X0306 4 2018-03-23 1 0001145057 FORESCOUT TECHNOLOGIES, INC FSCT 0001299074 Meritech Management Associates II L.L.C. 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001299073 Meritech Capital Associates II L.L.C. 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001119133 MERITECH CAPITAL PARTNERS II LP 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001255154 MERITECH CAPITAL AFFILIATES II LP 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001130610 MCP ENTREPRENEUR PARTNERS II LP 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001255151 MADERA PAUL S 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 0001255152 GORDON MICHAEL B 245 LYTTON AVE., SUITE 125 PALO ALTO CA 94301 0 0 1 0 Common Stock 2018-03-23 4 S 0 981384 27.637 D 3049486 I See footnote Common Stock 2018-03-23 4 S 0 25252 27.637 D 78354 I See footnote Common Stock 2018-03-23 4 S 0 7504 27.637 D 23315 I See footnote The Reporting Persons sold shares to the underwriters in connection with the closing of the Issuer's follow-on public offering. The reported sale price reflects the price at which the Reporting Person sold shares to the underwriters, which is net of underwriting commissions. The shares are held of record by Meritech Capital Partners II L.P. ("MCP II"). Paul S. Madera and Michael B. Gordon, as the managing members of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of MCP II, share voting and dispositive power with respect to the shares held by MCP II. Such persons and entities disclaim beneficial ownership of the securities held by MCP II except to the extent of any pecuniary interest therein. The shares are held of record by Meritech Capital Affiliates II L.P. ("MCA II"). Messrs. Madera and Gordon, as the managing members of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of MCA II, share voting and dispositive power with respect to the shares held by MCA II. Such persons and entities disclaim beneficial ownership of the securities held by MCA II except to the extent of any pecuniary interest therein. The shares are held of record by MCP Entrepreneur Partners II L.P. ("Entrepreneur"). Messrs. Madera and Gordon, as the managing members of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of Entrepreneur, share voting and dispositive power with respect to the shares held by Entrepreneur. Such persons and entities disclaim beneficial ownership of the securities held by Entrepreneur except to the extent of any pecuniary interest therein. /s/ Paul S. Madera, as a managing member of Meritech Management Associates II L.L.C 2018-03-27 /s/ Paul S. Madera, as a managing member of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C 2018-03-27 /s/ Paul S. Madera, as a managing member of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of Meritech Capital Partners II L.P. 2018-03-27 /s/ Paul S. Madera, as a managing member of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of Meritech Capital Affiliates II L.P. 2018-03-27 /s/ Paul S. Madera, as a managing member of Meritech Management Associates II L.L.C., a managing member of Meritech Capital Associates II L.L.C., the general partner of MCP Entrepreneur Partners II L.P. 2018-03-27 /s/ Paul S. Madera 2018-03-27 /s/ Michael B. Gordon 2018-03-27