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The undersigned hereby certify in their capacities as the Chief Executive Officer and Chief Financial Officer of Sound Financial Bancorp, Inc. (the "Registrant") that the Annual Report of the Registrant on Form 10-K for the period ended December 31, 2025 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that the information contained in the report fairly presents, in all material respects, the consolidated financial condition of the Registrant at the end of such period and the results of operations of the Registrant for such period.


Date:	March 18, 2026	By:	/s/ Laura Lee Stewart
			Laura Lee Stewart
			Chief Executive Officer
			(Principal Executive Officer)

		By:	/s/ Wesley Ochs
			Wesley Ochs
			President / Chief Financial Officer
			(Principal Financial Officer)