SMWB insider buying and SEC filings, explained
Similarweb Ltd. · CIK 1842731
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$1.0M
Insiders who bought
4
Sold (not marked 10b5-1)
$5.1M
Planned sales (10b5-1)
$6.1M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 24, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 114,300 shares at about $7.69 ($879K), marked as a 10b5-1 plan trade. Holdings down 3% to 3,930,481 shares. | SEC filing Filed Sep 25, 2026 |
| Sep 22–23, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 62,900 shares between Sep 22 and Sep 23 at about $8.45 ($532K), marked as a 10b5-1 plan trade. Holdings down 2% to 4,044,781 shares. | SEC filing Filed Sep 24, 2026 |
| Sep 18–21, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 69,700 shares between Sep 18 and Sep 21 at about $8.32 ($580K), marked as a 10b5-1 plan trade. Holdings down 2% to 4,107,681 shares. | SEC filing Filed Sep 22, 2026 |
| Sep 16–17, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 76,119 shares between Sep 16 and Sep 17 at about $8.38 ($638K), marked as a 10b5-1 plan trade. Holdings down 2% to 4,177,381 shares. | SEC filing Filed Sep 18, 2026 |
| Sep 14–15, 2026 | Planned (10b5-1) Amended filing | Or Offer (CEO) sold 79,591 shares between Sep 14 and Sep 15 at about $8.54 ($679K), marked as a 10b5-1 plan trade. Holdings down 2% to 4,253,500 shares. This amends a filing from Sep 16. | SEC filing Filed Sep 16, 2026 |
| Sep 14–15, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 79,591 shares between Sep 14 and Sep 15 at about $8.54 ($679K), marked as a 10b5-1 plan trade. Holdings down 2% to 4,253,500 shares. | SEC filing Filed Sep 16, 2026 |
| Sep 10–11, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 118,200 shares between Sep 10 and Sep 11 at about $8.06 ($952K), marked as a 10b5-1 plan trade. Holdings down 3% to 4,333,091 shares. | SEC filing Filed Sep 14, 2026 |
| Sep 8–9, 2026 | Planned (10b5-1) | Or Offer (CEO) sold 147,000 shares between Sep 8 and Sep 9 at about $8.17 ($1.2M), marked as a 10b5-1 plan trade. Holdings down 3% to 4,451,291 shares. | SEC filing Filed Sep 10, 2026 |
| Aug 13, 2026 | Sale | Or Offer (CEO) sold 574,605 shares at about $8.80 ($5.1M). Holdings down 11% to 4,598,291 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Jun 1, 2026 | Purchase (code P) | Or Offer (CEO and Director) bought 50,000 shares at $4.15 ($208K), reported as a purchase (code P). Holdings up 1% to 4,744,396 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| May 21, 2026 | Purchase (code P) | Barak Eilam (Director) bought 50,000 shares at about $3.86 ($193K), reported as a purchase (code P). Holdings up 97% to 101,315 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 22, 2026 |
| May 20, 2026 | Purchase (code P) | Harel Moshe Beit-On (Director) bought 75,000 shares at about $3.89 ($292K), reported as a purchase (code P). Holdings up 1% to 10,885,778 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 21, 2026 |
| May 18–19, 2026 | Purchase (code P) | Or Offer (CEO and Director) bought 56,105 shares between May 18 and May 19 at about $3.56 ($200K), reported as a purchase (code P). Holdings up 1% to 4,694,396 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 20, 2026 |
| May 18, 2026 | Purchase (code P) | Tamar Rapaport-Dagim (Director) bought 40,000 shares at about $3.22 ($129K), reported as a purchase (code P). Holdings up 170% to 63,584 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 19, 2026 |
4 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
4 insiders bought in 30 days
$1.0M in purchases since May 18, 2026 · Purchases traded May 18, 2026 to Jun 1, 2026 · Closed
| Insider | Value | Traded | Source |
|---|---|---|---|
| Tamar Rapaport-Dagim (Director) | $129K | May 18, 2026 | SEC filing |
| Or Offer (CEO) | $200K | May 19, 2026 | SEC filing |
| Harel Moshe Beit-On (Director) | $292K | May 20, 2026 | SEC filing |
| Barak Eilam (Director) | $193K | May 21, 2026 | SEC filing |
| Or Offer (CEO) | $208K | Jun 1, 2026 | SEC filing |
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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