Or Offer - 26 Mar 2026 Form 3 Insider Report for SIMILARWEB LTD. (SMWB)

Role
Chief Executive Officer
Signature
Or Offer by: Oppenheimer Israel, as Attorney-in-fact
Issuer symbol
SMWB
Transactions as of
26 Mar 2026
Net transactions value
$0
Form type
3
Filing time
26 Mar 2026, 08:28:22 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Offer Or Chief Executive Officer 87 HAZOREA ST., KFAR SHMARYAHU Or Offer by: Oppenheimer Israel, as Attorney-in-fact 26 Mar 2026 0001910424

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding SMWB Ordinary shares 3,647,291 26 Mar 2026 Direct
holding SMWB Restricted Share Units, each representing one Ordinary Share 47,500 26 Mar 2026 Direct F1
holding SMWB Restricted Share Units, each representing one Ordinary Share 47,500 26 Mar 2026 Direct F2
holding SMWB Restricted Share Units, each representing one Ordinary Share 98,000 26 Mar 2026 Direct F3
holding SMWB Restricted Share Units, each representing one Ordinary Share 98,000 26 Mar 2026 Direct F4
holding SMWB Restricted Share Units, each representing one Ordinary Share 150,000 26 Mar 2026 Direct F5
holding SMWB Restricted Share Units, each representing one Ordinary Share 150,000 26 Mar 2026 Direct F6
holding SMWB Restricted Share Units, each representing one Ordinary Share 200,000 26 Mar 2026 Direct F7
holding SMWB Restricted Share Units, each representing one Ordinary Share 200,000 26 Mar 2026 Direct F8

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding SMWB Options to purchase one Ordinary Share 26 Mar 2026 Ordinary shares, par value NIS 0.01 per share 1,014,000 $0.4000 Direct F9
holding SMWB Options to purchase one Ordinary Share 26 Mar 2026 Ordinary shares, par value NIS 0.01 per share 439,302 $2.71 Direct F9
holding SMWB Options to purchase one Ordinary Share 26 Mar 2026 Ordinary shares, par value NIS 0.01 per share 564,817 $2.71 Direct F9
holding SMWB Options to purchase one Ordinary Share 26 Mar 2026 Ordinary shares, par value NIS 0.01 per share 428,500 $3.04 Direct F9
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 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 02/15/2024, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F2 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 02/15/2024, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F3 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 02/15/2025, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F4 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 02/15/2025, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F5 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 02/15/2026, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F6 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 02/15/2026, subject to the Reporting Person's continued service to the Company or its subsidiaries through each vesting date.
F7 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.
F8 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.
F9 The Options are fully vested & immediately exercisable.

Remarks:

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.