Massivemarkets

SEC Form 4

Core & Main, Inc. (CNM) insider trading

In the 12 months to Oct 24, 2026, one CNM insider reported open-market sales of $262.7K across 1 filing; one director bought $195.1K.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$262.7K
1 filing · 1 insider
Open-market purchases
$195.1K
2 filings · James D. Hope, Director
Pre-arranged sales (10b5-1)
1 of 1
All $262.7K sold was pre-arranged

Who traded CNM, and when

  • Purchase
  • Sale
  • Sale, pre-arranged (10b5-1)

CNM daily close from Oct 24, 2025 to Oct 23, 2026, between $40.35 and $59.09, last $41.97. 1 sale and 2 purchase filings by 2 insiders, marked at their filing dates. Robyn L. Bradbury, Chief Financial Officer: sold $262.7K across 1 filing, first filed Apr 21, 2026, last Apr 21, 2026. James D. Hope, Director: bought $195.1K across 2 filings, first filed Apr 9, 2026, last Jul 8, 2026.

Largest mark · tap a row for others

Robyn L. Bradbury · Chief Financial Officer

Sale $262,724

5,000 shares at $52.54 avg

Filed Apr 21, 2026 · traded Apr 17

Pre-arranged (10b5-1) · close on filing date $49.73

CNM daily closelast $41.97

Robyn L. Bradbury · Chief Financial Officer

$262.7K sold

James D. Hope · Director

$195.1K bought
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Has Core & Main, Inc.'s CEO sold stock?

No. Mark R. Witkowski (CEO) made no open-market sales filed as CEO in the last 12 months.

Open-market trades

3 filings in the last 12 months
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Robyn L. BradburyChief Financial Officer$262.7K—1100% of sales
James D. HopeDirector—$195.1K2—
Other insider activity (not market trades) · 45 records
  • Tax withholding25 records
  • Grants and awards18 records
  • Gifts1 record
  • Other1 record

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

Build this yourself

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Agent prompt

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for CNM every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.