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CONVERTIBLE NOTES
 12 Months Ended
Dec. 31, 2024
CONVERTIBLE DEBT  
CONVERTIBLE NOTES CONVERTIBLE NOTES
Convertible note obligations included in the consolidated balance sheet consisted of the following as of December 31, 2024:
Fair Value (1)
(In thousands)Principal AmountUnamortized Debt Discount and Issuance CostsNet Carrying AmountAmountLeveling
2031 Convertible Notes - 1.750%
$620,709 $(13,511)$607,198 $581,648 2
2030 Convertible Notes - 2.000%
572,993 (3,642)569,351 592,756 2
2028 Convertible Notes - 0.375%
589,380 (4,952)584,428 512,761 2
2027 Convertible Notes - 0.375%
563,822 (3,732)560,090 523,932 2
2025 Convertible Notes - 1.000% (2)
249,172 (19)249,153 246,705 2
Convertible note obligations included in the consolidated balance sheet consisted of the following as of December 31, 2023:
Fair Value (1)
(In thousands)Principal AmountUnamortized Debt Discount and Issuance CostsNet Carrying AmountAmountLeveling
2030 Convertible Notes - 2.000%
$572,993 $(4,349)$568,644 $684,475 2
2028 Convertible Notes - 0.375%
949,042 (10,499)938,543 887,354 2
2027 Convertible Notes - 0.375%
563,822 (5,429)558,393 549,839 2
2025 Convertible Notes - 1.000%
249,172 (476)248,696 293,300 2
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(1)     The fair values are based on observable market prices for this debt, which is traded in less active markets and therefore is classified as a Level 2 fair value measurement.
(2)    The Company’s convertible notes due in 2025 (the “2025 Notes”) matured on January 15, 2025 and were included in convertible notes, net, current portion on the consolidated balance sheet as of December 31, 2024. The 2025 Notes were included in convertible notes, net, less current portion as of December 31, 2023. As discussed in Note 21, the 2025 Notes were settled in cash upon maturity in January 2025.
Issuances and Settlements
In January 2018, the Company issued and sold $690.0 million in aggregate principal amount of 1.0% Convertible Notes (the “January 2025 Notes”) with a maturity date of January 15, 2025. The January 2025 Notes accrue interest at a fixed rate of 1.0% per year, payable semi-annually in arrears on January 15 and July 15 of each year, beginning on July 15, 2018. The net proceeds from the issuance of the January 2025 Notes were approximately $671.1 million, after deducting underwriting discounts and commissions and the offering expenses payable by the Company.
In June 2018, the Company issued and sold an additional $218.5 million in aggregate principal amount of 1.0% Convertible Notes (the “June 2025 Notes”). The June 2025 Notes were issued under the same indenture pursuant to which the Company previously issued the January 2025 Notes (the “Indenture”). The January 2025 Notes and the June 2025 Notes have identical terms (including the same January 15, 2025 maturity date) and are treated as a single series of securities. The net proceeds from the issuance of the June 2025 Notes were approximately $225.3 million, after deducting underwriting discounts and commissions and the offering expenses payable by the Company.
In March 2019, the Company issued and sold $747.5 million in aggregate principal amount of 0.375% Convertible Notes (the “2027 Notes”) with a maturity date of March 15, 2027. The 2027 Notes accrue interest at a fixed rate of 0.375% per year, payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2019. The net proceeds from the issuance of the 2027 Notes were approximately $729.5 million, after deducting underwriting discounts and commissions and the offering expenses payable by the Company.
The Company utilized a portion of the proceeds from the issuance of the 2027 Notes to settle a portion of the 2025 Notes in privately negotiated transactions. In March 2019, the Company used cash of $494.1 million and an aggregate of 2.2 million shares of the Company’s common stock valued at $182.4 million for total consideration of $676.5 million to settle $493.4 million of the 2025 Notes, of which $0.7 million was used to pay off interest accrued on the 2025 Notes. The transaction resulted in a loss on settlement of convertible notes of $187.7 million.
