NISOURCE director awarded 3,807 RSUs

NISOURCE INC. director Deborah Hersman received an equity grant as part of her annual board compensation.

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Rhea-AI Filing Summary

NISOURCE INC. director Deborah Hersman received an equity grant as part of her annual board compensation. She was awarded 3,807 restricted stock units at a reference value of $47.03 per unit, increasing her direct holdings to 47,199.674 common shares.

The RSUs vest in full on the first anniversary of the grant date, subject to certain acceleration conditions, and each RSU will convert into one share of common stock upon vesting under the company’s 2020 Omnibus Plan. The reported amount also reflects additional RSUs credited through dividend equivalent provisions, which follow the same vesting schedule.

Insider Trade Summary

Grant/Award: 3,807 shares

Grant/Award 1 txn

Insider Hersman Deborah

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,807	$47.03	$179K

Holdings After Transaction: Common Stock — 47,199.674 shares (Direct)

Footnotes (2)

F1. Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the first anniversary of the grant date, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.
F2. This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards, and which are subject to the same vesting conditions as the underlying RSUs.

Key Figures

RSUs granted: 3,807 units Grant reference price: $47.03 per unit Shares after transaction: 47,199.674 shares +1 more

4 metrics

RSUs granted 3,807 units Restricted stock unit award as part of annual director compensation

Grant reference price $47.03 per unit Reference price for RSU grant

Shares after transaction 47,199.674 shares Total direct holdings following RSU award

Vesting schedule Full vesting after one year RSUs vest on first anniversary of grant date, subject to conditions

Key Terms

restricted stock units ("RSU"), dividend equivalent provisions, 2020 Omnibus Plan

3 terms

restricted stock units ("RSU") financial

"Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation"

dividend equivalent provisions financial

"This amount includes RSUs received pursuant to the dividend equivalent provisions of the RSU awards"

2020 Omnibus Plan financial

"upon vesting pursuant to the Company's 2020 Omnibus Plan"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did NISOURCE INC. (NI) director Deborah Hersman report on this Form 4?

Deborah Hersman reported an equity award under NISOURCE INC.’s compensation program. She received 3,807 restricted stock units, each representing one future share of common stock upon vesting, as part of her annual non-employee director compensation.

How many NISOURCE INC. RSUs did Deborah Hersman receive and at what value?

She received 3,807 restricted stock units with a reference value of $47.03 per unit. These RSUs represent a contingent right to receive one share of NISOURCE INC. common stock per unit when vesting conditions are satisfied.

When do Deborah Hersman’s NISOURCE INC. RSUs vest?

The RSUs vest in full on the first anniversary of the grant date, subject to certain acceleration conditions. Once vested, each restricted stock unit converts into one share of NISOURCE INC. common stock under the company’s 2020 Omnibus Plan.

How many NISOURCE INC. shares does Deborah Hersman hold after this RSU grant?

Following the RSU award, her reported direct holdings total 47,199.674 shares of NISOURCE INC. common stock. This figure includes the newly granted RSUs and additional units credited through dividend equivalent provisions tied to prior RSU awards.

Are dividend equivalents included in Deborah Hersman’s NISOURCE INC. RSU balance?

Yes. The reported amount includes RSUs received through dividend equivalent provisions. These additional units accrue when dividends are paid and are subject to the same vesting conditions as the underlying restricted stock unit awards.

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Accepted by SEC EDGAR 05/13/2026 - 04:20 PM EDT

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Hersman Deborah

(Last)

(First)

(Middle)

801 E. 86TH AVE

(Street)

MERRILLVILLE

INDIANA

46410

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
NISOURCE INC. [ NI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/11/2026		A		3,807⁽¹⁾	A	$47.03	47,199.674⁽²⁾	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents an award of restricted stock units ("RSU") granted as part of the non-employee director's annual compensation and which vests in full on the first anniversary of the grant date, subject to certain acceleration conditions. RSUs represent a contingent right to receive one share of the Company's common stock upon vesting pursuant to the Company's 2020 Omnibus Plan.

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

	/s/ Ashley Bancroft, Attorney-in-Fact	05/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR