X0306 4 2019-10-01 0 0000755001 UNITIL CORP UTL 0001240990 OSHAUGHNESSY M BRIAN 6 LIBERTY LANE WEST HAMPTON NH 03842 1 0 0 0 Common stock, no par value 16567.536 D Restricted stock units 2019-10-01 4 A 0 1102 63.50 A Common stock 1102 10342 D Includes 60.140 shares of common stock acquired on November 29, 2018, 57.275 shares of common stock acquired on February 28, 2019, 54.310 share of common stock acquired on May 29, 2019, 40.190 shares of common stock acquired on August 29, 2019, in each case resulting from the reinvestment of dividends pursuant to Unitil Corporation's Dividend Reinvestment and Stock Purchase Plan. Each restricted stock unit is equivalent in value to one share of Unitil Corporation's common stock, no par value ("Common Stock"), and represents the right to receive a combination of cash and Common Stock after separation from service on Unitil Corporation's Board of Directors. Each restricted stock unit is fully vested upon grant and is payable 70% in Common Stock and 30% in cash, based upon the closing price of Common Stock on the day prior to settlement. /s/ M. Brian O'Shaughnessy 2019-10-02