Western Digital Corporation (WDC) FY2026 10-K and 10-Q Summary: Business, Risk Factors, MD&A

Business

From the fiscal 2026 Form 10-K, accession 0001628280-26-057139.

Western Digital, founded in 1970 and headquartered in San Jose, California, develops, manufactures and sells data storage devices and solutions based on hard disk drive (HDD) technology. Following the February 21, 2025 separation of its Flash business into Sandisk Corporation, the company's continuing operations consist of a single reportable segment, HDD. Prior to that separation it ran two reportable segments, HDD and Flash; Sandisk is presented as discontinued operations for all pre-separation periods, so every continuing-operations figure in the fiscal 2024, 2025 and 2026 comparatives is a hard-drive-only figure.

Products are sold under the Western Digital and WD brands into three end markets:

• Cloud, the largest and fastest-growing market, comprising high-capacity

enterprise HDDs sold to public and private cloud environments, hyperscalers, neoclouds and enterprise customers, for tiered storage models, data centers and smart video. Cloud was 89% of net revenue in fiscal 2026 ($11.49 billion of $12.92 billion).

• Client, high-performance desktop and notebook HDDs sold to OEM and channel

customers. $726 million, roughly 6% of revenue.

• Consumer, retail and channel external HDD storage products. $703 million,

roughly 5% of revenue.

Technology and R&D. The company designs and manufactures substantially all of the recording heads and magnetic media in its drives, an unusually vertically integrated position that makes it dependent on its own execution rather than on merchant component technology. Its high-capacity roadmap runs through ePMR, OptiNAND, UltraSMR, heat-assisted magnetic recording (HAMR) and triple-stage actuators. It holds approximately 4,700 active patents worldwide, and considers non-patented process technology an important part of its position.

Manufacturing. Vertically integrated, in-house assembly and test operations are concentrated in Prachinburi and Bang Pa-In, Thailand; Penang, Johor Bahru and Kuching, Malaysia; Laguna, Philippines; Shenzhen, China; and San Jose and Fremont, California. Manufacturing is clean-room, high-volume and yield-sensitive; contract manufacturers are used where strategically advantageous. Multiple suppliers are generally retained, but some components come from sole or single sources.

Competition. HDD competitors are Seagate Technology Holdings plc and Toshiba Electronic Devices & Storage Corporation, plus NAND flash suppliers offering alternative storage technologies and storage-systems providers. Management frames its edge as areal density leadership, cost efficiency, a global manufacturing footprint and total cost of ownership advantage for cloud customers.

Customers and concentration. In fiscal 2026 the top 10 customers were 73% of net revenue and three customers were 16%, 15% and 13% respectively. Concentration has risen sharply: the top 10 were 68% in fiscal 2025 and 55% in fiscal 2024, and in fiscal 2024 no single customer reached 10%. International sales were 60% of net revenue in fiscal 2026 (55% in 2025, 58% in 2024). The company increasingly sells under long-term agreements committing both sides to volumes, often at predetermined or formula-based prices.

Other. Sales incentive and marketing programs (price protection, reimbursements) reduced gross revenue by 9% in fiscal 2026 (10% in 2025, 11% in 2024). Products are generally warranted for up to five years. Approximately 40,000 people were employed at the end of fiscal 2026 across 24 countries, roughly 88% in Asia Pacific, 11% in the Americas and under 1% in EMEA. The business is cyclical and dependent on the buying patterns of large Cloud customers, though management describes that variability as "much less than in the past."

Risk factors

Condensed from Item 1A of the fiscal 2026 Form 10-K, accession 0001628280-26-057139.

Customer concentration. Cloud was 89% of fiscal 2026 revenue and the top 10 customers 73%, with three customers each above 10%. Loss of, or reduced orders from, a key customer, including through regulation, government action, or acquisition by a competitor, would directly hit results. Hyperscalers could lower AI infrastructure investment; the effect of generative AI on storage demand is still unfolding and hard to forecast. Customer consolidation would increase buyer leverage on price.

