SimilarWeb Ltd. Chief Executive Officer filed a Form 4 on August 17, 2026, disclosing the exercise of stock options and the sale of ordinary shares on August 13 and August 14, 2026.

Key Highlights

  • Reporting person: The filing identifies the reporting person as "Offer Or," listed as Chief Executive Officer of SimilarWeb Ltd. (NYSE:SMWB).
  • Options exercised: A total of 563,492 ordinary shares were acquired via the exercise of stock options across two dates, August 13 and August 14, 2026, at exercise prices of $3.04 and $0.40 per share.
  • Shares sold: A total of 809,597 ordinary shares were disposed of across multiple sale transactions on August 13 and August 14, 2026, at weighted average prices ranging from $8.75 to $8.9006 per share.
  • Post-transaction ownership: Following all reported transactions, the reporting person directly beneficially owned 4,598,291 ordinary shares, according to the filing.
  • Remaining derivative securities: After the reported exercises, the filing shows 140,008 options at an exercise price of $3.04 (expiring 01/28/2031) and 739,000 options at an exercise price of $0.40 (expiring 02/14/2028) remaining.
  • Transaction prices: Individual sale transactions ranged from $8.66 to $9.005, with the filing noting weighted average prices and an undertaking to provide per-price detail upon request.

SimilarWeb CEO Reports Option Exercises and Open-Market Share Sales

According to the Form 4 filed on August 17, 2026, the reporting person, identified as "Offer Or" and serving as Chief Executive Officer of SimilarWeb Ltd. (NYSE:SMWB), reported a series of transactions in the company's ordinary shares on August 13 and August 14, 2026. The filing was signed by Meirav Shemesh on behalf of Oppenheimer Israel, as attorney-in-fact.

On August 13, 2026, the filing discloses that 228,500 shares were acquired via option exercise at $3.04 per share and then sold at a weighted average price of $8.8215 (in transactions ranging from $8.66 to $9.005). An additional 200,000 shares were acquired by exercising options at $0.40 per share and sold at a weighted average price of $8.7864 (ranging from $8.69 to $8.88). The filing also reports sales of 106,105 shares at $8.75 and 40,000 shares at $8.90 on the same date.

On August 14, 2026, the reporting person exercised options covering 59,992 shares at $3.04 and sold them at a weighted average of $8.9006 (ranging from $8.90 to $8.92), and exercised options covering 75,000 shares at $0.40 and sold them at a weighted average of $8.852 (ranging from $8.85 to $8.87). The filing notes that all options were exercised and the underlying shares were sold on the same dates as reported. Following all transactions, directly held beneficial ownership stood at 4,598,291 ordinary shares, as disclosed in the filing.

What Was Disclosed

The Form 4 filed August 17, 2026, reports that SimilarWeb Ltd.'s CEO exercised stock options and sold ordinary shares on August 13 and 14, 2026, with post-transaction direct beneficial ownership of 4,598,291 ordinary shares.