Or Offer - 24 Sep 2026 Form 4 Insider Report for SIMILARWEB LTD. (SMWB)

Reporting relationship: Chief Executive Officer
Issuer ticker: SMWB
Reported as of: 24 Sep 2026
Net transaction value: -$879,102
SEC form: 4
Accepted by SEC: 25 Sep 2026, 07:46:55 UTC
Prior SEC filing: 24 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Meirav Shemesh on behalf of Oppenheimer Israel, as Attorney-in-fact

Key filing fact

Or Offer filed Form 4 for SIMILARWEB LTD. (SMWB) on 25 Sep 2026.

Key facts

This page summarizes Or Offer's Form 4 filing for SIMILARWEB LTD. (SMWB).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 25 Sep 2026, 07:46.

Change

Previous filing in this sequence was filed on 24 Sep 2026.
Current net transaction value: -$879,102.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001910424 Primary reporting owner

Offer Or

Relationship: Chief Executive Officer
Address: 87 HAZOREA ST., KFAR SHMARYAHU, ISRAEL
Signature: /s/ Meirav Shemesh on behalf of Oppenheimer Israel, as Attorney-in-fact
Signature date: 25 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SMWB transaction

Ordinary Shares

Sale

Transaction value: $875,754
Shares: -113,900
Change %: -2.8%
Price: $7.69
Shares after: 3,930,881
Date: 24 Sep 2026
Ownership: Direct
Footnotes: F1, F2

SMWB transaction

Ordinary Shares

Sale

Transaction value: $3,348
Shares: -400
Change %: -0.01%
Price: $8.37
Shares after: 3,930,481
Date: 24 Sep 2026
Ownership: Direct
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

The sale reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 1st, 2026

Footnote F2

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $7.33 to $8.305. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request

Footnote F3

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.355 to $8.41. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request