4. Long-Term Debt

Senior Secured Credit Facility

On August 16, 2018, the Company entered into a $1.25 billion senior secured credit facility, or the 2018 Credit Facility, consisting of a $250.0 million term loan A, or the 2018 Term Loan A, a $750.0 million term loan B, or the 2018 Term Loan B, and a $250.0 million revolving credit facility, or the 2018 Revolving Credit Facility, with a syndicate of financial institutions as lenders.

Subsequently, the 2018 Credit Facility was amended in a series of amendments that, as of March 31, 2024, among other things, increased the borrowing capacity of the 2018 Term Loan A to a total of $286.2 million and the 2018 Revolving Credit Facility to a total of $330.0 million and establishing the Secured Overnight Financing Rate, or SOFR, for interest rate purposes under the 2018 Credit Facility. Borrowings utilizing SOFR under both the 2018 Term Loan A and 2018 Revolving Credit Facility, bore interest at, depending on the Company’s total leverage ratio, either the Adjusted Term SOFR, which is the rate per annum equal to Term SOFR plus a rate adjustment based on interest periods of one month, three months, six months and twelve months tenors equaling to approximately 0.11%, 0.26%, 0.43% and 0.72%, respectively, plus a margin of between 1.75% and 2.25%, or the base rate, which represented the highest of the Federal Funds Rate plus 0.50%, one-month Adjusted Term SOFR plus 1.00%, and the prime rate quoted by The Wall Street Journal, plus a margin of between 0.75% and 1.25%. Borrowings utilizing SOFR under the 2018 Term Loan B bore interest at either, the Adjusted Term SOFR plus a margin of 2.50%, or the base rate plus a margin of 1.50%. The Adjusted Term SOFR was subject to a floor of 0.00% and the base rate was subject to a floor of 1.00%. The Company paid commitment fees on the 2018 Revolving Credit Facility of, depending on the Company’s total leverage ratio, between 0.25% to 0.35% per annum on the undrawn portion of the 2018 Revolving Credit Facility. The maturity date of both the 2018 Term Loan A and 2018 Revolving Credit Facility was March 19, 2025. The 2018 Term Loan B maturity date was August 18, 2025.

The 2018 Credit Facility required the Company to comply with a leverage ratio. The 2018 Credit Facility also contained affirmative and negative covenants customary for financings of this type, including, among other things, limitations or prohibitions on repurchasing common shares, declaring and paying dividends and other distributions, redeeming and repurchasing certain other indebtedness, making loans and investments, incurring additional indebtedness, granting liens, and effecting mergers, asset sales and transactions with affiliates. In addition, the 2018 Credit Facility contained customary events of default.

On April 12, 2024, concurrently with the issuance of the $800.0 million aggregate principal amount of senior secured notes, or the 2029 Secured Notes, as described further below, the Company entered into the eighth amendment to the 2018 Credit Facility. The eighth amendment to the 2018 Credit Facility, among other things, refinanced and replaced in full the 2018 Credit Facility with, (i) a Term Loan B Facility, or the 2024 Term Loan B, with an aggregate principal amount of $400.0 million and (ii) a revolving credit facility, or the 2024 Revolving Credit Facility, with an aggregate principal amount of $400.0 million, collectively the 2024 Credit Facility. All obligations under the 2024 Credit Facility are unconditionally guaranteed by certain direct and indirect wholly-owned subsidiaries of Herbalife Ltd. and secured on a senior secured basis by the equity interests of certain of Herbalife Ltd.’s subsidiaries and substantially all of the assets of the domestic loan parties. Interest is due at least quarterly on amounts outstanding under the 2024 Credit Facility.

The 2024 Term Loan B Facility was issued to the lenders at a 7.00% discount, or $28.0 million, and the Company incurred approximately $10.3 million of debt issuance costs in connection with the 2024 Credit Facility. The Company may prepay the 2024 Term Loan B at a 102% premium at any time on or before the first anniversary, 101% premium following the first anniversary and on or prior to the second anniversary, and, solely in connection with a repricing event, at a 101% premium after the second anniversary but on or prior to the third anniversary, and generally at no premium thereafter. The 2024 Term Loan B requires quarterly payments equal to 5.0% of the aggregate principal amount of the 2024 Term Loan B per annum, commencing in September 2024. In addition, pursuant to the terms of the 2024 Credit Facility, beginning in fiscal year 2025, the Company may be required to make mandatory prepayments towards the 2024 Term Loan B based on an excess cash flow calculation and consolidated leverage ratio as defined under the terms of the 2024 Credit Facility.

