TION BERKSHIRE HATHAWAY INC DEL CL A UNSOL AVERAGE UNIT PRICE TRANSACTION YOUR BROKER ACTED AS AGENT DFB HEALTHCARE ACOUISTIONSCORP UNIT 1COM 8 13 W TS EXP 2023 UNSOLICITED ORDER DFB HEALTHCARE ACOUISITIONSCORP UNIT 100M 8 13 W TS EXP 2023 PROSPECTUS UNDER SEPARATE COVER DOMINION ENERGY M IDSTREA