# EDGAR Filing Document

**Accession Number:** 0001111711
**File Stem:** 0001140361-26-011851
**Filing Date:** 2026-3
**Character Count:** 377020
**Document Hash:** a7a4a1703f37548e451cdde3cf12b445
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-011851.hdr.sgml**: 20260330

**ACCESSION NUMBER**: 0001140361-26-011851

**CONFORMED SUBMISSION TYPE**: DEF 14A

**PUBLIC DOCUMENT COUNT**: 54

**CONFORMED PERIOD OF REPORT**: 20260511

**FILED AS OF DATE**: 20260330

**DATE AS OF CHANGE**: 20260330

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NISOURCE INC.
- **CENTRAL INDEX KEY:** 0001111711
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 352108964
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEF 14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-16189
- **FILM NUMBER:** 26809865

**BUSINESS ADDRESS:**
- **STREET 1:** 801 EAST 86TH AVE
- **CITY:** MERRILLVILLE
- **STATE:** IN
- **ZIP:** 46410-6272
- **BUSINESS PHONE:** 2196475200

**MAIL ADDRESS:**
- **STREET 1:** 801 EAST 86TH AVE
- **CITY:** MERRILLVILLE
- **STATE:** IN
- **ZIP:** 46410-6272

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NISOURCE INC/DE
- **DATE OF NAME CHANGE:** 20001103

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NEW NISOURCE INC
- **DATE OF NAME CHANGE:** 20000412

?xml version='1.0' encoding='ASCII'?

#### **TABLE OF CONTENTS**

#### UNITED STATES

#### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### SCHEDULE 14A INFORMATION

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934

#### (Amendment No.)
<br> Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ <br>

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** 

&nbsp;&nbsp;&nbsp;&nbsp;☒ Definitive Proxy Statement

☐ Definitive Additional Materials

☐ Soliciting Material under Rule 14a-12

### NISOURCE INC.

#### (Name of Registrant as Specified In Its Charter)

#### (Name of Person(s) Filing Proxy Statement, if other than the registrant)
Payment of Filing Fee (Check the appropriate box):

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

------

#### **TABLE OF CONTENTS**
![](ny20055306x771_cover.jpg)

------

---

| | |
|:---|:---|
| ![](logo_nisource2.jpg)<br>| **NiSource Inc.** <br>**801 E. 86<sup>th</sup> Avenue** <br>**Merrillville, Indiana 46410** <br>(614) 460-6000 |

---

<br> Notice of Annual Meeting March 30, 2026 <br>

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**TIME AND DATE** | &nbsp;&nbsp;&nbsp;**WHERE** | &nbsp;&nbsp;&nbsp;**RECORD DATE**  |
| &nbsp;&nbsp;&nbsp;&nbsp;Monday May 11, 2026<br>10:30 a.m. Central Time | &nbsp;&nbsp;&nbsp;&nbsp;Virtual format only via live audio webcast <br>**www.virtualshareholdermeeting.com/NI2026** | &nbsp;&nbsp;&nbsp;&nbsp;Close of business on <br>March 16, 2026 |

---

To the Holders of Our Common Stock:

The 2026 annual meeting of stockholders (the "Annual Meeting") of NiSource Inc., a Delaware corporation, will be conducted in a virtual format only via live audio webcast on Monday, May 11, 2026, at 10:30 a.m. Central Time at www.virtualshareholdermeeting.com/NI2026, for the following purposes:

---

| | |
|:---|:---|
| 1 | To elect twelve directors named in the proxy statement to hold office until the next annual stockholders' meeting and until their respective successors have been elected or appointed and qualified;  |
| 2 | To approve the compensation of our named executive officers on an advisory basis;  |
| 3 | To ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for 2026; and  |
| To transact such other business as may properly come before the Annual Meeting and any adjournment or postponement thereof. | To transact such other business as may properly come before the Annual Meeting and any adjournment or postponement thereof. |

---

The Annual Meeting will be conducted in a virtual format only to provide access to all of our stockholders regardless of geographic location. There is no in-person meeting for you to attend. A virtual-only meeting enables increased stockholder attendance and participation, improves efficiency, and reduces costs. We designed the format of the Annual Meeting to ensure that our stockholders who attend the Annual Meeting will be afforded similar rights and opportunities to participate as they would at an in-person meeting.

All stockholders of record as of the close of business on March 16, 2026, are eligible to vote at the Annual Meeting and any adjournment or postponement thereof.

This year, we are pleased to continue to help protect the environment and save costs by using the "Notice and Access" method of delivery. Instead of receiving paper copies of our proxy materials in the mail, many stockholders will receive a Notice of Internet Availability of Proxy Materials (the "Notice").

**YOUR VOTE IS VERY IMPORTANT. Although you may vote during the Annual Meeting by following the instructions available on the meeting website, we urge you to submit your vote as soon as possible as instructed in the Notice, proxy card or voting instruction form. You can vote via mail, telephone or the Internet.**<br>

![](sig_cucciak.jpg)

#### Kimberly S. Cuccia

#### Executive Vice President,

#### General Counsel and Corporate Secretary
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

<br> Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be Held on May 11, 2026&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Proxy Statement, Notice of Annual Meeting and 2025 Annual Report to Stockholders are available at https://www.nisource.com/filings <br>

------

#### **TABLE OF CONTENTS**
**Table of Contents**

---

| | | |
|:---|:---|:---|
| **[1](#tPSS)** | **[PROXY STATEMENT SUMMARY](#tPSS)** | **[PROXY STATEMENT SUMMARY](#tPSS)** |
| **[5](#tPS)** | **[PROXY STATEMENT](#tPS)** | **[PROXY STATEMENT](#tPS)** |
|  | [5](#tPS1) | [Who May Vote](#tPS1) |
|  | [5](#tPS1) | [Voting Your Proxy](#tPS1) |
|  | [5](#tPS3) | [Discretionary Voting by Brokers and "Broker Non-Votes"](#tPS3) |
|  | [6](#tPS4) | [Voting Shares Held in Our 401(k) Plan](#tPS4) |
|  | [6](#tPS5) | [Attending and Voting During the Virtual Annual Meeting](#tPS5) |
|  | [6](#tPS6) | [Revoking Your Proxy](#tPS6) |
|  | [7](#tPS7) | [Quorum for the Meeting](#tPS7) |
| **[8](#tPROP1)** | **[PROPOSAL 1 – ELECTION OF DIRECTORS](#tPROP1)** | **[PROPOSAL 1 – ELECTION OF DIRECTORS](#tPROP1)** |
| **[22](#tCG)** | **[CORPORATE GOVERNANCE](#tCG)** | **[CORPORATE GOVERNANCE](#tCG)** |
|  | [22](#tCG1) | [Director Independence](#tCG1) |
|  | [22](#tCG2) | [Policies and Procedures with Respect to Transactions with Related Persons](#tCG2) |
|  | [23](#tCG3) | [Communications with the Board and ](#tCG3)<br>[Non-Management Directors](#tCG3) |
|  | [23](#tCG4) | [Stockholder Engagement](#tCG4) |
|  | [23](#tCG5) | [Code of Business Conduct](#tCG5) |
|  | [24](#tCG6) | [Corporate Governance Guidelines](#tCG6) |
|  | [24](#tCG7) | [Board Leadership Structure](#tCG7) |
|  | [24](#tCG8) | [Board Oversight of Risk](#tCG8) |
|  | [25](#tCG9) | [Oversight of Cybersecurity](#tCG9) |
|  | [25](#tCG10) | [Succession Planning](#tCG10) |
|  | [26](#tCG11) | [Meetings and Committees of the Board](#tCG11) |
|  | [26](#tCG12) | [Board Committee Composition](#tCG12) |
| **[31](#tDC1a)** | **[2025 DIRECTOR COMPENSATION](#tDC1a)** | **[2025 DIRECTOR COMPENSATION](#tDC1a)** |
| **[32](#tSOC)** | **[SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND ](#tSOC)**<br>**[MANAGEMENT](#tSOC)** | **[SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND ](#tSOC)**<br>**[MANAGEMENT](#tSOC)** |
| **[34](#tCDA)** | **[COMPENSATION DISCUSSION AND ANALYSIS ("CD&A")](#tCDA)** | **[COMPENSATION DISCUSSION AND ANALYSIS ("CD&A")](#tCDA)** |
|  | [34](#tEO) | [Executive Overview](#tEO) |
|  | [37](#tCEC) | [Components of 2025 Executive Compensation](#tCEC) |
|  | [43](#tEEC) | [Establishing Executive Compensation](#tEEC) |

---

---

| | | |
|:---|:---|:---|
| **[47](#tCAHC)** | **[COMPENSATION AND HUMAN CAPITAL COMMITTEE REPORT](#tCAHC)** | **[COMPENSATION AND HUMAN CAPITAL COMMITTEE REPORT](#tCAHC)** |
| **[48](#tCHC)** | **[COMPENSATION AND HUMAN CAPITAL COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION](#tCHC)** | **[COMPENSATION AND HUMAN CAPITAL COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION](#tCHC)** |
| **[48](#tAOR)** | **[ASSESSMENT OF RISK](#tAOR)** | **[ASSESSMENT OF RISK](#tAOR)** |
| **[49](#t2020EC)** | **[2025 EXECUTIVE COMPENSATION](#t2020EC)** | **[2025 EXECUTIVE COMPENSATION](#t2020EC)** |
|  | [49](#tSCT) | [2025 Summary Compensation Table](#tSCT) |
|  | [51](#tGOPB) | [2025 Grants of Plan-Based Awards](#tGOPB) |
|  | [52](#tOEA) | [Outstanding Equity Awards at 2025 Fiscal Year-End](#tOEA) |
|  | [54](#tOESV) | [2025 Option Exercises and Stock Vested](#tOESV) |
|  | [54](#tNQDC) | [2025 Non-Qualified Deferred Compensation](#tNQDC) |
|  | [55](#tPPUT) | [Potential Payments upon Termination ](#tPPUT)<br>[of Employment or a Change-in-Control ](#tPPUT)<br>[of the Company](#tPPUT) |
|  | [58](#tPR) | [Pay Ratio](#tPR) |
| **[59](#tPVP2023)** | **[2025 PAY VERSUS PERFORMANCE](#tPVP2023)** | **[2025 PAY VERSUS PERFORMANCE](#tPVP2023)** |
| **[64](#tECP)** | **[EQUITY COMPENSATION PLAN INFORMATION](#tECP)** | **[EQUITY COMPENSATION PLAN INFORMATION](#tECP)** |
| **[65](#tP2)** | **[PROPOSAL 2 – ADVISORY APPROVAL OF NEO COMPENSATION](#tP2)** | **[PROPOSAL 2 – ADVISORY APPROVAL OF NEO COMPENSATION](#tP2)** |
| **[66](#tP3)** | **[PROPOSAL 3 – RATIFICATION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM](#tP3)** | **[PROPOSAL 3 – RATIFICATION OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM](#tP3)** |
| **[67](#tACR)** | **[AUDIT COMMITTEE REPORT](#tACR)** | **[AUDIT COMMITTEE REPORT](#tACR)** |
| **[69](#tIRR)** | **[INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FEES](#tIRR)** | **[INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FEES](#tIRR)** |
| **[69](#tDS16)** | **[DELINQUENT SECTION 16(A) REPORTS](#tDS16)** | **[DELINQUENT SECTION 16(A) REPORTS](#tDS16)** |
| **[69](#tSPN)** | **[STOCKHOLDER PROPOSALS AND NOMINATIONS FOR 2027 ANNUAL MEETING](#tSPN)** | **[STOCKHOLDER PROPOSALS AND NOMINATIONS FOR 2027 ANNUAL MEETING](#tSPN)** |
| **[70](#tAR)** | **[FORM 10-K, ANNUAL REPORT AND FINANCIAL STATEMENTS](#tAR)** | **[FORM 10-K, ANNUAL REPORT AND FINANCIAL STATEMENTS](#tAR)** |
| **[70](#tAOF)** | **[AVAILABILITY OF PROXY MATERIALS](#tAOF)** | **[AVAILABILITY OF PROXY MATERIALS](#tAOF)** |
| **[70](#tMSS)** | **[MULTIPLE STOCKHOLDERS SHARING THE SAME ADDRESS — "HOUSEHOLDING"](#tMSS)** | **[MULTIPLE STOCKHOLDERS SHARING THE SAME ADDRESS — "HOUSEHOLDING"](#tMSS)** |
| **[71](#tOB)** | **[OTHER BUSINESS](#tOB)** | **[OTHER BUSINESS](#tOB)** |
|  | [71](#tCNR) | [Cautionary Note Regarding Forward-Looking Information](#tCNR) |
| **[A-1](#tAPPA)** | **[APPENDIX A](#tAPPA)** | **[APPENDIX A](#tAPPA)** |

---

<br> NISOURCE INC. 2026 PROXY STATEMENT <br>

------

## Proxy Statement Summary
This summary highlights information that may be expanded upon elsewhere in this proxy statement ("Proxy Statement"). This summary does not contain all of the information that you should consider, and you should read the entire Proxy Statement before voting. The accompanying proxy is solicited on behalf of the Board of Directors of NiSource Inc. (the "Board") for the 2026 annual meeting of stockholders (the "Annual Meeting").

2026 Annual Meeting of Stockholders

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**TIME AND DATE** | &nbsp;&nbsp;**WHERE** | &nbsp;&nbsp;**RECORD DATE**  |
| &nbsp;&nbsp;&nbsp;Monday, May 11, 2026<br>10:30 a.m. Central Time | &nbsp;&nbsp;&nbsp;Virtual format only via live audio webcast <br>**www.virtualshareholdermeeting.com/NI2026** | &nbsp;&nbsp;&nbsp;Close of business on <br>March 16, 2026 |

---

---

| | |
|:---|:---|
| **SHARES OF COMMON STOCK OUTSTANDING ON RECORD DATE:** | **479,357,787** |

---

---

| |
|:---|
| **VOTING**  |
| Each share is entitled to one vote for each director to be elected and on each matter to be voted upon at the Annual Meeting. |

---

This Proxy Statement and the accompanying proxy card are first being sent to stockholders on March 30, 2026.

WHO WE ARE

NiSource is one of the largest fully regulated utility companies in the United States, serving approximately 3.8 million natural gas and electric customers across six states, Indiana, Ohio, Pennsylvania, Maryland, Virginia and Kentucky, through our local Columbia Gas and NIPSCO brands. We are based in Merrillville, Indiana, and have approximately 7,700 employees focused on safely delivering reliable and affordable energy to our customers and the communities we serve. We have a vision to be a premier, innovative and trusted energy partner and we exist to deliver safe, reliable energy that drives value to our customers.

We use the terms "NiSource," the "Company," "we," "our" and "us" in this Proxy Statement to refer to NiSource Inc.

VOTING MATTERS AND BOARD RECOMMENDATIONS

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Proposal** |  | **Board Recommendations** | **Board Recommendations** | **Page Reference**  |
| 1 | To elect twelve directors named in this proxy statement to hold office until the next annual stockholders' meeting and until their respective successors have been elected or appointed and qualified. | ![](ny20055306x777_check1.jpg) | **FOR** <br>**ALL NOMINEES** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[8](#tPROP1) |
| 2 | To approve the compensation of our named executive officers (the "Named Executive Officers" or "NEOs") on an advisory basis. | ![](ny20055306x777_check1x2.jpg) | **FOR** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[65](#tP2) |
| 3 | To ratify the appointment of Deloitte & Touche LLP ("Deloitte") as our independent registered public accounting firm for 2026. | ![](ny20055306x777_check1.jpg) | **FOR** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[66](#tP3) |

---

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| | |
|:---|:---|
|  | **1** |
|  | **1** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

#### **TABLE OF CONTENTS**
    PROXY STATEMENT SUMMARY     <br>

BOARD OF DIRECTORS NOMINEES

#### Director Nominees (12)

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | | | **Board Committees**  | **Board Committees**  | **Board Committees**  | **Board Committees**  | **Board Committees**  | **Board Committees**  |
| <br>**Name and Position** | <br>**Age** | <br>**Director** <br>**Since** | **Audit** | **Compensation &** <br>**Human Capital** | **Finance** | **Nominating &** <br>**Governance** | **Safety Operations,** <br>**Regulatory & Policy** | **Executive**  |
| **Peter A. Altabef**<br>**Chair of the Board, Unisys Corporation** | 66 | 2017  |  | **CHAIR** |  | ![](ny20055306x777_check2.jpg) |  | ![](ny20055306x777_check2.jpg) |
| **Sondra L. Barbour**<br>**Retired EVP,**<br>**Lockhead Martin Corporation** | 63 | 2022  | **CHAIR** |  | ![](ny20055306x777_check2x2.jpg) |  |  | ![](ny20055306x777_check2x2.jpg) |
| **Theodore H. Bunting, Jr.**<br>**Retired Group President,**<br>**Entergy Corporation** | 67 | 2018  | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) |  |  |
| **Eric L. Butler**<br>**President and CEO, Aswani-**<br>**Butler Investment Associates** | 65 | 2017  |  |  | ![](ny20055306x777_check2x2.jpg) |  | ![](ny20055306x777_check2x2.jpg) |  |
| **Deborah A. Henretta**<br>**Partner, Council Advisors;**<br>**Retired Group President,**<br>**Procter & Gamble Co.** | 64 | 2015  |  | ![](ny20055306x777_check2.jpg) |  | **CHAIR** |  | ![](ny20055306x777_check2.jpg) |
| **Deborah A. P. Hersman**<br>**Retired Chair, National**<br>**Transportation Safety Board** | 55 | 2019  |  | ![](ny20055306x777_check2x2.jpg) |  |  | ![](ny20055306x777_check2x2.jpg)  |  |
| **Michael E. Jesanis**<br>**Retired President & CEO,**<br>**National Grid USA** | 69 | 2008  | ![](ny20055306x777_check2.jpg) |  | **CHAIR**  |  |  | ![](ny20055306x777_check2.jpg) |
| **William D. Johnson**<br>**Retired President & CEO,**<br>**Pacific Gas & Electric Corporation** | 72 | 2022  |  |  |  | ![](ny20055306x777_check2x2.jpg) | **CHAIR** | ![](ny20055306x777_check2x2.jpg) |
| **Kevin T. Kabat**<br>**Chair of the Board, NiSource Inc.**<br>**Retired CEO, Fifth Third Bancorp** | 69 | 2015  |  |  |  | ![](ny20055306x777_check2.jpg) |  | **CHAIR**  |
| **Cassandra S. Lee**<br>**Chief Financial Officer,**<br>**Mobility and Consumer**<br>**Wireline Segments, AT&T Inc.** | 57 | 2022  | ![](ny20055306x777_check2x2.jpg) |  | ![](ny20055306x777_check2x2.jpg) |  |  |  |
| **John McAvoy**<br>**Retired Chair, President & CEO,**<br>**Consolidated Edison, Inc. and** <br>**Retired Chair & CEO of** <br>**Consolidated Edison of New York, Inc.** | 65 | 2024  |  | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) |  |
| **Lloyd M. Yates**<br>**President & CEO, NiSource Inc.** | 65 | 2020  |  |  |  |  |  |  |

---

![](ny20055306x771_diversity.jpg)

**See "Proposal 1 – Election of Directors" for more information on our director nominees.**<br>

---

| | |
|:---|:---|
|  | **2** |
|  | **2** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    PROXY STATEMENT SUMMARY     <br>

GOVERNANCE HIGHLIGHTS

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| | |
|:---|:---|
| ![](ny20055306x777_check1.jpg) | Annual election of directors  |
| ![](ny20055306x777_check1.jpg) | Majority voting for all directors with resignation policy  |
| ![](ny20055306x777_check1.jpg) | No supermajority voting provisions  |
| ![](ny20055306x777_check1.jpg) | No stockholder rights plan ("poison pill")  |
| ![](ny20055306x777_check1.jpg) | Proxy access by-law (3% ownership / <br>3 years duration / up to 20 stockholders / <br>20% of board)  |
| ![](ny20055306x777_check1.jpg) | Stockholder right to call special meetings  |
| ![](ny20055306x777_check1.jpg) | Separate chair and CEO  |
| ![](ny20055306x777_check1.jpg) | All directors independent, except CEO  |
| ![](ny20055306x777_check1.jpg) | Board committees comprised of all independent directors  |

---

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| | |
|:---|:---|
| ![](ny20055306x777_check1.jpg) | Regular executive sessions of independent directors  |
| ![](ny20055306x777_check1.jpg) | Annual Board and committee evaluation process and ongoing evaluations of individual directors  |
| ![](ny20055306x777_check1.jpg) | Strategic and risk oversight by Board and committees  |
| ![](ny20055306x777_check1.jpg) | Annual "Say-on-Pay" advisory votes  |
| ![](ny20055306x777_check1.jpg) | Strong alignment between pay and performance in incentive plans  |
| ![](ny20055306x777_check1.jpg) | Commitment to safety and customer experience  |
| ![](ny20055306x777_check1.jpg) | Political contributions disclosure  |
| ![](ny20055306x777_check1.jpg) | Enhanced independent registered public accounting firm disclosure  |
| ![](ny20055306x777_check1.jpg) | Publication of annual sustainability report |

---

**See "Corporate Governance" for more information on our corporate governance practices.**<br>

EXECUTIVE COMPENSATION HIGHLIGHTS

We have designed our executive compensation program to meet our business objectives, including attracting and retaining top-level executive talent, using various compensation elements and to align executive pay with the long-term and short-term interests of our stockholders. We received approximately 97% stockholder support for our Say-on-Pay vote in 2025. We recognize and reward our executive officers through compensation arrangements that link their pay to the Company's performance, and we seek to ensure an alignment of interests with our stockholders, by including a significant portion of total compensation consisting of at-risk performance-based compensation.

---

| | |
|:---|:---|
| **We DO Have This Practice**  | **We DO Have This Practice**  |
| ![](ny20055306x777_check1.jpg) | Significant portion of executive compensation is variable and entirely contingent on performance against pre-established Company and individual performance goals  |
| ![](ny20055306x777_check1.jpg) | Incentive award metrics that are tied to key Company performance measures  |
| ![](ny20055306x777_check1.jpg) | One-year minimum vesting for equity awards  |
| ![](ny20055306x777_check1.jpg) | Double-trigger severance benefits upon a change-in-control  |
| ![](ny20055306x777_check1.jpg) | Limited perquisites  |
| ![](ny20055306x777_check1.jpg) | Share ownership guidelines applicable to executive officers and independent directors  |
| ![](ny20055306x777_check1.jpg) | Compensation recoupment policies  |
| ![](ny20055306x777_check1.jpg) | Annual Say-on-Pay vote by stockholders  |
| ![](ny20055306x777_check1.jpg) | Independent compensation consultant |

---

---

| | |
|:---|:---|
| **We Do NOT Have This Practice**  | **We Do NOT Have This Practice**  |
| ![](ny20055306x777_uncheck.jpg) | Repricing of options without stockholder approval  |
| ![](ny20055306x777_uncheck.jpg) | Hedging or pledging transactions or short sales by executive officers or directors  |
| ![](ny20055306x777_uncheck.jpg) | Tax gross ups for Named Executive Officers  |
| ![](ny20055306x771_uncheck.jpg)<br>| Automatic single-trigger equity vesting upon a change-in-control  |
| ![](ny20055306x777_uncheck.jpg) | Excise tax gross-ups under change-in-control agreements  |
| ![](ny20055306x777_uncheck.jpg) | Excessive pension benefits or defined benefit supplemental executive retirement plan  |
| ![](ny20055306x777_uncheck.jpg) | Excessive use of non-performance-based compensation  |
| ![](ny20055306x777_uncheck.jpg) | Excessive severance benefits |

---

**See "Compensation Discussion and Analysis (CD&A)" and "Components of 2025 Executive Compensation" for more information on our executive compensation program.**<br>

---

| | |
|:---|:---|
|  | **3** |
|  | **3** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    PROXY STATEMENT SUMMARY     <br>

ECONOMIC, ENVIRONMENTAL AND SOCIAL HIGHLIGHTS

We are focused on helping ensure the work we do satisfies long-term energy needs in a way that balances the interests of our stakeholders. Guiding principles that shape and inform how we make many of our decisions include, but are not limited to:

&nbsp;&nbsp;&nbsp;&nbsp;• Requiring that people must be at the center of any effort aimed at shifting to a cleaner, more sustainable energy model.

&nbsp;&nbsp;&nbsp;&nbsp;• Recognizing the decisions we make have a lasting and meaningful effect on our customers, employees, the communities we serve, our stockholders, and other stakeholders.

&nbsp;&nbsp;&nbsp;&nbsp;• Having a balanced, holistic approach in identifying solutions that allow us to remain flexible and adaptable for future policy changes, advancements in technology, and changing market conditions.

We announced a goal of net zero GHG emissions by 2040 covering both Scope 1 and Scope 2 GHG emissions ("Net Zero Goal"). Our Net Zero Goal builds on GHG emission reductions achieved to-date. We plan to achieve our Net Zero Goal primarily through the continuation and enhancement of existing programs, such as retiring and replacing coal-fired electric generation with low- or zero-emission electric generation, ongoing pipe replacement and modernization programs, and deployment of advanced leak-detection technologies. In addition, we plan to advance other low or zero-emission energy resources and technologies, which may include hydrogen, renewable natural gas, long-duration storage, and/or deployment of carbon capture and utilization technologies, if and when these become technologically and economically feasible. Carbon offsets and renewable energy credits may also be used to support achievement of our Net Zero Goal. Our GHG emissions projections, including achieving a Net Zero Goal, are subject to various assumptions that involve risks and uncertainties, and did not include any assumptions related to data center development and associated load growth. We remain committed to our Net Zero Goal; however, certain of our interim goals may evolve as we assess and respond to business opportunities such as data centers. Achievement of our Net Zero Goal by 2040 will require supportive regulatory and legislative policies, favorable stakeholder environments and advancement of technologies that are not currently economically or technologically feasible to deploy at scale, as well as execution of our business plan.

We are keenly aware that in addition to being a business entity, we are also a social and community enterprise that includes our employees, partners, customers and the communities we serve. For more information about our business and strategy and about our corporate responsibility and sustainability efforts, see our 2025 Annual Report on Form 10-K and our website at *www.nisource.com*.

GENERAL INFORMATION

#### Stock Symbol: NI

#### Stock Exchange : New York Stock Exchange ("NYSE")

#### Registrar and Transfer Agent : Computershare Investor Services

#### State of Incorporation : Delaware

#### Corporate Headquarters : 801 E. 86<sup>th</sup> Avenue, Merrillville, Indiana 46410

#### Corporate Website : www.nisource.com

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|  | **4** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**

## Proxy Statement
The accompanying proxy is solicited on behalf of the Board for the Annual Meeting to be held on Monday, May 11, 2026 at 10:30 a.m. Central Time, in a virtual format only via live audio webcast at www.virtualshareholdermeeting.com/NI2026. The common stock, $.01 par value per share, of the Company represented by the accompanying proxy will be voted as directed. If you return a signed proxy card without indicating how you want to vote your shares, the shares represented by the accompanying proxy will be voted as recommended by the Board:

&nbsp;&nbsp;&nbsp;&nbsp;• "FOR" all of the nominees for director;

&nbsp;&nbsp;&nbsp;&nbsp;• "FOR" advisory approval of the compensation of our NEOs; and

&nbsp;&nbsp;&nbsp;&nbsp;• "FOR" the ratification of the appointment of Deloitte as our independent registered public accounting firm for 2026.

This Proxy Statement and the accompanying proxy card are first being sent to stockholders on March 30, 2026. We will bear the expense of this solicitation, which may be supplemented by telephone, facsimile, email and personal solicitation by our officers, employees and agents. To aid in the solicitation of proxies, we have retained D.F. King for a fee of $12,500, plus reimbursement of expenses. We may incur additional fees if we request additional services. We will also request brokerage houses and other nominees and fiduciaries to forward proxy materials, at our expense, to the beneficial owners of stock held as of the close of business on March 16, 2026, the record date for voting.

Who May Vote

Holders of shares of common stock as of the close of business on March 16, 2026, are entitled to notice of and to vote at the Annual Meeting and any adjournment or postponement thereof. As of March 16, 2026, 479,357,787 shares of common stock were issued and outstanding. Each share of common stock outstanding on that date is entitled to one vote on each matter presented at the Annual Meeting.

Voting Your Proxy

If you are a "stockholder of record" (that is, if your shares of common stock are registered directly in your name on the Company's records), you may vote your shares by proxy in advance of the Annual Meeting using any of the following methods:

&nbsp;&nbsp;&nbsp;&nbsp;• Telephoning the toll-free number listed on the proxy card;

&nbsp;&nbsp;&nbsp;&nbsp;• Using the Internet website listed on the proxy card: *www.proxyvote.com*; or

&nbsp;&nbsp;&nbsp;&nbsp;• Marking, dating, signing and returning the enclosed proxy card.

All votes must be received by the proxy tabulator by 11:59 p.m. Eastern Time on May 10, 2026. If your shares are held in a brokerage account or by a bank, broker, trust or other nominee (herein referred to as a "Broker"), you are considered a "beneficial owner" of shares held in "street name." As a beneficial owner, you will receive proxy materials and voting instructions from the stockholder of record that holds your shares. You must follow the voting instructions in order to vote your shares of common stock.

Discretionary Voting by Brokers and "Broker Non-Votes"

If your shares are held in street name and you do not provide the Broker with instructions as to how to vote such shares, your Broker will only be able to vote your shares at its discretion on certain "routine" matters as permitted by NYSE rules. The proposal to ratify the appointment of our independent registered public accounting firm is considered a routine matter and, accordingly, at the Annual Meeting, Brokers will only have discretionary authority to vote your shares regarding Proposal No. 3, the ratification of the appointment of Deloitte as our independent registered public accounting firm for 2026. A "broker non-vote" occurs when a Broker holding shares for a beneficial owner does not have discretionary authority to vote the shares and has not received instructions from the beneficial owner as to how the beneficial owner would like the shares to be voted. Brokers will not have discretionary authority to vote your shares with respect to the other proposals presented at the Annual Meeting. Therefore, it is important that you instruct your Broker how to vote your shares. If Brokers exercise their discretionary voting authority on Proposal No. 3, such shares will be considered present at the Annual Meeting for quorum purposes and broker non-votes will occur as to each of the other proposals presented at the Annual Meeting, which are considered "non-routine."

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|  | **5** |
|  | **5** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    PROXY STATEMENT     <br>

Voting Shares Held in Our 401(k) Plan

If you hold your shares of common stock in our 401(k) Plan, those shares are held in the name of Fidelity Management Trust Company ("Fidelity"), the administrator of the 401(k) Plan. You will receive a proxy card that includes the number of shares of our common stock held in the 401(k) Plan. You should instruct Fidelity how to vote your shares by completing and returning the proxy card or by voting your shares by Internet or by telephone, as detailed above under "Voting Your Proxy." If you do not instruct Fidelity how to vote your shares, or if you sign the proxy card with no further instructions as to how to vote your shares, Fidelity will vote your shares in the same proportion as the shares for which it receives instructions from all other participants to the extent permitted under applicable law. To allow enough time for Fidelity to vote your shares in accordance with your direction, your voting instructions must be received by Fidelity no later than 11:59 p.m. Eastern Time on May 6, 2026.

Attending and Voting During the Virtual Annual Meeting

***Format of Meeting. The Annual Meeting will be conducted in a virtual format only to provide access to all our stockholders regardless of geographic location. There is no in-person meeting for you to attend. We designed the format of the Annual Meeting to ensure that our stockholders who attend the Annual Meeting will be afforded similar rights and opportunities to participate as they would at an in-person meeting.***

***Attending the Meeting. You are entitled to attend and participate in the Annual Meeting if you were a stockholder of record as of the close of business on March 16, 2026, the record date, or hold a legal proxy for the Annual Meeting provided by your Broker as described below. To attend and participate in the Annual Meeting, visit www.virtualshareholdermeeting.com/NI2026 and enter your 16-digit control number, which can be found on your proxy card, voting instruction form or email you received with your proxy materials. If your shares are held by a Broker and you do not have a control number, please contact your Broker as soon as possible so that you can be provided with a control number.***

***Voting During the Meeting. You may vote during the Annual Meeting by following the instructions available on the meeting website during the meeting. If your shares are held in street name by a Broker, then, to be able to vote at the Annual Meeting, you must obtain an executed legal proxy from the Broker indicating that you were the beneficial owner of the shares as of the close of business on March 16, 2026, the record date for voting, and that the Broker is giving you its proxy to vote the shares. If your shares are held in the 401(k) Plan, you will not be able to vote your shares at the Annual Meeting. Whether or not you plan to attend the Annual Meeting, we urge you to vote and submit your proxy in advance of the meeting by one of the methods described above under "Voting Your Proxy." Votes cast at the Annual Meeting or represented by proxy at the Annual Meeting will be tabulated by the inspector of election.***

***Technical Assistance. The Annual Meeting will begin promptly at 10:30 a.m. Central Time on Monday, May 11, 2026. We encourage you to access the Annual Meeting approximately 15 minutes in advance to allow ample time for you to log in to the meeting and test your computer audio system. We recommend that you carefully review the above procedures needed to gain admission in advance. Technicians will be ready to assist you with any technical difficulties you may have accessing the virtual meeting. If you encounter any difficulties accessing the virtual meeting during check-in or during the meeting, please call the technical support number that will be posted on the meeting login page at www.virtualshareholdermeeting.com/NI2026.***

***Submitting Questions During the Meeting. As part of the Annual Meeting, we will hold a question and answer session during which we intend to answer questions submitted during the meeting that are relevant to the purposes of the meeting and the Company's business in accordance with the Annual Meeting procedures posted on the meeting website, as time permits. Questions may be submitted by stockholders that have used their 16-digit control number to enter the meeting at www.virtualshareholdermeeting.com/NI2026. Questions and answers may be grouped by topic and substantially similar questions may be grouped and answered once.***

Revoking Your Proxy

You may revoke your proxy at any time before a vote is taken or the authority granted is otherwise exercised. To revoke a proxy, you may send a letter to our Corporate Secretary (which must be received before a vote is taken at the Annual Meeting) indicating that you want to revoke your proxy, or you can supersede your initial proxy by submitting a duly executed proxy bearing a later date, voting by telephone or through the Internet on a later date, or attending the virtual Annual Meeting and voting during the meeting. Attending the virtual Annual Meeting will not in and of itself revoke a proxy.

