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Summary of Significant Accounting Policies (Policies)

9 Months Ended

Mar. 31, 2025

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those related to the valuation of share-based awards, the discount rate used in estimating the present value of the right-of-use assets and lease liabilities, the useful lives of property and equipment, the recoverability of long-lived assets, clinical trial accruals, periods over which revenue should be recognized, relative stand-alone selling price, deferred income taxes and related valuation allowances, and the assessment of our ability to fund our operations for at least the next 12 months from the date of issuance of these condensed consolidated financial statements. We base our estimates on historical experience and other market-specific or other relevant assumptions that we believe to be reasonable under the circumstances. Estimates are assessed each reporting period and updated to reflect current information. As future events and their effects cannot be determined with precision, actual results may materially differ from those estimates or assumptions.

Short-term Investments

Short-term investments are marketable securities with original maturities greater than three months but less than one year from date of purchase. As of March 31, 2025, we had no short-term investments. As of June 30, 2024, our short-term investments consisted of $34.6 million in United States government securities. The short-term investments held as of June 30, 2024 were considered to be held to maturity and are carried at amortized cost. As of March 31, 2025, we had no unrealized gains and losses. As of June 30, 2024, gross unrealized gains and losses were immaterial.

Revenue Recognition

Revenues from Customers

In accordance with ASC Topic 606, Revenue from Contracts with Customers (Topic 606), we recognized revenue when control of the promised goods or services was transferred to our customers, in an amount that reflects the consideration we expected to be entitled to in exchange for those goods or services. For enforceable contracts with our customers, we first identified the distinct performance obligations – or accounting units – within the contract. Performance obligations are commitments in a contract to transfer a distinct good or service to the customer.

Payments received under commercial arrangements, such as licensing technology rights, may include non-refundable fees at the inception of the arrangements, milestone payments for specific achievements designated in the agreements, and royalties on the sale of products. At the inception of arrangements that include milestone payments, we used judgment to evaluate whether the milestones were probable of being achieved, and we estimated the amount, if any, to include in the transaction price using the most likely method. If it were probable that a significant revenue reversal would not occur, the estimated amount was included in the transaction price. Milestone payments that were not within our or the licensee’s control, such as regulatory approvals, were not included in the transaction price until those approvals were received. At the end of each reporting period, we re-evaluated the probability of achievement of development milestones and any related constraint and, as necessary, we adjusted our estimate of the overall transaction price.

To the extent a contract included multiple promised deliverables, we applied judgment to determine whether promised deliverables were capable of being distinct and were distinct within the context of the contract. If these criteria were not met, the promised deliverables were accounted for as a combined performance obligation. For arrangements with multiple distinct performance

obligations, we allocated variable consideration related to our 50-50 cost share for development services directly to the associated performance obligation and then allocated the remaining consideration among the performance obligations based on their relative stand-alone selling price.

When not directly observable, we typically estimated the stand-alone selling price for each distinct performance obligation. Variable consideration that related specifically to our efforts to satisfy specific performance obligations was allocated entirely to those performance obligations. Other components of the transaction price were allocated based on the relative stand-alone selling price, over which management has applied significant judgment. We developed assumptions that required judgment to determine the stand-alone selling price for license-related performance obligations, which may have included forecasted revenues, development timelines, reimbursement rates for personnel costs, discount rates and probabilities of technical, regulatory and commercial success. We estimated stand-alone selling price for research and development performance obligations by forecasting the expected costs of satisfying a performance obligation plus an appropriate margin.

In the case of a license that is a distinct performance obligation, we recognized revenue allocated to the license from non-refundable, up-front fees at the point in time when the license was transferred to the licensee and the licensee can use and benefit from the license. For licenses that are bundled with other distinct or combined obligations, we used judgment to assess the nature of the performance obligation to determine whether the performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue. If the performance obligation is satisfied over time, we evaluated the measure of progress in each reporting period and, if necessary, adjusted the measure of performance and related revenue recognition.

