About Us

About Us

Diana Beil

Director of Regulatory Affairs

Diana Beil spring 2016Diana Beil is director of regulatory affairs for Columbia Gas of Ohio. In her role, Diana has financial oversight of all regulatory filings on behalf of Columbia, including infrastructure replacement, safety initiatives, customer assistance, financing applications and other accounting and capital projects. 

She joined Columbia’s parent company NiSource in 2010 as a member of the SEC Financial Reporting team, where she managed the planning, compilation and review of all SEC filings. Diana transitioned to the Columbia regulatory group in December 2015. Prior to joining NiSource, she worked for Crowe Horwath LLP in its financial institutions audit practice.

A Certified Public Accountant, Diana is a member of the Ohio Society of Certified Public Accountants, the American Institute of Certified Public Accountants and the Leadership NiSource class of 2017. She also volunteers at the Ronald McDonald House of Central Ohio and serves as a member of the Red Shoe Society. 

Diana holds a bachelor’s degree in accounting from Miami University and resides in Upper Arlington with her husband, Brendan.