75,000-share open-market buy at Similarweb (NYSE: SMWB) by director

Filing Impact

(Moderate)

Filing Sentiment

(Positive)

Form Type

Rhea-AI Filing Summary

SIMILARWEB LTD. director Beit-On Harel Moshe reported an open-market purchase of 75,000 Ordinary Shares on May 20, 2026. The shares were bought at a weighted average price of $3.89 per share, and his direct holdings increased to 10,885,778 Ordinary Shares. The price represents an average across multiple trade executions, as noted in the filing.

Insider Trade Summary

Net Buyer: 75,000 shares ($291,750)

Net Buy 1 txn

Insider Beit-On Harel Moshe

Role null

Bought 75,000 shs ($292K)

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares	75,000	$3.89	$292K

Holdings After Transaction: Ordinary Shares — 10,885,778 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares purchased: 75,000 shares Purchase price: $3.89 per share Shares held after transaction: 10,885,778 shares +1 more

4 metrics

Shares purchased 75,000 shares Open-market purchase on May 20, 2026

Purchase price $3.89 per share Weighted average price for the transaction

Shares held after transaction 10,885,778 shares Director’s direct Ordinary Share holdings post-trade

Net buy shares 75,000 shares Net effect of reported Form 4 transactions

Key Terms

Ordinary Shares, open-market purchase, weighted average price, Form 4

4 terms

Ordinary Shares financial

"security_title: "Ordinary Shares""

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.

open-market purchase financial

"transaction_action: "open-market purchase""

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

weighted average price financial

"The price reported is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

05/21/2026 - 06:17 AM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Beit-On Harel Moshe

(Last)

(First)

(Middle)

2 LEONARDO DA VINCI ST.

LANDMARK TOWER, 32ND FLOOR

(Street)

TEL AVIV

6473309

(City)

(State)

(Zip)

ISRAEL

(Country)

2. Issuer Name and Ticker or Trading Symbol
SIMILARWEB LTD. [ SMWB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Ordinary Shares	05/20/2026		P		75,000	A	$3.89⁽¹⁾	10,885,778	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The price reported is a weighted average price. The reporting person undertakes to provide full information, regarding the number of shares and prices at which the transaction was effectuated, upon request.

	Harel Moshe Beit-On by: Oppenheimer Israel, as Attorney-in-fact	05/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Similarweb (SMWB) report in this Form 4?

Similarweb reported that director Beit-On Harel Moshe made an open-market purchase of 75,000 Ordinary Shares. The transaction took place on May 20, 2026, and was reported as a routine insider buy in the company’s Ordinary Shares.

How many Similarweb (SMWB) shares did the director buy and at what price?

The director purchased 75,000 Ordinary Shares of Similarweb at a weighted average price of $3.89 per share. The filing notes that this price reflects multiple trade executions aggregated into one average figure for reporting purposes.

What are Beit-On Harel Moshe’s holdings in Similarweb (SMWB) after this trade?

Following the transaction, Beit-On Harel Moshe directly holds 10,885,778 Ordinary Shares of Similarweb. This post-transaction figure includes the newly acquired 75,000 shares and represents his direct ownership position as reported in the Form 4 filing.

Was the Similarweb (SMWB) insider trade an open-market purchase or another type?

The transaction was an open-market purchase of Ordinary Shares, coded as “P” in the filing. This indicates the director bought shares on the market or in a private transaction, rather than receiving them as compensation or through option exercises.

What does the weighted average price mean in the Similarweb (SMWB) Form 4?

The weighted average price of $3.89 per share means the 75,000 shares were bought in multiple trades at different prices. The filing states this average and notes that detailed trade-by-trade pricing is available from the reporting person upon request.