Similarweb affiliated holder plans 134,992-share sale

Similarweb Ltd. filed a notice of proposed sale of ordinary shares by an affiliated holder.

Rhea-AI Filing Summary

Similarweb Ltd. filed a notice of proposed sale of ordinary shares by an affiliated holder. The filing lists a planned sale of 134,992 ordinary shares through Oppenheimer & Co. Inc., with an aggregate market value of $1,216,277.92. Ordinary shares outstanding were 86,962,202 as of the notice date; this is a baseline figure, not the amount being sold. The shares to be sold were originally acquired upon exercise of employee stock options in 2014 and 2021. Over the prior three months, the same holder sold 574,605 ordinary shares for $5,057,419.85.

Key Figures

Proposed shares to be sold: 134,992 shares Aggregate market value of proposed sale: $1,216,277.92 Shares outstanding: 86,962,202 shares +5 more

8 metrics

Proposed shares to be sold 134,992 shares Ordinary shares covered by the resale notice through Oppenheimer & Co. Inc.

Aggregate market value of proposed sale $1,216,277.92 Market value associated with the 134,992 ordinary shares proposed for sale

Shares outstanding 86,962,202 shares Ordinary shares outstanding as of the notice date

Shares sold in past 3 months 574,605 shares Ordinary shares sold by the same holder during the prior three months

Value of shares sold in past 3 months $5,057,419.85 Total consideration for 574,605 ordinary shares sold in the prior three months

Option exercise 2014 75,000 shares Ordinary shares acquired on 02/14/2014 from exercise of employee stock options

Option exercise 2021 59,992 shares Ordinary shares acquired on 01/29/2021 from exercise of employee stock options

Intended sale date 08/14/2026 Date associated with the proposed sale of 134,992 ordinary shares

Key Terms

employee stock options, Ordinary shares, aggregate market value

3 terms

employee stock options financial

"Shares acquired upon exercise of employee stock options"

Employee stock options are contracts that give workers the right to buy a company's shares at a set price sometime in the future, like a coupon that lets you purchase stock at today’s price later on. Investors care because they align employees’ incentives with company performance and create a potential future claim on shares that can reduce existing owners’ percentage and add to a company’s reported compensation costs.

Ordinary shares financial

"Ordinary shares | Oppenheimer & Co. Inc. 85 Broad St."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

aggregate market value financial

"134992 | 1216277.92 | 86962202"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Similarweb (SMWB) disclose in this Form 144 notice?

Similarweb Ltd. discloses a proposed sale of 134,992 ordinary shares by an affiliated holder through Oppenheimer & Co. Inc., along with prior three-month sales of 574,605 shares totaling $5,057,419.85, under securities resale reporting requirements.

How many Similarweb (SMWB) shares are proposed to be sold in this filing?

The filing lists a proposed sale of 134,992 ordinary shares of Similarweb Ltd. These shares are to be sold through Oppenheimer & Co. Inc., with the aggregate market value for the proposed sale shown as $1,216,277.92 at the time of the notice.

How many Similarweb (SMWB) shares are outstanding according to this document?

The document states that Similarweb Ltd. has 86,962,202 ordinary shares outstanding as of the notice date. This figure provides context for the company’s equity base and is separate from the 134,992 shares covered by the proposed sale.

What prior sales of Similarweb (SMWB) shares are reported in the past three months?

The affiliated holder reports selling 574,605 ordinary shares of Similarweb Ltd. during the past three months, for total consideration of $5,057,419.85. These transactions are listed as prior sales in addition to the newly proposed 134,992-share sale.

How were the Similarweb (SMWB) shares in this Form 144 originally acquired?

The ordinary shares covered by the proposed sale were acquired through cash payment upon exercise of employee stock options. The filing specifies option exercises on 02/14/2014 for 75,000 shares and on 01/29/2021 for 59,992 shares.

Which broker is listed for the proposed Similarweb (SMWB) share sale?

The proposed sale of 134,992 ordinary shares of Similarweb Ltd. is listed through Oppenheimer & Co. Inc., located at 85 Broad St., New York, NY 10004. The filing associates this broker with the execution of the proposed resale transaction.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/17/2026 - 07:43 AM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001910424
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SIMILARWEB LTD.
SEC File Number	001-40394
Address of Issuer	33 Yitzhak Rabin Rd. Givatayim ISRAEL 5348303
Phone	972 (73) 320-4086
Name of Person for Whose Account the Securities are To Be Sold	Or Offer
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Ordinary shares	Oppenheimer & Co. Inc. 85 Broad St. New York NY 10004	134992	1216277.92	86962202	08/14/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Ordinary shares	02/14/2014	Shares acquired upon exercise of employee stock options	SIMILARWEB LTD.			75000	02/14/2014	Cash payment upon exercise of stock options
Ordinary shares	01/29/2021	Shares acquired upon exercise of employee stock options	SIMILARWEB LTD.			59992	01/29/2021	Cash payment upon exercise of stock options

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Or Offer 33 Yitzhak Rabin Rd. Givatayim L3 5348303	Ordinary shares	08/13/2026	574605	5057419.85

144: Remarks and Signature

Remarks
Date of Notice	08/14/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Or Offer By: /s/ Yohanan Azriel Title: Authorized Signatory, Oppenheimer Israel (pursuant to delegation)
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)