NI

SEC source: 0001127602-24-007851 · form4.xml · nonDerivative · entry 1

Cuccia Kimberly S · CIK 0001900971 · SVP, GC & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,891

F1 · shares: Vesting of non-derivative performance stock units granted in 2021, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

SEC source: 0001127602-24-007841 · form4.xml · nonDerivative · entry 5

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,454

F5 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the 2021 Restricted Stock Unit award.

SEC source: 0001127602-24-007841 · form4.xml · nonDerivative · entry 4

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,305

F4 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the special performance stock units above.

SEC source: 0001127602-24-007841 · form4.xml · nonDerivative · entry 3

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,243

F3 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the performance stock units above.

SEC source: 0001127602-24-007841 · form4.xml · nonDerivative · entry 2

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,689

F2 · shares: Vesting of non-derivative special performance stock units granted in 2021, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

SEC source: 0001127602-24-007841 · form4.xml · nonDerivative · entry 1

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,327

F1 · shares: Vesting of non-derivative performance stock units granted in 2021, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

SEC source: 0001127602-24-007836 · form4.xml · nonDerivative · entry 5

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 171,185.261

F5 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the 2021 Restricted Stock Unit award.

F6 · balance_after: Includes shares acquired through dividend reinvestments.

SEC source: 0001127602-24-007836 · form4.xml · nonDerivative · entry 4

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 173,099.261

F4 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the special performance stock units above.

SEC source: 0001127602-24-007836 · form4.xml · nonDerivative · entry 3

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 174,590.261

F3 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the performance stock units above.

SEC source: 0001127602-24-007836 · form4.xml · nonDerivative · entry 2

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,757.261

F2 · shares: Vesting of non-derivative special performance stock units granted in 2021, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

SEC source: 0001127602-24-007836 · form4.xml · nonDerivative · entry 1

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 178,278.261

F1 · shares: Vesting of non-derivative performance stock units granted in 2021, which are exempt from liability under Section 16(b) of the Securities Exchange Act pursuant to rule 16b-3(d).

SEC source: 0001127602-24-002914 · form4.xml · nonDerivative · entry 1

Brown Donald Eugene · CIK 0001638426 · EVP & Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 186,995

F1 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the vesting of the 2020 Special Restricted Stock Unit award.

SEC source: 0001127602-24-002321 · form4.xml · nonDerivative · entry 1

Yates Lloyd M · CIK 0001311411 · Director · Director and President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 194,018.401

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 27, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

F2 · balance_after: Includes shares acquired through the NiSource Inc. Employee Stock Purchase Plan through December 31, 2023.

SEC source: 0001127602-24-002332 · form4.xml · nonDerivative · entry 2

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,611.099

F2 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will vest 33% on January 24, 2025, 33% on January 24, 2026, and 34% on January 24, 2027, provided that the reporting person is continuously employed by the Company through and including those dates.

F3 · balance_after: Includes shares acquired through dividend reinvestments.

SEC source: 0001127602-24-002332 · form4.xml · nonDerivative · entry 1

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,183.099

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002331 · form4.xml · nonDerivative · entry 1

Birmingham Melody · CIK 0001861336 · EVP & President NI Utilities

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,388.548

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

F2 · balance_after: Includes shares acquired through dividend reinvestments.

SEC source: 0001127602-24-002330 · form4.xml · nonDerivative · entry 1

Brown Donald Eugene · CIK 0001638426 · EVP & Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 197,627

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002329 · form4.xml · nonDerivative · entry 1

Jefferson William Jr. · CIK 0001935312 · EVP Operations & CSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,075

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002328 · form4.xml · nonDerivative · entry 1

Luhrs Michael · CIK 0001921786 · EVP, Strategy & Risk & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,823.632

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027 provided that the reporting person is continuously employed by the Company through and including that date.

F2 · balance_after: Includes shares acquired through the NiSource Inc. Employee Stock Purchase Plan through December 31, 2023.

SEC source: 0001127602-24-002327 · form4.xml · nonDerivative · entry 1

Berman Melanie B. · CIK 0001933743 · SVP & CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,523.9347

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027 provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002326 · form4.xml · nonDerivative · entry 1

Cuccia Kimberly S · CIK 0001900971 · SVP, GC & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,654

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002324 · form4.xml · nonDerivative · entry 1

Hooper Michael · CIK 0001813660 · SVP and President, NIPSCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,634

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027, provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-002323 · form4.xml · nonDerivative · entry 1

Gode Gunnar · CIK 0001770544 · VP & Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,103

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on February 26, 2027 provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-24-000620 · form4.xml · nonDerivative · entry 1

Cuccia Kimberly S · CIK 0001900971 · SVP, GC & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,229

F1 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the partial vesting of the 2021 Special Restricted Stock Unit award.

SEC source: 0001127602-24-000990 · form4a.xml · nonDerivative · entry 1

Cuccia Kimberly S · CIK 0001900971 · SVP, GC & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,229

F1 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the partial vesting of the 2021 Special Restricted Stock Unit award.

F2 · price: Amending the stock price which was reported incorrectly due to administrative error.

