Related Party Transactions

9 Months Ended

Sep. 30, 2022

The significant related party transactions occurring during the nine months ended September 30, 2022 and 2021 are described below. We believe all of our transactions with related parties are at prices that approximate market.

Glencore Ownership

As of September 30, 2022, Glencore plc and its affiliates (together "Glencore") beneficially owned 42.9% of Century’s outstanding common stock (46.3% on a fully-diluted basis assuming the conversion of all of the Series A Convertible Preferred Stock) and all of our outstanding Series A Convertible Preferred Stock. See Note 7. Shareholders' Equity for a description of our outstanding Series A Convertible Preferred Stock. Century and Glencore enter into various transactions from time to time such as the purchase and sale of primary aluminum, purchase and sale of alumina and other raw materials, tolling agreements as well as forward financial contracts and borrowing and other debt transactions.

Sales to Glencore

For the three months ended September 30, 2022 and 2021, we derived approximately 63.5% and 60.3%, respectively, of our consolidated net sales from Glencore.

Glencore purchases aluminum produced at our U.S. smelters at prices based on the LME plus the Midwest regional delivery premium plus any additional market-based product premiums. Glencore purchases aluminum produced at our Grundartangi, Iceland smelter at prices primarily based on the LME plus the European Duty Paid premium plus any additional market-based product premiums.

We have entered into agreements with Glencore pursuant to which we sell certain amounts of alumina at market-based prices. For the three and nine months ended September 30, 2022, we recorded $4.9 million and $18.8 million of revenue related to alumina sales to Glencore, respectively. For the three and nine months ended September 30, 2021, we recorded $5.5 million and $16.9 million of revenue related to alumina sales to Glencore, respectively.

Purchases from Glencore

We purchase a portion of our alumina and certain other raw material requirements from Glencore. Alumina purchases from Glencore during the three months ended September 30, 2022 were priced based on published alumina and aluminum indices as well as fixed prices.

Financial Contracts with Glencore

We have certain financial contracts with Glencore. See Note 14. Derivatives regarding these forward financial sales contracts.

Summary

A summary of the aforementioned significant related party transactions is as follows:


	Three months ended September 30,				Nine months ended September 30,
	2022		2021			2022		2021
Net sales to Glencore	$	404.9	$	350.6		$	1,321.5	$	925.3
Purchases from Glencore(1)	56.0		78.3			268.5		230.1

(1) Includes settlements of financial contract positions.