Proceeds from the 2024 Term Loan B together with the proceeds from the 2029 Secured Notes were used to repay indebtedness, including all borrowings outstanding under the 2018 Credit Facility, effectively terminating its $228.9 million outstanding principal balance on the 2018 Term Loan A, and repaying $584.3 million on the 2018 Term Loan B, $170.0 million on the 2018 Revolving Credit Facility, and a portion of the 2025 Notes described further below. For accounting purposes, pursuant to ASC 470, Debt, these transactions were accounted for as an extinguishment of the 2018 Credit Facility. As a result, the Company recognized $981.0 million as a reduction to long-term debt representing the carrying value of the 2018 Credit Facility repaid in full in the second quarter of 2024. The Company also recognized a loss on extinguishment of approximately $2.5 million, as a result, which was recorded in other expense, net within the Company’s condensed consolidated statement of income during the second quarter of 2024.

Borrowings utilizing SOFR under the 2024 Credit Facility use Adjusted Term SOFR. The applicable interest rates on the Company’s borrowings under the 2024 Term Loan B, as amended, bear interest at either, the Adjusted Term SOFR plus a margin of 6.75%, or the base rate plus a margin of 5.75%. The 2024 Term Loan B Facility matures upon the earlier of (i) April 12, 2029, or (ii) March 16, 2028 if the outstanding principal on the 2028 Convertible Notes, as defined below, exceeds $100.0 million and the Company exceeds certain leverage ratios as of that date, or (iii) June 2, 2025 if the outstanding principal on the 2025 Notes, as defined below, exceeds $200.0 million on such date.

Effective after April 12, 2024, depending on the Company’s total leverage ratio, borrowings under the 2024 Revolving Credit Facility bear interest at either the Adjusted Term SOFR plus a margin of between 5.50% and 6.50%, or the base rate plus a margin of between 4.50% and 5.50%. The Company pays a commitment fee on the 2024 Revolving Credit Facility of, depending on the Company’s total leverage ratio, between 0.35% to 0.45% per annum on the undrawn portion of the 2024 Revolving Credit Facility. The 2024 Revolving Credit Facility matures upon the earlier of (i) April 12, 2028, (ii) December 16, 2027 if the outstanding principal on the 2028 Convertible Notes, as defined below, exceeds $100.0 million and the Company exceeds certain leverage ratios as of that date, or (iii) March 3, 2025 if the outstanding principal on the 2025 Notes, as defined below, exceeds $200.0 million on such date.

The 2024 Credit Facility contains affirmative, negative and financial covenants customary for financings of this type, including, among other things, limitations or prohibitions on declaring and paying dividends and other distributions, redeeming and repurchasing certain other indebtedness, making loans and investments, incurring additional indebtedness, granting liens, and effecting mergers, asset sales and transactions with affiliates. In addition, the 2024 Credit Facility contains customary events of default. The 2024 Revolving Credit Facility requires the Company to maintain a maximum total leverage ratio of 4.50:1.00 through December 31, 2024, stepping down to 4.25:1.00 on March 31, 2025 and 4.00:1.00 at September 30, 2025 and thereafter. The financial covenants also include a maximum first lien net leverage ratio of 2.50:1.00, a minimum fixed charge coverage ratio of 2.00:1.00, and a minimum liquidity of $200.0 million of revolver availability and accessible cash. As of September 30, 2024 and December 31, 2023, the Company was in compliance with its financial covenants under the 2024 Credit Facility and 2018 Credit Facility, respectively.

The Company is permitted to make voluntary prepayments, subject to the premiums as discussed above. These prepayments, if any, will be applied against remaining quarterly installments owed under the 2024 Term Loan B in order of maturity with the remaining principal due upon maturity, unless directed otherwise by the Company. Pursuant to the terms of the 2018 Credit Facility excess cash flow clause and based on the 2023 excess cash flow calculation and consolidated leverage ratio as of December 31, 2023, as described and defined under the terms of the 2018 Credit Facility, the Company made a $66.3 million mandatory prepayment towards the 2018 Term Loan B during the first quarter of 2024.