Technology transitions. The company must execute the transition to higher areal density recording, including HAMR. Failure to adapt, to qualify products through lengthy customer testing, or to hit manufacturing yields on new technologies would pressure gross margin and market position. Vertical integration means more capital expenditure and higher fixed costs than a non-integrated competitor would carry. A shift of workloads away from cloud toward on-premises hardware, or new data-optimization techniques that slow data growth, could reduce demand and strand investments made in anticipation of it. The customer mix is also shifting toward neoclouds, which requires matching scale and price points.

Long-term agreements. Multi-quarter and multi-year commitments at predetermined or formula-based prices can prevent the company from capturing rising prices or supply shortages (opportunity cost), and expose it to contractual damages, pricing or volume reductions or early termination if it cannot deliver the agreed quantities and specifications. If a customer breaches its purchase obligations, contractual remedies are expected to offset only some of the lost revenue, and enforcing them is costly and could damage the relationship.

Supply chain. Dependence on a limited number of qualified suppliers, some sole source, for preamps, controllers, DRAM, equipment, materials, and for portions of wafer test and assembly. Supplier consolidation, supplier financial deterioration, trade restrictions and cancelled or deferred purchase commitments (which have generated fees and penalties) are all live exposures.

Geopolitics, tariffs and trade. A large share of revenue and most production is international. Named exposures include Chinese export restrictions on rare earth minerals and related materials critical to semiconductor and hard drive manufacturing, escalation of the Iran conflict and Middle East tensions disrupting logistics routes, and U.S. trade-policy and tariff changes that can be announced with little notice. Tariffs may raise input costs that the company cannot pass through, and retaliatory measures may reduce demand.

Industry cyclicality and forecasting. Demand and pricing depend on hyperscaler spending plans, storage supply/demand balance and competitor actions. Excess capacity has historically produced underutilization charges, inventory write-downs and ASP declines. Forecasting is difficult, and long component lead times force orders months ahead of demand.

Operational concentration. Operations are conducted at large, purpose-built facilities in California and across Asia; the geographic concentration of manufacturing sites amplifies the impact of any fire, flood, earthquake, power outage, contamination event or labor disruption. Insurance for natural disasters and facility damage is limited or, in some cases, absent.

Cybersecurity. The company has experienced cybersecurity incidents that caused business disruption and remediation expense, and expects increasingly sophisticated AI-assisted attacks, including deepfake-based social engineering and prompt-injection attacks against the AI systems it uses. Its own products and cloud services are also targets, and cloud services have been taken offline in the past in response. Management states that, as of the 10-K, known cybersecurity risks are not believed to have materially affected the business.

AI adoption risk (own use). Flawed, biased or non-compliant AI outputs, IP ownership ambiguity from AI-assisted product development, unauthorized employee use of generative tools, and the EU AI Act and comparable regimes. Separately, environmental scrutiny of data-center power consumption could constrain the AI build-out its Cloud revenue depends on.

Financial and capital structure. The 3.00% convertible senior notes due 2028 are currently convertible because the sale-price condition has been triggered, so they were classified as current debt at July 3, 2026; settlement requires cash for principal and may require issuing a significant number of shares for the premium. Bank debt carries a variable rate tied to corporate credit ratings. Dividends and buybacks are discretionary and reducing or discontinuing them could depress the share price.

Tax. The One Big Beautiful Bill Act of 2025 and the OECD 15% global minimum tax both affect the worldwide effective rate. Portions of operations sit under tax holidays that expire or can be terminated. The company is under IRS examination for certain fiscal years. Separation tax risk: if the Sandisk separation were ultimately determined not to qualify as tax-free for U.S. federal income tax purposes, Western Digital, Sandisk or stockholders could incur significant tax liabilities.

Legal. IP litigation is endemic to the storage industry; the company is also exposed to product-defect, recall and epidemic-failure claims (products are warranted one to five years), data-privacy regulation, and indemnification obligations to customers, suppliers, directors and officers. Bylaws designate Delaware as the exclusive forum for most stockholder claims.