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|  | **6** |
|  | **6** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROXY STATEMENT     <br>

Quorum for the Meeting

A quorum of stockholders is necessary to take action at the Annual Meeting. A majority of the outstanding shares of our common stock, present during the virtual Annual Meeting or represented by proxy, will constitute a quorum at the Annual Meeting. The inspectors of election appointed for the Annual Meeting will determine whether a quorum is present. Abstentions are counted for purposes of determining whether a quorum is present. As explained above under "Discretionary Voting by Brokers and 'Broker Non-Votes'," if Brokers exercise their discretionary voting authority on Proposal No. 3, such shares will be considered present at the meeting for quorum purposes and broker non-votes will occur as to each of the other proposals presented at the Annual Meeting.

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|:---|:---|
|  | **7** |
|  | **7** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## Proposal 1 – Election of Directors
At the recommendation of the Nominating & Governance ("N&G") Committee, the Board has nominated the persons listed below to serve as directors, each for a one-year term, beginning at the Annual Meeting on May 11, 2026, and expiring at the 2027 annual meeting of our stockholders (the "2027 Annual Meeting") and until their successors are duly elected or appointed and qualified. The nominees include eleven independent directors, as defined in the applicable rules of the NYSE, and our President and CEO. All of the nominees currently serve on the Board and each nominee has consented to being named in the Proxy Statement and to serving, if elected. The Board does not anticipate that any of the nominees will be unable to serve, but if any nominee is unable to serve, the proxies may be voted for substitute nominees and will be voted in accordance with the judgment of the person or persons voting the proxies. Set forth below is information regarding all of our nominees.

VOTE REQUIRED

To be elected, a nominee must receive more votes cast in favor of his or her election than against election. Abstentions by those present or represented by proxy will not be counted as a vote cast either "for" or "against" with respect to the election of directors and, therefore, will have no effect on the outcome. Brokers will not have discretionary authority to vote on the election of directors. Accordingly, there could be broker non-votes, which will have no effect on the vote.

Under our Corporate Governance Guidelines, each nominee will tender a conditional resignation prior to the Annual Meeting, effective only if both (a) the votes "against" a nominee's election exceed the votes "for" election (a "failed re-election") and (b) such resignation is subsequently accepted by the Board. Any failed re-election will be referred to the N&G Committee, which will make a recommendation to the Board as to whether to accept or reject the resignation. The Board will decide and publicly disclose its decision, the rationale for the decision and the directors who participated in the process within 90 days after the election. The Board expects the director who has not been re-elected to abstain from participating in the N&G Committee or Board discussion or vote regarding whether to accept his or her resignation offer. A director who has had a failed re-election may participate in discussions or votes with respect to other directors who have had a failed re-election.

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|  | **8** |
|  | **8** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

NOMINEE SKILLS, DEMOGRAPHICS AND BIOGRAPHIES

We believe that our diverse slate of director nominees possess the necessary breadth and depth of skills and experience to oversee our business operations and long-term strategy. The following tables and biographies identify the balance of experience, skills and qualifications that the director nominees bring to the Board. The fact that a particular skill or qualification is not designated as to one or more nominees does not mean that those nominees do not also possess the specific experience and qualification.

---

| | | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Skill and Experience** | &nbsp;&nbsp;**Altabef** | &nbsp;&nbsp;**Barbour** | &nbsp;&nbsp;**Bunting** | &nbsp;&nbsp;**Butler** | &nbsp;&nbsp;**Henretta** | &nbsp;&nbsp;**Hersman** | &nbsp;&nbsp;**Jesanis** | &nbsp;&nbsp;**Johnson** | &nbsp;&nbsp;**Kabat** | &nbsp;&nbsp;**Lee** | &nbsp;&nbsp;**McAvoy** | &nbsp;&nbsp;**Yates** | **Total\***  |
| **Industry Experience** |  |  | ![](ny20055306x777_bullet.jpg) |  |  |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) |  |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;42%  |
| **Other Operations / Customer Service** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) |  | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;92%  |
| **Government and Regulatory** | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;100%  |
| **Public Company Board** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;100%  |
| **Financial or Capital Markets** | ![](ny20055306x777_bullet.jpg) |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) |  |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;75%  |
| **Risk Management** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;100%  |
| **Technology / Cybersecurity** | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) |  |  |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;67%  |
| **Safety** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) |  |  | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;83%  |
| **Environmental, Sustainability,** <br>**Corporate Responsibility and Ethics** | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;100%  |
| **Non-Profit Board / Community** <br>**Service** | ![](ny20055306x777_bulletx2.jpg) |  | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;92%  |
| **CEO (Current or Prior)** | ![](ny20055306x777_bullet.jpg) |  |  |  |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) |  | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;58%  |
| **Strategic Planning** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;100%  |
| **Financial Literacy and Expertise** | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | ![](ny20055306x777_bullet.jpg) | &nbsp;&nbsp;100%  |
| **Talent Management (Executive Compensation and Benefits, Talent Development)** | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | ![](ny20055306x777_bulletx2.jpg) | &nbsp;&nbsp;100%  |
| **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  | **DEMOGRAPHICS**  |
| **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  | **Race / Ethnicity**  |
| **African American** |  |  | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) |  |  |  |  |  | ![](ny20055306x777_check2.jpg) |  | ![](ny20055306x777_check2.jpg) | &nbsp;&nbsp;33%  |
| **Asian / Pacific Islander** |  |  |  |  |  |  |  |  |  |  |  |  |  |
| **White / Caucasian** | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) |  | &nbsp;&nbsp;75%  |
| **Hispanic / Latino** |  |  |  |  |  |  |  |  |  |  |  |  |  |
| **Native American** |  |  |  |  |  |  |  |  |  |  |  |  |  |
| **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  | **Gender**  |
| **Male** | ![](ny20055306x777_check2.jpg) |  | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) |  | ![](ny20055306x777_check2.jpg) | ![](ny20055306x777_check2.jpg) | &nbsp;&nbsp;67%  |
| **Female** |  | ![](ny20055306x777_check2x2.jpg) |  |  | ![](ny20055306x777_check2x2.jpg) | ![](ny20055306x777_check2x2.jpg) |  |  |  | ![](ny20055306x777_check2x2.jpg) |  |  | &nbsp;&nbsp;33% |

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\*

Percentages shown in this table represent the portion of the Board with the indicated skill or experience.

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|:---|:---|
|  | **9** |
|  | **9** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

&nbsp;&nbsp;THE BOARD UNANIMOUSLY RECOMMENDS THAT YOU VOTE "**FOR**" THE ELECTION OF EACH OF THE NOMINEES LISTED BELOW.<br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_paltabef.jpg) | PETER A. ALTABEF  | PETER A. ALTABEF  |
| ![](ny20055306x771_paltabef.jpg) | **Age: 66**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2017**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Compensation and Human Capital Committee (Chair)<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Nominating and Governance Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee <br>|
| **Executive Experience:**<br>**Mr. Altabef currently serves as chair of the board of Unisys Corporation, a global information technology company, a position he has held since April 2018. He previously served as CEO of Unisys Corporation from January 2015 to April 2025. Mr. Altabef also served as president from January 2015 through March 2020 and from November 2021 to May 2022. Prior to joining Unisys Corporation, he served as president and CEO of MICROS Systems, Inc., a provider of integrated software and hardware solutions to the hospitality and retail industries, from 2013 to 2014, when it was acquired by Oracle Corporation. Before that, he served as president and CEO of Perot Systems Corporation from 2004 to 2009, when it was acquired by Dell Inc. Following the acquisition, Mr. Altabef served as president of Dell Services, the information technology services and business process solutions unit of Dell Inc., until his departure in 2011.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Altabef is chair of the board of directors of Unisys Corporation. He is also a member of the President's National Security Telecommunications Advisory Committee (NSTAC), a trustee of the Committee for Economic Development (CED), a member of the advisory board of Merit Energy Company, LLC and of the board of directors of Petrus Trust Company, LTA. He previously served as a senior advisor to 2M Companies, Inc., in 2012, and as a director of MICROS Systems, Perot Systems Corporation and Belo Corporation. He is also active in community service activities, having served on the boards and committees of several cultural, medical, educational and charitable organizations and events.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:**<br>**Mr. Altabef has experience leading large organizations as CEO and a strong background in strategic planning, financial reporting, risk management, business operations and corporate governance. He also has more than 25 years of senior leadership experience at some of the world's leading information technology companies. As a result, he has a deep understanding of the cybersecurity issues facing businesses today. His overall leadership experience and his cybersecurity background provide the Board with valuable perspective and insight into significant issues that we face.** | **Executive Experience:**<br>**Mr. Altabef currently serves as chair of the board of Unisys Corporation, a global information technology company, a position he has held since April 2018. He previously served as CEO of Unisys Corporation from January 2015 to April 2025. Mr. Altabef also served as president from January 2015 through March 2020 and from November 2021 to May 2022. Prior to joining Unisys Corporation, he served as president and CEO of MICROS Systems, Inc., a provider of integrated software and hardware solutions to the hospitality and retail industries, from 2013 to 2014, when it was acquired by Oracle Corporation. Before that, he served as president and CEO of Perot Systems Corporation from 2004 to 2009, when it was acquired by Dell Inc. Following the acquisition, Mr. Altabef served as president of Dell Services, the information technology services and business process solutions unit of Dell Inc., until his departure in 2011.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Altabef is chair of the board of directors of Unisys Corporation. He is also a member of the President's National Security Telecommunications Advisory Committee (NSTAC), a trustee of the Committee for Economic Development (CED), a member of the advisory board of Merit Energy Company, LLC and of the board of directors of Petrus Trust Company, LTA. He previously served as a senior advisor to 2M Companies, Inc., in 2012, and as a director of MICROS Systems, Perot Systems Corporation and Belo Corporation. He is also active in community service activities, having served on the boards and committees of several cultural, medical, educational and charitable organizations and events.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:**<br>**Mr. Altabef has experience leading large organizations as CEO and a strong background in strategic planning, financial reporting, risk management, business operations and corporate governance. He also has more than 25 years of senior leadership experience at some of the world's leading information technology companies. As a result, he has a deep understanding of the cybersecurity issues facing businesses today. His overall leadership experience and his cybersecurity background provide the Board with valuable perspective and insight into significant issues that we face.** | **Executive Experience:**<br>**Mr. Altabef currently serves as chair of the board of Unisys Corporation, a global information technology company, a position he has held since April 2018. He previously served as CEO of Unisys Corporation from January 2015 to April 2025. Mr. Altabef also served as president from January 2015 through March 2020 and from November 2021 to May 2022. Prior to joining Unisys Corporation, he served as president and CEO of MICROS Systems, Inc., a provider of integrated software and hardware solutions to the hospitality and retail industries, from 2013 to 2014, when it was acquired by Oracle Corporation. Before that, he served as president and CEO of Perot Systems Corporation from 2004 to 2009, when it was acquired by Dell Inc. Following the acquisition, Mr. Altabef served as president of Dell Services, the information technology services and business process solutions unit of Dell Inc., until his departure in 2011.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Altabef is chair of the board of directors of Unisys Corporation. He is also a member of the President's National Security Telecommunications Advisory Committee (NSTAC), a trustee of the Committee for Economic Development (CED), a member of the advisory board of Merit Energy Company, LLC and of the board of directors of Petrus Trust Company, LTA. He previously served as a senior advisor to 2M Companies, Inc., in 2012, and as a director of MICROS Systems, Perot Systems Corporation and Belo Corporation. He is also active in community service activities, having served on the boards and committees of several cultural, medical, educational and charitable organizations and events.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:**<br>**Mr. Altabef has experience leading large organizations as CEO and a strong background in strategic planning, financial reporting, risk management, business operations and corporate governance. He also has more than 25 years of senior leadership experience at some of the world's leading information technology companies. As a result, he has a deep understanding of the cybersecurity issues facing businesses today. His overall leadership experience and his cybersecurity background provide the Board with valuable perspective and insight into significant issues that we face.** |

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|:---|:---|
|  | **10** |
|  | **10** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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|:---|:---|:---|
| ![](ny20055306x771_slbarbour.jpg) | SONDRA L. BARBOUR  | SONDRA L. BARBOUR  |
| ![](ny20055306x771_slbarbour.jpg) | **Age: 63**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2022**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Audit Committee (Chair)<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Finance Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee <br>|
| **Executive Experience:** <br>**Ms. Barbour retired as executive vice president, information systems and global solutions, of Lockheed Martin Corporation ("Lockheed Martin") in 2016 and served in a transition role at Leidos Holdings until her retirement in 2017. Ms. Barbour joined Lockheed Martin in 1986 and served in various leadership capacities and has extensive technology experience, notably in the design and development of large-scale information systems. From 2008 to 2013, Ms. Barbour served as senior vice president, enterprise business services and chief information officer, heading all of Lockheed Martin's internal information technology operations, including protecting the company's infrastructure and information from cyber threats. Prior to that role, Ms. Barbour served as vice president, corporate shared services and vice president, corporate internal audit providing oversight of supply chain activities, internal controls, and risk management.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Barbour serves as a director of AGCO Corporation, where she chairs the Talent & Compensation Committee, and is also a member of the Audit, Finance, and Executive Committees. Ms. Barbour is the Chair of Temple University's Fox School of Business Management Information Systems Advisory Board. Ms. Barbour previously served as a director for each of 3M Company and Perspecta Inc.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Barbour's significant experience with information technology systems and cybersecurity is valuable in helping steer our development of technology and management of cyber risks. Ms. Barbour brings 30 years of leadership experience from her roles at Lockheed Martin where she oversaw complex information technology systems of a 110,000+ employee business. She brings significant risk management knowledge related to technology and supply chain oversight, which are of key importance to our success. Ms. Barbour also enhances the Board's public company experience in the areas of internal controls, accounting, audit, risk management and cybersecurity.** | **Executive Experience:** <br>**Ms. Barbour retired as executive vice president, information systems and global solutions, of Lockheed Martin Corporation ("Lockheed Martin") in 2016 and served in a transition role at Leidos Holdings until her retirement in 2017. Ms. Barbour joined Lockheed Martin in 1986 and served in various leadership capacities and has extensive technology experience, notably in the design and development of large-scale information systems. From 2008 to 2013, Ms. Barbour served as senior vice president, enterprise business services and chief information officer, heading all of Lockheed Martin's internal information technology operations, including protecting the company's infrastructure and information from cyber threats. Prior to that role, Ms. Barbour served as vice president, corporate shared services and vice president, corporate internal audit providing oversight of supply chain activities, internal controls, and risk management.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Barbour serves as a director of AGCO Corporation, where she chairs the Talent & Compensation Committee, and is also a member of the Audit, Finance, and Executive Committees. Ms. Barbour is the Chair of Temple University's Fox School of Business Management Information Systems Advisory Board. Ms. Barbour previously served as a director for each of 3M Company and Perspecta Inc.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Barbour's significant experience with information technology systems and cybersecurity is valuable in helping steer our development of technology and management of cyber risks. Ms. Barbour brings 30 years of leadership experience from her roles at Lockheed Martin where she oversaw complex information technology systems of a 110,000+ employee business. She brings significant risk management knowledge related to technology and supply chain oversight, which are of key importance to our success. Ms. Barbour also enhances the Board's public company experience in the areas of internal controls, accounting, audit, risk management and cybersecurity.** | **Executive Experience:** <br>**Ms. Barbour retired as executive vice president, information systems and global solutions, of Lockheed Martin Corporation ("Lockheed Martin") in 2016 and served in a transition role at Leidos Holdings until her retirement in 2017. Ms. Barbour joined Lockheed Martin in 1986 and served in various leadership capacities and has extensive technology experience, notably in the design and development of large-scale information systems. From 2008 to 2013, Ms. Barbour served as senior vice president, enterprise business services and chief information officer, heading all of Lockheed Martin's internal information technology operations, including protecting the company's infrastructure and information from cyber threats. Prior to that role, Ms. Barbour served as vice president, corporate shared services and vice president, corporate internal audit providing oversight of supply chain activities, internal controls, and risk management.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Barbour serves as a director of AGCO Corporation, where she chairs the Talent & Compensation Committee, and is also a member of the Audit, Finance, and Executive Committees. Ms. Barbour is the Chair of Temple University's Fox School of Business Management Information Systems Advisory Board. Ms. Barbour previously served as a director for each of 3M Company and Perspecta Inc.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Barbour's significant experience with information technology systems and cybersecurity is valuable in helping steer our development of technology and management of cyber risks. Ms. Barbour brings 30 years of leadership experience from her roles at Lockheed Martin where she oversaw complex information technology systems of a 110,000+ employee business. She brings significant risk management knowledge related to technology and supply chain oversight, which are of key importance to our success. Ms. Barbour also enhances the Board's public company experience in the areas of internal controls, accounting, audit, risk management and cybersecurity.** |

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|:---|:---|
|  | **11** |
|  | **11** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_thbunting.jpg) | THEODORE H. BUNTING, JR.  | THEODORE H. BUNTING, JR.  |
| ![](ny20055306x771_thbunting.jpg) | **Age: 67**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2018**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Audit Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Nominating and Governance Committee <br>|
| **Executive Experience:** <br>**Mr. Bunting most recently served as group president, utility operations, at Entergy Corporation ("Entergy"), an integrated energy company, from 2012 until his retirement in 2017. Before that, he was senior vice president and chief accounting officer at Entergy from 2007 to 2012 and chief financial officer ("CFO") of several subsidiaries from 2000 to 2007. He held other management positions of increasing responsibility in accounting and operations at Entergy since joining the company in 1983.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Bunting has been a director of Unum Group since 2013 and is currently chair of its Audit Committee and a member of its Regulatory Compliance Committee. Mr. Bunting has been a director of the Hanover Group since 2020 and is a member of the Audit Committee. Mr. Bunting previously served as a director of Infrastructure and Energy Alternatives (IEA) from 2021 until October 2022 and as a member of the Nominating & Governance and Compensation Committees. He previously served as a director of Imation Corp., a global data storage and information security company. He also serves on the boards of Foundation for the Mid South and National Association of Black Accountants Inc. (NABA) and previously served on the board of Hendrix College.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Bunting's utility industry knowledge, including his experience in customer service, safety and regulatory relations, are valuable to us as we continue to execute on our robust long-term utility infrastructure investment plans. He also brings additional public company experience in the areas of strategic finance, accounting, auditing, and capital and risk management to the Board. He is a certified public accountant.** | **Executive Experience:** <br>**Mr. Bunting most recently served as group president, utility operations, at Entergy Corporation ("Entergy"), an integrated energy company, from 2012 until his retirement in 2017. Before that, he was senior vice president and chief accounting officer at Entergy from 2007 to 2012 and chief financial officer ("CFO") of several subsidiaries from 2000 to 2007. He held other management positions of increasing responsibility in accounting and operations at Entergy since joining the company in 1983.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Bunting has been a director of Unum Group since 2013 and is currently chair of its Audit Committee and a member of its Regulatory Compliance Committee. Mr. Bunting has been a director of the Hanover Group since 2020 and is a member of the Audit Committee. Mr. Bunting previously served as a director of Infrastructure and Energy Alternatives (IEA) from 2021 until October 2022 and as a member of the Nominating & Governance and Compensation Committees. He previously served as a director of Imation Corp., a global data storage and information security company. He also serves on the boards of Foundation for the Mid South and National Association of Black Accountants Inc. (NABA) and previously served on the board of Hendrix College.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Bunting's utility industry knowledge, including his experience in customer service, safety and regulatory relations, are valuable to us as we continue to execute on our robust long-term utility infrastructure investment plans. He also brings additional public company experience in the areas of strategic finance, accounting, auditing, and capital and risk management to the Board. He is a certified public accountant.** | **Executive Experience:** <br>**Mr. Bunting most recently served as group president, utility operations, at Entergy Corporation ("Entergy"), an integrated energy company, from 2012 until his retirement in 2017. Before that, he was senior vice president and chief accounting officer at Entergy from 2007 to 2012 and chief financial officer ("CFO") of several subsidiaries from 2000 to 2007. He held other management positions of increasing responsibility in accounting and operations at Entergy since joining the company in 1983.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Bunting has been a director of Unum Group since 2013 and is currently chair of its Audit Committee and a member of its Regulatory Compliance Committee. Mr. Bunting has been a director of the Hanover Group since 2020 and is a member of the Audit Committee. Mr. Bunting previously served as a director of Infrastructure and Energy Alternatives (IEA) from 2021 until October 2022 and as a member of the Nominating & Governance and Compensation Committees. He previously served as a director of Imation Corp., a global data storage and information security company. He also serves on the boards of Foundation for the Mid South and National Association of Black Accountants Inc. (NABA) and previously served on the board of Hendrix College.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Bunting's utility industry knowledge, including his experience in customer service, safety and regulatory relations, are valuable to us as we continue to execute on our robust long-term utility infrastructure investment plans. He also brings additional public company experience in the areas of strategic finance, accounting, auditing, and capital and risk management to the Board. He is a certified public accountant.** |

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| | |
|:---|:---|
|  | **12** |
|  | **12** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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|:---|:---|:---|
| ![](ny20055306x771_ebutler.jpg) | ERIC L. BUTLER  | ERIC L. BUTLER  |
| ![](ny20055306x771_ebutler.jpg) | **Age: 65**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2017**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Finance Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Safety, Operations, Regulatory and Policy Committee <br>|
| **Executive Experience:** <br>**Mr. Butler currently is president and CEO of Aswani-Butler Investment Associates, a private equity investment firm. Previously he served in a number of executive leadership roles at Union Pacific Corporation ("Union Pacific"), a transportation company located in Omaha, Nebraska, until his retirement in February 2018. He began his career at Union Pacific in 1986 and held leadership roles in finance, accounting, marketing and sales, supply, operations research and planning and human resources. He was vice president of financial planning and analysis from 1997 to 2000, vice president of purchasing and supply chain from 2000 to 2003, vice president and general manager of the automotive business from 2003 to 2005 and vice president and general manager of the industrial products business from 2005 to 2012. He was executive vice president of marketing and sales and chief commercial officer and ran the worldwide commercial business from 2012 to 2017. He served as executive vice president, chief administrative officer and corporate secretary from 2017 until his retirement.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Butler was appointed to the Federal Reserve Bank of Kansas City's Omaha Branch Board in 2015 and in 2018 was elected chair. His term on the Federal Reserve board ended in December 2020. He currently serves on the board of the Omaha Airport Authority, which he joined in 2007, the Eastman Chemical Company board of directors, which he joined in 2022, and the West Fraser Timber Co. Ltd board of directors, which he joined in 2023. Mr. Butler is also a member of the board of directors of the nonprofit organizations Joy of Life Faith Ministries, Inc. and Purpose Driven Advocacy Center, Inc. in Omaha, Nebraska.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Butler developed and led strategic and financial planning, marketing, sales, commercial, and supply, procurement and purchasing for one of the largest transportation companies in the world, Union Pacific. He most recently led the corporate governance, human resources, labor relations and administration functions at Union Pacific. His knowledge of the railroad transportation industry and the challenges in maintaining top-tier safety, customer service and risk management standards while providing an important part of the nation's infrastructure provides him with unique skills and insights that are valuable to the Board. In addition, he has experience in the purchase of fuel and energy materials and equipment. As a result, Mr. Butler has an understanding of the aging infrastructure, safety, organizational and regulatory issues facing utilities today and provides a viewpoint from an industry that is similarly positioned. His overall leadership experience and his regulated public company background provides the Board with another perspective on significant issues that we face.** | **Executive Experience:** <br>**Mr. Butler currently is president and CEO of Aswani-Butler Investment Associates, a private equity investment firm. Previously he served in a number of executive leadership roles at Union Pacific Corporation ("Union Pacific"), a transportation company located in Omaha, Nebraska, until his retirement in February 2018. He began his career at Union Pacific in 1986 and held leadership roles in finance, accounting, marketing and sales, supply, operations research and planning and human resources. He was vice president of financial planning and analysis from 1997 to 2000, vice president of purchasing and supply chain from 2000 to 2003, vice president and general manager of the automotive business from 2003 to 2005 and vice president and general manager of the industrial products business from 2005 to 2012. He was executive vice president of marketing and sales and chief commercial officer and ran the worldwide commercial business from 2012 to 2017. He served as executive vice president, chief administrative officer and corporate secretary from 2017 until his retirement.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Butler was appointed to the Federal Reserve Bank of Kansas City's Omaha Branch Board in 2015 and in 2018 was elected chair. His term on the Federal Reserve board ended in December 2020. He currently serves on the board of the Omaha Airport Authority, which he joined in 2007, the Eastman Chemical Company board of directors, which he joined in 2022, and the West Fraser Timber Co. Ltd board of directors, which he joined in 2023. Mr. Butler is also a member of the board of directors of the nonprofit organizations Joy of Life Faith Ministries, Inc. and Purpose Driven Advocacy Center, Inc. in Omaha, Nebraska.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Butler developed and led strategic and financial planning, marketing, sales, commercial, and supply, procurement and purchasing for one of the largest transportation companies in the world, Union Pacific. He most recently led the corporate governance, human resources, labor relations and administration functions at Union Pacific. His knowledge of the railroad transportation industry and the challenges in maintaining top-tier safety, customer service and risk management standards while providing an important part of the nation's infrastructure provides him with unique skills and insights that are valuable to the Board. In addition, he has experience in the purchase of fuel and energy materials and equipment. As a result, Mr. Butler has an understanding of the aging infrastructure, safety, organizational and regulatory issues facing utilities today and provides a viewpoint from an industry that is similarly positioned. His overall leadership experience and his regulated public company background provides the Board with another perspective on significant issues that we face.** | **Executive Experience:** <br>**Mr. Butler currently is president and CEO of Aswani-Butler Investment Associates, a private equity investment firm. Previously he served in a number of executive leadership roles at Union Pacific Corporation ("Union Pacific"), a transportation company located in Omaha, Nebraska, until his retirement in February 2018. He began his career at Union Pacific in 1986 and held leadership roles in finance, accounting, marketing and sales, supply, operations research and planning and human resources. He was vice president of financial planning and analysis from 1997 to 2000, vice president of purchasing and supply chain from 2000 to 2003, vice president and general manager of the automotive business from 2003 to 2005 and vice president and general manager of the industrial products business from 2005 to 2012. He was executive vice president of marketing and sales and chief commercial officer and ran the worldwide commercial business from 2012 to 2017. He served as executive vice president, chief administrative officer and corporate secretary from 2017 until his retirement.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Butler was appointed to the Federal Reserve Bank of Kansas City's Omaha Branch Board in 2015 and in 2018 was elected chair. His term on the Federal Reserve board ended in December 2020. He currently serves on the board of the Omaha Airport Authority, which he joined in 2007, the Eastman Chemical Company board of directors, which he joined in 2022, and the West Fraser Timber Co. Ltd board of directors, which he joined in 2023. Mr. Butler is also a member of the board of directors of the nonprofit organizations Joy of Life Faith Ministries, Inc. and Purpose Driven Advocacy Center, Inc. in Omaha, Nebraska.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Butler developed and led strategic and financial planning, marketing, sales, commercial, and supply, procurement and purchasing for one of the largest transportation companies in the world, Union Pacific. He most recently led the corporate governance, human resources, labor relations and administration functions at Union Pacific. His knowledge of the railroad transportation industry and the challenges in maintaining top-tier safety, customer service and risk management standards while providing an important part of the nation's infrastructure provides him with unique skills and insights that are valuable to the Board. In addition, he has experience in the purchase of fuel and energy materials and equipment. As a result, Mr. Butler has an understanding of the aging infrastructure, safety, organizational and regulatory issues facing utilities today and provides a viewpoint from an industry that is similarly positioned. His overall leadership experience and his regulated public company background provides the Board with another perspective on significant issues that we face.** |

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| | |
|:---|:---|
|  | **13** |
|  | **13** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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|:---|:---|:---|
| ![](ny20055306x771_dhenretta.jpg) | DEBORAH A. HENRETTA  | DEBORAH A. HENRETTA  |
| ![](ny20055306x771_dhenretta.jpg) | **Age: 64**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2015**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Nominating and Governance Committee (Chair)<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Compensation and Human Capital Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee <br>|
| **Executive Experience:** <br>**Ms. Henretta currently is a partner at Council Advisors company, where she serves as Senior Advisor spearheading digital transformation practice for SSA & Company. She retired from Procter & Gamble ("P&G") in 2015, where she served as group president of Global e-Business. Prior to her appointment as group president of Global e-Business, she held various senior positions throughout several P&G sectors, including as group president of Global Beauty from 2012 to 2015 and as group president of P&G Asia from 2007 to 2012. Prior to her appointment as group president of P&G Asia, she was president of P&G's business in ASEAN, Australia and India from 2005 to 2007. She joined P&G in 1985.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Henretta has been a director at American Eagle Outfitters, Inc. since 2019, and a director at Meritage Homes since 2017. Ms. Henretta previously served as a director at Corning Incorporated from 2013 to 2025 and Staples, Inc. from June 2016 until September 2017. Additionally, she serves on the board of trustees for Syracuse University.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Henretta has over 30 years of business leadership experience with P&G in a multi-jurisdictional regulatory and competitive business environment. She has experience across many markets, including profit and loss responsibility for multi-billion-dollar businesses at P&G and responsibility for strategic planning, sales, marketing, e-business, government relations and customer service. Ms. Henretta led a dynamic business segment and is, therefore, keenly aware of the delicate balance of keeping pace with customer expectations in a changing environment, as well as maximizing the benefits that inclusion and diversity can provide. Because of this experience, Ms. Henretta brings valuable insights to the Board and strategic leadership to us as we operate in multiple regulatory environments and develop products and customer service programs to meet our customer commitments. In her previous partner role at G100 Companies, she assisted in establishing a Board Excellence Program, which provides board director education.** | **Executive Experience:** <br>**Ms. Henretta currently is a partner at Council Advisors company, where she serves as Senior Advisor spearheading digital transformation practice for SSA & Company. She retired from Procter & Gamble ("P&G") in 2015, where she served as group president of Global e-Business. Prior to her appointment as group president of Global e-Business, she held various senior positions throughout several P&G sectors, including as group president of Global Beauty from 2012 to 2015 and as group president of P&G Asia from 2007 to 2012. Prior to her appointment as group president of P&G Asia, she was president of P&G's business in ASEAN, Australia and India from 2005 to 2007. She joined P&G in 1985.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Henretta has been a director at American Eagle Outfitters, Inc. since 2019, and a director at Meritage Homes since 2017. Ms. Henretta previously served as a director at Corning Incorporated from 2013 to 2025 and Staples, Inc. from June 2016 until September 2017. Additionally, she serves on the board of trustees for Syracuse University.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Henretta has over 30 years of business leadership experience with P&G in a multi-jurisdictional regulatory and competitive business environment. She has experience across many markets, including profit and loss responsibility for multi-billion-dollar businesses at P&G and responsibility for strategic planning, sales, marketing, e-business, government relations and customer service. Ms. Henretta led a dynamic business segment and is, therefore, keenly aware of the delicate balance of keeping pace with customer expectations in a changing environment, as well as maximizing the benefits that inclusion and diversity can provide. Because of this experience, Ms. Henretta brings valuable insights to the Board and strategic leadership to us as we operate in multiple regulatory environments and develop products and customer service programs to meet our customer commitments. In her previous partner role at G100 Companies, she assisted in establishing a Board Excellence Program, which provides board director education.** | **Executive Experience:** <br>**Ms. Henretta currently is a partner at Council Advisors company, where she serves as Senior Advisor spearheading digital transformation practice for SSA & Company. She retired from Procter & Gamble ("P&G") in 2015, where she served as group president of Global e-Business. Prior to her appointment as group president of Global e-Business, she held various senior positions throughout several P&G sectors, including as group president of Global Beauty from 2012 to 2015 and as group president of P&G Asia from 2007 to 2012. Prior to her appointment as group president of P&G Asia, she was president of P&G's business in ASEAN, Australia and India from 2005 to 2007. She joined P&G in 1985.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Henretta has been a director at American Eagle Outfitters, Inc. since 2019, and a director at Meritage Homes since 2017. Ms. Henretta previously served as a director at Corning Incorporated from 2013 to 2025 and Staples, Inc. from June 2016 until September 2017. Additionally, she serves on the board of trustees for Syracuse University.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Henretta has over 30 years of business leadership experience with P&G in a multi-jurisdictional regulatory and competitive business environment. She has experience across many markets, including profit and loss responsibility for multi-billion-dollar businesses at P&G and responsibility for strategic planning, sales, marketing, e-business, government relations and customer service. Ms. Henretta led a dynamic business segment and is, therefore, keenly aware of the delicate balance of keeping pace with customer expectations in a changing environment, as well as maximizing the benefits that inclusion and diversity can provide. Because of this experience, Ms. Henretta brings valuable insights to the Board and strategic leadership to us as we operate in multiple regulatory environments and develop products and customer service programs to meet our customer commitments. In her previous partner role at G100 Companies, she assisted in establishing a Board Excellence Program, which provides board director education.** |

