Lam Research Corporation Reports Financial Results for the Quarter Ended September 28, 2025

Lam Research Corporation (the “Company,” “Lam,” “Lam Research”) today announced financial results for the quarter ended September 28, 2025 (the “September 2025 quarter”).

Highlights for the September 2025 quarter were as follows:

— Revenue of $5.32 billion.

— U.S. GAAP gross margin of 50.4%, U.S. GAAP operating income as a percentage of revenue of 34.4%, and U.S. GAAP diluted EPS of $1.24.

— Non-GAAP gross margin of 50.6%, non-GAAP operating income as a percentage of revenue of 35.0%, and non-GAAP diluted EPS of $1.26.

Key Financial Data for the Quarters EndedSeptember28, 2025 and June 29, 2025(in thousands, except per-share data, percentages, and basis points)U.S. GAAP September 2025 June 2025 Change Q/QRevenue $ 5,324,173 $ 5,171,393 + 3%Gross margin as percentage of revenue 50.4% 50.1% + 30 bpsOperating income as percentage of revenue 34.4% 33.7% + 70 bpsDiluted EPS $ 1.24 $ 1.35 – 8%Non-GAAP September 2025 June 2025 Change Q/QRevenue $ 5,324,173 $ 5,171,393 + 3%Gross margin as percentage of revenue 50.6% 50.3% + 30 bpsOperating income as percentage of revenue 35.0% 34.4% + 60 bpsDiluted EPS $ 1.26 $ 1.33 – 5%

U.S. GAAP Financial Results

For the September 2025 quarter, revenue was $5,324 million, gross margin was $2,685 million, or 50.4% of revenue, operating expenses were $856 million, operating income was 34.4% of revenue, and net income was $1,569 million, or $1.24 per diluted share on a U.S. GAAP basis. This compares to revenue of $5,171 million, gross margin of $2,590 million, or 50.1% of revenue, operating expenses of $849 million, operating income of 33.7% of revenue, and net income of $1,720 million, or $1.35 per diluted share, for the quarter ended June29, 2025 (the “June 2025 quarter”).

Non-GAAP Financial Results

For the September 2025 quarter, non-GAAP gross margin was $2,694 million, or 50.6% of revenue, non-GAAP operating expenses were $832 million, non-GAAP operating income was 35.0% of revenue, and non-GAAP net income was $1,605 million, or $1.26 per diluted share. This compares to non-GAAP gross margin of $2,601 million, or 50.3% of revenue, non-GAAP operating expenses of $822 million, non-GAAP operating income of 34.4% of revenue, and non-GAAP net income of $1,698 million, or $1.33 per diluted share, for the June 2025 quarter.

“Lam's innovations are helping our customers address major AI-driven semiconductor manufacturing inflections,” said Tim Archer, Lam Research's President and Chief Executive Officer. “We are executing well in an environment of tremendous opportunity, and with our expanding portfolio of products and solutions across critical device segments, we are strongly positioned for continued growth.”

Balance Sheet and Cash Flow Results

Cash, cash equivalents, and restricted cash balances increased to $6.7 billion at the end of the September 2025 quarter compared to $6.4 billion at the end of the June 2025 quarter. The increase was primarily the result of cash generated from operating activities, partially offset by cash deployed for capital return activities, and capital expenditures during the quarter.

Deferred revenue at the end of the September 2025 quarter increased to $2.77 billion compared to $2.68 billion as of the end of the June 2025 quarter. Lam's deferred revenue balance does not include shipments to customers in Japan, to whom control does not transfer until customer acceptance. Shipments to customers in Japan are classified as inventory at cost until the time of acceptance. The estimated future revenue from shipments to customers in Japan was approximately $131 million as of September28, 2025 and $342 million as of June29, 2025.

Revenue

The geographic distribution of revenue during the September 2025 quarter is shown in the following table:

Region RevenueChina 43%Taiwan 19%Korea 15%Japan 10%United States 6%Southeast Asia 5%Europe 2%

The following table presents revenue disaggregated between systems and customer support-related revenue:

Three Months Ended September 28, June 29, September 29, 2025 2025 2024 (In thousands)Systems revenue $ 3,547,565 $ 3,437,625 $ 2,392,730Customer support-related revenue and other 1,776,608 1,733,768 1,775,246 $ 5,324,173 $ 5,171,393 $ 4,167,976

Systems revenue includes sales of new leading-edge equipment in deposition, etch, and other wafer fabrication markets.