The selection of the method to measure progress towards completion requires judgment and is based on the nature of the products or services to be provided. Revenue is recorded proportionally as costs are incurred. We generally used the cost-to-cost measure of progress because it best depicted the transfer of control to the customer which occurred as we incurred costs. Under the cost-to-cost measure of progress, the extent of progress towards completion was measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation (an input method under Topic 606). We used judgment to estimate the total cost expected to complete the research and development performance obligations, which included subcontractors’ costs, labor, materials, other direct costs and an allocation of indirect costs. We evaluated these cost estimates and the progress during each reporting period and, as necessary, we adjusted the measure of progress and related revenue recognition.

In connection with our now terminated April 2020 License, Development and Commercialization Agreement with Kyowa Kirin Co., Ltd. (KKC) (the KKC Commercialization Agreement) described in Note 7. License Agreements, we performed development services related to our 50-50 cost sharing arrangement for which revenue was recognized over time. Additionally, we performed services for KKC at their request, the costs of which were fully reimbursed to us. We recorded the reimbursement for such pass through services as revenue at 100% of reimbursed costs, as control of the additional services for KKC was transferred at the time we incurred such costs. The costs of these services were recognized in the condensed consolidated statements of operations as research and development expense.

During the three and nine months ended March 31, 2025 and the three months ended March 31, 2024, we did not recognize any revenue associated with the KKC Commercialization Agreement. During the nine months ended March 31, 2024, we recognized revenue associated with the KKC Commercialization Agreement as follows (in thousands):


Timing of Revenue Recognition:
Services performed over time	$	743
Pass through services at a point in time		9
	$	752

Contract Balances

Contract liabilities were included in deferred revenue and deferred revenue, long-term in our condensed consolidated balance sheets. Our contract liabilities accounted for under Topic 606 related to the amount of initial upfront consideration allocated to the development services performance obligations.

As of March 31, 2025 and June 30, 2024, we had no accounts receivable, unbilled receivable balances or contract liabilities. A reconciliation of the beginning and ending amount of contract liabilities as of June 30, 2024, which was primarily related to the

combined performance obligation for the transfer of development services under the KKC Commercialization Agreement and was a separate performance obligation in our contracts pursuant to research plans under the agreements, was as follows:


Beginning balance	$	317
Recognized as revenue:
Revenue recognized upon satisfaction of performance obligations		(317	)
Ending balance	$	—

The timing of revenue recognition, invoicing and cash collections results in billed accounts receivable and unbilled receivables (contract assets) and deferred revenue (contract liabilities). We invoiced our customers in accordance with agreed-upon contractual terms, typically at periodic intervals or upon achievement of contractual milestones. Invoicing may have occurred subsequent to revenue recognition, resulting in unbilled receivables. Advanced payments from our customers before revenue was recognized resulted in contract liabilities.

Revenues from Collaborators

At contract inception, we assessed whether the collaboration arrangements were within the scope of ASC Topic 808 Collaborative Agreements (Topic 808), to determine whether such arrangements involved joint operating activities performed by parties that were both active participants in the activities and exposed to significant risks and rewards dependent on the commercial success of such activities. This assessment was performed based on the responsibilities of all parties in the arrangement. For collaboration arrangements within the scope of Topic 808 that contain multiple units of account, we first determined which units of account within the arrangement were within the scope of Topic 808 and which elements were within the scope of Topic 606. For units of account within collaboration arrangements that were accounted for pursuant to Topic 808, an appropriate recognition method was determined and applied consistently, by analogy to authoritative accounting literature. For elements of collaboration arrangements that were accounted for pursuant to Topic 606, we recognized revenue as discussed above. Consideration received that did not meet the requirements to satisfy Topic 606 revenue recognition criteria was recorded as deferred revenue and classified as either current or long-term deferred revenue based on our best estimate of when such amounts would be recognized.

Disposition of Non-Financial Assets

The Company accounts for infrequent dispositions of assets in its product pipeline in accordance with ASC 610-20, Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets, which requires dispositions of long-lived assets that are not a discontinued operation be accounted for on a net basis and included in income from continuing operations before income taxes in accordance with ASC 350, Intangible Assets - Goodwill and Other. Proceeds from sales designated as dispositions of non-financial assets are classified as cash flows from investing activities in the condensed consolidated statements of cash flows.

