Similarweb Names Michael Akkerman CEO From Nov. 2
Similarweb said the CEO appointment brings no change to its strategy, operations or financial outlook.
Rhea-AI Filing Summary
Similarweb Ltd. appointed Michael Akkerman as Chief Executive Officer, effective November 2, 2026. He succeeds Founder and CEO Or Offer, who is stepping down after close to two decades leading the company, as previously announced in May 2026. Akkerman currently serves as Chief Business Officer of Digital Turbine and previously held leadership roles at data.ai, Cardlytics, Uber, Pinterest and Kenshoo.
Offer will remain involved through a transition period, supporting Akkerman and the Board. Similarweb said the appointment does not change its strategy, operations or financial outlook.
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Key Figures
CEO appointment effective date: November 2, 2026
Akkerman leadership experience: Nearly 20 years
Or Offer's time leading Similarweb: Close to two decades
3 metrics
CEO appointment effective date
November 2, 2026
Effective date for Michael Akkerman's appointment
Akkerman leadership experience
Nearly 20 years
C-level and senior operating leadership across digital advertising, data and technology businesses
Or Offer's time leading Similarweb
Close to two decades
As Founder and CEO
Key Terms
go-to-market, C-level, AI-powered data products
3 terms
go-to-market technical
"led all go-to-market functions"
A go-to-market plan is the practical roadmap a company uses to introduce a product or service to customers, covering who the target buyers are, how the product will be sold or distributed, pricing, and the main marketing and sales messages. For investors, it shows how quickly and cost-effectively a business can win customers and generate revenue — like a launch playbook that determines whether a new offering will reach its audience and scale profitably.
C-level technical
"nearly 20 years of C-level and senior operating leadership"
AI-powered data products technical
"scaling its AI-powered data products"
AI-powered data products are software tools or services that use artificial intelligence to gather, clean, analyze and turn raw information into ready-to-use insights, like a smart assistant that reads piles of reports and highlights the trends. Investors care because these products can speed decision-making, reduce human error and create new revenue streams or cost savings; think of them as automated microscopes that reveal patterns a person might miss.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
When does SMWB's new CEO start?
Michael Akkerman is scheduled to become Similarweb's Chief Executive Officer effective November 2, 2026. He currently serves as Chief Business Officer of Digital Turbine and previously served as Chief Revenue Officer of data.ai and Chief Product and Strategy Officer at Cardlytics.
What experience does SMWB's incoming CEO have?
Michael Akkerman has nearly 20 years of C-level and senior operating leadership across digital advertising, data and technology businesses. As Digital Turbine's Chief Business Officer, he leads a global team spanning sales, partnerships, marketing, product and business operations. At data.ai, he led go-to-market functions.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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 September 2026
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 [ ]
Explanatory Note
On September 24, 2026, Similarweb Ltd. (“Similarweb” or the “Company”) announced that its Board of Directors has appointed Michael Akkerman as Chief Executive Officer, effective November 2, 2026. Mr. Akkerman succeeds Founder and CEO Or Offer, who, as previously announced in May 2026, is stepping down after close to two decades leading the Company. The Company issued a press release titled “Similarweb Names Michael Akkerman as New Chief Executive Officer”. A copy of the press release is furnished as Exhibit 99.1 herewith.
Exhibit 99.1 is hereby expressly incorporated by reference into the registrant’s registration statements on Form S-8 filed with the Securities and Exchange Commission on March 2, 2026 (File no. 333-293912), 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 | Similarweb Names Michael Akkerman as New Chief Executive Officer | |||||||
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: September 24, 2026 | By: | /s/ Ran Vered | ||||||||||||||||||||||||
| Ran Vered Chief Financial Officer | ||||||||||||||||||||||||||
Exhibit 99.1
Similarweb Names Michael Akkerman as New Chief Executive Officer
TEL AVIV, Israel — September 24, 2026 — Similarweb Ltd. (NYSE: SMWB), a leading digital data and analytics company, today announced that its Board of Directors has appointed Michael Akkerman as Chief Executive Officer, effective November 2, 2026. Mr. Akkerman succeeds Founder and CEO Or Offer, who, as previously announced in May 2026, is stepping down after close to two decades leading the Company.
