X0306 4 2018-09-11 0 0001145057 FORESCOUT TECHNOLOGIES, INC FSCT 0001320652 Amadeus Capital Partners LTD C/O AMADEUS CAPITAL, SUITE 1, 2ND FLOOR 2 QUAYSIDE CAMBRIDGE X0 CB5 8AB UNITED KINGDOM 0 0 1 0 0001719661 Amadeus General Partner Ltd C/O AMADEUS CAPITAL, 50 LOTHIAN ROAD FESTIVAL SQUARE EDINBURGH X0 EH3 9WJ UNITED KINGDOM 0 0 1 0 0001719660 Amadeus Capital GP LLP C/O AMADEUS CAPITAL, SUITE 1, 2ND FLOOR 2 QUAYSIDE CAMBRIDGE X0 CB5 8AB UNITED KINGDOM 0 0 1 0 0001719588 Amadeus II General Partner LP C/O AMADEUS CAPITAL, 50 LOTHIAN ROAD FESTIVAL SQUARE EDINBURGH X0 EH3 9WJ UNITED KINGDOM 0 0 1 0 0001719657 Amadeus IV Velocity GP LP C/O AMADEUS CAPITAL, 50 LOTHIAN ROAD FESTIVAL SQUARE EDINBURGH X0 EH3 9WJ UNITED KINGDOM 0 0 1 0 0001719629 Amadeus EI General Partner LP C/O AMADEUS CAPITAL, 50 LOTHIAN ROAD FESTIVAL SQUARE EDINBURGH X0 EH3 9WJ UNITED KINGDOM 0 0 1 0 0001719659 Amadeus EII General Partner LP C/O AMADEUS CAPITAL, 50 LOTHIAN ROAD FESTIVAL SQUARE EDINBURGH X0 X0 UNITED KINGDOM 0 0 1 0 Common Stock 2018-09-11 4 S 0 14177 37.3225 D 1783108 I See footnotes Common Stock 2018-09-11 4 S 0 9452 37.3225 D 1188737 I See footnotes Common Stock 2018-09-11 4 S 0 6616 37.3225 D 832107 I See footnotes Common Stock 2018-09-11 4 S 0 315 37.3225 D 39610 I See footnotes Common Stock 2018-09-11 4 S 0 945 37.3225 D 118844 I See footnotes Common Stock 2018-09-11 4 S 0 3852 37.3225 D 484426 I See footnotes Common Stock 2018-09-11 4 S 0 4381 37.3225 D 25423 I See footnotes Common Stock 2018-09-11 4 S 0 4364 37.3225 D 548869 I See footnotes The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.25 to $37.465, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4. The reported shares are held of record by Amadeus II 'A' ("Amadeus A"). Amadeus II General Partner LP ("Amadeus II GP") is the general partner of Amadeus A. Amadeus General Partner LTD ("Amadeus GP LTD") and Amadeus Capital GP LLP ("Amadeus Capital GP" and, together with Amadeus GP LTD, the "Intermediate General Partners") are the general partners of each of the Direct General Partners (as defined in footnote 12 below). Amadeus Capital Partners Limited ("Amadeus Limited") is the manager of each of the Amadeus Funds (as defined in footnote 12 below) and the Direct General Partners and has sole voting and dispositive power with respect to the shares held by the Amadeus Funds. The directors of Amadeus Limited (the "Amadeus Directors") have delegated their voting and dispositive power with respect to the shares held by each of the Amadeus Funds to a committee comprised of more than three members (the "Amadeus Committee"). Each of the members of the Amadeus Committee share voting and dispositive power with respect to the shares held by the Amadeus Funds. Each of Amadeus Limited, the Direct General Partners, the Intermediate General Partners, the Amadeus Directors and members of the Amadeus Committee disclaim beneficial ownership of these securities and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein. All of the shares of the Issuer held by the Amadeus Funds are subject to a voting agreement (as described in the Issuer's Registration Statement on Form S-1 filed with the United States Securities and Exchange Commission (File No. 333-220767)) pursuant to which the Issuer's Chief Executive Officer holds an irrevocable proxy with, under certain circumstances, voting control over such shares. The reported shares are held of record by Amadeus II 'B' ("Amadeus B"). Amadeus II GP is the general partner of Amadeus B. The reported shares are held of record by Amadeus II 'C' ("Amadeus C"). Amadeus II GP is the general partner of Amadeus C. The reported shares are held of record by Amadeus II 'D' GmbH & Co KG ("Amadeus GmbH"). Amadeus II GP is the general partner of Amadeus GmbH. The reported shares are held of record by Amadeus II Affiliates Fund L.P. ("Affiliates Fund"). Amadeus II GP is the general partner of Affiliates Fund. The reported shares are held of record by Amadeus IV Velocity Fund L.P. ("Velocity Fund"). Amadeus IV Velocity GP LP ("Amadeus Velocity GP") is the general partner of Velocity Fund. The reported shares are held of record by Amadeus EI L.P. ("Amadeus EI"). Amadeus EI General Partner LP ("Amadeus EI GP") is the general partner of Amadeus EI. The reported shares are held of record by Amadeus EII L.P. ("Amadeus EII" and, together with each of Amadeus A, Amadeus B, Amadeus C, Amadeus GmbH, Affiliates Fund, Velocity Fund and Amadeus EI, the "Amadeus Funds"). Amadeus EII General Partner LP ("Amadeus EII GP" and together with each of Amadeus II GP, Amadeus Velocity GP and Amadeus EI GP, the "Direct General Partners") is the general partner of Amadeus EII. This report on Form 4 is the first of two reports relating to the same transactions and is filed to enable all joint filers to gain access to the EDGAR filing system. /s/ Anne Glover, Director of Amadeus Capital Partners LTD 2018-09-13 /s/ Anne Glover, Director of Amadeus General Partner Limited 2018-09-13 /s/ Anne Glover, Director of Amadeus General Partners Limited and Amadeus Capital Partners Limited, Members of Amadeus Capital GP LLP 2018-09-13 /s/ Anne Glover, Director of Amadeus Capital Partners Limited, the Manager of Amadeus II General Partner LP 2018-09-13 /s/ Anne Glover, Director of Amadeus Capital Partners Limited, the Manager of Amadeus IV Velocity GP LP 2018-09-13 /s/ Anne Glover, Director of Amadeus Capital Partners Limited, the Manager of Amadeus EI General Partner LP 2018-09-13 /s/ Anne Glover, Director of Amadeus Capital Partners Limited, the Manager of Amadeus EII General Partner LP 2018-09-13