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): May 6, 2026

Not Applicable

(Former name or former address, if changed since last report)

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 (see General Instruction A.2. below):

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

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.

On May 6, 2026, Eversource Energy (the “Company”) issued a news release announcing its unaudited results of operations for the three months ended March 31, 2026, and related financial information for certain of its subsidiaries as of and for the same period. A copy of the news release and related unaudited financial reports are attached as Exhibits 99.1 and 99.2 and are incorporated herein by reference thereto.

The information contained in this Item 2.02, including Exhibits 99.1 and 99.2, shall not be deemed “filed” with the Securities and Exchange Commission (“SEC”) nor incorporated by reference in any registration statement filed by Eversource Energy or any subsidiary thereof under the Securities Act of 1933, as amended (the “Securities Act”), unless specified otherwise.

(a)           On May 6, 2026, the Company held its 2026 Annual Meeting of Shareholders.

(b)           Shareholders voted on the proposals set forth below. For more information on the following proposals, see the Company’s Proxy Statement dated March 27, 2026. On March 11, 2026, the record date for the Annual Meeting, there were 375,845,345 common shares outstanding and entitled to vote. At the Annual Meeting, 333,132,974 common shares were represented, in person or by proxy, constituting a quorum.

(1)           Election of Trustees. The shareholders elected each of the nine nominees to the Board of Trustees for a one-year term by a majority of the outstanding common shares:

(2)           The shareholders approved, on an advisory basis, the compensation of the Company’s 2025 Named Executive Officers:

(3)           The shareholders ratified the selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for 2026:

(4)           The shareholders did not approve a shareholder proposal titled “Independent Board Chairman.”

On May 7, 2026, Eversource Energy will webcast a conference call with financial analysts during which senior management will discuss the Company’s financial performance through the first quarter of 2026. The webcast will be accessible from the Investors section of the Eversource Energy website at www.eversource.com. Attached as Exhibit 99.3 and incorporated herein by reference are the slides to be discussed by Eversource Energy during the conference call.

The information contained in this Item 7.01, including Exhibit 99.3, shall not be deemed “filed” with the SEC nor incorporated by reference into any registration statement filed by Eversource Energy or any subsidiary thereof under the Securities Act, unless specified otherwise.

SIGNATURE

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