read in conjunction with ~~the consolidated financial statements and related notes included in~~ Part I, Item 1. ~~"Financial Statements"~~“Financial Statements” of this Report and ~~the~~our consolidated financial statements and related notes included in Part II, Item 8. ~~"Financial~~“Financial Statements and Supplementary ~~Data"~~Data” of our Annual Report on Form 10-K for the year ended December 31, ~~2016~~.

2023.

Non-GAAP Financial Measures

This information contains certain non-GAAP financial measures. A non-GAAP financial measure is defined as a numerical measure of a company’s financial performance that excludes or includes amounts so as to be different than the most directly comparable measure calculated and presented in accordance with GAAP in the statements of income, balance sheets or statements of cash flows of the company. We have provided a reconciliation of non‑GAAP financial measures to the most directly comparable financial measure in the accompanying tables. We have also provided discussion of the reasons we believe that presentation of the non-GAAP financial measures provides useful information to investors, as well as any additional ways in which we use the non-GAAP financial measures. The non-GAAP financial measures used in the following discussions are Conversion Revenue (defined as Net sales less the Hedged Cost of Alloyed Metal, see below in “Metal Pricing Policies” discussion), Adjusted EBITDA and ratios related thereto. These measures are presented because management uses this information to monitor and evaluate financial results and trends and believes this information to also be useful for investors.

In the discussion of operating results below, we refer to certain items as ~~non-run-rate~~“non-run-rate items.” For purposes of such discussion, non-run-rate items are items that, while they may recur from period-to-period: (i) are particularly material to results; (ii) affect costs primarily as a result of external market factors; and (iii) may not recur in future periods if the same level of underlying performance were to occur. Non-run-rate items are part of our business and operating environment but are worthy of being highlighted for the benefit of readers of our financial statements. Our intent is to allow users of the financial statements to consider our results both in light of and separately from ~~items~~ such as unrealized mark-to-market gains or losses on derivatives related to fluctuations in underlying metal and energy prices and currency exchange rates, lower of cost or market inventory write-downs, non-cash impairments, the impact of discount rate changes on workers' compensation liabilities, legacy environmental expenses related to predecessor operations and gains or losses related to the voluntary employee beneficiary associations ("VEBAs").items. For a reconciliation of ~~operating~~Adjusted EBITDA to Net income, ~~(loss) excluding non-run-rate items to operating income (loss),~~ see ~~"Results~~below in “Results of Operations - ~~Segment~~Selected Operational and ~~Business Unit Information" below.~~

Financial Information.” Reconciliations of certain forward‑looking non-GAAP financial measures to comparable GAAP measures are not provided because certain items required for such reconciliations are outside of our control and/or cannot be reasonably predicted or provided without unreasonable effort.

Metal Pricing Policies

A fundamental part of our business model is to remain neutral to the impact from fluctuations in the market price for aluminum and certain alloys, thereby earning profit ~~predominately~~predominantly from the conversion of aluminum into semi-fabricated mill products. We refer to this as ~~metal~~“metal price neutrality.” We purchase primary, rolling ingot and scrap, or recycled, aluminum, our main raw material, and alloys at prices that fluctuate on a monthly basis, and our pricing policies generally allow us to pass the underlying index cost of ~~metal~~

aluminum and certain alloys through to our customers so that we remain neutral to metal pricing. ~~For~~However, for some of our higher ~~value added revenue~~margin products sold on a spot basis,

~~however,~~ competitive dynamics may limit the ~~pass through~~amount and/or delay the timing of selling price increases to recover our increased aluminum and alloy costs, resulting in a lag up to several months during which we may be exposed to metal price ~~movements~~risk. As a result, we can ~~lag by several months, with~~experience an adverse impact when aluminum and alloy prices increase, and a favorable impact to us when ~~metal~~aluminum and alloy prices decline, as we and ~~an adverse impact~~our competitors tend to ~~us when~~defer adjusting pricing unless market dynamics require such in a declining metal ~~prices increase. Additionally, we sometimes~~cost environment. We may also enter into firm-price customer sales agreements that specify a firm underlying metal price plus a conversion price. Spot sales with lagged ~~metal price metal~~aluminum and alloy price pass through and firm-price sales agreements create ~~metal~~ price exposure for us, which we mitigate through a hedging ~~program~~and related programs with an objective to remain metal price neutral.

Additionally, we have certain contracts that may adjust certain alloy prices for a forward period based on an average prior period cost for such alloys. As a result, until the selling price resets, we can experience an adverse impact when alloy prices increase and a favorable impact when alloy prices decrease.

Our pricing policies and hedging program are intended to significantly reduce or eliminate the impact on our profitability of fluctuations in underlying ~~metal~~ price of primary, rolling ingot and scrap, or recycled, aluminum, our main raw material, and certain alloys so that our earnings are predominantly associated with the conversion of aluminum to ~~semi-fabricated~~semi‑fabricated mill products. To allow users of our financial statements to consider the impact of ~~metal~~aluminum and alloy cost on our Net sales, we disclose Net sales as well as ~~value added revenue,~~Conversion Revenue, which is Net sales less the Hedged Cost of Alloyed Metal. ~~The Hedged~~As used in this discussion, “Hedged Cost of Alloyed ~~Metal~~Metal” is the cost of ~~our metal inputs~~aluminum at the ~~Midwest Transaction Price of aluminum ("Midwest Price")~~average MWTP plus the cost of alloying elements and any realized gains and/or losses on settled hedges related to the metal sold in the referenced period. The ~~Midwest Price~~average MWTP of aluminum reflects ~~supply and~~ the primary aluminum supply/demand dynamics ~~for primary aluminum~~ in North America. For a reconciliation of ~~value added revenue~~Conversion Revenue to Net sales, see ~~"Results~~below in “Results of Operations - ~~Segment~~Selected Operational and Financial Information.”

Business ~~Unit Information" below.~~

Overview

We manufacture and sell semi-fabricated specialty aluminum mill products for the following end market applications: ~~aerospace~~(i) Aero/HS Products; (ii) Packaging; (iii) GE Products; (iv) Automotive Extrusions; and ~~high strength ("Aero/HS products"); automotive ("Automotive Extrusions"); general engineering ("GE products"); and other industrial ("~~(v) Other ~~products").~~products. Our fabricated aluminum mill products include flat-rolled (plate, sheet and ~~sheet)~~coil), extruded (rod, bar, hollows and shapes), drawn (rod, bar, pipe, tube and wire) and certain cast aluminum products. The sophistication of our products is due to the metallurgy and physical properties of the metal and the special characteristics that are required for particular end uses. We strategically choose to serve technically challenging applications for which we can deploy our core metallurgical and process technology capabilities to produce highly engineered mill products with differentiated characteristics that present opportunities for us to receive premium pricing and to create long-term profitable growth.

With respect to the global market for flat-rolled aluminum mill products, our focus is on heat treat plate and sheet for applications that require higher strength and other desired product attributes that cannot be achieved by common alloy rolled products. The primary end market applications of flat-rolled heat treat plate and sheet, which are produced at Trentwood, are Aero/HS ~~products~~Products (which we sell globally) and GE ~~products~~Products (which we predominantly sell within North America). ~~Similarly,~~The primary end market application of bare and coated aluminum coil, which are produced at Warrick, is Packaging for can stock applications which we sell in North America. Our Packaging products require demanding attributes and can be further processed to include coating and slitting depending on customer specifications.

In the areas of aluminum extrusions, we focus on demanding Aero/HS ~~products,~~Products, GE Products, and Automotive Extrusions ~~and GE products~~ that require high strength, machinability or other specific properties where we can create and maintain a defensible competitive position because of our technical expertise, strong production capability and high product quality. ~~We primarily serve North American demand for extruded mill products.~~

~~Our rolling mill in Spokane, Washington ("Trentwood") produces heat treat plate and sheet for aerospace and general engineering end market applications.~~ Our 11 extrusion/drawing facilities, 10 of which are in the United States and one of which is in Canada, serve primarily North American demand for aerospace, ~~automotive or~~ general engineering, or automotive applications. Additionally, we have a facility in Columbia, New Jersey, that focuses on multi-material advanced manufacturing methods and techniques, which include multi-axis computer numerical control machining, additive manufacturing (“3D Printing”), welding and fabrication for demanding aerospace and defense, high tech, general industrial, and automotive applications. Our consolidated Net sales for the ~~nine months~~quarter ended ~~September 30, 2017,~~March 31, 2024 totaled ~~$1,044.4~~$737.5 million on ~~472.7~~291.0 million pounds shipped from ~~these 12 focused~~our facilities. We employed approximately ~~2,740~~4,000 people at ~~September 30, 2017.~~

March 31, 2024.

We have long-standing relationships with our customers, which consist primarily of blue-chip companies including leading aerospace and automotive manufacturers, tier one aerospace and automotive suppliers, food and beverage packaging manufacturers, and metal service centers. Approximately ~~50%~~75% of our shipments is sold direct to ~~the~~ manufacturers or tier one suppliers and approximately ~~50%~~25% is sold to metal service centers. In our served markets, we seek to be the supplier of choice by pursuing ~~"Best~~“Best in ~~Class"~~Class” customer satisfaction driven by quality, availability, service and delivery performance. We ~~strive to~~believe we differentiate our product portfolio through our broad product offering and our ~~KaiserSelect~~^{KaiserSelect®} products, which are engineered and manufactured to deliver enhanced product characteristics with improved consistency, so as to result in better performance, lower waste and, in many cases, lower production cost for our customers.

~~Overall,~~

Highlights of the aerospace and defense industries' consumption of fabricated aluminum products is driven by factors that include levels of airframe build rates, the mix of aircraft models being built and defense spending. Unanticipated changes in build rates and mix of aircraft models being built can trigger re-stocking or de-stocking throughout the long aerospace supply chain, temporarily impactingquarter ended March 31, 2024 include:

•

Strong demand for our Aero/HS ~~products. Growth~~Products within commercial aerospace, business jet, defense and space applications;

•

The ending of destocking in ~~demand for aerospace plate has exceeded demand growth for other forms~~our Packaging and GE Products end markets;

•

Improved cost controls and operating efficiencies across the platform; and

•

Cash dividends and dividend equivalents of ~~Aero/HS products as aircraft manufacturers have migrated to monolithic component design, where a single~~

~~piece of aluminum, usually a plate, is heavily machined to form a desired part rather than creating the same part by assembling sub-components made of aluminum sheet, extrusions~~$0.77 per share or forgings that are affixed to one another using rivets, bolts or welds. As more applications convert to monolithic design, we expect aerospace plate demand to continue to grow at a pace higher than our other Aero/HS products.

Demand for Automotive Extrusions is determined based upon automotive build rates in North America, increasing aluminum content by platform and consumer preference. In recent years, automotive original equipment manufacturers ("OEMs") and their suppliers have been converting many automotive components that historically were made of steel to aluminum to decrease weight without sacrificing structural integrity and safety performance and thereby achieve greater fuel efficiency standards mandated by stringent United States' Corporate Average Fuel Economy ("CAFE") regulations. We believe fuel efficiency standards along with consumer preference for larger vehicles will continue to drive growth in demand for aluminum extruded components in passenger vehicles as a replacement for the heavier weight of steel components. Our Automotive Extrusions are designed and produced to provide specific mechanical properties and performance attributes required in automotive applications across a broad mix of North American OEMs and automotive platforms. We believe that these attributes are not easily replicated by our competitors and are important to our customers, who are typically tier one automotive suppliers.

