IBM Organizational Structure

About the company

International Business Machines Corporation sells enterprise software, IT consulting and computing infrastructure, and finances the resulting deals through a captive lending arm. It has been listed on the New York Stock Exchange for most of a century, is incorporated in New York, and runs from a headquarters at Armonk that houses no manufacturing at all. Its 2025 Form 10-K puts operations in more than 175 countries and revenue at $67.5 billion.

Headcount is the number people get wrong most often. IBM reported roughly 264,300 employees in itself and its wholly owned subsidiaries at the end of 2025, then separately disclosed about 8,700 more in less-than-wholly-owned subsidiaries and about 13,800 complementary workers — so a defensible total workforce figure is nearer 287,000, and the gap between the two numbers is a structural fact rather than a rounding one.

IBM is worth studying structurally because it is one of the few companies at this scale that publishes a leadership team without publishing the lines between them. Segment reporting says how the money is organized; the newsroom bios say who the senior people are; almost nothing in the public record says who reports to whom. This chart reconstructs the shape from the small number of reporting lines IBM has actually stated in writing, and says plainly where it is reading a line off a job title instead.

International Business Machines Corporation (IBM) organizational chart

International Business Machines Corporation (IBM)'s reporting structure as of 2026-08. Drag to pan, scroll to zoom — or open it in QueryChart and edit it as your own.

Four reporting segments, a functional spine, and a sales matrix over both

The revenue axis is divisional. IBM executes through four segments — Software, Consulting, Infrastructure and Financing — and three of them map onto a named executive on the published leadership team: Rob Thomas for Software, Mohamad Ali for Consulting, Ric Lewis for Infrastructure. Financing, the captive finance arm, has no separately published head, which is why the fourth segment appears in the accounts but not on this diagram.

Running alongside those segments is a global functional spine reporting to the CEO: finance and operations under James J. Kavanaugh, legal under Anne Robinson, human resources under Nickle J. LaMoreaux, brand and government relations under Jonathan H. Adashek, strategy and M&A under Alexander F. Stern, and internal transformation under Joanne Wright. These functions are global rather than duplicated per segment, which is what keeps a divisional company from becoming four companies.

The third axis is geography, and it is explicitly matrixed rather than drawn as a fourth division. Rob Thomas holds the Chief Commercial Officer title alongside Software, giving him responsibility for worldwide sales, partnerships and the ecosystem on top of a product segment. Regional leaders such as Ana Paula Assis in Europe, the Middle East, Africa and Asia Pacific, and Neil Dhar in Americas Consulting, therefore answer to a segment and to a territory at the same time. This chart draws the segment side of that relationship, because it is the only side stated anywhere public.

Two things sit deliberately outside the operating line. IBM Research reports to the CEO rather than into a product segment — the October 2025 announcement naming Jay M. Gambetta as Director says so in as many words — which is how decade-horizon quantum and semiconductor work is funded outside a quarterly P&L. And Red Hat is kept as a separately led company under its own President and CEO even though its results are consolidated inside the Software segment, preserving an independence the acquisition was partly bought for.

Key leadership roles

1. Arvind Krishna

   Chairman of the Board, President and Chief Executive Officer — Ran the Cloud and Cognitive Software business and led the Red Hat acquisition before becoming CEO in 2020; added the chairmanship in 2021.

2. Rob Thomas

   Senior Vice President, Software and Chief Commercial Officer — The widest span on the chart: the Software segment plus global responsibility for IBM revenue and profit, including worldwide sales and the partner ecosystem.

3. Mohamad Ali

   Senior Vice President, IBM Consulting — One of the three reporting lines IBM has stated in writing — his 2024 appointment names Arvind Krishna as his manager.

4. Ric Lewis

   Senior Vice President, Infrastructure — Owns the mainframe, storage and systems segment; on the leadership team but not a Section 16 executive officer.

5. James J. Kavanaugh

   Senior Vice President, Finance and Operations, and Chief Financial Officer

6. Jay M. Gambetta

   Director, IBM Research — Appointed October 2025 with the announcement stating explicitly that the role reports to the CEO.

7. Joanne Wright

   Senior Vice President, Transformation and Operations — Runs procurement, the CIO organization, data and analytics and real estate — the function that uses IBM as its own first customer.

8. Anne Robinson

   Senior Vice President and Chief Legal Officer

9. Nickle J. LaMoreaux

   Senior Vice President and Chief Human Resources Officer

10. Jonathan H. Adashek

    Senior Vice President and Chief Global Affairs Officer — Brand, communications and government relations in one function; IBM's own investor and newsroom pages have carried different wordings of this title.

11. Gary D. Cohn

    Vice Chairman — A standing corporate seat with no line P&L, used for client, government and institutional relationships.

12. Alexander F. Stern

    Senior Vice President, Strategy and M&A

13. Matt Hicks

    President and Chief Executive Officer of Red Hat — Shown reporting to the IBM CEO on the precedent set under the previous Red Hat CEO; no current IBM page restates the line, and Red Hat's results consolidate into the Software segment.

14. Ana Paula Assis

    Senior Vice President and Chair, IBM Europe, Middle East, Africa and Asia Pacific — The least certain line on this chart: placed under the Chief Commercial Officer because geographic sales rolled up to that role in the 2023 structure, but she may report directly to the CEO.

