X0607 3 2026-03-26 0 0001842731 SIMILARWEB LTD. SMWB 0002116451 Vered Ran true SHLOMO KAPLANSKY 55 PETAH TIKVA L3 4923602 0 1 0 0 Chief Financial Officer Restricted Share Units, each representing one Ordinary Share 100000 D The Reporting Person was granted restricted stock units ("RSUs"), which each represent a contingent right to receive one ordinary share of Similarweb Ltd (the "Company"). The RSUs vest in 25% after one year period & 12 equal installments every quarter afterwards with the first vesting date on 02/15/2027, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date. This Form 3 has been filed after March 18,2026 but prior to April 20,2026 in reliance on the temporary relief made available to the directors and officers of certain foreign private issuers by the Staff of the Securities and Exchange Commission in its no action letter dated March 13,2026. Ran Vered by: Oppenheimer Israel, as Attorney-in-fact 2026-03-26