Insider Transactions Reported by 10 Insiders of SIMILARWEB LTD.

Symbol: SMWB on NYSE
Location: Givatayim

Quick Takeaways

SMWB - SIMILARWEB LTD. has 10 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are available for direct filing-level review.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 03 May 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

SIMILARWEB LTD. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Valuation	Report Date
Moshe Beit On	Director	$80,972,727	Mixed	10 Apr 2026
Joshua Alliance	Director	$66,540,785	Mixed	13 Apr 2026
Or Offer	Chief Executive Officer	$27,318,209	Mixed	26 Mar 2026
Benjamin Seror	Director	$2,368,712	Mixed	26 Mar 2026
Joseph del Preto	Director	$278,193	Mixed	10 Apr 2026
Kippster Stephen Bodnar	Director	$78,180	Mixed	09 Apr 2026
Barak Eilam	Director	$78,180	Mixed	26 Mar 2026
Lisa M. Campbell	Director	$39,090	Mixed	26 Mar 2026
Tamar Rapaport-Dagim	Director		Mixed	26 Mar 2026
Ran Vered	Chief Financial Officer		Mixed	26 Mar 2026

Top shareholders of SIMILARWEB LTD. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
NASPERS LTD	13F	Company	13%	11,173,265	$83,687,755	—	31 Dec 2025	13F
Viola Growth Management Fund 2 Ltd.	13D/G	Harel Beit-On	13%	10,810,778	$82,486,236	$0	31 Dec 2024	13D/G
Moshe Beit On	3/4/5	Director	12%	10,810,778	$80,972,727	—	10 Apr 2026	3/4/5
Joshua Alliance	3/4/5	Director	10%	8,883,950	$66,540,785	—	13 Apr 2026	3/4/5
Phoenix Financial Ltd.	13F 13D/G	Company	2.9% from 13D/G	4,285,786	$32,100,537	—	31 Dec 2025	13F 13D/G
MENORA MIVTACHIM HOLDINGS LTD.	13F	Company	4.6%	4,015,494	$30,076,050	—	31 Dec 2025	13F
Or Offer	3/4/5	Chief Executive Officer	— mixed-class rows	3,847,291 mixed-class rows	$27,318,209	—	26 Mar 2026	3/4/5
Migdal Insurance & Financial Holdings Ltd.	13F	Company	3.6%	3,106,157	$23,265,000	—	31 Dec 2025	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	3.5%	3,001,433	$22,480,733	—	31 Dec 2025	13F
Ulysses Management LLC	13F	Company	3.5%	2,998,474	$22,458,570	—	31 Dec 2025	13F
Penn Capital Management Company, LLC	13F	Company	1.8%	1,588,680	$11,909,417	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	1.7%	1,520,398	$11,387,781	—	31 Dec 2025	13F
Y.D. More Investments Ltd	13F	Company	1.3%	1,171,298	$8,371,560	—	31 Dec 2025	13F
BlackRock, Inc.	13F	Company	1.1%	976,514	$7,314,091	—	31 Dec 2025	13F
CenterBook Partners LP	13F	Company	1.1%	960,996	$7,197,860	—	31 Dec 2025	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.98%	852,915	$6,388,333	—	31 Dec 2025	13F
Connor, Clark & Lunn Investment Management Ltd.	13F	Company	0.92%	799,222	$5,986,173	—	31 Dec 2025	13F
S Squared Technology, LLC	13F	Company	0.89%	775,161	$5,805,956	—	31 Dec 2025	13F
Alpha Family Trust	13F	Company	0.76%	658,935	$4,935,424	—	31 Dec 2025	13F
HERALD INVESTMENT MANAGEMENT Ltd	13F	Company	0.74%	645,465	$4,853,897	—	31 Dec 2025	13F
First Eagle Investment Management, LLC	13F	Company	0.74%	645,647	$4,835,896	—	31 Dec 2025	13F
ROYCE & ASSOCIATES LP	13F	Company	0.62%	537,406	$4,025,171	—	31 Dec 2025	13F
UBS Group AG	13F	Company	0.62%	536,549	$4,018,752	—	31 Dec 2025	13F
Portolan Capital Management, LLC	13F	Company	0.57%	492,861	$3,691,529	—	31 Dec 2025	13F
Sphera Management Technology Funds Ltd	13F	Company	0.55%	480,000	$3,595,200	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	0.43%	370,001	$2,771,307	—	31 Dec 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.42%	361,473	$2,707,433	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.41%	357,807	$2,679,974	—	31 Dec 2025	13F
Benjamin Seror	3/4/5	Director	— mixed-class rows	396,250 mixed-class rows	$2,368,712	—	26 Mar 2026	3/4/5
MARSHALL WACE, LLP	13F	Company	0.34%	292,483	$2,190,698	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	0.3%	256,660	$1,922,384	—	31 Dec 2025	13F
P.A.W. CAPITAL CORP	13F	Company	0.28%	240,000	$1,797,600	—	31 Dec 2025	13F
ARK Investment Management LLC	13F	Company	0.27%	236,425	$1,770,823	—	31 Dec 2025	13F
