8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 28, 2016

Western Digital Corporation

(Exact Name of Registrant as Specified in its Charter)

Delaware	001-08703	33-0956711
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)
3355 Michelson Drive, Suite 100 Irvine, California		92612
(Address of principal executive offices)		(Zip Code)

(949) 672-7000

(Registrant’s Telephone Number, Including Area Code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

x Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 2.02 Results of Operations and Financial Condition.

On April 28, 2016, Western Digital Corporation (“Western Digital”) announced financial results for the third fiscal quarter ended April 1, 2016. A copy of the press release making this announcement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. A copy of Western Digital’s Quarterly Fact Sheet for the third fiscal quarter ended April 1, 2016 is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

In accordance with General Instruction B.2 of Form 8-K, the information in this Item 2.02, including Exhibit 99.1 and Exhibit 99.2, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

99.1	Press Release issued by Western Digital Corporation on April 28, 2016 announcing financial results for the third fiscal quarter ended April 1, 2016.
99.2	Third Quarter Fiscal Year 2016 Western Digital Corporation Quarterly Fact Sheet.

2

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Western Digital Corporation
		(Registrant)
	By:	/s/ Michael C. Ray
Date: April 28, 2016		Michael C. Ray
		Executive Vice President, Chief Legal Officer and Secretary

EX-99.1

Exhibit 99.1

Company contacts:

Bob Blair

Western Digital Investor Relations

949.672.7834

robert.blair@wdc.com

Steve Shattuck

Western Digital Public Relations

949.672.7817

steve.shattuck@wdc.com

FOR IMMEDIATE RELEASE:

WESTERN DIGITAL ANNOUNCES FINANCIAL RESULTS FOR

THIRD FISCAL QUARTER 2016

IRVINE, Calif. — April 28, 2016 — Western Digital^® Corp. (NASDAQ: WDC) today reported revenue of $2.8 billion and net income of $74 million, or $0.32 per share, for its third fiscal quarter ended Apr. 1, 2016. On a non-GAAP basis, net income was $283 million, or $1.21 per share. In the year-ago quarter, the company reported revenue of $3.5 billion and net income of $384 million, or $1.63 per share. Non-GAAP net income in the year-ago quarter was $441 million, or $1.87 per share.

The company generated $485 million in cash from operations during the third fiscal quarter, ending with total cash and cash equivalents of $5.9 billion. On Feb. 10, 2016, the company declared a cash dividend of $0.50 per share of its common stock, which was paid on Apr. 15, 2016.

“We continue to manage our business effectively in a dynamic storage demand environment,” said Steve Milligan, chief executive officer. “Computer usage continues to shift from PCs to mobile devices and enterprise workloads are moving increasingly to cloud-based architectures. Our strategy to become a broad-based provider of media-agnostic storage solutions anticipates these and other trends. After we complete the acquisition of SanDisk, we will be better positioned to address and capitalize on these changes and opportunities, with the storage industry’s broadest set of products, a rich technology portfolio, and an experienced team in both rotating magnetic and non-volatile memory.”

Western Digital Announces Financial Results for Third Quarter Fiscal 2016

Page 2

The company indicated that it continues to expect to complete its planned acquisition of SanDisk in the June quarter.

The investment community conference call to discuss these results will be broadcast live over the Internet today at 2 p.m. Pacific/5 p.m. Eastern. The live and archived conference call/webcast can be accessed online at investor.wdc.com. A quarterly fact sheet including our guidance for the fourth fiscal quarter 2016 will also be posted on the same website. The telephone replay number is 1-855-859-2056 in the U.S. or +1-404-537-3406 with passcode 8888801675 for international callers.

About Western Digital

Founded in 1970, Western Digital Corp. (NASDAQ: WDC), Irvine, Calif., is an industry-leading developer and manufacturer of storage solutions that enable people to create, manage, experience and preserve digital content. Western Digital Corporation (“Western Digital”) is responding to changing market needs by providing a full portfolio of compelling, high-quality storage products with effective technology deployment, high efficiency, flexibility and speed. Its products are marketed under the HGST and WD brands to OEMs, distributors, resellers, cloud infrastructure providers and consumers. Financial and investor information is available on the company’s Investor Relations website at investor.wdc.com.

Forward-Looking Statements

This document contains forward-looking statements within the meaning of the federal securities laws. These forward-looking statements include, but are not limited to, statements regarding the proposed acquisition of SanDisk Corporation (“SanDisk”) (including financing of the proposed transaction and the benefits, results, effects and timing of a transaction), all statements regarding Western Digital’s (and Western Digital’s and SanDisk’s combined) expected future financial position, results of operations, cash flows, dividends, financing plans, business strategy,

Western Digital Announces Financial Results for Third Quarter Fiscal 2016

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budgets, capital expenditures, competitive positions, growth opportunities, plans and objectives of management, and statements containing the use of forward-looking words, such as “may,” “will,” “could,” “would,” “should,” “project,” “believe,” “anticipate,” “expect,” “estimate,” “continue,” “potential,” “plan,” “forecast,” “approximate,” “intend,” “upside,” and the like, or the use of future tense. Statements contained herein concerning the business outlook or future economic performance, anticipated profitability, revenues, expenses, dividends or other financial items, and product or services line growth of Western Digital (and the combined businesses of Western Digital and SanDisk), together with other statements that are not historical facts, are forward-looking statements that are estimates reflecting the best judgment of Western Digital based upon currently available information. Statements concerning current conditions may also be forward-looking if they imply a continuation of current conditions.

Such forward-looking statements are inherently uncertain, and shareholders and other potential investors must recognize that actual results may differ materially from Western Digital’s expectations as a result of a variety of factors, including, without limitation, those discussed below. These forward-looking statements are based upon management’s current expectations and include known and unknown risks, uncertainties and other factors, many of which Western Digital is unable to predict or control, that may cause actual results, performance or plans to differ materially from those expressed or implied by such forward-looking statements, including: volatility in global economic conditions; business conditions and growth in the storage ecosystem; pricing trends and fluctuations in average selling prices; the availability and cost of commodity materials and specialized product components; actions by competitors; unexpected advances in competing technologies; the development and introduction of products based on new technologies and expansion into new data storage markets; and other risks and uncertainties listed in the company’s filings with the Securities and Exchange Commission (the “SEC”), including Western Digital’s most recent Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K. You should not place undue reliance on these forward-looking statements, which speak only as of the date hereof, and Western Digital undertakes no obligation to update these forward-looking statements to reflect new information or events.

