NiSource director granted 3,807-share RSU award

NiSource Inc. director Deborah A. Henretta received an equity grant tied to her annual board compensation.

Rhea-AI Filing Summary

NiSource Inc. director Deborah A. Henretta received an equity grant tied to her annual board compensation. On May 11, 2026, she was awarded 3,807 shares of common stock in the form of restricted stock units at a reference price of $47.03 per share under the 2020 Omnibus Plan. These RSUs, including units from dividend equivalent provisions, vest in full on the first anniversary of the grant date, after which each unit converts into one share of common stock. Following this award, her direct holdings increased to 77,152.048 shares.

Insider Trade Summary

Grant/Award: 3,807 shares

Grant/Award 1 txn

Insider HENRETTA DEBORAH A

Role Director

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

Holdings After Transaction: Common Stock — 77,152.048 shares (Direct)

Footnotes (2)

1. 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.
2. 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 shares Grant reference price: $47.03 per share Holdings after grant: 77,152.048 shares +1 more

4 metrics

RSUs granted 3,807 shares Restricted stock unit award on May 11, 2026

Grant reference price $47.03 per share Value used for the May 11, 2026 RSU grant

Holdings after grant 77,152.048 shares Total direct NiSource common stock following the RSU award

Vesting period 1 year RSUs vest in full on first anniversary of grant date

Key Terms

restricted stock units, dividend equivalent provisions, 2020 Omnibus Plan, non-employee director

4 terms

restricted stock units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

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"

non-employee director financial

"granted as part of the non-employee director's annual compensation"

FAQ

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

What insider transaction did NiSource (NI) disclose for Deborah A. Henretta?

NiSource reported that director Deborah A. Henretta received a grant of 3,807 restricted stock units as part of her annual non-employee director compensation. Each RSU corresponds to one share of NiSource common stock upon vesting under the 2020 Omnibus Plan.

At what price were the NiSource (NI) restricted stock units granted to the director?

The 3,807 restricted stock units granted to Deborah A. Henretta were valued at $47.03 per unit. This figure reflects the reference grant price used for the equity award, not an open-market purchase or sale of NiSource common stock.

When do Deborah A. Henretta’s NiSource (NI) RSUs vest?

The restricted stock units granted to Deborah A. Henretta vest in full on the first anniversary of the May 11, 2026 grant date. Upon vesting, each RSU converts into one share of NiSource common stock, subject to the plan’s acceleration conditions.

How many NiSource (NI) shares does Deborah A. Henretta hold after this grant?

After receiving the 3,807-share restricted stock unit grant, Deborah A. Henretta directly holds 77,152.048 shares of NiSource common stock. This total includes shares underlying RSUs granted pursuant to the company’s 2020 Omnibus Plan and related dividend equivalent RSUs.

Are dividend equivalents included in the NiSource (NI) RSU grant to the director?

Yes. The reported amount includes restricted stock units credited under the dividend equivalent provisions of the RSU awards. These dividend-equivalent RSUs are subject to the same vesting conditions as the original RSU grant for Deborah A. Henretta.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/13/2026 - 04:18 PM EDT Learn about SEC filing dates

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^*

HENRETTA DEBORAH A

(Last) (First) (Middle)

NISOURCE INC.

801 E. 86TH AVENUE

(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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/11/2026		A		3,807(1)	A	$47.03	77,152.048(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

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)