Litigation specifics (Note 16 of the fiscal 2026 10-K): In the SPEX Technologies patent case, a jury awarded $316 million in October 2024 and the court added $237 million of prejudgment interest in January 2025, but on June 16, 2025 the court found insufficient evidence to determine damages and entered an amended judgment on June 27, 2025 awarding nominal damages of $1 with no prejudgment interest or costs. Both sides have appealed; the company believes a loss is not probable and has accrued nothing. The MRT HDD-media patent matter, for which $384 million of liability was recognized in fiscal 2024, was globally settled in April 2025 for $130 million, producing a $201 million reversal of previously recorded operating charges.

Management's discussion and analysis, fiscal 2026

From Item 7 of the fiscal 2026 Form 10-K, accession 0001628280-26-057139. All figures are continuing operations (HDD) unless stated.

Framing. Fiscal 2026 ended July 3, 2026 and comprised 53 weeks, the first quarter had 14 weeks, the remaining three had 13 each. Fiscal 2025 and 2024 were 52-week years. Management describes the demand backdrop as increasing long-term cloud storage demand amplified by AI and hybrid-data workloads, driving demand for higher-capacity drives that carry greater manufacturing complexity and longer lead times; customers are engaging earlier and extending the duration of commercial arrangements, which improves visibility.

Revenue. Net revenue rose 36% to $12,919 million from $9,520 million, driven by a 25% increase in exabytes sold and an 8% increase in ASPs per exabyte. Cloud rose 38% (exabytes +27%, ASP/exabyte +8%) on strong demand for high-capacity enterprise products and an improved pricing environment. Client rose 31% (exabytes +3%, ASP/exabyte +26%); Consumer rose 13% (exabytes +1%, ASP/exabyte +12%). By geography: Americas $5,682 million, Asia $5,123 million, EMEA $2,114 million.

Margins and operating income. Gross profit rose $2.62 billion to $6,311 million and gross margin rose 10.1 points to 48.9% (38.8% in fiscal 2025, 28.1% in fiscal 2024), on higher shipment volume, a better cost structure on newer-generation products, mix shift toward higher-capacity drives and improved pricing. R&D rose $167 million or 17% to $1,161 million ($70 million of incremental product development, $75 million of higher compensation on increased headcount and variable pay). SG&A fell $17 million or 3% to $551 million, because fiscal 2025 carried the final planning and execution costs of the separation. Fiscal 2025 also carried a $198 million Litigation matter credit, the MRT settlement reversal, with no corresponding line in fiscal 2026; the absence of that credit is the largest single reason total operating expenses rose $500 million, to $1,858 million from $1,358 million. Business realignment charges were $146 million (versus a $6 million credit in 2025), comprising $97 million of cash employee termination benefits, $9 million stock-based, $33 million of asset impairments, the company cancelled certain facility projects and impaired the related construction in progress while realigning capacity, and $7 million of contract termination and other. Operating income was $4,453 million, a 34.5% operating margin, up from $2,334 million (24.5%).

Below the operating line, the dominant fiscal 2026 item. Total interest and other income (expense), net swung by $6.66 billion, or 553%, to +$5,452 million. The driver is a non-cash mark-to-market gain of $6,498 million on the retained interest in Sandisk, against a $772 million loss the prior year. Offsetting costs: $545 million on the debt-for-equity exchange (versus $100 million in 2025), $254 million on the equity-for-equity exchanges, and $108 million on the convertible notes transactions. Interest expense fell $192 million to $165 million on lower debt.

Taxes. Income before taxes was $9,905 million; income tax expense $481 million; the effective tax rate was 5% (versus negative 45% in fiscal 2025 and negative 4% in 2024). The rate sits far below the 21% U.S. federal statutory rate mainly because the Sandisk retained-interest gain is tax-free as a consequence of the separation, plus the FDDEI deduction, credits, and jurisdictional mix. The provision includes global minimum tax for Malaysia and Thailand, where the company holds a tax holiday. Fiscal 2025's negative rate reflected a one-time $690 million deferred tax benefit from an inter-entity asset transfer executed in anticipation of operating as a standalone HDD business in a GMT environment.

