WDC

Western Digital Corp. 10-K Summary (Fiscal Year Ended June 30, 2006)

Business Context and Reporting Period

Western Digital Corporation (WDC) designs, develops, manufactures, and sells hard drives for desktop, mobile, enterprise, and consumer electronics (CE) markets. The company operates manufacturing facilities in Malaysia and Thailand and designs/manufactures magnetic heads in California and Thailand. This report covers the 52-week fiscal year ended June 30, 2006. The filing includes adjustments to previously issued financial statements for fiscal years 2005 and 2004 to record additional non-cash stock-based compensation expense related to historical stock option grants.

Key Financial Metrics

Unit Shipments: 73.3 million units in 2006 vs. 61.4 million in 2005 (+19.4%).
Average Selling Price (ASP): $59 per unit (flat vs. prior year).

Material Changes vs. Prior Period

• Revenue Growth: Driven by increased unit shipments in the desktop market and significant expansion into non-desktop sources (mobile, CE, enterprise), which grew from 21% of revenue in 2005 to 29% in 2006.
• Margin Expansion: Gross margin percentage improved to 19.1% due to manufacturing efficiencies, lower customer returns (quality improvements), and higher average storage capacity per drive, offsetting moderate price declines.
• Operating Expenses: R&D expenses increased 23.8% to $297 million, driven by new product platform development and the adoption of SFAS No. 123-R (stock-based compensation). SG&A expenses increased 7.1% to $166 million.
• Financial Adjustments: The company adjusted prior years' financials to recognize approximately $21 million in additional stock-based and tax-related expenses related to option grants from 1998-2003. This reduced previously reported diluted EPS by $0.01 for fiscal 2005 and 2004.

Guidance, Outlook, and Risks

Outlook: Management expects capital expenditures for fiscal 2007 to range between $350 million and $375 million, focused on advanced head technologies and capacity expansion. The company anticipates continued growth in the mobile and CE markets.

Key Risks:

• Stock Option Litigation: Several shareholder derivative actions have been filed challenging historical stock option granting practices. The company is defending these actions, which could result in significant costs and management distraction.
• Supply Chain: Dependence on a limited number of suppliers for critical components (e.g., media, heads) creates risks of shortages or price increases. The company has entered into long-term purchase agreements totaling approximately $4.7 billion in obligations.
• Competition & Pricing: Intense competition and industry consolidation (e.g., Seagate/Maxtor) create pressure on ASPs. Flash memory technology poses a potential competitive threat in lower-capacity segments.
• Manufacturing Concentration: Significant manufacturing operations are concentrated in Malaysia and Thailand, exposing the company to localized risks such as natural disasters or pandemics.

Investor Verification Checklist

• Stock Option Accounting: Verify the status of the independent investigation into historical stock option grants and the potential financial impact of pending derivative lawsuits.
• Deferred Tax Assets: Confirm the realization of deferred tax assets, which contributed a $22 million benefit in 2006, and assess the sustainability of the valuation allowance reduction.
• Customer Concentration: Monitor sales to major OEMs, specifically Dell, which accounted for 12% of revenue in 2006 (down from 16% in 2005).
• Component Supply: Review the status of long-term purchase agreements with media suppliers (Komag, Showa Denko) and the impact of potential component shortages on production.
• Non-Desktop Growth: Validate the sustainability of revenue growth in mobile and CE markets, which now comprise nearly 30% of total revenue.