Demand growth and cyclicality for GE products tend to mirror broad economic patterns and industrial activity in North America. Demand is also impacted by the destocking and restocking of inventory throughout the supply chain.

~~Highlights of~~$12.6 million paid during the quarter ended ~~September 30, 2017 include:~~

Shipment increase compared to the quarter and nine months ended September 30, 2016 driven by strong demand for GE products and Automotive Extrusions, partially offset by the impact of continued aerospace supply chain destocking and a slower-than-anticipated ramp-up of new equipment and automated controls at Trentwood;

~~Compressed sales margins due to competitive pricing pressure;~~

~~Strong operational performance across our manufacturing platform;~~

~~Combined cash and cash equivalents, short-term investments and net borrowing availability under our Revolving Credit Facility of approximately $551.9 million as of September 30, 2017;~~

~~Cash dividend and dividend equivalents payment of $8.5 million; and~~

~~Repurchase of~~ ~~18,321~~ ~~shares of our common stock for $1.7 million at a weighted average price of~~ ~~$95.13~~.March 31, 2024.

Results of Operations

Consolidated Results of Operations

Net Sales. Net sales totaled ~~$332.8~~$737.5 million and ~~$320.6~~$807.6 million for the quarters ended ~~September 30, 2017~~March 31, 2024 and ~~September 30, 2016,~~March 31, 2023, respectively, reflecting ~~a 1% increase~~an 8.3 million pound decrease in ~~Fabricated Products segment~~ shipment volume and a ~~3% increase~~$0.17/lb (6%) decrease in average realized sales price per pound. ~~Fabricated Products segment~~The shipment volume ~~increased due primarily to:~~decrease reflected: (i) ~~a 1.9~~an 11.3 million pound ~~or 8%, increase~~(7%) decrease in Packaging reflecting the impact of destocking primarily of coated food packaging material; (ii) a 1.7 million pound (61%) decrease in Other products; and (iii) a 1.2 million pound (4%) decrease in Automotive Extrusions, ~~driven by significantly higher shipments~~partially offset by: (i) a 4.7 million pound (8%) increase in Aero/HS Products reflecting continued strong demand for ~~bumper programs~~commercial aerospace applications and (ii) a ~~1.3~~1.2 million pound ~~or 2%,~~(2%) increase in GE products reflecting the continued solid underlying demand for our GE applications, partially offset by a 2.1 million pound, or 4%, decrease in Aero/HS products due to aerospace supply chain destocking and a slower-than-anticipated ramp-up of newly installed equipment and controls at Trentwood.Products. The ~~increase in~~ average realized sales price per pound reflected a ~~$0.13/~~$0.20/lb ~~or 15%, increase~~(14%) decrease in the average Hedged Cost of Alloyed Metal prices per pound, partially offset by a $0.07/lb, or 5%, decrease in average value added revenue per pound. The decrease in average value added revenue per pound reflected: (i) competitive price pressure on spot sales of Aero/HS products and (ii) a leaner value added product mix with less volume of Aero/HS products and more volume of Automotive Extrusions and GE products. See the table in "~~Segment and Business Unit Information"~~ ~~below for further details.~~

Net sales totaled $1,044.4 million and $998.7 million for the nine months ended September 30, 2017 and September 30, 2016, respectively, reflecting a 2% increase in Fabricated Products segment shipment volume and a 2% increase in average realized sales price per pound. Fabricated Products segment shipment volume increased due primarily to: (i) a 12.6 million

pound, or 7%, increase in GE products reflecting the continued solid underlying demand for our GE applications and (ii) a 5.1 million pound, or 7%, increase in Automotive Extrusions primarily related to significantly higher bumper shipments, partially offset by a 6.4 million pound, or 4%, decrease in Aero/HS products due to: (i) aerospace supply chain destocking and (ii) temporary plate capacity constraints due to the installation of new equipment and controls at Trentwood in the second quarter of 2017 and the slower-than-anticipated ramp-up of newly installed Trentwood equipment and automation in the third quarter of 2017. The increase in average realized sales price per pound ~~reflected~~and a ~~$0.12/~~$0.03/lb ~~or 14%,~~(2%) increase in ~~average Hedged Cost of Alloyed Metal prices~~Conversion Revenue per pound partially offset by a $0.07/lb, or 5%, decrease in average value added revenue per pound. The decrease in average value added revenue per pound reflected competitive price pressure on spot sales of Aero/HSreflecting higher pricing and ~~GE products and, as discussed above, a leaner value added product~~improved mix. ~~See~~For further details, see the table below in "~~Segment~~“Selected Operational and ~~Business Unit Information"~~ ~~below for further details.~~

Fluctuation in the Midwest Price for primary aluminum does not necessarily directly impact profitability because: (i) a substantial portion of the business conducted by the Fabricated Products segment passes aluminum price changes directly onto customers and (ii) our hedging activities in support of the Fabricated Products segment's firm-price sales agreements limit our losses, as well as gains, from primary metal price changes.

~~Cost of Products Sold, Excluding Depreciation and Amortization and Other Items.~~ ~~Cost of products sold, excluding depreciation and amortization and other items~~Financial Information.”

COGS. COGS for the quarter ended ~~September 30, 2017~~March 31, 2024 totaled ~~$267.2~~$642.9 million, or ~~80%~~87% of Net sales, compared to ~~$254.7~~$731.1 million, or ~~79%~~91% of Net sales, for the quarter ended ~~September 30, 2016.~~March 31, 2023. The ~~increase~~decrease of ~~$12.5~~$88.2 million ~~was comprised of~~reflected a ~~$21.1~~$67.7 million ~~increase~~decrease in Hedged Cost of Alloyed Metal ~~partially offset by~~and a ~~$8.6~~$20.5 million ~~reduction~~decrease in net manufacturing conversion and other costs. Of the $67.7 million decrease in Hedged Cost of Alloyed Metal, $55.5 million was due to lower hedged metal prices and $12.2 million was due to lower shipment volume (see above in our “Net Sales” discussion for further details). The ~~reduction~~$20.5 million decrease in net manufacturing conversion and other costs reflected: (i) ~~a $3.3~~an $8.1 million ~~improvement in raw material costs~~decrease due to ~~favorable scrap pricing and usage;~~lower shipments; (ii) ~~$1.3~~a $7.5 million ~~of lower planned~~decrease in major maintenance ~~expense;~~costs driven by timing of annual planned maintenance programs; and (iii) a ~~$5.1~~$4.9 million decrease in ~~manufacturing, LIFO~~freight and other costs, partially offset by a $1.1 million increase in costs related to product mix. Of the $21.1 million increase in Hedged Cost of Alloyed Metal, $20.1 million was due to higher hedged metal prices and $1.0 million was due to higher shipment volume, as discussed in "~~Net Sales" above.~~

Cost of products sold, excluding depreciation and amortization and other items for the nine months ended September 30, 2017 totaled $822.7 million, or 79% of Net sales, compared to $767.1 million, or 77% of Net sales, for the nine months ended September 30, 2016. The increase of $55.6 million was comprised of a $65.1 million increase in Hedged Cost of Alloyed Metal, partially offset by a $9.5 million reduction in net manufacturing conversion and other costs. The reduction in net manufacturing conversion and other costs reflected: (i) a $9.3 million improvement in raw material costs due to favorable scrap pricing and usage; (ii) $1.1 million of lower planned major maintenance expense; and (iii) a $3.4 million decrease in manufacturing, LIFO and other costs, partially offset by a $4.5 million increase in costs related to higher shipment volume and product mix. Of the $65.1 million increase in Hedged Cost of Alloyed Metal, $56.7 million was due to higher hedged metal prices and $8.4 million was due to higher shipment volume, as discussed in "~~Net Sales" above. See "Segment and Business Unit Information"~~ ~~below for~~cost. For a further discussion of the comparative results of operations for the quarters ended March 31, 2024 and ~~nine months~~March 31, 2023, see below in “Selected Operational and Financial Information.”

Selling, General, Administrative, Research and Development (“SG&A and R&D”). SG&A and R&D expense totaled $32.6 million and $29.7 million for the quarters ended ~~September 30, 2017~~March 31, 2024 and ~~September 30, 2016.~~

~~Lower~~March 31, 2023, respectively. The increase during the quarter ended March 31, 2024 was primarily due to a $2.8 million increase in employee related costs.

Restructuring Costs. Restructuring costs of ~~Cost or Market Inventory Write-Down~~.$0.1 million and $1.4 million for the quarters ended March 31, 2024 and March 31, 2023, respectively, related to our restructuring plan initiated in 2022. See Note 14 of Notes to Interim Consolidated Financial Statements included in this Report for further information ~~on our inventory lower~~regarding the restructuring plan.

Other Operating Charges, Net. Other operating charge of ~~cost or market value adjustments.~~

~~Selling, General, Administrative, Research and Development (~~"~~SG&A and R&D~~"). ~~SG&A and R&D expense totaled $24.7 million and $25.6~~$0.4 million for the ~~quarters~~quarter ended ~~September 30, 2017 and September 30, 2016, respectively. The decrease was due primarily to a decrease in short-term incentive compensation expense based~~March 31, 2024 represents an impairment charge on ~~performance factors and modifiers.~~

~~SG&A and R&D expense totaled $74.7 million and $79.2 million~~land classified as held for sale during the nine months ended September 30, 2017 and September 30, 2016, respectively. The decrease was due primarily to a $3.9 million decrease in short-term incentive compensation expense based on performance factors and modifiers and a decrease in professional fees and services of $0.6 million.

~~Net Periodic Postretirement Benefit Cost Relating to Salaried VEBA.~~quarter.

Interest Expense. See Note 6 of Notes to Interim Consolidated Financial Statements included in this Report for ~~disclosure regarding~~a discussion of our debt and credit facilities that were in effect during the ~~Salaried VEBA~~quarters ended March 31, 2024 and ~~net periodic postretirement benefit cost relating thereto.~~

~~Goodwill Impairment.~~ March 31, 2023 and interest expense capitalized as part of construction in progress.

Other Income, Net.See Note 49 of Notes to Interim Consolidated Financial Statements included in this Report for details.

~~Interest Expense.~~ Interest expense represents cash and non-cash interest expense incurred on our 5.875% unsecured senior notes due May 15, 2024 ("5.875% Senior Notes"), our 8.25% unsecured senior notes, which were redeemed on June 1, 2016, and our revolving credit facility, net of capitalized interest. Interest expense was $5.3 million and $5.5 million for the quarters ended September 30, 2017 and September 30, 2016, respectively, net of $0.7 million and $0.6 million of interest expense capitalized as part of construction in progress, respectively.

Interest expense was $16.4 million and $14.7 million for the nine months ended September 30, 2017 and September 30, 2016, respectively, net of $1.9 million and $2.4 million of interest expense capitalized as part of construction in progress, respectively.

~~Other~~

Income ~~(Expense), Net.~~Tax Provision. See Note ~~13 of Notes to Interim Consolidated Financial Statements included in this Report for details.~~

~~Income Tax Provision.~~ ~~See Note 5~~10 of Notes to Interim Consolidated Financial Statements included in this Report for disclosure regarding our income tax provision.

~~Segment~~

Selected Operational and ~~Business Unit~~Financial Information

The following data should be read in conjunction with our consolidated financial statements and the notes thereto included in Part I, Item 1. ~~"Financial Statements"~~“Financial Statements” of this Report. Interim results are not necessarily indicative of those for a full year.

The table below provides selected operational and financial information (in millions of dollars):


	Quarter Ended March 31,
	2024			2023
Net income	$	24.6		$	15.9
Interest expense		11.5			11.9
Other income, net		(10.9	)		(13.6	)
Income tax provision		7.5			4.9
Depreciation and amortization		28.8			26.3
Non-run-rate items:
Restructuring costs		0.1			1.4
Mark-to-market gain on derivative instruments1		—			(0.1	)
Non-cash asset impairment charge		0.4			—
Environmental expenses2		0.4			—
Total non-run-rate items		0.9			1.3
Adjusted EBITDA	$	62.4		$	46.7

Mark-to-market gain on derivative instruments represents the gain on non-designated commodity hedges. Adjusted EBITDA reflects the realized gains related to these derivatives upon settlement.

Non-run-rate environmental expenses are related to legacy contingencies from activities at operating facilities prior to July 6, 2006. See Note 117 of Notes to Interim Consolidated Financial Statements included in this Report for ~~further~~additional information ~~regarding segments. Interim results are not necessarily indicative of those for a full year.~~

~~Fabricated Products~~

~~The table below provides selected operational and financial information for our Fabricated Products segment for each period presented (in millions of dollars):~~

relating to the environmental expenses.

Quarter Ended
September 30, Nine Months Ended
September 30,
2017 2016 2017 2016
Segment operating income $ 53.7
$ 42.1
$ 149.9
$ 172.1
Impact to segment operating income of non-run-rate items:
Adjustments to plant-level LIFO¹
(2.0 ) (4.1 ) (3.9 ) (2.2 )
Mark-to-market gain on derivative instruments 10.8
2.0
14.0
16.9
Non-cash lower of cost or market inventory write-down²
—
—
—
(4.9 )
Workers' compensation cost due to discounting 0.1
(0.1 ) (0.1 ) —
Goodwill impairment³
—
—
(18.4 ) —
Asset impairment charges³
—
(2.7 ) —
(2.8 )
Environmental expenses (0.2 ) —
(0.2 ) —
Total non-run-rate items 8.7
(4.9 ) (8.6 ) 7.0
Segment operating income excluding non-run-rate items $ 45.0
$ 47.0
$ 158.5
$ 165.1

~~_____________________~~


¹	We manage our Fabricated Products segment business on a monthly last-in, first-out ("LIFO") basis at each plant, but report inventory externally on an annual LIFO basis in accordance with GAAP on a consolidated basis. This amount represents the conversion from GAAP LIFO applied on a consolidated basis for the Fabricated Products segment to monthly LIFO applied on a plant-by-plant basis.


²	The $4.9 million lower of cost or market inventory write-down during the nine months ended September 30, 2016 was due primarily to a decrease in our net realizable value of inventory (less a normal profit margin).


³	See Note 4 of Notes to Interim Consolidated Financial Statements included in this Report for additional information relating to the impairment of goodwill and one of our customer relationship intangible assets.

~~As noted above, segment operating income excluding non-run-rate items~~

Adjusted EBITDA for the quarter ended ~~September 30, 2017~~March 31, 2024 was ~~$2.0~~$15.7 million ~~lower~~higher than ~~segment operating income excluding such items~~Adjusted EBITDA for the quarter ended September 30, 2016. Lower operating income excluding non-run-rate items reflected: (i) a $10.2 million unfavorable sales impact due primarily to a leaner product mix and lower sales margins, as discussed above and (ii) $1.3 million of higher depreciation and amortization expense, partially offsetMarch 31, 2023. Adjusted EBITDA for the quarter ended March 31, 2024 was impacted by: (i) ~~a $3.3 million improvement from favorable price spreads for scrap raw material purchases;~~improved pricing and mix; (ii) ~~$1.3 million~~improved operating efficiencies; (iii) lower cost of ~~lower planned~~ major maintenance ~~expense; and (iii) a $4.8 million improvement in net manufacturing conversion and other costs.~~

Segment operating income excluding non-run-rate items for the nine months ended September 30, 2017 was $6.6 million lower than segment operating income excluding such items for the nine months ended September 30, 2016. Lower operating income excluding non-run-rate items reflected: (i) a $23.9 million unfavorable sales impact due primarily to a leaner product mix and lower sales margins, as discussed above and (ii) $2.7 milliondriven by timing of higher depreciation and amortization expense, partially offset by: (i) a $9.3 million improvement from favorable price spreads for scrap raw material purchases; (ii) a $7.8 million improvement in net manufacturing conversion and other costs; (iii) $1.1 million of lowerannual planned ~~major~~ maintenance ~~expense;~~programs; and (iv) a ~~$1.8 million~~ decrease in freight costs, partially offset by an increase in employee benefit and incentive ~~compensation expense based on performance factors and modifiers.~~

costs. See above in “Consolidated Results of Operations” for further details.

The following table ~~below~~ provides our ~~Fabricated Products segment~~ shipment and ~~value added revenue~~Conversion Revenue information (in millions of dollars, except shipments and ~~value added revenue~~Conversion Revenue per pound) by end market ~~applications~~applications:


	Quarter Ended March 31,
	2024						2023
Aero/HS Products:
Shipments (mmlbs)	62.9						58.2
	$			$ / lb			$			$ / lb
Net sales	$	220.5		$	3.51		$	214.0		$	3.68
Less: Hedged Cost of Alloyed Metal		(84.0	)		(1.34	)		(91.6	)		(1.58	)
Conversion Revenue	$	136.5		$	2.17		$	122.4		$	2.10

Packaging:
Shipments (mmlbs)	142.4						153.7
	$			$ / lb			$			$ / lb
Net sales	$	298.1		$	2.09		$	354.2		$	2.30
Less: Hedged Cost of Alloyed Metal		(180.1	)		(1.26	)		(221.0	)		(1.43	)
Conversion Revenue	$	118.0		$	0.83		$	133.2		$	0.87

GE Products:
Shipments (mmlbs)	58.1						56.9
	$			$ / lb			$			$ / lb
Net sales	$	153.0		$	2.63		$	162.1		$	2.85
Less: Hedged Cost of Alloyed Metal		(72.8	)		(1.25	)		(82.2	)		(1.45	)
Conversion Revenue	$	80.2		$	1.38		$	79.9		$	1.40

Automotive Extrusions:
Shipments (mmlbs)	26.5						27.7
	$			$ / lb			$			$ / lb
Net sales	$	63.5		$	2.39		$	70.8		$	2.56
Less: Hedged Cost of Alloyed Metal		(32.4	)		(1.22	)		(39.6	)		(1.43	)
Conversion Revenue	$	31.1		$	1.17		$	31.2		$	1.13

Other Products:
Shipments (mmlbs)	1.1						2.8
	$			$ / lb			$			$ / lb
Net sales	$	2.4		$	2.18		$	6.5		$	2.32
Less: Hedged Cost of Alloyed Metal		(1.3	)		(1.18	)		(3.9	)		(1.39	)
Conversion Revenue	$	1.1		$	1.00		$	2.6		$	0.93

Total:
Shipments (mmlbs)	291.0						299.3
	$			$ / lb			$			$ / lb
Net sales	$	737.5		$	2.53		$	807.6		$	2.70
Less: Hedged Cost of Alloyed Metal1		(370.6	)		(1.27	)		(438.3	)		(1.47	)
Conversion Revenue	$	366.9		$	1.26		$	369.3		$	1.23

Hedged Cost of Alloyed Metal for ~~each period presented:~~

Quarter Ended
September 30, Nine Months Ended
September 30,
2017 2016 2017 2016
Aero/HS Products:
Shipments (mmlbs) 53.4 55.5 172.8 179.2
$ $ / lb $ $ / lb $ $ / lb $ $ / lb
Net sales $ 150.2
$ 2.81
$ 156.1
$ 2.81
$ 483.2
$ 2.80
$ 500.7
$ 2.79
Less: Hedged Cost of Alloyed Metal (51.8 ) (0.97 ) (47.5 ) (0.85 ) (162.7 ) (0.95 ) (152.7 ) (0.85 )
Value added revenue $ 98.4
$ 1.84
$ 108.6
$ 1.96
$ 320.5
$ 1.85
$ 348.0
$ 1.94

Automotive Extrusions:
Shipments (mmlbs) 24.5 22.6 75.9 70.8
$ $ / lb $ $ / lb $ $ / lb $ $ / lb
Net sales $ 52.7
$ 2.15
$ 46.5
$ 2.06
$ 161.6
$ 2.13
$ 143.6
$ 2.03
Less: Hedged Cost of Alloyed Metal (23.8 ) (0.97 ) (18.9 ) (0.84 ) (72.9 ) (0.96 ) (58.0 ) (0.82 )
Value added revenue $ 28.9
$ 1.18
$ 27.6
$ 1.22
$ 88.7
$ 1.17
$ 85.6
$ 1.21

GE Products:
Shipments (mmlbs) 64.1 62.8 203.1 190.5
$ $ / lb $ $ / lb $ $ / lb $ $ / lb
Net sales $ 115.9
$ 1.81
$ 105.6
$ 1.68
$ 361.1
$ 1.78
$ 318.3
$ 1.67
Less: Hedged Cost of Alloyed Metal (63.3 ) (0.99 ) (52.6 ) (0.84 ) (195.9 ) (0.97 ) (157.9 ) (0.83 )
Value added revenue $ 52.6
$ 0.82
$ 53.0
$ 0.84
$ 165.2
$ 0.81
$ 160.4
$ 0.84

Other Products:
Shipments (mmlbs) 7.6 7.4 20.9 22.1
$ $ / lb $ $ / lb $ $ / lb $ $ / lb
Net sales $ 14.0
$ 1.84
$ 12.4
$ 1.68
$ 38.5
$ 1.84
$ 36.1
$ 1.63
Less: Hedged Cost of Alloyed Metal (7.4 ) (0.97 ) (6.2 ) (0.84 ) (20.3 ) (0.97 ) (18.1 ) (0.82 )
Value added revenue $ 6.6
$ 0.87
$ 6.2
$ 0.84
$ 18.2
$ 0.87
$ 18.0
$ 0.81

Total:
Shipments (mmlbs) 149.6 148.3 472.7 462.6
$ $ / lb $ $ / lb $ $ / lb $ $ / lb
Net sales $ 332.8
$ 2.22
$ 320.6
$ 2.16
$ 1,044.4
$ 2.21
$ 998.7
$ 2.16
Less: Hedged Cost of Alloyed Metal (146.3 ) (0.97 ) (125.2 ) (0.84 ) (451.8 ) (0.96 ) (386.7 ) (0.84 )
Value added revenue $ 186.5
$ 1.25
$ 195.4
$ 1.32
$ 592.6
$ 1.25
$ 612.0
$ 1.32

~~For~~ the ~~quarter~~quarters ended ~~September 30, 2017,~~March 31, 2024 and March 31, 2023 included $367.1 million and $436.7 million, respectively, reflecting the cost of aluminum at the average MWTP and the cost of certain alloys used in the production process, as well as metal price exposure on shipments that we hedged with realized losses upon settlement of $3.5 million and $1.6 million in the quarters ended March 31, 2024 and March 31, 2023, respectively, all of which were included within both Net sales and COGS in our Statements of ~~Fabricated~~Consolidated Income. See Note 5 of Notes to Consolidated Financial Statements included in this Report for the total realized loss on aluminum hedges for which we hedged the metal price exposure externally.

