internal
Mark R. Witkowski
Chief Executive Officer
Executive
1 yr
9 reports
Leadership change Mark R. Witkowski was promoted to CEO (from CFO) · DEF 14A, May 13 2025
Core & Main, Inc. ·CNM
Two Presidents report directly to the CEO
Wholesalers · Fortune #497 · Functional structure · 6K employees · St. Louis, Missouri
View as of:
5
CEO span
↓ tighter than peers (avg 7)
2.2
Avg span
tight
3
Max depth
3 levels
2 yr
Avg tenure
↓ 4.0yr from FY2024
60%
Internal hires
↑ above industry avg
Consolidated financials FY2023 · period end 2026-02-01 · 10-K
Revenue
$7.6B
Operating income
$722M
Net income
$441M
Total assets
$6.1B
Sourced from Core & Main, Inc. DEF 14A · filed 2025-05-13 ↗ View on SEC
Interactive org chart
Core & Main, Inc. organizational chart
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Core & Main stands out for having two Presidents report directly to the CEO rather than a single COO. This page maps the current executive structure, key leaders, reporting lines, recent leadership changes, and peer comparisons for analysts and researchers.
What to model
Use the chart to test org decisions, not just view reporting lines
Start with the public baseline, then use the scenario views and source-backed changes to ask what happens when leadership, span, or team ownership shifts.
Latest signal Executive Chair Transition changed role as Board and Executive Leadership
Effective April 1, 2026, Stephen O. LeClair retired as Executive Chair and Board Chair; James Castellano became Board Chair.
Source · See change logScenario views in the chart
- Add a Chief Operating Officer Introduce a COO to consolidate operational oversight currently split between two Presidents.
- Consolidate to Single President Remove one President role and centralize operational leadership under a single President.
Atlas work this supports
- Connect Workday or UKG Get these analytics for YOUR org — tenure, span of control, headcount, automatically from your HRIS.
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- Plan a Reorg Use this as a starting point. Model scenarios, compare structures, present options to your board.
The people
Who's running this
5 executives identified as Named Executive Officers in the most recent SEC proxy. Bar length scales with tenure.
internal
Bradford A. Cowles
President
Operations
8 yr
1 reports
Michael G. Huebert
President
Operations
1 yr
1 reports
internal
Robyn L. Bradbury
Chief Financial Officer
Finance
1 yr
2 reports
Mark G. Whittenburg
General Counsel & Secretary
Legal
5 yr
1 reports
The pay
Executive compensation
From the most recent DEF 14A Summary Compensation Table. 1 named executive officers disclosed. Bar length scales with total compensation.
Stephen O. LeClair $5.4M
- Base salary
- $924K
- Stock awards
- $935K
- Option awards
- $2.81M
- Non-equity incentive
- $669K
- Other
- $41K
- Fiscal year
- FY2024
- Source
- SEC DEF 14A ↗
The businesses
How Core & Main, Inc. divides the work
3 divisions report into the group CEO. Tile size scales with estimated headcount.
Operations
4K employees
President (Bradford A. Cowles / Michael G. Huebert)
Oversees branch operations, logistics, and customer execution across regions.
Finance
300 employees
Chief Financial Officer (Robyn L. Bradbury)
Manages financial reporting, capital allocation, and investor relations.
Legal & Governance
100 employees
General Counsel & Secretary (Mark G. Whittenburg)
Responsible for legal compliance, governance, and corporate secretary functions.
The thesis
Why this org is unusual
Two Presidents reporting directly to the CEO is the most distinctive feature of Core & Main’s structure.
Rather than a single COO or a unified operations head, the company splits top-line operational leadership across two President roles, both at level 2. This concentrates operational authority while keeping the CEO closely connected to day-to-day execution.
The remainder of the organization is conventionally functional, with Finance and Legal reporting directly to the CEO. Notably, there is no disclosed COO role, reinforcing the Presidents’ importance in translating strategy into execution across regions and end markets.
This structure aligns with Core & Main’s geographically distributed branch network, allowing parallel operational oversight while maintaining a relatively flat four-level hierarchy.
- Two Presidents at level 2
- No COO role
The comparison
How Core & Main, Inc. stacks up
Compared with other large industrial and specialty distributors, Core & Main’s use of dual Presidents is unusual. Most peers such as W.W. Grainger or Fastenal centralize operations under a COO or a single President, whereas Core & Main splits that authority. The absence of a COO mirrors some peers, but the …
C-suite size
Reporting depth
Core & Main, Inc.