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| | |
|:---|:---|
|  | **14** |
|  | **14** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_dhersman.jpg) | DEBORAH A. P. HERSMAN  | DEBORAH A. P. HERSMAN  |
| ![](ny20055306x771_dhersman.jpg) | **Age: 55**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2019**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Compensation and Human Capital Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Safety, Operations, Regulatory and Policy Committee <br>|
| **Executive Experience:** <br>**From November 2024 to December 2024, Ms. Hersman served as special assistant to Senator Thomas Carper. Ms. Hersman served as chief safety officer and advisor at Waymo LLC, the self-driving car technology subsidiary of Alphabet Inc., from January 2019 to December 2020. From 2014 to 2019, she served as president and CEO of the National Safety Council, a nonprofit organization focused on eliminating preventable deaths at work, in homes and communities, and on the road through leadership, research, education and advocacy.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**From 2004 to 2014, Ms. Hersman served as a board member and from 2009 to 2014 as chair of the National Transportation Safety Board (the "NTSB"). Previously she served in a professional staff role for the U.S. Senate Commerce, Science and Transportation Committee where she played key roles in crafting the Pipeline Safety Improvement Act of 2002 and legislation establishing a new modal administration focused on bus and truck safety. On June 29, 2023, she was appointed to the board of directors of One Gas Inc. and will become chair of the board in May 2026. In January 2026, she was appointed to the board of directors of Lyft, Inc. She previously served on the board of directors of Velodyne.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Hersman is a seasoned executive, having previously served as the CEO of the National Safety Council and as the chair and chief executive at the NTSB. She has a successful track record running complex safety-focused organizations with numerous stakeholders. A widely respected safety leader driven by mission and a passion for preserving human life, Ms. Hersman also has expertise in the details of navigating crises and strong experience with safety policy legislation and advocacy. Ms. Hersman's extensive safety experience is of great value to the Board as we continue to implement our safety management system and meet our safety commitments to our employees, customers and stakeholders.** | **Executive Experience:** <br>**From November 2024 to December 2024, Ms. Hersman served as special assistant to Senator Thomas Carper. Ms. Hersman served as chief safety officer and advisor at Waymo LLC, the self-driving car technology subsidiary of Alphabet Inc., from January 2019 to December 2020. From 2014 to 2019, she served as president and CEO of the National Safety Council, a nonprofit organization focused on eliminating preventable deaths at work, in homes and communities, and on the road through leadership, research, education and advocacy.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**From 2004 to 2014, Ms. Hersman served as a board member and from 2009 to 2014 as chair of the National Transportation Safety Board (the "NTSB"). Previously she served in a professional staff role for the U.S. Senate Commerce, Science and Transportation Committee where she played key roles in crafting the Pipeline Safety Improvement Act of 2002 and legislation establishing a new modal administration focused on bus and truck safety. On June 29, 2023, she was appointed to the board of directors of One Gas Inc. and will become chair of the board in May 2026. In January 2026, she was appointed to the board of directors of Lyft, Inc. She previously served on the board of directors of Velodyne.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Hersman is a seasoned executive, having previously served as the CEO of the National Safety Council and as the chair and chief executive at the NTSB. She has a successful track record running complex safety-focused organizations with numerous stakeholders. A widely respected safety leader driven by mission and a passion for preserving human life, Ms. Hersman also has expertise in the details of navigating crises and strong experience with safety policy legislation and advocacy. Ms. Hersman's extensive safety experience is of great value to the Board as we continue to implement our safety management system and meet our safety commitments to our employees, customers and stakeholders.** | **Executive Experience:** <br>**From November 2024 to December 2024, Ms. Hersman served as special assistant to Senator Thomas Carper. Ms. Hersman served as chief safety officer and advisor at Waymo LLC, the self-driving car technology subsidiary of Alphabet Inc., from January 2019 to December 2020. From 2014 to 2019, she served as president and CEO of the National Safety Council, a nonprofit organization focused on eliminating preventable deaths at work, in homes and communities, and on the road through leadership, research, education and advocacy.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**From 2004 to 2014, Ms. Hersman served as a board member and from 2009 to 2014 as chair of the National Transportation Safety Board (the "NTSB"). Previously she served in a professional staff role for the U.S. Senate Commerce, Science and Transportation Committee where she played key roles in crafting the Pipeline Safety Improvement Act of 2002 and legislation establishing a new modal administration focused on bus and truck safety. On June 29, 2023, she was appointed to the board of directors of One Gas Inc. and will become chair of the board in May 2026. In January 2026, she was appointed to the board of directors of Lyft, Inc. She previously served on the board of directors of Velodyne.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Ms. Hersman is a seasoned executive, having previously served as the CEO of the National Safety Council and as the chair and chief executive at the NTSB. She has a successful track record running complex safety-focused organizations with numerous stakeholders. A widely respected safety leader driven by mission and a passion for preserving human life, Ms. Hersman also has expertise in the details of navigating crises and strong experience with safety policy legislation and advocacy. Ms. Hersman's extensive safety experience is of great value to the Board as we continue to implement our safety management system and meet our safety commitments to our employees, customers and stakeholders.** |

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|:---|:---|
|  | **15** |
|  | **15** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_mjesanis.jpg) | MICHAEL E. JESANIS  | MICHAEL E. JESANIS  |
| ![](ny20055306x771_mjesanis.jpg) | **Age: 69**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2008**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Finance Committee (Chair) <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Audit Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee <br>|
| **Executive Experience:** <br>**Mr. Jesanis co-founded and was from 2013 to 2021 managing director of HotZero, LLC, a firm formed to develop hot water district energy systems in New England. Mr. Jesanis has served as an advisor to several startups in energy-related fields. From July 2004 through December 2006, Mr. Jesanis was president and CEO of National Grid USA, a natural gas and electric utility, and a subsidiary of National Grid plc, of which Mr. Jesanis was also an executive director. Prior to that position, Mr. Jesanis was chief operating officer ("COO") and CFO of National Grid USA from January 2001 to July 2004 and CFO of its predecessor utility holding company from 1998 to 2000.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Jesanis is a board member of El Paso Electric Company. He previously served as a director for several electric and energy companies, including Ameresco, Inc. Mr. Jesanis is the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**By virtue of his former positions as president and CEO, COO and, prior thereto CFO, of a major electric and gas utility holding company as well as his role with an energy efficiency consulting firm, Mr. Jesanis has extensive experience with regulated utilities. He has strong financial acumen and extensive managerial experience, having led modernization efforts in the areas of operating infrastructure improvements, customer service enhancements and management team development. Mr. Jesanis also demonstrates a commitment to education as the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university. As a result of his former senior managerial roles and his non-profit board service, Mr. Jesanis also has expertise with board governance issues.** | **Executive Experience:** <br>**Mr. Jesanis co-founded and was from 2013 to 2021 managing director of HotZero, LLC, a firm formed to develop hot water district energy systems in New England. Mr. Jesanis has served as an advisor to several startups in energy-related fields. From July 2004 through December 2006, Mr. Jesanis was president and CEO of National Grid USA, a natural gas and electric utility, and a subsidiary of National Grid plc, of which Mr. Jesanis was also an executive director. Prior to that position, Mr. Jesanis was chief operating officer ("COO") and CFO of National Grid USA from January 2001 to July 2004 and CFO of its predecessor utility holding company from 1998 to 2000.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Jesanis is a board member of El Paso Electric Company. He previously served as a director for several electric and energy companies, including Ameresco, Inc. Mr. Jesanis is the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**By virtue of his former positions as president and CEO, COO and, prior thereto CFO, of a major electric and gas utility holding company as well as his role with an energy efficiency consulting firm, Mr. Jesanis has extensive experience with regulated utilities. He has strong financial acumen and extensive managerial experience, having led modernization efforts in the areas of operating infrastructure improvements, customer service enhancements and management team development. Mr. Jesanis also demonstrates a commitment to education as the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university. As a result of his former senior managerial roles and his non-profit board service, Mr. Jesanis also has expertise with board governance issues.** | **Executive Experience:** <br>**Mr. Jesanis co-founded and was from 2013 to 2021 managing director of HotZero, LLC, a firm formed to develop hot water district energy systems in New England. Mr. Jesanis has served as an advisor to several startups in energy-related fields. From July 2004 through December 2006, Mr. Jesanis was president and CEO of National Grid USA, a natural gas and electric utility, and a subsidiary of National Grid plc, of which Mr. Jesanis was also an executive director. Prior to that position, Mr. Jesanis was chief operating officer ("COO") and CFO of National Grid USA from January 2001 to July 2004 and CFO of its predecessor utility holding company from 1998 to 2000.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Jesanis is a board member of El Paso Electric Company. He previously served as a director for several electric and energy companies, including Ameresco, Inc. Mr. Jesanis is the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**By virtue of his former positions as president and CEO, COO and, prior thereto CFO, of a major electric and gas utility holding company as well as his role with an energy efficiency consulting firm, Mr. Jesanis has extensive experience with regulated utilities. He has strong financial acumen and extensive managerial experience, having led modernization efforts in the areas of operating infrastructure improvements, customer service enhancements and management team development. Mr. Jesanis also demonstrates a commitment to education as the former chair of the board of a college and a past trustee (and past chair of the Audit Committee) of a university. As a result of his former senior managerial roles and his non-profit board service, Mr. Jesanis also has expertise with board governance issues.** |

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| | |
|:---|:---|
|  | **16** |
|  | **16** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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------

    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

---

| | | |
|:---|:---|:---|
| ![](ny20055306x771_wdjohnson.jpg) | WILLIAM D. JOHNSON  | WILLIAM D. JOHNSON  |
| ![](ny20055306x771_wdjohnson.jpg) | **Age: 72**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2022**<br>| **Standing Board Committees:** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Safety, Operations, Regulatory and Policy <br>Committee (Chair)<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Nominating and Governance Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee <br>|
| **Executive Experience:** <br>**Mr. Johnson most recently served as president and chief executive officer of Pacific Gas & Electric Corporation, a utility company, from May 2019 through June 2020. Mr. Johnson also served as president and chief executive officer of Tennessee Valley Authority, an electric utility company, from January 2013 to May 2019. Prior to joining Tennessee Valley Authority, Mr. Johnson held the positions of chairman, president and CEO of Progress Energy, Inc. ("Progress") from October 2007 to July 2012, and previously to that as president and chief operating officer from 2005 to 2007. His career at Progress included leadership roles of increasing responsibility including as president, energy delivery from 2004 to 2005, president and chief executive officer from 2002 to 2003, and executive vice president and general counsel from 2000 to 2002 of Progress Energy Service Company. Mr. Johnson's career began in 1992 at Carolina Power & Light Company (predecessor to Progress) where he held increasing senior management roles of associate general counsel and manager, legal department; vice president, senior counsel and corporate secretary and senior vice president and corporate secretary.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Johnson has been a director of TC Energy Corp. since June 2021, where he currently serves on the Audit Committee and Human Resources Committee. Mr. Johnson has also been a director of Terrestrial Energy since 2023. Terrestrial Energy went public in November 2025. Mr. Johnson previously served on the boards of directors of the following utility industry groups or associations: Edison Electric Institute as Vice Chair, Nuclear Energy Institute as Chair, Institute of Nuclear Power Operations, World Association of Nuclear Operators as Governor and Nuclear Electric Insurance Limited.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Johnson brings three decades of industry and leadership expertise to the Board. Mr. Johnson's multiple tenures as CEO and vast experience with industry groups related to gas, electric, nuclear and other utilities provide him with extensive leadership skills in the utilities industry and a deep understanding of regulated industry operations. Mr. Johnson guided Pacific Gas & Electric Corporation through its emergence from bankruptcy and served as CEO of Progress during its merger with Duke Energy, through which he gained significant experience in complex corporate restructuring, transactions, and strategy. His experience has also informed an understanding of safety and risk oversight in the utilities industry that the Board values. This extensive experience and depth of knowledge gives Mr. Johnson a strong perspective on strategic operations within the industry and makes Mr. Johnson a valuable asset to the Board.** | **Executive Experience:** <br>**Mr. Johnson most recently served as president and chief executive officer of Pacific Gas & Electric Corporation, a utility company, from May 2019 through June 2020. Mr. Johnson also served as president and chief executive officer of Tennessee Valley Authority, an electric utility company, from January 2013 to May 2019. Prior to joining Tennessee Valley Authority, Mr. Johnson held the positions of chairman, president and CEO of Progress Energy, Inc. ("Progress") from October 2007 to July 2012, and previously to that as president and chief operating officer from 2005 to 2007. His career at Progress included leadership roles of increasing responsibility including as president, energy delivery from 2004 to 2005, president and chief executive officer from 2002 to 2003, and executive vice president and general counsel from 2000 to 2002 of Progress Energy Service Company. Mr. Johnson's career began in 1992 at Carolina Power & Light Company (predecessor to Progress) where he held increasing senior management roles of associate general counsel and manager, legal department; vice president, senior counsel and corporate secretary and senior vice president and corporate secretary.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Johnson has been a director of TC Energy Corp. since June 2021, where he currently serves on the Audit Committee and Human Resources Committee. Mr. Johnson has also been a director of Terrestrial Energy since 2023. Terrestrial Energy went public in November 2025. Mr. Johnson previously served on the boards of directors of the following utility industry groups or associations: Edison Electric Institute as Vice Chair, Nuclear Energy Institute as Chair, Institute of Nuclear Power Operations, World Association of Nuclear Operators as Governor and Nuclear Electric Insurance Limited.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Johnson brings three decades of industry and leadership expertise to the Board. Mr. Johnson's multiple tenures as CEO and vast experience with industry groups related to gas, electric, nuclear and other utilities provide him with extensive leadership skills in the utilities industry and a deep understanding of regulated industry operations. Mr. Johnson guided Pacific Gas & Electric Corporation through its emergence from bankruptcy and served as CEO of Progress during its merger with Duke Energy, through which he gained significant experience in complex corporate restructuring, transactions, and strategy. His experience has also informed an understanding of safety and risk oversight in the utilities industry that the Board values. This extensive experience and depth of knowledge gives Mr. Johnson a strong perspective on strategic operations within the industry and makes Mr. Johnson a valuable asset to the Board.** | **Executive Experience:** <br>**Mr. Johnson most recently served as president and chief executive officer of Pacific Gas & Electric Corporation, a utility company, from May 2019 through June 2020. Mr. Johnson also served as president and chief executive officer of Tennessee Valley Authority, an electric utility company, from January 2013 to May 2019. Prior to joining Tennessee Valley Authority, Mr. Johnson held the positions of chairman, president and CEO of Progress Energy, Inc. ("Progress") from October 2007 to July 2012, and previously to that as president and chief operating officer from 2005 to 2007. His career at Progress included leadership roles of increasing responsibility including as president, energy delivery from 2004 to 2005, president and chief executive officer from 2002 to 2003, and executive vice president and general counsel from 2000 to 2002 of Progress Energy Service Company. Mr. Johnson's career began in 1992 at Carolina Power & Light Company (predecessor to Progress) where he held increasing senior management roles of associate general counsel and manager, legal department; vice president, senior counsel and corporate secretary and senior vice president and corporate secretary.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:**<br>**Mr. Johnson has been a director of TC Energy Corp. since June 2021, where he currently serves on the Audit Committee and Human Resources Committee. Mr. Johnson has also been a director of Terrestrial Energy since 2023. Terrestrial Energy went public in November 2025. Mr. Johnson previously served on the boards of directors of the following utility industry groups or associations: Edison Electric Institute as Vice Chair, Nuclear Energy Institute as Chair, Institute of Nuclear Power Operations, World Association of Nuclear Operators as Governor and Nuclear Electric Insurance Limited.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Johnson brings three decades of industry and leadership expertise to the Board. Mr. Johnson's multiple tenures as CEO and vast experience with industry groups related to gas, electric, nuclear and other utilities provide him with extensive leadership skills in the utilities industry and a deep understanding of regulated industry operations. Mr. Johnson guided Pacific Gas & Electric Corporation through its emergence from bankruptcy and served as CEO of Progress during its merger with Duke Energy, through which he gained significant experience in complex corporate restructuring, transactions, and strategy. His experience has also informed an understanding of safety and risk oversight in the utilities industry that the Board values. This extensive experience and depth of knowledge gives Mr. Johnson a strong perspective on strategic operations within the industry and makes Mr. Johnson a valuable asset to the Board.** |

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|:---|:---|
|  | **17** |
|  | **17** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_kkabat.jpg) | KEVIN T. KABAT  | KEVIN T. KABAT  |
| ![](ny20055306x771_kkabat.jpg) | **Age: 69**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2015**<br>| **Chair of the Board**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Executive Committee (Chair)<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Nominating and Governance Committee <br>|
| **Executive Experience:** <br>**From April 2007 to November 2015, Mr. Kabat was CEO of Fifth Third Bancorp, a bank holding company. He continued to serve as vice chair of the board of directors of Fifth Third Bancorp until his retirement in April 2016. Before becoming CEO, he served as Fifth Third Bancorp's president from June 2006 to September 2012 and as executive vice president from December 2003 to June 2006. Additionally, he was previously president and CEO of Fifth Third Bank (Michigan). Prior to that position, he was vice chair and president of Old Kent Bank, which was acquired by Fifth Third Bancorp in 2001.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Kabat has been a director of Unum Group since 2008 and is currently chair of the board. Mr. Kabat has been a director of Crown Castle Inc. since August 1, 2023. He previously served as a chair of the board of AltiGlobal Inc. from January 2023 to August 2023. He also previously served as the lead independent director of E\*TRADE Financial Corporation. He has also held leadership positions on the boards and committees of local business, educational, cultural and charitable organizations and campaigns.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Kabat has significant leadership experience as a CEO in a regulated industry at a public company. As a result, he has a deep understanding of operating in a regulatory environment and balancing the interests of many stakeholders. His extensive experience in strategic planning, risk management, financial reporting, internal controls and capital markets makes him an asset to the Board, as he is able to provide unique strategic insight, financial expertise and risk management skills. In addition, he has broad corporate governance skills and perspective gained from his service in leadership positions on the boards of other publicly traded companies.** | **Executive Experience:** <br>**From April 2007 to November 2015, Mr. Kabat was CEO of Fifth Third Bancorp, a bank holding company. He continued to serve as vice chair of the board of directors of Fifth Third Bancorp until his retirement in April 2016. Before becoming CEO, he served as Fifth Third Bancorp's president from June 2006 to September 2012 and as executive vice president from December 2003 to June 2006. Additionally, he was previously president and CEO of Fifth Third Bank (Michigan). Prior to that position, he was vice chair and president of Old Kent Bank, which was acquired by Fifth Third Bancorp in 2001.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Kabat has been a director of Unum Group since 2008 and is currently chair of the board. Mr. Kabat has been a director of Crown Castle Inc. since August 1, 2023. He previously served as a chair of the board of AltiGlobal Inc. from January 2023 to August 2023. He also previously served as the lead independent director of E\*TRADE Financial Corporation. He has also held leadership positions on the boards and committees of local business, educational, cultural and charitable organizations and campaigns.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Kabat has significant leadership experience as a CEO in a regulated industry at a public company. As a result, he has a deep understanding of operating in a regulatory environment and balancing the interests of many stakeholders. His extensive experience in strategic planning, risk management, financial reporting, internal controls and capital markets makes him an asset to the Board, as he is able to provide unique strategic insight, financial expertise and risk management skills. In addition, he has broad corporate governance skills and perspective gained from his service in leadership positions on the boards of other publicly traded companies.** | **Executive Experience:** <br>**From April 2007 to November 2015, Mr. Kabat was CEO of Fifth Third Bancorp, a bank holding company. He continued to serve as vice chair of the board of directors of Fifth Third Bancorp until his retirement in April 2016. Before becoming CEO, he served as Fifth Third Bancorp's president from June 2006 to September 2012 and as executive vice president from December 2003 to June 2006. Additionally, he was previously president and CEO of Fifth Third Bank (Michigan). Prior to that position, he was vice chair and president of Old Kent Bank, which was acquired by Fifth Third Bancorp in 2001.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Kabat has been a director of Unum Group since 2008 and is currently chair of the board. Mr. Kabat has been a director of Crown Castle Inc. since August 1, 2023. He previously served as a chair of the board of AltiGlobal Inc. from January 2023 to August 2023. He also previously served as the lead independent director of E\*TRADE Financial Corporation. He has also held leadership positions on the boards and committees of local business, educational, cultural and charitable organizations and campaigns.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Kabat has significant leadership experience as a CEO in a regulated industry at a public company. As a result, he has a deep understanding of operating in a regulatory environment and balancing the interests of many stakeholders. His extensive experience in strategic planning, risk management, financial reporting, internal controls and capital markets makes him an asset to the Board, as he is able to provide unique strategic insight, financial expertise and risk management skills. In addition, he has broad corporate governance skills and perspective gained from his service in leadership positions on the boards of other publicly traded companies.** |

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| | |
|:---|:---|
|  | **18** |
|  | **18** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| | | |
|:---|:---|:---|
| ![](ny20055306x771_clee.jpg) | CASSANDRA S. LEE  | CASSANDRA S. LEE  |
| ![](ny20055306x771_clee.jpg) | **Age: 57**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2022**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Audit Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Finance Committee <br>|
| **Executive Experience:** <br>**Ms. Lee is an experienced financial and operational leader with extensive knowledge of the telecommunication industry, currently serving as senior vice president and CFO for AT&T Inc. ("AT&T") Mobility and Consumer Wireline Segments, a position she has held since 2024. Ms. Lee joined AT&T in 1993 and has served in various leadership capacities, including chief audit executive from 2021 to 2024 and senior vice president and chief financial officer, AT&T Network, Technology and Capital Management from 2018 to 2021.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Lee currently serves on the board of directors of Andretti Acquisition Corp. II and on the board of trustees for the National Urban League. Ms. Lee previously served as a director of Andretti Acquisition Corp.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**In more than three decades with AT&T, Ms. Lee has acquired a wealth of expertise in various areas including retail operations, distribution strategy, global supply chain, mergers, acquisitions, and integration, capital management, network and other capacity planning, and shared services operations. Her vast and multifaceted experience in the telecommunication industry translates well in her service on the Board. Ms. Lee also has significant public company financial oversight and leadership experience that strengthens the Board's depth of financial acumen. Ms. Lee is a certified public accountant and veteran of the United States Army.** | **Executive Experience:** <br>**Ms. Lee is an experienced financial and operational leader with extensive knowledge of the telecommunication industry, currently serving as senior vice president and CFO for AT&T Inc. ("AT&T") Mobility and Consumer Wireline Segments, a position she has held since 2024. Ms. Lee joined AT&T in 1993 and has served in various leadership capacities, including chief audit executive from 2021 to 2024 and senior vice president and chief financial officer, AT&T Network, Technology and Capital Management from 2018 to 2021.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Lee currently serves on the board of directors of Andretti Acquisition Corp. II and on the board of trustees for the National Urban League. Ms. Lee previously served as a director of Andretti Acquisition Corp.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**In more than three decades with AT&T, Ms. Lee has acquired a wealth of expertise in various areas including retail operations, distribution strategy, global supply chain, mergers, acquisitions, and integration, capital management, network and other capacity planning, and shared services operations. Her vast and multifaceted experience in the telecommunication industry translates well in her service on the Board. Ms. Lee also has significant public company financial oversight and leadership experience that strengthens the Board's depth of financial acumen. Ms. Lee is a certified public accountant and veteran of the United States Army.** | **Executive Experience:** <br>**Ms. Lee is an experienced financial and operational leader with extensive knowledge of the telecommunication industry, currently serving as senior vice president and CFO for AT&T Inc. ("AT&T") Mobility and Consumer Wireline Segments, a position she has held since 2024. Ms. Lee joined AT&T in 1993 and has served in various leadership capacities, including chief audit executive from 2021 to 2024 and senior vice president and chief financial officer, AT&T Network, Technology and Capital Management from 2018 to 2021.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Ms. Lee currently serves on the board of directors of Andretti Acquisition Corp. II and on the board of trustees for the National Urban League. Ms. Lee previously served as a director of Andretti Acquisition Corp.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**In more than three decades with AT&T, Ms. Lee has acquired a wealth of expertise in various areas including retail operations, distribution strategy, global supply chain, mergers, acquisitions, and integration, capital management, network and other capacity planning, and shared services operations. Her vast and multifaceted experience in the telecommunication industry translates well in her service on the Board. Ms. Lee also has significant public company financial oversight and leadership experience that strengthens the Board's depth of financial acumen. Ms. Lee is a certified public accountant and veteran of the United States Army.** |

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|  | **19** |
|  | **19** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| ![](ny20055306x771_johnmcavoy.jpg) | JOHN MCAVOY  | JOHN MCAVOY  |
| ![](ny20055306x771_johnmcavoy.jpg) | **Age: 65**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2024**<br>| **Standing Board Committees:**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Compensation and Human Capital Committee<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• Safety, Operations, Regulatory and Policy Committee <br>|
| **Executive Experience:** <br>**Mr. McAvoy most recently served as president and chief executive officer of Consolidated Edison, Inc. ("ConEdison") and chief executive officer of Consolidated Edison Company of New York, Inc. ("ConEdison of New York") from December 2013 through December 28, 2020. He continued to serve as director of ConEdison until his retirement in May 2023 after forty-three years of experience with ConEdison, including serving as non-executive chairman of the board of ConEdison and the board of ConEdison of New York from January 2021 until December 2021, as well as chairman of the board of ConEdison and ConEdison of New York from May 2014 until December 2020. Prior to Mr. McAvoy's service as president and chief executive officer, he was president and chief executive officer of Orange and Rockland Utilities, Inc., a subsidiary of ConEdison, from January 2013 to December 2013. Prior to that, Mr. McAvoy was senior vice president of central operations for ConEdison of New York from February 2009 to December 2012.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. McAvoy was a trustee of the Intrepid Sea, Air & Space Museum and of Manhattan College until December 2023 and October 2023, respectively. Until January 2021, Mr. McAvoy served as a director or trustee of the American Gas Association, the Edison Electric Institute, the Mayor's Fund to Advance New York City, the Partnership for New York City, and the Electric Power Research Institute. Mr. McAvoy also served as chairman of the board of directors of Orange & Rockland until December 2020, and as a director of the New York State Energy Research and Development Authority until 2018 and the Business Council of New York State Inc. until 2016. Mr. McAvoy was also a member of the Electric Subsector Coordinating Council and chairman of the Members Executive Committee for the Electricity Information Sharing and Analysis Center.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. McAvoy has leadership, engineering, financial, and operations experience, as well as knowledge of the utility industry. Mr. McAvoy's experience from his leadership positions at a public company and within a public utility, and his service on other boards, is critical to support in the board's oversight of the Company's management, financial, operations, and strategic planning activities and relationships with stakeholders.** | **Executive Experience:** <br>**Mr. McAvoy most recently served as president and chief executive officer of Consolidated Edison, Inc. ("ConEdison") and chief executive officer of Consolidated Edison Company of New York, Inc. ("ConEdison of New York") from December 2013 through December 28, 2020. He continued to serve as director of ConEdison until his retirement in May 2023 after forty-three years of experience with ConEdison, including serving as non-executive chairman of the board of ConEdison and the board of ConEdison of New York from January 2021 until December 2021, as well as chairman of the board of ConEdison and ConEdison of New York from May 2014 until December 2020. Prior to Mr. McAvoy's service as president and chief executive officer, he was president and chief executive officer of Orange and Rockland Utilities, Inc., a subsidiary of ConEdison, from January 2013 to December 2013. Prior to that, Mr. McAvoy was senior vice president of central operations for ConEdison of New York from February 2009 to December 2012.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. McAvoy was a trustee of the Intrepid Sea, Air & Space Museum and of Manhattan College until December 2023 and October 2023, respectively. Until January 2021, Mr. McAvoy served as a director or trustee of the American Gas Association, the Edison Electric Institute, the Mayor's Fund to Advance New York City, the Partnership for New York City, and the Electric Power Research Institute. Mr. McAvoy also served as chairman of the board of directors of Orange & Rockland until December 2020, and as a director of the New York State Energy Research and Development Authority until 2018 and the Business Council of New York State Inc. until 2016. Mr. McAvoy was also a member of the Electric Subsector Coordinating Council and chairman of the Members Executive Committee for the Electricity Information Sharing and Analysis Center.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. McAvoy has leadership, engineering, financial, and operations experience, as well as knowledge of the utility industry. Mr. McAvoy's experience from his leadership positions at a public company and within a public utility, and his service on other boards, is critical to support in the board's oversight of the Company's management, financial, operations, and strategic planning activities and relationships with stakeholders.** | **Executive Experience:** <br>**Mr. McAvoy most recently served as president and chief executive officer of Consolidated Edison, Inc. ("ConEdison") and chief executive officer of Consolidated Edison Company of New York, Inc. ("ConEdison of New York") from December 2013 through December 28, 2020. He continued to serve as director of ConEdison until his retirement in May 2023 after forty-three years of experience with ConEdison, including serving as non-executive chairman of the board of ConEdison and the board of ConEdison of New York from January 2021 until December 2021, as well as chairman of the board of ConEdison and ConEdison of New York from May 2014 until December 2020. Prior to Mr. McAvoy's service as president and chief executive officer, he was president and chief executive officer of Orange and Rockland Utilities, Inc., a subsidiary of ConEdison, from January 2013 to December 2013. Prior to that, Mr. McAvoy was senior vice president of central operations for ConEdison of New York from February 2009 to December 2012.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. McAvoy was a trustee of the Intrepid Sea, Air & Space Museum and of Manhattan College until December 2023 and October 2023, respectively. Until January 2021, Mr. McAvoy served as a director or trustee of the American Gas Association, the Edison Electric Institute, the Mayor's Fund to Advance New York City, the Partnership for New York City, and the Electric Power Research Institute. Mr. McAvoy also served as chairman of the board of directors of Orange & Rockland until December 2020, and as a director of the New York State Energy Research and Development Authority until 2018 and the Business Council of New York State Inc. until 2016. Mr. McAvoy was also a member of the Electric Subsector Coordinating Council and chairman of the Members Executive Committee for the Electricity Information Sharing and Analysis Center.** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. McAvoy has leadership, engineering, financial, and operations experience, as well as knowledge of the utility industry. Mr. McAvoy's experience from his leadership positions at a public company and within a public utility, and his service on other boards, is critical to support in the board's oversight of the Company's management, financial, operations, and strategic planning activities and relationships with stakeholders.** |

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|  | **20** |
|  | **20** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    PROPOSAL 1 – ELECTION OF DIRECTORS     <br>

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| ![](ny20055306x771_lloydmyates.jpg) | LLOYD M. YATES  | LLOYD M. YATES  |
| ![](ny20055306x771_lloydmyates.jpg) | **Age: 65**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Director Since: 2020**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**President and CEO since 2022**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>| **Standing Board Committees:** <br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>• None <br>|
| **Executive Experience:** <br>**Mr. Yates has served as president and CEO of NiSource since February 2022. Mr. Yates retired in 2019 from Duke Energy, where he most recently served as executive vice president, customer and delivery operations, and president, Carolinas Region, since 2014. In this role, he was responsible for aligning customer-focused products and services to deliver a personalized end-to-end customer experience to position Duke Energy for long-term growth, as well as for the profit/loss, strategic direction and performance of Duke Energy's regulated utilities in North Carolina and South Carolina. Previously, he served as executive vice president of regulated utilities at Duke Energy, overseeing Duke Energy's utility operations in six states, federal government affairs, and environmental and energy policy at the state and federal levels, as well as executive vice president, customer operations, where he led the transmission, distribution, customer services, gas operations and grid modernization functions for millions of utility customers. He held various senior leadership roles at Progress Energy, Inc., prior to its merger with Duke Energy, from 2000 to 2012.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Yates currently serves on the board of directors of Marsh & McLennan Companies. He previously served on the board of directors of American Water Works Company Inc. and Sonoco Products Company.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Yates brings significant energy and regulated utility experience to our Board. He has over 40 years of experience in the energy industry, including in the areas of profit/loss management, customer service, nuclear and fossil generation and energy delivery. At Duke Energy, he used his operational experience to improve safety, reliability and the overall customer experience for millions of customers. He has expertise overseeing regulated utility operations, working with state regulators, and managing consumer and community affairs. He also has experience managing gas and grid modernization functions, which is valuable to our Board as we execute our business strategies. In addition, his experience as a director for other prominent public companies benefits our Board by bringing additional perspective to a variety of important areas of governance and strategic planning.** | **Executive Experience:** <br>**Mr. Yates has served as president and CEO of NiSource since February 2022. Mr. Yates retired in 2019 from Duke Energy, where he most recently served as executive vice president, customer and delivery operations, and president, Carolinas Region, since 2014. In this role, he was responsible for aligning customer-focused products and services to deliver a personalized end-to-end customer experience to position Duke Energy for long-term growth, as well as for the profit/loss, strategic direction and performance of Duke Energy's regulated utilities in North Carolina and South Carolina. Previously, he served as executive vice president of regulated utilities at Duke Energy, overseeing Duke Energy's utility operations in six states, federal government affairs, and environmental and energy policy at the state and federal levels, as well as executive vice president, customer operations, where he led the transmission, distribution, customer services, gas operations and grid modernization functions for millions of utility customers. He held various senior leadership roles at Progress Energy, Inc., prior to its merger with Duke Energy, from 2000 to 2012.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Yates currently serves on the board of directors of Marsh & McLennan Companies. He previously served on the board of directors of American Water Works Company Inc. and Sonoco Products Company.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Yates brings significant energy and regulated utility experience to our Board. He has over 40 years of experience in the energy industry, including in the areas of profit/loss management, customer service, nuclear and fossil generation and energy delivery. At Duke Energy, he used his operational experience to improve safety, reliability and the overall customer experience for millions of customers. He has expertise overseeing regulated utility operations, working with state regulators, and managing consumer and community affairs. He also has experience managing gas and grid modernization functions, which is valuable to our Board as we execute our business strategies. In addition, his experience as a director for other prominent public companies benefits our Board by bringing additional perspective to a variety of important areas of governance and strategic planning.** | **Executive Experience:** <br>**Mr. Yates has served as president and CEO of NiSource since February 2022. Mr. Yates retired in 2019 from Duke Energy, where he most recently served as executive vice president, customer and delivery operations, and president, Carolinas Region, since 2014. In this role, he was responsible for aligning customer-focused products and services to deliver a personalized end-to-end customer experience to position Duke Energy for long-term growth, as well as for the profit/loss, strategic direction and performance of Duke Energy's regulated utilities in North Carolina and South Carolina. Previously, he served as executive vice president of regulated utilities at Duke Energy, overseeing Duke Energy's utility operations in six states, federal government affairs, and environmental and energy policy at the state and federal levels, as well as executive vice president, customer operations, where he led the transmission, distribution, customer services, gas operations and grid modernization functions for millions of utility customers. He held various senior leadership roles at Progress Energy, Inc., prior to its merger with Duke Energy, from 2000 to 2012.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Outside Board and Other Experience:** <br>**Mr. Yates currently serves on the board of directors of Marsh & McLennan Companies. He previously served on the board of directors of American Water Works Company Inc. and Sonoco Products Company.**<br>**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**<br>**Skills and Qualifications:** <br>**Mr. Yates brings significant energy and regulated utility experience to our Board. He has over 40 years of experience in the energy industry, including in the areas of profit/loss management, customer service, nuclear and fossil generation and energy delivery. At Duke Energy, he used his operational experience to improve safety, reliability and the overall customer experience for millions of customers. He has expertise overseeing regulated utility operations, working with state regulators, and managing consumer and community affairs. He also has experience managing gas and grid modernization functions, which is valuable to our Board as we execute our business strategies. In addition, his experience as a director for other prominent public companies benefits our Board by bringing additional perspective to a variety of important areas of governance and strategic planning.** |

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|  | **21** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## Corporate Governance
Director Independence

Under our Corporate Governance Guidelines, a majority of the Board must be comprised of "independent directors". In order to assist the Board in making its determination of director independence, the Board has adopted categorical standards of independence consistent with the standards contained in Section 303A.02 of the NYSE Listed Company Manual. A copy of our Corporate Governance Guidelines is posted on our website at *https://www.nisource.com/investors/governance*.