Mr. Akkerman brings nearly 20 years of C-level and senior operating leadership across digital advertising, data, and technology businesses. He currently serves as Chief Business Officer of Digital Turbine (NASDAQ: APPS), leading a global team spanning sales, partnerships, marketing, product, and business operations. He previously served as Chief Revenue Officer of data.ai (formerly App Annie), where he led all go-to-market functions - sales, marketing, business development, and corporate strategy - for a platform providing app and market intelligence to many of the same enterprise customers Similarweb serves today.
Earlier, he served as Chief Product and Strategy Officer at Cardlytics (NASDAQ: CDLX), leading product alongside engineering, and held senior commercial leadership roles at both Uber (NYSE: UBER) and Pinterest (NYSE: PINS). Earlier in his career, he held global sales and strategy leadership roles at Kenshoo (now Skai), an Israeli-founded enterprise marketing software company. He holds a degree from the University of New South Wales, Sydney, Australia.
Michael will be based in and lead from Similarweb's New York office.
Or Offer will remain closely involved through a transition period, supporting Mr. Akkerman and the Board to ensure continuity for customers, partners, and employees.
Harel Beit-On, Chairman of the Board of Similarweb, said, “On behalf of the Board, I want to start by thanking Or for his extraordinary leadership since founding the company. He built Similarweb from the ground up into the company it is today, and we are deeply grateful for his vision, his partnership, and the culture he created. As we turn to our next chapter, this appointment is the culmination of a thorough and disciplined search process. Michael brings exactly the combination of data fluency, operating rigor, strategic depth, and multidisciplinary leadership this next phase calls for, and the Board has full confidence in him and in the continuity of Similarweb's bold vision”
Or Offer, Founder and outgoing CEO of Similarweb, said, “I've spent almost 20 years building this company, and I couldn't be prouder of where we stand today - a business that has successfully navigated its transition into the AI era and is well positioned for its next phase of growth. I am proud to hand the reins to someone with Michael's caliber, expertise, and energy. He has the experience and the track record to carry Similarweb forward, and I look forward to supporting him through the transition.”
Michael Akkerman, incoming CEO of Similarweb, said, “Similarweb sits on one of the most valuable data assets in the industry - years of insight into how people navigate the digital world, online and in-app. I've been a customer since early in my career and have seen firsthand how turning this kind of intelligence into action drives meaningful business results.
Exhibit 99.1
I'm humbled by the opportunity to build on the foundation that Or and the team have cemented, right at the inflection point when AI is reshaping how we interact with and measure the digital world, and at exactly the moment when understanding human behavior is at a premium. I'm grateful to Or and the Similarweb Board for their trust, and I couldn't be more excited to keep building the future together.”
The Board conducted an extensive search and was supported by Spencer Stuart, a leading global executive search firm.
Similarweb is focused on scaling its AI-powered data products and accelerating go-to-market execution across new and existing markets. The Board prioritized a CEO who is a proven operator with deep go-to-market, strategic, and commercial leadership experience to lead this next stage of the company’s growth, and Michael's track record scaling data-driven, technology-first businesses across product, partnerships, and commercial functions positions him as the right leader to propel the company forward. There is no change to the Company's strategy, operations, or financial outlook.
About Similarweb
Similarweb powers businesses to win their markets with Digital Data. By providing essential web and app data, analytics, and insights, we empower our users to discover business opportunities, identify competitive threats, optimize strategy, acquire the right customers, and increase monetization. Similarweb products are integrated into users’ workflow, powered by advanced technology, and based on leading comprehensive Digital Data.
Press:
David F. Carr
Similarweb
david.carr@similarweb.com
Investors:
Adam Hotchkiss
VP, Investor Relations
adam.hotchkiss@similarweb.com
Disclaimer: All names, brands, trademarks, and registered trademarks are the property of their respective owners. The data, reports, and other materials provided or made available by Similarweb consist of or include estimated metrics and digital insights generated by Similarweb using its proprietary algorithms, based on information collected by Similarweb from multiple sources using its advanced data methodologies. Similarweb shall not be responsible for the accuracy of such data, reports, and materials and shall have no liability for any decision made or action taken by any third party based in whole or in part on such data, reports, and materials.