As of September 30, 2024 the weighted-average interest rate for borrowings under the 2024 Credit Facility was 10.05% and as of December 31, 2023 the weighted-average interest rate for borrowings under the 2018 Credit Facility was 7.62%.

During the nine months ended September 30, 2024, the Company borrowed an aggregate amount of $1,144.5 million, including $944.5 million under the 2024 Credit Facility, which included $544.5 million of borrowings under the 2024 Revolving Credit Facility, and $200.0 million under the 2018 Credit Facility, all of which was under the 2018 Revolving Credit Facility, and repaid a total amount of $1,636.2 million, including $549.5 million on amounts outstanding under the 2024 Credit Facility, which included $544.5 million of repayments on amounts outstanding under the 2024 Revolving Credit Facility, and $1,086.7 million on amounts outstanding under the 2018 Credit Facility, which included $200.0 million of repayments on amounts outstanding under the 2018 Revolving Credit Facility and a $66.3 million mandatory prepayment on amounts outstanding under the 2018 Term Loan B pursuant to the terms of the 2018 Credit Facility excess cash flow clause. During the nine months ended September 30, 2023, the Company borrowed an aggregate amount of $195.0 million under the 2018 Credit Facility, all of which was under the 2018 Revolving Credit Facility, and repaid a total amount of $276.7 million on amounts outstanding under the 2018 Credit Facility, which included $255.0 million of repayments on amounts outstanding under the 2018 Revolving Credit Facility. As of September 30, 2024 and December 31, 2023, the U.S. dollar amount outstanding under the 2024 Credit Facility was $395.0 million and 2018 Credit Facility was $886.7 million, respectively. Of the $395.0 million outstanding under the 2024 Credit Facility as of September 30, 2024, $395.0 million was outstanding under the 2024 Term Loan B. Of the $886.7 million outstanding under the 2018 Credit Facility as of December 31, 2023, $236.1 million was outstanding under the 2018 Term Loan A and $650.6 million was outstanding under the 2018 Term Loan B. There were no borrowings outstanding under the 2024 Revolving Credit Facility and 2018 Revolving Credit Facility as of September 30, 2024 and December 31, 2023, respectively. In addition, as of both September 30, 2024 and December 31, 2023, the Company had an issued but undrawn letter of credit against the 2024 Revolving Credit Facility and 2018 Revolving Credit Facility, respectively, of approximately $45 million which reduced the Company’s remaining available borrowing capacity under the 2024 Revolving Credit Facility and 2018 Revolving Credit Facility. As a result of the issued but undrawn letter of credit, as of September 30, 2024 and December 31, 2023, the remaining available borrowing capacity under the 2024 Revolving Credit Facility and 2018 Revolving Credit Facility, respectively, was approximately $355 million and approximately $285 million, respectively. There were no outstanding foreign currency borrowings under both the 2024 Credit Facility and 2018 Credit Facility as of September 30, 2024 and December 31, 2023, respectively.

During the three months ended September 30, 2024 and 2023, the Company recognized $16.5 million and $19.5 million, respectively, of interest expense relating to the 2024 Credit Facility and 2018 Credit Facility, as applicable, which included $1.2 million and less than $0.1 million, respectively, relating to non-cash interest expense relating to the debt discount and $0.5 million and $0.6 million, respectively, relating to amortization of debt issuance costs. During the nine months ended September 30, 2024 and 2023, the Company recognized $53.9 million and $54.7 million, respectively, of interest expense relating to the 2024 Credit Facility and 2018 Credit Facility, as applicable, which included $2.4 million and $0.2 million, respectively, relating to non-cash interest expense relating to the debt discount and $1.9 million and $1.6 million, respectively, relating to amortization of debt issuance costs.