In considering Mr. Johnson's independence, the Board considered the ordinary course and arms-length business relationship between subsidiaries of the Company and TC Energy Corp., where Mr. Johnson serves as a member of the board of directors. The Board has affirmatively determined that, with the exception of Mr. Yates, all of the members of the Board and all nominees are "independent directors" as defined in Section 303A.02 of the NYSE Listed Company Manual and our Corporate Governance Guidelines.

Policies and Procedures with Respect to Transactions with Related Persons

We have established policies and procedures with respect to the review, approval and ratification of any transactions with related persons.

Under its charter, the N&G Committee reviews reports and disclosures of related party transactions. Under our Conflicts of Interest policy, the following situations may present a conflict of interest and must be reviewed to determine if they involve a direct or indirect interest of any 5% stockholder, director, executive officer or employee (including immediate family members) or otherwise present a conflict of interest:

&nbsp;&nbsp;&nbsp;&nbsp;• owning more than a 10% equity interest or a general partner interest in any entity that transacts business with the Company (including lending or leasing transactions, but excluding the receipt of utility service from the Company at tariff rates), if the total amount involved in such transactions may exceed $120,000;

&nbsp;&nbsp;&nbsp;&nbsp;• selling anything to the Company or buying anything from the Company (including lending or leasing transactions, but excluding the receipt of utility service from the Company at tariff rates), if the total amount involved in such transactions may exceed $120,000;

&nbsp;&nbsp;&nbsp;&nbsp;• consulting for or being employed by a competitor of the Company; and

&nbsp;&nbsp;&nbsp;&nbsp;• being in the position of supervising, reviewing or having any influence on the job evaluation, pay or benefit of any immediate family member employed by the Company.

Related person transactions are subject to a prior review and approval and in certain circumstances as may be necessary, are ratified by the N&G Committee. Directors are expected to raise any potential transactions involving a conflict of interest that relate to them with the N&G Committee so that they may be reviewed in a prompt manner. Additionally, officers are expected to raise any potential transactions involving a conflict of interest that relate to them with the General Counsel so that they may be reviewed in a prompt manner. The General Counsel's office will review with the N&G Committee situations that may present a conflict of interest. Related person transactions are reviewed annually.

There were no transactions between the Company and any 5% stockholder, officer, director or nominee for director, or any affiliate of or person related to any of them, since January 1, 2025, of the type or amount required to be disclosed under the applicable Securities and Exchange Commission ("SEC") rules.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    CORPORATE GOVERNANCE     <br>

Communications with the Board and Non-Management Directors

Stockholders and other interested persons may communicate any concerns they may have regarding the Company as follows:

&nbsp;&nbsp;&nbsp;&nbsp;• Communications to the Board may be made to the Board generally, any director individually, the non-management directors as a group, or the Chair of the Board, by writing to the below address. The Corporate Secretary will review and forward, as appropriate, such correspondence in order to facilitate communication with the Board, its committees, the independent directors, or individual members.

NiSource Inc.

Attention: Board of Directors, or any Board member, or non-management directors, or Chair of the Board

c/o Corporate Secretary

801 E. 86<sup>th</sup> Avenue

Merrillville, Indiana 46410

&nbsp;&nbsp;&nbsp;&nbsp;• The Audit Committee has approved procedures with respect to the receipt, retention and treatment of complaints regarding accounting, internal accounting controls or audit matters. Communications regarding such matters may be made by contacting our Ethics department at *ethics@nisource.com*, calling the business ethics hotline at 1-800-457-2814, or writing to:

NiSource Inc.

Attention: Director, Corporate Ethics

801 E. 86<sup>th</sup> Avenue

Merrillville, Indiana 46410

Stockholder Engagement

We are committed to engaging with our stockholders and soliciting their views and input on matters important to them. Our N&G Committee is responsible for overseeing the stockholder engagement process and the periodic review and assessment of stockholder input on governance matters. In 2025, as part of our stockholder engagement process, management held conversations with various stockholders throughout the year in a variety of forums. These conversations cover many corporate governance topics, including Board composition, executive compensation and other matters. In addition, in response to the stockholder proposal at the 2025 Annual Meeting seeking to lower the current 25% ownership threshold to call a special meeting, these conversations also allowed an opportunity to discuss this topic. These engagements provided us an opportunity to understand certain stockholders' perspectives. The information obtained from these discussions with stockholders was used to evaluate and review our practices and disclosures. We intend to continue stockholder engagement on governance and other matters each year outside of the proxy season. Our independent directors are available to engage in dialogue with stockholders on matters of significance to understand stockholders' views. In addition, management regularly participates in investor and industry conferences throughout the year to discuss performance and share its perspective on the Company and industry developments.

Code of Business Conduct

We have a Code of Business Conduct to promote: (i) ethical behavior, including the ethical handling of conflicts of interest; (ii) full, fair, accurate, timely and understandable financial disclosure; (iii) compliance with applicable laws, rules and regulations; (iv) accountability for adherence to our Code of Business Conduct; and (v) prompt internal reporting of violations of our code. Our Code of Business Conduct satisfies applicable SEC and NYSE requirements and applies to all directors, officers (including our principal executive officer, principal financial officer, principal accounting officer and controller), and all other employees of the Company and our affiliates. A copy of our Code of Business Conduct is available on our website at *https://www.nisource.com/investors/governance* and also is available to any stockholder upon written request to our Corporate Secretary at the address noted above under the heading "Communications with the Board and Non-Management Directors".

Any waiver of our Code of Business Conduct for any director, executive officer or Section 16 Officer may be made only by the Audit Committee of the Board and must be promptly disclosed to the extent and in the manner required by the SEC or the NYSE and posted on our website. No such waivers were granted in 2025.

To instill and reinforce our values and culture, we require our employees to participate in regular training on rotating ethics and compliance topics each year, including, among others, raising concerns, treating others with respect, preventing discrimination in the

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

workplace, anti-bribery and corruption, data protection, harassment, conflicts of interest, and the anonymous ethics and compliance hotline. All employees receive training on our Code of Business Conduct annually or more frequently if there is a material change in content. Our business ethics program, including the employee training program, is reviewed annually by our executive leadership team and the Audit Committee of the Board. Our Audit Committee receives regular updates throughout the year.

Corporate Governance Guidelines

The N&G Committee is responsible for annually reviewing and reassessing the Corporate Governance Guidelines and submitting any recommended changes to the Board for its approval. A copy of the Corporate Governance Guidelines can be found on our website at *https://www.nisource.com/investors/governance* and is also available to any stockholder upon written request to our Corporate Secretary.

Board Leadership Structure

Our Corporate Governance Guidelines state that we reserve the right to consider leadership of the Board in the way that best serves our interests at the time and, accordingly, the Board has no fixed policy with respect to combining or separating the offices of Chair and CEO. If the Chair is not an independent director, an independent Lead Director will be chosen annually by the Board, taking into account the recommendation of the N&G Committee. The Chair or, if the Chair is not an independent director, the Lead Director, will be the presiding director of executive sessions of the Board. To promote open discussion among the non-management directors, the Board schedules regular executive sessions at meetings of the Board and each of its committees.

Since late 2006, the offices of Chair and CEO of the Company have been held by different individuals, with the Chair being an independent director.

The duties of the Chair of the Board are as follows:

&nbsp;&nbsp;&nbsp;&nbsp;• providing leadership to the Board and management, and monitoring the discharge of their duties;

&nbsp;&nbsp;&nbsp;&nbsp;• presiding at meetings of stockholders and the Board, including executive sessions of the Board and meetings of the independent directors;

&nbsp;&nbsp;&nbsp;&nbsp;• serving as a liaison between the independent directors and management;

&nbsp;&nbsp;&nbsp;&nbsp;• in consultation with the CEO, setting agendas for the meetings of the Board, and developing annual Board meeting schedules for approval by the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• ensuring proper flow of information to the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• having the authority to call special meetings of the Board and independent directors;

&nbsp;&nbsp;&nbsp;&nbsp;• being available for consultation and direct communication with stockholders and other key stakeholders, as appropriate; and

&nbsp;&nbsp;&nbsp;&nbsp;• having such other responsibilities and performing such duties as may from time to time be assigned to him or her by the Board.

The Board periodically reviews the structure and the division of responsibilities between the role of independent Chair and CEO. The structure and division of responsibilities is intended to maintain the integrity of the oversight function of the Board by providing a separate framework of responsibilities for the independent Chair as set forth above.

Board Oversight of Risk

Similar to other large corporations, we face a myriad of risks. Our Board takes an active role in monitoring and assessing our strategic, compliance, operational and financial risks, as well as cybersecurity risks. The Board also has oversight over risks related to environmental, social and governance strategy, including assuring that these risks and opportunities are directly tied to our business strategy and understanding how we are measuring progress toward goals. The Board administers its oversight function through utilization of its various committees.

Board oversight includes consideration of management's process for assessing existing risks and emerging risks and the policies management has implemented to monitor and control such risks and elevate major and emerging risks for discussion with the Board, which includes the Company's Risk Management Committee. Our Risk Management Committee, which consists of

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

members of our senior management, is responsible for oversight of our risk management process. Senior management regularly provide reports on our risks and emerging risks to the Board, the Audit Committee and the other Board committees that oversee the applicable risks. Additionally, the Audit Committee discusses with management and the independent registered public accounting firm the effect of regulatory and accounting initiatives on our financial statements and is responsible for review and evaluation of our major risk exposures, including cybersecurity and supplier risks, and the steps management has taken to monitor and control such exposures.

The Compensation & Human Capital ("C&HC") Committee, the Safety, Operations, Regulatory and Policy ("SORP") Committee, the Finance Committee and the N&G Committee are each charged with overseeing the risks associated with their respective areas of responsibility. The C&HC Committee oversees risks related to executive compensation and human capital management matters, including incentive compensation, succession planning, workforce initiatives, employee engagement, culture and talent management. The SORP Committee oversees risks related to safety and operations. The Finance Committee oversees risks related to capital management and allocation and investor relations. The N&G Committee oversees risks related to environmental, social, sustainability and climate change matters, public company governance, CEO succession planning, political spending and stockholder engagement. For more information regarding the oversight responsibilities of the Board Committees, see the descriptions of the committees below.

Generally, at each Board meeting, the chairs of each committee provide a report to the Board on any key items and risks discussed at the respective committee meetings. In addition, the Board regularly discusses the Company's short-, medium-, and long-term strategy and risks. Shorter term risks and related matters are generally discussed at meetings of the Board and applicable committee on a regular and recurring basis, whereas longer term risks are discussed at least annually and as appropriate throughout the course of the year. Our Board or applicable committee receives information from external advisors and others, including the Company's independent auditors, legal counsel, compensation consultant, and financial advisors, to advise on key risks and other issues relevant to the Company.

Oversight of Cybersecurity

As noted above, the Board is responsible for overseeing our risks and this oversight is administered through the utilization of its committees. Specifically, the Audit Committee is primarily responsible for oversight of the cybersecurity program and risks from cybersecurity threats, with input from the Company's Risk Management Committee through our cybersecurity program. The cybersecurity program includes a variety of security controls and measures designed to identify, assess, and manage material cybersecurity risks. The key components of the cybersecurity program are risk assessment, third-party risk management, security controls and incident response.

The Audit Committee meets quarterly and, as needed, reviews the Company's cybersecurity posture and makes recommendations for improvement. The Chief Information Security Officer ("CISO") regularly briefs the Audit Committee on cybersecurity risks and the efforts to address them. In addition, the Board of Directors is briefed regularly, through written reports and updates by the Audit Committee, about key and emerging cybersecurity risks.

At the management level, the CISO leads the cybersecurity program and is responsible for assessing and managing cybersecurity risks. The CISO is supported by the NiSource Enterprise Security team which performs the cybersecurity function and engages directly on the prevention, detection, mitigation, and remediation of cybersecurity incidents.

NiSource monitors the increasing sophistication of cybersecurity threats and continues to contribute resources to improve its cybersecurity program to protect its information systems and assets. No cybersecurity program is effective to identify and mitigate all threats, and NiSource cannot guarantee that it will be able to prevent all cybersecurity incidents.

Succession Planning

Our management team performs succession planning for officer-level and critical roles to ensure that we develop and sustain a strong bench of talent capable of performing at the highest levels. Not only is talent identified, but potential paths of development are discussed to ensure that employees have an opportunity to build their skills and are well prepared for future roles. We maintain formal succession plans for our CEO and key executive officers. The succession plan for our CEO is reviewed by the N&G Committee and the succession plans for executive officers (other than the CEO) are reviewed by the C&HC Committee annually or more frequently as needed.

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| | |
|:---|:---|
|  | **25** |
|  | **25** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

Meetings and Committees of the Board

The Board met 14 times during 2025. Each incumbent director attended at least 75% of the total number of meetings of the Board and of the committees of the Board on which he or she served and, in each case, during the periods that he or she served. Pursuant to our Corporate Governance Guidelines, directors are expected to attend all Board meetings, to spend the time needed to discharge their responsibilities as directors and to attend the annual meeting of stockholders.

100% of directors attended the 2025 annual meeting of stockholders.

Pursuant to our Corporate Governance Guidelines, the Board expects that our senior officers will regularly attend Board and Committee meetings, present proposals and otherwise assist in the work of the Board. Members of the Board have direct access to all of our employees, outside advisors and independent registered public accounting firm.

The Board has established six standing committees to assist the Board in carrying out its duties: the Audit Committee, the C&HC Committee, the Finance Committee, the N&G Committee, the SORP Committee and the Executive Committee. The Board generally evaluates the structure and membership of its committees on an annual basis, appoints the independent members of the Board to serve on the committees and elects committee chairs following the annual meeting of stockholders.

The following table shows the composition of each standing Board committee as of the date of this Proxy Statement. Mr. Yates does not serve on any committee but is invited to attend various committee meetings. Mr. Kabat, Chair of the Board, serves as chair of the Executive Committee, on the N&G Committee and is invited to attend all meetings of each of the other committees.

Board Committee Composition

This table represents current committee membership as of March 30, 2026.

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Director** | **Audit** | **C&HC** | **Finance** | **N&G** | **SORP** | **Executive**  |
| **Peter A. Altabef** |  | **CHAIR** |  | ![](ny20055306x777_check2.jpg) |  | ![](ny20055306x777_check2.jpg) |
| **Sondra L. Barbour<sup>(1)</sup>** | **CHAIR** |  | ![](ny20055306x777_check2x2.jpg) |  |  | ![](ny20055306x777_check2x2.jpg)  |
| **Theodore H. Bunting, Jr.<sup>(1)</sup>** | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) |  |  |
| **Eric L. Butler** |  |  | ![](ny20055306x777_check2x2.jpg) |  | ![](ny20055306x777_check2x2.jpg) |  |
| **Deborah A. Henretta** |  | ![](ny20055306x777_check2.jpg) |  | **CHAIR** |  | ![](ny20055306x777_check2.jpg) |
| **Deborah A. P. Hersman** |  | ![](ny20055306x777_check2x2.jpg) |  |  | ![](ny20055306x777_check2x2.jpg) |  |
| **Michael E. Jesanis<sup>(1)</sup>** | ![](ny20055306x777_check2.jpg) |  | **CHAIR** |  |  | ![](ny20055306x777_check2.jpg) |
| **William D. Johnson** |  |  |  | ![](ny20055306x777_check2x2.jpg) | **CHAIR** | ![](ny20055306x777_check2x2.jpg)  |
| **Kevin T. Kabat<sup>(2)</sup>** |  |  |  | ![](ny20055306x777_check2.jpg) |  | **CHAIR**  |
| **Cassandra S. Lee<sup>(1)</sup>** | ![](ny20055306x777_check2x2.jpg) |  | ![](ny20055306x777_check2x2.jpg) |  |  |  |
| **John McAvoy** |  | ![](ny20055306x777_check2.jpg) |  |  | ![](ny20055306x777_check2.jpg) |  |
| **Lloyd M. Yates** |  |  |  |  |  |  |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Audit Committee Financial Expert, as defined by SEC rules.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Independent Chair of the Board.

The summaries below are qualified by reference to the entire charter for each of the Audit, C&HC, Finance, N&G, SORP and Executive Committees; each of which can be found on our website at *https://www.nisource.com/investors/governance* and is also available to any stockholder upon written request to our Corporate Secretary. Additionally, any committee may perform other duties and responsibilities, consistent with their respective charters, our Amended and Restated Bylaws (our "Bylaws"), Delaware law, the rules of the NYSE, the federal securities laws and such other requirements applicable to us, delegated to any committee by the Board, or in the case of the C&HC Committee, under any provision of any of our benefit or compensation plans.

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| | |
|:---|:---|
|  | **26** |
|  | **26** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

AUDIT COMMITTEE

The Audit Committee met ten times in 2025. Our Audit Committee is responsible for the oversight of our internal audit function and financial reporting process. The Audit Committee has the sole authority to appoint, retain or replace our independent registered public accounting firm and is responsible for, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;• monitoring the integrity of the financial statements of the Company;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our independent registered public accounting firm's qualifications and independence and compensating our independent registered public accounting firm;

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing the performance of our internal audit function and our independent registered public accounting firm;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and discussing with management and our independent registered public accounting firm our annual and quarterly financial statements before earnings announcements;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and discussing with management our annual and quarterly earnings press releases;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and discussing with management and our independent registered public accounting firm major issues regarding accounting principles and financial statement presentations, adequacy of internal controls, and any critical judgments or accounting estimates made in connection with the preparation of financial statements;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our major risk exposures, including cybersecurity and supplier and technological innovation, obsolescence, and failure risks, and the steps management has taken to monitor and control such exposures, including discussion of our risk assessment and risk management policies; and

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing our compliance with legal and regulatory requirements, other than to the extent such matters are overseen by the SORP Committee.

The Board has determined that all of the members of the Audit Committee are independent as defined under the applicable NYSE and SEC rules, including the additional independence standard for audit committee members, and under our Corporate Governance Guidelines.

For more information regarding the Audit Committee, see "Audit Committee Report," "Proposal 3 — Ratification of Independent Registered Public Accounting Firm" and "Independent Registered Public Accounting Firm Fees" below.

C&HC COMMITTEE

The C&HC Committee met five times in 2025. The C&HC Committee is responsible for reviewing our human capital management programs, apprising the Board with respect to the evaluation, compensation and benefits of our executives, and reviewing policies and programs to attract, retain, and appropriately reward employees. The C&HC Committee's responsibilities include, among other items, the following:

&nbsp;&nbsp;&nbsp;&nbsp;• evaluating the performance of our CEO and other executive officers considering our goals and objectives;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and approving the goals and objectives relevant to CEO and executive officer compensation;

&nbsp;&nbsp;&nbsp;&nbsp;• making recommendations to the independent Board members regarding CEO compensation and approving compensation of the other executive officers;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and approving periodically a general compensation policy for our other officers and officers of our principal subsidiaries;

&nbsp;&nbsp;&nbsp;&nbsp;• approving, or if appropriate, making recommendations to the Board with respect to incentive compensation plans and equity-based plans;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our officer candidates for election by the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating the executive officers' development and succession plan (other than our CEO's succession plan, which is reviewed by the N&G Committee);

&nbsp;&nbsp;&nbsp;&nbsp;• evaluating the risks associated with our compensation policies and practices and the steps management has taken to monitor and control such risks; and

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing the Company's human capital management function, including procedures, programs, policies and practices with respect to equal employment opportunity and workforce initiatives; employee engagement and corporate culture; and leadership talent and workforce development.

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|:---|:---|
|  | **27** |
|  | **27** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

All of the directors serving on the C&HC Committee are: (i) independent as defined under the applicable NYSE and SEC rules and under our Corporate Governance Guidelines and the additional NYSE independence standard for members of compensation committees and (ii) "non-employee directors" as defined under Rule 16b-3 of the Exchange Act. For additional information regarding the C&HC Committee's principles, policies and practices, please see the discussion under "Compensation Discussion and Analysis (CD&A)".

FINANCE COMMITTEE

The Finance Committee met five times during 2025. Its responsibilities include the following, among others:

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our financial plans, capital structure, equity and debt levels, credit ratings, dividend policy and financial policies;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our corporate insurance programs;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our investment strategy and investments;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our financial, tax, interest rate exposure to economic risks, and as appropriate, third party credit and commodity risks, and the steps management has taken to monitor and control such risks;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our annual earnings guidance and capital budgets and review capital investment opportunities and programs, and recommend approval of capital budgets to the Board; and

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing our hedging policies and exempt swap transactions.

N&G COMMITTEE

The N&G Committee met five times in 2025. Its responsibilities include, among others:

&nbsp;&nbsp;&nbsp;&nbsp;• identifying individuals qualified to become Board members, consistent with criteria approved by the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• recommending to the Board director nominees for election at the next annual meeting of the stockholders;

&nbsp;&nbsp;&nbsp;&nbsp;• developing and recommending to the Board the Corporate Governance Guidelines;

&nbsp;&nbsp;&nbsp;&nbsp;• consulting with management to determine the appropriate response to stockholder proposals submitted pursuant to SEC rules, excluding proposals regarding safety, operations, regulatory policy matters and compensation and human capital matters, which are reviewed by the SORP Committee and the C&HC Committee, respectively;

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing our environmental, social, nominating and governance-related stockholder engagement process and periodically reviewing stockholder input on corporate governance matters;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our CEO succession plan and working with the Board to evaluate potential successors to our CEO;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and overseeing, at least annually, corporate and business unit political spending;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and considering independence and possible conflicts of interest of members of the Board and executive officers and reviewing reports and disclosures of related party transactions and conducting a reasonable prior review of such related-party transactions in accordance with legal and regulatory requirements;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our strategy, efforts, programs, policies, practices and performance with respect to environmental, social, sustainability and climate change matters to ensure they are consistent with the long-term strategic objectives and good corporate citizenship;

&nbsp;&nbsp;&nbsp;&nbsp;• evaluating any resignation tendered by a director and making recommendations to the Board about whether to accept such resignation; and

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing the evaluation of the performance of the Board and its committees.

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| | |
|:---|:---|
|  | **28** |
|  | **28** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

SORP COMMITTEE

The SORP Committee met five times during 2025. The SORP Committee assists the Board in overseeing the programs, performance and risks relative to the oversight and review of our operations, including safety, performance and regulatory compliance matters. Its responsibilities include, among others:

&nbsp;&nbsp;&nbsp;&nbsp;• overseeing the overall performance of our utility company operations and our compliance with operational, legal and regulatory requirements;

&nbsp;&nbsp;&nbsp;&nbsp;• evaluating our safety policies, practices and performance relating to our employees, contractors and the general public;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and assessing stockholder proposals related to safety, operations, regulatory or policy;

&nbsp;&nbsp;&nbsp;&nbsp;• monitoring our relationships with regulatory and governmental authorities and our ability to make timely, complete and accurate regulatory filings;

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and monitoring major legislation, regulation and other external influences that pertain to the SORP Committee's responsibilities and assessing the impact on us; and

&nbsp;&nbsp;&nbsp;&nbsp;• reviewing and evaluating our programs, policies, practices and performance with respect to health and safety compliance auditing.

The N&G Committee, with the assistance of the independent compensation consultant, annually reviews the amount and composition of non-employee director compensation. Please see the discussion under the heading "2025 Director Compensation" for a description of the compensation we provide to our non-employee directors. The N&G Committee also leads the processes set forth below.

***Director Selection Process. The N&G Committee identifies and screens candidates for director and makes its recommendations for director to the Board. At times the Board may establish an ad hoc search committee to assist the N&G Committee in this process. Additionally, the N&G Committee has the authority to retain a search firm to help it identify director candidates to the extent it deems necessary or appropriate. Any search firm that is engaged will include women and minority candidates in the pool of director candidates presented to the N&G Committee. In considering candidates for director, the N&G Committee considers the skills, expertise, experience and qualifications that will best complement the overall mix of skills and expertise of the Board in view of the strategy of, and the risks and opportunities that we face, as well as each candidate's relevant business, academic and industry experience, professional background, age, current employment, community service, other board service and other factors. In addition, the N&G Committee takes into account the racial, ethnic and gender diversity of the Board and actively seeks minority and female candidates.***

The N&G Committee seeks to identify and recommend candidates with a reputation for, and record of, integrity and good business judgment who have experience in positions with a high degree of responsibility and are leaders in the organizations with which they are affiliated; are effective in working in complex collegial settings; are free from conflicts of interest that could interfere with a director's duties to us and our stockholders; and are willing and able to make the necessary commitment of time and attention required for effective service on the Board, including limiting their service on other boards to a reasonable number. The N&G Committee also takes into account the candidate's level of financial literacy. The N&G Committee monitors the mix of skills and experience of the directors in order to assess whether the Board has the necessary tools to perform its oversight function effectively. The N&G Committee also assesses the diversity of the Board as a part of its annual self-assessment process as described in more detail below. The N&G Committee will consider nominees for directors recommended by stockholders and will use the same criteria to evaluate candidates proposed by stockholders as it uses to evaluate the candidates identified by the Board.

The Board has determined that all of the members of the N&G Committee are independent as defined under the applicable NYSE rules and our Corporate Governance Guidelines.

For information on how to nominate a person for election as a director at the 2027 Annual Meeting, please see the discussion under the heading "Stockholder Proposals and Nominations for 2027 Annual Meeting."

***Evaluation Processes. The Board recognizes that a robust and constructive performance evaluation process is an essential component of Board effectiveness. As such, the Board conducts (a) director and (b) board and committee annual performance evaluations that are intended to determine whether the Board, each of its committees, and individual Board members are functioning effectively and to provide them with an opportunity to reflect upon and improve processes and effectiveness. The N&G Committee oversees these evaluation processes. Annually at its meeting in March, the N&G Committee initiates the board and committee self-evaluation process and approves the form of written evaluation questionnaires that are distributed to each director for completion. The written evaluation questionnaires are updated each year as necessary to reflect changes identified in the prior***

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|:---|:---|
|  | **29** |
|  | **29** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

year, any committee charter changes and any suggestions from the directors. The questionnaires solicit feedback on Board composition, Board meeting mechanics, including information received, core responsibilities, relationship with management, committee functioning and other relevant matters. Annually at its meeting in October, the N&G Committee initiates the director peer evaluation process. As part of the director peer evaluations, the N&G Chair meets with each director individually to solicit feedback with respect to individual director performance and Board dynamics. Our Board utilizes the results of these evaluations in making decisions on Board agendas, Board structure, committee responsibilities and agendas, information presented to the Board, and continued service of individual directors on the Board. This information is then shared with the Board, and appropriate actions or changes are then identified.

***Director Education. At the Company's expense, all directors are encouraged to periodically attend director continuing education programs offered by various organizations. The Company also maintains an orientation program that consists of written materials, oral presentations, and site visits. In addition to orientation, we maintain an internal director education program where corporate and industry information is disseminated through various mediums, including presentations and written materials, webinars and seminars and site visits.***

***Retirement Age; No Term Limits. The Board periodically evaluates the performance and qualifications of individual directors in connection with the nomination process, including the appropriate time for retirement of directors. However, no director after having attained the age of 72 years will be nominated for re-election to the Board unless the Board determines that the nomination is in the best interests of the Company. In consideration of the significant recent commercial transactions and the value of retaining a director who has deep insights into our industry and extensive leadership skills as a former CEO, executive and director of other publicly traded companies, the Board determined that it would be in the best interests of NiSource and its stockholders to ask Mr. Johnson to stand for re-election at the 2026 Annual Meeting, as permitted under our Corporate Governance Guidelines, although he has attained the age of 72. Although the N&G Committee will consider length of service in recommending candidates for re-election, the Board does not believe that adopting a set term limit for directors serves our interests. Such limits may result in the loss of contributions from directors who have been able to develop, over a period of time, increasing insight into our operations and our strategic direction. The N&G Committee reviews these policies as part of its annual governance review and will consider modifications to these policies as deemed necessary and in our best interests and the best interests of our stockholders.***

***Director Compensation. This section describes compensation for our non-employee directors. To attract and retain highly qualified candidates to serve on the Board, we provide a combination of cash and equity awards. Our non-employee director compensation is reviewed annually by our N&G Committee with the assistance of Meridian Compensation Partners, LLC ("Meridian"), the C&HC Committee's independent compensation consultant. A full-time employee who serves as a director does not receive any additional compensation for service on the Board.***

A substantial portion of each non-employee director's annual retainer is in the form of equity awards. For 2025, each non-employee director received an annual retainer of $290,000, consisting of $116,000 in cash and an award of restricted stock units ("RSUs") valued at $174,000 at the time of grant. The cash retainer is paid in arrears in four equal installments at the end of each calendar quarter.

