Debt

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Debt

Debt

	September 30, 2023		December 31, 2022
Debt classified as current liabilities:
Hancock County industrial revenue bonds ("IRBs") due April 1, 2028, interest payable quarterly (variable interest rates (not to exceed 12%))(1)	$	7.8	$	7.8
U.S. Revolving Credit Facility(2)	68.2		90.0
Iceland Revolving Credit Facility(3)	—		35.0
Grundartangi casthouse facility(5)	3.1		—
Iceland Term Facility(4)	4.8		13.3
Vlissingen Facility Agreement(6)	0.1		—
Debt classified as non-current liabilities:
Grundartangi casthouse facility, net of financing fees of $0.7 million at September 30, 2023(4)	86.2		49.4
Iceland Term Facility, net of financing fees of $0.0 million and current portion at September 30, 2023(5)	—		1.2
Vlissingen Facility Agreement(6)	10.0		—
7.5% senior secured notes due April 1, 2028, net of financing fees of $2.8 million at September 30, 2023, interest payable semiannually	247.2		246.6
2.75% convertible senior notes due May 1, 2028, net of financing fees of $1.6 million at September 30, 2023, interest payable semiannually	84.6		84.4
Total	$	512.0	$	527.7

(1)The IRBs are classified as current liabilities because they are remarketed weekly and could be required to be repaid upon demand if there is a failed remarketing. The interest rate at September 30, 2023 was 4.11%.

(2)We incur interest at a base rate plus applicable margin as defined within the agreement. The interest rate at September 30, 2023 was 9.25%.

(3)We incur interest at base rate plus applicable margin as defined within the agreement. The interest rate at September 30, 2023 was 8.40%.

(4)We incur interest at a base rate plus applicable margin as defined within the agreement. The interest rate at September 30, 2023 was 8.77%.

(5)We incur interest at a rate equal to 3.2% plus EUR EURIBOR 1 month as published by the European Money Market Institute as defined within the agreement. The interest rate at September 30, 2023 was 6.88%.

(6)We incur interest at a fixed rate of 8.75%.

7.5% Senior Secured Notes due 2028

In April 2021, we issued $250.0 million in aggregate principal amount of 7.5% senior secured notes due April 1, 2028 (the "2028 Notes"). We received proceeds of $245.2 million, after payment of certain financing fees and related expenses. The 2028 Notes bear interest semi-annually in arrears on April 1 and October 1 of each year, which began on October 1, 2021, at a rate of 7.5% per annum in cash. The 2028 Notes are senior secured obligations of Century, ranking equally in right of payment with all existing and future senior indebtedness of Century, but effectively senior to unsecured debt to the extent of the value of collateral.

As of September 30, 2023, the total estimated fair value of the 2028 Notes was $237.5 million. Although we use quoted market prices for identical debt instruments, the markets on which they trade are not considered to be active and are therefore considered Level 2 fair value measurements.

Convertible Notes due 2028

In April 2021, we completed a private offering of $86.3 million aggregate principal amount of convertible senior notes due May 1, 2028 unless earlier converted, repurchased, or redeemed (the "Convertible Notes"). The Convertible Notes were issued at a price of 100% of their aggregate principal amount. We received proceeds of $83.7 million, after payment of certain

financing fees and related expenses. The Convertible Notes bear interest semi-annually in arrears on May 1 and November 1 of each year, which began on November 1, 2021, at a rate of 2.75% per annum in cash.

The initial conversion rate for the Convertible Notes is 53.3547 shares of the Company's common stock per $1,000 principal amount of Convertible Notes, which is equivalent to an initial conversion price of approximately $18.74 per share of the Company's common stock. The conversion rate and conversion price are subject to customary adjustments under certain circumstances in accordance with the terms of the indenture. As of September 30, 2023, the conversion rate remains unchanged.

The Convertible Notes are the Company’s senior unsecured obligations and rank senior in right of payment to any of the Company’s indebtedness that is expressly subordinated in right of payment to the Convertible Notes; equal in right of payment to any of the Company’s unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s senior secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to all indebtedness and other liabilities (including trade payables) of the Company’s subsidiaries.

As of September 30, 2023, the if-converted value of the Convertible Notes does not exceed the outstanding principal amount.

As of September 30, 2023, the total estimated fair value of the Convertible Notes was $59.2 million. Although we use quoted market prices for identical debt instruments, the markets on which they trade are not considered to be active and are therefore considered Level 2 fair value measurements.

