NI Form 144: 19,834 Restricted Shares Vesting

NI submitted a Form 144 notice indicating proposed sales of Common Stock by an owner using Fidelity Brokerage Services LLC.

Rhea-AI Filing Summary

NI submitted a Form 144 notice indicating proposed sales of Common Stock by an owner using Fidelity Brokerage Services LLC. The filing lists a Restricted Stock Vesting event of 19,834 shares dated 02/27/2026 and an ESPP purchase of 71 shares dated 03/31/2026. The broker is shown as Fidelity Brokerage Services LLC and the filing is associated with the NYSE with a filing date noted as 05/21/2026.

Insights

Securities Counsel

Form 144 reports proposed resale of restricted shares and recent ESPP purchase by an owner.

The excerpt lists a Restricted Stock Vesting of 19,834 shares (02/27/2026) and an ESPP purchase of 71 shares (03/31/2026), with Fidelity Brokerage Services LLC named as broker. Form 144 is a notice of intent to sell by an affiliate or control person and does not itself effect a sale.

Timing and cash‑flow treatment for any resale are not stated in the excerpt; subsequent filings or trade reports would show whether and when these shares were sold.

Key Figures

Filing date: 05/21/2026 Restricted Stock Vesting: 19,834 shares ESPP Purchase: 71 shares

3 metrics

Filing date 05/21/2026 Form 144 date shown in securities information

Restricted Stock Vesting 19,834 shares Vesting date 02/27/2026

ESPP Purchase 71 shares Purchase date 03/31/2026

Key Terms

Form 144, Restricted Stock Vesting, ESPP Purchase, Fidelity Brokerage Services LLC, +1 more

5 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting financial

"Common | 02/27/2026 | Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

ESPP Purchase financial

"Common | 03/31/2026 | ESPP Purchase"

Fidelity Brokerage Services LLC other

"Common | Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

NYSE market

"05/21/2026 | NYSE"

A large, regulated marketplace where stocks and other securities are listed and traded, acting like a global auction house that matches buyers and sellers and helps determine share prices. It matters to investors because listing and trading there provide liquidity, price discovery, and regulatory oversight—making it easier to buy or sell holdings and giving companies a visible platform that can affect credibility and access to capital.

FAQ

What does NI's Form 144 disclose about shares to be sold?

The Form 144 discloses proposed resale activity by an owner using Fidelity Brokerage Services LLC. It lists 19,834 restricted shares vesting on 02/27/2026 and an ESPP purchase of 71 shares on 03/31/2026.

Does the filing confirm that the 19,834 vested shares were sold?

No; this notice indicates intent to sell but does not confirm a completed sale. The excerpt shows a Restricted Stock Vesting of 19,834 shares dated 02/27/2026 but no executed trade details.

Who is the broker listed on the Form 144 for NI?

The broker named is Fidelity Brokerage Services LLC located at 900 Salem Street, Smithfield, RI. The excerpt pairs that broker name with the securities information and the NYSE listing.

What dates are associated with the transactions in this Form 144?

The filing shows a vesting date of 02/27/2026 for restricted stock and an ESPP purchase date of 03/31/2026, with a filing/record date noted as 05/21/2026 and the exchange listed as NYSE.

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Accepted by SEC EDGAR 05/21/2026 - 03:13 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001311411
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	NISOURCE INC.
SEC File Number	001-16189
Address of Issuer	801 EAST 86TH AVE MERRILLVILLE INDIANA 46410-6272
Phone	2196475200
Name of Person for Whose Account the Securities are To Be Sold	Yates Lloyd M
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	19905	950092.39	479439245	05/21/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/27/2026	Restricted Stock Vesting	Issuer			19834	02/27/2026	Compensation
Common	03/31/2026	ESPP Purchase	Issuer			71	03/31/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	05/21/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Lloyd Yates.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)