F1This Form 3 is being jointly filed by and on behalf of each of the following persons (each, a "Warburg Pincus Reporting Person") in connection with the transition by Cyren Ltd. (the "Issuer") from a foreign private issuer to a domestic issuer, effective January 1, 2019: (i) WP XII Investments B.V., a company incorporated in the Netherlands ("WP XII Investments"); (ii) WP XII Investments Cooperatief U.A., a company incorporated in the Netherlands ("WP XII Investments Cooperatief"); (iii) Warburg Pincus (Callisto) Private Equity XII (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII Callisto"); (iv) Warburg Pincus (Europa) Private Equity XII (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII Europa"); (v) Warburg Pincus (Ganymede) Private Equity XII (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII Ganymede"); (vi) Warburg Pincus Private Equity
F2(Continued from Footnote 1) XII-B (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII-B"); (vii) Warburg Pincus Private Equity XII-D (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII-D"); (viii) Warburg Pincus Private Equity XII-E (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII-E"); (ix) Warburg Pincus XII Partners (Cayman), L.P., a Cayman Islands exempted limited partnership ("Warburg Pincus XII Partners"); (x) WP XII Partners (Cayman), L.P., a Cayman Islands exempted limited partnership ("WP XII Partners", and together with WP XII Callisto, WP XII Europa, WP XII Ganymede, WP XII-B, WP XII-D, WP XII-E and Warburg Pincus XII Partners, the "WP XII Funds");
F3(Continued from Footnote 2) (xi) Warburg Pincus LLC, a New York limited liability company ("WP LLC"); (xii) Warburg Pincus (Cayman) XII, L.P., a Cayman Islands exempted limited partnership ("WP XII Cayman GP"); (xiii) Warburg Pincus (Cayman) XII GP LLC, a Delaware limited liability company ("WP XII Cayman GP LLC"); (xiv) Warburg Pincus Partners II (Cayman), L.P., a Cayman Islands exempted limited partnership ("WPP II Cayman"); (xv) Warburg Pincus (Bermuda) Private Equity GP Ltd., a Bermuda exempted company ("WP Bermuda GP", and, together with WP XII Investments, WP XII Investments Cooperatief, the WP XII Funds, WP LLC, WP XII Cayman GP, WP XII Cayman GP LLC, WPP II Cayman and WP Bermuda GP, the "Warburg Entities"); (xvi) Charles R. Kaye; and (xvii) Joseph P. Landy.
F4WP XII Investments is wholly owned by WP XII Investments Cooperatief, which is wholly owned by the WP XII Funds. WP LLC is the manager of the WP XII Funds and WP XII Cayman GP is the general partner of each of the WP XII Funds. WP XII Cayman GP LLC is the general partner of WP XII Cayman GP. WPP II Cayman is the sole member of WP XII Cayman GP LLC. WP Bermuda GP is the general partner of WPP II Cayman. Charles R. Kaye and Joseph P. Landy are the Co-Chairmen and sole Directors of WP Bermuda GP, and the Managing Members and Co-Chief Executive Officers of WP LLC, and may be deemed to control the Warburg Entities.
F5Reflects 27,586,733 ordinary shares of the Issuer directly held by WP XII Investments.
F6Each of Messrs. Kaye and Landy and each Warburg Entity disclaims beneficial ownership with respect to any ordinary shares of the Issuer, except to the extent of its indirect pecuniary interest in such ordinary shares. Information with respect to each of the Warburg Pincus Reporting Persons is given solely by such Warburg Pincus Reporting Person, and no Warburg Pincus Reporting Person has responsibility for the accuracy or completeness of information supplied by another Warburg Pincus Reporting Person.

Remarks

Due to the limitation on the number of Reporting Persons allowed on Form 3, WP XII Investments Cooperatief and the WP XII Funds are included on a separate Form 3 filed on the date hereof.