Western Digital Announces Financial Results for Third Quarter Fiscal 2016

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This document contains financial measures defined as non-GAAP by the SEC. We believe that certain non-GAAP financial measures, when presented in conjunction with comparable GAAP (Generally Accepted Accounting Principles) measures, are useful because that information is an appropriate measure for evaluating our operating performance. Non-GAAP information is used to evaluate business performance and management’s effectiveness. These measures should be considered in addition to, not as a substitute for, or superior to, measures of financial performance prepared in accordance with GAAP. Non-GAAP financial measures may not be calculated in the same manner by all companies and therefore may not be comparable.

Risks and uncertainties related to the proposed merger include, but are not limited to, potential adverse reactions or changes to business relationships resulting from the announcement, pendency or completion of the merger, uncertainties as to the timing of the merger, the possibility that the closing conditions to the proposed merger may not be satisfied or waived, including that a governmental entity may prohibit, delay or refuse to grant a necessary approval, adverse effects on Western Digital’s stock price resulting from the announcement or completion of the merger, competitive responses to the announcement or completion of the merger, costs and difficulties related to the integration of SanDisk’s businesses and operations with Western Digital’s businesses and operations, the inability to obtain, or delays in obtaining, cost savings and synergies from the merger, uncertainties as to whether the completion of the merger or any transaction will have the accretive effect on Western Digital’s earnings or cash flows that it expects, unexpected costs, liabilities, charges or expenses resulting from the merger, litigation relating to the merger, the inability to retain key personnel, and any changes in general economic and/or industry-specific conditions. In addition to the factors set forth above, other factors that may affect Western Digital’s or SanDisk’s plans, results or stock price are set forth in Western Digital’s and SanDisk’s respective filings with the SEC, including Western Digital’s and SanDisk’s most recent Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and

Western Digital Announces Financial Results for Third Quarter Fiscal 2016

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Current Reports on Form 8-K and Western Digital’s most recent registration statement on Form S-4 referenced below. Many of these factors are beyond Western Digital’s and SanDisk’s control. Western Digital and SanDisk caution investors that any forward-looking statements made by Western Digital or SanDisk are not guarantees of future performance. Neither Western Digital nor SanDisk intend, or undertake any obligation, to publish revised forward-looking statements to reflect events or circumstances after the date of this document or to reflect the occurrence of unanticipated events.

Important Additional Information and Where to find It

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities. In connection with the proposed merger, Western Digital filed a registration statement on Form S-4 with the SEC on Dec. 11, 2015, as amended by Amendment No. 1, dated Jan. 27, 2016 and by Amendment No. 2, dated Feb. 5, 2016, which was declared effective by the SEC on Feb. 5, 2016, and Western Digital filed the definitive proxy statement/prospectus on Feb. 5, 2016. Western Digital and SanDisk began to mail the definitive joint proxy statement/prospectus to their respective shareholders on Feb. 5, 2016. This material is not a substitute for the joint proxy statement/prospectus or registration statement or for any other document that Western Digital or SanDisk may file with the SEC and send to Western Digital’s and/or SanDisk’s shareholders in connection with the proposed merger. INVESTORS AND SECURITY HOLDERS OF WESTERN DIGITAL AND SANDISK ARE URGED TO READ ALL RELEVANT DOCUMENTS FILED WITH THE SEC, INCLUDING THE JOINT PROXY STATEMENT/PROSPECTUS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. Investors and security holders will be able to obtain copies of the joint proxy statement/prospectus as well as other filings containing information about Western Digital and SanDisk, without charge, at the SEC’s website, http://www.sec.gov. Copies of the documents filed with the SEC by Western Digital will be available free of charge on Western Digital’s website at http://www.wdc.com. Copies of the documents filed with the SEC by SanDisk will be available free of charge on SanDisk’s website at http://www.sandisk.com.

Western Digital Announces Financial Results for Third Quarter Fiscal 2016

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###

Western Digital, WD and the WD logo are registered trademarks in the U.S. and other countries. HGST trademarks are intended and authorized for use only in countries and jurisdictions in which HGST has obtained the rights to use, market and advertise the brand. Other marks may be mentioned herein that belong to other companies.

WESTERN DIGITAL CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(in millions; unaudited)

	Apr. 1, 2016		July 3, 2015
ASSETS
Current assets:
Cash and cash equivalents	$	5,887	$	5,024
Short-term investments		146		262
Accounts receivable, net		1,254		1,532
Inventories		1,227		1,368
Other current assets		226		331
Total current assets		8,740		8,517
Property, plant and equipment, net		2,687		2,965
Goodwill		2,766		2,766
Other intangible assets, net		268		332
Other non-current assets		486		601
Total assets	$	14,947	$	15,181
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	1,571	$	1,881
Accrued expenses		579		470
Accrued compensation		282		330
Accrued warranty		146		150
Revolving credit facility		—		255
Current portion of long-term debt		203		156
Total current liabilities		2,781		3,242
Long-term debt		2,000		2,156
Other liabilities		557		564
Total liabilities		5,338		5,962
Total shareholders’ equity		9,609		9,219
Total liabilities and shareholders’ equity	$	14,947	$	15,181

WESTERN DIGITAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(in millions, except per share amounts; unaudited)

	Three Months Ended						Nine Months Ended
	Apr. 1,			Apr. 3,			Apr. 1,			Apr. 3,
	2016			2015			2016			2015
Revenue, net	$	2,822		$	3,550		$	9,499		$	11,381
Cost of revenue		2,069			2,518			6,885			8,090
Gross profit		753			1,032			2,614			3,291
Operating expenses:
Research and development		359			402			1,133			1,265
Selling, general and administrative		166			199			565			583
Charges related to arbitration award		—			—			32			15
Employee termination, asset impairment and other charges		140			10			223			72
Total operating expenses		665			611			1,953			1,935
Operating income		88			421			661			1,356
Net interest and other		(8	)		(9	)		(23	)		(26	)
Income before income taxes		80			412			638			1,330
Income tax expense		6			28			30			85
Net income	$	74		$	384		$	608		$	1,245
Income per common share:
Basic	$	0.32		$	1.66		$	2.62		$	5.34
Diluted	$	0.32		$	1.63		$	2.60		$	5.23
Weighted average shares outstanding:
Basic		233			231			232			233
Diluted		234			236			234			238

