Public ownership evidence

Similarweb Ltd. (SMWB) Ownership Disclosures

Read SMWB insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Similarweb Ltd.: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-25
Trade date
2026-09-24
Reporting owners
Offer Or
Code
S
Shares
400
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001976408-26-000866
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read SMWB fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read SMWB fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-09-252026-09-24Offer OrS400Not reported
2026-09-252026-09-24Offer OrS113,900Not reported
2026-09-242026-09-23Offer OrS28,400Not reported
2026-09-242026-09-22Offer OrS34,500Not reported
2026-09-222026-09-21Offer OrS32,200Not reported
2026-09-222026-09-18Offer OrS37,500Not reported
2026-09-182026-09-17Offer OrS30,400Not reported
2026-09-182026-09-16Offer OrS45,719Not reported
2026-09-162026-09-15Offer OrS26,691Not reported
2026-09-162026-09-14Offer OrS52,900Not reported
2026-09-162026-09-15Offer OrS26,691Not reported
2026-09-162026-09-14Offer OrS52,900Not reported
2026-09-162026-09-15Offer OrS26,691Not reported
2026-09-162026-09-14Offer OrS52,900Not reported
2026-09-142026-09-11Offer OrS59,000Not reported
2026-09-142026-09-10Offer OrS59,200Not reported
2026-09-102026-09-09Offer OrS86,300Not reported
2026-09-102026-09-08Offer OrS60,700Not reported
2026-08-282026-08-26Offer OrS140,008Not reported
2026-08-282026-08-26Offer OrS39,000Not reported
2026-08-282026-08-26Offer OrS39,302Not reported
2026-08-282026-08-26Offer OrS164,817Not reported
2026-08-182026-08-14Offer OrS75,000Not reported
2026-08-182026-08-14Offer OrS59,992Not reported
2026-08-182026-08-13Offer OrS40,000Not reported
2026-08-182026-08-13Offer OrS106,105Not reported
2026-08-182026-08-13Offer OrS200,000Not reported
2026-08-182026-08-13Offer OrS228,500Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Lotus Technology Management, LP2026-06-302026-08-15531,409$3,403,907None
Sphera Management Technology Funds Ltd2026-06-302026-08-15615,000$3,769,950None
Quarry LP2026-06-302026-08-15149$913None
Militia Capital Partners, LP2024-12-312026-08-1530,000$425,100None
XTX Topco Ltd2026-06-302026-08-1510,906$66,854None
Qube Research & Technologies Ltd2026-06-302026-08-1531,847$195,222None
OSAIC HOLDINGS, INC.2026-06-302026-08-15300$1,839None
Schonfeld Strategic Advisors LLC2026-06-302026-08-151,210,629$7,421,154None
JANE STREET GROUP, LLC2026-06-302026-08-15317,117$1,943,927None
JANE STREET GROUP, LLC2026-06-302026-08-15196,160$1,202,461None
JANE STREET GROUP, LLC2026-06-302026-08-1588,700$543,731Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15138,417$848,496None
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC2026-06-302026-08-15169,885$1,041,395None
S SQUARED TECHNOLOGY, LLC2026-06-302026-08-151,690,000$10,359,700None
NANO CAP NEW MILLENNIUM GROWTH FUND L P2026-06-302026-08-15650,000$3,984,500None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1518,198$111,554None
Ulysses Management LLC2026-06-302026-08-152,928,474$17,951,546None
LAZARD ASSET MANAGEMENT LLC2026-06-302026-08-1523,566$144,460None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-15100$560None
ION Crossover Partners Ltd2026-06-302026-08-153,030,826$18,578,963None
Cresset Asset Management, LLC2026-06-302026-08-1510,144$62,183None
ROYAL BANK OF CANADA2026-06-302026-08-155,900$36,000None
D. E. Shaw & Co., Inc.2026-06-302026-08-1538,535$236,220None
D. E. Shaw & Co., Inc.2026-06-302026-08-15121,400$744,182None
CITADEL ADVISORS LLC2026-06-302026-08-1514,400$88,272Put
CITADEL ADVISORS LLC2026-06-302026-08-15346,735$2,125,486None
CITADEL ADVISORS LLC2026-06-302026-08-1538,800$237,844Call
ARK Investment Management LLC2026-06-302026-08-15834,663$5,116,484None
PRELUDE CAPITAL MANAGEMENT, LLC2026-06-302026-08-1510,411$63,819None
CDC Financial, Inc.2026-06-302026-08-15674,233$4,133,048None
WELLINGTON MANAGEMENT GROUP LLP2026-06-302026-08-151,133,687$6,949,501None
WELLINGTON MANAGEMENT GROUP LLP2026-06-302026-08-1551,504$315,720None
WELLINGTON MANAGEMENT GROUP LLP2026-06-302026-08-152,439,494$14,954,098None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-15129,851$795,987None
BARCLAYS PLC2026-06-302026-08-15690$4,230None
WELLS FARGO & COMPANY/MN2026-06-302026-08-158,200$50,266None
WELLS FARGO & COMPANY/MN2026-06-302026-08-151,000$6,130None
Pathstone Holdings, LLC2026-06-302026-08-1499,390$609,261None
UBS Group AG2026-06-302026-08-145,128$31,435None
UBS Group AG2026-06-302026-08-14398,200$2,440,966None
Connor, Clark & Lunn Investment Management Ltd.2026-06-302026-08-14445,691$2,732,086None
PEAK6 LLC2026-06-302026-08-14484,822$2,971,959None
PEAK6 LLC2026-06-302026-08-143,000$18,390Call
MARSHALL WACE, LLP2026-06-302026-08-1455,759$341,803None
MARSHALL WACE, LLP2026-06-302026-08-145,222$32,011None
MYDA Advisors LLC2026-06-302026-08-14100,000$613,000None
MENORA MIVTACHIM HOLDINGS LTD.2026-06-302026-08-144,015,494$24,614,978None
Centiva Capital, LP2026-06-302026-08-1445,919$281,483None
ACADIAN ASSET MANAGEMENT LLC2026-06-302026-08-146,750$41,000None
RENAISSANCE TECHNOLOGIES LLC2026-06-302026-08-14713,728$4,375,153None

90-day public filing window, up to 50 source positions.

Lotus Technology Management, LP ↗Sphera Management Technology Funds Ltd ↗Quarry LP ↗Militia Capital Partners, LP ↗XTX Topco Ltd ↗Qube Research & Technologies Ltd ↗OSAIC HOLDINGS, INC. ↗Schonfeld Strategic Advisors LLC ↗JANE STREET GROUP, LLC ↗JANE STREET GROUP, LLC ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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