Key facts
- SMWB - SIMILARWEB LTD. has 10 insiders with reported activity on this page.
- Net insider value flow over the last year: +$813,216.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 10 Insiders of SIMILARWEB LTD.
- Symbol
- SMWB on NYSE
- Location
- Givatayim
Change
- Buy value: $813,216; sell value: $0.
- Net share flow: +221,105.
Research use
- 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.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$813,216.
Buys
$813,216
Shares: 221,105
Insiders: 4
Sells
$0
Shares: 0
Insiders: 0
Net
+$813,216
Shares: +221,105
Insiders: 4
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 221,105 | 0 | $813,216 | $0 | +$813,216 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
SIMILARWEB LTD. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Joshua Alliance | Director | $66,540,785 | Mixed | 13 Apr 2026 | ||
| Moshe Beit On | Director | $42,345,676 | +$291,750 | +0.69% | Filing P/S | 20 May 2026 |
| Or Offer | Chief Executive Officer, Director | $16,665,105 | +$199,586 | +1.2% | Filing P/S | 18 May 2026 |
| Benjamin Seror | Director | $2,368,712 | Mixed | 26 Mar 2026 | ||
| Barak Eilam | Director | $391,075 | +$193,000 | +97% | Filing P/S | 21 May 2026 |
| Joseph del Preto | Director | $278,193 | Mixed | 10 Apr 2026 | ||
| Tamar Rapaport-Dagim | Director | $204,867 | +$128,880 | +170% | Filing P/S | 18 May 2026 |
| Kippster Stephen Bodnar | Director | $78,180 | Mixed | 09 Apr 2026 | ||
| Lisa M. Campbell | Director | $39,090 | 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 first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings 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 |
|---|---|---|---|---|---|---|---|---|
| Viola Growth Management Fund 2 Ltd. |
13D/G
|
Harel Beit-On |
13%
|
10,810,778
|
$82,486,236 | $0 | 31 Dec 2024 | |
| Phoenix Financial Ltd. |
13D/G
13F
|
Company |
2.9%
|
2,502,769
|
$13,264,676 | -$8,853,942 | 18 Feb 2026 | |
| Moshe Beit On |
3/4/5
|
Director |
13%
|
10,885,778
|
$42,345,676 | +$291,750 | 20 May 2026 | |
| Joshua Alliance |
3/4/5
|
Director |
10%
|
8,883,950
|
$66,540,785 | — | 13 Apr 2026 | |
| NASPERS LTD |
13F
|
Company |
13%
|
11,173,265
|
$29,162,222 | — | 31 Mar 2026 | |
| MENORA MIVTACHIM HOLDINGS LTD. |
13F
|
Company |
4.6%
|
4,015,494
|
$10,480,439 | — | 31 Mar 2026 | |
| ION Crossover Partners Ltd |
13F
|
Company |
3.5%
|
3,030,826
|
$7,910,456 | — | 31 Mar 2026 | |
| Ulysses Management LLC |
13F
|
Company |
3.5%
|
2,998,474
|
$7,826,017 | — | 31 Mar 2026 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
3.4%
|
2,966,757
|
$7,743,235 | — | 31 Mar 2026 | |
| S SQUARED TECHNOLOGY, LLC |
13F
|
Company |
1.8%
|
1,600,000
|
$4,176,000 | — | 31 Mar 2026 | |
| CenterBook Partners LP |
13F
|
Company |
1.5%
|
1,325,113
|
$3,458,545 | — | 31 Mar 2026 | |
| Y.D. More Investments Ltd |
13F
|
Company |
1.3%
|
1,151,298
|
$8,338,601 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.95%
|
825,763
|
$2,155,241 | — | 31 Mar 2026 | |
| MIRABELLA FINANCIAL SERVICES LLP |
13F
|
Company |
0.91%
|
792,664
|
$2,068,853 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.85%
|
739,673
|
$1,930,547 | — | 31 Mar 2026 | |
| Alpha Family Trust |
13F
|
Company |
0.76%
|
658,935
|
$2,260,148 | — | 31 Mar 2026 | |
| HERALD INVESTMENT MANAGEMENT Ltd |
13F
|
Company |
0.74%
|
645,465
|
$1,678,209 | — | 31 Mar 2026 | |
| CDC Financial, Inc. |
13F
|
Company |
0.74%
|
639,014
|
$1,667,827 | — | 31 Mar 2026 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.73%
|
638,188
|
$1,665,671 | — | 31 Mar 2026 | |
| Sphera Management Technology Funds Ltd |
