WELLTOWER INC.

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

(Amendment No. )

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Preliminary Proxy Statement

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Definitive Proxy Statement

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Soliciting Material Under §240.14a-12

Welltower Inc.

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Notice of VirtualAnnual Meetingof Shareholders

9:30 A.M. Central Time

TO THE SHAREHOLDERS OF WELLTOWER INC.:

The 2026 Annual Meeting of Shareholders of Welltower Inc. (the “Annual Meeting”) will be held on May 21, 2026, at 9:30 A.M. Central Time. The Annual Meeting will be held ina virtual format, at www.virtualshareholdermeeting.com/WELL2026, for the purpose of considering and acting upon each item described below and transacting any other business that properly comes before the meeting:

(1)The election of the nine director nominees named in the accompanying proxy statement to hold office until the next annual meeting of shareholders and until their respective successors have been duly elected and qualified;

(2)The ratification of the selection of Ernst & Young LLP (“EY”) as Welltower’s independent registered public accounting firm for the year ending December 31, 2026; and

(3)The approval, on an advisory basis, of the compensation of our named executive officers.

The Board of Directors of Welltower unanimously recommends that you vote FOReach nominee named in Proposal 1 and FOR Proposals 2 and 3. Shareholders of record at the close of business on March 26, 2026 (the “Record Date”) will be entitled to notice of, and to vote at, the Annual Meeting or any adjournment thereof. Information relating to the matters to be considered and voted on at the Annual Meeting appears in the accompanying proxy statement.

HOW TO VOTE IN ADVANCE OF THE VIRTUAL ANNUAL MEETING

We have endeavored to provide shareholders attending the Annual Meeting with the same rights and opportunities to participate as they would have at an in-person meeting. You will be able to attend the Annual Meeting online and vote by visitingwww.virtualshareholdermeeting.com/WELL2026. Shareholders of record can access the meeting website using the 16-digit control number included on their proxy card or Notice of Internet Availability of Proxy Materials (the “Notice”). Beneficial owners should review the proxy materials and their voting instruction form or Notice for information on how to vote in advance of, and how to participate in, the Annual Meeting. When accessing our Annual Meeting, please allow ample time for online check-in, which will begin at 9:00 A.M. Central Time on May 21, 2026. A list of shareholders entitled to vote at the Annual Meeting will be open to examination by any shareholder for any purpose germane to the Annual Meeting during normal business hours for a period of ten days ending on the day before the Annual Meeting at our principal executive offices located at 4500 Dorr Street, Toledo, Ohio 43615.

TABLE OF CONTENTS

In this Proxy Statement, the terms “Welltower,” “we,” “our,” and the “Company” refer to Welltower Inc. This Proxy Statement includes references to websites, website addresses, and additional materials found on those websites. The content of any websites and materials named, hyperlinked, or otherwise referenced in this document are not incorporated into this Proxy Statement by reference or in any other report or document we file with the SEC, and any references to such websites and materials are intended to be inactive textual references only.

This document includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our sustainability goals, commitments, and strategies. These statements involve risks and uncertainties. Actual results could differ materially from any future results expressed or implied by the forward-looking statements for a variety of reasons, including due to the risks and uncertainties that are discussed in our most recently filed periodic reports on Form 10-K and Form 10-Q and subsequent filings. We assume no obligation to update any forward-looking statements or information, which speak as of their respective dates.

The approximate date on which these materials will be first made available or sent to shareholders is April 10, 2026.