UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT UNDER SECTION 13 OF 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OF 15(d) OF THE SECURITIES EXCHANGE ACT Commission File Number: 0-25165 GREENE COUNTY BANCORP, INC. (Exact Name of Registrant as Specified in its Charter) United States 14-1809721 (State or other jurisdiction of incorpo ration or organization) (I.R.S ...