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Significant Accounting Policies (Policies)
 6 Months Ended
Oct. 31, 2025
Accounting Policies [Abstract]  
Earnings Per Share
Earnings Per Share
 
Basic net income or loss per share is computed by dividing the net income or loss for the period by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing the net income for the period by the weighted-average number of shares of common stock plus dilutive potential common stock considered outstanding during the period. Such dilutive shares consist of incremental shares that would be issued upon exercise of the Company’s common stock options.
Revenue Recognition
Revenue Recognition

The Company recognizes revenue in accordance with Accounting Standards Codification ("ASC") 606 ("ASC 606"), Revenue from Contracts with Customers. The objective of the standard is to establish a single comprehensive revenue recognition model that is designed to create greater comparability of financial statements across industries and jurisdictions. Under this standard, companies recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the Company expects to be entitled in exchange for those goods or services.

All revenue is generated from contracts with customers. The Company recognizes revenue when control of these services is transferred to the customer in an amount, referred to as the transaction price, that reflects the consideration to which the Company is expected to be entitled in exchange for those services. The Company determines revenue recognition utilizing the following five steps: (1) identification of the contract with a customer, (2) identification of the performance obligations in the contract (promised goods or services that are distinct), (3) determination of the transaction price, (4) allocation of the transaction price to the performance obligations, and (5) recognition of revenue when, or as, the Company transfers control of the product or service for each performance obligation. The Company records revenues net of any tax assessments by governmental authorities, such as value added taxes, that are imposed on and concurrent with specific revenue generating transactions.

The majority of the Company's revenue arrangements are service contracts that are completed within a year or less. There are a few contracts that range in duration between 1 and 3 years. Substantially all of the Company's performance obligations, and associated revenue, are transferred to the customer over time. Most of the Company's contracts can be terminated by the customer without cause. In the event of termination, the Company's contracts provide that the customer pay the Company for services rendered through the termination date. The Company generally receives compensation based on a predetermined invoicing schedule relating to specific milestones for that contract.

Amendments to contracts are common. The Company evaluates each amendment which meets the criteria of a contract modification under ASC 606. Each modification is further evaluated to determine whether the contract modification should be accounted for as a separate contract or as a continuation of the original agreement.

The Company accounts for amendments as a separate contract as they meet the criteria under ASC 606-10-25-12.

Pharmacology Study and Other Services

The Company generally enters into contracts with customers to provide oncology services with payments based on fixed-fee arrangements. At contract inception, the Company assesses the services promised in the contracts with customers to identify the performance obligations in the arrangement. The Company's fixed-fee arrangements for oncology services are considered a single performance obligation because the Company provides a highly-integrated service.

The Company recognizes revenue over time using a progress-based input method since there is no single output measure that would fairly depict the transfer of control over the life of the performance obligation. Revenue is recognized for the single performance obligation over time due to the Company's right to payment for work performed to date and the performance does not create an asset with an alternative use. The Company recognizes revenue as portions of the overall performance obligation are completed as this best depicts the progress of the performance obligation.

License Revenue

The Company also enters into contracts to provide access to certain PDX model data via a license agreement with payments based on a fixed-fee arrangement. The Company's current data licenses contain a single performance obligation of delivering access to the licensed data. The Company recognizes this license revenue at a point in time when the performance obligation is satisfied by delivery of the access to the data.

Incremental Costs of Obtaining a Contract (Sales Commissions)
Under ASC 606, the costs of obtaining a contract can be expensed immediately, rather than capitalized and amortized, if the amortization period is one year or shorter. Sales commissions for the Company represent contract costs with a term of one year or less. Therefore, under ASC 606, the Company elected the practical expedient to expense these costs as incurred.

Accounts Receivables, Unbilled Services and Deferred Revenue

In general, billings and payments are established by contractual provisions including predetermined payment schedules, which may or may not correspond to the timing of the transfer of control of the Company's services under the contract. In general, the Company's intention in its invoicing (payment terms) is to maintain cash neutrality over the life of the contract. Upfront payments, when they occur, are intended to cover certain expenses the Company incurs at the beginning of the contract. Neither the Company nor its customers view such upfront payments and contracted payment schedules as a means of financing. Unbilled services primarily arise when the revenue recognized exceeds the amount billed to the customer. Such situations occur due to divergences between revenue recognition and the invoicing milestones which are based on predetermined payment terms. Unbilled services are classified as a component of accounts receivable on the balance sheet.

