NiSource (NI) EVP Melanie B. Berman sells 15,000 shares in open-market trade

Rhea-AI Filing Summary

NiSource Inc. executive Melanie B. Berman, EVP Administration & CHRO, sold 15,000 shares of Common Stock in an open-market transaction. The sale took place on May 22, 2026 at a weighted average price of $47.68 per share.

Following this transaction, she continues to hold 35,989.9347 NiSource shares directly. The filing notes that the sale was executed through multiple trades at prices ranging from $47.670 to $47.713 per share, with the weighted average reported in the form.

Insider Trade Summary

Net Seller: 15,000 shares ($715,200)

Net Sell 1 txn

Insider Berman Melanie B.

Role EVP Administration & CHRO

Sold 15,000 shs ($715K)

Type	Security	Shares	Price	Value
Sale	Common Stock	15,000	$47.68	$715K

Holdings After Transaction: Common Stock — 35,989.935 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 15,000 shares Weighted average sale price: $47.68 per share Post-transaction holdings: 35,989.9347 shares +1 more

4 metrics

Shares sold 15,000 shares Open-market sale on May 22, 2026

Weighted average sale price $47.68 per share Common Stock transaction on May 22, 2026

Post-transaction holdings 35,989.9347 shares Direct ownership after reported sale

Sale price range $47.670–$47.713 per share Multiple trades comprising the 15,000-share sale

Key Terms

open-market sale, weighted average price, Common Stock, Form 4

4 terms

open-market sale financial

"transaction_action is described as an open-market sale of Common Stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported is a weighted average price across multiple trades"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Common Stock financial

"The transaction involved 15,000 shares of Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"Insider activity is disclosed through a Form 4 filing"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Berman Melanie B.

(Last) (First) (Middle)

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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP Administration & CHRO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

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	05/22/2026		S		15,000(1)	D	$47.68	35,989.9347	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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $47.670 to $47.713, inclusive. The reporting person undertakes to provide to NiSource Inc., any security holder of NiSource Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Ashley Bancroft, Attorney-in-Fact	05/27/2026
	** 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)

FAQ

What insider transaction did NiSource (NI) report for Melanie B. Berman?

NiSource reported that Melanie B. Berman, EVP Administration & CHRO, sold 15,000 shares of Common Stock in an open-market transaction on May 22, 2026. The weighted average sale price was $47.68 per share, executed through multiple trades within a narrow price range.

At what price did Melanie B. Berman sell NiSource (NI) shares?

The reported weighted average sale price was $47.68 per NiSource share. According to the disclosure, the 15,000 shares were sold in multiple transactions at prices ranging from $47.670 to $47.713 per share, all on May 22, 2026.

How many NiSource (NI) shares does Melanie B. Berman hold after the sale?

After selling 15,000 shares, Melanie B. Berman directly holds 35,989.9347 NiSource Common Stock shares. This figure represents her reported direct ownership following the May 22, 2026 open-market sale described in the Form 4 filing.

Was the NiSource (NI) insider transaction a buy or a sell?

The transaction was a sell. Melanie B. Berman conducted an open-market sale of 15,000 shares of NiSource Common Stock at a weighted average price of $47.68 per share, as reported under transaction code “S” for a sale.

Did the NiSource (NI) Form 4 mention multiple trade prices for the sale?

Yes. The Form 4 notes that the 15,000 shares were sold in multiple transactions. Prices ranged from $47.670 to $47.713 per share, and the weighted average price of these trades, $47.68, is what appears in the main transaction detail.