NISOURCE STAKEHOLDERS: As we present our 2017 Integrated Annual Report, I am proud to share the results of our relentless focus on delivering value for our customers and all our stakeholders. We are continuing to create value across a set of operational, social and financial performance factors, and are more confident than ever that our well-established, customer- focused business strategy is sustainable for many years to come. Looking back, 2017 was a year of solid execution across all facets of our business plan. Here are just a few highlights: • Safety: We progressed on our safety journey, achieving our best-ever performance in our core employee safety metrics, as well as damage prevention. • Customer Service: Scores improved across all our companies. Notably, our Virginia subsidiary was recognized by J.D. Power as one of the nation’s top natural gas-only brands, and our electric business in Indiana was recognized as one of the most improved brands. • Investment: We invested a record $1.7 billion across our footprint, improving safety, reliability and environmental performance for our customers. • Talent and Culture: NiSource received national recognition from Forbes magazine, the Human Rights Campaign Foundation, the Ethisphere Institute and others. • Environment: We established aggressive environmental targets supported by our 1 JOE HAMROCK President & CEO NiSource Inc. SERVING NEARLY 4 MILLION NATURAL GAS AND ELECTRIC CUSTOMERS ACROSS SEVEN STATES UNDER OUR COLUMBIA GAS AND NIPSCO BRANDS. We employ approximately 8,000 of our neighbors who are engaged in the communities we serve, making them great places to live and call home.