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Fair Value Measurements

6 Months Ended

Jun. 30, 2021

We measure certain of our assets and liabilities at fair value. Fair value represents the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

In general, reporting entities should apply valuation techniques to measure fair value that maximize the use of observable inputs and minimize the use of unobservable inputs. Observable inputs are developed using market data and reflect assumptions that market participants would use when pricing the asset or liability. Unobservable inputs are developed using the best information available about the assumptions that market participants would use when pricing the asset or liability.

The fair value hierarchy provides transparency regarding the inputs we use to measure fair value. We categorize each fair value measurement in its entirety into the following three levels, based on the lowest level input that is significant to the entire measurement:

•Level 1 Inputs - quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.

•Level 2 Inputs - inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

•Level 3 Inputs - significant unobservable inputs for the asset or liability.


Recurring Fair Value Measurements	As of June 30, 2021
	Level 1		Level 2		Level 3		Total
ASSETS:
Cash equivalents	$	0.1	$	—	$	—	$	0.1
Trust assets (1)	1.0		—		—		1.0

Derivative instruments	—		27.6		1.5		29.1
TOTAL	$	1.1	$	27.6	$	1.5	$	30.2

LIABILITIES:
Contingent obligation – net	$	—	$	—	$	—	$	—
Derivative instruments	—		138.7		18.3		157.0
TOTAL	$	—	$	138.7	$	18.3	$	157.0


Recurring Fair Value Measurements	As of December 31, 2020
	Level 1		Level 2		Level 3		Total
ASSETS:
Cash equivalents	$	54.2	$	—	$	—	$	54.2
Trust assets (1)	0.0		—		—		0.0
Derivative instruments	—		12.1		3.0		15.1
TOTAL	$	54.2	$	12.1	$	3.0	$	69.3

LIABILITIES:
Contingent obligation – net	$	—	$	—	$	—	$	—
Derivative instruments	—		16.7		0.0		16.7
TOTAL	$	—	$	16.7	0.0		$	16.7

(1) Trust assets are currently invested in money market funds. These trust assets are held to fund the non-qualified supplemental executive pension benefit obligations for certain of our officers.

The following section describes the valuation techniques and inputs for fair value measurements categorized within Level 2 or Level 3 of the fair value hierarchy:

Level 2 Fair Value Measurements:

Asset / Liability

Valuation Techniques

Inputs

LME forward financial sales contracts

Discounted cash flows

Quoted LME forward market

Midwest Premium ("MWP") forward financial sales contracts

Discounted cash flows

Quoted MWP forward market

Fixed for floating swaps

Discounted cash flows

Quoted LME forward market, quoted MWP forward market

Nord Pool power price swaps

Discounted cash flows

Quoted Nord Pool forward market

Indiana Hub power price swaps

Discounted cash flows

Quoted Indiana Hub forward market

FX swaps

Discounted cash flows

Euro/USD forward exchange rate

Contingent obligation

Discounted cash flows

Quoted LME forward market

When valuing Level 3 assets and liabilities, we use certain significant unobservable inputs. Management incorporates various inputs and assumptions including forward commodity prices, commodity price volatility, and macroeconomic conditions, including interest rates and discount rates. Our estimates of significant unobservable inputs are ultimately based on our estimates of risks that market participants would consider when valuing our assets and liabilities. The following table presents the inputs for fair value measurements categorized within Level 3 of the fair value hierarchy, along with information regarding significant unobservable inputs used to value Level 3 assets and liabilities:


Level 3 Fair Value Measurements:				As of June 30, 2021			As of December 31, 2020
Asset / Liability	Valuation Technique	Observable Inputs	Significant Unobservable Input	Fair Value		Value/Range of Unobservable Input	Fair Value		Value/Range of Unobservable Input
LME forward financial sales contracts	Discounted cash flows	Quoted LME forward market	Discount rate net (1)	$	(17.9)	8.58%	$	2.9	10.00%
FX swaps	Discounted cash flows	Euro/USD forward exchange rate	Discount rate net (1)	$	(0.4)	8.58%	$	0.1	10.00%
Nord Pool power price swaps	Discounted cash flows	Quoted Nord Pool forward market	Discount rate net (1)	$	1.5	8.58%	—		—

(1) Represents risk adjusted discount rate.

