In the quarters ended September 30, 2022 and June 30, 2022, Other expenses (income), net includes an
$11 loss and a $54 gain, respectively, for the remeasurement of monetary balances, primarily cash, related to the Company’s operations in Russia from rubles to the U.S. dollar. This loss and gain were the result of a significant weakening and
strengthening, respectively, of the ruble against the U.S. dollar in the respective periods. In the quarter ended September 30, 2022, the Company updated its five-year strategic plan, the results of which indicated that there was a decline
in the forecasted financial performance for the Extrusions segment (and asset group). As such, management evaluated the recoverability of the long-lived assets of the Extrusions asset group and, ultimately, determined that such assets were
impaired. Accordingly, in the quarter ended September 30, 2022, the Company recorded an impairment charge of $92, composed of $90 for Properties, plants, and equipment and $2 for intangible assets. In the quarter ended September 30, 2022,
Restructuring and other charges includes $15 related to the settlement of a portion of the Company’s U.S. defined benefit pension plan obligations as a result of elections by certain plan participants to receive lump-sum benefit payments. In
the year ended December 31, 2021, Restructuring and other charges includes $584 related to the settlement of a portion of the Company’s U.S. defined benefit pension plan obligations as a result of the purchase of a group annuity contract
($549-2Q21) and elections by certain plan participants to receive lump-sum benefit payments ($11-4Q21, $5-3Q21, $19-2Q21). In the year ended December 31, 2020, Restructuring and other charges includes a $198 settlement charge related to the
annuitizations of a portion of the Company’s U.S. ($140-4Q20) and U.K. ($3-3Q20, $55-2Q20) defined benefit pension plan obligations and a $25 benefit (4Q20) for contingent consideration received related to the October 2018 sale of the
Texarkana (Texas) rolling mill. In the quarter ended December 31, 2021, Arconic completed its annual review of goodwill for impairment for each of its three reporting units: Rolled Products, Building and Construction Systems, and Extrusions.
The results of this review indicated that the carrying value of the Extrusions reporting unit’s goodwill was fully impaired. Accordingly, in the quarter ended December 31, 2021, the Company recognized an impairment charge of $65. This
impairment was primarily driven by a combination of market-based factors, including delays in aerospace market improvement and significant cost inflation, resulting in increasingly limited margin expansion. The Company had not previously
identified any triggering events during 2021 prior to the annual review. Metal price lag represents the financial impact of the timing difference between when aluminum prices included in Sales are recognized and when aluminum purchase prices
included in Cost of goods sold are realized. This adjustment aims to remove the effect of the volatility in metal prices and the calculation of this impact considers applicable metal hedging transactions. Other special items include the
following: • for the quarter ended September 30, 2022, a charge related to the Grasse River environmental remediation matter ($9), costs related to the Grenfell Tower legal matter ($3), and other items ($(2)); • for the quarter ended June
30, 2022, costs related to a new labor agreement with the United Steelworkers ($19), a charge for two environmental remediation matters ($9), costs related to several legal matters, including Grenfell Tower ($3) and other ($4), and other
items ($4); • for the quarter ended March 31, 2022, costs related to several legal matters ($2), costs related to the packaging restart at the Tennessee rolling mill ($2), and other items ($1); • for the quarter ended December 31, 2021,
costs related to several legal matters, including Grenfell Tower ($4) and other ($2), costs related to both an equipment fire and packaging restart at the Tennessee rolling mill ($5), and other items ($2); • for the quarter ended September
30, 2021, a partial reversal of a previously established reserve related to the Grasse River environmental remediation matter ($11), costs related to several legal matters ($7), and other items ($3); • for the quarter ended June 30, 2021, a
write-down of inventory related to the idling of both the remaining operations at the Chandler (Arizona) extrusions facility and the casthouse operations at the Lafayette (Indiana) extrusions facility ($4) and costs related to several legal
matters ($3); • for the quarter ended March 31, 2021, costs related to several legal matters, including Grenfell Tower ($4) and other ($1); • for the quarter ended December 31, 2020, costs related to several legal matters ($5) and other
items ($3); • for the quarter ended September 30, 2020, costs related to several legal matters, including Grenfell Tower ($4) and other ($2), a write-down of inventory related to the idling of the casthouse operations at the Chandler
(Arizona) extrusions facility ($5), and other items ($2); and • for the quarter ended June 30, 2020, costs related to several legal matters, including a customer settlement ($5), Grenfell Tower ($3), and other ($3). 17 Reconciliation of
Total Company Adjusted EBITDA (cont’d)