SIMILARWEB LTD.
SMWBNYSETechnology · Services-Computer Programming, Data Processing, Etc. · L3 · SEC filings ↗ · Compare ⊕
View price & chart on Yahoo Finance ↗Financials
SEC XBRL · annualNo structured XBRL financials available (common for pre-2009 filers, foreign issuers, or companies that never reported as a US public company).
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Phoenix Financial Ltd.Passive (13G)Feb 24, 2026
- Viola Growth Management Fund 2 Ltd.Passive (13G)Feb 12, 2025
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 714,388 | 1.0 | +175.8% |
| Apr 30, 2026 | 258,981 | 1.0 | -54.8% |
| Apr 15, 2026 | 573,412 | 1.4 | -22.6% |
| Mar 31, 2026 | 740,892 | 1.8 | -1.7% |
| Mar 13, 2026 | 753,425 | 1.4 | -25.2% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Recent SEC filings
All filings ↗- 6-KMay 28, 2026
- 4PRIMARY DOCUMENTMay 22, 2026
- 4PRIMARY DOCUMENTMay 21, 2026
- 4PRIMARY DOCUMENTMay 20, 2026
- 4PRIMARY DOCUMENTMay 19, 2026
- 6-KMay 14, 2026
- 6-KMay 13, 2026
- 6-KMay 13, 2026
- 6-KApr 23, 2026
- 3PRIMARY DOCUMENTApr 13, 2026
- 3PRIMARY DOCUMENTApr 10, 2026
- 3PRIMARY DOCUMENTApr 10, 2026
- 3PRIMARY DOCUMENTApr 9, 2026
- 3PRIMARY DOCUMENTMar 26, 2026
- 6-KMar 26, 2026