WESTERN DIGITAL CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions; unaudited)

	Three Months Ended						Nine Months Ended
	Apr. 1,			Apr. 3,			Apr. 1,			Apr. 3,
	2016			2015			2016			2015
Operating Activities
Net income	$	74		$	384		$	608		$	1,245
Adjustments to reconcile net income to net cash provided by operations:
Depreciation and amortization		246			285			734			864
Stock-based compensation		42			37			121			117
Deferred income taxes		(32	)		(22	)		(17	)		9
Gain from insurance recovery		—			—			—			(37	)
Loss on disposal of assets		7			2			13			14
Non-cash portion of employee termination, asset impairment and other charges		18			(7	)		36			12
Changes in operating assets and liabilities, net		130			5			133			(470	)
Net cash provided by operating activities		485			684			1,628			1,754
Investing Activities
Purchases of property, plant and equipment		(133	)		(150	)		(433	)		(456	)
Acquisitions, net of cash acquired		—			(241	)		—			(247	)
Purchases of investments		(54	)		(92	)		(462	)		(687	)
Proceeds from sales and maturities of investments		641			35			907			665
Proceeds from sale of property, plant and equipment		—			—			—			7
Other investing activities, net		(11	)		(10	)		(23	)		6
Net cash provided by (used in) investing activities		443			(458	)		(11	)		(712	)
Financing Activities
Employee stock plans, net		14			48			17			112
Repurchases of common stock		—			(240	)		(60	)		(772	)
Dividends paid to shareholders		(116	)		(93	)		(347	)		(280	)
Repayment of debt		(302	)		(31	)		(364	)		(94	)
Net cash used in financing activities		(404	)		(316	)		(754	)		(1,034	)
Net increase (decrease) in cash and cash equivalents		524			(90	)		863			8
Cash and cash equivalents, beginning of period		5,363			4,902			5,024			4,804
Cash and cash equivalents, end of period	$	5,887		$	4,812		$	5,887		$	4,812

WESTERN DIGITAL CORPORATION

GAAP TO NON-GAAP RECONCILIATION

(in millions, except per share amounts; unaudited)

	Three Months Ended					Nine Months Ended
	Apr. 1,			Apr. 3,		Apr. 1,			Apr. 3,
	2016			2015		2016			2015
GAAP net income	$	74		$	384	$	608		$	1,245
Non-GAAP adjustments:
Amortization of acquired intangible assets		22			44		71			135
Employee termination, asset impairment and other charges		140			10		223			72
Charges related to cost saving initiatives		49			—		86			—
Charges related to arbitration award		—			—		32			15
Acquisition-related charges		16			3		43			3
Insurance recoveries		—			—		—			(37	)
Other charges		2			—		8			51
Income tax adjustments		(20	)		—		(48	)		—
Non-GAAP net income	$	283		$	441	$	1,023		$	1,484
Diluted net income per common share:
GAAP	$	0.32		$	1.63	$	2.60		$	5.23
Non-GAAP	$	1.21		$	1.87	$	4.37		$	6.24
Weighted average shares outstanding:
Diluted		234			236		234			238

To supplement the condensed consolidated financial statements presented in accordance with U.S. generally accepted accounting principles (“GAAP”), the table above sets forth Non-GAAP net income and Non-GAAP diluted net income per common share (“Non-GAAP measures”). These Non-GAAP measures are not in accordance with, or an alternative for, measures prepared in accordance with GAAP and may be different from Non-GAAP measures used by other companies. Western Digital Corporation believes the presentation of Non-GAAP measures, when shown in conjunction with the corresponding GAAP measures, provides useful information to investors for measuring the Company’s earnings performance and comparing it against prior periods.

These Non-GAAP measures exclude amortization of acquired intangible assets; employee termination, asset impairment and other charges; charges related to cost saving initiatives; charges related to arbitration award; acquisition-related charges; insurance recoveries; other charges; and income tax adjustments. We exclude these items for purposes of calculating these Non-GAAP measures to facilitate a more meaningful evaluation of our current operating performance and comparisons to our operating performance in prior periods.

As described above, we exclude the following items from our Non-GAAP measures:

Amortization of acquired intangible assets. We incur expenses from the amortization of acquired intangible assets over their economic lives. Such charges are significantly impacted by the timing and magnitude of our acquisitions and any related impairment charges.

Employee termination, asset impairment and other charges. From time-to-time, in order to realign our operations with anticipated market demand or to achieve cost synergies from the integration of acquisitions, we may terminate employees and/or restructure our operations. From time-to-time, we may also incur charges from the impairment of intangible assets and other long-lived assets. These charges (including any reversals of charges recorded in prior periods) are inconsistent in amount and frequency and are not a part of the ongoing operation of our business. 

Charges related to cost saving initiatives. In connection with the transformation of our business, starting in the 2nd quarter of fiscal 2016, we incur charges related to cost saving initiatives which do not qualify for special accounting treatment as exit or disposal activities. These charges, which are not part of the ongoing operation of our business, primarily relate to costs associated with rationalizing our channel partners or vendors, transforming our information systems infrastructure, integrating our product roadmap, and accelerated depreciation on assets.

Charges related to arbitration award. In relation to an arbitration award for claims brought against the Company by Seagate Technology LLC, which was satisfied in October 2014, and the related dispute over the calculation of post-award interest, we have recorded loss contingencies. The resulting expense is inconsistent in amount and frequency.

Acquisition-related charges. In connection with our business combinations, we incur expenses which we would not have otherwise incurred as part of our business operations. These expenses include third-party professional service and legal fees, third-party integration services, severance costs, non-cash adjustments to the fair value of acquired inventory, contract termination costs, retention bonuses, and changes to the fair value of contingent consideration. We may also experience other one-time accounting impacts in connection with these transactions. These charges and impacts are related to acquisitions, are inconsistent in amount and frequency, and have no direct correlation to the operation of our business.

Insurance recoveries. From time-to-time, we receive insurance recoveries related to losses or other events which occurred in a prior period. Such recoveries are inconsistent in amount and frequency.

Other charges. From time-to-time, we sell investments or other assets which are not considered strategic or necessary to our business; are a party to legal or arbitration proceedings, which could result in an expense or benefit due to settlements, final judgments, or accruals for loss contingencies; or incur other charges or gains which are not a part of the ongoing operation of our business. The resulting expense or benefit is inconsistent in amount and frequency.