The following table presents the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis.


	Level 3 Assets		Level 3 Liabilities
For the three months ended June 30, 2021	Nord Pool		LME forward financial sales contracts		FX Swaps
Balance as of April 1, 2021	$	—	$	(6.0)	$	(0.2)
Total realized/unrealized gains (losses)
Included in net income (loss) (1)	—		(11.6)		0.0
Purchases, sales, settlements
Purchases	—		—		—
Sales	—		—		—
Settlements	—		—		—
Transfers into Level 3 (2)	1.5		(0.3)		(0.2)
Transfers out of Level 3(3)	—		—		—
Balance as of June 30, 2021	1.5		(17.9)		$	(0.4)

Change in unrealized gains (losses) (1)	0.0		$	(11.6)	0.0

(1) Gains and losses are presented in the Consolidated Statement of Operations within the line item "Net gain (loss) on forward and derivative contracts."

(2) Transfers into Level 3 due to contracts with applied discount rate during the second quarter of 2021.

(3) Transfers out of Level 3 due to period of time remaining in derivative contract.


For the three months ended June 30, 2020	Level 3 Assets		Level 3 Liabilities
	LME forward financial sales contracts		Hawesville L4 Power Price Swaps
Balance as of April 1, 2020	$	7.8	$	(3.2)
Total realized/unrealized gains (losses)
Included in net income (1)	(1.7)		0.0
Purchases, sales, settlements
Purchases	—		—
Sales	—		—
Settlements	—		1.7
Transfers into Level 3 (2)	—		—
Transfers out of Level 3 (3)	—		—
Balance as of June 30, 2020	$	6.1	$	(1.5)

Change in unrealized gains (losses)	$	(1.7)	$	1.7

(1) Gains and losses are presented in the Consolidated Statement of Operations within the line item "Net gain (loss) on forward and derivative contracts."

(2) Transfers into Level 3 due to contracts with applied discount rate during the second quarter of 2020.

(3) Transfers out of Level 3 due to period of time remaining in derivative contract.


	Level 3 Assets		Level 3 Liabilities
For the six months ended June 30, 2021	Nord Pool		LME forward financial sales contracts		FX Swaps
Balance as of January 1, 2021	$	—	$	2.9	$	0.1
Total realized/unrealized gains (losses)
Included in net income (loss) (1)	—		(20.3)		0.0
Purchases, sales, settlements
Purchases	—		—		—
Sales	—		—		—
Settlements	—		—		—
Transfers into Level 3 (2)	1.5		(1.0)		(0.4)
Transfers out of Level 3(3)	—		0.5		(0.1)
Balance as of June 30, 2021	1.5		(17.9)		$	(0.4)

Change in unrealized gains (losses) (1)	0.0		$	(20.3)	0.0

(1) Gains and losses are presented in the Consolidated Statement of Operations within the line item "Net gain (loss) on forward and derivative contracts."

(2) Transfers into Level 3 due to contracts with applied discount rate during the six months ended June 30, 2021.

(3) Transfers out of Level 3 due to period of time remaining in derivative contract.


For the six months ended June 30, 2020	Level 3 Assets		Level 3 Liabilities
	LME forward financial sales contracts		Hawesville L4 Power Price Swaps
Balance as of January 1, 2020	$	10.6	$	(2.9)
Total realized/unrealized gains (losses)
Included in Net Income (1)	5.0		(1.4)
Purchases, sales, settlements
Purchases	—		—
Sales	—		—
Settlements	—		2.8
Transfers into Level 3(2)	—		—
Transfers out of Level 3(3)	(9.5)		—
Balance as of June 30, 2020	$	6.1	$	(1.5)

Change in unrealized gains (losses) (1)	$	5.0	$	1.4

(1) Gains and losses are presented in the Consolidated Statement of Operations within the line item "Net gain (loss) on forward and derivative contracts."

(2) Transfers into Level 3 due to contracts with applied discount rate during the six months ended June 30, 2020.

(3) Transfers out of Level 3 due to period of time remaining in derivative contract.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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