CFSB Bancorp Inc. Watch

from 8-K 33 pages Up to 2,472,500 Shares (Subject to Increase Up to 2,843,375 Shares in the Event of an Increase in the Pro Forma Market Value of the Company’s Common Stock) CFSB Bancorp, Inc. (A Federal Corporation in Organization) Common Stock (Par Value $0.01 Per Share) Agency Agreement November 10, 2021

from S-1/A 33 pages Up to 2,472,500 Shares (Subject to Increase Up to 2,843,375 Shares in the Event of an Increase in the Pro Forma Market Value of the Company’s Common Stock) CFSB Bancorp, Inc. (A Federal Corporation in Organization) Common Stock (Par Value $0.01 Per Share) Agency Agreement November [•], 2021

from S-1/A 15 pages Under the Terms of the Plan and Applicable Regulations, the Shares Will Be Offered First to Eligible Depositors of the Bank and the Company’s Tax-Qualified Employee Stock Benefit Plans (The “Subscription Offering”). Shares Not Subscribed for in the Subscription Offering, if Any, May Be Offered to the General Public by Piper Sandler on a Best Efforts Basis (“Syndicated Offering” and Together With the Subscription Offering, the “Offering”). Services Piper Sandler Will Work With the Company and Its Management, Counsel, Accountants and Other Advisors in Preparing for and Completing the Offering and Anticipate That Its Services Will Include the Following: 1. Consulting as to the Marketing Implications of Any Aspect of the Plan, Including the Percentage of the Holding Company’s Common Stock to Be Offered in the Offering; 2. Reviewing With the Board the Financial Impact of the Offering on the Company, Based Upon the Independent Appraiser’s Appraisal of the Holding Company’s Common Stock;

from S-1 15 pages Under the Terms of the Plan and Applicable Regulations, the Shares Will Be Offered First to Eligible Depositors of the Bank and the Company’s Tax-Qualified Employee Stock Benefit Plans (The “Subscription Offering”). Shares Not Subscribed for in the Subscription Offering, if Any, May Be Offered to the General Public by Piper Sandler on a Best Efforts Basis (“Syndicated Offering” and Together With the Subscription Offering, the “Offering”). Services Piper Sandler Will Work With the Company and Its Management, Counsel, Accountants and Other Advisors in Preparing for and Completing the Offering and Anticipate That Its Services Will Include the Following: 1. Consulting as to the Marketing Implications of Any Aspect of the Plan, Including the Percentage of the Holding Company’s Common Stock to Be Offered in the Offering; 2. Reviewing With the Board the Financial Impact of the Offering on the Company, Based Upon the Independent Appraiser’s Appraisal of the Holding Company’s Common Stock;