Income tax adjustments. Income tax adjustments reflect the difference between income taxes based on a forecasted annual non-GAAP tax rate and a forecasted annual GAAP tax rate as a result of the timing of certain non-GAAP pre-tax adjustments.

EX-99.2

Exhibit 99.2

Amounts in millions, except per share amounts, ASP, percentages	Q4 FY12			Q1 FY13			Q2 FY13			Q3 FY13			Q4 FY13			Q1 FY14			Q2 FY14			Q3 FY14			Q4 FY14			Q1 FY15			Q2 FY15			Q3 FY15			Q4 FY15			Q1 FY16			Q2 FY16			Q3 FY169			Revenue by Channel R4Q Ending Q3 FY16 Revenue by Geography R4Q Ending Q3 FY16
TAM		156.7			139.1			135.8			135.9			133.3			140.2			142.2			138.1			138.0			147.3			140.8			125.0			111.0			118.7			115.1			99.8
HDD Share		45.3	%		44.9	%		43.6	%		44.3	%		44.9	%		44.7	%		44.4	%		43.8	%		45.7	%		44.0	%		43.4	%		43.6	%		43.7	%		43.6	%		43.2	%		43.2	%
Units (HDD)2		71.0			62.5			59.2			60.2			59.9			62.6			63.1			60.4			63.1			64.7			61.0			54.5			48.5			51.7			49.7			43.1
ASP (HDD)	$	65		$	62		$	62		$	61		$	60		$	58		$	60		$	58		$	56		$	58		$	60		$	61		$	60		$	60		$	61		$	60
Revenue	$	4,754		$	4,035		$	3,824		$	3,764		$	3,728		$	3,804		$	3,972		$	3,703		$	3,651		$	3,943		$	3,888		$	3,550		$	3,191		$	3,360		$	3,317		$	2,822
Gross Profit	$	1,472		$	1,193		$	1,059		$	1,061		$	1,050		$	1,099		$	1,156		$	1,076		$	1,029		$	1,149		$	1,110		$	1,032		$	930		$	955		$	906		$	753
Gross Margin		31.0	%		29.6	%		27.7	%		28.2	%		28.2	%		28.9	%		29.1	%		29.1	%		28.2	%		29.1	%		28.5	%		29.1	%		29.1	%		28.4	%		27.3	%		26.7	%
R&D	$	406		$	396		$	378		$	396		$	402		$	401		$	416		$	418		$	426		$	437		$	426		$	402		$	381		$	385		$	389		$	359
SG&A		178			179			162			185			180			132			226			201			202			220			164			199			190			192			207			166
Other		80			26			41			63			689			24			36			38			49			23			54			10			104			56			59			140
Total Operating Expenses	$	664		$	601		$	581		$	644		$	1,271		$	557		$	678		$	657		$	677		$	680		$	644		$	611		$	675		$	633		$	655		$	665
Operating Income (Loss)	$	808		$	592		$	478		$	417		$	(221	)	$	542		$	478		$	419		$	352		$	469		$	466		$	421		$	255		$	322		$	251		$	88
Net Income (Loss)	$	745		$	519		$	335		$	391		$	(265	)	$	495		$	430		$	375		$	317		$	423		$	438		$	384		$	220		$	283		$	251		$	74
EPS	$	2.87		$	2.06		$	1.36		$	1.60		$	(1.12	)	$	2.05		$	1.77		$	1.55		$	1.32		$	1.76		$	1.84		$	1.63		$	0.94		$	1.21		$	1.07		$	0.32
Diluted Shares Outstanding		260			252			246			245			236			242			243			242			241			240			238			236			235			234			234			234
Non-GAAP Results              Gross Profit10	$	1,511		$	1,231		$	1,097		$	1,099		$	1,085		$	1,135		$	1,196		$	1,115		$	1,078		$	1,188		$	1,187		$	1,069		$	951		$	972		$	944		$	794
Gross Margin10		31.8	%		30.5	%		28.7	%		29.2	%		29.1	%		29.8	%		30.1	%		30.1	%		29.5	%		30.1	%		30.5	%		30.1	%		29.8	%		28.9	%		28.5	%		28.1	%
Operating Expenses10	$	572		$	564		$	529		$	559		$	564		$	574		$	616		$	605		$	598		$	638		$	620		$	591		$	560		$	567		$	542		$	477
Net Income	$	872		$	594		$	513		$	514		$	477		$	514		$	532		$	470		$	445		$	504		$	539		$	441		$	356		$	366		$	374		$	283
EPS6	$	3.35		$	2.36		$	2.09		$	2.10		$	1.96		$	2.12		$	2.19		$	1.94		$	1.85		$	2.10		$	2.26		$	1.87		$	1.51		$	1.56		$	1.60		$	1.21
Revenue By Channel            OEM		69	%		63	%		61	%		60	%		66	%		64	%		62	%		62	%		65	%		63	%		63	%		64	%		67	%		67	%		65	%		66	%
Distributors		21	%		24	%		24	%		26	%		23	%		24	%		24	%		25	%		23	%		24	%		23	%		23	%		21	%		21	%		21	%		22	%
Retail		10	%		13	%		15	%		14	%		11	%		12	%		14	%		13	%		12	%		13	%		14	%		13	%		12	%		12	%		14	%		12	%
Revenue by Geography Americas		27	%		23	%		27	%		27	%		28	%		26	%		25	%		25	%		24	%		27	%		27	%		29	%		32	%		30	%		31	%		30	%
EMEA		18	%		18	%		23	%		22	%		19	%		20	%		23	%		21	%		20	%		21	%		24	%		21	%		21	%		21	%		23	%		23	%
Asia/ANZ		55	%		59	%		50	%		51	%		53	%		54	%		52	%		54	%		56	%		52	%		49	%		50	%		47	%		49	%		46	%		47	%
Top 10 Customers Revenue		53	%		44	%		45	%		45	%		48	%		48	%		42	%		44	%		45	%		45	%		44	%		43	%		44	%		48	%		44	%		45	%
Enterprise SSD Revenue	$	54		$	70		$	89		$	92		$	104		$	106		$	155		$	134		$	113		$	156		$	187		$	224		$	244		$	233		$	270		$	200
Non-PC Revenue12		45	%		46	%		51	%		51	%		52	%		53	%		54	%		53	%		54	%		55	%		58	%		60	%		65	%		66	%		65	%		64	%
PC Units5                        Notebook		32.773			25.887			21.300			21.547			23.989			22.912			22.662			21.814			22.899			23.396			21.178			18.785			15.513			15.804			15.318			13.577
Desktop		21.211			16.819			17.717			18.383			16.185			17.307			16.825			16.635			16.182			16.320			15.375			13.523			11.601			11.683			12.458			10.681
Non-PC Units                Consumer Electronics4		4.155			8.019			6.452			6.517			6.544			8.474			8.794			8.573			10.906			10.485			9.295			8.610			9.056			11.484			8.461			7.318
Branded		4.986			5.767			7.139			6.517			5.281			6.146			7.018			6.272			6.012			6.780			7.156			6.090			5.151			5.575			6.443			5.157
Enterprise		7.913			5.988			6.633			7.211			7.897			7.771			7.783			7.129			7.098			7.763			8.041			7.519			7.199			7.185			7.008			6.390
Total HDD		71.038			62.480			59.241			60.175			59.896			62.610			63.082			60.423			63.097			64.744			61.045			54.527			48.520			51.731			49.688			43.123
Average GB Shipped		668			708			804			805			797			811			874			888			875			1,001			1,088			1,123			1,159			1,228			1,390			1,443
EB Shipped		47.4			44.3			47.6			48.4			47.7			50.8			55.1			53.6			55.2			64.8			66.4			61.3			56.2			63.5			69.1			62.2
R4Q EB Shipped		126.3			133.9			165.1			187.8			188.0			194.5			202.0			207.2			214.7			228.7			240.0			247.7			248.7			247.4			250.1			251.0