In February 2020, the Company issued and sold $1.15 billion in aggregate principal amount of 0.375% Convertible Notes (the “2028 Notes”) with a maturity date of March 1, 2028. The 2028 Notes accrue interest at a fixed rate of 0.375% per year, payable semi-annually in arrears on March 1 and September 1 of each year, beginning on September 1, 2020. The net proceeds from the issuance of the 2028 Notes were approximately $1.13 billion, after deducting underwriting discounts and commissions and the offering expenses payable by the Company.
In February 2020, the Company used $150.1 million of the proceeds from the issuance of the 2028 Notes to settle $100.0 million of the 2025 Notes, of which $0.1 million was used to pay off interest accrued on the 2025 Notes. The transaction resulted in a loss on settlement of convertible notes of $50.8 million.
In February 2023, the Company entered into a privately negotiated exchange and purchase agreement with a single holder of certain of the Company’s 2027 Notes and 2028 Notes. The Company issued the holder $500.0 million aggregate principal amount of 2.0% Convertible Notes due in 2030 (the “2030 Notes”) in exchange for $183.7 million of aggregate principal of 2027 Notes, $201.0 million of aggregate principal of 2028 Notes, and $138.0 million of cash. The extinguishment resulted in a gain on settlement of convertible notes of $17.7 million, which is included in interest expense in the consolidated statement of operations for the year ended December 31, 2023.
In March 2023, the Company entered into a privately negotiated exchange agreement with two holders of certain of the 2025 Notes. The Company issued the holder $73.0 million aggregate principal amount of 2030 Notes in exchange for $65.8 million of aggregate principal of 2025 Notes. The extinguishment resulted in a loss on settlement of convertible notes of $7.4 million, which is included in interest expense in the consolidated statement of operations for the year ended December 31, 2023.
The net proceeds from the issuance of the 2030 Notes were approximately $133.0 million, after deducting commissions and offering expenses payable by the Company. The 2030 Notes will mature on March 1, 2030 and bear interest at a rate of 2.0% per year, payable semi-annually in arrears on March 1 and September 1 of each year, beginning on September 1, 2023.
In April 2024, the Company entered into a privately negotiated exchange and purchase agreement with certain holders of the Company’s 2028 Notes. The Company issued $620.7 million aggregate principal amount of 1.75% Convertible Notes due in 2031 (the “2031 Notes”) in exchange for $359.7 million of aggregate principal of 2028 Notes, and $266.8 million of cash after deducting underwriting discounts. The extinguishment resulted in a gain on settlement of convertible notes of $10.3 million, which is included in interest expense in the condensed consolidated statement of operations for the year ended December 31, 2024.
The net proceeds from the issuance of the 2031 Notes were approximately $259.8 million, after deducting commissions and offering expenses payable by the Company.
The 2031 Notes will mature on April 15, 2031 and bear interest at a rate of 1.75% per year, payable semi-annually in arrears on October 15 and April 15 of each year, beginning on October 15, 2024. The Company has the ability to repurchase the 2031 Notes after April 17, 2029 upon the occurrence of certain events and during certain periods, as set forth in the Indenture filed at the time of the offering.
The extinguishment gains and losses recorded on the settlement of convertible notes discussed above represent the difference between (i) the fair value of the consideration transferred and (ii) the carrying value of the debt at the time of the exchange, and is included in interest expense in the consolidated statement of operations for the respective period.
Summary of Conversion Features
Until the six months immediately preceding the maturity date of the applicable series of the Company’s convertible notes (the “Notes”), each series of Notes is convertible only upon the occurrence of certain events and during certain periods, as set forth in the Indentures filed at the time of the original offerings. On or after the date that is six months immediately preceding the maturity date of the applicable series of Notes until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may elect to convert such Notes at any time, and if elected, the conversion would occur on the maturity date. The Notes will be convertible into cash, shares of the Company’s common stock (plus, if applicable, cash in lieu of any fractional share), or a combination of cash and shares of the Company’s common stock, at the Company’s election. If the Notes are not converted prior to the maturity date, the principal amount will be settled in cash upon maturity.