The fair value of the outstanding borrowings under the 2024 Term Loan B and 2018 Term Loan B are determined by utilizing over-the-counter market quotes, which are considered Level 2 inputs as described in Note 12, Fair Value Measurements. As of September 30, 2024 and December 31, 2023, the carrying amount of the 2024 Term Loan B and 2018 Term Loan B, respectively, was $363.4 million and $648.2 million, respectively, and the fair value was approximately $375.0 million and $650.6 million, respectively. The fair value of the outstanding borrowings on the 2018 Term Loan A were determined by utilizing over-the-counter market quotes for similar instruments, which were considered Level 2 inputs as described in Note 12, Fair Value Measurements. As of December 31, 2023, the carrying value of the 2018 Term Loan A was $235.5 million, and the fair value was approximately $236.1 million.

Senior Secured Notes due 2029

In April 2024, the Company issued $800.0 million aggregate principal amount of senior secured notes, or the 2029 Secured Notes, in a private offering in the United States to persons reasonably believed to be qualified institutional buyers, pursuant to Rule 144A under the Securities Act of 1933, as amended, and outside the United States to non-US persons pursuant to Regulation S under the Securities Act of 1933, as amended. The 2029 Secured Notes are guaranteed on a senior secured basis by the Company and each of the Company's existing and future subsidiaries that is a guarantor of the obligations of any domestic borrower under the 2024 Credit Facility. The 2029 Secured Notes pay interest at a rate of 12.250% per annum payable semiannually in arrears on April 15 and October 15 of each year, beginning on October 15, 2024. The 2029 Secured Notes mature on April 15, 2029.

At any time prior to April 15, 2026, the Company may redeem all or part of the 2029 Secured Notes at a redemption price equal to 100% of their principal amount, plus a “make whole” premium as of the redemption date and accrued and unpaid interest to the redemption date. In addition, at any time prior to April 15, 2026, the Company may redeem up to 40% of the aggregate principal amount of the 2029 Secured Notes with the proceeds of one or more equity offerings, at a redemption price equal to 112.250%, plus accrued and unpaid interest. Furthermore, at any time on or after April 15, 2026, the Company may redeem all or part of the 2029 Secured Notes at the following redemption prices, expressed as percentages of principal amount, plus accrued and unpaid interest thereon to the redemption date, if redeemed during the twelve-month period beginning on April 15 of the years indicated below:

The 2029 Secured Notes contain customary negative covenants, including, among other things, limitations or prohibitions on restricted payments, incurrence of additional indebtedness, liens, mergers, asset sales and transactions with affiliates. In addition, the 2029 Secured Notes contain customary events of default.

The 2029 Secured Notes were sold at a 2.702% discount to par, or $21.6 million, and the Company incurred approximately $13.9 million of issuance cost in connection with the issuance of the 2029 Secured Notes. The total of $35.5 million which was recorded as a debt discount on the Company's condensed consolidated balance sheet, is being amortized over the contractual term of the 2029 Secured Notes using the effective-interest method.

As of September 30, 2024, the outstanding principal on the 2029 Secured Notes was $800.0 million, the unamortized debt issuance costs were $13.0 million, and the carrying amount was $766.9 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. The fair value of the 2029 Secured Notes was approximately $803.8 million as of September 30, 2024, and was determined by utilizing over-the-counter market quotes and yield curves, which are considered Level 2 inputs as defined in Note 12, Fair Value Measurements.

During the three months ended September 30, 2024, the Company recognized $25.8 million of interest expense relating to the 2029 Secured Notes, which included $0.8 million relating to non-cash interest expense relating to the debt discount and $0.5 million relating to amortization of debt issuance costs. During the nine months ended September 30, 2024, the Company recognized $48.4 million of interest expense relating to the 2029 Secured Notes, which included $1.5 million relating to non-cash interest expense relating to the debt discount and $0.9 million relating to amortization of debt issuance costs.

