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Core & Main, Inc. (CNM)

Core & Main, Inc. (CNM) Insider Trading

Directors, officers and holders of more than 10% of CNM report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 295 transactions on file: 2 with code P, 2 with code S and 46 with other codes.

DateInsiderCodeShares
Oct 16, 2026Witkowski Mark RG Gift19,596
Aug 4, 2026Harper Carla DF Tax Payment242
Jul 22, 2026HUEBERT MICHAEL G.F Tax Payment1,301
Jul 6, 2026Hope James DP Purchase2,067
Jun 23, 2026Hardwick M SusanA Award2,799
Jun 23, 2026Gipson Dennis GA Award2,799
Jun 23, 2026MAZZARELLA KATHLEEN MA Award2,799
Jun 23, 2026Amirthalingam BhavaniA Award2,799
Jun 23, 2026Hope James DA Award2,799
Jun 23, 2026NEWMAN MARGARETA Award2,799
Jun 23, 2026Buck Robert MA Award2,799
Jun 23, 2026Kimbrough Orvin TA Award2,799
Jun 23, 2026Castellano James GA Award2,799
Jun 22, 2026Harper Carla DF Tax Payment568
Apr 17, 2026Bradbury Robyn LJ Other5,000
Apr 17, 2026Bradbury Robyn LS Sale1,647
Apr 17, 2026Bradbury Robyn LS Sale3,353
Apr 17, 2026Bradbury Robyn LC Conversion5,000
Apr 17, 2026Bradbury Robyn LC Conversion5,000
Apr 17, 2026Bradbury Robyn LJ Other5,000
Apr 7, 2026Hope James DP Purchase1,972
Apr 1, 2026Hardwick M SusanA Award580
Mar 12, 2026Harper Carla DA Award2,463
Mar 12, 2026Cowles Bradford AA Award7,086
Mar 12, 2026HUEBERT MICHAEL G.A Award37,539
Mar 12, 2026Harper Carla DA Award17,598
Mar 12, 2026Stephens John WeldonA Award936
Mar 12, 2026Bradbury Robyn LA Award34,488
Mar 12, 2026Cowles Bradford AA Award50,676
Mar 12, 2026Witkowski Mark RA Award131,382
Mar 12, 2026Witkowski Mark RA Award18,372
Mar 12, 2026Giles Jeffrey DA Award3,021
Mar 12, 2026Bradbury Robyn LA Award4,824
Mar 12, 2026HUEBERT MICHAEL G.A Award10,500
Mar 12, 2026Giles Jeffrey DA Award21,585
Mar 12, 2026Stephens John WeldonA Award6,684
Mar 11, 2026Stephens John WeldonF Tax Payment107
Mar 11, 2026Cowles Bradford AF Tax Payment607
Mar 11, 2026Bradbury Robyn LF Tax Payment404
Mar 11, 2026Witkowski Mark RF Tax Payment1,685
Mar 11, 2026HUEBERT MICHAEL G.F Tax Payment447
Mar 11, 2026Harper Carla DF Tax Payment89
Mar 11, 2026Whittenburg Mark GF Tax Payment331
Mar 10, 2026Witkowski Mark RF Tax Payment937
Mar 10, 2026LeClair Stephen OF Tax Payment3,081
Mar 10, 2026Harper Carla DF Tax Payment189
Mar 10, 2026Whittenburg Mark GF Tax Payment557
Mar 10, 2026Bradbury Robyn LF Tax Payment205
Mar 10, 2026Stephens John WeldonF Tax Payment198
Mar 10, 2026Cowles Bradford AF Tax Payment741

The full Form 4 history is on the CNM company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.