Corporate Executive Officers - Biographies

Stephen D. Milligan

Chief Executive Officer
Western Digital Corporation

Steve Milligan re-joined Western Digital as president in March 2012 and was appointed chief executive officer effective January 2, 2013.

Immediately prior to returning to Western Digital, Milligan was president and chief executive officer of Hitachi Global Storage Technologies (Hitachi GST). During his tenure, Milligan led Hitachi GST through a financial and operational turnaround culminating in Western Digital's acquisition of Hitachi GST in March 2012.

Prior to joining Hitachi GST in 2007, Milligan was Western Digital's senior vice president and chief financial officer. He originally joined Western Digital in 2002 as vice president, finance.

Milligan previously was with Dell and Price Waterhouse. He traces his computer industry knowledge to Dell and his hard disk drive roots to his 12 years at Price Waterhouse, where his responsibilities included auditing IBM's hard disk drive business.

Milligan serves on the board of directors of Ross Stores, Inc.

Steve Milligan holds a bachelor's degree in accounting from the Ohio State University.

Michael D. Cordano

President and Chief Operating Officer
Western Digital Corporation

In October 2015, Mike Cordano became president and chief operating officer of Western Digital. Prior to that, Cordano served as president of HGST, a Western Digital Corporation company.

A 20-year veteran of the storage industry, Cordano previously was executive vice president of Sales and Marketing and president of Branded Business for HGST, where he led the external storage business in addition to the company's worldwide sales and marketing organizations. In this capacity, Cordano played a key role in architecting HGST's corporate strategy and executing its successful financial turn-around. Western Digital acquired HGST in March 2012.

Prior to HGST, Cordano was CEO and co-founder of Fabrik, Inc., a leading provider of portable and external storage solutions, including the award-winning G-Technology and SimpleTech product lines. Fabrik, financed by top venture capital firms, including Intel Capital, was acquired by HGST in April 2009.

Before co-founding Fabrik, Cordano was executive vice president of Worldwide Sales and Marketing for Maxtor Corporation. At Maxtor he formed and managed the Branded Products Business Unit, creating break-through product categories, such as the Maxtor OneTouch external storage and backup solution, which ultimately defined the category.

Cordano’s background also includes several regional and international management assignments. He holds a bachelor's degree in business administration from the University of Colorado.

Mark P. Long

President WD Capital, Chief Strategy Officer and Chief Financial Officer.” 
Western Digital Corporation

Mark Long was appointed as executive vice president, chief financial officer and chief strategy officer effective September 1, 2016, having previously served as executive vice president, finance, and chief strategy officer since July 2016. Prior to that, he served the company as executive vice president and chief strategy officer since February 2013. Long also serves as president, Western Digital Capital, a strategic investment fund targeting innovative companies within the broader storage industry and related markets aligned to Western Digital’s strategic plan. From March 2012 to February 2013, Long served in various consulting capacities for Western Digital.

Prior to Western Digital, Long served as senior vice president, strategy and corporate development at Hitachi GST, which was acquired by Western Digital in March 2012. Previously, he provided merger and acquisition and corporate finance services to a range of technology companies, including Fabrik, Inc., which was acquired by Hitachi GST in April 2009, as managing director of VisionPoint Capital.

Long also was president and chief strategy officer of SageMetrics, a venture-backed business intelligence software company, and executive vice president of Strategic Development for Intraware, a then-publicly held provider of electronic software delivery and management services. Prior to Intraware, he was an investment banker with Credit Suisse First Boston and Deutsche Bank Securities. Long began his career as a corporate lawyer with Gunderson Dettmer, a leading law firm in California’s Silicon Valley.

Long holds a bachelor's degree in philosophy from the University of Arizona and a law degree and a master’s degree in business administration (MBA) from the University of Michigan.

Martin R. Fink

Executive Vice President and
Chief Technology Officer
Western Digital Corporation

Martin Fink joined Western Digital as Executive Vice President and Chief Technology Officer in January 2017. In this role, Fink leads the company’s technology innovation agenda as Western Digital continues to transform its business and expand its capabilities and technology portfolio.

Prior to joining Western Digital, Fink most recently served as Chief Technology Officer, Executive Vice President and Director of Hewlett Packard Labs at Hewlett-Packard Enterprise Company, and served as CTO and EVP of HP, Inc, overseeing HP Labs, the company’s advanced research center.

In his 30-year career at Hewlett-Packard Company and Hewlett-Packard Enterprise Company, Fink worked in a wide range of roles, including General Manager of HP Cloud and Senior Vice President and General Manager of Business Critical Systems and Converged Application Systems.

