Core & Main, Inc.
A specialty distributor that supplies pipes, valves, fittings, storm drainage, water meters, and fire protection gear to municipalities, contractors, and private water companies across the U.S. and Canada, stocking hundreds of thousands of products in more than 370 branches. It was born in 2017 when private equity firm Clayton, Dubilier & Rice carved the waterworks arm out of HD Supply, which itself grew from Home Depot's brief push into wholesale. Its name nods to the "core" essentials of infrastructure and the water "mains" at the heart of what it sells.
Sold 20.00M
Sold 154.56M
Granted 15.2K · Sold 495.7K
Granted 59.7K · Sold 420.0K
Granted 16.3K · Sold 374.8K
Granted 24.7K · Sold 225.0K
Granted 18.9K · Sold 239.9K
Granted 16.8K · Sold 94.0K
Granted 7.7K · Sold 35.0K
Granted 16.8K · Sold 64.0K
Granted 217.3K · Sold 745.0K
Granted 135.3K · Sold 211.4K
Granted 31.7K · Sold 300.0K
Granted 27.8K
Granted 18.0K
Granted 16.8K
Granted 16.8K · Sold 25.0K
Granted 16.8K · Sold 15.0K
Granted 15.8K
Granted 4.6K
Granted 7.8K · Bought 2.0K
Granted 3.4K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| CD&R Fund X Advisor Waterworks B, L.P. +7 co-filers10% owner · 5 transactions | — | 14.01Mas of Jan 2022 | — | — | 20.00M |
| CD&R Fund X Advisor Waterworks B, L.P. +6 co-filers10% owner · 68 transactions | — | 7.42Mas of Jan 2024 | — | — | 154.56M |
| Schneider Laura KChief Human Resources Officer · 32 transactions | — | 1.05Mas of Jun 2025 | 15.2K | — | 495.7K |
| Witkowski Mark RChief Executive Officer, Director · 34 transactions | — | 667.4K | 59.7K | — | 420.0K |
| Whittenburg Mark GGeneral Counsel and Secretary · 45 transactions | — | 538.6K | 16.3K | — | 374.8K |
| Giles Jeffrey DEVP, Corporate Development · 39 transactions | — | 242.6K | 24.7K | — | 225.0K |
| Stephens John WeldonChief Accounting Officer · 49 transactions | — | 219.3K | 18.9K | — | 239.9K |
| Castellano James GDirector · 23 transactions | — | 210.4K | 16.8K | — | 94.0K |
| Bradbury Robyn LChief Financial Officer · 16 transactions | — | 175.0K | 7.7K | — | 35.0K |
| Kimbrough Orvin TDirector · 27 transactions | — | 99.2K | 16.8K | — | 64.0K |
| LeClair Stephen OExecutive Chair, Director · 35 transactions | — | 66.1K | 217.3K | — | 745.0K |
| Schaller John RExecutive Vice President · 29 transactions | — | 29.5Kas of May 2025 | 135.3K | — | 211.4K |
| Cowles Bradford APresident · 40 transactions | — | 25.5K | 31.7K | — | 300.0K |
| Huebert Michael G.President · 8 transactions | — | 25.3K | 27.8K | — | — |
| Amirthalingam BhavaniDirector · 6 transactions | — | 18.0K | 18.0K | — | — |
| Mazzarella Kathleen MDirector · 5 transactions | — | 16.8K | 16.8K | — | — |
| Gipson Dennis GDirector · 9 transactions | — | 16.8K | 16.8K | — | 25.0K |
| Newman MargaretDirector · 9 transactions | — | 16.8K | 16.8K | — | 15.0K |
| Buck Robert MDirector · 5 transactions | — | 15.8K | 15.8K | — | — |
| Harper Carla DSenior VP, Human Resources · 6 transactions | — | 13.3K | 4.6K | — | — |
| Hope James DDirector · 5 transactions | — | 9.7K | 7.8K | 2.0K | — |
| Hardwick M SusanDirector · 2 transactions | — | 3.4K | 3.4K | — | — |
| Sleeper Nathan KDirector · 2 transactions | — | 0as of Jan 2024 | — | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -177.81M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.