Outlook

We remain well positioned in the current demand environment as a key supplier in diverse end markets with multi-year contracts with strategic partners. We expect demand will improve across the majority of our end markets throughout 2024. In Aero/HS Products, ~~increased by 4% to $332.8 million, as compared to~~a more cautious outlook is warranted on expected build rates for domestic large commercial jet production in the ~~quarter ended September 30, 2016, reflecting~~near-term resulting in anticipated flat conversion revenue in 2024 following a ~~1% increase in Fabricated Products segment shipment volume and a 3% increase in average realized sales price per pound, as discussed in further detail above in "Consolidated Results of Operations.~~"

For the nine months ended September 30, 2017, Net sales of Fabricated Products increased by 5% to $1,044.4 million, as compared to the nine months ended September 30, 2016, reflecting a 2% increase in Fabricated Products segment shipment

~~volume and a 2% increase in average realized sales price per pound, as discussed in further detail above in "Consolidated Results of Operations.~~"

~~Outlook~~

~~While our 2017~~strong 2023. The long-term demand outlook for ~~Automotive Extrusions and GE products~~these platforms remains ~~unchanged, we have lowered the outlook~~

unchanged. We believe demand for ~~our~~other Aero/HS ~~products due~~Products applications remains strong. Now that destocking is complete, we expect the rest of our end markets to ~~constraints on throughput during installation and ramp-up of new equipment and automated controls at Trentwood. For Automotive Extrusions,~~perform consistent with the prior outlook.

As a result, we continue to expect ~~double-digit year-over-year growth in shipments~~conversion revenue for the full year 2024 to improve 2% - 3% and ~~mid-single-digit growth in value added revenue~~Adjusted EBITDA margin to improve 70 - 170 basis points over 2023 as new product growth is predominantly in lower value added parts. As we have previously noted for our Aero/HS products, we anticipate headwinds from lower sales margins and commercial aerospace supply chain destocking will continue through the remainder of the year. While we had previously anticipated our Aero/HS products shipments would be comparable to 2016, we now expect our 2017 Aero/HS shipments will be lower than the prior year due to the slower-than-anticipated Trentwood ramp-up.

Longer term, we continue to anticipate solid Aero/HS products demand growth driven by military and commercial aircraft applications in both 2018 and 2019, with isolated instances of the supply chain inventory overhang lingering into 2018 to create a modest drag on overall industry demand growth. As demand strengthens and we implement ~~the improved~~cost reduction measures in operations, increase manufacturing ~~practices~~efficiencies, and capacity expansion at Trentwood, we expect increasing benefits from the new equipment and automated controls at Trentwood. Overall, we expect to enter 2018 well positioned to serve industry-wide demandpursue our strategic growth ~~across our served markets.~~

~~All Other~~

All Other provides support for our operations and incurs general and administrative expenses that are not allocated to the Fabricated Products segment. All Other is not considered a reportable segment. The table below presents the impact of non-run-rate items to operating loss within the All Other business unit for each period presented (in millions of dollars):

Quarter Ended
September 30, Nine Months Ended
September 30,
2017 2016 2017 2016
Operating loss $ (13.9 ) $ (12.3 ) $ (39.2 ) $ (39.6 )
Impact to operating loss of non-run-rate items:
Net periodic post retirement benefit cost relating to Salaried VEBA (1.2 ) (0.8 ) (3.4 ) (2.5 )
(Loss) gain on removal of Union VEBA net assets (0.5 ) —
0.8
0.1
Total non-run-rate items (1.7 ) (0.8 ) (2.6 ) (2.4 )
Operating loss excluding non-run-rate items $ (12.2 ) $ (11.5 ) $ (36.6 ) $ (37.2 )

All Other operating loss excluding non-run-rate items for the quarter ended September 30, 2017 was $0.7 million higher for the same period in 2016. The increase was due primarily to an increase in workers' compensation expense and other general and administrative expenses.

All Other operating loss excluding non-run-rate items for the nine months ended September 30, 2017, was $0.6 million lower than the comparable prior period in 2016 due primarily to a decrease in employee incentive compensation expense.

initiatives.

Liquidity and Capital Resources

Summary

The following table summarizes our liquidity ~~at the dates presented~~ (in millions of dollars):


	As of March 31, 2024		As of December 31, 2023
Available cash and cash equivalents	$	101.6	$	82.4
Borrowing availability under Revolving Credit Facility, net of letters of credit1		517.4		516.7
Total liquidity	$	619.0	$	599.1

Borrowing availability under the Revolving Credit Facility was determined by a borrowing base calculated as of March 31, 2024 and December 31, 2023.

September 30,
2017 December 31, 2016
Available cash and cash equivalents $ 73.9
$ 55.2
Short-term investments 191.4
231.0
Net borrowing availability under Revolving Credit Facility after letters of credit 286.6
275.3
Total liquidity $ 551.9
$ 561.5

~~Cash equivalents consist primarily of money market accounts and investments which, when purchased, have a maturity of 90 days or less.~~

We place our cash in bank deposits ~~and money market funds~~ with high credit quality financial institutions, which invest primarily in commercial paper and time deposits of prime quality, short-term repurchase agreements and U.S. government agency notes. Short-term investments represent holdings in investment-grade commercial paper with a maturity at the time of purchase of greater than 90 days.

In addition to our unrestricted cash and cash equivalents described above, we had restricted cash of $13.2 million at September 30, 2017 that was pledged or held as collateral in connection with workers' compensation requirements and certain other agreements. Of this amount, $0.3 million and $12.9 million were included in Prepaid expenses and other current assets and Other assets, respectively. From time to time, such restricted funds could be returned to us or we could be required to pledge additional cash.

We and certain of our subsidiaries have a credit agreement with JPMorgan Chase Bank, N.A., as administrative agent, and the other financial institutions party thereto ("Revolving Credit Facility") (seeinstitutions. See Note 312 of Notes to Interim Consolidated Financial Statements included in this ~~Report). There were~~Report for information regarding restricted cash at March 31, 2024.

We had no outstanding borrowings as of March 31, 2024 and December 31, 2023 under our Revolving Credit ~~Facility as~~Facility. See below in “Sources of ~~September 30, 2017, or as~~Liquidity” for a further discussion of ~~December 31, 2016.~~

subsequent borrowing activity. See Note 6 of Notes to Interim Consolidated Financial Statements included in this Report.

Cash Flows

The following table summarizes our cash flows from operating, investing, and financing activities ~~for each period presented~~ (in millions of dollars):

Nine Months Ended September 30,
2017 2016
Total cash provided by (used in):
Operating activities:
Fabricated Products $ 194.3
$ 158.8
All Other (62.8 ) (51.4 )
Total cash provided by operating activities $ 131.5
$ 107.4
Investing activities:
Fabricated Products $ (55.4 ) $ (57.2 )
All Other 41.1
(171.3 )
Total cash used in investing activities $ (14.3 ) $ (228.5 )
Financing activities:
Fabricated Products $ (0.2 ) $ (0.1 )
All Other (97.6 ) 122.4
Total cash (used in) provided by financing activities $ (97.8 ) $ 122.3

~~Operating Activities~~

~~Fabricated Products~~ ~~– For the nine months ended September 30, 2017, Fabricated Products segment~~


	Quarter Ended March 31,
	2024			2023
Total cash provided by (used in):
Operating activities	$	63.3		$	(20.3	)
Investing activities	$	(29.9	)	$	(25.9	)
Financing activities	$	(14.2	)	$	25.0

Cash provided by operating activities ~~provided $194.3 million~~for the quarter ended March 31, 2024 reflected results of ~~cash. Cash provided~~business activity described above in our “Consolidated Results of Operations” discussion, as well as the ~~nine months ended September 30, 2017 was primarily related to:~~following working capital changes: (i) ~~$149.9 million of operating income; (ii) depreciation and amortization of $28.9 million; (iii) goodwill impairment of $18.4 million; and (iv)~~ an increase in accounts payable of ~~$21.7~~$18.6 million ~~driven predominantly by~~primarily due to the timing of payments and higher metal ~~purchases. Cash provided by operating activities was partially offset by: (i) adjustments for other non-cash items of $11.3 million;~~cost; (ii) ~~an increase in inventory of $10.6 million; and (iii)~~ an increase in trade and other receivables of ~~$0.9 million.~~

~~Fabricated Products segment operating activities provided $158.8~~$15.1 million and contract assets of ~~cash during the nine months ended September 30, 2016. Cash provided in the nine months ended September 30, 2016 was~~$4.5 million primarily ~~related to: (i) $172.1 million~~due to timing of ~~operating income; (ii) depreciation and amortization of $26.2 million;~~customer shipments; (iii) a ~~lower~~decrease in inventory of ~~cost or market~~$4.4 million due to continued focus on inventory ~~write-down of $4.9 million;~~management; and (iv) a ~~net~~ decrease in ~~other operating assets and~~accrued liabilities of ~~$2.0~~$5.2 million.

Cash ~~provided by~~used in operating activities ~~was partially offset by:~~for the quarter ended March 31, 2023 reflected results of business activity described above in our “Consolidated Results of Operations” discussion, as well as the following working capital changes: (i) an increase in ~~accounts receivable~~trade and other receivables of ~~$26.6~~$36.9 million, primarily due ~~primarily~~ to ~~the timing of sales~~higher pricing and an increase in metal price; (ii) ~~adjustments for other non-cash items~~a decrease in accounts payable of ~~$13.4 million;~~$22.6 million primarily due to the timing of payments; and (iii) an increase in inventory of ~~$8.9 million.~~

~~For additional information regarding Fabricated Products~~$12.3 million due primarily to a higher per pound inventory cost.

See Statements of Consolidated Cash Flows included in this Report for further details on our cash flows from operating, ~~income excluding non-run-rate items, see "Results of Operations –~~ ~~Segment~~investing, and ~~Business Unit Information" above.~~

~~All Other~~ – Cash used in operating activities of $62.8 million during the nine months ended September 30, 2017 consisted primarily of payments relating to: (i) general and administrative costs of $24.2 million; (ii) an annual variable cash contribution to the VEBAs of $20.0 million with respect to the 2016 year; (iii) our short-term incentive program in the amount of $6.7 million; and (iv) interest on the 8.25% Senior Notes and Revolving Credit Facility of $11.9 million.

Cash used in operating activities of $51.4 million during the nine months ended September 30, 2016 consisted primarily of payments relating to: (i) general and administrative costs of $19.2 million; (ii) an annual variable cash contribution to the VEBAs of $19.5 million with respect to the 2015 year; (iii) our short-term incentive program in the amount of $3.6 million; and (iv) interest on the 5.875% and 8.25% Senior Notes and Revolving Credit Facility of $9.1 million.