RSUs are awarded annually on the date of each annual meeting of stockholders and generally vest on the first anniversary of the grant date, subject to continued service on the Board through the vesting date. The number of RSUs is determined by dividing the value of the grant by the closing price of our common stock on the grant date.

A non-employee director who is newly appointed to the Board other than in connection with an annual meeting of stockholders will receive a grant of RSUs upon appointment and the number of RSUs awarded is determined in the same manner as described above for annual awards, but the award is pro-rated based on the portion of the vesting period that has passed since the last annual meeting. Initial director awards are scheduled to vest on the first anniversary of the grant date, subject to continued service on the Board through the vesting date. The RSUs granted at and after the 2020 annual meetings of stockholders were granted under the NiSource Inc. 2020 Omnibus Incentive Plan ("2020 Omnibus Plan"), while RSU awards granted prior to the 2020 annual meeting of stockholders were granted under the NiSource Inc. 2010 Omnibus Incentive Plan ("2010 Omnibus Plan"). General vesting dates may be impacted by (i) elections to defer receipt of RSU awards, (ii) a "change-in-control" (as defined in the 2020 Omnibus Plan or 2010 Omnibus Plan, as applicable), or (iii) separation due to retirement, death or disability. RSUs accrue dividends prior to settlement in shares of our common stock. If a non-employee director elects to defer receipt of his or her RSUs, then such deferred stock units will be paid in shares of our common stock upon the non-employee director's separation from the Board or such other date selected by the non-employee director.

Each non-employee director who serves as chair of a Board committee receives compensation for the additional responsibilities associated with such service. The 2025 committee chair fees were $20,000 for each of the standing committees. The Chair of the Board received additional annual compensation of $160,000 for his role. These fees are paid in cash in arrears in four equal installments and are prorated in the case of partial year service.

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| | |
|:---|:---|
|  | **30** |
|  | **30** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    CORPORATE GOVERNANCE     <br>

***All Other Compensation. The compensation included under the column "All Other Compensation" in the 2025 Director Compensation Table below consists of matching contributions made by the NiSource Charitable Foundation (the "Foundation").***

***Director Stock Ownership. The Board maintains stock ownership requirements for directors that are included in our Corporate Governance Guidelines. Within five years of becoming a non-employee director, each non-employee director is required to hold an amount of our stock with a value equal to five times the annual cash retainer paid to directors. Company stock that counts towards satisfaction of this requirement includes shares purchased on the open market, awards of restricted stock or RSUs, and shares beneficially owned in a trust or by a spouse or other immediate family member residing in the same household. All of the non-employee director nominees are in compliance with the stock ownership guidelines or are within the five-year transition period included in the Corporate Governance Guidelines.***

Each director has a significant portion of his or her compensation directly aligned with long-term stockholder value. Approximately sixty percent (60%) of a non-employee director's 2025 annual retainer (valued as of the time of award and excluding committee retainers) consisted of RSUs, which are converted into common stock when vested and distributed to the director.

## 2025 Director Compensation
The table below sets forth all compensation earned by or paid to our non-employee directors in 2025. Mr. Yates did not receive any additional compensation for his service on the Board. Mr. Yates' compensation for serving as President and CEO during 2025 is discussed in the Executive Compensation section of this Proxy Statement.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Name** | **Fees Earned or** <br>**Paid in Cash**<br>**($)<sup>(1)</sup>**  | **Stock Awards** <br>**($)<sup>(2)(3)</sup>** | **All Other** <br>**Compensation** <br>**($)<sup>(4)</sup>** | **Total** <br>**($)**  |
| **Peter A. Altabef** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$128743 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20000 | $322743  |
| **Sondra L. Barbour** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$128743 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $302743  |
| **Theodore H. Bunting, Jr.** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$123313 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $297313  |
| **Eric L. Butler** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$123313 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $297313  |
| **Deborah A. Henretta** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$136000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $310000  |
| **Deborah A.P. Hersman** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$116000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2000 | $292000  |
| **Michael E. Jesanis** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$136000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15000 | $325000  |
| **William D. Johnson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$136000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $310000  |
| **Kevin T. Kabat** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$276000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $450000  |
| **Cassandra S. Lee** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$116000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12500 | $302500  |
| **John McAvoy** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$116000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$174000 |  | $290000 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) The fees shown include the annual cash retainer and any Board and chair fees paid during the year to each non-employee director.

&nbsp;&nbsp;&nbsp;&nbsp;(2) The amounts shown reflect the grant date fair value of awards computed in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 718. For RSUs, the grant date fair value is the number of shares multiplied by the closing price of our stock on the award date. On May 12, 2025, each non-employee director received an award of RSUs valued at $174,000, which was equal to approximately 4,541 RSUs valued at $38.32 per unit, the closing price of our common stock on that date. For information on the valuation assumptions used in these computations, see Note 17 to our consolidated financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the "2025 Annual Report on Form 10-K").

&nbsp;&nbsp;&nbsp;&nbsp;(3) As of December 31, 2025, the number of equity awards (in the form of RSUs or deferred stock units) that were outstanding for each non-employee director was as follows: Mr. Altabef, 4,601.076; Ms. Barbour, 25,227.117; Mr. Bunting, 10,528.001; Mr. Butler, 4,601.076; Ms. Henretta, 72,700.763; Ms. Hersman, 43,113.738; Mr. Jesanis, 4,601.076; Mr. Johnson, 24,466.065; Mr. Kabat, 4,601.076; Ms. Lee, 25,005.271; and Mr. McAvoy, 11,881.245. For Mr. Yates, the number of RSUs or deferred stock units he received while serving as a non-employee director which were outstanding as of December 31, 2025 was 15,231.417.

&nbsp;&nbsp;&nbsp;&nbsp;(4) The amounts shown reflect matching contributions made by the Foundation under the Director Charitable Match Program. The Foundation matches up to $10,000 annually in contributions by any non-employee director to approved tax-exempt charitable organizations. Any amount not utilized for the match in the year it is first available is carried over to the following year.

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|:---|:---|
|  | **31** |
|  | **31** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**

## Security Ownership of Certain Beneficial Owners and Management
The following table shows as of March 16, 2026, the number of shares of our outstanding common stock beneficially owned by (which includes any shares that would be distributable within 60 days of March 16, 2026): (i) beneficial owners of more than 5% of our outstanding common stock (based solely on the Schedule 13G filings and any amendments thereto filed with the SEC on or before March 16, 2026) except as noted below; (ii) each of our directors and NEOs; and (iii) our directors and executive officers as a group. None of the NEOs or directors have any outstanding stock options as of that date. The business address of each of our directors and executive officers is our address.

---

| | | |
|:---|:---|:---|
| **Name and Address of Beneficial Owner** | **Number of Shares of** <br>**Common Stock** <br>**Beneficially Owned** | **Percent of Class**<br>**Outstanding<sup>(9)</sup>**  |
| **5% Owners**<br>|  |  |
| &nbsp;&nbsp;&nbsp;The Vanguard Group<sup>(1)</sup> <br>100 Vanguard Blvd. <br>Malvern, PA 19355 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53932502 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.3%  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;T. Rowe Price Investment Management, Inc.<sup>(2)</sup> <br>1307 Point Street <br>Baltimore, MD 21231 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50331635 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.5%  |
| &nbsp;&nbsp;&nbsp;BlackRock, Inc.<sup>(3)</sup> <br>50 Hudson Yards <br>New York, NY 10001 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47256914 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.9%  |
| &nbsp;&nbsp;&nbsp;State Street Corporation<sup>(4)</sup> <br>One Congress Street, Suite 1 <br>Boston, MA 02114 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23762068 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.0%  |
| **Directors and Named Executive Officers** |  |  |
| &nbsp;&nbsp;&nbsp;Shawn Anderson<sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;109910 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Peter A. Altabef<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46631 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Sondra L. Barbour<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25391 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Melody Birmingham | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100399 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Theodore H. Bunting, Jr.<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46125 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Eric L. Butler<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63886 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Deborah A. Henretta<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7281 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Deborah A.P. Hersman<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26713 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;William Jefferson, Jr. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72612 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Michael E. Jesanis<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18675 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;William D. Johnson<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24625 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Kevin T. Kabat<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62649 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Cassandra S. Lee<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25168 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Michael Luhrs<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59394 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;John McAvoy<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11971 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;Lloyd M. Yates<sup>(5)(7)(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;959287 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\*  |
| &nbsp;&nbsp;&nbsp;All directors and executive officers as a group (19 persons) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1761289 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\* |

---

\*Less than 1%

&nbsp;&nbsp;&nbsp;&nbsp;(1) As last reported on an amendment to statement on Schedule 13G/A filed with the SEC on behalf of The Vanguard Group on February 13, 2024. The Vanguard Group reported shared voting power with respect to 703,062 shares, sole dispositive power with respect to 51,971,358 shares and shared dispositive power with respect to 1,961,144 shares. There have been no further Schedule 13G reports filed since February 13, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;(2) As last reported on an amendment to statement on Schedule 13G/A filed with the SEC on behalf of T. Rowe Price Investment Management, Inc. on December 5, 2025. T. Rowe Price Investment Management, Inc. reported sole voting power with respect to 47,147,758 shares and sole dispositive power with respect to 50,292,275 shares. There have been no further Schedule 13G reports filed since December 5, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;(3) As last reported on an amendment to statement on Schedule 13G/A filed with the SEC on behalf of BlackRock, Inc. on September 10, 2024. BlackRock, Inc. reported sole voting power with respect to 44,147,267 shares and sole dispositive power with respect to 47,256,914 shares. There have been no further Schedule 13G reports filed since September 10, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;(4) As reported on a statement on Schedule 13G filed with the SEC on behalf of State Street Corporation on May 13, 2025. State Street Corporation reported shared voting power with respect to 15,670,335 shares and shared dispositive power with respect to 23,760,283 shares. There have been no further schedule 13G reports filed since May 13, 2025.

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|  | **32** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT     <br>

&nbsp;&nbsp;&nbsp;&nbsp;(5) Does not include RSUs issued under the 2020 Omnibus Plan or the 2010 Omnibus Plan unless the shares have been distributed or the non-employee director has the right to acquire the shares within 60 days of March 16, 2026.

&nbsp;&nbsp;&nbsp;&nbsp;(6) Includes shares held in our 401(k) Plan.

&nbsp;&nbsp;&nbsp;&nbsp;(7) These individuals participate in our Employee Stock Purchase Plan. This table excludes shares that may be distributable within 60 days of March 16, 2026. The actual number of shares that may be acquired under the Employee Stock Purchase Plan will not be determinable until the end of the offering period.

&nbsp;&nbsp;&nbsp;&nbsp;(8) Includes certain PSUs to which Mr. Yates is entitled upon a voluntary termination. The number of PSUs included is based upon target performance because actual performance is not yet known.

&nbsp;&nbsp;&nbsp;&nbsp;(9) Calculated based on the number of shares reported divided by the number of shares outstanding as of March 16, 2026.

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|:---|:---|
|  | **33** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## Compensation Discussion and Analysis ("CD&A")
In this section, we describe and discuss our executive compensation programs, including objectives and elements, as well as determinations made by the Compensation and Human Capital ("C&HC") Committee regarding the compensation decisions for the below named executive officers ("NEOs") as of December 31, 2025.

OUR NAMED EXECUTIVE OFFICERS

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| | | | | |
|:---|:---|:---|:---|:---|
| ![](ny20055306x771_yates-new.jpg)<br>**Lloyd Yates** <br>President <br>and <br>Chief Executive <br>Officer ("CEO") | ![](ny20055306x771_anderson-new.jpg)<br>**Shawn Anderson** <br>Executive Vice <br>President and <br>Chief Financial Officer ("CFO") | ![](ny20055306x771_birmingham.jpg)<br>**Melody Birmingham** <br>Executive Vice <br>President and <br>Group President, <br>Utilities | ![](ny20055306x771_jefferson-new.jpg)<br>**William Jefferson** <br>Executive Vice President, <br>Chief Operating and <br>Safety Officer | ![](ny20055306x771_luhrs-new.jpg)<br>**Michael Luhrs** <br>Executive Vice <br>President, Technology, <br>Customer and Chief <br>Commercial Officer |

---

Executive Overview<sup>\*</sup>

During 2025, NiSource delivered financial results that exceeded our adjusted EPS guidance range. We achieved this by executing a base business plan that is supported by disciplined cost management, prudent investment strategies and efficient capital deployment across our operating companies. NiSource's adjusted earnings per share ("EPS") increased, driven by regulatory execution, including the implementation of approved rate cases across our operating segments.

Customer satisfaction and employee engagement remain top priorities, supported by our commitment to continuous improvement, new technology, and a collaborative culture. Guided by Lloyd Yates, our executive leadership team advanced these priorities in 2025 and remains committed to sustained growth and long-term shareholder value while executing strategic and operational objectives.

\* See "Non-GAAP Disclosure" at the end of the Executive Overview.

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|:---|:---|
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    COMPENSATION DISCUSSION AND ANALYSIS     <br>

![](ny20055306x771_graphic2.jpg)

\* See "Non-GAAP Disclosure" at the end of the Executive Overview.

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|:---|:---|
|  | **35** |
|  | **35** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

2025 EXECUTIVE COMPENSATION PAY MIX SUMMARY

For 2025, the C&HC Committee approved a mix of pay that balances short-term and long-term incentives and focuses the efforts of our NEOs on the achievement of both short-term and long-term strategic objectives. The majority of our NEOs' total target direct compensation was in the form of equity awards to align the interests of NEOs with stockholders. The mix of key elements of compensation (expressed as a proportion of total compensation) awarded to our NEOs, including the CEO, reflects a significant portion of the total target direct compensation being at-risk, which is consistent with our pay for performance philosophy. For more information, see "Components of 2025 Executive Compensation".

The following chart shows the mix of 2025 total target direct compensation for our CEO, the 2025 average total target direct compensation for other NEOs, and the portion that is performance based and/or at-risk.

![](ny20055306x771_graphic4.jpg)

The C&HC Committee approved annualized 2025 total target direct compensation and each component of total target direct compensation for the listed NEOs as reflected in the table below.

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **NEO<sup>(1)</sup>** | **Base Salary** <br>**as of** <br>**12/31/25** <br>**($)** | **Annual Short-** <br>**Term Incentive** <br>**Target as** <br>**% of Base** <br>**Salary** | **Annual Short-** <br>**Term Incentive** <br>**Target as** <br>**of 12/31/25** <br>**($)** | **PSUs at** <br>**Target** <br>**($)** | **RSUs** <br>**($)** | **Total Target** <br>**Direct** <br>**Compensation** <br>**($)**  |
| Lloyd Yates | &nbsp;&nbsp;1200000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1560000 | 7200000 | 1800000 | &nbsp;&nbsp;&nbsp;&nbsp;11760000  |
| Shawn Anderson | &nbsp;&nbsp;675000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;506250 | 1350000 | 337500 | &nbsp;&nbsp;&nbsp;&nbsp;2868750  |
| Melody Birmingham | &nbsp;&nbsp;690000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;517500 | 1242000 | 310500 | &nbsp;&nbsp;&nbsp;&nbsp;2760000  |
| William Jefferson | &nbsp;&nbsp;650000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;487500 | 1170000 | 292500 | &nbsp;&nbsp;&nbsp;&nbsp;2600000  |
| Michael Luhrs<sup>(1)</sup> | &nbsp;&nbsp;650000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;487500 | 1170000 | 292500 | &nbsp;&nbsp;&nbsp;&nbsp;2600000 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) The table above excludes a retention award for Mr. Luhrs since it is not a part of his regular annual executive compensation. For more information regarding Mr. Luhrs' retention award, see the "Retention Award" section under "Components of 2025 Executive Compensation".

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

Our executive compensation program helps attract and retain the best leadership talent in the industry and aligns our executives' interests with those of our stockholders. We pay for performance and the C&HC Committee believes the 2025 compensation awards and outcomes were appropriate and are reflective of these remarkable achievements. Detailed results are outlined below.

*\*Non-GAAP Disclosure - This Executive Overview includes financial measures for NiSource used by our management including funds from operations (FFO)/Debt and Adjusted EPS, which are non-GAAP financial measures as defined by the SEC. The company discloses these measures because management believes they permit investors to view the company's performance using the same tools that management uses and to better evaluate the company's ongoing business performance. For GAAP diluted EPS and GAAP Net Cash Flows from Operating Activities/Debt and the reconciliation non-GAAP diluted EPS and non-GAAP FFO/Debt, see Appendix A to this Proxy Statement.* 

Components of 2025 Executive Compensation

The following section outlines the components that comprise the NEOs' compensation.

2025 BASE SALARY

Base salary provides fixed pay commensurate with each NEO's role and responsibilities. In January 2025, the C&HC Committee approved the following increases by reviewing Pay Factors, the pay competitiveness, industry experience, individual and Company performance, and the CEO's recommendation when determining the salary increases for the other NEOs. The C&HC Committee evaluated and made a recommendation to the Board of Directors who approved a base salary increase for Mr. Yates.

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| | | | | |
|:---|:---|:---|:---|:---|
| **NEO** | **Base Salary as** <br>**of 12/31/24 ($)** | **% Change** | **Date of** <br>**Increase** | **Base Salary as** <br>**of 12/31/25 ($)**  |
| Lloyd Yates | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1150000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3% | 3/1/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1200000  |
| Shawn Anderson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;650000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.8% | 3/1/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;675000  |
| Melody Birmingham | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;670000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.0% | 3/1/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;690000  |
| William Jefferson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;625000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.0% | 3/1/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;650000  |
| Michael Luhrs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3% | 3/1/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;650000 |

---

See the section entitled "Establishing Executive Compensation – Role of the Compensation & Human Capital Committee" for the Pay Factors definition.

2025 SHORT-TERM INCENTIVE ("STI") PROGRAM DESIGN AND RESULTS

Throughout 2025 NiSource drove forward our mission of delivering safe, reliable energy to our customers and increased stockholder value. We achieved $1.90 adjusted EPS (non-GAAP) which reflects 8.6% growth from 2024, had zero significant injuries or fatalities ("SIF") or Pipeline and Hazardous Materials Safety Administration ("PHMSA") reportable incidents due to operations or process failures, and continued our focus on safety and customer satisfaction.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

PLAN CONCEPT AND MECHANICS

The following formula is used to calculate each NEO's 2025 STI award.

![](ny20055306x771_graphic5.jpg)

**2025 Individual STI Target %. The C&HC Committee set the STI target percentage (expressed as a percentage of base salary) for each NEO except for Mr. Yates. For Mr. Yates, the C&HC Committee made a recommendation to the Board of Directors which approved his STI target percentage. The Pay Factors, peer group and market data are considered when setting the STI target percentage for each NEO. The C&HC Committee and Board, respectively, confirmed that the STI target percentage for the NEOs was reflective of peer group practice and was appropriately aligned with competitive market practice to help ensure retention of our executive talent.** 

**2025 STI Scorecard Performance Measures. In January 2025, the C&HC Committee approved the following performance measures for the 2025 STI program. The C&HC Committee chose these measures because they align with our commitment to deliver safe and reliable energy to our customers and drive stockholder value.** 

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| | |
|:---|:---|
| **Performance Measure** | **Description**  |
| Adjusted EPS | Adjusted EPS is a financial measure that is most representative of our profitability, is aligned with stockholder value creation and is generally consistent with our external reporting of results. The targets are reflective of our expected annual Adjusted EPS growth. <br>The definition of Adjusted EPS (a non-GAAP financial measure) is income from continuing operations determined in accordance with GAAP, including, without limitation, the impact of incentive payouts and adjusted for certain items, such as fluctuations in weather and other significant unusual events disclosed in our earnings reports (examples of which may include transaction-related costs, debt extinguishment costs or certain income tax items). Appendix A to this Proxy Statement contains a full reconciliation of GAAP EPS to Adjusted EPS.  |
| Operational Excellence | Operational Excellence emphasizes our focus on maintaining safe operations and processes for our employees and is measured against the number of SIF or PHMSA reportable incidents due to operations or process failures.  |
| Safety | The company drives safety toward top energy-industry performance in Days Away, Restricted or Transferred ("DART") rate and Preventable Vehicle Collisions ("PVC") rate. DART and PVC targets represent a year-over-year improvement methodology for advancements from the 2024 results. <br>• DART: incident rate relates to all injuries meeting Occupational Safety and Health Administration ("OSHA") reportability that require an employee to not report to work, to restrict their duties or transfer to another role due to the injury <br>• PVC: rate relates to all vehicle crashes deemed to be the responsibility of the company-employed driver <br>|
| Customer | Customer Satisfaction means our customers' needs and expectations are met. We conduct Customer Satisfaction Surveys that measure five post-transactional customer channels (Customer Service Representatives, Field Service, Interactive Voice Response, Online Interaction, and Project Work/Site Restoration) and one customer relationship survey that measures our customers' overall satisfaction with our Columbia Gas and NIPSCO brands. The targets are based upon a glidepath to achieve and maintain a top quartile in the "very satisfied" rating of customer satisfaction by 2027. |

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

2025 STI SCORECARD PERFORMANCE MEASURES, GOALS AND RESULTS

The STI pool is funded based on the formulaic incentive opportunity under the STI plan. At the end of the performance period, the result of each performance measure is calculated, and the sum of the weighted results is the STI scorecard result. The table below shows each performance measure, goals, results, weight and the percentage of target achievement. Under the STI plan, the C&HC Committee retains discretion to adjust STI awards, either on a formulaic or discretionary basis.

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Goals** | **Goals** | **Goals** | | | **Formulaic** <br>**Result as %** <br>**Target<sup>(1)</sup>** | |
| <br>**Performance** <br>**Measure** | **Threshold** | **Target** | **Stretch** | <br>**Result<sup>(1)</sup>** | <br>**Weight** | **Formulaic** <br>**Result as %** <br>**Target<sup>(1)</sup>** | <br>**Weighted %** <br>**Achievement**  |
| Adjusted EPS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.85 | $1.88 | &nbsp;&nbsp;$1.91 | &nbsp;&nbsp;&nbsp;$1.90<sup>(2)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;167% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;117%  |
| Operational Excellence | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | 1 | &nbsp;&nbsp;0 | &nbsp;&nbsp;&nbsp;0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;200% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20%  |
| Safety |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;--DART | &nbsp;&nbsp;&nbsp;&nbsp;0.59 | 0.56 | 0.50 | &nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;183% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9%  |
| &nbsp;&nbsp;&nbsp;&nbsp;--PVC | &nbsp;&nbsp;&nbsp;&nbsp;1.35 | 1.29 | 1.16 | &nbsp;&nbsp;&nbsp;&nbsp;1.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0%  |
| Customer Satisfaction | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71.0% | 73.0% | &nbsp;&nbsp;75.0% | &nbsp;&nbsp;&nbsp;69.8% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0%  |
|  |  |  |  |  | **Overall STI Scorecard** <br>**Result as % of Target** | **Overall STI Scorecard** <br>**Result as % of Target** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**146%** |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) If actual results fall between two performance levels (for example, between target and stretch goals), the incentive opportunity is determined by interpolation where threshold is 50%, target is 100% and stretch is 200%.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Appendix A to this Proxy Statement contains a full reconciliation of GAAP EPS to Adjusted EPS.

2025 INDIVIDUAL PERFORMANCE MODIFIER

The CEO assessed the performance and contributions of each of the non-CEO NEOs, assessed and made recommendations for their individual performance modifiers, and the C&HC Committee approved final STI values. In addition, the C&HC Committee assessed the performance and contributions of the CEO then made a recommendation for an STI award value to the Board. The Board also assessed the performance and contributions of the CEO and approved his STI award. When considering the individual performance modifier, factors considered include leadership effectiveness on key strategic initiatives, contributions to operational and organizational excellence, and overall assessment of financial results and value creation of the company. The table below illustrates the individual performance modifier for each NEO and the computation of the final earned award.

2025 STI AWARDS: CALCULATION OF INDIVIDUAL NEO STI AWARDS

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Target Annual Incentive** <br>**Award** | **Target Annual Incentive** <br>**Award** | | | |
| <br>**NEO** | **2025 STI** <br>**Target %** <br> | **Earnings Paid** <br>**During Year** | <br>**STI Scorecard** <br>**Results** | <br>**Individual** <br>**Performance** <br>**Modifier** | <br>**Final Annual STI** <br>**Award** <br>**$**  |
| Lloyd Yates | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130 | &nbsp;&nbsp;&nbsp;$1191667 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2261784  |
| Shawn Anderson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;$670833 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$734563  |
| Melody Birmingham | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;$686667 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$751900  |
| William Jefferson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;$645833 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$707188  |
| Michael Luhrs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;$641667 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;146% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142.3% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1000000 |

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For Mr. Luhrs, a performance modifier was applied to recognize his leadership during 2025.

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|  | **39** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

2025 LONG-TERM INCENTIVE ("LTI") PROGRAM DESIGN AND RESULTS

The C&HC Committee reviewed the Pay Factors to establish LTI values for each NEO, other than Mr. Yates. For Mr. Yates, the C&HC Committee evaluated and made a recommendation to the Board of Directors which approved the LTI value. The awarded values are included in the Summary Compensation Table.

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| | |
|:---|:---|
| For 2025, the C&HC Committee approved the following mix of LTI awards granted to our NEOs based upon a review of our peer companies' compensation practices, the importance of executive retention, the goal to align pay with performance and consideration of our compensation philosophy: | ![](ny20055306x771_piechart.jpg)<br>|

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2025 PERFORMANCE SHARE UNITS ("PSU")

#### PSU Objectives. The key objectives of our 2025 PSU grants are to:
&nbsp;&nbsp;&nbsp;&nbsp;• Motivate NEOs to achieve critical long-term financial and relative total stockholder return goals (relative to peers) and achieve critical business imperatives related to operational excellence and safety, workforce and sustainability

&nbsp;&nbsp;&nbsp;&nbsp;• Align the interests of NEOs with stockholders

&nbsp;&nbsp;&nbsp;&nbsp;• Retain NEOs

&nbsp;&nbsp;&nbsp;&nbsp;• Provide market competitive performance based LTI opportunities (when aggregated with RSU grants, which are discussed below)

PSU OVERVIEW

Given these objectives, the C&HC Committee chose the following measures because they align with our commitment to deliver safe and reliable energy to our customers and drive stockholder value.

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| | |
|:---|:---|
| **Performance Measure** | **Description**  |
| Financial: Three-Year Cumulative Adjusted EPS | Meeting earnings commitments is the foundation for long-term stockholder value creation and dividend growth. The target three-year cumulative Adjusted EPS performance goals are based upon our expected annual growth rate. For the definition and calculation of Adjusted EPS, see above under "Plan Concept and Mechanics."  |
| Financial: Three-Year Relative Total Stockholder Return ("RTSR") | This measure aligns the interests of our NEOs with those of our stockholders. RTSR is measured by ranking the Company's total stockholder return over the 3-year period ending on December 31, 2027, relative to the total stockholder return of each company within a 33-company peer group.  |
| People and Culture: Employee Engagement Index Score | The Employee Engagement Index Score is measured over the three-year performance period through an employee survey with a goal to create an enviable employee experience and continue to increase engagement results.  |
| Sustainability: Methane Emissions Reduction | The Methane Emissions Reduction goal is to reduce NiSource local distribution company (LDC) fugitive and vented methane emissions from a 2005 baseline through quantifiable emission reductions, utilizing advanced leak detection and repair as well as other quantifiable methods.  |
| Operational Excellence and Safety: Annual Operational Index Scorecard: 3 Year Average | The Safety Index Scorecard measures the effectiveness of our strategy to proactively mitigate risk. These measures are recognized as top-tier industry risk-reduction programs. The 2025 goals include the following measures: (i) In Line Inspection ("ILI") Miles, (ii) Pipe Installed, (iii) Leak Repair; (iv) System Average Interruption Frequency Index ("SAIFI"), (v) Electric Poles Inspected, and (vi) Cyber Behavior Accountability. The 2026 and 2027 goals will be determined by the C&HC Committee at the beginning of 2026 and 2027, respectively. |

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    COMPENSATION DISCUSSION AND ANALYSIS     <br>

An NEO may earn up to 200% of his or her target PSUs, depending on the level of achieved performance. Alternatively, if threshold performance is not achieved with respect to a performance measure, then no PSUs will be earned for that measure. The number of PSUs earned and vested at the end of the three-year performance period will be settled in a like number of shares of our common stock.

Annual PSUs granted in 2025 may be earned after the end of the three-year performance period, as long as the NEO is continuously employed through the end of February 2028. Special vesting rules may apply and are described in the section entitled "2025 Executive Compensation – Potential Payments upon Termination of Employment or a Change-in-Control of the Company". The number of PSUs that vest at the end of the service period will be settled in a like number of shares of our common stock.

If the Company declares a cash dividend or distribution on shares, dividend equivalent rights will be reinvested as additional PSUs that are subject to the same terms regarding vesting and forfeiture as the underlying award. The dividend equivalents will be converted to cash and paid in cash at the time the underlying PSUs are settled.

#### 2025 PSU Performance Measures. In January 2025, the C&HC Committee approved the following performance measures and goals for the 2025 PSU grants.
2025 PSU PERFORMANCE MEASURES AND GOALS

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| | | | | |
|:---|:---|:---|:---|:---|
| **Performance Measure** | **Weight** | **Threshold** | **Target** | **Stretch**  |
| **Three-Year Cumulative Adjusted EPS** | 50% | $5.94 | $6.04 | $6.16  |
| **Three-Year RTSR** | 30% | 30<sup>th</sup> Percentile | 50<sup>th</sup> Percentile | 80<sup>th</sup> Percentile |
| **Operational Excellence and Safety**  | **Operational Excellence and Safety**  | **Operational Excellence and Safety**  | **Operational Excellence and Safety**  | **Operational Excellence and Safety**  |
| Annual Operational Excellence and Safety Index Scorecard: <br>3 Year Average | 10% | See performance measures outlined in the table above.  | See performance measures outlined in the table above.  | See performance measures outlined in the table above.  |
| **Workforce and Sustainability** | **Workforce and Sustainability** | **Workforce and Sustainability** | **Workforce and Sustainability** | **Workforce and Sustainability** |
| Employee: <br>Engagement Index Score | 5% | 82% | 84% | 86%  |
| Environmental: <br>Methane Emissions Reductions <br>(% Reduction of Fugitive and <br>Vented Methane Emissions from 2005) | 5% | 46% | 48% | 52% |

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2025 RESTRICTED STOCK UNITS ("RSU")

RSUs reward long-term service, help to retain NEOs over a multi-year service period, and align the interests of our NEOs with those of our stockholders.

Annual RSUs granted in 2025 will vest at the end of the three-year performance period, as long as the NEO is continuously employed through the end of February 2028. Special vesting rules may apply and are described in the section entitled "2025 Executive Compensation – Potential Payments upon Termination of Employment or a Change-in-Control of the Company". The RSUs that vest at the end of the service period will be settled in a like number of shares of our common stock.

If the Company declares a cash dividend or distribution on shares, the NEOs will be entitled to receive a cash payment equal to the amount of the cash dividend, subject to the same terms regarding vesting and forfeiture as the underlying award.

RETENTION AWARD

To recognize his substantial contributions and to encourage his continued employment, Mr. Luhrs was awarded an RSU grant on January 22, 2025 under the Company's long-term incentive program with a grant date fair value of $2,000,000 that vests 33% on January 22, 2026, 33% on January 22, 2027, and 34% on January 22, 2028, subject to his continued employment.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    COMPENSATION DISCUSSION AND ANALYSIS     <br>

FINAL SETTLEMENT OF 2023-2025 PSU AWARDS

In 2023, the C&HC Committee approved a PSU award to the NEOs, other than the CEO, and the Full Board approved a PSU award to the CEO. The NEOs earned PSUs at 190% of target.

#### Formula Used to Determine LTI Results. The following formula was used to calculate LTI results.
![](ny20055306x771_graphic6.jpg)

The table below illustrates the metrics, goals and respective performance results.