Volume and HDD Share2	Revenue and Non-GAAP Gross Margin10	Non-GAAP EPS Analysis

Page 1 WDC Quarterly Fact Sheet – Q3 FY16  

Balance sheet, cash flows, earnings, dividends and share repurchase amounts in millions	Q4 FY12			Q1 FY13			Q2 FY13			Q3 FY13			Q4 FY13			Q1 FY14			Q2 FY14			Q3 FY14			Q4 FY14			Q1 FY15			Q2 FY15			Q3 FY15			Q4 FY15			Q1 FY16			Q2 FY16			Q3 FY16			Business Model (Non-GAAP) Gross Margin* 27%-32% Operating Expense* 10%-12% Operating Income* 15%-22% Tax 7%-10% of Income Before Tax Capital Expenditures* 5%-7% Conversion Cycle 4-8 Days *Percent of Revenue
Cash and Cash Equivalents	$	3,208		$	3,537		$	3,816		$	4,060		$	4,309		$	4,869		$	4,655		$	4,569		$	4,804		$	5,159		$	4,902		$	4,812		$	5,024		$	5,081		$	5,363		$	5,887
Available-for-Sale (AFS) Securities		—			—			—			—			—			—			—			470			499			454			465			523			590			704			732			146
Debt		(2,185	)		(2,128	)		(2,128	)		(2,013	)		(1,955	)		(2,398	)		(2,340	)		(2,469	)		(2,438	)		(2,406	)		(2,375	)		(2,344	)		(2,567	)		(2,536	)		(2,505	)		(2,203	)
Net Cash, Cash Equivalents & AFS Securities	$	1,023		$	1,409		$	1,688		$	2,047		$	2,354		$	2,471		$	2,315		$	2,570		$	2,865		$	3,207		$	2,992		$	2,991		$	3,047		$	3,249		$	3,590		$	3,830
Cash Flow From Operations	$	1,128		$	936		$	772		$	727		$	684		$	680		$	727		$	697		$	713		$	827		$	243		$	684		$	488		$	545		$	598		$	485
Free Cash Flow	$	804		$	554		$	526		$	539		$	548		$	544		$	557		$	536		$	552		$	667		$	97		$	534		$	332		$	394		$	449		$	352
Capital Expenditures	$	324		$	382		$	246		$	188		$	136		$	136		$	170		$	161		$	161		$	160		$	146		$	150		$	156		$	151		$	149		$	133
Depreciation and Amortization	$	339		$	313		$	309		$	309		$	302		$	312		$	317		$	307		$	308		$	289		$	290		$	285		$	250		$	236		$	252		$	246
EBITDA	$	1,147		$	905		$	787		$	726		$	81		$	854		$	795		$	726		$	660		$	758		$	756		$	706		$	505		$	558		$	503		$	334
Accounts Receivable, Net	$	2,364		$	1,951		$	1,732		$	1,700		$	1,793		$	1,791		$	1,959		$	1,802		$	1,989		$	1,915		$	1,880		$	1,696		$	1,532		$	1,616		$	1,650		$	1,254
Inventory         Raw Materials	$	245		$	237		$	193		$	191		$	167		$	208		$	201		$	204		$	168		$	178		$	154		$	173		$	168		$	135		$	130		$	133
Work in Process		552			559			581			583			575			579			581			519			493			509			510			498			500			507			474			440
Finished Goods		413			508			430			423			446			457			511			554			565			585			618			651			700			618			634			654
Total Inventory	$	1,210		$	1,304		$	1,204		$	1,197		$	1,188		$	1,244		$	1,293		$	1,277		$	1,226		$	1,272		$	1,282		$	1,322		$	1,368		$	1,260		$	1,238		$	1,227
Property, Plant and Equipment, Net	$	4,067		$	4,027		$	3,938		$	3,803		$	3,700		$	3,638		$	3,509		$	3,406		$	3,293		$	3,202		$	3,099		$	3,051		$	2,965		$	2,890		$	2,801		$	2,687
Accounts Payable	$	2,773		$	2,545		$	2,185		$	2,037		$	1,990		$	2,061		$	2,106		$	1,902		$	1,971		$	2,016		$	2,071		$	2,020		$	1,881		$	1,799		$	1,806		$	1,571
Days Sales Outstanding11		45			44			41			41			44			43			45			44			50			48			44			44			44			44			45			40
Days Inventory Outstanding11		34			42			40			40			40			42			42			44			42			45			42			48			55			48			47			54
Days Payables Outstanding11		77			82			72			69			67			69			68			65			68			71			68			73			76			68			68			69
Cash Conversion Cycle11		2			4			9			12			17			16			19			23			24			22			18			19			23			24			24			25
Inventory Turns11		11			9			9			9			9			9			9			8			9			8			9			8			7			8			8			7
Dividends Paid	$	—		$	—		$	121		$	—		$	60		$	59		$	59		$	71		$	70		$	94		$	94		$	93		$	116		$	115		$	116		$	116
Shares Repurchased		16.4			5.2			4.2			5.2			4.4			2.3			2.0			2.8			3.2			2.2			3.2			2.2			2.0			0.7			—			—
Shares Repurchased	$	604		$	218		$	146		$	243		$	235		$	150		$	150		$	244		$	272		$	223		$	309		$	240		$	198		$	60		$	—		$	—
Remaining Amount Authorized	$	1,312		$	2,594		$	2,448		$	2,205		$	1,970		$	1,820		$	1,670		$	1,426		$	1,154		$	931		$	622		$	2,382		$	2,184		$	2,124		$	2,124		$	2,124
R4Q Economic Profit8	$	542		$	801		$	976		$	884		$	(59	)	$	(176	)	$	(109	)	$	(158	)	$	415		$	332		$	328		$	320		$	203		$	52		$	(157	)	$	(440	)
R4Q ROIC8		20.4	%		21.3	%		21.0	%		20.0	%		10.1	%		9.7	%		10.5	%		10.2	%		15.1	%		14.2	%		14.1	%		14.1	%		13.1	%		11.7	%		10.0	%		7.4	%
R4Q ROA8		14.3	%		14.9	%		14.7	%		14.2	%		7.0	%		6.7	%		7.2	%		7.0	%		10.6	%		10.0	%		10.1	%		10.2	%		9.6	%		8.7	%		7.5	%		5.4	%
Worldwide Headcount3		103,111			96,002			93,820			87,565			85,777			87,586			87,976			84,556			84,072			83,277			83,993			80,767			76,449			76,052			74,891			67,884