It is the Company’s intent to settle all conversions through combination settlement. The initial conversion rate is 13.26, 8.96, 8.21, 12.37, and 10.06 shares of common stock per $1,000 principal amount for the 2025 Notes, 2027 Notes, 2028 Notes, 2030 Notes, and 2031 Notes, respectively, which is equivalent to an initial conversion price of approximately $75.43, $111.66, $121.84, $80.83, and $99.36 per share of the Company’s common stock for the 2025 Notes, 2027 Notes, 2028 Notes, 2030 Notes, and 2031 Notes, respectively. The 2025 Notes, 2027 Notes, 2028 Notes, 2030 Notes, and 2031 Notes are potentially convertible into up to 3.3 million, 5.0 million, 4.8 million, 7.1 million, and 6.2 million shares, respectively. The conversion rate is subject to adjustment upon the occurrence of certain specified events as set forth in the Indentures filed at the time of the original offerings but will not be adjusted for accrued and unpaid interest. In addition, holders of the Notes who convert their Notes in connection with a “make-whole fundamental change” (as defined in the Indentures), will, under certain circumstances, be entitled to an increase in the conversion rate.
If the Company undergoes a “fundamental change” (as defined in the Indentures), holders of the Notes may require the Company to repurchase for cash all or part of their Notes at a repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest.
Based on the closing price of the Company’s common stock of $56.19 on December 31, 2024, the if-converted values on the Notes do not exceed the principal amount.
The Notes do not contain any financial or operating covenants or any restrictions on the payment of dividends, the issuance of other indebtedness or the issuance or repurchase of securities by the Company.
Ranking of Convertible Notes
The Notes are the Company’s senior unsecured obligations and (i) rank senior in right of payment to all of its future indebtedness that is expressly subordinated in right of payment to the Notes; (ii) rank equal in right of payment to each outstanding series thereof and to all of the Company’s future liabilities that are not so subordinated, unsecured indebtedness; (iii) are effectively junior to all of the Company’s existing and future secured indebtedness and other secured obligations, to the extent of the value of the assets securing that indebtedness and other secured obligations; and (iv) are structurally subordinated to all indebtedness and other liabilities of the Company’s subsidiaries.
Issuance Costs
Issuance costs are amortized to interest expense over the term of the Notes. The following table summarizes the original issuance costs at the time of issuance for each set of Notes:
(In thousands)
2031 Convertible Notes$6,780 
2030 Convertible Notes
4,938 
2028 Convertible Notes
24,453 
2027 Convertible Notes
14,285 
2025 Convertible Notes
17,646 
Interest Expense
Interest expense on the Notes includes the following:
Year Ended December 31,
(In thousands)202420232022
Debt issuance costs amortization$5,296 $5,350 $5,727 
Debt discount amortization933 106 147 
Gain on settlement of convertible notes(10,254)(10,324)— 
Coupon interest expense26,339 18,072 10,266 
Total interest expense on convertible notes$22,314 $13,204 $16,140 
The following table summarizes the effective interest rates of the Notes:
Year Ended December 31,
202420232022
2031 Convertible Notes2.06 %— %— %
2030 Convertible Notes2.09 %2.09 %— %
2028 Convertible Notes0.63 %0.63 %0.64 %
2027 Convertible Notes0.67 %0.67 %0.68 %
2025 Convertible Notes1.16 %1.17 %1.18 %
The remaining period over which the unamortized debt discount will be recognized as non-cash interest expense is 0.04 years, 2.20 years, 3.17 years, 5.17 years, and 6.29 years for the 2025 Notes, 2027 Notes, 2028 Notes, 2030 Notes, and 2031 Notes, respectively.