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A. William Stein

As of October 6, 2026, A. William “Bill” Stein is partner and chief investment officer at Primary Digital Infrastructure. The firm assigns him investment strategy, sector relationships, and investment-committee service. Its biography lists board roles at Verne, Crusoe, Host Hotels & Resorts, and Salute, plus advisory affiliations. These disclosures establish roles; they do not establish personal ownership or control of those companies. Public evidence 1 Reviewed public evidence.

Updated

Known For

  • Leading Digital Realty through data-centre expansion during his 2014–2022 CEO tenure, including the sector’s growing role in cloud computing, enterprise interconnection and digital infrastructure.
  • Bringing experience from real-estate investment and finance: before Digital Realty he worked at GI Partners and served as president and COO of TriNet Corporate Realty Trust.
  • Completing a CEO succession on December 13, 2022, when Andrew Power became CEO and Stein left that role. Company-level portfolio and development figures are not attributed to Stein personally. Digital Realty transition release · 2014 appointment announcement

Career

Stein joined GI Partners as a consultant in 2004 and served as a managing director. Before that, he was president and COO of TriNet Corporate Realty Trust, which was acquired by iStar in 1999, and held financial roles at Westinghouse and Duquesne Light. Digital Realty appointed him CEO in November 2014 after he had served as interim CEO and CFO. The company appointed Andrew Power CEO on December 13, 2022, when Stein left the CEO role and its board. Power had been at Digital Realty since 2015, first as CFO and then as president. Digital Realty transition release · CEO appointment filing · Digital Realty leadership

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Sources

Reviewed Profile Update — 2026-10-06

Leadership Chronology. Digital Realty appointed Andrew Power CEO and a director effective December 13, 2022. Stein left the CEO position and resigned from its board that day, with employment continuing through year-end. The previous account of a 2024 retirement was incorrect. PDI describes his Digital Realty CEO tenure as 2014–2022, preceded by CIO service from 2004–2014. Public evidence 1 Public evidence 2 Reviewed public evidence.

Investment Interpretation. Synthesis: Stein connects listed data-center operations with a private infrastructure capital platform. His current investment remit is distinct from running every property or operating business named in his biography. Personal commitments and realized investment returns remain unestablished by these sources. Public evidence 1 Public evidence 2 Reviewed public evidence.

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