Mark R. Witkowski
Chief Executive Officer, Director · Core & Main, Inc.
- 2025
- Mar 13, 2026
- 4
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies Mark R. Witkowski files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Robyn L. Bradbury - $263K in CNM purchases and sales in the last 12 months
- James D. Hope - $195K in CNM purchases and sales in the last 12 months
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Frequently asked questions
Who is Mark R. Witkowski?
Mark R. Witkowski is a corporate insider, tracked as Chief Executive Officer, Director of Core & Main, Inc. (CNM). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Mark R. Witkowski last file a Form 4?
The most recent primary Form 4 on record is dated 13 March 2026, one of 4 filings going back to 2025.
Has Mark R. Witkowski been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($12.53M) across all tracked filings.