Convertible Senior Notes due 2024

In March 2018, the Company issued $550.0 million aggregate principal amount of convertible senior notes, or the 2024 Convertible Notes, in a private offering to qualified institutional buyers, pursuant to Rule 144A under the Securities Act of 1933, as amended. The 2024 Convertible Notes were senior unsecured obligations which ranked effectively subordinate to any of the Company’s existing and future secured indebtedness, including amounts outstanding under the 2018 Credit Facility, to the extent of the value of the assets securing such indebtedness. The 2024 Convertible Notes paid interest at a rate of 2.625% per annum payable semiannually in arrears on March 15 and September 15 of each year, beginning on September 15, 2018. Unless redeemed, repurchased or converted in accordance with their terms prior to such date, the 2024 Convertible Notes matured on March 15, 2024. On and after December 15, 2023, holders could convert their 2024 Convertible Notes at any time, regardless of the circumstances. In December 2021, the Company made an irrevocable election under the indenture governing the 2024 Convertible Notes to require the principal portion of the 2024 Convertible Notes to be settled in cash and any excess in shares or cash. Upon conversion, the 2024 Convertible Notes would have been settled in cash and, if applicable, the Company’s common shares, based on the applicable conversion rate at such time. The 2024 Convertible Notes had an initial conversion rate of 16.0056 common shares per $1,000 principal amount of the 2024 Convertible Notes, or an initial conversion price of approximately $62.48 per common share. The conversion rate was subject to adjustment upon the occurrence of certain events and was 16.0467 common shares per $1,000 principal amount of the 2024 Convertible Notes, or a conversion price of approximately $62.32 per common share, as of March 15, 2024, prior to its maturity.

In March 2018, prior to the adoption of ASU 2020-06 as described further below, the $550.0 million aggregate principal amount of the 2024 Convertible Notes were initially allocated between long-term debt, or liability component, and additional paid-in capital, or equity component, within the Company’s condensed consolidated balance sheet at $410.1 million and $139.9 million, respectively. The liability component was measured using the nonconvertible debt interest rate. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the face value of the 2024 Convertible Notes as a whole. Since the Company was required to settle these 2024 Convertible Notes at face value at or prior to maturity, this liability component was being accreted up to its face value prior to the adoption of ASU 2020-06, resulting in additional non-cash interest expense being recognized within the Company’s condensed consolidated statements of income while the 2024 Convertible Notes remained outstanding. Prior to the adoption of ASU 2020-06, the effective-interest rate on the 2024 Convertible Notes was approximately 8.4% per annum. The equity component was not to be remeasured as long as it continued to meet the conditions for equity classification.

The Company incurred approximately $12.9 million of issuance costs during the first quarter of 2018 relating to the issuance of the 2024 Convertible Notes. Of the $12.9 million issuance costs incurred, $9.6 million and $3.3 million were recorded as debt issuance costs and additional paid-in capital, respectively, in proportion to the allocation of the proceeds of the 2024 Convertible Notes prior to the adoption of ASU 2020-06. The $9.6 million of debt issuance costs, which was recorded as an additional debt discount on the Company’s condensed consolidated balance sheet, was amortized over the contractual term of the 2024 Convertible Notes using the effective-interest method.

The Company adopted ASU 2020-06 during the first quarter of 2022 using the modified retrospective method and recognized a cumulative-effect adjustment to the opening balance of accumulated deficit in the period of adoption. As a result of adopting ASU 2020-06, on January 1, 2022, the Company increased long-term debt by approximately $59.1 million, reduced paid-in capital in excess of par value by approximately $136.7 million, and decreased accumulated deficit by approximately $77.6 million within its condensed consolidated balance sheet. In addition, the effective-interest on the 2024 Convertible Notes was approximately 3.1% per annum.

In December 2022, the Company issued $277.5 million aggregate principal amount of new convertible senior notes due 2028, or the 2028 Convertible Notes as described below, and subsequently used the proceeds, to repurchase $287.5 million of its existing 2024 Convertible Notes from a limited number of holders in privately negotiated transactions for an aggregate purchase price of $274.9 million, which included $1.7 million of accrued interest. For accounting purposes, pursuant to ASC 470, Debt, these transactions were accounted for as an extinguishment of 2024 Convertible Notes and an issuance of new 2028 Convertible Notes. As a result, the Company recognized $286.0 million as a reduction to long-term debt representing the carrying value of the repurchased 2024 Convertible Notes. The $12.8 million difference between the cash paid and carrying value of the repurchased 2024 Convertible Notes was recognized as a gain on the extinguishment of debt and is recorded in other (income) expense, net within the Company’s consolidated statement of income during the fourth quarter of 2022. The accounting impact of the new 2028 Convertible Notes is described in further detail below.