~~Investing Activities~~

~~Fabricated Products~~ ~~– Cash used in investing~~financing activities for the ~~Fabricated Products segment during the nine months~~quarters ended September 30, 2017 was $55.4 million, compared to $57.2 million of cash used during the nine months ended September 30, 2016. Cash used during the nine months ended September 30, 2017 primarily consisted of capital expenditures of $55.9 million, partially offset by net proceeds from the disposal of property, plantMarch 31, 2024 and ~~equipment of $0.6 million. Cash used during the nine months ended September 30, 2016 was primarily related to capital expenditures.~~

~~All Other~~ – Cash provided by investing activities for All Other was $41.1 million during the nine months ended September 30, 2017 and primarily consisted of proceeds from the disposition of available for sale securities of $237.2 million, partially offset by purchases of available for sale securities of $195.9 million and capital expenditures of $0.2 million. Cash used in investing activities for All Other during the nine months ended September 30, 2016 was $171.3 million and primarily consisted of purchases of available for sale securities of $200.9 million and capital expenditures of $0.4 million, partially offset by proceeds from the disposition of available for sale securities of $30.0 million.

~~Financing Activities~~

~~Fabricated Products~~ ~~– Cash used in financing activities was insignificant during the nine months ended September 30, 2017 and September 30, 2016.~~

~~All Other~~ – Cash used in financing activities during the nine months ended September 30, 2017 was $97.6 million, representing: (i) $66.7 million of cash used to repurchase our common stock under our stock repurchase program; (ii) $26.4 million of cash dividends paid to stockholders, including the holders of restricted stock, and in dividend equivalents to the holders of certain restricted stock units and performance shares; and (iii) $4.5 million of cash used to repurchase our common stock to satisfy withholding taxes resulting from the vesting of employee restricted stock, restricted stock units and performance shares.

Cash provided by financing activities during the nine months ended September 30, 2016 was $122.4 million, representing $375.0 million in proceeds from the issuance of our 5.875% Senior Notes and $1.0 million in proceeds from the exercise of stock options, partially offset by: (i) $206.0 million for the repayment of the 8.25% Senior Notes; (ii) $24.4 million of cash dividends paid to stockholders, including the holders of restricted stock, and in dividend equivalents to the holders of certain restricted stock units and performance shares; (iii) $13.6 million of cash used to repurchase our common stock under our stock repurchase program; (iv) $6.8 million of debt issuance costs; and (v) $2.8 million of cash used to repurchase our common stock to satisfy withholding taxes resulting from the vesting of employee restricted stock, restricted stock units and performance shares.

March 31, 2023.

Sources of Liquidity

~~We believe our~~

Our most significant sources of liquidity include available cash and cash equivalents, ~~short-term investments,~~ borrowing availability under the Revolving Credit Facility, and funds generated from ~~operations are our most significant sources of liquidity. While~~operations. We believe we ~~believe these sources will be~~have sufficient ~~to finance our working capital requirements, planned capital expenditures and investments, debt service obligations and other cash requirements for at least the next twelve months, our ability~~liquidity to fund ~~such cash requirements will depend upon~~ our ~~future operating performance (which will be affected by prevailing economic conditions)~~operations and ~~financial, business~~meet our short-term and ~~other factors, some of which are beyond our control.~~long-term obligations.

~~The~~

Our Revolving Credit Facility ~~matures in December 2020~~ and ~~provides~~Senior Notes have covenants that, we believe, allow us to operate our business with limited restrictions and significant flexibility for borrowings up to $300.0 million (subject to borrowing base limitations), of which up to a maximum of $20.0 million may be utilized for letters of credit. The Revolving Credit Facility may, subject to certain conditions and the ~~agreement of lenders thereunder, be increased to $400.0 million.~~

~~The table below summarizes recent availability and usage of our Revolving Credit Facility (in millions of dollars except for borrowing rate):~~

October 16, 2017 September 30, 2017
Revolving Credit Facility borrowing commitment $ 300.0
$ 300.0
Borrowing base availability $ 290.9
$ 294.4
Less: Outstanding borrowings under Revolving Credit Facility —
—
Less: Outstanding letters of credit under Revolving Credit Facility (7.8 ) (7.8 )
Net remaining borrowing availability $ 283.1
$ 286.6
Borrowing rate (if applicable)¹
4.50 % 4.50 %

~~_______________________~~


¹	~~Such borrowing rate, if applicable, represents the interest rate for any overnight borrowings under the Revolving Credit Facility.~~

foreseeable future. We do not believe that covenants contained in the Revolving Credit Facility are reasonably likely to limit our ability to raise additional debt or equity should we choose to do so during the next 12 months, nor do we believe it is likely that during the next 12 months we will trigger the availability threshold that would require measuring and maintaining a fixed charge coverage ratio.

At April 22, 2024, we had no outstanding borrowings under the Revolving Credit Facility. See Note 39 of Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2023 for ~~information regarding~~a description of our Revolving Credit Facility.

~~Debt~~

We engage in certain customer-based supply chain financing programs to accelerate the receipt of payment for outstanding accounts receivable from certain customers. Costs of these programs are typically reimbursed to us by the customer. Receivables transferred under these customer-based supply chain financing programs generally meet the requirements to be accounted for as sales resulting in the derecognition of such receivables from our consolidated balance sheets. Receivables involved with these customer‑based supply chain finance programs for the quarter ended March 31, 2024 constituted approximately 37% of our Net sales. See ~~"Contractual Obligations, Commercial Commitments and Off-Balance Sheet Arrangements –~~ ~~Contractual Obligations and Commercial Commitments~~"Note 9 of Notes to Interim Consolidated Financial Statements included in this Report for further details with respect to these supply chain financing programs.

Material Cash Requirements

See Note 9 of Notes to Consolidated Financial Statements included in Part II, Item ~~7. "Management's Discussion~~8. “Financial Statements and ~~Analysis of Financial Condition and Results of Operations"~~Supplementary Data” in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2023 for mandatory principal and cash interest payments on the outstanding borrowings.

We do not believe that covenants in the ~~indenture~~indentures governing the ~~5.875%~~ Senior Notes are reasonably likely to limit our ability to obtain additional debt or equity financing should we choose to do so during the next 12 months.

Except as otherwise disclosed in this Report, there has been no material change in our material cash requirements from significant contractual obligations, commercial commitments, or off-balance sheet arrangements other than in the ordinary course of business since December 31, 2023.

Capital Expenditures and Investments

~~In anticipation of~~

We strive to strengthen our competitive position across our end markets through strategic capital investment. Significant investments over the past decade have positioned us well with increased capacity and expanded manufacturing capabilities while more recent capital projects have focused on further enhancing manufacturing cost efficiency, improving product quality and promoting operational security, which we believe are critical to maintaining and strengthening our position in an increasingly competitive market ~~environment, we strategically allocate~~environment. A significant portion of our capital spending ~~on projects~~over the past several years related to ~~maintain and improve~~the modernization project at our ~~competitive position. Objectives are to target significant improvement in our manufacturing cost efficiency and product quality. Capacity expansion typically is an additional benefit of most projects~~Trentwood rolling mill, which focused on ~~cost and quality.~~

~~The most significant strategic capital project in 2017 is our Trentwood efficiency and modernization initiative, a multi-year, $150.0 million capital investment initiative that~~equipment upgrades ~~equipment~~ throughout the ~~Trentwood~~ process flow to reduce conversion costs, increase efficiency, and further improve our competitive cost position on all ~~of Trentwood's products. A~~products produced at our Trentwood facility. In addition, a significant portion of ~~this~~the investment ~~will focus~~also focused on modernizing ~~our~~ legacy equipment and the process flow for thin gauge plate to achieve ~~KaiserSelect®~~KaiserSelect® quality enhancements for ~~both~~these Aero/HS Products and GE ~~products. Besides efficiency and quality~~Products. These improvements ~~upgrades completed during 2017 will also position Trentwood with additional~~have allowed us to gain incremental manufacturing capacity to ~~address anticipated~~enable future sales growth. We continue spending on our previously announced capital project to add a fourth roll coat line at our Warrick facility to increase our capacity for higher margin coated packaging product.

Our capital investment plans remain focused on supporting demand growth through capacity expansion, sustaining our operations, enhancing product quality and increasing operating efficiencies. We anticipate total capital spending in ~~2018 and beyond. The~~2024 of approximately $170.0 million to $190.0 million, the majority of which will be focused on growth initiatives, primarily reflecting investment in the new roll coat line at the Warrick facility, which we anticipate will be $100 million. In addition, approximately $10 million is attributable to our Phase VII growth project at out Trentwood ~~efficiency and modernization initiative was announced~~facility. We expect to continue to deploy capital thoughtfully so that investment decisions align with demand expectations in ~~December 2015 and as of September 30, 2017 approximately half~~order to maximize the earnings potential of the ~~$150.0 million had been spent.~~

~~Total capital expenditures were $56.1 million~~business and ~~$57.4 million for the nine months ended September 30, 2017~~maintain financial strength and ~~September 30, 2016, respectively. For the full year of 2017, we anticipate capital spending will be approximately $80.0 million.~~ flexibility.

Capital ~~investment~~investments will be funded using cash generated from operations, available cash and cash equivalents, ~~short-term investments,~~ borrowings under the Revolving Credit Facility and/or other third-party financing arrangements. The level of anticipated capital expenditures may be adjusted from time to time depending on our business plans, our price outlook for fabricated aluminum products, our ability to maintain adequate liquidity, and other factors. No assurance can be provided as to the timing of any such expenditures or the operational benefits expected therefrom.

Dividends

~~See Note 10 and Note 16 of Notes to Interim Consolidated Financial Statements included in this Report for information regarding dividends paid during the nine months ended September 30, 2017 and~~ ~~September 30, 2016, and declared subsequent to September 30, 2017.~~

We have consistently paid a quarterly cash dividend since the second quarter of 2007 to holders of our common stock, including holders of restricted ~~stock, and have increased the dividend in each year since 2011.~~stock. Nevertheless, as in the past, the future declaration and payment of dividends, if any, will be at the discretion of our Board of Directors and will depend on a number of factors, including our financial and operating results, ~~financial~~including the availability of surplus and/or net profits, liquidity position, ~~and~~ anticipated cash requirements and contractual restrictions under our ~~revolving credit facility,~~Revolving Credit Facility, the ~~indenture~~indentures for our ~~5.875%~~ Senior Notes or other indebtedness we may incur in the future. We can give no assurance that dividends will be declared and paid in the future. See Note 3 of Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 for additional information about restrictions on dividend payments contained in the Revolving Credit Facility and in the indenture for our 5.875% Senior Notes.

We also pay quarterly dividend equivalents to the holders of certain restricted stock ~~units and performance shares.~~units. Holders of performance shares ~~granted beginning in 2014~~ are not paid a quarterly dividend equivalent, but instead are entitled to receive, in connection with the issuance of underlying shares of common stock for performance shares that ultimately vest, a one-time payment equal to the dividends such ~~holder~~holders would have received if the number of such shares of common stock so issued had been held of record by such ~~holder~~holders from the date of grant of such performance shares through the date of such issuance.

