Advanced Drainage Systems WMS Insider Ownership

NYSE WMS
$131.77 -1.90 (-1.42%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

7.23Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
9.66%
-0.032% pp QoQ
Shares Held by Insiders
7.58Mn
filed for Sep 2026
-0.33% QoQ
Shares Outstanding
78.45Mn
78,447,000 shares
Direct Holdings
862.76K
Indirect: 6.72Mn
Net Shares Traded (QoQ)
-25.34K
net selling in Sep 2026
Insiders Holding Shares
25
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

WMS's three largest insider shareholders as of September 09, 2026 are Partners Holdings Llc Berkshire (TenPercentOwner, 6.43Mn shares), Partners Holdings Llc Berkshire (TenPercentOwner, 6.43Mn shares), Partners Holdings Llc Berkshire (TenPercentOwner, 6.43Mn shares).

Form 4 Holdings

Insiders Holding WMS

Insiders 25
Shares held 7.23Mn
Of outstanding 9.21%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Partners Holdings Llc Berkshire TenPercentOwner 62,107 6,367,265 6,429,372 89.0% 16 Dec, 2021
2 Roy E. Jr. Moore Executive Vice President 133,967 0 133,967 1.9% 23 May, 2023
3 Scott A Cottrill Evp, Cfo And Secretary 110,511 0 110,511 1.5% 28 May, 2026
4 Robert M Klein Evp, Sales 102,070 0 102,070 1.4% 29 May, 2024
5 Ross M Jones Director 70,749 0 70,749 1.0% 24 Jul, 2023
6 Kevin C Talley Evp And Cao 63,453 0 63,453 0.9% 28 May, 2026
7 Robert M Eversole Director 2,253 51,462 53,715 0.7% 03 Sep, 2026
8 D. Scott Barbour President And Chief Executive 0 51,652 51,652 0.7% 24 Aug, 2026
9 Tanya D Fratto Director 30,552 0 30,552 0.4% 20 Jul, 2026
10 De La Mesa Manuel J Perez Director 25,070 0 25,070 0.3% 20 Jul, 2026
11 Brian W. King Executive Vice President 21,686 0 21,686 0.3% 28 May, 2026
12 Alexander R Fischer Director 17,564 0 17,564 0.2% 20 Jul, 2026
13 Anil Seetharam Director 16,240 0 16,240 0.2% 20 Jul, 2026
14 Craig J. Taylor Executive Vice President 14,873 0 14,873 0.2% 28 May, 2026
15 Thomas J. Sr. Waun Evp, International 13,470 0 13,470 0.2% 01 Dec, 2025
16 Michael B. Coleman Director 12,587 0 12,587 0.2% 20 Jul, 2026
17 Patrick M. Jr Coyle Officer 10,039 0 10,039 0.1% 03 Sep, 2026
18 Kelly S. Gast Director 8,981 0 8,981 0.1% 20 Jul, 2026
19 Anesa Chaibi Director 8,698 0 8,698 0.1% 20 Jul, 2026
20 Mark Haney Director 8,196 0 8,196 0.1% 21 Jul, 2025
21 Michael G. Huebert Executive Vice President 7,225 0 7,225 0.1% 03 Jun, 2024
22 Tim A Makowski Officer 6,722 0 6,722 0.1% 28 May, 2026
23 Bret Martz Officer 3,089 0 3,089 0.0% 28 May, 2026
24 Darin S. Harvey Evp, Supply Chain Logistics 2,890 0 2,890 0.0% 11 Jun, 2025
25 Luther C Iv Kissam Director 1,972 0 1,972 0.0% 21 Jul, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

3,118 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
20 Aug, 2026 D. Scott Barbour Director, Officer Disposed G 2,000 $0.00 $0 51,652 Indirect
16 Jul, 2026 Tanya D Fratto Director Acquired A 1,110 $0.00 $0 30,552 Direct
16 Jul, 2026 Anesa Chaibi Director Acquired A 1,110 $0.00 $0 8,698 Direct
16 Jul, 2026 Robert M Eversole Director Acquired A 2,253 $0.00 $0 4,639 Direct
16 Jul, 2026 Alexander R Fischer Director Acquired A 1,110 $0.00 $0 17,564 Direct
16 Jul, 2026 De La Mesa Manuel J Perez Director Acquired A 1,782 $0.00 $0 25,070 Direct
16 Jul, 2026 Michael B. Coleman Director Acquired A 1,110 $0.00 $0 12,587 Direct
16 Jul, 2026 Kelly S. Gast Director Acquired A 1,110 $0.00 $0 8,981 Direct
16 Jul, 2026 Anil Seetharam Director Acquired A 1,782 $0.00 $0 16,240 Direct
12 Jun, 2026 D. Scott Barbour Director, Officer Disposed J 511 $135.72 $69.35K 0 Indirect
12 Jun, 2026 D. Scott Barbour Director, Officer Acquired J 511 $135.72 $69.35K 53,652 Indirect
26 May, 2026 Craig J. Taylor Executive Vice President Acquired A 1,530 $0.00 $0 14,873 Direct
26 May, 2026 Tim A Makowski Officer Acquired A 847 $0.00 $0 6,722 Direct
26 May, 2026 Kevin C Talley Evp And Cao Acquired A 1,217 $0.00 $0 63,453 Direct
26 May, 2026 Patrick M. Jr Coyle Officer Acquired A 1,252 $0.00 $0 10,065 Direct
26 May, 2026 D. Scott Barbour Director, Officer Acquired A 9,036 $0.00 $0 77,268 Direct
26 May, 2026 Scott A Cottrill Evp, Cfo And Secretary Acquired A 2,503 $0.00 $0 110,511 Direct
26 May, 2026 Brian W. King Executive Vice President Acquired A 950 $0.00 $0 21,686 Direct
26 May, 2026 Bret Martz Officer Acquired A 1,252 $0.00 $0 3,089 Direct
26 May, 2026 Craig J. Taylor Executive Vice President Acquired A 3,406 $0.00 $0 3,406 Direct