SMWB
SIMILARWEB LTD. · Services · Market cap $769.6M(Price slightly stale)
Insiders sold $15.2M net in the last 90 days ·1 seller, 0 buyers· 13 of 16 sales under Rule 10b5-1 plans· latest Form 4 filed Sep 25, 2026
Insider Buying
$1.0M
reported purchases (SEC code P)
Insider Selling
$15.2M
reported sales (SEC code S)
Unique Insiders
4
in the rolling window
Latest filing
Sep 25, 2026
Offer Or
SIMILARWEB LTD. (SMWB) has 16 SEC Form 4 filings (43 transaction rows) in the rolling window, disclosed by 4 distinct insiders. Most recent filing: Sep 25, 2026.
Inside the rolling window, 4 insiders at SIMILARWEB LTD. reported 6 open-market purchases totaling $1.0M and 16 open-market sales totaling $15.2M. The most active filer is Chief Executive Officer Offer Or with 19 filings. Insiders have net sold $14.1M over the trailing 6 months. The most recent open-market filing is a sale of 114,300 shares by Chief Executive Officer Offer Or, dated Sep 24, 2026, worth $879K.
- Industry:Software - Application
- CEO:Or Offer
- Employees:1,000
- HQ:Givatayim, IL
- IPO:2021-05-12
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Chief Executive Officer | Sale | 114,300 | $879K | Sep 25 | +16.8% | SEC ↗ | |
| Chief Executive Officer | Sale | 34,500 | $289K | Sep 24 | +17.5% | SEC ↗ | |
| Chief Executive Officer | Sale | 28,400 | $242K | Sep 24 | +17.5% | SEC ↗ | |
| Chief Executive Officer | Sale | 37,500 | $309K | Sep 22 | +4.1% | SEC ↗ | |
| Chief Executive Officer | Sale | 32,200 | $271K | Sep 22 | +4.1% | SEC ↗ | |
| Chief Executive Officer | Sale | 45,719 | $384K | Sep 18 | +7.5% | SEC ↗ | |
| Chief Executive Officer | Sale | 30,400 | $254K | Sep 18 | +7.5% | SEC ↗ | |
| Chief Executive Officer | Sale | 52,900 | $452K | Sep 16 | +6.1% | SEC ↗ | |
| Chief Executive Officer | Sale | 26,691 | $228K | Sep 16 | +6.1% | SEC ↗ | |
| Chief Executive Officer | Sale | 59,200 | $477K | Sep 14 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 59,000 | $475K | Sep 14 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 60,700 | $506K | Sep 10 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 86,300 | $695K | Sep 10 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 383,127 | $3.4M | Aug 27 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 574,605 | $5.1M | Aug 17 | — | SEC ↗ | |
| Chief Executive Officer | Sale | 134,992 | $1.2M | Aug 17 | — | SEC ↗ | |
| Chief Executive Officer | Purchase | 50,000 | $208K | Jun 2 | — | SEC ↗ | |
Eilam BarakFirst filing | Director | Purchase | 50,000 | $193K | May 22 | — | SEC ↗ |
Beit-On Harel MosheFirst filing | Director | Purchase | 75,000 | $292K | May 21 | — | SEC ↗ |
Offer OrFirst filing | Chief Executive Officer | Purchase | 3,105 | $10K | May 20 | — | SEC ↗ |
Offer OrFirst filing | Chief Executive Officer | Purchase | 53,000 | $190K | May 20 | — | SEC ↗ |
Rapaport-Dagim TamarFirst filing | Director | Purchase | 40,000 | $129K | May 19 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does SMWB have?
SIMILARWEB LTD. (SMWB) has 16 SEC Form 4 filings (43 transaction rows) in the rolling 365-day window, disclosed by 4 distinct insiders. Most recent filing: Sep 25, 2026.
When was the most recent SEC Form 4 filing for SMWB?
The most recent Form 4 filing for SMWB on Tracefour is dated Sep 25, 2026.
Who is the most active insider at SMWB?
The most active SEC Form 4 filer at SMWB in the rolling window is Chief Executive Officer Offer Or, with 19 filings.
What is the net insider flow at SMWB over the last 6 months?
Over the trailing 180 days, insiders at SMWB have net sold $14.1M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at SMWB in the current window?
Inside the rolling window, insiders at SMWB bought $1.0M and sold $15.2M based on SEC Form 4 filings.
Can I get alerts for SMWB insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at SIMILARWEB LTD. (SMWB). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
SIMILARWEB LTD. is in the Services sector.