NiSource to Release Financial Results and Host Conference Call on February 21

MERRILLVILLE, Ind.--(BUSINESS WIRE)-- NiSource Inc. (NYSE: NI) today announced that the company will host a conference call at 11 a.m. ET (10 a.m. CT) on Wednesday, February 21, 2024, to review its fourth quarter 2023 financial results and provide a general business update. NiSource will release its fourth quarter 2023 financial results before U.S. financial markets open on February 21.

All interested parties may listen to the conference call live on February 21 by logging onto the NiSource website at www.nisource.com. A link on the home page will provide access to the webcast and news release.

A replay of the call will be available beginning at 2 p.m. ET on February 21 through 11:59 p.m. ET on February 28, 2024. To access the recording, call (800) 770-2030 and enter conference ID 28323. For international participants to hear the replay, please dial (647) 362-9199, and enter the same conference ID. A recording of the call will be archived on the NiSource website.

About NiSource

NiSource Inc. (NYSE: NI) is one of the largest fully-regulated utility companies in the United States, serving approximately 3.3 million natural gas customers and 500,000 electric customers across six states through its local Columbia Gas and NIPSCO brands. The mission of our approximately 7,200 employees is to deliver safe, reliable energy that drives value to our customers. NiSource is a member of the Dow Jones Sustainability - North America Index, has been named as one of TIME Magazine’s World’s Best Companies and is on Forbes list of America’s Best Employers for Diversity. Learn more about NiSource’s record of leadership in sustainability, investments in the communities it serves and how we live our vision to be an innovative and trusted energy partner at www.NiSource.com. NI-F

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Media

Lynne Evosevich

Corporate Media Relations

(724) 288-1611

levosevich@nisource.com

Investors

Christopher Turnure

Investor Relations

(614) 404-9426

cturnure@nisource.com

Michael Weisenburger

Investor Relations

(614) 202-2595

mweisenburger@nisource.com

Source: NiSource Inc.