CorpDigest
Seagate Technology Holdings plc
Leadership History
3 leaders · Full leadership timeline
Last reviewed: 2025-06-08 · By Swet Parvadiya
Seagate's Mozaic 3+ heat-assisted magnetic recording drives heat the disk surface to 400 degrees Celsius for a nanosecond — a thermal pulse delivered through a near-field transducer attached to the write head — to temporarily overcome the superparamagnetic limit of magnetic recording and write bits smaller than conventional physics allows. That technology, developed over 15 years and more than $1.2 billion in annual R&D spending, enables storage densities that solid-state drives cannot economically match at the exabyte scale required by hyperscale data centers. The company generated $7.54 billion in fiscal year 2024 revenue, commanding a 42 percent share of the mass-capacity hard drive market. Together with Western Digital and Toshiba, Seagate controls approximately 95 percent of all magnetic media production on earth — one of the most concentrated industrial oligopolies in technology hardware. The 40,000-employee organization in Cupertino, California ships more exabytes of nearline magnetic storage than any other entity. Revenue collapsed from $14.1 billion in fiscal 2022 to $6.96 billion in fiscal 2023 — a 50 percent decline in twelve months driven by the same oversupply dynamics that devastated Samsung's memory semiconductor business. The recovery to $7.54 billion in fiscal 2024, driven by 29.5 percent non-GAAP gross margin expansion, reflects the nearline enterprise segment's recovery as hyperscale data centers resumed capacity buildout. Over 65 percent of Seagate's total fiscal 2024 revenue came from nearline enterprise — a structural shift from the consumer desktop and laptop drives that historically dominated the company's revenue mix. Alan Shugart, Finis Conner, Doug Mahon, and John Squires founded Seagate Technology in 1979 — originally as Shugart Technology — and launched the ST-506, the world's first 5.25-inch hard disk drive, in 1980. That product defined the form factor that personal computers used for a decade. The company renamed itself Seagate in 1981 and went public in 1986. Forty-four years later, the core technology — magnetic recording on spinning disks — remains Seagate's primary product, transformed by $1.2 billion in annual R&D from a consumer component into critical enterprise infrastructure.
Chief Executive Officer
Dave Mosley initiated a ruthless strategic pivot upon becoming CEO, exiting the low-margin consumer desktop and laptop drive markets to focus exclusively on high-margin nearline and enterprise storage, a decision that expanded non-GAAP gross margins from the historical 20% range to 29.5% in fiscal 2024.
Executive Vice President and Chief Financial Officer
Gianluca Romano has managed Seagate's balance sheet through the extreme cyclicality of the storage market, executing a massive $3 billion share repurchase program in fiscal 2024 while simultaneously reducing net debt to EBITDA to 1.8x, ensuring the company has the financial flexibility to fund the massive capital expenditure required for the HAMR transition.
President and Chief Operating Officer
Ban Seng Teh oversees Seagate's massive global manufacturing footprint in Thailand and Singapore, responsible for the critical execution of the Mozaic 3+ HAMR manufacturing ramp, achieving the high yields necessary to make the technology economically viable and fulfill the massive backlog of nearline orders from hyperscalers.
The third major structural challenge is the geopolitical and geographic concentration of Seagate's manufacturing footprint, with the vast majority of its final drive assembly and head gimbal manufacturing located in Thailand and Singapore, creating a massive single-point-of-failure risk in a region increasingly subject to supply chain disruptions, labor unrest, and shifting trade tariffs.