Gross vs. Net Cash, Cash Equivalents & AFS Securities	R&D10 and Capital Expenditures	Free Cash Flow	R4Q ROIC & R4Q Economic Profit8

Page 2 WDC Quarterly Fact Sheet – Q3 FY16  

Non-GAAP Financial Measures

Free Cash Flow: Free cash flow is a non-GAAP financial measure defined as cash flows from operations less capital expenditures. We consider free cash flow to be useful as an indicator of our overall liquidity, as the amount of free cash flow generated in any period is representative of cash that is available for strategic opportunities including, among others, investing in the Company’s business, making strategic acquisitions, strengthening the balance sheet, repaying debt, paying dividends and repurchasing stock. Free cash flow should not be construed as an alternative to cash flows from operations or other cash flow measurements determined in accordance with GAAP.

EBITDA: EBITDA is a non-GAAP financial measure defined as net income before interest, income tax expense, depreciation and amortization. We include information concerning EBITDA because we believe it is a useful measure to evaluate our operating performance. As a measure of our operating performance, we believe EBITDA provides a measure of operating results unaffected by differences in capital structures, capital investment cycles and ages of related assets among otherwise comparable companies. While EBITDA is a relevant and widely used measure of operating performance, it does not represent net income as defined by GAAP and it should not be considered as an alternative to that measure in evaluating operating performance.

Non-GAAP Gross Margin and Non-GAAP Gross Profit: Non-GAAP gross margin is a non-GAAP measure defined as non-GAAP gross profit divided by revenue. Non-GAAP gross profit is a non-GAAP measure defined as gross profit before any charges to cost of goods sold that may not be indicative of ongoing operations. We believe that non-GAAP gross profit is a useful measure to investors as an alternative method for measuring our operating performance and comparing it against prior periods’ performance.

Non-GAAP Operating Expenses: Non-GAAP operating expenses is a non-GAAP measure defined as operating expenses before any charges that may not be indicative of ongoing operations. We believe that non-GAAP operating expenses is a useful measure to investors as an alternative method for measuring our expense management and comparing it against prior periods’ performance.

Non-GAAP Net Income and Non-GAAP EPS: Non-GAAP net income and non-GAAP EPS are non-GAAP measures defined as net income and EPS, respectively, before any charges that may not be indicative of ongoing operations, or any tax impact related to those charges. We believe that non-GAAP net income and non-GAAP EPS are useful measures to investors as an alternative method for measuring our earnings performance and comparing it against prior periods’ performance.

Non-GAAP income tax provision as a percentage of non-GAAP pre-tax income: Non-GAAP income tax provision is a non-GAAP measure defined as income tax provision plus any income tax adjustments that may not be indicative of ongoing operations. We believe that non-GAAP income tax provision as a percentage of non-GAAP pre-tax income is a useful measure to investors as an alternative method for measuring our effective tax rate and comparing it against prior periods’ performance.