Net (Loss) Income Per Share

Basic and diluted net (loss) income per share is computed using the weighted-average number of shares of common stock outstanding during the period, less any shares subject to repurchase or forfeiture. There were no shares of common stock subject to repurchase or forfeiture for the three and nine months ended March 31, 2025 and 2024. Diluted net (loss) income per share is computed based on the sum of the weighted-average number of common shares and potentially dilutive common shares outstanding during the period determined using the treasury-stock and if-converted methods.

For purposes of the diluted net (loss) income per share calculation for the three and nine months ended March 31, 2025 and 2024, potentially dilutive securities are excluded from the calculation of diluted net (loss) income per share because their weighted-average exercise prices were above our weighted-average share price as of March 31, 2025 and 2024, respectively, therefore, basic and diluted net (loss) income per share were the same for the three and nine months ended March 31, 2025 and 2024.

The following table presents potentially dilutive shares that have been excluded from the calculation of net (loss) income per share because of their anti-dilutive effect (in thousands):


	For the Three Months Ended March 31,				For the Nine Months Ended March 31,
	2025		2024		2025		2024
Stock options		870		1,373		870		1,373
Warrants		103		103		103		103
Total anti-dilutive shares		973		1,476		973		1,476

Recent Accounting Pronouncement

Recently Issued

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (FASB) or other standards setting bodies that are adopted as of the specified effective date. The Company believes the impact of recently issued standards and any issued but not yet effective standards will not have a material impact on its condensed consolidated financial statements upon adoption.

In November 2023, the FASB issued Accounting Standard Update (ASU) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires a public entity to disclose significant segment expenses and other segment items on an annual and interim basis and provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. Additionally, it requires a public entity to disclose the title and position of the Chief Operating Decision Maker. This ASU does not change how a public entity identifies its operating segments, aggregates them, or applies the quantitative thresholds to determine its reportable segments. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We expect this ASU to only impact our disclosures with no impact to our results of operations, cash flows, and financial condition.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which focuses on the rate reconciliation and income taxes paid. ASU No. 2023-09 requires a public business entity (PBE) to disclose, on an annual basis, a tabular rate reconciliation using both percentages and currency amounts, broken out into specified categories with certain reconciling items further broken out by nature and jurisdiction to the extent those items exceed a specified threshold. In addition, all entities are required to disclose income taxes paid, net of refunds received disaggregated by federal, state/local, and foreign and by jurisdiction if the amount is at least 5% of total income tax payments, net of refunds received. For PBEs, the new standard is effective for annual periods beginning after December 15, 2024, with early adoption permitted. An entity may apply the amendments in this ASU prospectively by providing the revised disclosures for the period ending December 31, 2025 and continuing to provide the pre-ASU disclosures for the prior periods, or may apply the amendments retrospectively by providing the revised disclosures for all periods presented. We expect this ASU to only impact our disclosures with no impact to our results of operations, cash flows, and financial condition.

In November 2024, the FASB issued ASU No. 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40) (ASU 2024-03). The amendments in this update require disclosure, in the notes to the financial statements, of specific expense categories present within expense captions presented on the face of the statement of operations within continuing operations of PBEs. The amendments in this update are effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027. Early adoption is permitted. The amendments should be applied either prospectively to financial statements issued for reporting periods after the effective date of this ASU or retrospectively to any and all prior periods presented in the financial statements. The impact of adoption of this ASU on the Company’s disclosures is currently being evaluated.

In January 2025, the FASB issued ASU No. 2025-01, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. The amendment in this update clarifies the effective date of ASU 2024-03, which is that PBEs are required to adopt the guidance in annual reporting periods beginning after December 15, 2026 and in interim periods within annual reporting periods beginning after December 15, 2027. The impact of adoption of this ASU on the Company’s disclosures is currently being evaluated.

- Definition

Disclosure of accounting policy for investment in financial asset.

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