X0306 4 2018-06-04 0 0001655075 Armstrong Flooring, Inc. AFI 0001209306 JOHNSTON MICHAEL F C/O ARMSTRONG FLOORING, INC. 2500 COLUMBIA AVENUE, P.O. BOX 3025 LANCASTER PA 17603 1 0 0 0 Common Stock 2018-06-04 4 A 0 7894 0.00 A 89197 D Restricted stock units granted under the Issuer's 2016 Directors Stock Unit Plan and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service. Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 4, 2018, the first business day following the annual stockholders meeting, which price was $13.30. Includes units that have vested but are not yet acquirable until the Director's separation from service which were granted under the director compensation program of Armstrong World Industries, Inc. ("AWI") prior to the Issuer's separation from AWI ("AWI Units"). The AWI Units are vested but are not acquirable by the Director (x) for AWI Units granted prior to June 2011, six (6) months following separation from service and (y) for AWI Units granted during and after June 2011, at the time of separation from service. Also includes vested and unvested units granted under the terms of the Issuer's 2016 Directors Stock Unit Plan. Vested units under the Plan are not acquirable by the Director until, at the election of the Director: (i) the next annual stockholders meeting or (ii) the time of the Director's separation from service. /s/ Christopher S. Parisi, Attorney-in-Fact 2018-06-06