Revenue and Gross Margin - Revenue for fiscal 2024 increased by 8.8millionprimarilyduetoincreasesinproductengineeringservicesrevenueof9.1 million[534] - Product sales revenue growth was driven by Chiplet and Optical products, offset by a modest decline in AEC products, resulting in a more diverse product mix in fiscal 2024[535] - Gross margin increased by 4.2 percentage points in fiscal 2024, driven by higher product engineering services revenue and improved product sales gross margin from 46.9% to 51.4%[536][537] - Total cost of revenue decreased by 5.7% to 73.5millioninfiscal2024comparedto78.0 million in fiscal 2023[565] - Gross profit increased by 12.5% to 119.4millioninfiscal2024,withgrossmarginimprovingto61.918.8 million in fiscal 2024, primarily due to 7.0millioninpersonnelcostsand8.0 million in share-based compensation[538] - Selling, general and administrative expenses increased by 11.9millioninfiscal2024,drivenby2.6 million in personnel costs and 7.0millioninshare−basedcompensation[539]−Researchanddevelopmentexpensesincreasedby24.495.5 million in fiscal 2024, representing 49.5% of total revenue[565] - Impairment charges decreased by 68.2% to 765,000infiscal2024,representing0.47.0 million in fiscal 2024 due to a full valuation allowance for U.S. deferred tax assets[568] Cash Flow and Financing - Net cash used in investing activities was 130.9millioninfiscal2023,primarilydueto21.7 million in property and equipment purchases and 159.2millionincertificatesofdepositinvestments[544]−Netcashprovidedbyfinancingactivitieswas4.9 million in fiscal 2023, mainly from 5.5millioninproceedsfromemployeeshareoptionsandsharepurchaseplans[546]−Netcashusedinoperatingactivitieswas24.6 million in fiscal 2023, driven by a 16.5millionnetlossand50.4 million in working capital outflows[571] - Net cash used in investing activities was 249.5millioninfiscal2024,primarilydueto169.8 million in investments in certificates of deposit and 15.7millioninpropertyandequipmentpurchases[572]−Netcashprovidedbyfinancingactivitieswas175.3 million in fiscal 2024, mainly from 173.4millioninproceedsfromafollow−onpublicoffering[573]−Thecompanymaintainssufficientcashandcashequivalentstomeetitsneedsforatleastthenext12months[569]InventoryandAssets−Inventorytotaled25.9 million as of April 27, 2024, representing 4.3% of total assets, valued at the lower of cost and net realizable value[563] Foreign Exchange and Risk Management - Foreign exchange sensitivity analysis showed that a 10% weakening of the U.S. dollar would increase operating expenses by approximately 2% in fiscal 2024[554] - The company may enter into foreign currency derivatives in the future to hedge against foreign exchange risks[581] Customer Concentration - Two customers accounted for 39% and 15% of total revenue in fiscal 2024, with the top 10 customers representing approximately 86% of total revenue[117]