Advanced Drainage Systems Announces Proposed Follow-on Offering of Common Stock

Advanced Drainage Systems, Inc. (NYSE: WMS) (“ADS” or the “Company”), a leading global manufacturer of water management products and solutions for commercial, residential, infrastructure and agricultural applications, today announced the launch of a proposed follow-on public offering of 10,000,000 shares of its common stock. All of such shares will be offered and sold by ASP ADS Investco, LLC (the “Selling Stockholder”), an affiliate of American Securities LLC, and the Selling Stockholder will receive all of the proceeds from such offering. The underwriters will have a 30-day option to purchase up to an additional 1,500,000 shares of common stock from the Selling Stockholder.

Barclays and Deutsche Bank Securities are acting as joint book-running managers and representatives of the underwriters for the proposed offering. Additional joint book-running managers for the proposed offering are RBC Capital Markets, BofA Merrill Lynch and Baird. The co-managers for the proposed offering are Fifth Third Securities and PNC Capital Markets LLC.

The proposed offering will be made only by means of a prospectus. When available, copies of the preliminary prospectus related to the offering may be obtained from Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, barclaysprospectus@broadridge.com, 888-603-5847; or from Deutsche Bank Securities Inc., Attention: Prospectus Group, 60 Wall Street, New York, New York 10005, +1 (800) 503-4611, prospectus.cpdg@db.com.

A registration statement relating to these securities has been filed with the U.S. Securities and Exchange Commission (the "SEC"). This press release shall not constitute an offer to sell or the solicitation of an offer to buy nor shall there be any sale of these shares in any state in which such offer, solicitation or sale would be unlawful, prior to registration or qualification under the securities laws of any state.

About ADS

Advanced Drainage Systems (ADS) is the leading manufacturer of high performance thermoplastic corrugated pipe, providing a comprehensive suite of water management products and superior drainage solutions for use in the construction and infrastructure marketplace. Its innovative products are used across a broad range of end markets and applications, including non-residential, residential, agriculture and infrastructure applications. The Company has established a leading position in many of these end markets by leveraging its national sales and distribution platform, its overall product breadth and scale and its manufacturing excellence. Founded in 1966, the Company operates a global network of 58 manufacturing plants and 29 distribution centers. To learn more about the ADS, please visit the Company’s website at www.ads-pipe.com.

Forward Looking Statements

Certain statements in this press release may be deemed to be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including statements regarding the proposed offering. These statements are not historical facts but rather are based on the Company’s current expectations, estimates and projections regarding the Company’s business, operations and other factors relating thereto. Words such as “may,” “will,” “could,” “would,” “should,” “anticipate,” “predict,” “potential,” “continue,” “expects,” “intends,” “plans,” “projects,” “believes,” “estimates” and similar expressions are used to identify these forward-looking statements. Factors that could cause actual results to differ from those reflected in forward-looking statements relating to our operations and business include: fluctuations in the price and availability of resins and other raw materials and our ability to pass any increased costs of raw materials on to our customers in a timely manner; volatility in general business and economic conditions in the markets in which we operate, including, without limitation, factors relating to availability of credit, interest rates, fluctuations in capital and business and consumer confidence; cyclicality and seasonality of the non-residential and residential construction markets and infrastructure spending; the risks of increasing competition in our existing and future markets, including competition from both manufacturers of high performance thermoplastic corrugated pipe and manufacturers of products using alternative materials; our ability to continue to convert current demand for concrete, steel and PVC pipe products into demand for our high performance thermoplastic corrugated pipe and Allied Products; the effect of weather or seasonality; the loss of any of our significant customers; the risks of doing business internationally; the risks of conducting a portion of our operations through joint ventures; our ability to expand into new geographic or product markets; our ability to achieve the acquisition component of our growth strategy; the risk associated with manufacturing processes; our ability to manage our assets; the risks associated with our product warranties; our ability to manage our supply purchasing and customer credit policies; the risks associated with our self-insured programs; our ability to control labor costs and to attract, train and retain highly-qualified employees and key personnel; our ability to protect our intellectual property rights; changes in laws and regulations, including environmental laws and regulations; our ability to project product mix; the risks associated with our current levels of indebtedness; our ability to meet future capital requirements and fund our liquidity needs; and the other risks and uncertainties described in the Company’s filings with the Securities and Exchange Commission. New risks and uncertainties emerge from time to time and it is not possible for the Company to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this press release. In light of the significant uncertainties inherent in the forward-looking information included herein, the inclusion of such information should not be regarded as a representation by the Company or any other person that the Company’s expectations, objectives or plans will be achieved in the timeframe anticipated or at all. Investors are cautioned not to place undue reliance on the Company’s forward-looking statements and the Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.