Companies / Advanced Drainage Systems, Inc.

Advanced Drainage Systems, Inc.

NYSE: WMSCIK 1604028HILLIARD, OHads-pipe.com ↗

Financials · FY2026

Revenue$3.05B
Net income$428.77M
Total debt$1.60B
Cash$162.25M
Diluted EPS$5.44
Shares outstanding75.4M

Ownership

75.4M shares outstanding · as of Jul 30, 2026
0.36%Insiders
Ownership
Insiders0.36%274,118
10%+ / strategic103.13%77,764,487
Institutions94.28%71,093,706
Public float0.00%0

Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 3

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Insider% of sharesShares
Barbour D. ScottSee Remarks · Director
0.22%163,607
Cottrill Scott AEVP, CFO AND SECRETARY
0.15%110,511
Martz BretFormerSee Remarks
<0.01%1,951

Institutional holders 549

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HolderValue% of shares
BlackRock, Inc.$1.17B9.91%
Vanguard Group Inc$1.07B9.83%
State Street Corporation$422.80M3.57%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$370.09M3.39%
Impax Asset Management Group plc$299.32M2.74%
BAILLIE GIFFORD &amp; CO$280.75M2.72%
First Trust Advisors LP$280.30M2.71%
Morgan Stanley$247.68M2.27%
Pictet Asset Management Holding SA$240.23M2.20%
American Century Companies Inc$219.26M2.01%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
May 22, 2026Cottrill Scott A
Executive
OtherCommon Stock$80.3K-604
-0.56%
108,008
0.14% of shares
low
May 20, 2026Cottrill Scott A
Executive
OtherCommon Stock$46.4K-339
-0.34%
98,537
0.13% of shares
low
May 19, 2026Cottrill Scott A
Executive
OtherCommon Stock$36.5K-277
-0.28%
98,876
0.13% of shares
low
Mar 17, 2026Martz Bret
Executive
OtherCommon Stock$15.0K-107
-5.20%
1,951
<0.01% of shares
low
May 26, 2026Cottrill Scott A
Executive
GrantCommon Stock$0+3K
+2.32%
110,511
0.15% of shares
low
May 20, 2026Cottrill Scott A
Executive
GrantCommon Stock$0+10K
+10.22%
108,612
0.14% of shares
low
Mar 13, 2026Barbour D. Scott
Executive
GiftCommon Stock$0+7K
+6.95%
109,955
0.15% of shares
low
Mar 13, 2026Barbour D. Scott
Executive
GiftCommon Stock$0-7K
-11.86%
53,141
0.07% of shares
low

5%+ ownership events

Schedule 13D / 13G
FilerStance% of classSharesDate
Vanguard Group IncPassive13G/A—0—
Delaware Charter Guarantee & Trust CoPassive13G—77,764,487—

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
WMS——00790R104—