Net income. Net income from continuing operations was $9,424 million (72.9% of revenue) versus $1,643 million in fiscal 2025 ($1,889 million including the $246 million Sandisk result reported as discontinued operations) and a $765 million loss in fiscal 2024 (a $798 million total-company loss). Read carefully: roughly two-thirds of pre-tax income was the untaxed, non-cash Sandisk mark-to-market gain, not operating earnings. Diluted EPS was $24.28 on $9,298 million attributable to common shareholders and 383 million diluted shares.

Separation and Sandisk monetization. The February 21, 2025 separation distributed 80.1% of Sandisk to Western Digital stockholders and left the company with a retained 19.9% interest, 28.8 million shares, measured at fair value each period. That stake was fully monetized during fiscal 2026 and 2025 in a sequence of transactions: 21.3 million shares exchanged in June 2025 to cut roughly $800 million of Term Loan A-3; 5.8 million shares in February 2026 in a tax-free exchange that further reduced debt and fully redeemed the 4.75% senior unsecured notes due 2026, 2.85% senior notes due 2029, 3.10% senior notes due 2032 and Term Loan A-3; and the remaining 1.7 million shares in two fourth-quarter equity-for-equity exchanges that retired 4.8 million of Western Digital's own shares. As of July 3, 2026 the company held no Sandisk shares. The mark-to-market gain therefore does not recur.

Capital allocation. All remaining preferred shares converted into 7 million common shares in February 2026. In June 2026 the company settled $32 million principal of tendered 2028 convertible notes, electing to pay an additional $328 million of cash for the conversion premium rather than issue 0.8 million shares, and separately settled $858 million principal of 2028 convertible notes for $860 million of cash (principal plus a small inducement) and 21.3 million shares. Fiscal 2026 dividends were $0.50 per common share, $174 million in total, plus $10 million of cash dividends to preferred holders, $8 million of the 6.25% cumulative preferred dividend declared and paid before the February 2026 conversion, and $2 million under the preferred's right to participate in the common dividend, for $184 million of dividends paid in the year. Buybacks: the board authorized $2.0 billion in the prior fiscal year and an additional $4.0 billion in February 2026; 14.7 million shares were repurchased in fiscal 2026 for $2.59 billion, with $3.26 billion remaining available at year-end. Repurchases plus the cash-settled conversion premium totalled $2.92 billion and had an effective impact of roughly 15.5 million shares.

Cash flow and liquidity. Operating cash flow was $3,929 million (fiscal 2025: $1,691 million; fiscal 2024: negative $294 million), driven by improved profitability. Working capital consumed $658 million, versus $1.03 billion the prior year: a $627 million decrease in taxes payable on payment timing, a $541 million increase in receivables on shipment growth and a $218 million inventory build, partly offset by a $385 million increase in payables, $144 million of accrued compensation and $230 million from other assets and liabilities. Investing used $429 million, essentially $418 million of capital expenditure. Financing used $4,032 million: $2.59 billion of buybacks, $1.22 billion to settle part of the 2028 convertible notes, $1.66 billion of other debt repayment, $376 million of taxes on vested stock awards and $184 million of dividends, against $1.95 billion drawn on a bridge loan and the revolving credit facility and $64 million from employee stock plans. Cash fell $535 million to $1,579 million, of which $1.08 billion sat outside the U.S.

Balance sheet and debt. Total assets were $13,861 million, total liabilities $4,997 million and total equity $8,864 million at July 3, 2026. Debt is now small and entirely current: $710 million principal of 3.00% convertible notes due 2028 and $350 million drawn on the revolving credit facility maturing January 2027, $1,052 million of carrying value net of issuance costs, against $4,711 million a year earlier. The 2028 notes remain convertible through the calendar quarter ending September 30, 2026 on the sale-price condition; $343 million of principal had already been tendered at year-end and management said it believes the remaining $367 million "will likely be tendered in the next few months," expecting to use $710 million of cash for principal with substantially all of any premium settled in shares. $900 million of revolver capacity remained available.

