X0306 4 2022-10-07 1 0001667161 Randolph Bancorp, Inc. RNDB 0001611211 Messmore Lauren C/O RANDOLPH BANCORP, INC. 2 BATTERYMARCH PARK, SUITE 301 QUINCY MA 02169 0 1 0 0 EVP, CFO and Treasurer Common Stock 2022-10-07 4 J 0 66649 D 0 D Common Stock 2022-10-07 4 J 0 5998 D 0 I Held by IRA Common Stock 2022-10-07 4 J 0 158 D 0 I ESOP Performance Restricted Stock Unit 2022-10-07 4 J 0 2000 D 0 D Stock Options (Right to Buy) 8.78 2022-10-07 4 J 0 11764 D 2030-03-31 Common Stock 11764 0 D Stock Options (Right to Buy) 11.48 2022-10-07 4 J 0 20000 D 2030-08-12 Common Stock 20000 0 D Each share of Issuer common stock, whether vested and unvested, were converted into the right to receive $27.00 in cash pursuant to the Agreement and Plan of Merger by and among Hometown Financial Group, MHC, Hometown Financial Group, Inc., Hometown Financial Acquisition Corp. and the Issuer (the "Merger Agreement"). Reflects transactions not required to be reported pursuant to Section 16 of the Securities Exchange Act of 1934, as amended. Each performance restricted stock unit, which represents a contingent right to receive Issuer common stock, was deemed vested at the target level and became exchangeable for the right to receive $27.00 in cash pursuant to the terms of the Merger Agreement. Each option to purchase Issuer common stock, whether vested or unvested, automatically converted to the right to receive a cash payment equal to (i) the number of shares of Issuer common stock provided for in such option and (ii) the excess, if any, of $27.00 over the exercise price per share of Issuer common stock provided for in such option, which cash payment shall be made without interest and shall be net of all applicable withholding taxes. /s/ Lauren B. Messmore 2022-10-07