U.S. Revolving Credit Facility

We and certain of our direct and indirect domestic subsidiaries have a senior secured revolving credit facility with a syndicate of lenders (as amended from time to time, the "U.S. revolving credit facility"). On June 14, 2022 we amended our U.S. revolving credit facility, increasing our borrowing capacity to $250.0 million in the aggregate, including up to $150.0 million under a letter of credit sub-facility. The U.S. revolving credit facility matures on June 14, 2027.

Any letters of credit issued and outstanding under the U.S. revolving credit facility reduce our borrowing availability on a dollar-for-dollar basis. At September 30, 2023, there were $68.2 million in outstanding borrowings and $41.8 million of outstanding letters of credit issued under our U.S. revolving credit facility. Principal payments, if any, are due upon maturity of the U.S. revolving credit facility and may be prepaid without penalty.

Status of our U.S. revolving credit facility:	September 30, 2023
Credit facility maximum amount	250.0
Borrowing availability	142.6
Outstanding letters of credit issued	41.8
Outstanding borrowings	68.2
Borrowing availability, net of outstanding letters of credit and borrowings	32.6

Iceland Revolving Credit Facility

Our wholly-owned subsidiary, Nordural Grundartangi ehf ("Grundartangi"), entered into a $80.0 million revolving credit facility agreement with Landsbankinn hf., dated November 2013, as amended (the "Iceland revolving credit facility"). On September 28, 2022, we further amended the Iceland revolving credit facility and increased the facility amount to $100.0 million in the aggregate. Under the terms of the Iceland revolving credit facility, when Grundartangi borrows funds it will designate a repayment date, which may be any date prior to the maturity of the Iceland revolving credit facility. At September 30, 2023, there were no outstanding borrowings under our Iceland revolving credit facility. The Iceland revolving credit facility has a term through November 2024.

Status of our Iceland revolving credit facility:	September 30, 2023
Credit facility maximum amount	100.0
Borrowing availability	100.0
Outstanding letters of credit issued	—
Outstanding borrowings	—
Borrowing availability, net of borrowings	100.0

Grundartangi Casthouse Facility

Our wholly-owned subsidiary, Grundartangi, has entered into an eight-year Term Facility Agreement with Arion Bank hf, dated November 2021, as amended (the "Casthouse Facility") to provide for borrowings up to $130.0 million associated with construction of the new billet casthouse at Grundartangi (the"casthouse project"). Under the Casthouse Facility, repayments of principal amounts will be made in equal quarterly installments equal to 1.739% of the principal amount, the first payment occurring in July 2024, with the remaining 60% of the principal amount to be paid no later than the termination date in December 2029. As of September 30, 2023, there were $86.9 million in outstanding borrowings under the Casthouse Facility.

Iceland Term Facility

Our wholly-owned subsidiary, Grundartangi, entered into a Term Facility Agreement with Arion Bank hf, dated September 2022, (the "Iceland Term Facility") to provide for borrowings up to €13.6 million. Repayments of principal amounts are made in equal monthly installments, the first payment occurring in February 2023, with the remainder of the principal amount to be paid no later than the termination date in January 2024. Borrowings under the Iceland Term Facility bear interest at a rate equal to 3.2% plus EUR EURIBOR 1 month as published at any time by the European Money Markets Institute. As of September 30, 2023, there were €4.5 million ($4.8 million, based on the prevailing exchange rate on September 30, 2023) in outstanding borrowings under the Iceland Term Facility.

Vlissingen Facility Agreement

On December 9, 2022, Vlissingen entered into a Facility Agreement with Glencore International AG pursuant to which Vlissingen may borrow from time to time up to $90.0 million (the "Vlissingen Facility Agreement") in one or more loans at a fixed interest rate equal to 8.75% per annum and payable on December 2, 2024, the maturity date of the Vlissingen Facility Agreement. As of September 30, 2023, there were $10.0 million in outstanding borrowings under the Vlissingen Facility Agreement.

Surety Bond Facility

As part of our normal business operations, we are required to provide surety bonds or issue letters of credit in certain states in which we do business as collateral for certain workers' compensation obligations. In June 2022, we entered into a surety bond facility with an insurance company to provide such bonds when applicable. As of September 30, 2023, we had issued surety bonds totaling $6.6 million. As we had previously guaranteed our workers' compensation obligations through issuance of letters of credit against our revolving credit facility, the surety bond issuance increases credit facility availability.