Forward statements from management. Capital expenditure is expected to average 4% to 6% of net revenue over the next five years, and fiscal 2027 capital expenditure is expected to be higher than fiscal 2026 because of investments in heads and media operations and in automation. Unrecognized tax benefits were approximately $610 million (plus $130 million of accrued interest and penalties) at year-end, with net cash payments of about $136 million expected after offsetting receivables; $349 million of the gross amount is reasonably expected to be paid within twelve months. Accrued global minimum tax liabilities of $89 million are not expected to be paid until the second quarter of fiscal 2028. Management believes cash on hand plus the revolver will fund working capital, debt, dividends, capital expenditure and buybacks for at least the next twelve months.

Most recent periods

Fourth quarter of fiscal 2026 (April 4 – July 3, 2026), the newest discrete quarter, reported in the results release furnished on Form 8-K on August 5, 2026 (accession 0001628280-26-053305). Revenue of $3,747 million, gross profit of $2,028 million (a 54.1% gross margin, up from 50.2% in the third quarter and 41.0% a year earlier), operating income of $1,563 million (41.7% operating margin), and net income of $3,195 million. Operating expenses were $465 million, including $43 million of business realignment charges. Diluted EPS was $8.21 on 389 million diluted shares. The quarter was a normal 13 weeks; the extra week of the 53-week year fell in the first quarter.

Third quarter of fiscal 2026 (ended April 3, 2026), from the Form 10-Q, accession 0001628280-26-029054. Revenue rose 45% year over year on a 34% increase in exabytes sold and a 9% increase in ASP per exabyte; gross profit rose $764 million and gross margin rose about 10 points; R&D rose $49 million and SG&A $39 million on higher variable compensation. The $2.73 billion quarterly Sandisk mark-to-market gain and $545 million of debt-for-equity exchange costs both fell in this quarter. At April 3, 2026 the company still held 1.7 million Sandisk shares and $1.60 billion principal of the 2028 convertible notes; it obtained investment grade ratings from two agencies during the quarter, which released the guarantees and collateral on the revolving credit facility. Management stated that trade-policy and tariff changes had not materially affected results through the third quarter.

Outlook for the first quarter of fiscal 2027, given with the August 5, 2026 results (accession 0001628280-26-053305), is non-GAAP only: revenue of $4.1 billion plus or minus $100 million (up 42% to 49% year over year), gross margin of 55% to 56%, operating expenses of $390–400 million, interest and other expense of about $15 million, a tax rate of about 17%, diluted EPS of $4.00 plus or minus $0.15, and roughly 388 million diluted shares. Management's stated expectation for fiscal 2027 is continued demand durability, further margin expansion and strong free cash flow.

Subsequent events

The fiscal 2026 Form 10-K carries no separate subsequent-events note; its only disclosed post-year-end item is that on August 4, 2026 the board declared a cash dividend of $0.15 per common share, payable September 17, 2026 to holders of record as of September 8, 2026.

Two matters postdate the 10-K itself. On August 26, 2026 the company entered privately negotiated exchange agreements with holders of its 3.00% convertible senior notes due 2028 to exchange approximately $191.0 million aggregate principal amount for approximately $192.7 million in cash (principal plus accrued interest) and shares of common stock representing the remaining conversion value; an amendment filed August 27, 2026 fixed that share count at 4,653,572 shares. The transactions were expected to close on or after September 2, 2026 (accessions 0001193125-26-365796 and 0001193125-26-371309). This continues, past year-end, the retirement of the 2028 convertible notes that management flagged in the 10-K as likely over the following months.

No acquisition or divestiture was announced or completed after the fiscal year end in the filings covering this period.