Advanced Drainage Systems, Inc. (WMS) Insider Ownership

Historic Insider Ownership Trends

As of April 22, 2026, the three largest insider holders of WMS are Partners Holdings Llc Berkshire (TenPercentOwner, 6.43Mn shares), D. Scott Barbour (President And Chief Executive, 163.10K shares), Roy E. Jr. Moore (Executive Vice President, 133.97K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Partners Holdings Llc Berkshire - 62,107 6,367,265 16 Dec, 2021
D. Scott Barbour President And Chief Executive 0 163,096 17 Mar, 2026
Roy E. Jr. Moore Executive Vice President 133,967 0 23 May, 2023
Robert M Klein Evp, Sales 102,070 0 29 May, 2024
Scott A Cottrill Evp, Cfo And Secretary 99,153 0 23 May, 2025
D. Scott Barbour President And Chief Executive 0 75,500 12 Mar, 2025
Ross M Jones - 70,749 0 24 Jul, 2023
D. Scott Barbour - 0 58,367 26 Nov, 2025
Kevin C Talley Evp And Cao 56,939 0 23 May, 2025
Robert M Eversole - 0 49,076 05 Dec, 2025
D. Scott Barbour President Ceo 41,067 0 26 Nov, 2025
Tanya D Fratto - 29,442 0 21 Jul, 2025
Brian W. King Executive Vice President 16,692 0 23 May, 2025
Alexander R Fischer - 16,454 0 21 Jul, 2025
Anil Seetharam - 14,458 0 21 Jul, 2025
Thomas J. Sr. Waun Evp, International 13,470 0 01 Dec, 2025
Michael B. Coleman - 11,477 0 04 Dec, 2025
Craig J. Taylor Executive Vice President 9,743 0 27 May, 2025
Mark Haney - 8,196 0 21 Jul, 2025
Kelly S. Gast - 7,871 0 21 Jul, 2025
Michael G. Huebert Executive Vice President 7,225 0 03 Jun, 2024
Darin S. Harvey Evp, Supply Chain Logistics 2,890 0 11 Jun, 2025
Tim A Makowski - 2,467 0 13 Nov, 2025
Robert M Eversole - 2,386 0 12 Nov, 2025
Bret Martz - 1,951 0 19 Mar, 2026
Anil Seetharam - 0 1,940 18 Aug, 2022
Anil Seetharam - 0 1,196 09 Mar, 2023
Thomas J. Sr. Waun Evp, International 0 797 13 Nov, 2025
D. Scott Barbour - 0 511 06 Mar, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
17 Mar, 2026 Bret Martz Common Stock D 107 $139.85 1,951 D J
13 Mar, 2026 D. Scott Barbour Common Stock D 7,150 $0.00 53,141 I G
13 Mar, 2026 D. Scott Barbour Common Stock A 7,150 $0.00 109,955 I G
04 Mar, 2026 D. Scott Barbour Common Stock D 511 $0.00 0 I G
04 Mar, 2026 D. Scott Barbour Common Stock A 511 $0.00 511 I G
03 Dec, 2025 Robert M Eversole Common Stock D 10,569 $152.82 50,076 I S
05 Dec, 2025 Robert M Eversole Common Stock D 1,000 $0.00 49,076 I G
02 Dec, 2025 Michael B. Coleman Common Stock D 102 $0.00 11,579 D G
02 Dec, 2025 Michael B. Coleman Common Stock D 34 $0.00 11,545 D G
02 Dec, 2025 Michael B. Coleman Common Stock D 68 $0.00 11,477 D G
26 Nov, 2025 Thomas J. Sr. Waun Common Stock D 1,500 $155.00 13,470 D S
25 Nov, 2025 D. Scott Barbour Common Stock D 1,800 $0.00 41,067 D G
25 Nov, 2025 D. Scott Barbour Common Stock D 14,500 $0.00 11,867 I G
25 Nov, 2025 D. Scott Barbour Common Stock A 14,500 $0.00 83,991 I G
25 Nov, 2025 D. Scott Barbour Common Stock D 46,500 $0.00 37,491 I G
25 Nov, 2025 D. Scott Barbour Common Stock A 46,500 $0.00 46,500 I G
11 Nov, 2025 Thomas J. Sr. Waun Common Stock D 1,272 $148.30 797 I S
12 Nov, 2025 D. Scott Barbour Common Stock A 80,030 $25.75 122,897 D M
12 Nov, 2025 Tim A Makowski Common Stock D 4,800 $149.21 2,568 D S
12 Nov, 2025 Thomas J. Sr. Waun Common Stock D 1,000 $150.00 14,970 D S