SEC source: 0001127602-23-028475 · form4.xml · nonDerivative · entry 1

Jesanis Michael E · CIK 0001434733 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,070.467

SEC source: 0001127602-23-023230 · form4.xml · nonDerivative · entry 1

Yates Lloyd M · CIK 0001311411 · Director · Director and President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,242.475

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.31 to $26.54, inclusive. The reporting person undertakes to provide to NiSource Inc., any security holder of NiSource Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-022238 · form4.xml · nonDerivative · entry 1

Brown Donald Eugene · CIK 0001638426 · EVP & Chief Innovation Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 187,278

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.51 to $26.91, inclusive. The reporting person undertakes to provide to NiSource Inc., any security holder of NiSource Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001127602-23-022237 · form4.xml · nonDerivative · entry 1

Birmingham Melody · CIK 0001861336 · EVP & President NI Utilities

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,259

SEC source: 0001127602-23-022199 · form4.xml · nonDerivative · entry 1

Jefferson William Jr. · CIK 0001935312 · EVP Operations & CSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,905

SEC source: 0001127602-23-020250 · form4.xml · nonDerivative · entry 1

Jefferson William Jr. · CIK 0001935312 · EVP Operations & CSO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,780

F1 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the partial vesting of the 2022 Special Restricted Stock Unit award.

SEC source: 0001127602-23-020246 · form4.xml · nonDerivative · entry 1

Birmingham Melody · CIK 0001861336 · EVP & President NI Utilities

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,644

F1 · shares: Number of shares reported represent shares withheld to satisfy tax withholding obligations in connection with the partial vesting of the 2022 Special Restricted Stock Unit award.

SEC source: 0001127602-23-016884 · form4.xml · nonDerivative · entry 1

Candris Aristides S · CIK 0001547949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,437.456

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016882 · form4.xml · nonDerivative · entry 1

BUTLER ERIC L · CIK 0001544184 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,798.112

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016881 · form4.xml · nonDerivative · entry 1

Lee Cassandra S. · CIK 0001851009 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,007.88

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016880 · form4.xml · nonDerivative · entry 1

KABAT KEVIN T · CIK 0001024525 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,561.284

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016878 · form4.xml · nonDerivative · entry 1

JOHNSON WILLIAM D · CIK 0001183048 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,510.438

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016877 · form4.xml · nonDerivative · entry 1

Jesanis Michael E · CIK 0001434733 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,955.036

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016876 · form4.xml · nonDerivative · entry 1

Hersman Deborah · CIK 0001778660 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,713.693

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016875 · form4.xml · nonDerivative · entry 1

HENRETTA DEBORAH A · CIK 0001282881 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,187.296

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016873 · form4.xml · nonDerivative · entry 1

Candris Aristides S · CIK 0001547949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,437.456

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016871 · form4.xml · nonDerivative · entry 1

Bunting Theodore H JR · CIK 0001399319 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,906.387

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016869 · form4.xml · nonDerivative · entry 1

Barbour Sondra L · CIK 0001573610 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,212.541

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-016868 · form4.xml · nonDerivative · entry 1

ALTABEF PETER · CIK 0001199359 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,721.249

F1 · shares: Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the last day of the director's annual term for which the RSUs are awarded, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

F2 · balance_after: This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

SEC source: 0001127602-23-015114 · form4.xml · nonDerivative · entry 1

Cuccia Kimberly S · CIK 0001900971 · SVP, GC & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,329

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.50 to $28.58, inclusive. The reporting person undertakes to provide to NiSource Inc., any security holder of NiSource Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001127602-23-011513 · form4.xml · nonDerivative · entry 1

Anderson Shawn · CIK 0001813738 · EVP & CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,723.576

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on March 27, 2026 provided that the reporting person is continuously employed by the Company through and including that date.

F2 · balance_after: Includes shares acquired through dividend reinvestments.

SEC source: 0001127602-23-011512 · form4.xml · nonDerivative · entry 2

Luhrs Michael · CIK 0001921786 · EVP, Strategy & Risk & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,485

F2 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on March 27, 2025 provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-23-011512 · form4.xml · nonDerivative · entry 1

Luhrs Michael · CIK 0001921786 · EVP, Strategy & Risk & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,394

F1 · shares: Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on March 27, 2026 provided that the reporting person is continuously employed by the Company through and including that date.

SEC source: 0001127602-23-011576 · form4a.xml · nonDerivative · entry 1

Luhrs Michael · CIK 0001921786 · EVP, Strategy & Risk & CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,133

F1 · shares: Amends the number of Restricted Stock Units ("RSUs") reported on the reporting person's Form 4 filed on March 28, 2023. Due to an administrative error the number of RSUs reported on the reporting person's Form 4 filed on March 28, 2023 was underreported by 739 shares. Each RSU represents a contingent right to receive one share of the Company's common stock pursuant to the NiSource Inc. 2020 Omnibus Incentive Plan. Subject to certain forfeiture conditions, the RSUs will 100% vest on March 27, 2026 provided the officer is continuously employed by the Company through and including that date. After considering this revision, the beneficial ownership total in column 5 is 19,224 shares.

SEC source: 0001127602-23-010704 · form4.xml · nonDerivative · entry 2

Berman Melanie B. · CIK 0001933743 · SVP & CHRO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,932.9347