In millions, except gross margin and per share amounts	Q4 FY12			Q1 FY13			Q2 FY13			Q3 FY13			Q4 FY13			Q1 FY14			Q2 FY14			Q3 FY14			Q4 FY14			Q1 FY15			Q2 FY15			Q3 FY15			Q4 FY15			Q1 FY16			Q2 FY16			Q3 FY16
Reconciliation of Cash Flows from Operations to Free Cash Flow
Cash Flows from Operations	$	1,128		$	936		$	772		$	727		$	684		$	680		$	727		$	697		$	713		$	827		$	243		$	684		$	488		$	545		$	598		$	485
Capital Expenditures		(324	)		(382	)		(246	)		(188	)		(136	)		(136	)		(170	)		(161	)		(161	)		(160	)		(146	)		(150	)		(156	)		(151	)		(149	)		(133	)
Free Cash Flow	$	804		$	554		$	526		$	539		$	548		$	544		$	557		$	536		$	552		$	667		$	97		$	534		$	332		$	394		$	449		$	352
Reconciliation of Net Income to EBITDA
Net Income (Loss)	$	745		$	519		$	335		$	391		$	(265	)	$	495		$	430		$	375		$	317		$	423		$	438		$	384		$	220		$	283		$	251		$	74
Interest		7			14			10			11			9			10			11			13			5			9			8			9			8			8			7			8
Income Tax Provision		56			59			133			15			35			37			37			31			30			37			20			28			27			31			(7	)		6
Depreciation and Amortization		339			313			309			309			302			312			317			307			308			289			290			285			250			236			252			246
EBITDA	$	1,147		$	905		$	787		$	726		$	81		$	854		$	795		$	726		$	660		$	758		$	756		$	706		$	505		$	558		$	503		$	334
Reconciliation of Gross Margin to Non-GAAP Gross Margin & Gross Profit to Non-GAAP Gross Profit
Gross Profit10	$	1,472		$	1,193		$	1,059		$	1,061		$	1,050		$	1,099		$	1,156		$	1,076		$	1,029		$	1,149		$	1,110		$	1,032		$	930		$	955		$	906		$	753
Acquisition-related charges		—			—			—			—			—			—			—			—			—			—			—			—			—			—			—			—
Charges related to cost saving initiatives		—			—			—			—			—			—			—			—			—			—			—			—			—			—			22			25
Other charges		—			—			—			—			—			—			—			—			10			—			39			—			1			—			—			—
Amortization of acquired intangible assets		39			38			38			38			35			36			40			39			39			39			38			37			20			17			16			16
Non-GAAP Gross Profit10	$	1,511		$	1,231		$	1,097		$	1,099		$	1,085		$	1,135		$	1,196		$	1,115		$	1,078		$	1,188		$	1,187		$	1,069		$	951		$	972		$	944		$	794
Revenue	$	4,754		$	4,035		$	3,824		$	3,764		$	3,728		$	3,804		$	3,972		$	3,703		$	3,651		$	3,943		$	3,888		$	3,550		$	3,191		$	3,360		$	3,317		$	2,822
Gross Margin10		31.0	%		29.6	%		27.7	%		28.2	%		28.2	%		28.9	%		29.1	%		29.1	%		28.2	%		29.1	%		28.5	%		29.1	%		29.1	%		28.4	%		27.3	%		26.7	%
Non-GAAP Gross Margin10		31.8	%		30.5	%		28.7	%		29.2	%		29.1	%		29.8	%		30.1	%		30.1	%		29.5	%		30.1	%		30.5	%		30.1	%		29.8	%		28.9	%		28.5	%		28.1	%
Reconciliation of Operating Expenses to Non-GAAP Operating Expenses
Total Operating Expenses	$	664		$	601		$	581		$	644		$	1,271		$	557		$	678		$	657		$	677		$	680		$	644		$	611		$	675		$	633		$	655		$	665
Less:
Amortization of acquired intangible assets		(12	)		(11	)		(11	)		(11	)		(11	)		(11	)		(11	)		(11	)		(8	)		(7	)		(7	)		(7	)		(8	)		(8	)		(8	)		(6	)
Employee termination, asset impairment and other charges		(80	)		(26	)		(41	)		(63	)		(8	)		(11	)		(23	)		(25	)		(26	)		(9	)		(36	)		(10	)		(104	)		(56	)		(27	)		(140	)
Charges related to cost saving initiatives		—			—			—			—			—			—			—			—			—			—			—			—			—			—			(15	)		(24	)
Charges related to arbitration award		—			—			—			—			(681	)		(13	)		(13	)		(13	)		(13	)		(14	)		(1	)		—			—			—			(32	)		—
Acquisition-related charges		—			—			—			—			(7	)		(13	)		—			—			—			—			—			(3	)		—			—			(27	)		(16	)
Charges and insurance recoveries related to flooding, net		—			—			—			—			—			65			—			—			—			—			37			—			—			—			—			—
Other charges		—			—			—			(11	)		—			—			(15	)		(3	)		(32	)		(12	)		(17	)		—			(3	)		(2	)		(4	)		(2	)
Non-GAAP Operating Expenses	$	572		$	564		$	529		$	559		$	564		$	574		$	616		$	605		$	598		$	638		$	620		$	591		$	560		$	567		$	542		$	477
Reconciliation of Net Income (Loss) to Non-GAAP Net Income
Net Income (Loss)	$	745		$	519		$	335		$	391		$	(265	)	$	495		$	430		$	375		$	317		$	423		$	438		$	384		$	220		$	283		$	251		$	74
Amortization of acquired intangible assets		51			49			49			49			46			47			51			50			47			46			45			44			28			25			24			22
Employee termination, asset impairment and other charges		80			26			41			63			8			11			23			25			36			9			53			10			104			56			27			140
Charges related to cost saving initiatives		—			—			—			—			—			—			—			—			—			—			—			—			—			—			37			49
Charges related to arbitration award		—			—			—			—			681			13			13			13			13			14			1			—			—			—			32			—
Acquisition-related charges		—			—			—			—			7			13			—			—			—			—			—			3			—			—			27			16
Charges and insurance recoveries related to flooding, net		—			—			—			—			—			(65	)		—			—			—			—			(37	)		—			—			—			—			—
Other charges		—			—			—			11			—			—			15			7			32			12			39			—			4			2			4			2
Income tax adjustments		(4	)		—			88			—			—			—			—			—			—			—			—			—			—			—			(28	)		(20	)
Non-GAAP Net Income	$	872		$	594		$	513		$	514		$	477		$	514		$	532		$	470		$	445		$	504		$	539		$	441		$	356		$	366		$	374		$	283
EPS	$	2.87		$	2.06		$	1.36		$	1.60		$	(1.12	)	$	2.05		$	1.77		$	1.55		$	1.32		$	1.76		$	1.84		$	1.63		$	0.94		$	1.21		$	1.07		$	0.32
Non-GAAP EPS	$	3.35		$	2.36		$	2.09		$	2.10		$	1.96		$	2.12		$	2.19		$	1.94		$	1.85		$	2.10		$	2.26		$	1.87		$	1.51		$	1.56		$	1.60		$	1.21
Diluted Shares Outstanding		260			252			246			245			236			242			243			242			241			240			238			236			235			234			234			234
Non-GAAP Diluted Shares Outstanding6		260			252			246			245			243			242			243			242			241			240			238			236			235			234			234			234
Reconciliation of Income Tax Provision as a percentage of pre-tax income to Non-GAAP income tax provision as a percentage of non-GAAP pre-tax income
Net income (loss)	$	745		$	519		$	335		$	391		$	(265	)	$	495		$	430		$	375		$	317		$	423		$	438		$	384		$	220		$	283		$	251		$	74
Income tax provision		56			59			133			15			35			37			37			31			30			37			20			28			27			31			(7	)		6
Pre-tax income	$	801		$	578		$	468		$	406		$	(230	)	$	532		$	467		$	406		$	347		$	460		$	458		$	412		$	247		$	314		$	244		$	80
Income tax provision as a percentage of pre-tax income		7	%		10	%		28	%		4	%		-15	%		7	%		8	%		8	%		9	%		8	%		4	%		7	%		11	%		10	%		-3	%		8	%
Non-GAAP Net Income	$	872		$	594		$	513		$	514		$	477		$	514		$	532		$	470		$	445		$	504		$	539		$	441		$	356		$	366		$	374		$	283
Add:
Income tax provision		56			59			133			15			35			37			37			31			30			37			20			28			27			31			(7	)		6
Income tax adjustments		4			—			(88	)		—			—			—			—			—			—			—			—			—			—			—			28			20
Non-GAAP income tax provision		60			59			45			15			35			37			37			31			30			37			20			28			27			31			21			26
Non-GAAP pre-tax income	$	932		$	653		$	558		$	529		$	512		$	551		$	569		$	501		$	475		$	541		$	559		$	469		$	383		$	397		$	395		$	309
Non-GAAP income tax provision as a percentage of pre-tax income		6	%		9	%		8	%		3	%		7	%		7	%		7	%		6	%		6	%		7	%		4	%		6	%		7	%		8	%		5	%		8	%