In August 2023, the Company repurchased $65.5 million of its existing 2024 Convertible Notes through open market purchases for an aggregate purchase price of $65.1 million, which included $0.8 million of accrued interest. For accounting purposes, pursuant to ASC 470, Debt, these transactions were accounted for as an extinguishment of the 2024 Convertible Notes. As a result, the Company recognized $65.3 million as a reduction to current portion of long-term debt representing the carrying value of the repurchased 2024 Convertible Notes. The $1.0 million difference between the cash paid and carrying value of the repurchased 2024 Convertible Notes was recognized as a gain on the extinguishment of debt and is recorded in other income, net within the Company’s condensed consolidated statement of income during the third quarter of 2023.

On March 15, 2024, the 2024 Convertible Notes matured and the Company repaid the remaining $197.0 million outstanding principal in cash, as well as $2.6 million of accrued interest. As a result, the Company recognized $197.0 million as a reduction to current portion of long-term debt representing the carrying value of the repurchased 2024 Convertible Notes. As of December 31, 2023, the remaining outstanding principal on the 2024 Convertible Notes was $197.0 million, the unamortized debt issuance costs were $0.2 million, and the carrying amount was $196.8 million, which was recorded to current portion of long-term debt within the Company’s consolidated balance sheet. The fair value of the 2024 Convertible Notes was approximately $196.2 million as of December 31, 2023, and was determined by utilizing over-the-counter market quotes, which are considered Level 2 inputs as defined in Note 12, Fair Value Measurements.

During the three months ended September 30, 2023, the Company recognized $1.9 million of interest expense relating to the 2024 Convertible Notes, which included $0.3 million relating to amortization of debt issuance costs. During the nine months ended September 30, 2024 and 2023, the Company recognized $1.2 million and $5.7 million, respectively, of interest expense relating to the 2024 Convertible Notes, which included $0.2 million and $0.8 million, respectively, relating to amortization of debt issuance costs.

Convertible Senior Notes due 2028

In December 2022, the Company issued $250.0 million aggregate principal amount of convertible senior notes in a private offering to qualified institutional buyers, pursuant to Rule 144A under the Securities Act of 1933, as amended. The Company granted an option to the initial purchasers to purchase up to an additional $37.5 million aggregate principal amount of 2028 Convertible Notes, of which $27.5 million was exercised during December 2022, resulting in a total issuance of $277.5 million aggregate principal amount of 2028 Convertible Notes. The 2028 Convertible Notes are senior unsecured obligations which rank effectively subordinate to any of the Company’s existing and future secured indebtedness, including amounts outstanding under the 2024 Credit Facility, to the extent of the value of the assets securing such indebtedness. The 2028 Convertible Notes pay interest at a rate of 4.25% per annum payable semiannually in arrears on June 15 and December 15 of each year, beginning on June 15, 2023. Unless redeemed, repurchased or converted in accordance with their terms prior to such date, the 2028 Convertible Notes mature on June 15, 2028. Holders of the 2028 Convertible Notes may convert their notes at their option under the following circumstances: (i) during any calendar quarter commencing after the calendar quarter ending March 31, 2023, if the last reported sale price of the Company’s common shares for at least 20 trading days (whether or not consecutive) in a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter exceeds 130% of the conversion price for the 2028 Convertible Notes on each applicable trading day; (ii) during the five business-day period immediately after any five consecutive trading day period, or the measurement period, in which the trading price per $1,000 principal amount of 2028 Convertible Notes for each trading day of that measurement period was less than 98% of the product of the last reported sale price of the Company’s common shares and the conversion rate for the 2028 Convertible Notes for each such day; (iii) if the Company calls the 2028 Convertible Notes for redemption; or (iv) upon the occurrence of specified corporate events. On and after March 15, 2028, holders may convert their 2028 Convertible Notes at any time, regardless of the foregoing circumstances. Upon conversion, the principal portion of the 2028 Convertible Notes will be settled in cash and to the extent the conversion value exceeds the principal amount, the Company may elect to settle in cash, or a combination of cash and common shares, based on the applicable conversion rate at such time. The 2028 Convertible Notes had an initial conversion rate of 58.8998 common shares per $1,000 principal amount of the 2028 Convertible Notes, or an initial conversion price of approximately $16.98 per common share. The conversion rate is subject to adjustment upon the occurrence of certain events.

