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): June 12, 2012

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:

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

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

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

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

Supplemental Indenture

On June 15, 2012, Puget Energy, Inc. (the “Company”) entered into a Third Supplemental Indenture (the “Supplemental Indenture”) to the Indenture dated as of December 6, 2010 (the “Base Indenture” and together with the Supplemental Indenture the “Indenture”), with Wells Fargo Bank, National Association, as trustee, pursuant to which the Company issued $450 million principal amount of 5.625% senior secured notes due 2022 (the “Notes”). The Notes mature on July 15, 2022, and accrue interest at 5.625% per annum, payable semiannually in arrears on January 15 and July 15 of each year, commencing on January 15, 2013. The Notes are secured by substantially all of the Company’s assets, which consists primarily of the equity interests it holds in its wholly owned subsidiary, Puget Sound Energy, Inc., and will rank pari passu in right of payment, to the extent of the value of the collateral securing the Notes, with all of the Company’s existing and future senior secured indebtedness.

At any time prior to April 15, 2022, the Company may redeem the Notes at its option, in whole or in part, at any time at a redemption price equal to the greater of (i) 100% of the principal amount of the Notes redeemed and (ii) the sum of the present values of the remaining scheduled payments of principal and interest on the Notes being redeemed, discounted to the redemption date on a semiannual basis at the Treasury Rate plus 50 basis points. At any time on or after April 15, 2022, the Company may redeem the Notes at its option, in whole or in part, at any time at a redemption price equal to 100% of the principal amount being redeemed plus accrued and unpaid interest on the principal amount of the Notes to be redeemed to, but excluding, such redemption date.

Upon the occurrence of a change of control repurchase event (as defined in the Indenture), each holder of Notes will have the right to require the Company to repurchase such holder’s Notes, in whole or in part, at a purchase price equal to 101% of the principal amount thereof, plus any accrued and unpaid interest to the date of purchase.

The Indenture contains covenants limiting the Company’s ability and the Company’s subsidiaries’ ability to create certain liens, enter into sale and lease-back transactions, and consolidate or merge with, or convey, transfer or lease all or substantially all the Company’s assets to, another person. However, each of these covenants is subject to certain exceptions.

The Notes were offered within the United States only to qualified institutional buyers under Rule 144A of the Securities Act of 1933, as amended, and to non-U.S. purchasers under Regulation S under the Securities Act, in an offering exempt from the registration requirements of the Securities Act. Unless registered under the Securities Act, the Notes may not be offered or sold in the United States except pursuant to an exemption from, or in a transaction not subject to, the registration requirements of the Securities Act and applicable state securities laws. This Current Report on Form 8-K shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of the Notes in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

The foregoing description of the Notes and the Indenture is qualified in its entirety by reference to the Supplemental Indenture (including the form of Note attached thereto), a copy of which is filed as Exhibit 4.1 to this Report. The foregoing description of the Notes and the Indenture is also qualified in its entirety by reference to the Base Indenture, which is incorporated herein by reference.

Registration Rights Agreement

On June 15, 2012, in connection with the issuance of the Notes, the Company agreed, pursuant to a Registration Rights Agreement (the “Registration Rights Agreement”), among the Company and J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Wells Fargo Securities, LLC and each of the other initial purchasers named in Schedule A to the Purchase Agreement (the “Initial Purchasers”), to register the Notes under the Securities Act so as to allow holders of the Notes to exchange the Notes for the same principal amount of a new issue of notes (the “Exchange Notes”) with substantially identical terms, except that the Exchange Notes will generally be freely transferable under the Securities Act. If the Company fails to comply with these obligations on time (each a “registration default”), the Company will be required to pay additional interest at a rate of 0.25% per annum for the first 90-day period following a registration default and an additional 0.25% per annum for each subsequent 90-day period that such additional interest continues to accrue (provided that such rate may not exceed 1.00% per annum).

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The foregoing description of the Registration Rights Agreement is qualified in its entirety by reference to the Registration Rights Agreement, a copy of which is filed as Exhibit 4.4 to this Report.

Certain Relationships

Certain Initial Purchasers and their affiliates have engaged in, and may in the future engage in, investment banking and other commercial dealings in the ordinary course of business with the Company or its affiliates, for which they have received, or may in the future receive, customary fees and commissions. Affiliates of the Initial Purchasers are also agents and/or lenders under the Company’s senior secured credit facility and will receive customary fees related thereto. Affiliates of certain of these Initial Purchasers are also counterparties to hedges that the Company has entered into in relation to the credit facility. The Company intends to use a portion of the proceeds from this offering to repay a portion of the outstanding term loan under the senior secured credit facility, and possibly to unwind the associated hedges. Affiliates of certain Initial Purchasers hold a substantial portion of the term loan and are the principal counterparties to the associated hedges. JPMorgan Chase Bank, N.A., an affiliate of J.P. Morgan Securities, LLC, serves as the Administrative Agent under our senior secured credit facility and as such, receives customary fees and commissions for such services.

The information included in Item 1.01 of this Report is incorporated by reference into this Item 2.03.

Purchase Agreement

On June 12, 2012, the Company entered into a purchase agreement (the “Purchase Agreement”) with the Initial Purchasers with respect to the initial purchase and sale of the Notes. 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 99.1 to this Report.

(d) Exhibits.

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SIGNATURE

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

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EXHIBIT INDEX

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