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Goals**  | **Goals**  | **Goals**  | **Goals**  | **Goals**  | | |
| <br>**Measure** | **Threshold** | **Target** | **Stretch** | **Result** | **Weight** | <br>**Formulaic** <br>**Result as %** <br> <br>**Target** | <br>**Weighted %** <br>**Achievement**  |
| Cumulative Adjusted EPS  | $4.86 | $5.01 | $5.16 | $5.25 | 50% | 200% | 100%  |
| rTSR<sup>(1)</sup> (percentile)  | 30<sup>th</sup> | 50<sup>th</sup> | 80<sup>th</sup> | 97<sup>th</sup> | 25% | 200% | 50%  |
| Annual Operational Excellence Index Scorecard: 3 Year Average | See performance measures <br>described below<sup>(2)</sup>  | See performance measures <br>described below<sup>(2)</sup>  | See performance measures <br>described below<sup>(2)</sup>  | 1.05 | 10% | 194% | 19%  |
| Employee Engagement Index Score<sup>(3)</sup>  | 77% | 79% | 81% | 79% | 5% | 100% | 5%  |
| Economic Inclusion<sup>(4)</sup>  | 22% | 25% | 30% | 26% | 5% | 120% | 6%  |
| Greenhouse Gas Emission Reduction<sup>(5)</sup>: Retire Schahfer Generating Station coal units and reduce NI LDC fugitive and vented methane emissions by the following percent: | <15.3% | 15.3% | 34% | 41.6% | 5% | 200% | 10%  |
|  |  |  |  |  | **Final LTI Result** <br>**as % of Target** | **Final LTI Result** <br>**as % of Target** | **190%** |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) For purposes of calculating RTSR achievement, the Company utilized a performance peer group consisting of the following 31 companies: Alliant Energy Corp, Ameren Corporation, American Electric Power Company, Inc., Atmos Energy Corporation, Avista Corporation, Black Hills Corporation, CenterPoint Energy, Inc., CMS Energy Corporation, Consolidated Edison, Inc., Dominion Energy, DTE Energy Company, Inc, Duke Energy Corporation, Edison International, Entergy Corporation, Eversource Energy, FirstEnergy Corp., New Jersey Resources Corporation, NextEra Energy, Inc., OGE Energy Corp., ONE Gas, Inc., Pinnacle West Capital Corporation, PNM Resources, Inc., PPL Corporation, Public Service Enterprise Group Incorporated, Sempra, The Southern Company, Southwest Gas Holdings, Inc., Spire Inc., UGI Corporation, WEC Energy Group Inc, and Xcel Energy Inc.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Measures the effectiveness of our strategy, over a three-year performance period, to proactively mitigate risk. These measures are recognized as top-tier industry risk-reduction programs. The goals included the following measures: (i) ILI Miles, (ii) Pipe Installed, (iii) SAIFI, (iv) electric poles inspected, (v) Cross Bore Inspections and (vi) Cyber Behavior Accountability.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Measures employee engagement throughout a three-year period.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Measures Company spend on Tier 1 and Tier 2 diverse suppliers as a proportion of total supplier spend.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Schahfer Generating Station coal Units 17 and 18 were scheduled to retire by 2025 (to reduce CO2 emissions by 11.9 million tonnes), with an exception provided if any of these units are required to operate for reliability purposes beyond 2025. On December 23, 2025, Northern Indiana Public Service Company ("NIPSCO") received a federal directive ordering NIPSCO to continue operating Units 17 and 18 beyond the previously scheduled retirement date of December 31, 2025, therefore this exception was applied and the final results are based solely on the achievement of the methane emissions reductions goal; this is consistent with an exemption that was applied to the same goal within the 2022-2024 LTI program and results that the Committee approved January 2025.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    COMPENSATION DISCUSSION AND ANALYSIS     <br>

Annual PSUs granted in 2023 vested after the end of the three-year performance period, as long as the NEO was continuously employed through February 27, 2026. Special vesting rules may apply and are described in the section entitled "2025 Executive Compensation – Potential Payments upon Termination of Employment or a Change-in-Control of the Company". The following table shows the target number of shares subject to the 2023 PSUs as well as the number of shares of common stock that vested pursuant to the terms of the 2023 PSUs.

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| | | |
|:---|:---|:---|
| **NEO** | **Target Number of 2023 PSUs** <br>**Awarded** | **Number of 2023 PSUs** <br>**Vested**  |
| Lloyd Yates | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;145243 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;275962  |
| Shawn Anderson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29702 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56434  |
| Melody Birmingham | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37418 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71094  |
| William Jefferson | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31907 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60623  |
| Michael Luhrs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61811 |

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Establishing Executive Compensation

2025 SAY-ON-PAY RESULTS

The C&HC Committee considers the stockholders' views when making compensation decisions. In 2025, approximately 97% of the votes cast by our stockholders were voted in favor of our say-on-pay proposal at our 2025 annual meeting. No changes were made to the design of our executive compensation program in response to the 2025 say-on-pay advisory vote.

COMPENSATION PHILOSOPHY AND OBJECTIVES

Our executive compensation programs are designed to attract, reward and retain highly talented individuals with diverse backgrounds and experiences who are committed to deliver safe, reliable energy to our customers. We do this by focusing on the following:

*Pay for performance - A significant portion of NEO compensation is variable and directly linked to individual and Company performance, including operational and financial performance that drives the creation of long-term stockholder value.* 

*Commitment to strategic priorities - Compensation opportunities are directly linked to the executives' commitment to safety, people & culture, operational excellence, sustainability, customer experience, and financial stewardship which are incorporated into specific and measurable metrics in our incentive programs.* 

*Market driven competitive compensation - Compensation is viewed in relation to peers as a starting point, with flexibility to adjust compensation elements based on a range of factors, including individual job requirements and scope, business needs, experience, qualifications and performance to attract and retain critical talent.* 

*Long term focus - Compensation is heavily weighted to long-term stock-based components to ensure that a significant portion of compensation opportunity is aligned with our long-term strategy and stockholder value creation. Short- and long-term incentives are designed with multi-year business plans in mind.* 

ROLE OF THE COMPENSATION & HUMAN CAPITAL COMMITTEE

The C&HC Committee is responsible for establishing, implementing and monitoring our executive compensation program objectives and assuring alignment with our business objectives. In overseeing our executive compensation programs, the C&HC Committee identifies and approves performance measures and goals under our STI and LTI programs. Additionally, the C&HC Committee approves annual long-term equity incentive awards and periodic long-term equity incentive awards granted to newly hired and promoted Executive Officers. The C&HC Committee also oversees the administration of our equity plans.

The C&HC Committee evaluates and determines the compensation of our Executive Officers. The C&HC Committee reviews the performance and compensation of our CEO and our Executive Officers each year with input from Meridian and apprises the Board accordingly. For our CEO, the C&HC Committee evaluates CEO performance and submits its compensation recommendations to the independent members of the Board for review and approval. When considering changes in compensation for our Executive Officers, including the NEOs, the C&HC Committee considers input from the CEO, the Executive Vice President, Chief Human Resources Officer and Meridian. Our CEO is not involved in making recommendations with respect to his compensation.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

The C&HC Committee also has continuous involvement with our human resources talent management initiatives regarding our CEO and our executive leadership team. The C&HC Committee also leads our development and succession efforts by providing strategic direction as we identify key executive skill and capability talent priorities. The C&HC Committee reviews the performance of our CEO and executive leadership team against leadership skills and capability requirements designed to identify, attract and develop highly-qualified executives that promote continuous learning; foster workplace connections; deliver safety, reliability and customer service performance improvements; and ultimately support our long-term strategy to build value for all our stakeholders, including our customers, employees, communities and stockholders.

The C&HC Committee is responsible for annually reviewing and approving (or, in the case of our CEO, recommending to the independent members of the Board for approval) each element of total target direct compensation for our executive officers including our NEOs. All of the executive compensation decisions made by the C&HC Committee were based primarily on the following Pay Factors:

&nbsp;&nbsp;&nbsp;&nbsp;• Corporate performance and attainment of our established business and financial goals

&nbsp;&nbsp;&nbsp;&nbsp;• Competitiveness of our compensation program (each NEO's total target direct compensation and each element of compensation) versus market data of our Compensation Comparator Group

&nbsp;&nbsp;&nbsp;&nbsp;• Executive officer's/NEO's position, experience, role, responsibilities and performance relative to achievement of business goals

&nbsp;&nbsp;&nbsp;&nbsp;• Internal pay equity

&nbsp;&nbsp;&nbsp;&nbsp;• Mix of variable at-risk pay versus fixed pay

&nbsp;&nbsp;&nbsp;&nbsp;• Mix of cash versus equity pay

INDEPENDENT COMPENSATION CONSULTANT

For 2025, the C&HC Committee engaged the services of Meridian Compensation Partners as its independent compensation consultant to advise it with respect to executive compensation design, comparative compensation practices and compensation matters relating to the Board. The C&HC Committee takes recommendations from Meridian into consideration along with its evaluation of the individual performance of each executive officer.

Each year, the C&HC Committee evaluates the independence and quality of the services provided by its independent compensation consultant. In reviewing Meridian's engagement for 2025, the C&HC Committee considered the factors set forth in SEC Rule 10C-1(b)(4) and the applicable NYSE rules and determined that Meridian was independent and there were no conflicts of interest with respect to Meridian's work for the C&HC Committee.

COMPETITIVE MARKET REVIEW

In connection with its compensation decision making, the C&HC Committee reviews the executive compensation practices in effect at other companies in the Compensation Comparator Group. The compensation data provided by Meridian and other third-party data is used to obtain a general understanding of current market practices when designing our executive compensation program – it is not used exclusively, but rather as a reference point in conjunction with other factors.

The Compensation Comparator Group consists of a mix of gas, electric and multi-line utilities that are operationally similar to us, with which we compete for similar executive talent, and with similar trailing 12-month revenue and market capitalization data. The Compensation Comparator Group for the purpose of evaluating 2025 compensation practices is shown below. The below comparator group reflects the removal of Entergy Corporation compared to the prior year disclosure.

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| | | |
|:---|:---|:---|
| **Compensation Comparator Group** |  |  |
| Alliant Energy Corporation | Dominion Energy, Inc. | ONE Gas, Inc. |
| Ameren Corporation | DTE Energy Company | PPL Corporation |
| American Electric Power Company, Inc. | Evergy | Public Service Enterprise Group |
| Atmos Energy Corporation | Eversource Energy | Sempra Energy |
| Black Hills Corporation | FirstEnergy Corporation | Southwest Gas Holdings, Inc. |
| CenterPoint Energy, Inc. | New Jersey Resources Corporation | Spire, Inc. |
| CMS Energy Corporation | OGE Energy Corp. | WEC Energy Group, Inc. |

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|  | **44** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

OTHER COMPENSATION AND BENEFITS

Our NEOs may elect to participate in an executive deferred compensation plan, have change-in-control agreements, and are eligible for an executive severance policy. In addition, we provide our NEOs with a limited number of perquisites and other broad-based employee benefits that are generally extended to our entire employee population. We believe that these other forms of compensation and benefits are aligned with our compensation objectives and are generally comparable to those that are provided to similarly situated executives at other comparable companies.

**Severance and Change-in-Control Benefits. Each NEO is covered under a separate change-in-control and termination agreement ("CIC Agreement"). The CIC Agreements are intended to ensure that the NEOs continue to apply thoroughly objective judgment to appropriately safeguard stockholder value and maximize investor return in relation to any potential change-in-control. The CIC Agreements provide cash severance benefits upon a double-trigger (meaning there must be both a qualifying change-in-control and termination of employment) and do not include any "gross-up" payments to cover an executive's excise taxes incurred with respect to the receipt of payments in connection with a change-in-control. Each NEO is subject to our executive severance policy.** 

Our 2020 Omnibus Plan provides for double-trigger vesting for equity awards that are assumed or replaced by an acquiring company upon a change-in-control. In the event equity awards are not assumed or replaced in a change-in-control, then the outstanding equity awards will vest upon the occurrence of such change-in-control. For further information regarding the benefits to be received upon termination of employment or change-in-control, see the section entitled "2025 Executive Compensation – Potential Payments upon Termination of Employment or a Change-in-Control of the Company".

**Perquisites. Perquisites are not a principal element of our executive compensation program. We provide a limited number of perquisites to each NEO. We do not reimburse NEOs for the payment of individual income taxes they might incur in connection with their receipt of these benefits. For information regarding 2025 perquisites, see the 2025 Summary Compensation Table and footnote (5) to that table.** 

**Deferred Compensation Plan. Eligible executives, including the NEOs, may elect to defer between 5% and 80% of their base salary and/or STI payout under our Executive Deferred Compensation Plan (the "Deferred Compensation Plan"). The Deferred Compensation Plan provides an opportunity for eligible executives to defer their cash compensation without regard to the limits imposed by the Internal Revenue Service ("IRS") for amounts that may be deferred under our 401(k) Plan. For information regarding the Deferred Compensation Plan, see the 2025 Non-Qualified Deferred Compensation table and accompanying narrative.** 

**Savings Programs. The NEOs are eligible to participate in the same tax-qualified 401(k) Plan as most employees and in a non-qualified defined contribution plan (the "Savings Restoration Plan") maintained for eligible executives. The 401(k) Plan includes a Company match and a Company profit sharing contribution for most employees between 0.5% and 2.0% of the employee's eligible earnings based on achievement of the overall STI results. In addition, for salaried employees hired after January 1, 2010 and non-union non-exempt employees hired after January 1, 2013, the 401(k) Plan now includes a 4.5% Company contribution to the employee accounts. The Savings Restoration Plan provides for Company contributions in excess of IRS limits under the 401(k) Plan for eligible employees, including the NEOs. For information regarding the Savings Restoration Plan, see the 2025 Non-Qualified Deferred Compensation table and accompanying narrative.** 

**Health and Welfare Benefits. We also provide the NEOs other broad-based benefits such as medical, dental, life insurance and long-term disability coverage on the same terms and conditions to all employees.** 

STOCK OWNERSHIP AND RETENTION GUIDELINES

Our executive leadership team, which includes the NEOs, and other senior leaders are subject to stock ownership and retention guidelines. We maintain these guidelines to ensure that our executive leadership and senior leaders maintain a significant investment in our stock, which in turn helps to align the interests of our executive leadership and senior leaders with those of our stockholders.

Our executive leadership team and senior leaders are generally expected to satisfy their applicable ownership guideline (as described below) within five years of becoming subject to the guidelines. Once applicable share ownership levels are satisfied, the senior executive must continue to own enough shares to remain in compliance. Until such time as the applicable stock ownership guideline is satisfied, the CEO and Executive Vice Presidents are required to hold at least 50% of the shares of common stock received upon the vesting of equity awards. As of the record date, the NEOs are on a path to achieving the applicable ownership guideline within the five-year requirement. Shares counted toward ownership targets include common stock held and unvested RSUs.

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|  | **45** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    COMPENSATION DISCUSSION AND ANALYSIS     <br>

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| | |
|:---|:---|
| **Executive Level** | **Stock Ownership Level**  |
| CEO | 6x base salary  |
| Executive Vice President | 3x base salary  |
| Senior Vice President | 2x base salary |

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RISK MANAGEMENT POLICIES AND GUIDELINES

**Trading Windows/Trading Plans. We restrict the ability of directors, executive officers and employees who work in designated areas to freely trade in our common stock because of their periodic access to our material non-public information. Under our insider trading policy, also referred to as our "Securities Transaction Compliance Policy," such persons are prohibited from trading in our securities during quarterly blackout periods, and at such other times as the General Counsel may deem appropriate. We believe our policy is reasonably designed to promote compliance with insider trading laws, rules and regulations and the exchange listing standards applicable to us. Our policy is filed as exhibit 19.1 to our 2025 Annual Report on Form 10-K.** 

**Anti-Hedging Policy/Pledging. Under our Securities Transaction Compliance Policy, all directors, executive officers and employees who work in designated areas are prohibited from engaging in short sales of our equity securities or buying or selling puts or calls or other options on our securities. We do not have such a policy for employees who work in areas other than the designated areas.** 

**Compensation Recovery for Misconduct and in the Event of a Financial Restatement. Included in our 2020 Omnibus Plan is a "clawback" provision that states the employee shall reimburse the Company amounts received under STI and LTI awards if we are required to prepare an accounting restatement as a result of the employee's misconduct. Our Board has also adopted a standalone executive compensation recoupment policy consistent with the requirements of the Securities Exchange Act of 1934, as amended (the "Exchange Act") Rule 10D-1 and the NYSE listing standards thereunder, which requires the Company to recover "excess" incentive compensation received by NEOs due to a financial restatement (except in certain limited cases permitted by regulation) to help ensure that incentive compensation is paid based on accurate financial and operating data, and the correct calculation of performance against incentive targets.** 

**Grant Practices Specific to Stock Options. We do not currently grant stock options as part of our equity compensation programs. If stock options were to be granted in the future, the Company would not grant such options in anticipation of the release of material non-public information that is likely to result in changes to the price of our common stock.** 

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## Compensation and Human Capital Committee Report
The C&HC Committee of the Board (the "Committee") has furnished the following report in accordance with rules adopted by the Securities and Exchange Commission.

The Committee states that it reviewed and discussed with management the Company's Compensation Discussion and Analysis contained in this Proxy Statement.

Based upon the review and discussions referred to above, the Committee recommended to the Board that the Compensation Discussion and Analysis be included in this Proxy Statement and the Company's 2025 Annual Report on Form 10-K.

This report is submitted on behalf of the members of the Committee:

<br> Peter A. Altabef, Chair Deborah A. Henretta Deborah A.P. HersmanJohn McAvoy <br>

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**

## Compensation and Human Capital Committee Interlocks and Insider Participation
During 2025, Messrs. Altabef, Bunting, Butler and McAvoy and Mses. Henretta and Hersman served on the C&HC Committee. None of these persons had ever been an officer or employee of the Company or any of its subsidiaries while serving on the C&HC Committee. No executive officer of the Company served on the board of directors or compensation committee of any other entity that had one or more executive officers who served as a member of the C&HC Committee during 2025. On May 12, 2025, Messrs. Bunting and Butler departed the C&HC Committee and Mr. Altabef and Ms. Hersman joined the C&HC Committee.

## Assessment of Risk
We perform an annual risk assessment of our compensation programs. We concluded that risks arising from our compensation programs are *not* reasonably likely to have a material adverse effect on the Company, based on the following:

&nbsp;&nbsp;&nbsp;&nbsp;• Executive/Board Oversight—Our executive leadership and Board regularly monitor our programs and people to ensure decisions are made with integrity and in the best long-term interests of the Company;

&nbsp;&nbsp;&nbsp;&nbsp;• Strategic Consistency—Our compensation program is aligned with our goals without promoting excessive risk;

&nbsp;&nbsp;&nbsp;&nbsp;• Sound Performance Criteria—Performance measures for incentive awards are consistent with long-term stockholder value and operational excellence; measures and underlying goals are approved by the C&HC Committee of the Board;

&nbsp;&nbsp;&nbsp;&nbsp;• Long-term Focus—Executive compensation is weighted toward LTI, aligning executives with long-term results and stockholders;

&nbsp;&nbsp;&nbsp;&nbsp;• Performance Focus—LTI awards for executives are predominately performance-based;

&nbsp;&nbsp;&nbsp;&nbsp;• Stock Ownership Guidelines—Executives are subject to stock ownership guidelines set by the C&HC Committee; this further reinforces the need for a long-term view in decision making;

&nbsp;&nbsp;&nbsp;&nbsp;• Operational Excellence and Safety—Incentive compensation is partially tied to safety and other operational metrics to encourage a culture of safety and motivate the prioritization of safe operations; and

&nbsp;&nbsp;&nbsp;&nbsp;• Clawback Policy—Policies are in place to recoup compensation and help ensure that incentive compensation is paid based on accurate financial and operating data, and the correct calculation of performance against incentive targets.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**

## 2025 Executive Compensation
The following table summarizes compensation for services to the Company and its affiliates earned by or paid to each of the NEOs during 2025. In accordance with SEC disclosure rules, the stock awards reported in the table below are reported based on the aggregate grant date fair value and do not represent the amounts actually realized by the NEOs. The actual values realized by the NEOs, if any, are impacted by the Company's performance against the pre-established performance goals for PSUs and the Company's stock price at settlement for all stock awards.

2025 Summary Compensation Table

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Name and** <br>**Principal Position** | **Year** | **Salary** <br>**($)<sup>(1)</sup>** | **Bonus** <br>**($)<sup>(2)</sup>** | **Stock** <br>**Awards** <br>**($)<sup>(3)</sup>** | **Non-equity** <br>**Incentive Plan** <br>**Compensation** <br>**($)<sup>(4)</sup>** | **All Other** <br>**Compensation** <br>**($)<sup>(5)</sup>** | **Total** <br>**($)**  |
| **Lloyd Yates**<br>**President and CEO** | 2025 | 1191667 |  | 9619864 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2261784 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;124485 | 13197800  |
| **Lloyd Yates**<br>**President and CEO** | 2024 | 1133334 |  | 8266041 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3230100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;155495 | 12784970  |
| **Lloyd Yates**<br>**President and CEO** | 2023 | 1041667 |  | 5208422 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2500000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;466592 | 9216680  |
| **Shawn Anderson**<br>**EVP and CFO** | 2025 | 670833 |  | 1818069 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;734563 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72958 | 3296423  |
| **Shawn Anderson**<br>**EVP and CFO** | 2024 | 633333 |  | 3562248 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;925000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74657 | 5195238  |
| **Shawn Anderson**<br>**EVP and CFO** | 2023 | 518478 |  | 1137093 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;809798 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95367 | 2560736  |
| **Melody Birmingham** <br>**EVP and Group President, Utilities** | 2025 | 686667 |  | 1672630 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;751900 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56610 | 3167807  |
| **Melody Birmingham** <br>**EVP and Group President, Utilities** | 2024 | 665883 |  | 1583297 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;975000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77285 | 3301416  |
| **Melody Birmingham** <br>**EVP and Group President, Utilities** | 2023 | 641667 |  | 1335553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;818125 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112704 | 2908049  |
| **William Jefferson** <br>**EVP, Chief Operating and Safety Officer** | 2025 | 645833 |  | 1575681 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;707188 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;69778 | 2998480  |
| **William Jefferson** <br>**EVP, Chief Operating and Safety Officer** | 2024 | 612500 |  | 1476953 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;925000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74033 | 3088486  |
| **William Jefferson** <br>**EVP, Chief Operating and Safety Officer** | 2023 | 537500 |  | 1138849 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;805242 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96247 | 2577838  |
| **Michael Luhrs** <br>**EVP, Technology, Customer and Chief Commercial Officer** | 2025 | 641667 |  | 3595266 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59430 | 5296363  |
| **Michael Luhrs** <br>**EVP, Technology, Customer and Chief Commercial Officer** | 2024 | 591667 |  | 1417877 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;975000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55558 | 3040101  |
| **Michael Luhrs** <br>**EVP, Technology, Customer and Chief Commercial Officer** | 2023 | 422464 | 350000 | 1443585 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;538641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;171754 | 2926443 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Any salary deferred at the election of the NEO is reported as salary in the year in which such salary was earned.

&nbsp;&nbsp;&nbsp;&nbsp;(2) The amount reported in this column for 2023 represents a $350,000 sign on bonus paid to Mr. Luhrs.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Amounts reported in this column for 2025 represent the aggregate grant date fair value, computed in accordance with FASB ASC Topic 718, with respect to the PSUs and RSUs granted in 2025. For information on the valuation assumptions used in these computations, see Note 17 to our consolidated financial statements included in our 2025 Annual Report on Form 10-K. The PSUs are subject to performance conditions; therefore, the value reported in this column for these awards is based upon the target outcome of such conditions.

The following table shows the number of PSU and RSU shares awarded in 2025 and the value of the PSUs at the grant date assuming that the highest level of performance conditions are achieved.

---

| | | | |
|:---|:---|:---|:---|
| **NEO** | **2025 Number of** <br>**RSUs Awarded** | **2025 Number of** <br>**PSUs Awarded** | **Maximum PSU** <br>**Fair Value**  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47872 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;191490 | &nbsp;&nbsp;&nbsp;&nbsp;$17436869  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8933 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35733 | &nbsp;&nbsp;&nbsp;&nbsp;$3295343  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8219 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32874 | &nbsp;&nbsp;&nbsp;&nbsp;$3031704  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7742 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30969 | &nbsp;&nbsp;&nbsp;&nbsp;$2856004  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60680 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30969 | &nbsp;&nbsp;&nbsp;&nbsp;$4875589 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(4) Amounts reported in this column represent each NEOs 2025 STI payout. For a discussion of the STI awards, please see the "2025 Short-Term Incentive ("STI") Program Design and Results" section in the CD&A under "Components of 2025 Executive Compensation" above.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    2025 EXECUTIVE COMPENSATION     <br>

&nbsp;&nbsp;&nbsp;&nbsp;(5) The table below provides a breakdown of the amounts shown in the "All Other Compensation" column for each NEO in 2025.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Other Compensation**  | **Other Compensation**  | **Other Compensation**  | **Other Compensation**  |
| <br>**Name** | **Perquisites** <br>**and** <br>**Personal Benefits<sup>(a)</sup>** <br>**($)** | **Company** <br>**Contributions** <br>**To 401(k)** <br>**Plan<sup>(b)</sup>**<br>**($)** | **Company** <br>**Contributions** <br>**To Savings** <br>**Restoration** <br>**Plan<sup>(c)</sup>**<br>**($)** | **Total** <br>**($)**  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63125 | 124485  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17535 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24063 | 72958  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25250 | 56610  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16230 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22188 | 69778  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6195 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21875 | 59430 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) All perquisites are valued based on the aggregate incremental cost to the Company, as required by applicable SEC regulations. Please see the "Other Compensation and Benefits – Perquisites" section above in the CD&A under "Establishing Executive Compensation" for additional information about the perquisites we provide to the NEOs. For Messrs. Anderson, Jefferson, and Luhrs, the perquisite amount listed above represents the cost of financial planning and tax services. For Mr. Yates, the perquisite amount listed above represents the value of his personal use of Company or leased aircraft ($30,000). The incremental cost to the Company of Mr. Yates' personal use of Company aircraft is determined based on calculating the average cost per hour to operate the aircraft taking into account direct costs such as fuel costs, trip-related maintenance, universal weather-monitoring costs, on-board catering, landing/ramp fees, and other miscellaneous variable costs, and multiplying the calculated average cost by the time of each trip assessed. Fixed costs which do not change based on usage, such as pilots' salaries, the amortized costs of the aircraft, and the cost of maintenance not related to trips are excluded. With respect to flights on a third-party leased or chartered airplane, aggregate incremental cost equals the amount that the third-party charges the Company for such trip. NEOs are also permitted to invite their spouse or other guests to accompany them on business trips when space is available.

&nbsp;&nbsp;&nbsp;&nbsp;(b) This column reflects Company matching contributions, profit-sharing contributions, and a Company non-elective contribution of 4.5% of eligible earnings under the 401(k) Plan. The 401(k) Plan is a tax-qualified defined contribution plan, as described above in the "Other Compensation and Benefits – Savings Programs" section in the CD&A under "Establishing Executive Compensation".

&nbsp;&nbsp;&nbsp;&nbsp;(c) This column reflects Company matching contributions, profit-sharing contributions, and a Company non-elective contribution of 4.5% of eligible earnings in excess of IRS limits to the Savings Restoration Plan. The Savings Restoration Plan is a non-qualified defined contribution plan, as described above in the "Other Compensation and Benefits – Savings Programs" section in the CD&A under "Establishing Executive Compensation" above, and in the narrative following the 2025 Non-Qualified Deferred Compensation Table.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    2025 EXECUTIVE COMPENSATION     <br>

2025 Grants of Plan-Based Awards

The following table provides information for plan-based awards granted under the 2020 Omnibus Plan to the NEOs in 2025.

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Grant** <br>**Date** | **Date** <br>**Approved** | **Estimated Future Payouts** <br>**Under Non-Equity Incentive** <br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts** <br>**Under Non-Equity Incentive** <br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts** <br>**Under Non-Equity Incentive** <br>**Plan Awards<sup>(1)</sup>** | **Estimated Future Payouts** <br>**Under Equity Incentive** <br>**Plan Awards<sup>(2)</sup>** | **Estimated Future Payouts** <br>**Under Equity Incentive** <br>**Plan Awards<sup>(2)</sup>** | **Estimated Future Payouts** <br>**Under Equity Incentive** <br>**Plan Awards<sup>(2)</sup>** | **All Other** <br>**Stock** <br>**Awards** <br>**Number of** <br>**Shares** <br>**of Stock** <br>**or Units** <br>**(#)<sup>(3)</sup>** | **Grant Date** <br>**Fair Value** <br>**of Stock** <br>**and Option** <br>**Awards** <br>**($)<sup>(4)</sup>**  |
| **Name** | **Grant** <br>**Date** | **Date** <br>**Approved** | **Threshold** <br>**($)** | **Target** <br>**($)** | **Maximum** <br>**($)** | **Threshold** <br>**(#)** | **Target** <br>**(#)** | **Maximum** <br>**(#)** | **All Other** <br>**Stock** <br>**Awards** <br>**Number of** <br>**Shares** <br>**of Stock** <br>**or Units** <br>**(#)<sup>(3)</sup>** | **Grant Date** <br>**Fair Value** <br>**of Stock** <br>**and Option** <br>**Awards** <br>**($)<sup>(4)</sup>**  |
| **Lloyd** <br>**Yates** |  |  | &nbsp;&nbsp;&nbsp;780000 | 1560000 | 3120000 | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;—  |
| **Lloyd** <br>**Yates** | 1/23/2025 | 1/23/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;95745 | 191490 | &nbsp;&nbsp;&nbsp;382980 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;7817005  |
| **Lloyd** <br>**Yates** | 1/23/2025 | 1/23/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47872 | &nbsp;&nbsp;1802860  |
| **Shawn** <br>**Anderson** |  |  | &nbsp;&nbsp;&nbsp;253125 | 506250 | 1012500 | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;—  |
| **Shawn** <br>**Anderson** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;17867 | 35733 | &nbsp;&nbsp;&nbsp;71466 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;1477275  |
| **Shawn** <br>**Anderson** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8933 | &nbsp;&nbsp;340794  |
| **Melody** <br>**Birmingham** |  |  | &nbsp;&nbsp;&nbsp;258750 | 517500 | 1035000 | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;—  |
| **Melody** <br>**Birmingham** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;16437 | 32874 | &nbsp;&nbsp;&nbsp;65748 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;1359075  |
| **Melody** <br>**Birmingham** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8219 | &nbsp;&nbsp;313555  |
| **William** <br>**Jefferson** |  |  | &nbsp;&nbsp;&nbsp;243750 | 487500 | 975000 | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;—  |
| **William** <br>**Jefferson** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;15485 | 30969 | &nbsp;&nbsp;&nbsp;61938 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;1280324  |
| **William** <br>**Jefferson** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7742 | &nbsp;&nbsp;295357  |
| **Michael** <br>**Luhrs** |  |  | &nbsp;&nbsp;&nbsp;243750 | 487500 | 975000 | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;—  |
| **Michael** <br>**Luhrs** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;15485 | 30969 | &nbsp;&nbsp;&nbsp;61938 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;1280324  |
| **Michael** <br>**Luhrs** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7742 | &nbsp;&nbsp;295357  |
| **Michael** <br>**Luhrs** | 1/22/2025 | 1/22/2025 | &nbsp;&nbsp;&nbsp;— |  |  | &nbsp;&nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52938 | &nbsp;&nbsp;2019585 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) The information in the "Threshold", "Target", and "Maximum" columns reflects potential payouts based on the performance targets set under the STI program excluding any individual performance modifiers that may be applied. The amount reported in the "Threshold" column represents the threshold level of achievement of each incentive plan goal. The amount reported in the "Target" column represents target achievement of each goal. The amount reported in the "Maximum" column represents maximum achievement of each goal. The amounts actually paid based on Company performance appear in the "Non-Equity Incentive Plan Compensation" column of the 2025 Summary Compensation Table. For a discussion of the STI awards, please see the "2025 Short-Term Incentive ("STI") Program Design and Results" section in the CD&A under "Components of 2025 Executive Compensation" above.

&nbsp;&nbsp;&nbsp;&nbsp;(2) The information in the "Threshold", "Target", and "Maximum" columns reflects the potential share payouts under the portion of the 2025 LTI award granted in the form of PSUs. Under the terms of the PSU awards, the PSUs will be earned based on continued employment and the achievement of pre-determined performance goals. The amount reported in the "Threshold" column represents the minimum level of the PSUs that may vest based on the achievement of the threshold level of achievement for each goal. The amount reported in the "Target" column represents target achievement of each goal. The amount reported in the "Maximum" column represents maximum achievement of each goal. For further information regarding these awards, please see the "2025 Long-Term Incentive ("LTI") Program Design and Results" section in the CD&A under "Components of 2025 Executive Compensation" above.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Represents the portion of the 2025 LTI award granted in the form of RSUs. For further information regarding these awards, please see the "2025 Long-Term Incentive ("LTI") Program Design and Results" section in the CD&A under "Components of 2025 Executive Compensation" above.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Amounts reported in this column represent the aggregate grant date fair value, computed in accordance with FASB ASC Topic 718, with respect to the PSUs and RSUs granted in 2025. All the PSUs are subject to performance conditions and the values reported in this column for the PSU awards are based upon the probable outcome of such conditions (i.e., target performance). The values set forth in this table may not correspond to the actual values that may ultimately be realized by the NEOs upon vesting and settlement.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    2025 EXECUTIVE COMPENSATION     <br>

Outstanding Equity Awards at 2025 Fiscal Year-End

The following table sets forth information at fiscal year-end concerning outstanding grants of equity awards to the NEOs. At fiscal year-end, none of our NEOs held any outstanding option awards with respect to the Company.

