Company: SFBC
Filing Date: 2025-04-16
Form Type: DEF 14A
Source: 0001541119-25-000013
Chunk: 2

Company: Sound Financial Bancorp, Inc.
Filing Date: 2025-04-16
Form: DEF 14A
Chunk 2
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 by mailing a completed proxy card as soon as possible. Regardless of the number of shares you own, your vote is very important. Please act today.

BY ORDER OF THE BOARD OF DIRECTORS

/s/ Laura Lee Stewart

Laura Lee Stewart

President and Chief Executive Officer

Seattle, Washington

April 16, 2025

<div align='center'>2400 3 rd Avenue, Suite 150

Seattle, Washington 98121

(206) 448-0884</div>

### PROXY STATEMENT

### INTRODUCTION
The Board of Directors of Sound Financial Bancorp, Inc. is using this proxy statement to solicit proxies from the holders of common stock of Sound Financial Bancorp, Inc. for use at our upcoming annual meeting of shareholders. The annual meeting of shareholders will be held at 10:00 a.m., Pacific Time on Wednesday, May 27, 2025, at our executive offices, located at 2400 3rd Avenue, Suite 150, Seattle, Washington. We strongly recommend that you vote your shares in advance of the annual meeting even if you plan to attend the meeting.

At the annual meeting, shareholders will be asked to vote on three proposals, which are set forth in the accompanying Notice of Annual Meeting of Shareholders and are described in more detail below. Shareholders also will consider any other matters that may properly come before the annual meeting or any adjournment or postponement of the annual meeting, although the Board of Directors knows of no other business to be presented. Sound Financial Bancorp, Inc. is referred to in this proxy statement from time to time as “Sound Financial Bancorp,” the “Company,” “we,” “us” or “our.” Certain of the information in this proxy statement relates to Sound Community Bank, a wholly owned subsidiary of the Company, which is referred to in this proxy statement from time to time as the “Bank.”

By submitting your proxy, either by executing and returning the enclosed proxy card or by voting electronically via the Internet or by telephone, you authorize the Company’s Board of Directors to represent you and vote your shares at the annual meeting in accordance with your instructions. The Board of Directors also may vote your shares to adjourn the annual meeting from time to time and will be authorized to vote your shares at any adjournments or postponements of the annual meeting. This proxy statement and the accompanying materials are first being made available to shareholders on or about April 16, 2025.

Your vote is important. You may vote your