NiSource (NI) EVP Melody Birmingham sells 12,500 shares in open-market trades

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

NiSource Inc. executive Melody Birmingham reported open-market sales of company stock. She sold 10,000 shares of Common Stock on May 14, 2026 at $47.185 per share and 2,500 shares on May 20, 2026 at $47.430 per share, totaling 12,500 shares. After these sales, she directly holds 116,036.324 shares, which include shares acquired through dividend reinvestments. The filing notes that it was submitted late due to an administrative error.

Insider Trade Summary

Net Seller: 12,500 shares ($590,425)

Net Sell 2 txns

Insider BIRMINGHAM MELODY

Role EVP & Grp President, Utilities

Sold 12,500 shs ($590K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,500	$47.43	$119K
Sale	Common Stock	10,000	$47.185	$472K

Holdings After Transaction: Common Stock — 116,036.324 shares (Direct, null)

Footnotes (1)

Late due to administrative error. Includes shares acquired through dividend reinvestments.

Key Figures

Shares sold May 14, 2026: 10,000 shares Shares sold May 20, 2026: 2,500 shares Total shares sold: 12,500 shares +3 more

6 metrics

Shares sold May 14, 2026 10,000 shares Open-market sale of Common Stock at $47.185 per share

Shares sold May 20, 2026 2,500 shares Open-market sale of Common Stock at $47.430 per share

Total shares sold 12,500 shares Aggregate of reported open-market sales in this Form 4

Holdings after transactions 116,036.324 shares Direct ownership of NiSource Common Stock after May 20, 2026 sale

Sale price May 14, 2026 $47.185/share Open-market sale of 10,000 Common Stock shares

Sale price May 20, 2026 $47.430/share Open-market sale of 2,500 Common Stock shares

Key Terms

open-market sale, Common Stock, dividend reinvestments, Form 4, +1 more

5 terms

open-market sale financial

"transaction_action: "open-market sale""

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.

Common Stock financial

"security_title: "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.

dividend reinvestments financial

"Includes shares acquired through dividend reinvestments."

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

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.

EVP & Grp President, Utilities financial

"officer_title: "EVP & Grp President, Utilities""

Form 4 Insider Transactions: What Each Field Means →

05/21/2026 - 04:16 PM

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^*

BIRMINGHAM MELODY

(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 & Grp President, Utilities

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

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	05/14/2026		S		10,000⁽¹⁾	D	$47.185	117,899.295	D
Common Stock	05/20/2026		S		2,500	D	$47.43	116,036.324⁽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. Late due to administrative error.

2. Includes shares acquired through dividend reinvestments.

	/s/ Ashley Bancroft, Attorney-in-Fact	05/21/2026
	** 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

FAQ

What insider transactions did NiSource (NI) executive Melody Birmingham report?

Melody Birmingham reported two open-market sales of NiSource Common Stock. She sold 10,000 shares on May 14, 2026 and 2,500 shares on May 20, 2026, for a total of 12,500 shares sold in these transactions.

At what prices did Melody Birmingham sell NiSource (NI) shares?

She sold 10,000 NiSource shares at $47.185 per share on May 14, 2026. She then sold 2,500 shares at $47.430 per share on May 20, 2026, both classified as open-market sales of Common Stock.

How many NiSource (NI) shares does Melody Birmingham hold after these sales?

Following the reported transactions, Melody Birmingham directly holds 116,036.324 shares of NiSource Common Stock. This figure includes shares that were acquired through dividend reinvestments, as specifically noted in the filing footnotes.

What is Melody Birmingham’s role at NiSource (NI) in this Form 4 filing?

In this filing, Melody Birmingham is identified as an officer of NiSource, serving as EVP & Group President, Utilities. The transactions reported reflect her direct ownership activity in NiSource Common Stock as a company executive.

Were Melody Birmingham’s NiSource (NI) transactions reported on time to the SEC?

The filing states it was late due to an administrative error. This means the Form 4, which reports Melody Birmingham’s recent open-market sales of NiSource Common Stock, was not filed within the usual SEC reporting timeframe.

Do Melody Birmingham’s reported NiSource (NI) holdings include dividend reinvestments?

Yes. A footnote explains that her reported post-transaction holdings of 116,036.324 NiSource shares include shares acquired through dividend reinvestments. This clarifies that not all currently held shares came from open-market purchases.