He has been a board member of Hortonworks, Inc. since July 2014, and a board member of Wild Beer Co., since February 2016.

Fink holds an associate’s degree in electrical and electronics engineering from Loyalist College and an M.B.A. from Colorado State University.

Jacqueline M. DeMaria

Executive Vice President and
Chief Human Resources Officer
Western Digital Corporation

Jacqueline DeMaria was appointed executive vice president and chief human resources officer in November 2015. DeMaria joined Western Digital in July 2005 and previously served the company as senior vice president, global human resources and vice president, human resources. Prior to joining Western Digital, DeMaria served as senior vice president, human resources at Earth Tech, a subsidiary of Tyco International, from April 2004 to July 2005.  She also served as chief people officer at Overture from January 2001 to April 2003, and Vice President, Human Resources at Mitsubishi Motors North America from October 1997 to December 2000.  Before joining Mitsubishi, DeMaria held various senior human resources roles with Southern California Edison.  DeMaria also recently served on the board of directors of Orange County United Way.

With her expertise in all aspects of human resources and extensive leadership in the field, DeMaria is a results-oriented and creative executive with a successful track record in leading organizational growth and transformation.

DeMaria holds bachelor’s and master’s degrees in psychology from California State University, Fullerton.  She also holds a senior professional in human resources (SPHR) certification.

Michael C. Ray

Executive Vice President,
Chief Legal Officer and Secretary
Western Digital Corporation

Michael Ray was appointed as executive vice president, chief legal officer and secretary in November 2015. Prior to that, he served as senior vice president, general counsel and secretary since October 2010. He has held a number of positions at Western Digital Corporation since joining the company in 2000, including Senior Counsel, Assistant General Counsel and Vice President, Legal Services.

Currently, Ray is responsible for the company’s worldwide legal, risk management, compliance and government relations functions. He serves as a member of the company’s executive management team and provides strategic advice to the team and the members of the company’s Board of Directors. He oversees teams responsible for supporting the company’s efforts to develop, manufacture, market and sell storage products globally through the company’s independent subsidiaries. He also leads teams responsible for protecting the company’s significant intellectual property, strengthening and defending the company’s brands worldwide, and complying with regulatory and public-company obligations.

Prior to joining Western Digital, Ray was corporate counsel for Wynn’s International, Inc., an NYSE-listed manufacturer of automotive parts and chemicals; served the U.S. District Court, Central District of California as judicial clerk; and practiced trial law, law and motion and labor/employment law at O’Melveny & Myers, LLP.

Ray holds a bachelor’s degree, with honors, from Harvard College; and a law degree, with honors, from Harvard Law School. Ray has received numerous awards and citations, including being honored as the Orange County Business Journal’s Public Company General Counsel of the Year for 2012.

Ray has served since 2001 as a director of Mercy House Transitional Living Center, based in Santa Ana, California, one of California’s largest providers of services and housing for homeless men, women and children. He is also a director of the United Way of Orange County, and has co-chaired the Orange County United Way Tocqueville Society Bench & Bar affinity group since 2013.


Executive Vice President, Memory Technology
Western Digital Corporation

Dr. Siva Sivaram was appointed executive vice president of memory technology in May 2016 when SanDisk was acquired by Western Digital and is responsible for the ongoing development of the company's industry-leading NAND flash memory, as well as the development of next-generation technologies, including 3D NAND (BiCS) and 3D ReRAM. Sivaram has over 30 years of experience in semiconductors, 3-D memory architectures, process technology, equipment and materials. He has held executive positions at Intel and Matrix Semiconductor, and at SanDisk after its acquisition of Matrix. Additionally, he was the Founder and CEO of Twin Creeks Technologies, a solar panel and equipment company.

Under his leadership, SanDisk created the world’s first cross point 3D memory technology, the world leading 15nm 2D NAND technology, and the industry’s first 256 Gigabit (Gb) 3-bit-per-cell (X3) 48-layer 3D NAND chip.

Sivaram has also served as a board member of several start-up firms, was entrepreneur-in-residence at Crosslink Capital and XSeed Capital, a research scholar at Matsushita Electric, and an adjunct faculty member at San Jose State University.

Additionally, Sivaram has published numerous technical papers as well as a textbook on Chemical Vapor Deposition, and he holds several patents. He earned his doctorate and master’s degrees in materials science from the Rensselaer Polytechnic Institute where he has been elected to its Board of Trustees. He is a Distinguished Alumnus of the National Institute of Technology, Tiruchi, India, where he earned his bachelor’s degree in mechanical engineering.