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Related Party Transactions | 6 Months Ended
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Sep. 30, 2025
Related Party Transactions [Abstract] |
Related Party Transactions | 14 - Related Party Transactions Arm China and Acetone Limited Following the restructuring of its direct investment in Arm Technology (China) Co. Limited (“Arm China”) in the fiscal year ended March 31, 2022, the Company has a 10% non-voting ownership interest in Acetone Limited, whose primary asset is a 48.2% interest in Arm China. The Company has no direct material transactions with Acetone Limited. For the three months ended September 30, 2025 and 2024, the Company recognized revenue under the terms of the intellectual property license agreement (“IPLA”) with Arm China of $243.1 million and $147.7 million, re spectively, and recognized expenses under a service share arrangement with Arm China of $14.6 million an d $15.2 million, respectively. For the six months ended September 30, 2025 and 2024, the Company recognized revenue under the terms of the IPLA with Arm China of $444.1 million and $270.3 million, respectively, and recognized expenses under a service share arrangement with Arm China of $28.5 million and $31.4 million, respectively. The Company leases certain assets to Arm China. For the three months ended September 30, 2025 and 2024, the Company recognized rental income from the assets leased to Arm China of $0.3 million and $0.3 million, resp ectively. For the six months ended September 30, 2025 and 2024, the Company recognized rental income from the assets leased to Arm China of $0.5 million and $0.7 million, respectively. As of September 30, 2025, the Company had a net receivable of $315.0 million ($320.5 million receivable less $5.5 million payable) from Arm China. As of March 31, 2025, the Company had a net receivable of $284.6 million ($294.5 million receivable less $9.9 million payable) from Arm China. As of September 30, 2025 and March 31, 2025, the Company had contract liabiliti es of $87.7 million and $104.2 million, respectively, relating to Arm China. For the three months ended September 30, 2025 and 2024, the Company did not recognize any expected credit losses against earnings relating to Arm China. For the six months ended September 30, 2025 and 2024, the Company recognized $0.0 million and $16.0 million, respectively, for expected credit losses against earnings relating to Arm China. As of September 30, 2025 and March 31, 2025, the Company’s allowance for current expected credit losses related to Arm China was $16.0 million, which is reflected in accounts receivable, net on the Condensed Consolidated Balance Sheets. See Note 5 - Equity Investments, for further details of the impact of Acetone Limited on the Company’s results. Other Entities Related by Virtue of Common Control by SoftBank Group During the fiscal year ended March 31, 2025 and the six months ended September 30, 2025, the Company entered into related party transactions with an affiliate of SoftBank Group relating to licensing and service arrangements under the consulting agreement with SoftBank Group (the “Consulting Agreement”). Pursuant to statements of work entered into under the Consulting Agreement during the fiscal year ended March 31, 2025, as amended during the six months ended September 30, 2025, the Company may earn fees for services provided. For the three months ended September 30, 2025 and 2024, revenue from the licensing and servicing arrangements was $177.9 million and $43.2 million, respectively. For the six months ended September 30, 2025 and 2024, revenue from the licensing and servicing arrangements was $304.0 million and $43.2 million, respectively. As of September 30, 2025, the Company had contract assets of $351.5 million and did not have any accounts receivable or contract liabilities from the affiliate of SoftBank Group. As of March 31, 2025, the Company had contract assets of $145.5 million and did not have any accounts receivable or contract liabilities from the affiliate of SoftBank Group. Other Equity Investments The Company has revenue transactions, along with receivable, contract asset and contract liability balances for certain other equity investees, for which the Company has significant influence or, for investments in limited partnerships or certain limited liability companies that maintain a specific ownership account for each investor, for which the Company has more than virtually no influence (i.e., at least 3% to 5% ownership) (such investees, “Significant Influence Investees”). For the three months ended September 30, 2025 and 2024, the Company recognized revenue of $0.8 million and $0.6 million, respectively, from Significant Influence I nvestees. For the six months ended September 30, 2025 and 2024, the Company recognized revenue of $1.4 million and $2.0 million, respectively, from Significant Influence I nvestees. As of September 30, 2025, the Company had contract assets of $1.0 million, contract liabilities of $0.3 million and no accounts receivable related to contracts with Significant Influence Investees. As of March 31, 2025, the Company had accounts receivable of $0.7 million, contract assets of $6.3 million, and contract liabilities of $0.7 million related to contracts with Significant Influence Investees. For the three months ended September 30, 2025 and 2024, the Company recognized aggregate distributions, dividends and returns of capital from certain equity investments of $2.6 million and $1.0 million, respectively. For the six months ended September 30, 2025 and 2024, the Company recognized aggregate distributions, dividends and returns of capital from certain equity investments of $4.4 million and $1.3 million, respectively. Linaro Limited Linaro Limited (“Linaro”) is a not-for-profit entity for which the Company is a member and has significant influence. For the three months ended September 30, 2025 and 2024, the Company incurred subscription and other costs of $2.2 million and $3.0 million, respectively, from Linaro. For the six months ended September 30, 2025 and 2024, the Company incurred subscription and other costs of $4.5 million and $5.4 million, respectively, from Linaro. As of September 30, 2025 and March 31, 2025, $0.3 million and $0.7 million, respectively, was recorded in o ther c urrent liabilities on the Condensed Consolidated Balance Sheets. In February 2023, the Company entered into an agreement with Linaro to sell certain net assets of the Company that meets the definition of a business in exchange for cash consideration of $4.0 million to be paid in equal annual installments over five years. As of September 30, 2025 and March 31, 2025, the total unpaid purchase consideration was $2.4 million, which was recorded in prepaid expenses and other current assets and other non-current assets on the Condensed Consolidated Balance Sheets. Loans to Related Parties As of September 30, 2025 and March 31, 2025, the Company had a loan receivable of $16.9 million and $16.6 million, respectively, with Arduino, a related party, and a loan receivable of $3.2 million and $3.2 million, respectively, with Cerfe Labs, Inc, a related party. During the three and six months ended September 30, 2025, the Company recognized a reversal for the current expected credit loss reserve with respect to its loan receivable from Arduino by $16.8 million based on updated information and risk profile as of September 30, 2025 in selling, general, and administrative operating expenses in the Condensed Consolidated Income Statements. The loan receivable with Cerfe Labs was fully reserved for under current expected credit loss reserve for the periods presented. See Note 6 - Financial Instruments, for further information regarding these loans. As of September 30, 2025 and March 31, 2025, the outstanding balance of the convertible promissory note issued by Ampere, a related party, was $34.5 million and $33.8 million, respectively. The Company’s maximum exposure to loss is the amounts invested in, and advanced to, Ampere as of September 30, 2025. See Note 5 - Equity Investments, for further details on Ampere. Tax Sharing Agreement with SoftBank Group In April 2025, the Company entered into a Tax Sharing Agreement with SoftBank Group (the “Tax Sharing Agreement”). The Tax Sharing Agreement provides for the reimbursement to the Company for any SoftBank Group costs the Company incurs under the U.K. legislation implementing the OECD framework for Pillar Two minimum taxes. The Tax Sharing Agreement did not have a material impact on the Company’s financial statements for the three and six months ended September 30, 2025 and 2024.

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