~~Repurchases~~

See our Statements of ~~Common Stock~~

~~See~~Consolidated Stockholders’ Equity and Note 1014 of Notes to Interim Consolidated Financial Statements included in this Report for information regarding ~~repurchases of common stock made~~dividends paid during the ~~nine months~~quarters ended ~~September 30, 2017~~March 31, 2024 and ~~September 30, 2016~~March 31, 2023, and ~~the amounts~~declared subsequent to March 31, 2024.

Repurchases of Common Stock

We suspended share repurchases as of March 2020. We will continue to assess share repurchases as a part of our capital allocation priorities and strategic investment opportunities identified to support further growth in our business. At March 31, 2024, $93.1 million remained authorized and available for future repurchases of common stock under our stock repurchase program.

See ~~Note 7~~our Statements of ~~Notes to Interim~~ Consolidated ~~Financial Statements~~Stockholders’ Equity included in this Report for information regarding minimum statutory tax withholding obligations arising during the ~~nine months~~quarters ended ~~September 30, 2017~~March 31, 2024 and ~~September 30, 2016~~March 31, 2023 in connection with the vesting of ~~non-vested~~non‑vested shares, restricted stock units, and performance shares.

~~Restrictions Related to Equity Capital~~

We have significant federal income tax attributes, including sizable net operating loss carryforwards. Under Section 382(l)(5) ("Section 382") of the Internal Revenue Code of 1986 ("Code"), our ability to use our federal income tax attributes following a more than 50% change in ownership during any period of 36 consecutive months, all as determined under the Code (an "ownership change") would be limited annually to an amount equal to the product of: (i) the aggregate value of our outstanding common shares immediately prior to the ownership change and (ii) the applicable federal long-term tax exempt rate in effect on the date of the ownership change.

To preserve our ability to fully use our net operating loss carryforwards and other significant tax attributes: (i) our amended certificate of incorporation maintains restrictions on transfers of our stock by any person who owns, or would become an owner of, 4.99% or more of our stock as determined under Section 382 and (ii) we have adopted a tax asset protection rights plan ("Tax Asset Rights Plan") designed to deter transfers of our common stock that could result in an ownership change pursuant to Section 382.

~~Environmental Commitments and Contingencies~~

~~See Note 8 of Notes to Interim Consolidated Financial Statements included in this Report for information regarding our environmental commitments and contingencies.~~

~~Contractual Obligations, Commercial Commitments and Off-Balance Sheet Arrangements~~

During the nine months ended September 30, 2017, we granted additional stock-based awards to certain members of management and our non-employee directors under our equity incentive plans (see Note 7 of Notes to Interim Consolidated Financial Statements included in this Report). Additional awards are expected to be made in future years.

Except as otherwise disclosed herein, there has been no material change in our contractual obligations, commercial commitments or off-balance sheet arrangements other than in the ordinary course of business since December 31, 2016.

Critical Accounting Estimates and Policies

Our consolidated financial statements are prepared in accordance with GAAP. In connection with the preparation of our financial statements, we are required to make assumptions and estimates about future events and apply judgments that affect the reported amounts of assets, liabilities, revenue and expenses and the related disclosures. We base our assumptions, estimates and judgments on historical experience, current trends and other factors that management believes to be relevant at the time our consolidated financial statements are prepared. On a regular basis, management reviews the accounting policies, assumptions, estimates and judgments to ensure that our financial statements are presented fairly and in accordance with GAAP. However, because future events and their effects cannot be determined with certainty, actual results could differ from our assumptions and estimates and such differences could be material.

Our significant accounting policies are discussed in Note 1 of Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~ ~~and Note 1 of Notes to Interim Consolidated Financial Statements included in this Report.~~2023. We discuss our critical accounting estimates in Part II, Item 7. ~~"Management's~~“Management’s Discussion and Analysis of Financial Condition and Results of ~~Operations"~~Operations” of our Annual Report on Form ~~10-K~~10‑K for the year ended December 31, ~~2016~~.

~~In January 2017, we prospectively adopted Accounting Standards Update ("ASU") No. 2017-04,~~ ~~Intangibles - Goodwill and Other(Topic 350): Simplifying the Test for Goodwill Impairment~~, which eliminates the second step of the two-step goodwill impairment test that required companies to determine the fair value of individual assets and liabilities of a reporting unit to measure a goodwill impairment. Furthermore, see Note 1 and Note 4 of Notes to Interim Consolidated Financial Statements included in this Report for a discussion of the carrying values of the goodwill and intangible asset related to our Chandler, Arizona (Extrusion) and Florence, Alabama (Drawing) facilities.2023. There have been no ~~other~~ material changes in our critical accounting estimates and policies since December 31, ~~2016.~~

2023.

New Accounting Pronouncements

~~For a discussion of recently adopted and recently issued but not yet adopted~~

Information regarding new accounting pronouncements ~~see "New Accounting Pronouncements~~"is included in Note 1 of ~~Notes to Interim~~our Consolidated Financial Statements ~~included~~ in this ~~Report.~~Form 10-Q.

~~Available Information~~

~~Our website is located at~~ ~~www.kaiseraluminum.com.~~ ~~The website includes a section for investor relations under which we provide notifications~~

Availability of news or announcements regarding our financial performance, including Securities and Exchange Commission ("SEC") filings, investor events and press and earnings releases. In addition, all Kaiser Aluminum Corporation filings submitted to the SEC, including ourInformation

We file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, ~~and~~ Proxy Statements, ~~for our annual meeting of stockholders, as well as other Kaiser Aluminum Corporation~~any amendments to those reports and statements and other information with the SEC. You may obtain the documents that we file electronically from the SEC’s website at http://www.sec.gov. Our filings with the SEC are made available ~~on the SEC's web site at~~ ~~www.sec.gov~~. ~~Such filings are also available for download~~ free of charge on our ~~website. In addition,~~website at http://www.kaiseraluminum.com as soon as reasonably practicable after we ~~provide and archive on our website webcasts~~file or furnish the materials with the SEC. News releases, announcements of ~~our quarterly~~upcoming earnings calls and ~~certain~~ events in which our management participates or hosts with members of the investment community and an archive of webcasts of such earnings calls and investor events and related investor ~~presentations. The contents of the~~presentations, are also available on our website. Information on our website ~~are~~is not ~~intended to be~~ incorporated ~~by reference~~ into this ~~Report or any other report or document filed by us, and any reference to the websites are intended to be inactive textual references only.~~

Form 10-Q unless expressly noted.

Item 3.Quantitative and Qualitative Disclosures About Market Risk

The following quantitative and qualitative disclosures about market risk should be read in conjunction with Note 5 and Note 8 of Notes to Interim Consolidated Financial Statements included in this Report. Our operating results are sensitive to changes in the prices of primary aluminum, certain alloying metals, natural gas, electricity and ~~electricity,~~foreign currency, and also depend to a significant degree upon the volume and mix of ~~all~~ products ~~sold. As discussed more fully in Note 9 of Notes~~sold to ~~Interim Consolidated Financial Statements included in this Report, we~~customers. We have historically utilized hedging transactions to lock in a specified price or range of prices for certain products which we sell or consume in our production process, and to mitigate our exposure to changes in energy prices.

Aluminum

See Note 9 of Notes to Interim Consolidated Financial Statements included in this Report for a discussion of our pricing of fabricated aluminum, firm-price arrangements and third-party hedging instruments.

During the ~~nine months~~quarters ended ~~September 30, 2017~~March 31, 2024 and ~~September 30, 2016,~~March 31, 2023, settlements of derivative contracts ~~covering 136.7~~were for 39.9 million pounds and ~~163.6~~49.7 million pounds, respectively, of hedged ~~Fabricated Products~~ shipments sold on pricing terms that created ~~metal~~aluminum price risk for us. At ~~September 30, 2017,~~March 31, 2024, we had derivative contracts with respect to approximately ~~47.1 million pounds, 76.4 million pounds, 24.7~~55.3 million pounds and ~~1.0~~12.4 million pounds to hedge sales to be made in the remainder of ~~2017, 2018, 2019,~~2024 and ~~each of 2020 and 2021,~~2025, respectively, on pricing terms that create ~~metal~~aluminum price risk for us.

Based on the aluminum derivative positions held by us to hedge firm-price customer sales agreements, we estimate that a ~~$0.10 per pound~~$0.10/lb decrease in the LME market price of aluminum as of ~~September 30, 2017~~March 31, 2024 and December 31, ~~2016,~~2023, with all other variables held constant, would have resulted in an unrealized mark-to-market loss of ~~$15.0~~$6.8 million and ~~$14.8~~$6.3 million, respectively, with corresponding changes to the net fair value of our aluminum derivative positions. Additionally, we estimate that a ~~$0.01 per pound~~$0.05/lb decrease in the Midwest premium for aluminum as of March 31, 2024 and December 31, 2023, with all other variables held constant, would have resulted in an unrealized mark-to-market loss of ~~$1.5~~$1.7 million asand $1.4 million, respectively, with corresponding changes to the net fair value of ~~both September 30, 2017 and December 31, 2016.~~

our aluminum derivative positions.

Alloying Metals

We are exposed to the risk of fluctuating prices of certain alloying metals, especially copper, zinc, and ~~zinc,~~magnesium, to the extent that changes in their prices do not highly correlate with price changes for aluminum. Copper, zinc, magnesium, and certain other metals are used in our remelt operations to cast rolling ingot and extrusion billet with the proper chemistry for our products. From time to time, we enter into forward contract swaps and/or physical delivery commitments with third parties to mitigate our risk from fluctuations in the prices of ~~alloying metals, including copper and zinc.~~these alloys. As of ~~September 30, 2017,~~March 31, 2024, we had forward swap contracts with settlement dates designed to align with the timing of scheduled purchases of zinc and copper ~~("Alloy Hedges")~~ by our manufacturing facilities. Our Alloy Hedges are designated and qualify as cash flow hedges. See Note 9 of Notes to Interim Consolidated Financial Statements included in this Report for additional information relating to these Alloy Hedges. We estimate that a ~~$0.10 per pound~~$0.10/lb decrease in the ~~LME~~ market price of zinc and copper as of ~~September 30, 2017~~March 31, 2024 and December 31, ~~2016,~~2023, with all other variables held constant, would have resulted in an unrealized ~~mark-to~~ mark‑to‑market loss of ~~$0.3~~$1.0 million and ~~$0.4~~$0.8 million, ~~respectively. We estimate that a $0.10 per pound decrease in the Commodity Exchange ("COMEX") market price of copper as of September 30, 2017, with all other variables~~

~~held constant, would have resulted in an unrealized mark-to market loss of $0.2 million,~~respectively, with corresponding changes to the net fair value of our ~~Alloy Hedges.~~

zinc and copper derivative positions.

Energy

We are exposed to the risk of fluctuating prices for natural gas and electricity. We, from time to time, in the ordinary course of business, enter into hedging transactions and/or firm price physical delivery commitments ~~with firm prices~~ with third parties to mitigate our risk from fluctuations in natural gas and electricity prices.

As of September 30, 2017, we had derivative and/or physical delivery commitments with energy companies in place to cover our exposure to fluctuations in natural gas prices for approximately 72% of the expected natural gas purchases for the remainder of 2017, 71% of the expected natural gas purchases for both 2018 and 2019 and 39% of the expected natural gas purchases for 2020. We estimate that a $1.00 per mmbtu decrease in natural gas prices would have resulted in an unrealized mark-to-market loss of ~~$3.7~~$3.9 million and ~~$5.0~~$3.4 million ~~on September 30, 2017~~as of March 31, 2024 and December 31, ~~2016,~~2023, respectively, with corresponding changes to the net fair value of our natural gas derivative positions.