Stephen J. Luczo served as Seagate's CEO across two separate tenures totaling approximately 16 years of CEO leadership, plus additional time as executive chairman, making him the longest-serving and most consequential CEO in the company's history. His first tenure ran from July 1998, when the board ousted founder Alan Shugart and elevated Luczo from chief operating officer, through July 2004 when he stepped aside as part of a planned succession to Bill Watkins. Luczo remained as chairman through that period. He returned as CEO in January 2009 after Watkins was forced out following operational and customer-relationship difficulties, and served continuously through October 2017 when Dave Mosley succeeded him. He continued as executive chairman from 2017 to 2020, providing transitional support to Mosley. Total executive leadership exceeded two decades. During Luczo's tenures the company completed the 2000 Silver Lake leveraged buyout, the 2002 re-listing, the 2006 Maxtor acquisition, the 2011 Samsung HDD acquisition, the 2011 Thailand flood response, the industry consolidation to three players, the redomicile to Ireland, and the establishment of HAMR technology development. Luczo personally championed shareholder returns and reduced the diluted share count from over 400 million to approximately 280 million through aggressive buybacks during his tenure.
Dave Mosley became Seagate's CEO in October 2017 after serving as president since 2016 and chief operating officer earlier, succeeding Stephen Luczo who became executive chairman. Mosley joined Seagate in 1996 from Maxtor, where he led R&D, and held progressively senior engineering, operations, and product roles at Seagate over more than two decades before assuming the CEO position. As CEO, Mosley has driven three strategic priorities: the development and ramp of HAMR Mozaic technology delivering 30+ TB drives into hyperscale customers, the focus on mass capacity nearline drives as the strategic growth segment, and disciplined capital allocation through dividends and buybacks while navigating cyclical demand swings. He led the company through the 2018-2019 cycle, the 2020-2021 pandemic spike, the 2022-2023 hyperscale digestion downturn that drove revenue from $11.66 billion to $7.38 billion, and the 2024 recovery. Mosley executed the October 2022 restructuring that reduced headcount by approximately 3,000 employees and took $250 million in restructuring charges. He has personally championed the HAMR program through years of development delays and 2024 saw the first volume Mozaic 30 TB shipments to hyperscale customers, the strategic payoff of more than a decade of HAMR research. Mosley remains CEO.
William Watkins served as Seagate's CEO from July 2004 to January 2009, a four-and-a-half-year tenure that ended with his removal by the board amid operational disappointments and reportedly difficult relationships with key customers. Watkins, who had joined Seagate as chief operating officer in 2000 from his previous role at Quantum Corporation, was appointed CEO when Stephen Luczo stepped aside in a planned succession in 2004. During his tenure, Watkins completed the 2006 Maxtor acquisition for $1.9 billion, the largest in company history at that point, and oversaw the integration of Maxtor's operations. He drove the company through the 2007-2009 financial crisis as enterprise IT spending contracted sharply. However, Seagate experienced quality-control problems with certain enterprise drive product lines during his tenure, lost some hyperscale customer share to Western Digital and Hitachi GST, and the stock significantly underperformed peers from 2005 through early 2009. The board reportedly grew dissatisfied with the operational execution and reinstalled Luczo as CEO in January 2009. Watkins's departure also reflected his colorful management style that included publicly profanity-laced earnings commentary that some institutional investors viewed as undermining the company's enterprise customer relationships. He left technology and later founded a green-energy LED lighting company.
Beyond CEO Dave Mosley, Seagate's senior executive team includes chief financial officer Gianluca Romano, who joined in 2019 from STMicroelectronics, and president and chief operating officer Ban Seng Teh, who has been with Seagate since 2003 and was promoted to the combined president and COO role in 2019. Romano leads finance, investor relations, treasury, tax, and capital allocation, and has been the public face of Seagate's communication with investors through the fiscal 2023 cyclical trough and the fiscal 2024 recovery. Teh oversees global operations including manufacturing across the Singapore, Malaysia, Thailand, China, and Northern Ireland facilities, plus the supply chain organization. Other senior executives include the chief commercial officer responsible for hyperscale and enterprise customer relationships, the chief technology officer responsible for the HAMR Mozaic roadmap and adjacent technology development, the general counsel, and the chief human resources officer. The Seagate board of directors is chaired independently, and includes representatives drawn from technology, finance, and operating backgrounds. Mosley reports to the board and the executive team meets regularly to coordinate operational decisions. Headcount globally was approximately 33,000 employees at the end of fiscal 2024, down from approximately 36,000 before the October 2022 restructuring.