3 levels
5 levels
5 levels
SiteOne Landscape Supply
5 levels
Beacon Roofing Supply
5 levels
Avg C-suite tenure
Core & Main, Inc.
2 yr
6 yr
10 yr
SiteOne Landscape Supply
5 yr
Beacon Roofing Supply
4 yr
Has COO / Has CAIO
Core & Main, Inc. — no COO — no CAIO
SiteOne Landscape Supply ✓ COO — no CAIO
Beacon Roofing Supply ✓ COO — no CAIO
Current signals
What changed recently
The most significant recent change was the March–April 2026 transition removing the Executive Chair role and reshaping board leadership.
- reorgExecutive Chair Transition Board and Executive Leadership
Effective April 1, 2026, Stephen O. LeClair retired as Executive Chair and Board Chair; James Castellano became Board Chair.
Source - departedJohn R. Schaller Executive Vice President
Retired effective October 31, 2025, with responsibilities redistributed among existing executives.
Source
Leadership Timeline
Year-over-year executive structure based on SEC proxy and annual filings.
FY2025
DEF 14A filed 2025-05-13
- CEO
- Mark R. Witkowski
- CEO span
- 5
- C-suite
- 5
- Avg tenure
- 2.5 yr
Year marked by executive transition elevating the CFO to CEO.
Named executive officers (5)
- Mark R. Witkowski - CEO since 2025
- Robyn L. Bradbury - CFO since 2025
- Bradford A. Cowles - President since 2018
- Michael G. Huebert - President since 2024
- John R. Schaller - EVP
FY2024
DEF 14A filed 2024-05-14
- CEO
- Stephen O. LeClair
- CEO span
- 4
- C-suite
- 4
- Avg tenure
- 6 yr
Single-CEO structure prior to 2025 executive transition.
Named executive officers (4)
- Stephen O. LeClair - CEO
- Mark R. Witkowski - CFO since 2016
- Bradford A. Cowles - President since 2018
- John R. Schaller - EVP
FY2023
DEF 14A filed 2023-05-16
- CEO
- Stephen O. LeClair
- CEO span
- 4
- C-suite
- 4
- Avg tenure
- 7 yr
Stable leadership team ahead of later transition.
Named executive officers (4)
- Stephen O. LeClair - CEO
- Mark R. Witkowski - CFO since 2016
- Bradford A. Cowles - President since 2018
- John R. Schaller - EVP
Year-over-year changes
The CEO role transitioned from Stephen LeClair to Mark Witkowski, expanding the CEO’s direct span.
- CEO span: 4 → 5
- C-suite size: 4 → 5
- Avg tenure: 6 → 2.5 yr
- promoted Mark R. Witkowski - CEO (was CFO) (DEF 14A, May 13 2025)
Frequently Asked Questions
Who is the CEO of Core & Main?
Mark R. Witkowski has served as CEO since March 31, 2025, following his promotion from CFO.
What type of organizational structure does Core & Main use?
Core & Main uses a primarily functional structure with operational leadership split across two Presidents.
How many direct reports does Core & Main's CEO have?
The CEO has five direct reports, including two Presidents, the CFO, and the General Counsel.
How has Core & Main's leadership changed recently?
In late 2025 and early 2026, an EVP retired and the Executive Chair role was eliminated, reshaping board leadership.
Does Core & Main have a COO?
No. Operational leadership is handled by two Presidents who report directly to the CEO.
Sources
- Form 8-K, Mar 27, 2026
- Form 8-K, Aug 18, 2025
- SEC EDGAR: Core & Main, Inc. DEF 14A Proxy Statement
- SEC EDGAR: Core & Main, Inc. 10-K Annual Report
Reference
Cite this page
If you reference this page in research, analysis, or news writing, use one of the formats below. Citation includes the SEC filing source where applicable.
APA 7th
Creately. (2026). Core & Main, Inc. organizational structure. Creately. Retrieved , from https://creately.com/org-chart/fortune-500/core-and-main/MLA 9th
"Core & Main, Inc. Organizational Structure." Creately, April 1, 2026, https://creately.com/org-chart/fortune-500/core-and-main/. Accessed .Chicago 17
Creately. "Core & Main, Inc. Organizational Structure." Last modified April 1, 2026. https://creately.com/org-chart/fortune-500/core-and-main/.Original SEC source View on SEC ↗
Core & Main, Inc.. DEF 14A. Filed 2025-05-13. U.S. Securities and Exchange Commission. https://www.sec.gov/Archives/edgar/data/1856525/000185652525000105/cnm-20250512.htmPermanent URL: https://creately.com/org-chart/fortune-500/core-and-main/ · last updated 2026-04-01