Gartner Expert

DiAnna Thimjon

Sr Executive Partner

DiAnna is a senior Executive Partner within Gartner Executive Programs driving value for large enterprise clients throughout the US. Bringing 25+ years of cross-functional (operations, sales, product, IT) and cross-industry (CPG, E-Commerce/Start-Up, Federal, Financial, Prof. Svc. (Legal, A/E/C)) experience, she excels at enabling transformational change through technology and process change management. Her role as a trusted strategic advisor is to ensure her clients are transforming their leadership, capabilities and strategies in our ever-changing digital world.

Previous experience

She brings broad experience from roles in operations, sales, product, and IT across CPG, e‑commerce, federal, financial services, and professional services. She has served as a global CIO/CTO for private and public companies with teams on six continents, and as the global CISO for an $8B consumer products organization operating in 30+ countries.

In addition, she is a West Point graduate, former military intelligence officer, and founder of multiple small businesses. These experiences, combined with her corporate background, shape her focus on:

- Strengthening executive leadership capabilities

- Delivering business value while guiding organizations through change

- Enabling technology‑driven transformation

- Helping leaders evolve strategies in a fast‑moving digital world

Professional background

Cherokee Federal, Global CIO, 2 years

Clyde & Co Global Law Firm, Global CIO, 4 years

American Century Investments, Global VP EPMO , 1 years

HNTB, CTO, 3 years

Hallmark Cards, Global CISO, 12 years

D2Cycles, COO/Co-Founder, 10 years

US Army, Military Intelligence Officer, Captain, Head of Intelligence, 5 years

Education

United States Military Academy at West Point, Bachelor of Science [Computer Science Engineering, English]

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