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Name** | **Number of** <br>**Shares or** <br>**Units of Stock** <br>**That Have** <br>**Not Vested** <br>**(#)** | **Market Value of** <br>**Shares or** <br>**Units of Stock** <br>**That Have** <br>**Not Vested** <br>**($)<sup>(1)</sup>** | **Equity Incentive** <br>**Plan Awards:** <br>**Number of Unearned** <br>**Shares, Units or Other** <br>**Rights That Have** <br>**Not Vested** <br>**(#)** | **Equity Incentive** <br>**Plan Awards:** <br>**Market or Payout** <br>**Value of Unearned** <br>**Shares, Units or Other** <br>**Rights That Have** <br>**Not Vested** <br>**($)<sup>(2)</sup>**  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36311<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1516347 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62598<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2614092 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47872<sup>(9)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1999135 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;320680<sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13391586  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;532634<sup>(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22242800  |
| **Lloyd Yates** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;393534<sup>(10)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16433959  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7342<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;306602 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3142<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;131210 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11615<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;485042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8933<sup>(9)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;373042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53217<sup>(11)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2222342 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37825<sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1579592  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27500<sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1148391  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;98845<sup>(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4127769  |
| **Shawn Anderson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;73435<sup>(10)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3066660  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9355<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;390665 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11974<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;500034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8219<sup>(9)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;343225 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82615<sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3449986  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;101883<sup>(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4254621  |
| **Melody Birmingham** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67560<sup>(10)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2821296  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7977<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;333120 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11170<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;466459 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7742<sup>(9)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;323306 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70447<sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2941865  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95039<sup>(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3968848  |
| **William Jefferson** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63645<sup>(10)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2657806  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8133<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;339634 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10723<sup>(7)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;447792 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7742<sup>(9)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;323306 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52938<sup>(12)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2210691 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71171<sup>(6)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2972113  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91238<sup>(8)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3810104  |
| **Michael Luhrs** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63645<sup>(10)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2657806 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Amounts shown represent the market value of the unvested RSUs calculated using the closing sale price of our common stock on December 31, 2025, the last trading day of fiscal 2025, which was $41.76 per share.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Amounts shown represent the market value of the unvested PSUs, calculated using the closing sale price of our common stock on December 31, 2025, the last trading day of fiscal 2025, which was $41.76 per share. The amounts presented are based on achieving the maximum performance level.

---

| | |
|:---|:---|
|  | **52** |
|  | **52** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 EXECUTIVE COMPENSATION     <br>

&nbsp;&nbsp;&nbsp;&nbsp;(3) The awards shown represent RSUs granted on January 25, 2023, except for Mr. Yates' award, which was granted on January 26, 2023. These shares will vest on February 27, 2026, provided the executive continues to be employed through such date.

&nbsp;&nbsp;&nbsp;&nbsp;(4) The awards shown represent PSUs granted on January 25, 2023, except for Mr. Yates' award, which was granted on January 26, 2023. The number of shares that will vest is dependent upon our performance relative to three-year performance goals over the 2023-2025 performance period and the executive's continued employment through February 27, 2026. The amounts presented are based on achieving the maximum performance level.

&nbsp;&nbsp;&nbsp;&nbsp;(5) The awards shown represent RSUs granted on March 27, 2023. These shares will vest on February 27, 2026, provided the executive continues to be employed through such date.

&nbsp;&nbsp;&nbsp;&nbsp;(6) The awards shown represent PSUs granted on March 27, 2023. The number of shares that will vest is dependent upon our performance relative to three-year performance goals over the 2023-2025 performance period and the executive's continued employment through February 27, 2026. The amounts presented are based on achieving the maximum performance level.

&nbsp;&nbsp;&nbsp;&nbsp;(7) The awards shown represent RSUs granted on January 24, 2024, except for Mr. Yates' award, which was granted on January 25, 2024. These shares will vest on February 26, 2027, except for Mr. Yates' award, which will vest on February 27, 2027, provided the executive continues to be employed through such date.

&nbsp;&nbsp;&nbsp;&nbsp;(8) The awards shown represent PSUs granted on January 24, 2024, except for Mr. Yates' award, which was granted on January 25, 2024. The number of shares that will vest is dependent upon our performance relative to three-year performance goals over the 2024-2026 performance period and the executive's continued employment through February 26, 2027, except for Mr. Yates' award, which will vest on February 27, 2027. The amounts presented are based on achieving the maximum performance level.

&nbsp;&nbsp;&nbsp;&nbsp;(9) The awards shown represent RSUs granted on January 22, 2025, except for Mr. Yates' award, which was granted on January 23, 2025. These shares will vest on February 29, 2028, provided the executive continues to be employed through such date.

&nbsp;&nbsp;&nbsp;&nbsp;(10) The awards shown represent PSUs granted on January 22, 2025, except for Mr. Yates' award, which was granted on January 23, 2025. The number of shares that will vest is dependent upon our performance relative to three-year performance goals over the 2025-2027 performance period and the executive's continued employment through February 29, 2028. The amounts presented are based on achieving the maximum performance level.

&nbsp;&nbsp;&nbsp;&nbsp;(11) The award shown represents a special retention award of service based RSUs granted on January 24, 2024. The award vests on January 24, 2025, January 24, 2026 and January 24, 2027, provided the executive continues to be employed through the applicable date.

&nbsp;&nbsp;&nbsp;&nbsp;(12) The award shown represents a special retention award of service based RSUs granted on January 22, 2025. The award vests on January 22, 2026, January 22, 2027 and January 22, 2028, provided the executive continues to be employed through the applicable date.

---

| | |
|:---|:---|
|  | **53** |
|  | **53** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 EXECUTIVE COMPENSATION     <br>

2025 Option Exercises and Stock Vested

The following table sets forth information regarding the vesting of stock awards during 2025. During 2025, none of our NEOs exercised or held option awards with respect to the Company.

---

| | |
|:---|:---|
| | **Stock Awards**  |
| <br>**Name** | **Value Realized** <br>**on Vesting** <br>**($)<sup>(4)</sup>**  |
| **Lloyd Yates**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;264436<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;10791633  |
| **Shawn Anderson**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71137<sup>(2)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;2748167  |
| **Melody Birmingham**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71547<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;2919833  |
| **William Jefferson**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40781<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;1664273  |
| **Michael Luhrs**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11091<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;440867 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) This amount represents 2022 PSUs and RSUs which vested on February 28, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;(2) This amount represents 2022 PSUs and RSUs which vested on February 28, 2025; 2022 special RSUs which vested on January 28, 2025; and 2024 special RSUs which vested on January 24, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;(3) This amount represents 2023 special RSUs which vested on March 27, 2025.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Amounts shown reflect the value realized upon the vesting of stock awards during 2025, computed by multiplying the number of shares that vested by the market value of our common stock on the applicable vesting date.

2025 Non-Qualified Deferred Compensation

The following table provides information regarding deferred compensation with respect to our NEOs under the Deferred Compensation Plan and the Savings Restoration Plan.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Plan Name<sup>(5)(6)</sup>** | **Executive** <br>**Contributions** <br>**in Last FY** <br>**($)<sup>(1)</sup>** | **Registrant** <br>**Contributions** <br>**in Last FY** <br>**($)<sup>(2)</sup>** | **Aggregate** <br>**Earnings** <br>**in Last FY** <br>**($)<sup>(3)</sup>** | **Aggregate** <br>**Withdrawals/** <br>**Distributions** <br>**($)** | **Aggregate** <br>**Balance** <br>**at Last FYE** <br>**($)<sup>(4)</sup>**  |
| **Lloyd Yates** | Deferred Compensation Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Lloyd Yates** | Savings Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63125 | &nbsp;&nbsp;&nbsp;&nbsp;11714 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;202566  |
| **Shawn Anderson** | Deferred Compensation Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Shawn Anderson** | Savings Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24063 | &nbsp;&nbsp;&nbsp;&nbsp;10456 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;68324  |
| **Melody Birmingham** | Deferred Compensation Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Melody Birmingham** | Savings Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25250 | &nbsp;&nbsp;&nbsp;&nbsp;3641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;65323  |
| **William Jefferson** | Deferred Compensation Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;—  |
| **William Jefferson** | Savings Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22188 | &nbsp;&nbsp;&nbsp;&nbsp;2512 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;48153  |
| **Michael Luhrs** | Deferred Compensation Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;—  |
| **Michael Luhrs** | Savings Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21875 | &nbsp;&nbsp;&nbsp;&nbsp;5825 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;38122 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Amounts shown, if any, were deferred under our Deferred Compensation Plan.

&nbsp;&nbsp;&nbsp;&nbsp;(2) The amount of Company contributions for each NEO in this column is included in each NEO's compensation reported in the 2025 Summary Compensation Table under the column "All Other Compensation".

&nbsp;&nbsp;&nbsp;&nbsp;(3) The aggregate earnings in this column are not reported in the 2025 Summary Compensation Table. For a discussion of investment options under these plans, see the narrative accompanying this table.

&nbsp;&nbsp;&nbsp;&nbsp;(4) The aggregate balance includes amounts for each NEO that would have been previously reported as compensation in the Summary Compensation Table for prior years had he or she been a NEO in those prior years with the exception of any amounts shown for the aggregate earnings on deferred compensation.

&nbsp;&nbsp;&nbsp;&nbsp;(5) For a description of the Deferred Compensation Plan, please see the "Other Compensation and Benefits – Deferred Compensation Plan" section in the CD&A under "Establishing Executive Compensation" and the narrative accompanying this table.

&nbsp;&nbsp;&nbsp;&nbsp;(6) For a description of the Savings Restoration Plan, please see the "Other Compensation and Benefits – Savings Programs" section in the CD&A under "Establishing Executive Compensation" and the narrative accompanying this table. These contributions are fully vested.

---

| | |
|:---|:---|
|  | **54** |
|  | **54** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 EXECUTIVE COMPENSATION     <br>

We sponsor the Savings Restoration Plan and the Deferred Compensation Plan, two non-qualified defined contribution plans, neither of which credits above-market or preferential earnings. Amounts due under the plans are unsecured contractual obligations that are paid from our general assets.

***Deferred Compensation Plan. The Deferred Compensation Plan provides employees at certain job levels, including the NEOs, the ability to defer compensation on a pre-tax basis, including compensation that would otherwise be limited by the Code. Participants may elect to defer and invest between 5% and 80% of their base compensation and/or between 5% and 80% of their annual bonus on a pre-tax basis. Participant deferrals are fully vested.***

***Savings Restoration Plan. The Savings Restoration Plan provides a supplemental benefit to eligible employees, including the NEOs, equal to the difference between: (i) the employer contributions (including matching, non-elective and profit sharing contributions) an employee would have received under our Retirement Savings Plan had such benefit not been limited by Sections 415 (a limitation on annual contributions under a defined contribution plan of $70,000 for 2025) and 401(a)(17) (a limitation on annual compensation of $350,000 for 2025) of the Code, and the Retirement Savings Plan's definition of compensation, which excludes deferrals into our Deferred Compensation Plan for purposes of calculating certain employer contributions, minus (ii) the actual employer contributions the employee received under the Retirement Savings Plan. Amounts credited under the Savings Restoration Plan are deferred on a pre-tax basis. Participants' accounts under the Savings Restoration Plan are 100% vested. Employees designate how these contributions will be invested, with the investment options generally the same as those available under our Retirement Savings Plan.***

Potential Payments upon Termination of Employment or a

Change-in-Control of the Company

Each NEO is eligible for certain benefits, upon certain types of terminations of employment, including a termination of employment involving a change-in-control of the Company ("CIC"). These benefits are in addition to the benefits to which all employees would be entitled upon a termination of employment generally (*i.e.,* (i) vested retirement benefits accrued as of the date of termination, (ii) stock-based awards that are vested as of the date of termination, and (iii) the right to continue medical coverage pursuant to COBRA (as defined in the Internal Revenue Code of 1986, as amended (the "Code") and the Employee Retirement Income Security Act of 1974). The additional benefits are described below.

***Executive Severance Policy. Our Executive Severance Policy provides severance pay and other benefits to terminated employees at a certain job level, including our NEOs, provided they satisfy the terms of the policy. No severance pay or other benefits are paid under this policy if the termination of employment occurs in connection with a CIC. Under the Executive Severance Policy, an employee becomes eligible to receive benefits only if he or she is terminated under any of the following scenarios: (a) a position elimination due to a reduction in force or other restructuring; (b) the position is moved to a principal employment location outside of a 50 mile radius from the Participant's principal employment location on the date of termination of employment and such move would result in the Participant having a commute more than 20 miles longer, and provided that the Participant chooses not to relocate to the new location for such position; or (c) employment is constructively terminated. Constructive termination means a material reduction with respect to: (1) the scope of the employee's position; (2) the employee's base pay; or (3) the employee's annual incentive opportunity; and as a result of any such event, the employee chooses to terminate employment. Under our Executive Severance Policy, an eligible employee receives severance pay in the amount of 52 weeks of base salary at the rate in effect on the date of termination. The employee also receives a lump sum amount equivalent to 130% of 52 weeks of COBRA continuation coverage premiums and outplacement services.***

***Change-in-Control and Termination Agreements. As of December 31, 2025, we had CIC and Termination Agreements with each of the NEOs. We entered into these agreements based upon our belief that they are in the best interests of the stockholders. They are designed to help ensure that in the event of extraordinary events, a thoroughly objective judgment is made on any potential corporate transaction, so that stockholder value is appropriately safeguarded and maximized. The CIC and Termination Agreements provide for cash severance benefits if the executive terminates employment for "Good Reason" (as defined below) or is terminated by the Company for any reason other than "Good Cause" (as defined below) within 24 months following certain CIC events (referred to as a "double trigger"). In addition, pursuant to the terms of the 2020 Omnibus Plan and 2010 Omnibus Plan, the executives' equity awards are subject to double trigger accelerated vesting in the event of a CIC unless an acquiring company does not assume or replace such awards upon the CIC. None of the agreements contain a "gross-up" provision to reimburse executives for excise taxes incurred with respect to benefits received under a CIC and Termination Agreement. The CIC and Termination Agreements can be terminated on twelve months' notice to the Participant. For purposes of the CIC and Termination Agreements:***

***"Good Cause" shall be deemed to exist if, and only if, we notify the executive, in writing, within 60 days of our knowledge that one of the following events occurred: (1) the executive has engaged in acts or omissions constituting dishonesty, intentional***

---

| | |
|:---|:---|
|  | **55** |
|  | **55** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 EXECUTIVE COMPENSATION     <br>

breach of fiduciary obligation or intentional wrongdoing or malfeasance, in each case that results in substantial harm to the Company; or (2) the executive has been convicted of a criminal violation involving fraud or dishonesty.

***"Good Reason" shall be deemed to exist if, and only if: (1) there is a significant diminution in the nature or the scope of the executive's authorities or duties; (2) there is a significant reduction in the executive's monthly rate of base salary and the executive's opportunity to earn a bonus under an incentive bonus compensation plan we maintain or the executive's benefits; (3) we change by 50 miles or more the principal location at which the executive is required to perform services as of the date of a CIC; or (4) there is a material breach of the CIC and Termination Agreement. The CIC and Termination Agreements provide for a lump sum payment of two (three in the case of Mr. Yates) times the executive's current annual base salary and target annual incentive bonus compensation. The executive will also receive a pro rata portion of the executive's targeted annual incentive bonus for the year of termination. The CIC and Termination Agreements also provide that in the event of a CIC, the executive's total CIC related payments will be equal to the best "net benefit" which is equal to the greater of: (i) the after-tax value of the executive's total CIC related payments reduced by the 20% excise tax and other federal, state, local and other taxes; and (ii) the after-tax value of the executive's CIC related payments that has been reduced to the extent necessary so that it would not trigger an excise tax, reduced for federal, state, local and other taxes (in each case, without a gross-up).***

In addition, the CIC and Termination Agreements provide for the executives to receive a lump sum amount equivalent to 130% of the COBRA continuation premiums due for the two-year period (three in the case of Mr. Yates) following termination. In the event of a CIC, all outstanding equity awards granted to each of the NEOs under the applicable Omnibus Plan as of December 31, 2025 will vest only upon a termination of employment in connection with a CIC.

---

| | |
|:---|:---|
|  | **56** |
|  | **56** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 EXECUTIVE COMPENSATION     <br>

For the NEOs, we have quantified the potential payments upon termination under various termination scenarios as of December 31, 2025.

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  | **Potential Payments upon Termination of Employment or a Change-in-Control of the Company at December 31, 2025<sup>(1)</sup>**  |
|  | **Severance** <br>**($)** | **Pro Rata** <br>**Bonus** <br>**Payment<sup>(5)</sup>** <br>**($)** | **Equity** <br>**Grants** <br>**($)** | **Cash** <br>**Awards** <br>**($)** | **Welfare** <br>**Benefits** <br>**($)** | **Outplacement** <br>**($)** | **Total** <br>**Payment** <br>**($)**  |
| **Lloyd Yates**<br>|  |  |  |  |  |  |  |
| Voluntary Termination |  | &nbsp;&nbsp;&nbsp;— | 20113327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 20113327  |
| Retirement<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Disability<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;2261784 | 20113327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 22375111  |
| Death<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;2261784 | 20113327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 22375111  |
| Involuntary Termination<sup>(3)</sup> | 1200000 | &nbsp;&nbsp;&nbsp;— | 20113327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;29523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 21367850  |
| Change-in-Control<sup>(4)</sup> | 10385351 | &nbsp;&nbsp;&nbsp;2261784 | 32163747 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;96994 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 44932875  |
| **Shawn Anderson**<br>|  |  |  |  |  |  |  |
| Voluntary Termination |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Retirement<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Disability<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;734563 | 5699097 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 6433659  |
| Death<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;734563 | 5699097 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 6433659  |
| Involuntary Termination<sup>(3)</sup> | 675000 | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;29295 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 729295  |
| Change-in-Control<sup>(4)</sup> | 2819125 | &nbsp;&nbsp;&nbsp;734563 | 8479444 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;63645 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 12121777  |
| **Melody Birmingham**<br>|  |  |  |  |  |  |  |
| Voluntary Termination |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Retirement<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Disability<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;751900 | 4217553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 4969454  |
| Death<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;751900 | 4217553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 4969454  |
| Involuntary Termination<sup>(3)</sup> | 690000 | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;26360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 741360  |
| Change-in-Control<sup>(4)</sup> | 2883800 | &nbsp;&nbsp;&nbsp;751900 | 6496876 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;57886 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 10215463  |
| **William Jefferson**<br>|  |  |  |  |  |  |  |
| Voluntary Termination |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Retirement<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Disability<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;707188 | 3778789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 4485977  |
| Death<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;707188 | 3778789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 4485977  |
| Involuntary Termination<sup>(3)</sup> | 650000 | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;29523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 704523  |
| Change-in-Control<sup>(4)</sup> | 2714375 | &nbsp;&nbsp;&nbsp;707188 | 5907144 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;63914 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 9417621  |
| **Michael Luhrs**<br>|  |  |  |  |  |  |  |
| Voluntary Termination |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Retirement<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | —  |
| Disability<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;702625 | 4999377 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 5702002  |
| Death<sup>(2)</sup> |  | &nbsp;&nbsp;&nbsp;702625 | 4999377 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | 5702002  |
| Involuntary Termination<sup>(3)</sup> | 650000 | &nbsp;&nbsp;&nbsp;— |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;14227 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 689227  |
| Change-in-Control<sup>(4)</sup> | 2705250 | &nbsp;&nbsp;&nbsp;702625 | 8041435 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;33321 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | 11507632 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Amounts payable to each of the NEOs as shown in the Pension Benefits Table, the Non-Qualified Deferred Compensation Table, and under the tax-qualified, non-discriminatory 401(k) Plan are not included in this table.

&nbsp;&nbsp;&nbsp;&nbsp;(2) For all NEOs, special vesting rules apply in the event the applicable NEO's employment terminates following the NEO becoming retirement eligible or as a result of the NEO's death or disability. None of the NEOs were retirement eligible as of December 31, 2025.

For NEOs other than Mr. Yates, if the NEO's employment had terminated as a result of the NEO's death or disability as of December 31, 2025, the NEO would have been entitled to pro-rata vesting as of the termination date, with the PSUs vesting based on actual performance; provided that, for the 2024 and 2025 PSUs, the PSU vesting would have been based on target performance if termination resulted from the NEO's death.

---

| | |
|:---|:---|
|  | **57** |
|  | **57** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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    2025 EXECUTIVE COMPENSATION     <br>

For Mr. Yates, if his employment had terminated as a result of his death or disability as of December 31, 2025, he would have been entitled to pro-rata vesting as of the termination date, with the PSUs vesting based on actual performance; provided that, for the 2025 PSUs, the PSU vesting would have been based on target performance if termination resulted from the NEO's death. If his employment had terminated as a result of voluntary termination or involuntary termination as of December 31, 2025, he would have been entitled to pro-rata vesting as of the termination date, with the PSUs vesting based on actual performance.

The figures above represent target performance because as of December 31, 2025 actual performance was not yet known. The value of the equity grants was determined by multiplying the closing price of our common stock on December 31, 2025, which was $41.76 per share, by the number of shares that would have vested upon termination of employment as a result of the NEO's retirement, disability or death, as applicable.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Amounts shown reflect payments that would be made upon the involuntary termination of each NEO eligible under our Executive Severance Policy as described above.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Amounts shown reflect payments to be made upon termination of employment in the event of a Change-in-Control of the Company under the CIC and Termination Agreements as described above in the "Change-in-Control and Termination Agreements" section.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Bonus Payments were calculated using the NEO's eligible earnings for 2025 and known company STI scorecard results for 2025.

Pay Ratio

As required by Section 953(b) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, we are providing the following disclosure about the relationship of the annual total compensation of our employees to the annual total compensation of our CEO.

For 2025, the ratio of the compensation of Mr. Yates, our CEO during 2025, to the compensation of the median employee is 106 to 1.

To identify the median of the annual total compensation of all our employees (other than our CEO), as well as to determine the annual total compensation of our median employee and our CEO, we took the following steps consistent with Item 402(u) of Regulation S-K:

&nbsp;&nbsp;&nbsp;&nbsp;1. To identify the "median employee" from our employee population, we prepared a full census of all our employees (except our CEO) using our existing centralized payroll database of base cash compensation (base salary plus overtime and shift premiums, calculated based on the hours worked during the relevant period) that is used internally to calculate annual cash (STI) incentive compensation and profit-sharing eligibility. We used base cash compensation as our compensation measure as it is the principal form of compensation delivered to all of our employees. We used the same median employee for 2024 and 2025. In 2024, we used the following methodology to identify the median employee:

&nbsp;&nbsp;&nbsp;&nbsp;• We determined that, as of December 31, 2024, our employee population consisted of approximately 7,743 employees, with all of our employees located in the United States. This population consisted of our full-time, part-time and temporary employees, as determined for employment law purposes.

&nbsp;&nbsp;&nbsp;&nbsp;• We adjusted as of December 31, 2024, the compensation of 619 full-time employees and 57 part-time employees hired during 2024 to annualize compensation for any portion of the measurement period that they were not with the Company.

&nbsp;&nbsp;&nbsp;&nbsp;• Although all of our employees are eligible for an annual cash (STI) incentive (paid in 2025 for 2024 individual and Company performance), we excluded this for all employees because we determined its inclusion would not have a meaningful effect on the determination of the median employee.

&nbsp;&nbsp;&nbsp;&nbsp;• Since we do not widely distribute annual equity awards to our employees, such awards were excluded from our compensation measure.

&nbsp;&nbsp;&nbsp;&nbsp;2. We identified our median employee from a full census report compiled using base cash compensation as our consistently applied compensation measure. Since all our employees are located in the United States, as is our CEO, we did not make any cost-of-living adjustments identifying the "median employee."

&nbsp;&nbsp;&nbsp;&nbsp;3. Once we identified our median employee, we combined all of the elements of such employee's compensation for 2025 in accordance with the requirements of Item 402(c)(2)(x) of Regulation S-K, resulting in annual total compensation of $125,021.

&nbsp;&nbsp;&nbsp;&nbsp;4. For the year ended December 31, 2025, the total compensation for our CEO, Mr. Yates, was $13,197,800 as reported in the "Total" column of the Summary Compensation Table of this Proxy Statement.

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| | |
|:---|:---|
|  | **58** |
|  | **58** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## 2025 Pay Versus Performance
As required by Section 953(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act, and Item 402(v) of Regulation S-K, we are providing the following information about the relationship between executive Compensation Actually Paid ("CAP") to our CEOs and to our non-CEO NEOs and certain financial performance of the Company. CAP, as determined under SEC requirements, does not reflect the actual amount of compensation earned by or paid to our executive officers during a covered year. For further information concerning the Company's variable pay-for-performance philosophy and how the Company aligns executive compensation with the Company's performance, refer to the "Compensation Discussion and Analysis (CD&A)" section above.

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Year** | **CEO** | **CEO** | **Former CEO** | **Former CEO** | **Other NEO Pay** | **Other NEO Pay** | **Value of** <br>**Initial Fixed $100 Invested** <br>**Based on:** | **Value of** <br>**Initial Fixed $100 Invested** <br>**Based on:** | **Net Income** <br>**(in millions)** | **Adjusted** <br>**EPS<sup>(8)</sup>**  |
| **Year** | **Summary** <br>**Compen-**<br>**sation** <br>**Table Total**<br>**for CEO** | **Compen-**<br>**sation** <br>**Actually Paid** <br>**to CEO<sup>(6)</sup>** | **Summary** <br>**Compen-**<br>**sation** <br>**Table Total for** <br>**Former CEO** | **Compensation** <br>**Actually Paid to** <br>**Former CEO<sup>(7)</sup>** | **Average** <br>**Summary** <br>**Compen-**<br>**sation** <br>**Table** <br>**Total for** <br>**Other** <br>**NEO's** | **Average** <br>**Compen-**<br>**sation** <br>**Actually** <br>**Paid** <br>**to Other** <br>**NEO's** | **Total** <br>**Share-**<br>**holder** <br>**Return** <br>(TSR) | **Dow** <br>**Jones** <br>**Utilities** <br>**Index** <br>**Peer** <br>**Group** <br>**TSR**  | **Net Income** <br>**(in millions)** | **Adjusted** <br>**EPS<sup>(8)</sup>**  |
| 2025<sup>(1)</sup> | $13197800 | &nbsp;&nbsp;$26178851 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | $3689768 | $6200227 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$216 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$159 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1013 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.90  |
| 2024<sup>(2)</sup> | $12784970 | &nbsp;&nbsp;$34023789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | $3656310 | $7905729 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$137 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$845 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.75  |
| 2023<sup>(3)</sup> | $9216680 | &nbsp;&nbsp;$9913336 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | $2869181 | $3127806 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$129 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$111 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$674 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.60  |
| 2022<sup>(4)</sup> | $7113506 | &nbsp;&nbsp;$6720202 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1352993 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;($3953194) <sup>(6)</sup> | $2221932 | $1305705 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$128 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$119 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$792 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.47  |
| 2021<sup>(5)</sup> | $0 | &nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9535782 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13795347 | $2491010 | $3453360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$125 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$117 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$589 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.37 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) For 2025, the table includes Lloyd Yates as CEO. The other NEOs were Shawn Anderson, Melody Birmingham, William Jefferson and Michael Luhrs.

&nbsp;&nbsp;&nbsp;&nbsp;(2) For 2024, the table includes Lloyd Yates as CEO. The other NEOs were Shawn Anderson, Melody Birmingham, William Jefferson and Michael Luhrs.

&nbsp;&nbsp;&nbsp;&nbsp;(3) For 2023, the table includes Lloyd Yates as CEO. The other NEOs were Donald E. Brown, Shawn Anderson, Melody Birmingham, William Jefferson and Michael Luhrs.

&nbsp;&nbsp;&nbsp;&nbsp;(4) For 2022, the table includes Lloyd Yates as CEO and Joseph Hamrock as Former CEO. The other NEOs were Donald E. Brown, Shawn Anderson, Melody Birmingham, William Jefferson and Pablo A. Vegas.

&nbsp;&nbsp;&nbsp;&nbsp;(5) For 2021, the table includes Joseph Hamrock as CEO. The other NEOs were Donald E. Brown, Pablo A. Vegas, Violet G. Sistovaris and Charles E. Shafer.

&nbsp;&nbsp;&nbsp;&nbsp;(6) In accordance with the SEC rules, the amounts reported in these columns for each year were calculated by making the adjustments shown in the following tables to amounts reported for the CEOs in the Summary Compensation Table in the total column. Amounts for each year do not reflect the actual amount of compensation earned by or paid to the CEO during the applicable year.

&nbsp;&nbsp;&nbsp;&nbsp;(7) A pro rata portion of all outstanding, unvested equity award vesting in connection with Mr. Hamrock's retirement in 2022.

&nbsp;&nbsp;&nbsp;&nbsp;(8) Adjusted EPS is a non-GAAP financial measure. Appendix A to this Proxy Statement contains a full reconciliation of GAAP EPS to Adjusted EPS.

---

| | |
|:---|:---|
|  | **59** |
|  | **59** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

#### **TABLE OF CONTENTS**
    2025 PAY VERSUS PERFORMANCE     <br>

To calculate CAP, the following amounts were deducted from and added to Summary Compensation Table ("SCT") total compensation:

#### CEO SCT to CAP Reconciliation:

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Year** | **Reported** <br>**SCT Total for** <br>**Covered Year** | **Reported** <br>**Value of Equity** <br>**Awards in SCT** <br>**for Covered** <br>**Year<sup>(a)</sup>** |  | **Equity Award** <br>**Adjustments** <br>**for Covered** <br>**Year<sup>(b)</sup>** |  | **Reported** <br>**Change in the** <br>**Actuarial** <br>**Present Value** <br>**of Pension** <br>**Benefits for** <br>**Covered Year** |  | **Pension** <br>**Benefits** <br>**Adjustments** <br>**for Covered** <br>**Year** |  | **Compensation** <br>**Actually Paid** <br>**for Covered** <br>**Year**  |
| 2025 | &nbsp;&nbsp;$13197800 | &nbsp;&nbsp;&nbsp;&nbsp;$9619864 | &nbsp;&nbsp;+ | &nbsp;&nbsp;$22600915 | &nbsp;&nbsp;&nbsp;– | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;+ | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;= | &nbsp;&nbsp;$26178851 |

---

#### Other NEOs SCT to CAP Reconciliation:

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Year** | **Average** <br>**Reported** <br>**SCT Total for** <br>**Covered Year** | **Average** <br>**Reported** <br>**Value of Equity** <br>**Awards in SCT** <br>**for Covered** <br>**Year<sup>(a)</sup>** |  | **Average** <br>**Equity Award** <br>**Adjustments** <br>**for Covered** <br>**Year<sup>(b)</sup>** |  | **Average** <br>**Reported** <br>**Change in the** <br>**Actuarial** <br>**Present Value** <br>**of Pension** <br>**Benefits for** <br>**Covered Year** |  | **Average** <br>**Pension** <br>**Benefits** <br>**Adjustments** <br>**for Covered** <br>**Year<sup>(c)</sup>** |  | **Average of** <br>**Compensation** <br>**Actually Paid** <br>**for Covered** <br>**Year**  |
| 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$3689768 | &nbsp;&nbsp;&nbsp;&nbsp;$2165412 | + | &nbsp;&nbsp;&nbsp;&nbsp;$4675871 | &nbsp;&nbsp;&nbsp;– | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;+ | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;= | &nbsp;&nbsp;&nbsp;&nbsp;$6200227 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) Represents the amounts reported in the Summary Compensation Table in the Stock Awards Column.

&nbsp;&nbsp;&nbsp;&nbsp;(b) See reconciliation of the Equity Award Adjustments below.

&nbsp;&nbsp;&nbsp;&nbsp;(c) See reconciliation of the Average Pension Benefits Adjustments below.