Customer support-related revenue includes sales of customer service, spares, upgrades, and non-leading-edge equipment from our Reliant® product line.

Outlook

For the quarter ended December28, 2025, Lam is providing the following guidance:

U.S. GAAP Reconciling Non-GAAP ItemsRevenue $5.20 Billion +/- $300 Million – $5.20 Billion +/- $300 MillionGross margin as a percentage of revenue 48.4% +/- 1% $ 2.7 Million 48.5% +/- 1%Operating income as a percentage of revenue 32.9% +/- 1% $ 3.0 Million 33.0% +/- 1%Net income per diluted share $1.15 +/- $0.10 $ 3.5 Million $1.15 +/- $0.10Diluted share count 1.26 Billion – 1.26 Billion

The information provided above is only an estimate of what the Company believes is realizable as of the date of this release and does not incorporate the potential impact of any business combinations, asset acquisitions, divestitures, restructuring, balance sheet valuation adjustments, financing arrangements, other investments, or other significant arrangements that may be completed or realized after the date of this release, except as described below. U.S. GAAP to non-GAAP reconciling items provided include only those items that are known and can be estimated as of the date of this release. Actual results will vary from this model and the variations may be material. Reconciling items included above are as follows:

— Gross margin as a percentage of revenue – amortization related to intangible assets acquired through business combinations, $2.7 million.

— Operating income as a percentage of revenue – amortization related to intangible assets acquired through business combinations, $3.0 million.

— Net income per diluted share – amortization related to intangible assets acquired though business combinations, $3.0 million; amortization of debt discounts, $0.7 million; and associated tax benefit for non-GAAP items ($0.2 million); totaling $3.5 million.

Use of Non-GAAP Financial Results

In addition to U.S. GAAP results, this press release also contains non-GAAP financial results. The Company's non-GAAP results for both the September 2025 and June 2025 quarters exclude amortization related to intangible assets acquired through business combinations, the effects of elective deferred compensation-related assets and liabilities, amortization of note discounts, and the net income tax effect of non-GAAP items. In addition, the September 2025 quarter excludes the impairment of long-lived assets and income tax expense from a change in tax law and the June 2025 quarter excludes the income tax benefit on conclusion of certain tax matters related to a prior business combination.

Management uses non-GAAP gross margin, operating expense, operating income, operating income as a percentage of revenue, net income, and net income per diluted share to evaluate the Company's operating and financial results. The Company believes the presentation of non-GAAP results is useful to investors for analyzing business trends and comparing performance to prior periods, along with enhancing investors' ability to view the Company's results from management's perspective. Tables presenting reconciliations of non-GAAP results to U.S. GAAP results are included at the end of this press release and on the Company's website at https://investor.lamresearch.com.

Caution Regarding Forward-Looking Statements Statements made in this press release that are not of historical fact are forward-looking statements and are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements relate to, but are not limited to: our outlook and guidance for future financial results, including revenue, gross margin, operating income and net income; the benefits of our products; industry opportunities; our execution; our competitive positioning; and our prospects for growth. Some factors that may affect these forward-looking statements include: business, economic, political and/or regulatory conditions in the consumer electronics industry, the semiconductor industry and the overall economy may deteriorate or change; the actions of our customers and competitors may be inconsistent with our expectations; trade regulations, export controls, tariffs, trade disputes, and other geopolitical tensions may inhibit our ability to sell our products; supply chain cost increases, tariffs, export controls and other inflationary pressures have impacted and may continue to impact our profitability; supply chain disruptions, export controls or manufacturing capacity constraints may limit our ability to manufacture and sell our products; and natural and human-caused disasters, disease outbreaks, war, terrorism, political or governmental unrest or instability, or other events beyond our control may impact our operations and revenue in affected areas; as well as the other risks and uncertainties that are described in the documents filed or furnished by us with the Securities and Exchange Commission, including specifically the Risk Factors described in our annual report on Form 10-K for the fiscal year ended June 29, 2025. These uncertainties and changes could materially affect the forward-looking statements and cause actual results to vary from expectations in a material way. The Company undertakes no obligation to update the information or statements made in this release.