The Company incurred approximately $8.5 million of issuance costs during the fourth quarter of 2022 relating to the issuance of the 2028 Convertible Notes. These were recorded as a debt discount on the Company’s consolidated balance sheet and are being amortized over the contractual term of the 2028 Convertible Notes using the effective-interest method. The effective-interest rate on the 2028 Convertible Notes is approximately 4.9% per annum.

As of September 30, 2024, the outstanding principal on the 2028 Convertible Notes was $277.5 million, the unamortized debt issuance costs were $6.0 million, and the carrying amount was $271.5 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. As of December 31, 2023, the outstanding principal on the 2028 Convertible Notes was $277.5 million, the unamortized debt issuance costs were $7.0 million, and the carrying amount was $270.5 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. The fair value of the 2028 Convertible Notes was approximately $205.4 million and $320.9 million as of September 30, 2024 and December 31, 2023, respectively, and was determined by utilizing over-the-counter market quotes, which are considered Level 2 inputs as defined in Note 12, Fair Value Measurements.

During the three months ended September 30, 2024 and 2023, the Company recognized $3.3 million and $3.3 million, respectively, of interest expense relating to the 2028 Convertible Notes, which included $0.4 million and $0.3 million, respectively, relating to non-cash interest expense relating to amortization of debt issuance costs. During the nine months ended September 30, 2024 and 2023, the Company recognized $10.6 million and $9.9 million, respectively, of interest expense relating to the 2028 Convertible Notes, which included $1.1 million and $1.0 million, respectively, relating to amortization of debt issuance costs.

Senior Notes due 2025

In May 2020, the Company issued $600.0 million aggregate principal amount of senior notes, or the 2025 Notes, in a private offering in the United States to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, and outside the United States pursuant to Regulation S under the Securities Act of 1933, as amended. The 2025 Notes are senior unsecured obligations which rank effectively subordinate to any of the Company’s existing and future secured indebtedness, including amounts outstanding under the 2024 Credit Facility, to the extent of the value of the assets securing such indebtedness. The 2025 Notes pay interest at a rate of 7.875% per annum payable semiannually in arrears on March 1 and September 1 of each year, beginning on March 1, 2021. The 2025 Notes mature on September 1, 2025.

The Company may redeem all or part of the 2025 Notes at 100.0% of principal amount, plus accrued and unpaid interest thereon to the redemption date.

The 2025 Notes contain customary negative covenants, including, among other things, limitations or prohibitions on restricted payments, incurrence of additional indebtedness, liens, mergers, asset sales and transactions with affiliates. In addition, the 2025 Notes contain customary events of default.

The Company incurred approximately $7.9 million of issuance costs during the second quarter of 2020 relating to the issuance of the 2025 Notes. The $7.9 million of debt issuance costs, which was recorded as a debt discount on the Company’s condensed consolidated balance sheet, are being amortized over the contractual term of the 2025 Notes using the effective-interest method.

In April 2024, the Company redeemed $300.0 million of the 2025 Notes for an aggregate purchase price of $309.1 million, which included $3.2 million of accrued interest. For accounting purposes, pursuant to ASC 470, Debt, this transaction was accounted for as an extinguishment of the portion of the 2025 Notes redeemed. As a result, the Company recognized $298.8 million as a reduction to long-term debt representing the carrying value of the redeemed 2025 Notes. The $7.1 million difference between the cash paid and carrying value of the redeemed 2025 Notes was recognized as a loss on the extinguishment of debt and was recorded in other expense, net within the Company’s condensed consolidated statement of income during the second quarter of 2024. Separately, in April 2024, the Company also repurchased $37.7 million of the 2025 Notes in a private transaction for an aggregate purchase price of $38.9 million, which included $0.5 million of accrued interest and, for accounting purposes, pursuant to ASC 470, Debt, this repurchase transaction was accounted for as an extinguishment of the portion of the 2025 Notes repurchased. As a result, the Company recognized $37.5 million as a reduction to long-term debt representing the carrying value of the repurchased 2025 Notes. The $0.9 million difference between the cash paid and carrying value of the repurchased 2025 Notes was recognized as a loss on the extinguishment of debt and was recorded in other expense, net within the Company’s condensed consolidated statement of income during the second quarter of 2024.

