CNM
CORE & MAIN-A (CNM)
NYSE
$46.44-$0.81 (-1.71%)
Price as of Jun 23, 2026 4:32 PM EDT
  • $8.8B
    Market Cap
  • -19.01%
    1-Year Change
  • Industrial Distribution
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK FUNDING, INC. /DE
11.93%
22.3M
+1.6M (+6.98%)
Dec 31, 2024
BLACKROCK INC.
11.76%
22.0M
+2.4M (+11.00%)
Jun 30, 2024
BLACKROCK, INC.
10.26%
19.2M
+277,506 (+1.44%)
Mar 31, 2026
VANGUARD GROUP INC
9.40%
17.6M
-106,652 (-0.61%)
Dec 31, 2025
CAPITAL WORLD INVESTORS
6.18%
11.6M
+5.3M (+45.62%)
Mar 31, 2026
N/A
4.52%
8.5M
+8.5M (+100.00%)
Mar 31, 2026
SELECT EQUITY GROUP, L.P.
3.88%
7.3M
-524,169 (-7.23%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions4.1B (85.00%)
  • Mutual Funds707.3M (14.82%)
  • Insiders8.7M (0.18%)
  • Other0 (0.00%)

Insider Transactions

  • 0.18% (8.7M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $251,802.07
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $9.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Hope James D
Buy
Apr 07, 2026
$99,970.54
1,972
$50.70
6,939
Hardwick M Susan
Award
Apr 01, 2026
$0.00
580
$0.00
580
HUEBERT MICHAEL G.
President
Award
Mar 12, 2026
$0.00
37,539
$0.00
37,539
Stephens John Weldon
Chief Accounting Officer
Award
Mar 12, 2026
$0.00
6,684
$0.00
6,684
Witkowski Mark R
Chief Executive Officer
Award
Mar 12, 2026
$0.00
131,382
$0.00
131,382
Harper Carla D
Senior VP, Human Resources
Award
Mar 12, 2026
$0.00
17,598
$0.00
17,598
HUEBERT MICHAEL G.
President
Award
Mar 12, 2026
$0.00
10,500
$0.00
25,337
Stephens John Weldon
Chief Accounting Officer
Award
Mar 12, 2026
$0.00
936
$0.00
17,374
Witkowski Mark R
Chief Executive Officer
Award
Mar 12, 2026
$0.00
18,372
$0.00
51,119
Giles Jeffrey D
EVP, Corporate Development
Award
Mar 12, 2026
$0.00
21,585
$0.00
21,585
Bradbury Robyn L
Chief Financial Officer
Award
Mar 12, 2026
$0.00
34,488
$0.00
34,488
Giles Jeffrey D
EVP, Corporate Development
Award
Mar 12, 2026
$0.00
3,021
$0.00
9,681
Cowles Bradford A
President
Award
Mar 12, 2026
$0.00
50,676
$0.00
50,676
Bradbury Robyn L
Chief Financial Officer
Award
Mar 12, 2026
$0.00
4,824
$0.00
12,500
Harper Carla D
Senior VP, Human Resources
Award
Mar 12, 2026
$0.00
2,463
$0.00
13,874
Cowles Bradford A
President
Award
Mar 12, 2026
$0.00
7,086
$0.00
25,491
HUEBERT MICHAEL G.
President
In Kind
Mar 11, 2026
$21,974.52
447
$49.16
14,837
Whittenburg Mark G
General Counsel and Secretary
In Kind
Mar 11, 2026
$16,271.96
331
$49.16
8,525
Witkowski Mark R
Chief Executive Officer
In Kind
Mar 11, 2026
$82,834.60
1,685
$49.16
32,747
Bradbury Robyn L
Chief Financial Officer
In Kind
Mar 11, 2026
$19,860.64
404
$49.16
7,676
Stephens John Weldon
Chief Accounting Officer
In Kind
Mar 11, 2026
$5,260.12
107
$49.16
16,438
Harper Carla D
Senior VP, Human Resources
In Kind
Mar 11, 2026
$4,375.24
89
$49.16
11,411
Cowles Bradford A
President
In Kind
Mar 11, 2026
$29,840.12
607
$49.16
18,405
Whittenburg Mark G
General Counsel and Secretary
In Kind
Mar 10, 2026
$27,504.66
557
$49.38
8,856
Stephens John Weldon
Chief Accounting Officer
In Kind
Mar 10, 2026
$9,777.24
198
$49.38
16,545
Bradbury Robyn L
Chief Financial Officer
In Kind
Mar 10, 2026
$10,122.90
205
$49.38
8,080
Harper Carla D
Senior VP, Human Resources
In Kind
Mar 10, 2026
$9,332.82
189
$49.38
11,500
Witkowski Mark R
Chief Executive Officer
In Kind
Mar 10, 2026
$46,269.06
937
$49.38
34,432
LeClair Stephen O
Executive Chair
In Kind
Mar 10, 2026
$152,139.78
3,081
$49.38
66,136
Cowles Bradford A
President
In Kind
Mar 10, 2026
$36,590.58
741
$49.38
19,012