Prospectus and Additional Information An amended and restated preliminary short form prospectus containing important information relating to the securities described in this presentation has not yet been filed with the securities regulatory authorities in each of the provinces and territories of Canada. A copy of the amended and restated preliminary short form prospectus is required to be delivered to any investor that received this presentation and expressed an interest in acquiring the securities. There will not be any sale or any acceptance of an offer to buy the securities until a receipt for the final short form prospectus has been issued. This presentation does not provide full disclosure of all material facts relating to the securities offered. Investors should read the amended and restated preliminary short form prospectus, final short form prospectus and any amendment, for disclosure of those facts, especially risk factors relating to the securities offered, before making an investment decision. The issuer has filed a registration statement (including a prospectus) with the Securities and Exchange Commission (SEC) for the offering to which this communication relates. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. The issuer has also filed the prospectus relating to the offering with each of the provincial and territorial securities regulatory authorities in Canada. You may get any of these documents for free by visiting EDGAR on the SEC website at www.sec.gov or via SEDAR at www.sedar.com. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it in the U.S. from TD Securities (USA) LLC (tel: 212-827-7392), 31 W 52nd Street, New York NY 10019, BMO Capital Markets Corp., Attn: Equity Syndicate Department, 3 Times Square,25th Floor, New York, NY 10036 (tel: 800-414-3627; email: firstname.lastname@example.org) or RBC Capital Markets, LLC, 200 Vesey Street, 8th Floor, New York, NY 10281-8098, Attention: Equity Syndicate, (tel: 877-822-4089; Email: email@example.com), or in Canada from TD Securities Inc., Attention: Symcor, NPM (tel: 289-360-2009, email: firstname.lastname@example.org), 1625 Tech Avenue, Mississauga ON L4W 5P5, BMO Capital Markets, Brampton Distribution Centre C/O The Data Group of Companies, 9195 Torbram Road, Brampton, Ontario, L6S 6H2 (tel: 905-791-3151 Ext 4312; email: email@example.com) or RBC Dominion Securities Inc., Attn: Simon Yeung, Distribution Centre, RBC Wellington Square, 8th Floor, 180 Wellington St. W., Toronto, Ontario, M5J 0C2 (tel: 416-842-5349; E-mail: Distribution.RBCDS@rbccm.com). Additional Information and Where to Find it: In connection with the proposed acquisition of the outstanding common units of Columbia Pipeline Partners LP (CPPL), CPPL will file with the SEC a proxy statement with respect to a special meeting of its unitholders to be convened to approve the transaction. The definitive proxy statement will be mailed to the unitholders of CPPL. INVESTORS ARE URGED TO READ THE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE TRANSACTION. Investors will be able to obtain these materials, when they are available, and other documents filed with the SEC free of charge at the SECs website, www.sec.gov. In addition, copies of the proxy statement, when available, may be obtained free of charge by accessing CPPLs website at www.columbiapipelinepartners.com or by writing CPPL at 5151 San Felipe Street, Suite 2500, Houston, Texas 77056, Attention: Corporate Secretary. Investors may also read and copy any reports, statements and other information filed by CPPL with the SEC, at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 or visit the SECs website for further information on its public reference room. Participants in the Merger Solicitation Columbia Pipeline Group, Inc. (Columbia), an indirect wholly owned subsidiary of the Company, and certain of its directors, executive officers and other members of management and employees may be deemed to be participants in the solicitation of proxies in respect of the transaction. Information regarding Columbias directors and executive officers is available in its Current Report on Form 8-K filed with the SEC on July 1, 2016. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the proxy statement and other relevant materials to be filed with the SEC when they become available.