Reporting owner · CIK 0001910424

Offer Or

SEC Form 4 history across 1 companies, 42 transactions and 10 filings.

CEOChief Executive OfficerSIMILARWEB LTD.
Open-market transaction mix0% buys0 buys · 26 sales
Latest filingSep 25, 2026, 11:46 AM

Available history · Aug 13, 2026 – Sep 24, 2026

Filings10Form 4 records
Buying$00 purchases
Selling$16M26 sales
Net value−$16MBuys minus sells · disclosed values

Latest insider transactions

Form 4 filings from available history.
Offer Or transactions · 20 per page
CompanyInsiderActivityDisclosed valueFiled (ET)
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$3.34kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$875kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$270kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$309kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$253kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$383kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedAmended filingSEC filing ↗-$227kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedAmended filingSEC filing ↗-$451kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$227kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$451kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$227kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$451kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$474kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$477kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$695kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOS · sale10b5-1 detectedSEC filing ↗-$505kView disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOM · exerciseDerivative securitySEC filing ↗$0View disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOM · exerciseDerivative securitySEC filing ↗$0View disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOM · exerciseDerivative securitySEC filing ↗$0View disclosure →
SMWBSIMILARWEB LTD.
Offer OrCEOM · exerciseDerivative securitySEC filing ↗$0View disclosure →
Open a transaction for shares, transaction date, ownership and the original SEC filing.

Latest Form 4 facts

Quick context from source filings

Latest open-market transaction

sale at SIMILARWEB LTD. on Sep 24, 2026 valued at $3,348.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Monthly open-market activity

Last 2 reported months · purchases and sales

View exact monthly values
MonthPurchasesSalesBuy valueSale valueNet value
Aug 2026010$0.00$9,704,917.48-$9,704,917.48
Sep 2026016$0.00$6,287,498.01-$6,287,498.01

Net value is disclosed purchases minus sales, not profit. A dash means the value is unavailable.

Ownership and transaction size

Ownership and ticket size

Average P/S size$615.1K
Median P/S size$451.6K
Direct42
Indirect0
Sep 24, 2026sale

Filing-only signals

Deterministic matches in this insider's history

Derivative Transactionfiling-context8Direct Ownershipfiling-context30Large Holdings Reductionholdings3Large Salesize4Repeat Sellerpattern1310b5-1 Detectedfiling-context4

Associated companies

Companies in the disclosed reporting history

SIMILARWEB LTD.SMWB · 42 transactions · latest Sep 25, 2026, 11:46 AM

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
No open-market purchases in available history

A 90-day purchase return requires an open-market buy. No eligible purchases are recorded in this history.

Disclosed ownership

How reported shareholdings evolved

Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.

24 observations · Aug 13, 2026 – Sep 24, 2026. Window ends at the latest available report, not today.

Selected observation · Sep 24, 20263,930,481 shares reported
Inspect transaction
View exact observations and source transactions
Transaction dateShares held afterFiledSource
Aug 13, 20264,972,896Aug 17, 2026View transaction
Aug 13, 20264,744,396Aug 17, 2026View transaction
Aug 13, 20264,944,396Aug 17, 2026View transaction
Aug 13, 20264,744,396Aug 17, 2026View transaction
Aug 13, 20264,638,291Aug 17, 2026View transaction
Aug 13, 20264,598,291Aug 17, 2026View transaction
Aug 14, 20264,658,283Aug 17, 2026View transaction
Aug 14, 20264,598,291Aug 17, 2026View transaction
Aug 14, 20264,673,291Aug 17, 2026View transaction
Aug 14, 20264,598,291Aug 17, 2026View transaction
Sep 10, 20264,392,091Sep 14, 2026View transaction
Sep 11, 20264,333,091Sep 14, 2026View transaction
Sep 14, 20264,280,191Sep 16, 2026View transaction
Sep 14, 20264,280,191Sep 16, 2026View transaction
Sep 14, 20264,280,191Sep 16, 2026Amended transaction
Sep 15, 20264,253,500Sep 16, 2026View transaction
Sep 15, 20264,253,500Sep 16, 2026View transaction
Sep 15, 20264,253,500Sep 16, 2026Amended transaction
Sep 16, 20264,207,781Sep 18, 2026View transaction
Sep 17, 20264,177,381Sep 18, 2026View transaction
Sep 18, 20264,139,881Sep 22, 2026View transaction
Sep 21, 20264,107,681Sep 22, 2026View transaction
Sep 24, 20263,930,881Sep 25, 2026View transaction
Sep 24, 20263,930,481Sep 25, 2026View transaction

Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.

Offer Or Insider Activity FAQ

SEC Form 4 context

Who is Offer Or?

Offer Or is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001910424.

Which companies has Offer Or reported transactions for?

SIMILARWEB LTD.

When was Offer Or's latest insider buy?

No open-market insider purchase is available for this period.

When was Offer Or's latest insider sale?

sale at SIMILARWEB LTD. on Sep 24, 2026 valued at $3,348.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

The profile shows average and median 90-day stock returns after open-market purchases when price coverage is available. These are unadjusted stock returns, not realized trading gains. Win rates, benchmark-adjusted returns and conviction scores are not calculated.