SMWB · Insider trading · 13F holders · Congress trades
Similarweb LTD. (SMWB)
Who is buying and selling SMWB: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 10
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $15.8M
- Congress trades, 12 months
- 0
SMWB at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 SMWB insider filed 10 sales worth $15.8M on SEC Form 4, and no open-market purchases; 8 of the sales were pre-planned under Rule 10b5-1.
- 10 13F filers hold SMWB among their 50 largest positions, worth $59.8M combined. The biggest bets by portfolio weight are Ulysses Management LLC (6.2%), Lotus Technology Management, LP (4.2%) and S Squared Technology, LLC (3.2%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
- No member of Congress has disclosed a trade in SMWB.
- SMWB last closed at $8.98 on Oct 29, 2026.
SMWB insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 SMWB insider filed 10 sales worth $15.8M on SEC Form 4, and no open-market purchases; 8 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 25, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 114,300 | $7.69 | $879K | SEC |
| Sep 24, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 62,900 | $8.45 | $531K | SEC |
| Sep 22, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 69,700 | $8.32 | $580K | SEC |
| Sep 18, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 76,119 | $8.38 | $638K | SEC |
| Sep 16, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 79,591 | $8.53 | $679K | SEC |
| Sep 16, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 79,591 | $8.53 | $679K | SEC |
| Sep 14, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 118,200 | $8.06 | $952K | SEC |
| Sep 10, 2026 | Offer Or | Chief Executive Officer | Sale10b5-1 | 147,000 | $8.17 | $1.2M | SEC |
| Aug 27, 2026 | Offer Or | Chief Executive Officer | Sale | 383,127 | $9.00 | $3.4M | SEC |
| Aug 17, 2026 | Offer Or | Chief Executive Officer | Sale | 709,597 | $8.82 | $6.3M | SEC |
Who owns SMWB? Hedge funds and superinvestors
10 13F filers hold SMWB among their 50 largest positions, worth $59.8M combined. The biggest bets by portfolio weight are Ulysses Management LLC (6.2%), Lotus Technology Management, LP (4.2%) and S Squared Technology, LLC (3.2%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Ulysses Management LLCHedge fund | 6.2% | $18.0M | 2,928,474 | -2.3% shares | Q2 2026 |
| S Squared Technology, LLCHedge fund | 3.2% | $10.4M | 1,690,000 | +5.6% shares | Q2 2026 |
| Y.D. More Investments LtdAsset manager | 0.2% | $7.0M | 1,147,035 | -0.4% shares | Q2 2026 |
| CDC Financial, Inc.Investment manager | 3.2% | $4.1M | 674,233 | +5.5% shares | Q2 2026 |
| Alpha Family TrustFamily office | 1.6% | $4.0M | 658,935 | +0.0% shares | Q2 2026 |
| Nano Cap New Millennium Growth Fund L PAsset manager | 3.1% | $4.0M | 650,000 | +66.7% shares | Q2 2026 |
| P.a.w. Capital CorpAsset manager | 3.1% | $3.9M | 640,000 | +28.0% shares | Q2 2026 |
| Sphera Management Technology Funds LtdAsset manager | 1.3% | $3.8M | 615,000 | +0.0% shares | Q2 2026 |
| Lotus Technology Management, LPHedge fund | 4.2% | $3.4M | 531,409 | New | Q2 2026 |
| Lavelle Capital LPWealth manager | 0.6% | $1.2M | 202,727 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 10). Screen SMWB in the grand portfolio →
SMWB stock trades by members of Congress
No member of Congress has disclosed a trade in SMWB.
SMWB questions and answers
Are insiders buying SMWB stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 SMWB insider filed 10 sales worth $15.8M on SEC Form 4, and no open-market purchases; 8 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own SMWB?
10 13F filers hold SMWB among their 50 largest positions, worth $59.8M combined. The biggest bets by portfolio weight are Ulysses Management LLC (6.2%), Lotus Technology Management, LP (4.2%) and S Squared Technology, LLC (3.2%). In their latest 13Fs, 1 manager opened a new position and 4 added to one.
Has Congress traded SMWB?
No member of Congress has disclosed a trade in SMWB.
Who is the largest holder of SMWB?
Among 13F filers, Ulysses Management LLC reports the largest SMWB position, $18.0M (2,928,474 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Ulysses Management LLC's: 6.2% of its portfolio.
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