~~Additionally,~~ We estimate that a $5.00 per Mwh decrease in electricity prices would have resulted in an unrealized mark-to-market loss of $0.2 million, and $0.3 million as of ~~September 30, 2017, we had physical delivery commitments at firm prices covering approximately 54%~~March 31, 2024 and December 31, 2023, respectively, with corresponding changes to the net fair value of our ~~expected~~ electricity derivative positions.

Foreign Currency

As of March 31, 2024, we hedged certain lease transactions and equipment purchases ~~for~~denominated in Euros and British Pounds using forward swap contracts with settlement dates through January 2026. We estimate that a 10% decrease in the ~~remainder~~exchange rate of ~~2017, 55%~~our hedged foreign currencies to U.S. dollars would have resulted in an unrealized mark-to-market loss of ~~the expected electricity purchases~~$1.9 million for both ~~2018~~periods as of March 31, 2024 and ~~2019 and 18%~~December 31, 2023, with corresponding changes to the net fair value of ~~the expected electricity purchases for 2020.~~

our foreign currency derivative positions.

Item 4.Controls and Procedures

Evaluation of Disclosure Controls and Procedures. We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our reports under the Securities Exchange Act of 1934 is processed, recorded, summarized and reported within the time periods specified in the ~~SEC's~~SEC’s rules and forms and that such information is accumulated and communicated to management, including the principal executive officer and principal financial officer, to allow for timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. An evaluation of the effectiveness of the design and operation of our disclosure controls and procedures was performed as of the end of the period covered by this Report under the supervision of and with the participation of our management, including the principal executive officer and principal financial officer. Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of ~~September 30, 2017~~March 31, 2024 at the reasonable assurance level.

Changes in Internal Control Over Financial Reporting. We had no changes in our internal control over financial reporting during the ~~nine months~~quarter ended ~~September 30, 2017~~March 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1.Legal Proceedings

Reference is made to Part I, Item 3. ~~"Legal Proceedings"~~“Legal Proceedings” included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2023 for information concerning material legal proceedings with respect to the Company. There have been no material developments since December 31, ~~2016.~~

2023.

Item 1A.Risk Factors

Reference is made to Part I, Item 1A. ~~"Risk Factors"~~“Risk Factors” included in our Annual Report on Form 10-K for the year ended December 31, ~~2016~~2023 for information concerning risk factors. There have been no material changes in risk factors since December 31, ~~2016.~~

2023.

Item 2.Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information regarding our repurchases of our common shares during the quarter ended ~~September 30, 2017:~~

March 31, 2024:


	Equity Incentive Plan				Stock Repurchase Plan
	Total Number of Shares Purchased1		Average Price per Share		Total Number of Shares Purchased2		Average Price per Share		Maximum Dollar Value of Shares that May Yet Be Purchased Under the Programs (millions)2
January 1, 2024 - January 31, 2024		—	$	—		—	$	—	$	93.1
February 1, 2024 - February 29, 2024		—		—		—		—		93.1
March 1, 2024 - March 31, 2024		16,175		72.39		—		—		93.1
Total		16,175	$	72.39		—	$	—	n/a

Under our equity incentive plan, participants may elect to have us withhold common shares to satisfy minimum statutory tax withholding obligations arising from the recognition of income and the vesting of restricted stock, restricted stock units, and performance shares. When we withhold these shares, we are required to remit to the appropriate taxing authorities the market price of the shares withheld by us on the date of withholding. The withholding of common shares by us could be deemed a purchase of such common shares.

Amended and Restated 2016 Equity and Performance Incentive Plan Stock Repurchase Plan

Total Number of Shares Purchased¹
Average Price per Share
Total Number of Shares Purchased²
Average Price per Share
Maximum Dollar Value of Shares that May Yet Be Purchased Under the Programs (millions)²
July 1, 2017 - July 31, 2017 —
$ —
7,571
$ 91.57
$ 124.5
August 1, 2017 - August 31, 2017 —
—
5,750
96.12
$ 123.9
September 1, 2017 - September 30, 2017 —
—
5,000
99.40
$ 123.4
Total —
$ —
18,321
$ 95.13
N/A

~~__________________________~~

Under our equity incentive plans, participants may elect to have us withhold common shares to satisfy minimum statutory tax withholding obligations arising from the recognition of income and the vesting of restricted stock, restricted stock units and performance shares. When we withhold these shares, we are required to remit to the appropriate taxing authorities the market price of the shares withheld by us on the date of withholding. The withholding of common shares by us could be deemed a purchase of such common shares. All such shares withheld by us were canceled on the applicable vesting dates or dates on which income to the employees was recognized, and the number of shares withheld was determined based on the closing price per common share as reported on the Nasdaq Global Select Market on such dates.

Of the $123.4 million available for further share repurchases as of September 30, 2017, $23.4 million is part of the $100.0 million authorized in April 2015 and $100.0 million was authorized in April 2017. Repurchase transactions will occur at such times and prices as management deems appropriate and will be funded with our excess liquidity after giving consideration to internal and external growth opportunities and future cash flows. Repurchases may be in open-market transactions or in privately negotiated transactions, and the program may be modified or terminated byIn September 2018, our Board ~~of Directors at any time.~~

~~See Note 3~~ of ~~Notes~~Directors authorized us to ~~Consolidated Financial Statements included in~~repurchase an indeterminate number of shares of our ~~Annual Report on Form 10-K for~~common stock at an aggregate market value of up to $100.0 million. At March 31, 2024, $93.1 million remained available to repurchase our common shares pursuant to the ~~year ended December 31, 2016 for information about restrictions on dividend payments contained in the Revolving Credit Facility and in the indenture for our 5.875% Senior Notes.~~stock repurchase program. The September 2018 authorization does not have an expiration date.

Item 3.Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5.Other Information

Rule 10b5-1 Trading Arrangements. During the quarter ended March 31, 2024, no director or officer of the Company adopted, modified, or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" as each term is defined in Item 408 of Regulation S-K.

~~None.~~

*Item 6.Exhibits

Exhibit

Provided

Incorporated by Reference

No.

Exhibit Description

Herewith

Form

File Number

Exhibit

Filing Date

~~Exhibit~~
~~Number~~

~~Description~~

10.1

2024 Short-Term Incentive Plan for Key Managers

~~10.1~~

~~CEO Employment Agreement (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K, filed by the Company on July 17, 2017, File No. 001-09447).~~

10.2

2024-2026 Long-Term Incentive Plan Performance Shares

*31.1

10.3

2024 Form of Performance Shares Award Agreement under the Company’s 2021 Equity and Incentive Compensation Plan

31.1

Certification of ~~Jack~~Keith A. ~~Hockema~~Harvey pursuant to Section 302 of the Sarbanes-Oxley Act of ~~2002.~~2002

31.2

Certification of ~~Daniel J. Rinkenberger~~Neal E. West pursuant to Section 302 of the Sarbanes-Oxley Act of ~~2002.~~2002

32.1

Certification of ~~Jack~~Keith A. ~~Hockema~~Harvey pursuant to Section 906 of the Sarbanes-Oxley Act of ~~2002.~~2002

32.2

Certification of ~~Daniel J. Rinkenberger~~Neal E. West pursuant to Section 906 of the Sarbanes-Oxley Act of ~~2002.~~2002

101.INS

Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document

101.SCH

Inline XBRL Taxonomy Extension Schema

*101.CAL

104

Cover Page Interactive Data File (formatted as Inline XBRL ~~Taxonomy Extension Calculation~~

and contained in Exhibit 101)

* 101.DEF

~~XBRL Taxonomy Extension Definition~~

* 101.LAB

~~XBRL Taxonomy Extension Label~~

* 101.PRE

~~XBRL Taxonomy Extension Presentation~~


*	~~Filed herewith.~~

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.



	KAISER ALUMINUM CORPORATION
	~~/s/ Daniel J. Rinkenberger~~
	~~Daniel J. Rinkenberger~~
	/s/ Neal E. West
	Neal E. West
	Executive Vice President and Chief Financial Officer (Principal Financial Officer)


	/s/ ~~Neal West~~Vijai Narayan
	~~Neal West~~ Vijai Narayan
	Vice President and Chief Accounting Officer (Principal Accounting Officer)

Date: ~~October 27, 2017~~April 25, 2024


☐
~~For the quarterly period ended September 30, 2017~~

~~[ ]~~ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

~~For the transition period from _______________________________ to_________________________________________~~


Delaware		94-3030279

~~Delaware~~		~~94-3030279~~
(State of incorporation)		(I.R.S. Employer Identification No.)


1550 West McEwen Drive, Suite 500
Franklin, Tennessee		37067
~~27422 Portola Parkway, Suite 200 Foothill Ranch, California~~		~~92610-2831~~
(Address of principal executive offices)		(Zip Code)


Title of each class	Trading symbol	Name of each exchange on which registered
Common stock, par value $0.01 per share	~~(949) 614-1740~~ KALU
~~(Registrant's telephone number, including area code)~~ Nasdaq Global Select Market



Large accelerated filerþ	☒	Accelerated filero	☐

Non-accelerated filero ~~(Do not check if a smaller reporting company)~~	☐	Smaller reporting companyo	☐

		Emerging growth companyo

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o ☐


☒
~~[X]~~ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


PART I

~~PART I~~
Item 1. Financial Statements		1
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	40	21
Item 3. Quantitative and Qualitative Disclosures About Market Risk	53	29
Item 4. Controls and Procedures	54	30

PART II
Item 1. Legal Proceedings	55	31
Item 1A. Risk Factors	55	31
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	55	31
Item 3. Defaults Upon Senior Securities	55	31
Item 4. Mine Safety Disclosures	56	31
Item 5. Other Information	56	31
Item 6. Exhibits	56	32

SIGNATURES	57	33



	September 30, 2017				December 31, 2016
	(In millions of dollars, except share and per share amounts)
ASSETS
Current assets:
Cash and cash equivalents	$	73.9			$	55.2
Short-term investments	191.4				231.0
Receivables:
Trade receivables, net	138.2				137.7
Other	15.4				11.9
Inventories	212.2				201.6
Prepaid expenses and other current assets	31.5				18.5
Total current assets	662.6				655.9
Property, plant and equipment, net	557.8				530.9
Deferred tax assets, net	118.7				159.7
Intangible assets, net	25.3				26.4
Goodwill	18.8				37.2
Other assets	39.5				33.4
Total	$	1,422.7			$	1,443.5
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	94.4			$	75.8
Accrued salaries, wages and related expenses	39.0				49.1
Other accrued liabilities	43.3			��	40.1
Total current liabilities	176.7				165.0
Net liabilities of Salaried VEBA	27.8				28.6
Deferred tax liabilities	3.3				3.3
Long-term liabilities	61.9				73.2
Long-term debt	369.4				368.7
Total liabilities	639.1				638.8
Commitments and contingencies – Note 8
Stockholders' equity:
Preferred stock, 5,000,000 shares authorized at both September 30, 2017 and December 31, 2016; no shares were issued and outstanding at September 30, 2017 and December 31, 2016	—				—
Common stock, par value $0.01, 90,000,000 shares authorized at both September 30, 2017 and at December 31, 2016; 22,392,946 shares issued and 16,905,368 shares outstanding at September 30, 2017; 22,332,732 shares issued and 17,651,461 shares outstanding at December 31, 2016	0.2				0.2
Additional paid in capital	1,052.8				1,047.4
Retained earnings	109.0				75.2
Treasury stock, at cost, 5,487,578 shares at September 30, 2017 and 4,681,271 shares at December 31, 2016, respectively	(345.7		)		(281.4		)
Accumulated other comprehensive loss	(32.7		)		(36.7		)
Total stockholders' equity	783.6				804.7
Total	$	1,422.7			$	1,443.5



