Note 2. Financial Instruments and Fair Value Measurements
We classify our financial instruments, except for our investment in an auction rate security and other investments in privately held companies, within Level 1 or Level 2 in the fair value hierarchy because we use quoted prices in active markets or alternative pricing sources and models using market observable inputs to determine their fair value.
Financial Instruments Measured at Fair Value on a Recurring Basis
Cash and cash equivalents, certificates of deposit, investment in an auction rate security, and marketable securities, included in prepaid expenses and other current assets and other assets in the consolidated balance sheets, are carried at fair value.
The following table sets forth our financial instruments as of June 30, 2025 and 2024, which are measured at fair value on a recurring basis by level within the fair value hierarchy. These are classified based on the lowest level of input that is significant to the fair value measurement (in thousands):
| | | | | | | | | | | | | | | | | | | | | | | |
| June 30, 2025 | Level 1 | | Level 2 | | Level 3 | | Asset at Fair Value |
| Assets | | | | | | | |
Money market funds(1) | $ | 44 | | | $ | — | | | $ | — | | | $ | 44 | |
| Certificates of deposit | — | | | 519 | | | — | | | 519 | |
| Investment in marketable equity security | 6,239 | | | — | | | — | | | 6,239 |
| Auction rate security | — | | | — | | | 1,750 | | | 1,750 | |
| Total assets measured at fair value | $ | 6,283 | | | $ | 519 | | | $ | 1,750 | | | $ | 8,552 | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
| June 30, 2024 | Level 1 | | Level 2 | | Level 3 | | Asset at Fair Value |
| Assets | | | | | | | |
Money market funds(1) | $ | 340 | | | $ | — | | | $ | — | | | $ | 340 | |
| Certificates of deposit | — | | | 486 | | | — | | | 486 | |
| Investment in marketable equity security | 3,686 | | | — | | | — | | | 3,686 | |
| Auction rate security | — | | | — | | | 1,829 | | | 1,829 | |
| Total assets measured at fair value | $ | 4,026 | | | $ | 486 | | | $ | 1,829 | | | $ | 6,341 | |
| | | | | | | |
| | | | | | | |
| | | | | | | |
(1) All of the money market funds are included in cash and cash equivalents as of June 30, 2025. As of June 30, 2024, $0.1 million and $0.2 million of money market funds are included in cash and cash equivalents and restricted cash, non-current in other assets, respectively, in the consolidated balance sheets.
The investment in marketable equity security is carried at fair value using values available on a public exchange, is based on a Level 1 input, and is recorded in prepaid expenses and other current assets in the consolidated balance sheets. The unrealized gains and losses of the investment are included in other income, net in our consolidated statements of operations. As of June 30, 2025, we have investment of $6.2 million in a marketable equity security. An unrealized gain (loss) of $2.6 million and $(1.3) million was recorded in other income, net in the consolidated statements of operations for the fiscal years ended June 30, 2025 and 2024.
Our investment in an auction rate security is classified as an available for sale security within Level 3 of the fair value hierarchy as the determination of our fair value was not based on observable inputs as of June 30, 2025 and June 30, 2024. See Note 1, “Organization and Summary of Significant Accounting Policies” in the notes to the consolidated financial statements for a discussion of our policies regarding the fair value hierarchy. We are using the discounted cash flow method to estimate the fair value of the auction rate security at each period end and using the following assumptions: (i) the expected yield based on observable market rate of similar securities, (ii) the security coupon rate that is reset monthly, (iii) the estimated holding period, and (iv) a liquidity discount. The liquidity discount assumption is based on the management estimate of lack of marketability discount of similar securities and is determined based on the analysis of financial market trends over time, recent redemptions of securities and other market activities. We performed a sensitivity analysis and applying a change of either plus or minus 100 basis points in the liquidity discount would not result in a significantly higher or lower fair value measurement of the auction rate security as of June 30, 2025.
For the fiscal years ended June 30, 2025, 2024, and 2023, the unrealized gains and losses for the auction rate security in other comprehensive income were not material.
On a quarterly basis, we also evaluate the current expected credit loss by considering factors such as historical experience, market data, issuer-specific factors, current economic conditions, and reasonable economic forecasts that affect collectability. For the fiscal years ended June 30, 2025, 2024, and 2023, the credit losses related to our investments were not material.
There were no transfers between Level 1, Level 2 or Level 3 financial instruments in fiscal years 2025 and 2024.
Financial Instruments Not Recorded at Fair Value
Accounts receivable, accounts payable, and accrued liabilities are carried at cost, which approximates fair value due to the short maturity of these instruments.
We estimate the fair value of outstanding debt, including our 2029 Convertible Notes, 2028 Convertible Notes, and 2030 Convertible Notes, for disclosure purposes on a recurring basis. Non-current accounts receivable, included in other assets in the consolidated balance sheets, are carried at amortized cost, and bear interest at rates that approximate current market rates for similar credit. We believe the carrying amounts approximate fair value because there have been no significant changes in market rates or credit risk.
As of June 30, 2025 and 2024, our total lines of credit and term loans of $112.5 million and $476.4 million, respectively, are reported at amortized cost. The outstanding debt was categorized as Level 2 as it is not actively traded. The carrying value approximates fair value.
The estimated fair value as of June 30, 2025 of the 2029 Convertible Notes, the 2028 Convertible Notes, and the 2030 Convertible Notes were $1,801.9 million, $818.5 million, and $2,576.6 million, respectively. The estimated fair value as of June 30, 2024 of the 2029 Convertible Notes was $1,734.6 million. The estimated fair value of the 2029 Convertible Notes, the 2028 Convertible Notes, and the 2030 Convertible Notes was determined through consideration of quoted market prices. The 2029 Convertible Notes, 2028 Convertible Notes, and 2030 Convertible Notes are categorized as Level 2 since their fair value was based on Level 2 inputs of quoted prices.