EWSB Bancorp, Inc. Watch

from 8-K 38 pages Up to 1,006,250 Shares (Subject to Increase Up to 1,157,188 in Shares the Event of an Increase in the Pro Forma Market Value of the Company’s Common Stock) EWSB Bancorp, Inc. (A Maryland Corporation) Common Stock (Par Value $0.01 Per Share) Agency Agreement June 28, 2024

from S-1/A 38 pages Up to 1,006,250 Shares (Subject to Increase Up to 1,157,188 in Shares the Event of an Increase in the Pro Forma Market Value of the Company’s Common Stock) EWSB Bancorp, Inc. (A Maryland Corporation) Common Stock (Par Value $0.01 Per Share) Agency Agreement [May] [•], 2024

from S-1 6 pages We Understand That the Boards of Directors of Wisconsin Mutual Bancorp, Mhc (The “Mhc”), EWSB Bancorp, Inc. (The “Holding Company”) and East Wisconsin Savings Bank (The “Bank”) Are Considering the Adoption of a Plan of Conversion and Reorganization (The “Plan”) Pursuant to Which the Mhc Will Be Converted From the Mutual Holding Company Form of Organization to the Stock Holding Company Form (The “Conversion”) and in Connection Therewith a To-Be-Organized Holding Company for the Bank (The “New Holding Company”) Will Offer and Sell Certain Shares of Its Common Stock (The "Shares") in a Public Offering. the Mhc, the Holding Company, the New Holding Company, and the Bank Are Sometimes Collectively Referred to Herein as the “Company” and Their Respective Boards of Directors Are Sometimes Collectively Referred to as the “Boards.” Performance Trust Capital Partners, LLC (“Performance Trust”) Is Pleased to Assist the Company on a Best Efforts Basis With the Offering (As Defined Below), and This Letter (The “Agreement”) Shall Confirm the Terms and Conditions of Our Engagement as Records Agent and Stock Information Center Manager to the Company

from S-1 8 pages We Understand That the Boards of Directors of Wisconsin Mutual Bancorp, Mhc (The “Mhc”), EWSB Bancorp, Inc. (The “Holding Company”) and East Wisconsin Savings Bank (The “Bank”) Are Considering the Adoption of a Plan of Conversion and Reorganization (The “Plan”) Pursuant to Which the Mhc Will Be Converted From the Mutual Holding Company Form of Organization to the Stock Holding Company Form (The “Conversion”) and in Connection Therewith a To-Be-Organized Holding Company for the Bank (The “New Holding Company”) Will Offer and Sell Certain Shares of Its Common Stock (The "Shares") in a Public Offering. the Mhc, Holding Company, the New Holding Company, and the Bank Are Sometimes Collectively Referred to Herein as the “Company” and Their Respective Boards of Directors Are Sometimes Collectively Referred to as the “Boards. Performance Trust Capital Partners, LLC (“Performance Trust”) Is Pleased to Assist the Company on a Best Efforts Basis With the Offering (As Defined Below), and This Letter (The “Agreement”) Shall Confirm the Terms and Conditions of Our Engagement as Exclusive Marketing Agent to the Company