Ex-dividend in 3d · $0.20
Advanced Drainage Systems
Makes thermoplastic stormwater and onsite wastewater systems through an integrated production and distribution network.
$137.67
After-hours close+0.59 (+0.43%)
At close$137.08(−1.25%)
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Breakdown13F · Form 4
Institutions 108.92%Insiders 0.74%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 76.65M · Float 71.20M · 92.9% free float
Institutions13F, as of Jun 30, 2026
562 holders · 83.48M shares · 63 new positions · 264 increased · 204 reduced · 90 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 7.47M | 9.75% | +47.2K | Aug 7, 2026 |
| Vanguard Portfolio Management LLC | 3.71M | 4.83% | +89.9K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 3.40M | 4.43% | −26.7K | Aug 13, 2026 |
| State Street Corp | 2.69M | 3.51% | +204.1K | Aug 7, 2026 |
| First Trust Advisors LP | 2.66M | 3.47% | +616.7K | Aug 11, 2026 |
| UBS Asset Management Americas Inc | 2.35M | 3.06% | −103.5K | Aug 13, 2026 |
| Impax Asset Management Group PLC | 1.85M | 2.41% | −81.6K | Aug 11, 2026 |
| Baillie Gifford & Co | 1.84M | 2.39% | −212.1K | Aug 6, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 8.90% | 6.89M | 13G | Jul 17, 2025 ↗ |
| Advanced Drainage Systems Inc. Employee Stock Ownership Plan Trust | 6.00% | 4.63M | 13G | Feb 13, 2026 ↗ |
| Vanguard Capital Management | 5.10% | 3.98M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| D. Scott Barbour | director, officer: See Remarks | 128.9K | 0.17% | Aug 24, 2026 |
| Scott A. Cottrill | officer: EVP, CFO AND SECRETARY | 110.5K | 0.14% | May 28, 2026 |
| Kevin C. Talley | officer: EVP and CAO | 63.5K | 0.08% | May 28, 2026 |
| Robert M. Eversole | director | 53.7K | 0.07% | Jul 20, 2026 |
| Tanya D. Fratto | director | 30.6K | 0.04% | Jul 20, 2026 |
| De La Mesa Manuel J. Perez | director | 25.1K | 0.03% | Jul 20, 2026 |
| Brian W. King | officer: Executive Vice President | 21.7K | 0.03% | May 28, 2026 |
| Thomas J. Sr. Waun | officer: EVP, International | 18.4K | 0.02% | May 27, 2026 |
| Alexander R. Fischer | director | 17.6K | 0.02% | Jul 20, 2026 |
| Anil Seetharam | director | 16.2K | 0.02% | Jul 20, 2026 |
4 ten-percent owners hold 9.84M shares by Form 4, outside the officers-and-directors figure above · 12 people have not refiled in the last 18 months (1.58M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Dec 3, 2025 | Robert M. Eversoledirector | Sale | 10,569 | $152.82 | 50,076 |
| Nov 26, 2025 | Thomas J. Sr. Waunofficer: EVP, International | Sale | 1,500 | $155.00 | 13,470 |
| Nov 12, 2025 | Tim A. Makowskiofficer: See Remarks | Sale · 2 lots | 4,901 | $149.21 | 2,467 |
| Nov 12, 2025 | D. Scott Barbourdirector, officer: See Remarks | Sale · 3 lots | 80,030 | $148.95 | 42,867 |
| Nov 11, 2025 | Thomas J. Sr. Waunofficer: EVP, International | Sale | 1,272 | $148.30 | 797 |
| Nov 12, 2025 | Thomas J. Sr. Waunofficer: EVP, International | Sale | 1,000 | $150.00 | 14,970 |
CongressHouse and Senate disclosures
Not reported.