EVERSOURCE ENERGY

Regulatory Filings • Oct 15, 2025

FWP 1 tm2528507d2_fwp.htm FWP

Free Writing Prospectus

Filed pursuant to Rule 433

Registration No. 333-286362

October 15, 2025

EVERSOURCE ENERGY

Pricing Term Sheet

| Issuer: | Eversource
Energy |
| --- | --- |
| Security: | $600,000,000
4.45% Senior Notes, Series HH, Due 2030 |
| Principal
Amount: | $600,000,000 |
| Maturity
Date: | December 15,
2030 |
| Coupon: | 4.45% |
| Benchmark
Treasury: | 3.625%
due September 30, 2030 |
| Benchmark
Treasury Price / Yield: | 99-31+ / 3.628% |
| Spread
to Benchmark Treasury: | 87 basis points |
| Yield
to Maturity: | 4.498% |
| Price
to Public: | 99.771% of the principal amount |
| Interest
Payment Dates: | Semi-annually
in arrears on June 15 and December 15 of each year, commencing on June 15, 2026 |
| Optional Redemption Provisions: | Make-whole
call at any time prior to November 15, 2030 (one month prior to the Maturity Date) at a discount rate of Treasury plus 15 basis
points and on or after such date at par |
| Trade
Date: | October 15,
2025 |
| Settlement
Date: | October 17,
2025 (T+2) |
| CUSIP
/ ISIN: | 30040W
BB3 / US30040WBB37 |
| Expected
Ratings*: | Baa2
(Moody’s); BBB (S&P); BBB (Fitch) |
| Joint
Book-Running Managers: | BofA Securities, Inc. J.P. Morgan Securities LLC Morgan Stanley & Co. LLC PNC Capital Markets LLC RBC Capital Markets, LLC U.S. Bancorp Investments, Inc. |
| Co-Managers: | Samuel
A. Ramirez & Company, Inc. Siebert Williams Shank & Co., LLC |

• Pursuant to Rule 15c6-1 under the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in one business day, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade Securities in the secondary market prior to the date that is one business day before the settlement date will be required, by virtue of the fact that the Securities will initially settle T+2 (on October 17, 2025) to

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specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of Securities who wish to trade Securities prior to the date that is one business day before the settlement date should consult their own advisors.

** Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The issuer has filed a registration statement (including a prospectus, as supplemented) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus (as supplemented) in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus (as supplemented) if you request it by calling BofA Securities, Inc. toll-free at (800) 294-1322; J.P. Morgan Securities LLC collect at (212) 834-4533; Morgan Stanley & Co. LLC toll-free at (866) 718-1649; PNC Capital Markets LLC toll-free at (855) 881-0697; RBC Capital Markets, LLC toll-free at (866) 375-6829; or U.S. Bancorp Investments, Inc. toll-free at (877) 558-2607.

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