Form DEFA14A HARTFORD MUTUAL FUNDS

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

The Hartford Mutual Funds, Inc.

The Hartford Mutual Funds II, Inc.

Hartford Funds Exchange-Traded Trust

Lattice Strategies Trust

(Name of Registrants as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

HF

Hi,

As we approach the November 5, 2026 Hartford Funds shareholder meeting, I wanted to make sure you have the voting information handy in case your clients reach out about the proxy or the outreach they may be receiving.

Clients who still have their proxy materials can follow the instructions provided to vote online, by phone, or using the QR code included with their materials.

If they no longer have their proxy materials or voting information, they can simply call (855) 496-3017 with their name and address to cast their vote.

You can also direct clients to the Hartford Funds Proxy 2026 website for additional information. Thanks for your help, and please reach out if I can help with any questions.

For additional information, please reach out to the Hartford Funds Sales Desk at       or visit hartfordfunds.com.

Proxies may be solicited from a representative of Hartford Funds Management Company, LLC or any affiliate. Information regarding the persons who may be deemed participants in the solicitation, and a description of their direct and indirect interests in the proposals, by security holdings or otherwise, is included in the definitive proxy statement and other relevant materials filed with the SEC. A copy of the definitive proxy statement can be found at hartfordfunds.com/proxy2026statement.

Forward-Looking Statements. Certain statements in this communication are “forward-looking statements” within the meaning of the federal securities laws. These statements are based on management’s current expectations and assumptions and are subject to risks, uncertainties, and changes in circumstances that could cause actual results to differ materially from those expressed or implied. Forward-looking statements include, among other things, statements regarding the proposed acquisition of Hartford Funds by Wellington Management, the expected timing and completion of the transaction, the outcome of the shareholder vote and required regulatory and fund approvals, and the anticipated effects and benefits to shareholders and statements regarding the anticipated continuity of each Fund’s investment objective, strategies, fees, and portfolio management team following completion of the transaction. There can be no assurance that the proposed transaction will be completed, or that it will be completed on the currently anticipated terms or timing. Neither Hartford Funds nor Wellington Management undertakes any obligation to update or revise any forward-looking statement, whether as a result of new information, future events, or otherwise, except as may be required by law.

Mutual funds are distributed by Hartford Funds Distributors, LLC (HFD), Member FINRA. ETFs are distributed by ALPS Distributors, Inc. (ALPS). Advisory services may be provided by Hartford Funds Management Company, LLC (HFMC) or its

wholly owned subsidiary, Lattice Strategies LLC (Lattice). Certain funds are sub-advised by Wellington Management Company LLP and/or Schroder Investment Management North America Inc (SIMNA). Schroder Investment Management North America Ltd. (SIMNA Ltd) serves as a secondary sub-adviser to certain funds. HFMC, Lattice, Wellington Management, SIMNA, and SIMNA Ltd. are all SEC registered investment advisers. Hartford Funds refers to HFD, HFMC, and Lattice, which are not affiliated with any sub-adviser or ALPS. HFD, 690 Lee Road, Wayne, PA 19087, 1-610-386-4088.

This email message may constitute a commercial electronic mail message under the CAN-SPAM Act of 2003. This email was sent to [email protected].

FOR FINANCIAL PROFESSIONAL OR INSTITUTIONAL INVESTOR USE ONLY / NOT FOR USE WITH THE PUBLIC

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