X0609 4 2026-10-01 0000755001 UNITIL CORP UTL 0001891939 Kountze Katherine false 6 LIBERTY LANE WEST HAMPTON NH 03842 true false false false false Common stock, no par value 2026-10-01 4 A false 2272 0 A 3896 D Shares were granted pursuant to the Unitil Corporation Third Amended and Restated 2003 Stock Plan and transferred into my name in connection with the stock portion of my annual retainer fee as a Director of the Company. /s/ Thomas P. Meissner, Jr., attorney-in-fact for Katherine Kountze 2026-10-02