	Quarter Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
	(In millions of dollars, except share and per share amounts)
Net sales	$	332.8		$	320.6		$	1,044.4		$	998.7
Costs and expenses:
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items	267.2			254.7			822.7			767.1
Lower of cost or market inventory write-down	—			—			—			4.9
Unrealized gain on derivative instruments	(10.8		)	(2.0		)	(14.0		)	(16.9		)
Depreciation and amortization	10.2			9.0			29.3			26.7
Selling, general, administrative, research and development:
Selling, general, administrative, research and development	24.7			25.6			74.7			79.2
Net periodic postretirement benefit cost relating to Salaried VEBA	1.2			0.8			3.4			2.5
Loss (gain) on removal of Union VEBA net assets – Note 6	0.5			—			(0.8		)	(0.1		)
Total selling, general, administrative, research and development	26.4			26.4			77.3			81.6
Goodwill impairment	—			—			18.4			—
Other operating charges, net	—			2.7			—			2.8
Total costs and expenses	293.0			290.8			933.7			866.2
Operating income	39.8			29.8			110.7			132.5
Other (expense) income:
Interest expense	(5.3		)	(5.5		)	(16.4		)	(14.7		)
Other income (expense), net – Note 13	1.5			—			3.1			(10.4		)
Income before income taxes	36.0			24.3			97.4			107.4
Income tax provision	(16.1		)	(9.4		)	(36.8		)	(40.2		)
Net income	$	19.9		$	14.9		$	60.6		$	67.2

Net income per common share:
Basic	$	1.18		$	0.84		$	3.55		$	3.76
Diluted	$	1.16		$	0.82		$	3.49		$	3.70
Weighted-average number of common shares outstanding (in thousands):
Basic	16,834			17,841			17,072			17,858
Diluted	17,160			18,175			17,363			18,181

Dividends declared per common share	$	0.50		$	0.45		$	1.50		$	1.35


Note 1	Basis of Presentation and Recent Accounting Pronouncements	8
Note 2	Supplemental Balance Sheet Information	9
Note 3	Employee Benefits	10
Note 4	Restructuring	11
Note 5	Derivatives, Hedging Programs and Other Financial Instruments	11
Note 6	Debt and Credit Facility	15
Note 7	Commitments and Contingencies	16
Note 8	Accumulated Other Comprehensive Income	17
Note 9	Other Income, Net	18
Note 10	Income Tax Matters	18
Note 11	Net Income Per Share	18
Note 12	Supplemental Cash Flow Information	19
Note 13	Business, Product, and Geographical Area Information	19
Note 14	Subsequent Events	20



	Unrecognized Gross Compensation Costs (in millions of dollars)		Expected Period (in years) Over Which the Remaining Gross Compensation Costs Will Be Recognized
Non-vested common shares and restricted stock units	$	9.6	2.6
TSR-Based Performance Shares	$	5.6	1.7
CP-Based Performance Shares	$	6.1	2.1
EVA-Based Performance Shares	$	1.5	2.4



	Non-Vested Common Shares				Restricted Stock Units				TSR-Based Performance Shares				CP-Based Performance Shares				EVA-Based Performance Shares
	Shares		Weighted-Average Grant-Date Fair Value per Share		Units		Weighted-Average Grant-Date Fair Value per Unit		Shares		Weighted-Average Grant-Date Fair Value per Share		Shares		Weighted-Average Grant-Date Fair Value per Share		Shares		Weighted-Average Grant-Date Fair Value per Share
Outstanding at December 31, 2016	114,658		$	69.51	61,800		$	74.94	394,525		$	90.30	63,678		$	80.46	—		$	—
Granted¹	11,817		86.92		92,275		76.13		65,044		97.88		65,044		79.69		32,504		79.69
Vested	(46,689	)	71.46		(8,655	)	76.94		(94,082	)	83.18		—		—		—		—
Forfeited¹	(427	)	69.83		(6,412	)	77.70		(5,519	)	95.88		(3,342	)	79.92		(1,164	)	79.69
Canceled¹	—		—		—		—		(55,288	)	83.18		—		—		—		—
Outstanding at September 30, 2017	79,359		$	70.96	139,008		$	75.72	304,680		$	95.31	125,380		$	80.07	31,340		$	79.69



	September 30, 2017
	Level 1		Level 2		Level 3		Total
DERIVATIVE ASSETS:
Non-Designated Hedges:
Aluminum –
Fixed price purchase contracts	$	—	$	18.4	$	—	$	18.4
Midwest premium swap contracts	—		0.8		—		0.8
Natural gas – Fixed price purchase contracts	—		0.4		—		0.4

Designated Hedges:
Alloying metals – Fixed price purchase contracts	—		0.9		—		0.9
Total derivative assets¹	$	—	$	20.5	$	—	$	20.5



	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset in the Consolidated Balance Sheets		Net Amount
Counterparty (with netting agreements)	$	20.5	$	—	$	20.5	$	1.4	$	19.1
Total	$	20.5	$	—	$	20.5	$	1.4	$	19.1



	Gross Amounts of Recognized Liabilities			Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets			Gross Amounts Not Offset in the Consolidated Balance Sheets			Net Amount
Counterparty (with netting agreements)	$	(1.4	)	$	—	$	(1.4	)	$	(1.4	)	$	—
Total	$	(1.4	)	$	—	$	(1.4	)	$	(1.4	)	$	—



	September 30, 2017		December 31, 2016
Assets:
Fabricated Products	$	1,007.9	$	969.4
All Other¹	414.8		474.1
Total assets	$	1,422.7	$	1,443.5



	Parent		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Consolidating Adjustments			Consolidated
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	70.7	$	3.2	$	—		$	73.9
Short-term investments	—		191.4		—		—			191.4
Receivables:
Trade receivables, net	—		133.1		5.1		—			138.2
Intercompany loans receivable	55.6		0.1		0.6		(56.3		)	—
Other	—		14.6		0.8		—			15.4
Inventories	—		208.5		8.6		(4.9		)	212.2
Prepaid expenses and other current assets	0.1		31.0		0.4		—			31.5
Total current assets	55.7		649.4		18.7		(61.2		)	662.6
Investments in and advances to subsidiaries	1,107.0		41.9		—		(1,148.9		)	—
Property, plant and equipment, net	—		527.6		30.2		—			557.8
Long-term intercompany loans receivable	—		—		10.5		(10.5		)	—
Deferred tax assets, net	—		113.9		—		4.8			118.7
Intangible assets, net	—		25.3		—		—			25.3
Goodwill	—		18.8		—		—			18.8
Other assets	—		39.5		—		—			39.5
Total	$	1,162.7	$	1,416.4	$	59.4	$	(1,215.8	)	$	1,422.7
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	1.4	$	86.8	$	6.2	$	—		$	94.4
Intercompany loans payable	—		56.2		0.1		(56.3		)	—
Accrued salaries, wages and related expenses	—		37.2		1.8		—			39.0
Other accrued liabilities	8.3		41.0		1.1		(7.1		)	43.3
Total current liabilities	9.7		221.2		9.2		(63.4		)	176.7
Net liabilities of Salaried VEBA	—		27.8		—		—			27.8
Deferred tax liabilities	—		—		3.3		—			3.3
Long-term intercompany loans payable	—		10.5		—		(10.5		)	—
Long-term liabilities	—		59.3		2.6		—			61.9
Long-term debt	369.4		—		—		—			369.4
Total liabilities	379.1		318.8		15.1		(73.9		)	639.1

Total stockholders' equity	783.6		1,097.6		44.3		(1,141.9		)	783.6
Total	$	1,162.7	$	1,416.4	$	59.4	$	(1,215.8	)	$	1,422.7



	Quarter Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Segment operating income	$	53.7		$	42.1		$	149.9		$	172.1
Impact to segment operating income of non-run-rate items:
Adjustments to plant-level LIFO¹	(2.0		)	(4.1		)	(3.9		)	(2.2		)
Mark-to-market gain on derivative instruments	10.8			2.0			14.0			16.9
Non-cash lower of cost or market inventory write-down²	—			—			—			(4.9		)
Workers' compensation cost due to discounting	0.1			(0.1		)	(0.1		)	—
Goodwill impairment³	—			—			(18.4		)	—
Asset impairment charges³	—			(2.7		)	—			(2.8		)
Environmental expenses	(0.2		)	—			(0.2		)	—
Total non-run-rate items	8.7			(4.9		)	(8.6		)	7.0
Segment operating income excluding non-run-rate items	$	45.0		$	47.0		$	158.5		$	165.1



	September 30, 2017		December 31, 2016
Available cash and cash equivalents	$	73.9	$	55.2
Short-term investments	191.4		231.0
Net borrowing availability under Revolving Credit Facility after letters of credit	286.6		275.3
Total liquidity	$	551.9	$	561.5



	Nine Months Ended September 30,
	2017			2016
Total cash provided by (used in):
Operating activities:
Fabricated Products	$	194.3		$	158.8
All Other	(62.8		)	(51.4		)
Total cash provided by operating activities	$	131.5		$	107.4
Investing activities:
Fabricated Products	$	(55.4	)	$	(57.2	)
All Other	41.1			(171.3		)
Total cash used in investing activities	$	(14.3	)	$	(228.5	)
Financing activities:
Fabricated Products	$	(0.2	)	$	(0.1	)
All Other	(97.6		)	122.4
Total cash (used in) provided by financing activities	$	(97.8	)	$	122.3



	October 16, 2017			September 30, 2017
Revolving Credit Facility borrowing commitment	$	300.0		$	300.0
Borrowing base availability	$	290.9		$	294.4
Less: Outstanding borrowings under Revolving Credit Facility	—			—
Less: Outstanding letters of credit under Revolving Credit Facility	(7.8		)	(7.8		)
Net remaining borrowing availability	$	283.1		$	286.6
Borrowing rate (if applicable)¹	4.50		%	4.50		%



	Amended and Restated 2016 Equity and Performance Incentive Plan			Stock Repurchase Plan
	Total Number of Shares Purchased¹	Average Price per Share		Total Number of Shares Purchased²	Average Price per Share		Maximum Dollar Value of Shares that May Yet Be Purchased Under the Programs (millions)²
July 1, 2017 - July 31, 2017	—	$	—	7,571	$	91.57	$	124.5
August 1, 2017 - August 31, 2017	—	—		5,750	96.12		$	123.9
September 1, 2017 - September 30, 2017	—	—		5,000	99.40		$	123.4
Total	—	$	—	18,321	$	95.13	N/A