Accounts receivable are customer obligations due under normal trade terms. The Company extends credit to its customers based on their creditworthiness and historical data and performs ongoing credit evaluations of our customers’ financial condition. The Company maintains a provision for estimated credit losses related to accounts receivable for future expected bad debt resulting from the inability or unwillingness of our customers to make required payments. We estimate our provision for estimated credit losses based on relevant information such as historical experience, current economic conditions, and future expectations of specifically identified customer balances. This provision is adjusted as appropriate to reflect current conditions. After all attempts to collect a receivable have failed, the receivable is written off against the provision. We do not obtain collateral from our customers to secure accounts receivable.

Deferred revenue consists of unearned payments received in excess of revenue recognized. As the contracted services are subsequently performed and the associated revenue is recognized, the deferred revenue balance is reduced by the amount of the revenue recognized during the period. Deferred revenue is classified as a current liability on the condensed consolidated balance sheet as the Company expects to recognize the associated revenue in less than one year.
Segment Reporting
Segment Reporting

Operating segments are identified as components of an enterprise for which separate discrete financial information is available for evaluation by the Company’s chief operating decision maker (“CODM”) and relied upon when making decisions regarding resource allocation and assessing performance. When evaluating the Company’s financial performance, the CODM reviews total revenues, total expenses, and expenses by functional classification, using this information to make decisions on a Company-wide basis.
The Company currently operates in one reportable segment pertaining to oncology services. The CODM for the Company is the Chief Executive Officer (the “CEO”). The Company’s CEO reviews operating results on an aggregate basis and manages the Company’s operations on a consolidated basis for the purpose of evaluating financial performance and allocating resources. Accordingly, the Company has determined that it has a single reportable and operating segment structure. The CEO uses net income or loss as well as revenue results to allocate resources in the annual budgeting and forecasting process and also uses that measure as a basis for evaluating financial performance regularly by comparing actual results with established budgets and forecasts. All significant expense categories are presented on our condensed Consolidated Statements of Operations. The measure of segment assets is reported on the condensed Consolidated Balance Sheet as total assets. Segment revenues and expenses are identical to that disclosed in the accompanying condensed Consolidated Statements of Operations.
Reclassifications
Reclassifications

Certain prior period amounts have been reclassified to conform to the current period’s presentation.
Recently Issued Accounting Pronouncements
Recently Issued Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, “Improvements to Tax Disclosures” (Topic 740). The new guidance is intended to enhance the transparency and decision usefulness of income tax disclosures through changes to the rate reconciliation and the income taxes paid information disclosed. The ASU is effective retrospectively for fiscal years beginning after December 15, 2024, with early adoption permitted. The Company adopted this ASU as of May 1, 2025 and it has been included in the required disclosures in our financial statements since.
In November 2024 and January 2025, the FASB issued ASU 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures" (Subtopic 220-40) "Disaggregation of Income Statement Expenses" and ASU 2025-01 "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures" (Subtopic 220-40): Clarifying the Effective Date". The new guidance is intended to enhance transparency and disclosures by requiring public business entities to disclose additional information about specific expense categories in the notes to financial statements at interim and annual reporting periods. The ASU is effective for the first annual reporting periods after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is in the process of evaluating the impact that the adoption of this ASU will have on its financial statements and related disclosures, which is not expected to be material.
Leases The Company accounts for its leases under FASB ASC Topic 842, Leases. Under this guidance, arrangements meeting the definition of a lease are classified as operating or financing leases and are recorded on the consolidated balance sheet as both a right-of-use ("ROU") asset and lease liability, calculated by discounting fixed lease payments over the lease term at the rate implicit in the lease, if applicable, or the Company’s incremental borrowing rate. As the Company's leases do not provide an implicit rate, the Company uses an incremental borrowing rate based on the information available at the lease commencement date in determining the present value of lease payments. Lease liabilities are increased by interest and reduced by payments each period, and the right-of-use asset is amortized over the lease term. For operating leases, interest on the lease liability and the amortization of the right-of-use asset result in straight-line rent expense over the lease term.