SMWB 6-K: Exhibit 99.1 and Shareholder Letter Filed Ahead of Q2 Call

Rhea-AI Filing Summary

Similarweb Ltd. disclosed it will hold a conference call on August 13, 2025 to discuss its financial results for the second quarter ended June 30, 2025. The Form 6-K furnishes a press release as Exhibit 99.1 and a shareholder letter as Exhibit 99.2.

The company states that Exhibit 99.1, except for the portions captioned "Financial Outlook", is incorporated by reference into its registration statements on Form S-8 and Form F-3. This report does not include the company’s financial statements or operating metrics within the Form 6-K itself.

Insights

Financial Analyst

TL;DR: Routine disclosure: a Q2 results call is scheduled and exhibits are furnished; no financial metrics are reported in this filing.

This Form 6-K communicates logistics and supporting documents rather than new operating data. The material action is the scheduling of an investor call to present second-quarter results and the furnishing of a press release and shareholder letter. Because the filing itself contains no revenue, earnings, guidance, or balance sheet figures, its immediate market impact is likely limited until the press release or call provides substantive results.

Corporate Governance Expert

TL;DR: Administrative disclosure: Exhibit 99.1 is furnished and selectively incorporated by reference; governance/filing housekeeping is the primary purpose.

The filing clarifies that the press release is incorporated by reference into the company’s Form S-8 and Form F-3 registration statements, except for the Financial Outlook portion. This is a procedural step that aligns exhibit disclosures with existing registration statements and preserves selective incorporation boundaries. It does not introduce new governance changes or executive actions within the text provided.

FORM 6-K

___________________________

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________

REPORT OF FOREIGN ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2025

Commission File Number: 001-40394

___________________________

Similarweb Ltd.

(Translation of registrant’s name into English)

___________________________

33 Yitzhak Rabin Rd.,

Givatayim 5348303, Israel

(Address of principal executive offices)

___________________________

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [ X ] Form 40-F [ ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [ ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [ ]

EXHIBIT INDEX

On August 13, 2025, Similarweb Ltd. will hold a conference call regarding its financial results for the second quarter ended June 30, 2025. A copy of the related press release is furnished as Exhibit 99.1 hereto.

Exhibit 99.1, other than the portions of Exhibit 99.1 under the caption "Financial Outlook", is hereby expressly incorporated by reference into the registrant’s registration statements on Form S-8 filed with the Securities and Exchange Commission on February 27, 2025 (File no. 333-285314), February 28, 2024 (File no. 333-277449), on March 23, 2023 (File no. 333-270793), on April 15, 2022 (File no. 333-264307) and on May 20, 2021 (File No. 333-256324) and registration statement on Form F-3 filed with the Securities and Exchange Commission on May 10, 2024 (File no. 333-279295).

Exhibit No.						Description
99.1						Press Release of Similarweb Ltd., dated August 12, 2025
99.2						Shareholder letter, dated August 12, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			Similarweb Ltd.
Date: August 12, 2025			By:			/s/ Jason Schwartz
						Jason Schwartz Chief Financial Officer

FAQ

When is Similarweb (SMWB) holding its conference call for Q2 2025?

August 13, 2025, to discuss financial results for the quarter ended June 30, 2025.

What exhibits were furnished with Similarweb's Form 6-K?

Exhibit 99.1 (press release) and Exhibit 99.2 (shareholder letter) were furnished with the Form 6-K.

Is the press release incorporated by reference into any registration statements?

Yes. The press release (Exhibit 99.1), except for the portions captioned "Financial Outlook", is incorporated by reference into the company's registration statements on Form S-8 and Form F-3.

Does this Form 6-K include Similarweb's Q2 financial results or metrics?

No. The Form 6-K furnishes a press release and shareholder letter but does not itself include financial statements or operating metrics.

Was any financial outlook or guidance incorporated into the registration statements?

No. The filing explicitly excludes the portions of Exhibit 99.1 under the caption "Financial Outlook" from incorporation by reference.