CITADEL ADVISORS LLC	13F	Company	0.23%	200,114	$1,498,854	—	31 Dec 2025	13F
JANE STREET GROUP, LLC	13F	Company	0.21%	186,208	$1,394,698	—	31 Dec 2025	13F
Persistent Asset Partners Ltd	13F	Company	0.21%	180,000	$1,348,200	—	31 Dec 2025	13F
NANO CAP NEW MILLENNIUM GROWTH FUND L P	13F	Company	0.19%	167,500	$1,254,575	—	31 Dec 2025	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	0.18%	158,411	$1,177,000	—	31 Dec 2025	13F
Russell Investments Group, Ltd.	13F	Company	0.17%	148,339	$1,111,062	—	31 Dec 2025	13F
GROUP ONE TRADING LLC	13F	Company	0.17%	147,063	$1,101,502	—	31 Dec 2025	13F
CDC Financial, Inc.	13F	Company	0.16%	141,723	$1,061,505	—	31 Dec 2025	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.16%	138,422	$1,036,781	—	31 Dec 2025	13F
Numerai GP LLC	13F	Company	0.14%	117,949	$883,438	—	31 Dec 2025	13F
Trexquant Investment LP	13F	Company	0.12%	108,038	$809,205	—	31 Dec 2025	13F
OPPENHEIMER & CO INC	13F	Company	0.1%	89,390	$669,531	—	31 Dec 2025	13F
Point72 Asset Management, L.P.	13F	Company	0.1%	89,149	$667,726	—	31 Dec 2025	13F
Swiss National Bank	13F	Company	0.1%	87,474	$655,180	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.09%	80,549	$603,312	—	31 Dec 2025	13F
SEI INVESTMENTS CO	13F	Company	0.09%	76,702	$574,498	—	31 Dec 2025	13F
BLAIR WILLIAM & CO/IL	13F	Company	0.08%	71,044	$532,120	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for SIMILARWEB LTD.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Shares Owned	Date	Ownership
Joshua Alliance	SMWB	Ordinary Shares	8,883,950	13 Apr 2026	Direct
Moshe Beit On	SMWB	Ordinary Shares	10,810,778	10 Apr 2026	Direct
Joseph del Preto	SMWB	Ordinary Shares	37,142	10 Apr 2026	Direct
Joseph del Preto	SMWB	Restricted Share Units, each representing one Ordinary Share	20,000	10 Apr 2026	Direct
Kippster Stephen Bodnar	SMWB	Ordinary Shares	10,438	09 Apr 2026	Direct
Kippster Stephen Bodnar	SMWB	Restricted Share Units, each representing one Ordinary Share	20,000	09 Apr 2026	Direct
Kippster Stephen Bodnar	SMWB	Restricted Share Units, each representing one Ordinary Share	10,439	09 Apr 2026	Direct
Benjamin Seror	SMWB	Restricted Share Units, each representing one Ordinary Share	80,000	26 Mar 2026	Direct
Benjamin Seror	SMWB	Restricted Share Units, each representing one Ordinary Share	60,000	26 Mar 2026	Direct
Benjamin Seror	SMWB	Restricted Share Units, each representing one Ordinary Share	40,000	26 Mar 2026	Direct
Benjamin Seror	SMWB	Restricted Share Units, each representing one Ordinary Share	18,750	26 Mar 2026	Direct
Benjamin Seror	SMWB	Ordinary Shares	316,250	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	200,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	200,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	150,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	150,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	98,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	98,000	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	47,500	26 Mar 2026	Direct
Or Offer	SMWB	Restricted Share Units, each representing one Ordinary Share	47,500	26 Mar 2026	Direct
Or Offer	SMWB	Ordinary shares	3,647,291	26 Mar 2026	Direct
Tamar Rapaport-Dagim	SMWB	Restricted Share Units, each representing one Ordinary Share	23,584	26 Mar 2026	Direct
Lisa M. Campbell	SMWB	Ordinary Shares	5,219	26 Mar 2026	Direct
Lisa M. Campbell	SMWB	Restricted Share Units, each representing one Ordinary Share	20,877	26 Mar 2026	Direct
Barak Eilam	SMWB	Ordinary Shares	10,438	26 Mar 2026	Direct
Barak Eilam	SMWB	Restricted Share Units, each representing one Ordinary Share	20,000	26 Mar 2026	Direct
Barak Eilam	SMWB	Restricted Share Units, each representing one Ordinary Share	20,877	26 Mar 2026	Direct
Ran Vered	SMWB	Restricted Share Units, each representing one Ordinary Share	100,000	26 Mar 2026	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.