#### CEO Equity Adjustment to CAP Reconciliation

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Year** | **Covered Year-**<br>**End Fair Value** <br>**of Equity Awards** <br>**Granted During** <br>**Covered Year** <br>**That Remained** <br>**Outstanding** <br>**and Unvested** <br>**as of Last Day** <br>**of Covered Year** <br>**($)** | **Change in Fair** <br>**Value as of** <br>**Last Day of** <br>**Covered Year** <br>**(as compared** <br>**to Last Day of** <br>**Prior Year) of** <br>**Equity Awards** <br>**Granted Prior** <br>**to Covered** <br>**Year and** <br>**Outstanding** <br>**and Unvested** <br>**as of Last Day** <br>**of Covered Year** <br>**($)** | **Vesting Date** <br>**Fair Value of** <br>**Equity Awards** <br>**Granted During** <br>**Covered Year** <br>**that Vested During** <br>**Covered Year** <br>**($)** | **Change in Fair** <br>**Value from** <br>**Last Day of** <br>**Prior Year to** <br>**Vesting Date** <br>**of Equity Awards** <br>**Granted Prior** <br>**to Covered** <br>**Year that** <br>**Vested During** <br>**Covered Year** <br>**($)** | **Fair Value as** <br>**of Last Day of** <br>**Prior Year of** <br>**Equity Awards** <br>**that Failed to** <br>**Meet Vesting** <br>**Conditions** <br>**During the** <br>**Covered Year** <br>**($)** | **Value of** <br>**Dividends or** <br>**Other Earnings** <br>**Paid on Equity** <br>**Awards Not** <br>**Otherwise** <br>**Included as of** <br>**Last Day of** <br>**Covered Year**<br>**($)** | **Total - Inclusion** <br>**of Equity Values** <br>**($)**  |
| 2025 | &nbsp;&nbsp;$14535760 | &nbsp;&nbsp;&nbsp;$7020374 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;$1044781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | $22600915 |

---

---

| | |
|:---|:---|
|  | **60** |
|  | **60** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

#### **TABLE OF CONTENTS**
    2025 PAY VERSUS PERFORMANCE     <br>

#### Other NEOs Equity Adjustment to CAP Reconciliation

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Year** | **Average** <br>**Covered Year-**<br>**End Fair Value** <br>**of Equity Awards** <br>**Granted During** <br>**Covered Year** <br>**That Remained** <br>**Outstanding** <br>**and Unvested** <br>**as of Last Day** <br>**of Covered Year** <br>**($)** | **Average** <br>**Change in Fair** <br>**Value as of** <br>**Last Day of** <br>**Covered Year** <br>**(as compared** <br>**to Last Day of** <br>**Prior Year) of** <br>**Equity Awards** <br>**Granted Prior** <br>**to Covered** <br>**Year and** <br>**Outstanding** <br>**and Unvested** <br>**as of Last Day** <br>**of Covered Year** <br>**($)** | **Average** <br>**Vesting Date** <br>**Fair Value of** <br>**Equity Awards** <br>**Granted During** <br>**Covered Year** <br>**that Vested During** <br>**Covered Year** <br>**($)** | **Average** <br>**Change in Fair** <br>**Value from** <br>**Last Day of** <br>**Prior Year to** <br>**Vesting Date** <br>**of Equity Awards** <br>**Granted Prior** <br>**to Covered** <br>**Year that** <br>**Vested During** <br>**Covered Year**<br>**($)** | **Average** <br>**Fair Value as** <br>**of Last Day of** <br>**Prior Year of** <br>**Equity Awards** <br>**that Failed to** <br>**Meet Vesting** <br>**Conditions** <br>**During the** <br>**Covered Year** <br>**($)** | **Average Value** <br>**of Dividends** <br>**or Other** <br>**Earnings Paid** <br>**on Equity** <br>**Awards Not** <br>**Otherwise** <br>**Included as of** <br>**Last Day of** <br>**Covered Year**<br>**($)** | **Total - Average** <br>**Inclusion of**<br>**Equity Values** <br>**($)**  |
| 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$3046028 | &nbsp;&nbsp;&nbsp;$1477419 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$152424 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;$4675871 |

---

Fair values reported in this table are computed in accordance with FASB ASC Topic 718.

#### CEO and Other NEOs Pension Adjustment to CAP Reconciliation

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Year** | **Plan** | **Service Cost** | **Prior Service Cost** | **Total Average Pension** <br>**Benefit Adjustment (Service** <br>**Cost ÷ by number of Other** <br>**NEOs in applicable year)**  |
| 2025 | Pension Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0  |
|  | Pension Restoration Plan | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 |
|  | Total | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0 |

---

---

| | |
|:---|:---|
|  | **61** |
|  | **61** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

#### **TABLE OF CONTENTS**
    2025 PAY VERSUS PERFORMANCE     <br>

CAP\* versus Total Shareholder Return

The graph below represents the relationship between CAP to our CEO, the average CAP to our Non-CEO NEOs and Total Shareholder Return ("TSR") for NiSource and the Dow Jones U.S. Utilities Index.

![](ny20055306x771_pvp1.jpg)

\*CAP, as determined under SEC requirements, does not reflect the actual amount of compensation earned by or paid to our executive officers during a covered year.

CAP versus Net Income

The graph below shows the relationship between the Company's net income and the CEO and Non-CEO NEOs' CAP. The Company does not use Net Income to determine compensation and is not included in incentive plans.

![](ny20055306x771_pvp2.jpg)

---

| | |
|:---|:---|
|  | **62** |
|  | **62** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

    2025 PAY VERSUS PERFORMANCE     <br>

CAP versus Company Selected Measures: Adjusted EPS

The graph below shows the relationship between the Company's adjusted EPS and the CEO and Non-CEO NEOs' CAP. Adjusted EPS is a non-GAAP financial measure. Appendix A to this Proxy Statement contains a full reconciliation of GAAP EPS to Adjusted EPS.

![](ny20055306x771_pvp3.jpg)

COMPANY SELECTED PERFORMANCE MEASURES

The following were the three most important performance measures as determined by the Company that link compensation actually paid to our NEOs to the Company's performance for the most recently completed fiscal year. Adjusted EPS and RTSR are the only two financial measures used as part of the Company's compensation programs and to link compensation actually paid and Company performance. Safety is the most important non-financial measure used to link compensation actually paid to Company performance.

---

| |
|:---|
| **Company Selected Performance Measures**  |
| Adjusted EPS  |
| RTSR  |
| Safety |

---

---

| | |
|:---|:---|
|  | **63** |
|  | **63** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

---

------

## Equity Compensation Plan Information
The following table provides information as of December 31, 2025 regarding the number of shares of our common stock that may be issued under our equity compensation plans.

---

| | | | |
|:---|:---|:---|:---|
| **Plan Category** | **Number of Securities** <br>**to be Issued** <br>**Upon Exercise of** <br>**Outstanding Options,** <br>**Warrants and Rights** <br>**(#)(a)<sup>(1)</sup>** | **Weighted-Average** <br>**Exercise Price of** <br>**Outstanding Options,** <br>**Warrants and Rights** <br>**($)(b)<sup>(2)</sup>** | **Number of Securities** <br>**Remaining Available for** <br>**Future Issuance Under** <br>**Equity Compensation** <br>**Plans (Excluding** <br>**Securities Reflected** <br>**in Column (a))** <br>**(#)(c)<sup>(3)</sup>**  |
| Equity compensation plans approved by security holders<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3654769 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6537216  |
| Equity compensation plans not approved by security holders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| Total | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3654769 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6537216 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Plans approved by security holders consist of the following: the 2010 Omnibus Plan, approved by stockholders on May 11, 2010 (no shares remain available for future grants under the plan); the 2020 Omnibus Plan approved by the stockholders on May 19, 2020; and the Company's Employee Stock Purchase Plan, approved by the stockholders on May 7, 2019 and May 13, 2024.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Restricted stock units and performance share awards are payable at no cost to the grantee on a one-for-one basis. As of December 31, 2025, there were no outstanding stock options under the 2010 Omnibus Plan or the 2020 Omnibus Plan.

&nbsp;&nbsp;&nbsp;&nbsp;(3) As of December 31, 2025, 6,537,216 shares remained available for issuance under the 2020 Omnibus Plan and 1,140,407 shares remained available for purchase under the Employee Stock Purchase Plan. The Employee Stock Purchase Plan provides the opportunity for eligible employees to acquire shares of our common stock at a 10% discount. For purposes of this table, we have included the number of shares issuable under outstanding performance share awards assuming performance targets are achieved at the maximum achievement level.

---

| | |
|:---|:---|
|  | **64** |
|  | **64** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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------

#### **TABLE OF CONTENTS**

## Proposal 2 – Advisory Approval of NEO Compensation
Pursuant to Section 14A of the Exchange Act, we are asking stockholders to approve, in a non-binding advisory vote, the compensation paid to our NEOs, as disclosed under the headings "2025 Executive Compensation" and "Compensation Discussion and Analysis (CD&A)" above, commonly known as a "Say-on-Pay" proposal.

At the 2023 annual meeting of stockholders, we provided our stockholders with an advisory vote regarding how frequently the Company will conduct future stockholder advisory votes to approve the compensation paid to our NEOs. A majority of the shares present or represented at the meeting were voted in favor of an annual vote, consistent with the Board's recommendation. Based on these results, the Board has determined to hold an annual advisory vote on the compensation paid to our NEOs.

The Board encourages stockholders to carefully review the 2025 Executive Compensation and CD&A sections of this Proxy Statement, for a thorough discussion of our executive compensation program and philosophy. Our compensation program is designed to be significantly performance-based and to attract and retain highly qualified individuals who enhance long-term stockholder value by contributing to our ongoing success. All facets of our compensation program are regularly monitored by the C&HC Committee to ensure that the program is well-tailored to fulfill our compensation philosophy and objectives.

In considering this proposal, stockholders may wish to consider the following factors that we believe demonstrate our commitment to maintaining a robust compensation program:

&nbsp;&nbsp;&nbsp;&nbsp;• Compensation is closely tied to both corporate and individual performance;

&nbsp;&nbsp;&nbsp;&nbsp;• Annual and long-term incentive compensation opportunities are contingent on the Company achieving pre-established goals;

&nbsp;&nbsp;&nbsp;&nbsp;• Total compensation packages are competitive to our Compensation Comparator Group;

&nbsp;&nbsp;&nbsp;&nbsp;• Perquisites are appropriately limited in number and modest in dollar value; and

&nbsp;&nbsp;&nbsp;&nbsp;• We believe our compensation program does not create incentives for behaviors that create material risk to the Company.

As discussed in the CD&A and 2025 Executive Compensation sections of this Proxy Statement, the C&HC Committee and the Board believe that our executive compensation program fulfills the objectives of our compensation philosophy in a prudent and effective manner.

Accordingly, the following resolution is submitted for an advisory stockholder vote at the Annual Meeting:

**RESOLVED, that the compensation paid to our NEOs, as disclosed pursuant to Item 402 of Regulation S-K, including the Compensation Discussion and Analysis, compensation tables and narrative discussion, is hereby approved on an advisory basis.** 

As this is an advisory vote, the result will not be binding on the Company, the Board or the C&HC Committee, although the C&HC Committee and the Board will carefully consider the outcome of the vote when evaluating our compensation program and philosophy.

VOTE REQUIRED

The affirmative vote of a majority of the shares present at the virtual Annual Meeting or represented by proxy at the meeting and entitled to vote is needed to approve the advisory vote on the compensation of the NEOs. Proxies submitted without direction pursuant to this solicitation will be voted "FOR" the advisory approval of executive compensation of our NEOs. Abstentions by those present or represented by proxy will have the same effect as a vote against the proposal. Brokers will not have discretionary authority to vote on the proposal. Accordingly, there could be broker non-votes, which will have no effect on the vote.

&nbsp;&nbsp;THE BOARD UNANIMOUSLY RECOMMENDS A VOTE "**FOR**" THE APPROVAL OF NEO COMPENSATION ON AN ADVISORY BASIS.<br>

---

| | |
|:---|:---|
|  | **65** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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------

#### **TABLE OF CONTENTS**

## Proposal 3 – Ratification of Independent Registered Public Accounting Firm
The Audit Committee of the Board is directly responsible for the appointment, compensation, retention and oversight of the independent registered public accounting firm retained to audit our financial statements. The Audit Committee appointed Deloitte as our independent registered public accounting firm for 2026. As part of its oversight of our relationship with our independent registered public accounting firm and to assure continuing independence of such firm, the Audit Committee considers whether it is appropriate to adopt a policy of rotating its independent registered public accounting firm on a regular basis. Further, in conjunction with ensuring the rotation of such firm's lead engagement partner, the Audit Committee and its Chair are directly involved with the selection of Deloitte's lead engagement partner. The Audit Committee also reviews proposals for all auditing services (including fees and terms thereof) of our independent registered public accounting firm and approves all such proposals prior to the commencement or performance of such services, subject to the pre-approval policies and procedures described under "Independent Registered Public Accounting Firm Fees".

Deloitte has served as our independent registered public accounting firm since 2002 and has the requisite understanding of our business, accounting policies and practices, and internal control over financial reporting to drive audit quality and efficient fee structures. As a result of this expertise, and, as noted above, the Audit Committee's oversight designed to assure continuing independence, the Board and its Audit Committee consider Deloitte well qualified to serve as our independent registered public accounting firm. Further, the Board believes that the continued retention of Deloitte is in our best interest and the best interest of our stockholders. Although action by stockholders for this matter is not required, the Board and the Audit Committee believe that it is appropriate to seek stockholder ratification of this appointment to provide stockholders a means of communicating the stockholders' level of satisfaction with the performance of the independent registered public accounting firm and their level of independence from management. If the proposal is not approved and the appointment of Deloitte is not ratified by the stockholders, the Audit Committee will take this into consideration and will reconsider the appointment. A representative of Deloitte will be present at the virtual Annual Meeting and will be given an opportunity to make a statement if he or she so desires and will be available to respond to appropriate questions.

VOTE REQUIRED

The affirmative vote of a majority of the shares present during the virtual Annual Meeting or represented by proxy and entitled to vote is needed to ratify the appointment of Deloitte as our independent registered public accounting firm for 2026. Proxies submitted without direction pursuant to this solicitation will be voted "FOR" the ratification of the appointment of Deloitte. Abstentions by those present or represented by proxy will have the same effect as a vote against the proposal. Brokers will have discretionary authority to vote on this proposal, and, accordingly, there will not be any broker non-votes.

&nbsp;&nbsp;THE BOARD AND ITS AUDIT COMMITTEE UNANIMOUSLY RECOMMEND A VOTE "**FOR**" THE RATIFICATION OF THE APPOINTMENT OF DELOITTE AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR 2026.<br>

---

| | |
|:---|:---|
|  | **66** |
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#### **TABLE OF CONTENTS**

## Audit Committee Report
Our Audit Committee consists of Messrs. Bunting and Jesanis and Mses. Barbour and Lee. Each member of the Audit Committee is independent as defined by the applicable NYSE and SEC rules and meets the additional independence standard set forth by the Board in the Corporate Governance Guidelines. Each member of the Audit Committee also is "financially literate" for purposes of applicable NYSE rules. The Board has determined that Messrs. Bunting and Jesanis and Mses. Barbour, the Chair of the Audit Committee, and Lee are each an "audit committee financial expert" as defined by SEC rules.

The Audit Committee is responsible for, among other things, assisting the Board in monitoring the integrity of our financial statements; reviewing the qualifications and independence of our independent registered public accounting firm; overseeing the performance of our internal audit function and independent registered public accounting firm; monitoring compliance with legal and regulatory requirements; and reviewing our risk assessment process. The Audit Committee's charter describes in greater detail the full responsibilities of the committee and is available on our website. The Audit Committee has the sole authority to appoint, retain or replace the independent registered public accounting firm and is directly responsible for the compensation and oversight of the work of the independent registered public accounting firm for the purpose of preparing or issuing an audit report or performing other audit, review or attest services for us. The independent registered public accounting firm reports directly to the Audit Committee. Further information about the Audit Committee is detailed in the "Corporate Governance" section, see pages 22-31 of this Proxy Statement.

In 2025, the Committee met ten times. Meetings are designed to facilitate and encourage open communication among the members of the Audit Committee, management, the internal auditors, and the Company's independent auditors, Deloitte & Touche LLP ("Deloitte"). In the performance of its responsibilities, the Audit Committee met regularly with the members of our internal audit function and Deloitte, with and without management present, to discuss, among other items, the results of its examinations, evaluations of our internal controls, the overall quality, not just the acceptability, of our financial reporting. The Audit Committee also met regularly with management, our internal audit function and Deloitte on a recurring basis to review and discuss the audit process, accounting, auditing, internal controls over financial reporting, annual and quarterly financial statements and related disclosures in reports filed with the SEC, earnings and risk assessment and risk management matters. In addition, during these meetings, the Audit Committee reviewed and discussed, among other items, the audited consolidated financial statements, the unaudited interim financial statements, significant accounting policies applied by us in our financial statements and non-GAAP financial measures, preapproval of audit services and permissible non-audit services performed by Deloitte, and policies and procedures related to compliance, ethics and legal and regulatory matters. The Audit Committee also discussed with, and received regular status reports from, our internal audit function and Deloitte on the overall scope and plans for their audits, including the scope and plans for evaluating the effectiveness of internal controls over financial reporting.

The Audit Committee has discussed with Deloitte the matters required to be discussed by the applicable requirements of the PCAOB and the SEC. The Audit Committee also has received the written disclosures and the letter from Deloitte required by the applicable requirements of the PCAOB regarding the independent registered public accounting firm's communications with audit committees concerning independence and has discussed with Deloitte its independence. The Audit Committee has considered whether Deloitte's provision of non-audit services to us is compatible with maintaining Deloitte's independence. In reliance on the review and discussions referred to above, the Audit Committee recommended to the Board that the audited consolidated financial statements be included in our 2025 Annual Report on Form 10-K.

The Audit Committee evaluates the performance of its independent auditor annually, including the senior audit engagement team, and considers whether to retain the current independent auditor or consider rotating the engagement to a different audit firm. The annual review is a rigorous evaluation and takes into account various factors, including the historical and recent performance of Deloitte on the audit; the professional qualifications of the firm and the lead audit partner; the quality of ongoing discussions with Deloitte; the results of an internal survey of Deloitte's service and quality; the appropriateness of fees; and evidence supporting the firm's independence, objectivity and professional skepticism.

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#### **TABLE OF CONTENTS**
    AUDIT COMMITTEE REPORT     <br>

Based on its evaluation, the Audit Committee has appointed Deloitte to serve as our independent registered public accounting firm for the year ending December 31, 2026. Deloitte has served as the company's independent auditor since 2002. Although the Audit Committee has sole authority to appoint the independent registered public accounting firm, the Audit Committee has recommended that the Board seek stockholder ratification of the appointment at the Annual Meeting as a matter of good corporate governance.

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| |
|:---|
| Audit Committee  |
| Sondra L. Barbour, Chair <br>Theodore H. Bunting, Jr., CPA<br>Michael E. Jesanis<br>Cassandra S. Lee, CPA |

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## Independent Registered Public Accounting Firm Fees
The following table represents the aggregate fees for professional services billed by Deloitte for the fiscal years ended December 31, 2025 and 2024.

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| | | |
|:---|:---|:---|
|  | **2025** | **2024**  |
| Audit Fees<sup>(1)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7214600 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6126550  |
| Audit-Related Fees<sup>(2)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$45000 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| Tax Fees |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Tax Compliance<sup>(3)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$410375 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| &nbsp;&nbsp;&nbsp;&nbsp;Tax Advice and Tax Planning<sup>(4)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;—  |
| All Other Fees<sup>(5)</sup> | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6140 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6111 |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Audit Fees — Fees for professional services performed by Deloitte for the audit of our annual financial statements in our 2025 Annual Report on Form 10-K and review of financial statements included in our Quarterly Report on Form 10-Q filings and services that are normally provided in connection with statutory and regulatory filings or engagements.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Audit-Related Fees — Fees for the assurance and related services performed by Deloitte that are reasonably related to the performance of the audit or review of our financial statements.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Tax Compliance — Fees for professional services performed by Deloitte with respect to tax compliance.

&nbsp;&nbsp;&nbsp;&nbsp;(4) Tax Advice and Tax Planning — Fees for professional services performed by Deloitte with respect to tax advice and tax planning.

&nbsp;&nbsp;&nbsp;&nbsp;(5) All Other Fees — Fees for permissible work performed by Deloitte that does not fit within the above categories.

***Pre-Approval Policies and Procedures. During 2025, the Audit Committee approved all audit, audit-related and non-audit services provided to us by Deloitte prior to management engaging the independent registered public accounting firm for those purposes. The Audit Committee's current practice is to consider for pre-approval annually all audit, audit-related and non-audit services proposed to be provided by our independent registered public accounting firm for the year. Additional fees for other proposed audit-related or non-audit services (not within the scope of the approved audit engagement) which have been properly presented to the Pre-Approval Subcommittee of the Audit Committee (consisting of the then-acting Audit Committee chair) by our chief accounting officer may be considered and, if appropriate, approved by the Pre-Approval Subcommittee of the Audit Committee, subject to later ratification by the full Audit Committee. In no event, however, will any non-audit service be approved by the Pre-Approval Subcommittee that would result in the independent registered public accounting firm no longer being considered independent under the applicable SEC rules. In appointing Deloitte as our independent registered public accounting firm, the Audit Committee has considered whether the provision of the non-audit services rendered by Deloitte is compatible with maintaining the firm's independence.***

## Delinquent Section 16(a) Reports
Based on a review of reports filed with the SEC and written representations that no other reports were required under Section 16(a) of the Exchange Act, we believe that all of our directors, officers and beneficial owners of more than 10% of our common stock who are required to file such reports did file all such reports on a timely basis during 2025.

## Stockholder Proposals and Nominations for 2027 Annual Meeting
Stockholders may submit proposals appropriate for stockholder action at the 2027 Annual Meeting consistent with the requirements of Rule 14a-8 under the Exchange Act, all other rules of the SEC relating to stockholder proposals and our Bylaws. Written notice containing the required information should be addressed to the attention of our Corporate Secretary at NiSource Inc., 801 E. 86<sup>th</sup> Avenue, Merrillville, Indiana 46410. For your proposal to be considered for inclusion in our Proxy Statement in connection with the 2027 Annual Meeting, we must receive your written proposal no later than November 30, 2026.

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#### **TABLE OF CONTENTS**
    STOCKHOLDER PROPOSALS AND NOMINATIONS FOR 2027 ANNUAL MEETING     <br>

Stockholder proposals not intended to be included in our Proxy Statement (including director nominations) may be brought before the 2027 Annual Meeting by filing a notice of stockholder's intent to do so no earlier than January 11, 2027, and no later than February 10, 2027. The notice must include all of the information required to be set forth in any such notice by our Bylaws.

Stockholders who intend to submit director nominees for inclusion in our proxy materials for the 2027 Annual Meeting must comply with the requirements of proxy access as set forth in our Bylaws. The stockholder or group of stockholders who wish to submit director nominees pursuant to proxy access must deliver the required materials to us no earlier than the close of business on October 31, 2026, and no later than the close of business on November 30, 2026.

In addition to satisfying the foregoing requirements under our Bylaws, to comply with the universal proxy rules, stockholders who intend to solicit proxies in support of director nominees other than the Company's nominees must provide notice that sets forth the information required by Rule 14a-19 under the Exchange Act no later than March 12, 2027.

If you would like a copy of our Bylaws, please contact our Corporate Secretary at the above address or access our Bylaws on our website at https://www.nisource.com/investors/governance. Failure to comply with our Bylaw procedures and deadlines may preclude presentation and consideration of the matter or of the proposed nominee for election at the 2027 Annual Meeting.

## Form 10-K, Annual Report and Financial Statements
A copy of our 2025 Annual Report on Form 10-K, including the financial statements and the financial statement schedules, but without exhibits, is contained within our Annual Report to Stockholders, which is available on our website at https://www.nisource.com/filings. We will mail a copy of our 2025 Annual Report on Form 10-K, including the financial statements and the financial statement schedules, but without exhibits, free of charge to any stockholder upon written request to NiSource Inc., c/o Corporate Secretary, 801 E. 86th Avenue, Merrillville, Indiana 46410.

## Availability of Proxy Materials
In accordance with SEC rules, we are using the internet as our primary means of furnishing proxy materials to stockholders. Consequently, most stockholders will not receive paper copies of our proxy materials. We will instead send these stockholders a Notice of Internet Availability of Proxy Materials with instructions for accessing the proxy materials, including our Proxy Statement and Annual Report for the year ended December 31, 2025, and voting via the internet. The Notice of Internet Availability of Proxy Materials also provides information on how stockholders may obtain paper copies of our proxy materials if they so choose. This makes the proxy distribution process more efficient and less costly and helps conserve natural resources. If you previously elected to receive our proxy materials electronically, these materials will continue to be sent via email unless you change your election.

## Multiple Stockholders Sharing the Same Address — "Householding"
The SEC has adopted rules that permit companies and intermediaries (e.g., brokers) to satisfy the delivery requirements for proxy statements with respect to two or more stockholders sharing the same address by delivering a single set of proxy materials addressed to those stockholders. This process, which is commonly referred to as "householding," may potentially provide extra convenience for stockholders and cost savings for companies or the intermediary.

You may receive proxy materials through an intermediary who uses householding to deliver proxy materials. If so, a single copy of the proxy materials, including the Notice of Internet Availability of Proxy Materials, may be delivered to multiple stockholders sharing an address unless the affected stockholder provides contrary instructions. Once you have received notice from your broker that they will be householding communications to your address, householding will continue until you are notified otherwise or until you revoke your consent. If this applies to you and you would prefer to receive separate copies of the proxy materials, including the Notice of Internet Availability of Proxy Materials, please notify your broker that you no longer wish to participate in householding. Additionally, you may direct your written request for a copy of the proxy materials to NiSource Inc., c/o Corporate Secretary, 801 E. 86<sup>th</sup> Avenue, Merrillville, Indiana 46410, or you may request a copy by telephone at (614) 460-6000. If your broker is not currently householding (i.e., you received multiple copies of our Notice of Availability of Proxy Materials), and you would like to request delivery of a single copy, you should contact your broker and find out if this option is available to you.

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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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## Other Business
The Board does not intend to bring any other matters before the Annual Meeting other than those described in this Proxy Statement. If any other matters do properly come before the meeting, it is the intention of the persons named in the enclosed form of proxy to vote the proxy in accordance with their judgment on such matters.

Whether or not you plan to attend the virtual Annual Meeting, you can be sure your shares are represented at the meeting by submitting your completed proxy by telephone, through the Internet or by promptly marking, dating, signing and returning the enclosed proxy card.

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|:---|:---|
|  | BY ORDER OF THE BOARD OF DIRECTORS  |
|  | Kimberly S. Cuccia  |
|  | Executive Vice President, General Counsel and  |
|  | Corporate Secretary |
| Dated: March 30, 2026 |  |

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Cautionary Note Regarding Forward-Looking Information

This Proxy Statement contains "forward-looking statements" as defined by the Private Securities Litigation Reform Act of 1995. The use of "might," "may," "could," "should," "anticipates," "believes," "estimates," "expects," "intends," "plans," "projects," "forecasts," "predicts," "assumes," "goal" and other similar words is intended to identify forward-looking statements that involve risk and uncertainty. These forward-looking statements are subject to various factors that could cause actual results to differ materially from the results anticipated in these statements. These factors include, but are not limited to, those discussed in the "FORWARD-LOOKING STATEMENTS AND INFORMATION" and "RISK FACTORS" sections of 2025 Annual Report on Form 10-K, as updated in subsequent reports we file with the SEC. We have no obligation to update or revise forward-looking statements regardless of whether new information, future events, or any other factors affect the information contained in the statements. References to our website or other links to our publications or other information are provided for the convenience of our stockholders. None of the information or data included on our websites or accessible at these links is incorporated into, and will not be deemed to be a part of, this Proxy Statement or any of our other filings with the SEC.

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#### **TABLE OF CONTENTS**

## Appendix A to Proxy Statement
Reconciliation of Consolidated Net Income Available to Common Shareholders to Adjusted Net Income Available to Common Shareholders (Non-GAAP) and Adjusted Earnings Per Share

(Non-GAAP) (Unaudited)

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **For the Year Ended**  | **For the Year Ended**  | **For the Year Ended**  | **For the Year Ended**  | **For the Year Ended**  |
| <br>*(in millions, except per share amounts)* | **2025** | **2024** | **2023** | **2022** | **2021**  |
| **GAAP Net Income Available to Common Shareholders** | **$929.5** | $739.7 | $661.7 | $749.0 | $529.8  |
| **Adjustments to Operating Income:**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Operating Revenues:**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Weather - compared to normal<sup>(1)</sup> | **(32.6)** | 60.4 | 60.6 | (24.9) | 1.2  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FAC adjustment<sup>(2)</sup> | **—** |  |  | 8.0 | —  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Operating Expenses:**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Greater Lawrence Incident | **—** |  |  |  | 9.2  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Plant retirement costs | **—** |  |  |  | 14.1  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NiSource Next initiative<sup>(3)</sup> | **—** |  |  | 3.3 | 24.7  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Massachusetts Business related amounts<sup>(4)</sup> | **—** |  |  | (105.0) | 6.8  |
| Total adjustments to operating income | **(32.6)** | 60.4 | 60.6 | (118.6) | 56.0  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Other Income (Deductions):**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest rate swap settlement gain | **—** |  |  | (10.0) | —  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Income Taxes:**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tax effect of above items<sup>(5)</sup> | 8.3 | (15.5) | (15.8) | 27.8 | (14.6)  |
| &nbsp;&nbsp;&nbsp;&nbsp;**Preferred Dividends:**<br>|  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Preferred dividends redemption premium<sup>(6)</sup> | **—** | 14.0 | 9.8 |  | —  |
| Total adjustments to net income | **(24.3)** | 58.9 | 54.6 | (100.8) | 41.4  |
| **Adjusted Net Income Available to Common Shareholders** | **$905.2** | $798.6 | $716.3 | $648.2 | $571.2  |
| **Diluted Average Common Shares** | 474.5 | 456.0 | 447.9 | 442.7 | 417.3  |
| **GAAP Diluted Earnings Per Share<sup>(7)</sup>** | **$1.95** | $1.62 | $1.48 | $1.70 | $1.27  |
| **% Growth in Diluted Earnings Per Share from Prior Year<sup>(8)</sup>** | **20.4%** | 9.5% | (12.9)% | 33.9% |  |
| Adjustments to diluted earnings per share | **(0.05)** | 0.13 | 0.12 | (0.23) | 0.10  |
| **Adjusted Earnings Per Share** | **$1.90** | $1.75 | $1.60 | $1.47 | $1.37  |
| **% Growth in Adjusted Earnings Per Share from Prior Year<sup>(9)</sup>** | **8.6%** | 9.4% | 8.8% | 7.3% |  |

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&nbsp;&nbsp;&nbsp;&nbsp;(1) Represents the estimated impact of actual weather during the period compared to expected normal weather. Beginning in 2024, the adjustment for NIPSCO Operations excludes the impact of non-controlling interest.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Represents fuel costs deemed over-collected from customers through the FAC mechanism and ordered to be refunded to customers.

&nbsp;&nbsp;&nbsp;&nbsp;(3) Represents incremental severance and third-party consulting costs incurred in connection with the NiSource Next initiative.

&nbsp;&nbsp;&nbsp;&nbsp;(4) 2022 represents proceeds from a property insurance settlement related to the Greater Lawrence Incident. 2021 primarily represents final net working capital adjustments to the purchase price for the loss incurred on the sale of the Massachusetts Business.

&nbsp;&nbsp;&nbsp;&nbsp;(5) Represents income tax expense associated with adjustments to GAAP amounts calculated using the applicable statutory tax rates for legal entities.

&nbsp;&nbsp;&nbsp;&nbsp;(6) 2024 represents the difference between the carrying value on the redemption date of the Series B Preferred Stock and the total amount of consideration paid to redeem. 2023 represents the difference between the carrying value on the redemption date of the Series A Preferred Stock and the total amount of consideration paid to redeem plus an excise tax liability incurred under the IRA, net of the fair value of common shares issued during 2023.

&nbsp;&nbsp;&nbsp;&nbsp;(7) GAAP Diluted Earnings Per Share includes the effects of income allocated to participating securities.

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|  | **A-1** |
| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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#### **TABLE OF CONTENTS**
    APPENDIX A TO PROXY STATEMENT     <br>

&nbsp;&nbsp;&nbsp;&nbsp;(8) % growth taken from change in diluted earnings per share over prior year divided by prior year diluted earnings per share.

&nbsp;&nbsp;&nbsp;&nbsp;(9) % growth take from change in adjusted earnings per share over prior year divided by prior year adjusted earnings per share.

Beginning with the first quarter of 2024, the Company changed its disclosure of non-GAAP results and guidance for net operating earnings available to common shareholders to adjusted net income available to common shareholders and for net operating EPS to adjusted EPS to better align with the presentation used by many companies to report their non-GAAP results. The change reflects a name change only and the calculations of each of these non-GAAP metrics remains consistent with the historical calculations.

Reconciliation of Net Cash Flows from Operating Activities to FFO

to Debt (Adjusted) (Non-GAAP) (Unaudited)

#### Annual FFO/Debt Reconciliation

#### ($ in millions)

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| | |
|:---|:---|
|  | **2025**  |
| Net Cash Flows from Operating Activities | 2362  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Accounts receivable | (273)  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Inventories | (60)  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Accounts payable | 132  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Exchange gas receivable/payable | 136  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Other accruals | 68  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Prepayments and other current assets | (37)  |
| &nbsp;&nbsp;&nbsp;&nbsp;- Other adjustments | (36)  |
| **Funds from Operations (Adjusted)** | **2434**  |
| Long-term debt | 15458  |
| &nbsp;&nbsp;&nbsp;&nbsp;+ Current portion of long-term debt | 20  |
| &nbsp;&nbsp;&nbsp;&nbsp;+ Short-term borrowings | 736  |
| &nbsp;&nbsp;&nbsp;&nbsp;+ Other adjustments | (1110)  |
| **Total Adjusted Debt** | **15103**  |
| **FFO to Debt (Adjusted)** | **16.1%** |

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|  | **A-2** |
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| NISOURCE INC. 2026 PROXY STATEMENT | NISOURCE INC. 2026 PROXY STATEMENT |

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![](ny20055306x771_pc01.jpg)

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