UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): September 15, 2025

PUGET SOUND ENERGY, INC.

Exact name of registrant as specified in its charter

A Washington Corporation

(Exact name of registrant as specified in its charter)

1-4393

355 110th Ave NE

Bellevue, WA 98004

91-0374630

(Commission

File Number)

(State of incorporation,

address of principal executive offices)

(I.R.S. Employer

Identification Number)

(425) 454-6363

(Telephone)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

symbol(s)

Name of each exchange

on which registered

N/A

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01.

Other Events.

On September 15, 2025, Puget Sound Energy, Inc. (“Puget Sound Energy”) consummated its public offering of $500,000,000 principal amount of 5.598% Senior Notes due September 15, 2055 (the “Senior Notes”) pursuant to a purchase agreement dated September 8, 2025 (the “Purchase Agreement”) with Mizuho Securities USA LLC, MUFG Securities Americas Inc., and RBC Capital Markets, LLC, and each of the other underwriters named in Schedule A thereto (collectively, the “Underwriters”). The Senior Notes were issued under an Indenture dated as of December 1, 1997, as supplemented by a Fifth Supplemental Indenture thereto, dated as of May 23, 2018, between the Company and U.S. Bank National Association, as trustee. Puget Sound Energy intends to use the proceeds from the issuance of the Senior Notes to pay down its outstanding commercial paper, if any, fund capital expenditures and for general corporate purposes.

The Senior Notes were registered pursuant to a registration statement (Registration No. 333-289101) on Form S-3 under the Securities Act of 1933 that Puget Sound Energy filed and which became effective upon filing with the U.S. Securities and Exchange Commission (the “Commission”) on July 30, 2025 (the “Registration Statement”). The Registration Statement was supplemented by a Prospectus Supplement setting forth the terms of the Senior Notes that Puget Sound Energy filed with the Commission on September 8, 2025.

Initially, the Senior Notes will be secured by a series of Puget Sound Energy’s electric utility first mortgage bonds, referred to as “Pledged First Mortgage Bonds,” which are secured by the Company’s electric utility property. The Pledged First Mortgage Bonds were issued under the Company’s First Mortgage, dated as of June 2, 1924, as supplemented by a Ninety-Second Supplemental Indenture thereto, dated as of May 1, 2013, between the Company and U.S. Bank National Association, as trustee.

The foregoing description of the Purchase Agreement is qualified in its entirety by reference to the Purchase Agreement, a copy of which is filed as Exhibit 1.1 to this Report.

Perkins Coie LLP, counsel to Puget Sound Energy, has issued an opinion, dated September 15, 2025, regarding the legality of the Senior Notes. A copy of the opinion as to legality is filed as Exhibit 5.1 hereto.

Item 9.01.

Financial Statements and Exhibits

(d) Exhibits


Exhibit Number		Description

1.1		Purchase Agreement dated September 8, 2025, between Puget Sound Energy, Inc., Mizuho Securities USA LLC, MUFG Securities Americas Inc., and RBC Capital Markets, LLC, and each of the other underwriters named in Schedule A thereto.

5.1		Opinion of Perkins Coie LLP.

23.1		Consent of Perkins Coie LLP (included in Exhibit 5.1 hereto).

104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

PUGET SOUND ENERGY, INC.

Dated: September 15, 2025

/s/ Jamie Martin

Jamie Martin

Senior Vice President and Chief Financial Officer

PUGET SOUND ENERGY INC 8-K