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sellWeak cluster of 310b5-1 plan

John R Schaller sold $539k of CNM

Executive Vice President at Core & Main, Inc.. 9,794 shares at an average of $55.00, traded May 28, 2025, filed May 30, 2025.

Warning score
24
Value
$539k
9,794 shares
Holdings after
19,689
-33% from before
From 52-week low
+41%
low $38.80, close $54.68
From 52-week high
-5%
high $57.26, as of May 28, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $539k at market
    +19
  • Share of holdings sold
    Sold 33% of holdings
    +10
  • Cluster
    3 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +10.1%, 3m +18.1%, 6m -11.8%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

CNMOct 9, 2026 · close 40.35
Since filing May 30, 2025: -26.4%SPY +34.3% · excess -60.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001856525-25-000108, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 28, 2025MOption exercise
Class A Common Stock10b5-1
+9,794$50.12$491k29,483May 30, 2025
May 28, 2025SOpen-market sale
Class A Common Stock10b5-1
-9,794$55.00$539k19,689May 30, 2025
May 28, 2025MOption exercise
Options (Rights to Buy)derivative10b5-1
-9,794$0.00$019,588May 30, 2025

Related signals

Other insiders at Core & Main, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
25Weak
CNMsell10b5-1
Core & Main, Inc.
Robyn L Bradbury
Chief Financial Officer
$263k
5,000 shares
-29%
35Weak
CNMbuy
Core & Main, Inc.
James D Hope
director
$100k
1,972 shares
+40%
50Moderate
CNMsell10b5-1
Core & Main, Inc.
Mark R Witkowski
Chief Executive Officer
$6.4M
100,000 shares
-74%
41Moderate
CNMsell 410b5-1
Core & Main, Inc.
Robyn L Bradbury
Chief Financial Officer
$323k
5,000 shares
-37%
55Moderate
CNMsell 410b5-1
Core & Main, Inc.
James G Castellano
director
$2.7M
43,994 shares
-100%
65Notable
CNMsell 510b5-1
Core & Main, Inc.
Mark R Witkowski
Chief Executive Officer
$6.1M
100,000 shares
-74%
55Moderate
CNMsell 410b5-1
Core & Main, Inc.
Orvin T Kimbrough
director
$1.5M
23,962 shares
-63%
65Notable
CNMsell 3
Core & Main, Inc.
Stephen O LeClair
Executive Chair
$7.8M
125,000 shares
-83%
55Moderate
CNMsell 210b5-1
Core & Main, Inc.
Robyn L Bradbury
Chief Financial Officer
$1.5M
25,000 shares
-75%
55Moderate
CNMsell 310b5-1
Core & Main, Inc.
Mark G Whittenburg
General Counsel and Secretary
$3.0M
50,000 shares
-472%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

John R Schaller sold $539k of CNM | InsiderTell