Welcome to our dedicated page for ADVANCED DRAINAGE SYSTEMS SEC filings (Ticker: WMS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Advanced Drainage Systems, Inc. filings document material events, operating results, capital structure and governance actions for a NYSE-listed manufacturer of stormwater and onsite wastewater management products. Recent 8-K disclosures include quarterly results releases, Regulation FD presentation materials, dividend approvals and stock repurchase program updates.
The company's regulatory record also covers financing and material-agreement disclosures, including senior notes due 2034, subsidiary guarantees and refinancing-related capital structure matters. These filings describe how ADS reports debt instruments, shareholder returns, common stock registration, board-authorized capital actions and other events affecting its public-company obligations.
Advanced Drainage Systems, Inc. executive Brian W. King reported a routine tax-related share disposition. On 2026-05-22, 230 shares of common stock were withheld at $133.00 per share to satisfy his tax obligations tied to the vesting of restricted common stock.
After this tax-withholding disposition, King directly holds 20,736 shares of common stock and has an additional 1,778.1777 shares held indirectly through a KSOP allocation, which includes 89 shares acquired under the company’s Employee Stock Purchase Plan.
ADVANCED DRAINAGE SYSTEMS, INC. executive Thomas J. Waun Sr., EVP, International, reported a routine tax-withholding transaction related to equity compensation. On May 22, 2026, 218 shares of common stock were withheld at $133.00 per share to cover tax obligations from vesting restricted stock, not an open-market sale.
After this disposition, he directly holds 17,590 shares of common stock. He also has an indirect holding of 807.4087 shares through a KSOP account, which includes 89 shares acquired under the company’s Employee Stock Purchase Plan.
ADVANCED DRAINAGE SYSTEMS, INC. officer reports routine tax withholding related to equity vesting. On May 22, 2026, 112 shares of common stock were disposed of at $133.00 per share to satisfy tax obligations arising from the vesting of restricted common stock. This was a share withholding by the issuer, not an open-market sale, and is classified as a tax-withholding disposition.
After this event, the reporting person held 8,813.0000 common shares directly and 4,310.9080 shares indirectly through a KSOP allocation. No open‑market purchases or sales were reported in this filing.
ADVANCED DRAINAGE SYSTEMS, INC. executive Scott A. Cottrill reported routine equity compensation-related activity. On May 22, 2026, 604 shares of common stock were withheld at $133.00 per share to cover his tax obligations in connection with the vesting of restricted common stock, rather than an open-market sale. After this tax-withholding disposition, he directly held 108,008 shares of common stock and indirectly held 17,469.0329 shares through a KSOP allocation.
ADVANCED DRAINAGE SYSTEMS, INC. executive Thomas J. Waun Sr., EVP International, reported routine equity compensation and related tax withholding in company stock. On May 19, 2026, he acquired 4,555 shares of Common Stock at no cost through a grant of performance-based units earned under the company’s 2017 Omnibus Incentive Plan, including 63 shares of dividend equivalents settled in stock. To cover tax obligations tied to vesting of restricted stock and these awards, 217 shares in total were withheld by the issuer on May 19 and May 20 at prices of $131.59 and $136.83 per share, respectively; these withholdings are not open-market sales. After these transactions, Waun directly held 13,253 shares of Common Stock, which also include 89 shares acquired through the company’s Employee Stock Purchase Plan. Separately, an indirect holding of 807.4087 shares is allocated under a KSOP, reflecting retirement-plan related ownership.
ADVANCED DRAINAGE SYSTEMS, INC. Executive Vice President, CFO and Secretary Scott A. Cottrill reported equity compensation and related tax withholding transactions in company common stock. He received a grant of 10,075 shares of common stock at no cost, earned from performance-based units for a period ending March 31, 2026, including 130 shares from dividend equivalents.
To cover tax obligations tied to vesting, the issuer withheld 339 shares at $136.83 per share and 277 shares at $131.59 per share, which are not open-market sales. After these transactions he directly holds 108,612 shares of common stock and indirectly holds 17,469.0329 shares through a KSOP allocation, indicating these are routine compensation and tax-related entries rather than discretionary market trades.
ADVANCED DRAINAGE SYSTEMS, INC. officer Tim A. Makowski reported receiving 3,729 shares of common stock as a grant tied to performance-based units earned under the company’s 2017 Omnibus Incentive Plan, including 53 shares from dividend equivalents. The filing also shows 192 shares of common stock withheld at prices of $131.59 and $136.83 to satisfy tax obligations related to vesting of restricted common stock. In addition to his direct holdings, Makowski has 17,556.8712 shares of common stock indirectly held through a KSOP as of May 19, 2026.
ADVANCED DRAINAGE SYSTEMS, INC. officer Patrick M. Coyle Jr reported equity compensation and related tax withholding transactions in company common stock. He received a grant of 3,233 shares at no cost, earned from performance-based units under the company’s 2017 Omnibus Incentive Plan, including 47 dividend-equivalent shares settled in stock.
To cover tax obligations tied to vesting, the company withheld 91 shares at $131.59 per share and 64 shares at $136.83 per share. After these transactions, he holds 8,925 shares directly and 4,310.908 shares indirectly through a KSOP allocation.
ADVANCED DRAINAGE SYSTEMS, INC. Executive Vice President Brian W. King received a grant of 4,491 shares of common stock, earned from performance-based units under the company’s 2017 Omnibus Incentive Plan after performance goals for the period ended March 31, 2026 were met. The total includes 62 shares credited as dividend equivalents and is compensation-related rather than an open-market purchase.
To cover tax obligations tied to vesting of restricted stock, 116 shares were withheld at $131.59 per share and 101 shares were withheld at $136.83 per share. After these transactions, King directly holds 20,966 common shares and indirectly holds 1,778.1777 shares through a KSOP allocation.
ADVANCED DRAINAGE SYSTEMS, INC. director and officer D. Scott Barbour received a grant of 29,327 shares of common stock on May 20, 2026 as performance-based units earned under the company’s 2017 Omnibus Incentive Plan. The award includes 409 shares issued as dividend equivalents settled in common stock. To cover tax obligations related to vesting, a total of 2,064 shares were withheld, consisting of 1,130 shares at $136.83 per share on May 20, 2026 and 934 shares at $131.59 per share on May 19, 2026. After these transactions, Barbour holds 70,130 shares of common stock directly, along with additional indirect holdings through various trusts and plans, including 53,141 shares in a revocable trust for his benefit and 109,955 shares in an irrevocable trust.