Lam Research Corporation is a global supplier of innovative wafer fabrication equipment and services to the semiconductor industry. Lam's equipment and services allow customers to build smaller and better performing devices. In fact, today, nearly every advanced chip is built with Lam technology. We combine superior systems engineering, technology leadership, and a strong values-based culture, with an unwavering commitment to our customers. Lam Research (Nasdaq: LRCX) is a FORTUNE 500® company headquartered in Fremont, Calif., with operations around the globe. Learn more at www.lamresearch.com. (LRCX)

Consolidated Financial Tables Follow.

LAM RESEARCH CORPORATIONCONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(in thousands, except per share data and percentages)(unaudited) Three Months Ended September 28, June 29, September 29, 2025 2025 2024Revenue $ 5,324,173 $ 5,171,393 $ 4,167,976Cost of goods sold 2,639,294 2,581,684 2,165,293Gross margin 2,684,879 2,589,709 2,002,683Gross margin as a percent of revenue 50.4% 50.1% 48.0%Research and development 576,446 580,178 495,358Selling, general and administrative 279,345 268,403 243,128Total operating expenses 855,791 848,581 738,486Operating income 1,829,088 1,741,128 1,264,197Operating income as a percent of revenue 34.4% 33.7% 30.3%Other income (expense), net 30,074 37,853 30,081Income before income taxes 1,859,162 1,778,981 1,294,278Income tax expense (290,502) (58,893) (177,834)Net income $ 1,568,660 $ 1,720,088 $ 1,116,444Net income per share:Basic $ 1.24 $ 1.35 $ 0.86Diluted $ 1.24 $ 1.35 $ 0.86Number of shares used in per share calculations:Basic 1,264,446 1,274,279 1,299,236Diluted 1,269,313 1,276,933 1,304,066Cash dividend declared per common share $ 0.26 $ 0.23 $ 0.23LAM RESEARCH CORPORATIONCONDENSED CONSOLIDATED BALANCE SHEETS(in thousands) September 28, June 29, September 29, 2025 2025 2024 (unaudited) (1) (unaudited)ASSETSCash and cash equivalents $ 6,693,046 $ 6,390,659 $ 6,067,471Accounts receivable, net 3,633,034 3,378,071 2,937,217Inventories 4,095,054 4,307,991 4,209,878Prepaid expenses and other current assets 385,580 440,274 277,802Total current assets 14,806,714 14,516,995 13,492,368Property and equipment, net 2,510,531 2,428,744 2,214,269Goodwill and intangible assets 1,826,950 1,808,685 1,758,344Other assets 2,756,016 2,590,836 2,067,508Total assets $ 21,900,211 $ 21,345,260 $ 19,532,489LIABILITIES AND STOCKHOLDERS' EQUITYCurrent portion of long-term debt and finance lease obligations $ 754,363 $ 754,311 $ 504,682Other current liabilities 5,953,547 5,814,114 4,837,986Total current liabilities 6,707,910 6,568,425 5,342,668Long-term debt and finance lease obligations 3,729,580 3,730,194 4,479,087Income taxes payable 646,044 603,412 664,717Other long-term liabilities 623,925 581,610 574,126Total liabilities 11,707,459 11,483,641 11,060,598Stockholders' equity (2) 10,192,752 9,861,619 8,471,891Total liabilities and stockholders' equity $ 21,900,211 $ 21,345,260 $ 19,532,489(1) Derived from audited financial statements.(2) Common shares issued and outstanding were 1,259,176 as of September28, 2025, 1,268,740 as of June29, 2025, and 1,291,958 as of September29, 2024.LAM RESEARCHCORPORATIONCONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(in thousands, unaudited) Three Months Ended September 28, June 29, September 29, 2025 2025 2024CASH FLOWS FROM OPERATING ACTIVITIES:Net income $ 1,568,660 $ 1,720,088 $ 1,116,444Adjustments to reconcile net income to net cash provided by operating activities:Depreciation and amortization 101,644 98,439 94,295Deferred income taxes (62,875) (151,679) (108,722)Equity-based compensation expense 97,241 94,286 80,011Other, net (1,890) 14,240 (457)Changes in operating assets and liabilities 76,184 778,814 386,900Net cash provided by operating activities 1,778,964 2,554,188 1,568,471CASH FLOWS FROM INVESTING ACTIVITIES:Capital expenditures and intangible assets (185,121) (172,191) (110,588)Other, net (927) 42,940 37Net cash used for investing activities (186,048) (129,251) (110,551)CASH FLOWS FROM FINANCING ACTIVITIES:Principal payments on debt, including finance lease obligations and payments for debt (1,417) (1,485) (934)issuance costsTreasury stock purchases, including excise tax payments (975,791) (1,292,277) (997,035)Dividends paid (291,981) (295,207) (260,985)Reissuance of treasury stock related to employee stock purchase plan – 79,556 -Proceeds from issuance of common stock, net issuance costs – 696 (43)Other, net (12,449) (820) (324)Net cash used for financing activities (1,281,638) (1,509,537) (1,259,321)Effect of exchange rate changes on cash, cash equivalents, and restricted cash (7,059) 29,284 22,682Net change in cash, cash equivalents, and restricted cash 304,219 944,684 221,281Cash, cash equivalents, and restricted cash at beginning of period (1) 6,407,656 5,462,972 5,850,803Cash, cash equivalents, and restricted cash at end of period(1) $ 6,711,875 $ 6,407,656 $ 6,072,084(1) Restricted cash is reported within Other assets in the Condensed Consolidated Balance SheetsNon-GAAP Financial Summary(in thousands, except percentages and per share data)(unaudited) Three Months Ended September 28, June 29, 2025 2025Revenue $ 5,324,173 $ 5,171,393Gross margin $ 2,693,582 $ 2,600,952Gross margin as percentage of revenue 50.6% 50.3%Operating expenses $ 831,916 $ 822,375Operating income $ 1,861,666 $ 1,778,577Operating income as a percentage of revenue 35.0% 34.4%Net income $ 1,604,597 $ 1,697,716Net income per diluted share $ 1.26 $ 1.33Shares used in per share calculation – diluted 1,269,313 1,276,933Reconciliation of U.S. GAAP Net Income to Non-GAAP Net Income(in thousands, except per share data)(unaudited) Three Months Ended September 28, June 29, 2025 2025U.S. GAAP net income $ 1,568,660 $ 1,720,088Pre-tax non-GAAP items:Amortization related to intangible assets acquired through certain business combinations – cost of goods sold 2,687 2,687Elective deferred compensation (“EDC”) related liability valuation increase – cost of goods sold 6,016 8,556EDC related liability valuation increase – research and development 10,828 15,401Amortization related to intangible assets acquired through certain business combinations – selling, general and 538 538administrativeEDC related liability valuation increase – selling, general and administrative 7,219 10,267Impairment of long-lived assets – selling, general and administrative 5,290 -Amortization of note discounts – other income (expense), net 695 689Gain on EDC related asset – other income (expense), net (23,088) (34,102)Net income tax benefit on non-GAAP items (1,698) (1,668)Income tax expense from a change in tax law 27,450 -Income tax benefit on the conclusion of certain tax matters – (24,740)Non-GAAP net income $ 1,604,597 $ 1,697,716Non-GAAP net income per diluted share $ 1.26 $ 1.33U.S. GAAP net income per diluted share $ 1.24 $ 1.35U.S. GAAP and non-GAAP number of shares used for per diluted share calculation 1,269,313 1,276,933Reconciliation of U.S. GAAP Gross Margin, Operating Expenses and Operating Income to Non-GAAP Gross Margin,Operating Expenses and Operating Income(in thousands, except percentages)(unaudited) Three Months Ended September 28, June 29, 2025 2025U.S. GAAP gross margin $ 2,684,879 $ 2,589,709Pre-tax non-GAAP items:Amortization related to intangible assets acquired through certain business combinations 2,687 2,687EDC related liability valuation increase 6,016 8,556Non-GAAP gross margin $ 2,693,582 $ 2,600,952U.S. GAAP gross margin as a percentage of revenue 50.4% 50.1%Non-GAAP gross margin as a percentage of revenue 50.6% 50.3%U.S. GAAP operating expenses $ 855,791 $ 848,581Pre-tax non-GAAP items:Amortization related to intangible assets acquired through certain business combinations (538) (538)EDC related liability valuation increase (18,047) (25,668)Impairment of long-lived assets (5,290) -Non-GAAP operating expenses $ 831,916 $ 822,375U.S. GAAP operating income $ 1,829,088 $ 1,741,128Non-GAAP operating income $ 1,861,666 $ 1,778,577U.S. GAAP operating income as percent of revenue 34.4% 33.7%Non-GAAP operating income as a percent of revenue 35.0% 34.4%

Lam Research Corporation Contacts:

Ram Ganesh, Investor Relations, phone: 510-572-1615, e-mail: investor.relations@lamresearch.com

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