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Debt | 9 Months Ended
--- | ---
Mar. 31, 2025
Debt |
Debt | 6. Debt ​ The following is a summary, as of March 31, 2025 and June 30, 2024, respectively, of the components of the Company’s outstanding long-term debt: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2025 | ​ | June 30, 2024
​ | ​ | (in thousands)
Convertible Senior Notes due 2027 | ​ | $ | 420,000 | ​ | $ | 420,000
Less: unamortized debt issuance costs | ​ | ​ | (4,087) | ​ | ​ | (5,325)
Total debt | ​ | ​ | 415,913 | ​ | ​ | 414,675
Less: current portion of debt | ​ | ​ | — | ​ | ​ | —
Long-term debt | ​ | $ | 415,913 | ​ | $ | 414,675
​ Convertible Senior Notes due 2027 In August and September 2020, the Company issued $420.0 million aggregate principal amount of Notes. The Notes are governed by an indenture (the “Indenture”) between the Company and U.S. Bank National Association, as trustee. The net proceeds from the offering of the Notes were approximately $408.6 million after deducting the underwriting fees and other expenses paid by the Company. The Notes bear interest at a rate of 1.125% per annum, payable semi-annually in arrears on March 1st and September 1st of each year, beginning on March 1, 2021. The Notes will mature on September 1, 2027. The Company recorded coupon interest expense of $1.2 million during each of the three months ended March 31, 2025 and 2024, and $3.5 million during each of the nine months ended March 31, 2025 and 2024. ​ The Company incurred debt issuance costs of $11.4 million which are amortized over the contractual term of the Notes. The Company recorded interest expense of $0.4 million related to the amortization of the debt issuance costs during each of the three months ended March 31, 2025 and 2024, and $1.2 million during each of the nine months ended March 31, 2025 and 2024. ​ Before June 1, 2027, noteholders will have the right to convert their Notes only upon the occurrence of certain events. After June 1, 2027, noteholders may convert their Notes at any time at their election until two days prior to the maturity date. The Company will settle conversions by paying cash up to the outstanding principal amount, and at the Company’s election, will settle the conversion spread by paying or delivering cash or shares of its common stock, or a combination of cash and shares of its common stock. The initial conversion rate is 18.9109 shares of common stock per $1,000 principal amount of Notes, which represents an initial conversion price of approximately $52.88 per share of common stock (lower strike price). The Notes will be redeemable at the Company’s option at any time after September 6, 2024 at a cash redemption price equal to the principal amount of the Notes, plus accrued and unpaid interest, subject to certain stock price hurdles as discussed in the Indenture. ​ In connection with the Notes, the Company entered into privately negotiated Capped Call Transactions with certain counterparties. The Capped Call Transactions are expected to cover the aggregate number of shares of the Company’s common stock that initially underlie the Notes, and are expected to reduce potential dilution to the Company’s common stock upon any conversion of Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted Notes. The upper strike price of the Capped Call Transactions is $86.174 per share. The cost of the Capped Call Transactions was $60.4 million and was recorded within additional paid-in capital.

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