Reputation Management & Employee Mobilization

PREMIER REGULATED UTILITY BUSINESS SIGNIFICANT SCALE ACROSS SEVEN STATES COLUMBIA GAS OF KENTUCKY ~3.5M Gas Customers ~500K Electric Customers ~8,000 Employees COLUMBIA GAS OF MARYLAND COLUMBIA GAS OF MASSACHUSETTS NATURAL GAS COLUMBIA GAS OF OHIO COLUMBIA GAS OF PENNSYLVANIA COLUMBIA GAS OF VIRGINIA NIPSCO GAS ELECTRIC NIPSCO ELECTRIC NI LISTED NYSE COMPELLING ANNUAL 8%-10% TOTAL SHAREHOLDER RETURN PROPOSITION* Delivering on Commitments to Customers, Communities, Employees and Investors * Estimated total shareholder return at a constant P/E ratio

Reputation Management Enhancements Benchmarking Shifting our Content Strategy Enabling Employees to Support Reputation Efforts Tools Framework

Reputation Institute – RepTrack Pulse Survey 2017 Rank Sector RepTrak® Pulse 1 Consumer 76.5 2 Food & Beverage 75.5 3 Transport 74.3 4 Automotive 74.0 5 Airlines 73.3 6 Industrial 72.4 7 Retail 8 Technology 71.8 9 Information 10 Pharmaceuticals 71.6 11 Hospitality 12 Insurance 70.6 13 Services 14 UTILITIES 69.6 15 Financial 16 Healthcare 67.3 17 Telecommunication 65.3 18 Energy 59.7 Utilities Reputation Score by Region [2017] 69.4 69.2 73.0 Midwest Northeast West 70.5 South

Reputation Institute – RepTrack Pulse Survey 2017 2017 U.S. RepTrak® Reputation Drivers: Utilities 2017 U.S. RepTrak® Utility Reputation Dimension Scores 77.8 72.9 69.9 72.0 70.0 70.5 71.7 74.2 n: 2,350 15.0% 13.7% 12.8% 16.3% 15.3% 12.4% 14.5% 69.6 Reputation Research Reinforces AGA Natural Gas Perception Work

Content Marketing Honeycomb

Building our Reputation Through a FOCUSED CONTENT STRATEGY Telling Our Story Bringing Our Company to Life Multi-Channel, Multi-Media Approach to Content Themes and Positioning – Integrated Approach SAFETY | CUSTOMER VALUE | FINANCIAL | TALENT/CULTURE SAFETY CUSTOMER VALUE FINANCIAL TALENT & CULTURE Value of our products Customer programs and experience Environmental stewardship Innovation in safety Safety leadership Earnings/dividend growth/TSR Long-term visibility of business plan I&D progress Best place to work Corporate citizenship

Our New Structure – Content First Content Strategy Brand Communications, Design Center Of Excellence Multi-Media/Multi-Channel Storytelling Reputation Management Financial/Corporate Reports Crisis Communications & Issue Management Thought Leadership & Media Relations Foundation/Charitable Giving Strategy Political Action Committee Senior Leadership Communications Business Partner Communications Support & Counsel Executive/Strategic Counsel & Communications Channel Strategy Channel Alignment – Internal & External Customer Communications – Email/Website Analytics & Insight

Employee Mobilization Working Framework Thought Leaders Advisors Educators All Employees ALL EMPLOYEES All employees serve as brand ambassadors to share our NiSource story proudly by understanding the stakeholder commitments and their role in serving our customers and as part of the energy industry. EDUCATORS Educators engage in conversations about the energy industry and our company in their personal networks by actively sharing approved content and perspectives. ADVISORS Advisors strengthen our brand and build awareness as they engage in our community and with key stakeholders in conversations, meetings, presentations and educational programs. THOUGHT LEADERS Thought leaders are subject matter experts positioned strategically on identified topics to build our reputation and provide expertise on issues impacting our company and industry. Working Draft - 8/18/2017