MUELLER WATER PRODUCTS, INC. 32,280,000 SHARES OF SERIES A COMMON STOCK Underwriting Agreement dated September 17, 2009Underwriting Agreement • September 22nd, 2009 • Mueller Water Products, Inc. • Miscellaneous fabricated metal products • New York
undersigned (or such spouse or family member), or publicly announce an intention to do any of the foregoing, for a period commencing on the date hereof and continuing through the close of trading on the date 90 days after the date of the Prospectus (the “Lock-Up Period”). In addition, the undersigned agrees that, without the prior written consent of each of Merrill Lynch, Pierce, Fenner & Smith Incorporated and Goldman, Sachs & Co. (which consent may be withheld at the sole discretion of Merrill Lynch, Pierce, Fenner & Smith Incorporated and Goldman, Sachs & Co., respectively), it will not, during the Lock-Up Period, make any demand for or exercise any right with respect to, the registration of any shares of Series A Common Stock or any security convertible into or exercisable or exchangeable for Series A Common Stock.
