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Convertible Senior Notes
3 Months Ended
Mar. 31, 2024
Convertible Senior Notes  
Convertible Senior Notes

Note 11. Convertible Senior Notes

Convertible Senior Notes payable consisted of the following at March 31, 2024 and December 31, 2023 (in thousands):

March 31, 

December 31, 

    

2024

    

2023

Principal amount of 2025 Senior Notes

$

14,344

$

14,344

Principal amount of 2026 Senior Notes

 

371,185

 

371,185

Less: unamortized debt issuance costs

(6,376)

(6,976)

Net carrying value of Convertible Senior Notes payable

$

379,153

$

378,553

Interest expense incurred in connection with the Convertible Senior Notes consisted of the following for the three months ended March 31, 2024 and 2023 (in thousands):

    

Three Months Ended

    

March 31, 

    

2024

    

2023

    

Coupon interest

$

804

$

862

Amortization of debt issuance costs

601

641

Total interest expense on Convertible Senior Notes

$

1,405

$

1,503

The Company’s 2025 Senior Notes and 2026 Senior Notes payable of $14.3 million and $371.2 million, respectively, are due and payable in 2025 and 2026, respectively.

In September 2023, the Company entered into separate, privately negotiated transactions with certain holders of the 2026 Senior Notes to repurchase $31.3 million in aggregate principal amount of the 2026 Senior Notes for a repurchase price of $25.0 million in cash. The Company recorded $5.7 million as a gain on extinguishment of debt on its condensed consolidated statement of operations for the year ended December 31, 2023, which includes the write off of $0.6 million of unamortized debt issuance costs. Following these repurchases, approximately $371.2 million principal amount of the 2026 Senior Notes remain outstanding.  

See Note 10 – Convertible Senior Notes to the Company’s consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 for additional information related to the Company’s Convertible Senior Notes.