Page 3 WDC Quarterly Fact Sheet – Q3 FY16  

Non-GAAP Financial Measures

Economic Profit: Economic profit (EP) is a non-GAAP financial measure defined as net operating profit after taxes less the value of invested capital multiplied by the weighted average cost of capital, where net operating profit after taxes is defined as income from operations minus tax expense and invested capital is defined as the sum of current debt, long-term debt and equity. Management uses EP to evaluate business performance and allocate resources, and it is a component in determining management’s incentive compensation. Management believes EP provides additional perspective to investors about financial returns generated by the business and represents profit generated over and above the cost of capital used by the business to generate that profit.

In millions	Q1 FY12			Q2 FY12			Q3 FY12			Q4 FY12			Q1 FY13			Q2 FY13			Q3 FY13			Q4 FY13			Q1 FY14			Q2 FY14			Q3 FY14			Q4 FY14			Q1 FY15			Q2 FY15			Q3 FY15			Q4 FY15			Q1 FY16			Q2 FY16			Q3 FY16
Reconciliation of Operating Income (Loss) to R4Q Economic Profit
Operating Income (Loss)	$	259		$	162		$	542		$	808		$	592		$	478		$	417		$	(221	)	$	542		$	478		$	419		$	352		$	469		$	466		$	421		$	255		$	322		$	251		$	88
Income Tax Provision		(19	)		(15	)		(55	)		(56	)		(59	)		(133	)		(15	)		(35	)		(37	)		(37	)		(31	)		(30	)		(37	)		(20	)		(28	)		(27	)		(31	)		7			(6	)
Net Operating Profit After Taxes		240			147			487			752			533			345			402			(256	)		505			441			388			322			432			446			393			228			291			258			82
R4Q Net Operating Profit After Taxes		771			692			1,034			1,626			1,919			2,117			2,032			1,024			996			1,092			1,078			1,656			1,583			1,588			1,593			1,499			1,358			1,170			859
Invested Capital x WACC		(658	)		(677	)		(1,117	)		(1,084	)		(1,118	)		(1,141	)		(1,148	)		(1,083	)		(1,172	)		(1,201	)		(1,236	)		(1,241	)		(1,251	)		(1,260	)		(1,273	)		(1,296	)		(1,306	)		(1,327	)		(1,299	)
R4Q Economic Profit	$	113		$	15		$	(83	)	$	542		$	801		$	976		$	884		$	(59	)	$	(176	)	$	(109	)	$	(158	)	$	415		$	332		$	328		$	320		$	203		$	52		$	(157	)	$	(440	)

Formulas

Share = Units (HDD) / TAM

ASP = Revenue / Units (HDD)

Free Cash Flow = Cash Flow from Operations – Capital Expenditures

EBITDA = Net Income (Loss) + Interest + Income Tax Expense + Depreciation and Amortization

Days Sales Outstanding (DSO) = Accounts Receivable / (Revenue / 91 days)

Days Inventory Outstanding (DIO) = Inventory / (Cost of Revenue / 91 days)

Days Payables Outstanding (DPO) = Accounts Payable / (Cost of Revenue / 91 days)

Cash Conversion Cycle = DSO + DIO – DPO

Inventory Turns = 364 days / DIO

R4Q Economic Profit = R4Q Net Operating Profit After Taxes – (Invested Capital x WACC)

• Invested Capital = Short-term debt + Current portion of long-term debt + Long-term debt + Total shareholders’ equity

• WACC⁷ = 11%

R4Q ROIC = R4Q (Net Income (Loss) + Interest Expense) / R4Q Average (Short-term debt + Current portion of long-term debt + Long-term debt + Total shareholders’ equity)

R4Q ROA = R4Q Net Income (Loss) / R4Q Average Total Assets

Footnotes

1. ASP, Revenue by Channel and Revenue by Geography exclude external sales of media/substrates.

2. Unit volume excludes WD TV Media Players without hard drives, WD Livewire, SSD and media.

3. Worldwide Headcount excludes temporary and contracted employees.

4. Consumer Electronics includes gaming.

5. PC includes shipments to distributors, second/third tier external HDD manufacturers, and white box manufacturers.

6. Q4 FY13 non-GAAP EPS is calculated using the same number of shares used for Q4 FY13 GAAP EPS plus 7 million dilutive shares. Dilutive shares are not included in the Q4 FY13 GAAP EPS calculation as Q4 FY13 resulted in a net loss.

7. WACC of 11% is an internal assumption.

8. Q2 FY12 includes charges related to the flooding. Q4 FY13 includes charges related to the arbitration award.

9. TAM is preliminary and based on internal information.

10. Certain FY14 prior quarter amounts have been reclassified from gross profit, R&D and SG&A to the other charges line within operating expenses to conform to the annual presentation of FY14 in Part II, Item 8, Note18 in the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K.

11. Q1 FY15 cash conversion cycle calculated using 98 days due to a 14 week quarter. Q1 FY15 inventory turns calculated using 371 days due to a 53 week year.

12. Non-PC revenue percentage includes consumer electronics, enterprise applications, branded products, and SSD.

Page 4 WDC Quarterly Fact Sheet – Q3 FY16