How this structure supports the business

Segmenting by what is sold rather than by who buys it lets IBM run three very different businesses on their own economics. Software carries software margins and grew 10.6% in 2025; Consulting is a people business whose cost base is headcount; Infrastructure runs on a multi-year mainframe cycle that makes a strong year and a weak year both predictable. A single functional organization would have to average those three rhythms into one plan, and would set the wrong plan for at least two of them.

The global functional spine is what stops that from fragmenting. One legal organization, one finance organization and one HR organization mean a segment head inherits the compliance posture, the capital allocation process and the job architecture rather than building them, which matters enormously in 175 countries where each of those is locally regulated. It also means the segments compete for capital through a single CFO instead of holding it captive.

The commercial matrix exists because IBM's largest customers do not buy by segment. A bank signing a hybrid-cloud contract is buying software licences, mainframe capacity and a multi-year consulting engagement in one negotiation, and the only structure that can price that as one deal is one that puts worldwide sales above the segments rather than inside them.

Advantages and disadvantages

Putting the Software segment and the Chief Commercial Officer role in one pair of hands removes the classic product-versus-sales handoff: one executive owns both what gets built and whether it sells, and can pull the whole portfolio through a single go-to-market motion.

It concentrates an extraordinary span in one seat — the largest segment plus all worldwide revenue and the partner ecosystem. Infrastructure and Consulting depend on a sales channel they do not control, and succession for that role is a single point of failure.

Keeping Red Hat under its own President and CEO preserves the open-source neutrality and developer trust that made the acquisition worth $34 billion; Red Hat can back projects that compete with IBM products.

It creates a second software leadership structure inside the same reporting segment, with duplicated product, sales and partner motions and recurring ambiguity over who owns a hybrid-cloud account that both sides can sell into.

A Research organization reporting to the CEO insulates decade-horizon bets — quantum systems, processor design, semiconductor materials — from segment leaders who are measured quarterly and would never fund them.

That same insulation is IBM's most-documented historical weakness: inventions that never crossed into a product P&L. The gap between Research and the segments is bridged by executive attention rather than by structure, which makes it depend on who holds the CEO job.

The segment-by-geography matrix lets IBM sell and deliver locally across more than 175 countries while global product accountability stays in one place, which is the only way a contract spanning software, mainframes and consulting can be signed once.

Most senior client-facing leaders effectively answer to both a segment and a territory, which slows decisions and makes accountability genuinely ambiguous — visible in the fact that IBM itself publishes no reporting lines below the CEO.

Interesting facts

• IBM designates only seven Section 16 executive officers in its 2025 Form 10-K — Krishna, Cohn, Fehring, Kavanaugh, LaMoreaux, Robinson and Thomas — while publishing an eighteen-person executive leadership team. The heads of Consulting, Infrastructure and Research are on the leadership team but are not legally executive officers.
• IBM publishes who its senior leaders are and does not publish who they report to. Only three sets of reporting lines have been stated in writing: Research to the CEO in October 2025, Consulting to the CEO in May 2024, and the January 2023 announcement covering Software, ecosystem and strategy.
• Research reports to the CEO rather than into any product segment, which is what lets quantum and semiconductor programmes run on a decade horizon rather than a quarterly one.
• Consulting is the only segment whose internal split is visible at corporate level: a global segment head, an offerings and go-to-market leader and an Americas geography leader all sit at the same published rank, reflecting how much consulting revenue is sold and delivered regionally.
• The Transformation and Operations function runs IBM as its own first customer — procurement, the CIO organization, data and analytics and real estate all sit in one group, and applying IBM's own automation to them has been credited internally with roughly $4.5 billion in savings.
• IBM keeps a permanent Vice Chairman seat with no line P&L, a corporate relationship role for clients, governments and institutions that most peer technology companies do not maintain at all.

Frequently asked questions

What type of organizational structure does IBM use?

A hybrid. The revenue axis is divisional — four reporting segments in Software, Consulting, Infrastructure and Financing — sitting over a global functional spine of finance, legal, HR, global affairs, strategy and transformation that reports to the CEO. A geographic sales organization is matrixed across both, so many senior client-facing leaders answer to a segment and a territory at once.

Does IBM publish an org chart?

No. IBM publishes an executive leadership roster on its newsroom and investor pages and lists its Section 16 executive officers in the annual 10-K, but it does not publish reporting lines below the CEO. Individual appointment announcements occasionally state one — Jay M. Gambetta to the CEO in October 2025, Mohamad Ali to the CEO in May 2024 — and everything else has to be read off title scope, which is why this chart marks its least certain lines.

Who runs IBM's business segments?

Rob Thomas leads Software, Mohamad Ali leads IBM Consulting and Ric Lewis leads Infrastructure. Financing, the fourth reporting segment, has no separately published leader on the executive team, so it appears in IBM's accounts but not on the leadership roster or on this chart.

How does Red Hat fit into IBM's structure?

Red Hat is a wholly owned subsidiary whose results are consolidated inside the Software segment, but it keeps its own President and CEO and its own leadership team rather than being folded into IBM's software management line. The separation is deliberate: it protects the open-source community standing that made Red Hat worth acquiring.

How many people does IBM employ?

About 264,300 in IBM and its wholly owned subsidiaries at the end of 2025. IBM separately reports roughly 8,700 people in less-than-wholly-owned subsidiaries and about 13,800 complementary workers, so a total workforce figure near 287,000 is equally defensible depending on which boundary you draw.

Use this org chart template

Open IBM's structure as an editable org chart, then swap in your own segments and functions to see how a divisional-plus-functional hybrid looks at your scale.

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