As of September 30, 2024, the outstanding principal on the 2025 Notes was $262.3 million, the unamortized debt issuance costs were $0.7 million, and the carrying amount was $261.6 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. As of December 31, 2023, the outstanding principal on the 2025 Notes was $600.0 million, the unamortized debt issuance costs were $2.9 million, and the carrying amount was $597.1 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. The fair value of the 2025 Notes was approximately $261.7 million and $596.8 million as of September 30, 2024 and December 31, 2023, respectively, and was determined by utilizing over-the-counter market quotes and yield curves, which are considered Level 2 inputs as defined in Note 12, Fair Value Measurements.

During the three months ended September 30, 2024 and 2023, the Company recognized $5.3 million and $12.2 million, respectively, of interest expense relating to the 2025 Notes, which included $0.2 million and $0.3 million, respectively, relating to amortization of debt issuance costs. During the nine months ended September 30, 2024 and 2023, the Company recognized $24.3 million and $36.6 million, respectively, of interest expense relating to the 2025 Notes, which included $0.8 million and $1.1 million, respectively, relating to amortization of debt issuance costs.

Senior Notes due 2029

In May 2021, the Company issued $600.0 million aggregate principal amount of senior notes, or the 2029 Notes, in a private offering in the United States to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, and outside the United States pursuant to Regulation S under the Securities Act of 1933, as amended. The 2029 Notes are senior unsecured obligations which rank effectively subordinate to any of the Company’s existing and future secured indebtedness, including amounts outstanding under the 2024 Credit Facility, to the extent of the value of the assets securing such indebtedness. The 2029 Notes pay interest at a rate of 4.875% per annum payable semiannually in arrears on June 1 and December 1 of each year, beginning on December 1, 2021. The 2029 Notes mature on June 1, 2029.

The 2029 Notes contain customary negative covenants, including, among other things, limitations or prohibitions on restricted payments, incurrence of additional indebtedness, liens, mergers, asset sales and transactions with affiliates. In addition, the 2029 Notes contain customary events of default.

The Company incurred approximately $7.7 million of issuance costs during the second quarter of 2021 relating to the issuance of the 2029 Notes. The $7.7 million of debt issuance costs, which was recorded as a debt discount on the Company’s condensed consolidated balance sheet, are being amortized over the contractual term of the 2029 Notes using the effective-interest method.

As of September 30, 2024, the outstanding principal on the 2029 Notes was $600.0 million, the unamortized debt issuance costs were $4.9 million, and the carrying amount was $595.1 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. As of December 31, 2023, the outstanding principal on the 2029 Notes was $600.0 million, the unamortized debt issuance costs were $5.5 million, and the carrying amount was $594.5 million, which was recorded to long-term debt within the Company’s condensed consolidated balance sheet. The fair value of the 2029 Notes was approximately $386.4 million and $471.6 million as of September 30, 2024 and December 31, 2023, respectively, and was determined by utilizing over-the-counter market quotes and yield curves, which are considered Level 2 inputs as defined in Note 12, Fair Value Measurements.

During the three months ended September 30, 2024 and 2023, the Company recognized $7.5 million and $7.5 million, respectively, of interest expense relating to the 2029 Notes, which included $0.2 million and $0.2 million, respectively, relating to amortization of debt issuance costs. During the nine months ended September 30, 2024 and 2023, the Company recognized $22.6 million and $22.6 million, respectively, of interest expense relating to the 2029 Notes, which included $0.7 million and $0.6 million, respectively, relating to amortization of debt issuance costs.

Total Debt

The Company’s total interest expense was $59.4 million and $41.7 million for the three months ended September 30, 2024 and 2023, respectively, and $161.4 million and $124.6 million for the nine months ended September 30, 2024 and 2023, respectively, which was recognized within its condensed consolidated statements of income.

Certain vendors and government agencies may require letters of credit or similar guaranteeing arrangements to be issued or executed. As of September 30, 2024, the Company had $143.1 million of issued but undrawn letters of credit or similar arrangements, which includes approximately $45 million of an undrawn letter of credit against the 2024 Revolving Credit Facility, as discussed above, and $65 million of surety bonds, both related to the Company's tax assessments in Brazil as described further in Note 5, Contingencies.