13F
|
Company |
0.71%
|
615,000
|
$1,605,150 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.68%
|
591,863
|
$1,544,762 | — | 31 Mar 2026 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.61%
|
533,634
|
$1,392,785 | — | 31 Mar 2026 | |
| P.A.W. CAPITAL CORP |
13F
|
Company |
0.58%
|
500,000
|
$1,305,000 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.55%
|
476,005
|
$1,242,373 | — | 31 Mar 2026 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.48%
|
416,146
|
$1,086,141 | — | 31 Mar 2026 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.47%
|
405,607
|
$1,050,000 | — | 31 Mar 2026 | |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P |
13F
|
Company |
0.45%
|
390,000
|
$1,017,900 | — | 31 Mar 2026 | |
| Penn Capital Management Company, LLC |
13F
|
Company |
0.41%
|
360,366
|
$940,555 | — | 31 Mar 2026 | |
| ARK Investment Management LLC |
13F
|
Company |
0.41%
|
352,070
|
$918,903 | — | 31 Mar 2026 | |
| PEAK6 LLC |
13F
|
Company |
0.37%
|
321,156
|
$838,217 | — | 31 Mar 2026 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.33%
|
289,174
|
$754,743 | — | 31 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.27%
|
231,266
|
$603,604 | — | 31 Mar 2026 | |
| XTX Topco Ltd |
13F
|
Company |
0.26%
|
228,880
|
$597,377 | — | 31 Mar 2026 | |
| Militia Capital Management LLC |
13F
|
Company |
0.25%
|
219,264
|
$572,279 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.23%
|
198,543
|
$518,197 | — | 31 Mar 2026 | |
| Persistent Asset Partners Ltd |
13F
|
Company |
0.21%
|
180,000
|
$469,800 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.2%
|
175,207
|
$434,513 | — | 31 Mar 2026 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.18%
|
152,105
|
$397,000 | — | 31 Mar 2026 | |
| Jump Financial, LLC |
13F
|
Company |
0.17%
|
147,616
|
$385,278 | — | 31 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
0.15%
|
127,504
|
$332,785 | — | 31 Mar 2026 | |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC |
13F
|
Company |
0.14%
|
125,623
|
$327,876 | — | 31 Mar 2026 | |
| Palogic Value Management, L.P. |
13F
|
Company |
0.13%
|
114,000
|
$297,540 | — | 31 Mar 2026 | |
| CITIGROUP INC |
13F
|
Company |
0.13%
|
110,174
|
$287,554 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
0.13%
|
109,396
|
$285,524 | — | 31 Mar 2026 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.12%
|
100,204
|
$261,532 | — | 31 Mar 2026 | |
| Quadrature Capital Ltd |
13F
|
Company |
0.11%
|
94,234
|
$245,951 | — | 31 Mar 2026 | |
| OPPENHEIMER & CO INC |
13F
|
Company |
0.1%
|
91,088
|
$237,740 | — | 31 Mar 2026 | |
| Voleon Capital Management LP |
13F
|
Company |
0.1%
|
88,704
|
$231,517 | — | 31 Mar 2026 | |
| Engineers Gate Manager LP |
13F
|
Company |
0.1%
|
87,418
|
$228,161 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.09%
|
79,076
|
$206,388 | — | 31 Mar 2026 |
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 | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Barak Eilam | SMWB | Ordinary Shares | Purchase | 97.4% | $193,000 | $3.86 | 50,000 | 101,315 | 21 May 2026 | Direct |
| Moshe Beit On | SMWB | Ordinary Shares | Purchase | 0.69% | $291,750 | $3.89 | 75,000 | 10,885,778 | 20 May 2026 | Direct |
| Or Offer | SMWB | Ordinary Shares | Purchase | 1.14% | $189,650 | $3.58 | 53,000 | 4,694,396 | 19 May 2026 | Direct |
| Or Offer | SMWB | Ordinary Shares | Purchase | 0.07% | $9,936 | $3.20 | 3,105 | 4,641,396 | 18 May 2026 | Direct |
| Tamar Rapaport-Dagim | SMWB | Ordinary Shares | Purchase | 169.6% | $128,880 | $3.22 | 40,000 | 63,584 | 18 May 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.