Form 4 for SMWB SIMILARWEB LTD.
Accepted 2026-08-17 08:38:49 ET · period of report 2026-08-13 · accession 0001976408-26-000747 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-08-17 08:38 | 2026-08-13+ | SMWB | Offer Or | CEO | M - OptEx | $1.75 | +563.5K | 4.67M | +14% | +$987.0K |
| DM | 2026-08-17 08:38 | 2026-08-13+ | SMWB | Offer Or | CEO | S - Sale+OE | $8.82 | -709.6K | 4.60M | -13% | -$6.26M |
| DM | 2026-08-17 08:38 | 2026-08-13+ | SMWB | Offer Or | CEO | M - OptEx | $0.00 | -563.5K | 739.0K | -43% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Ordinary Shares | 2026-08-13 | M | A | 228,500 | $3.04 | 4,972,896 | D | — | — | (F6) The shares were acquired upon the exercise of stock options |
| 2 | Common | Ordinary Shares | 2026-08-13 | S | D | 228,500 | $8.82 | 4,744,396 | D | — | — | (F1) The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.66 to $9.005. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request |
| 3 | Common | Ordinary Shares | 2026-08-13 | M | A | 200,000 | $0.4 | 4,944,396 | D | — | — | (F6) The shares were acquired upon the exercise of stock options |
| 4 | Common | Ordinary Shares | 2026-08-13 | S | D | 200,000 | $8.79 | 4,744,396 | D | — | — | (F2) The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.69 to $8.88. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request |
| 5 | Common | Ordinary Shares | 2026-08-13 | S | D | 106,105 | $8.75 | 4,638,291 | D | — | — | |
| 6 | Common | Ordinary Shares | 2026-08-13 | S | D | 40,000 | $8.90 | 4,598,291 | D | — | — | |
| 7 | Common | Ordinary Shares | 2026-08-14 | M | A | 59,992 | $3.04 | 4,658,283 | D | — | — | (F6) The shares were acquired upon the exercise of stock options |
| 8 | Common | Ordinary Shares | 2026-08-14 | S | D | 59,992 | $8.90 | 4,598,291 | D | — | — | (F3) The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.90 to $8.92. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request |
| 9 | Common | Ordinary Shares | 2026-08-14 | M | A | 75,000 | $0.4 | 4,673,291 | D | — | — | (F6) The shares were acquired upon the exercise of stock options |
| 10 | Common | Ordinary Shares | 2026-08-14 | S | D | 75,000 | $8.85 | 4,598,291 | D | — | — | (F4) The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $8.85 to $8.87. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request |
| 11 | Derivative | Options to purchase one Ordinary Share | 2026-08-13 | M | D | 228,500 | $0.00 | 200,000 | D | $3.04 · 2022-01-29 to 2031-01-28 | 228,500 Ordinary shares | (F5) The options reported herein were exercised and the underlying shares were sold on the same date as reported in Table I. |
| 12 | Derivative | Options to purchase one Ordinary Share | 2026-08-13 | M | D | 200,000 | $0.00 | 814,000 | D | $0.4 · 2015-02-14 to 2028-02-14 | 200,000 Ordinary shares | (F5) The options reported herein were exercised and the underlying shares were sold on the same date as reported in Table I. |
| 13 | Derivative | Options to purchase one Ordinary Share | 2026-08-14 | M | D | 59,992 | $0.00 | 140,008 | D | $3.04 · 2022-01-29 to 2031-01-28 | 59,992 Ordinary shares | (F5) The options reported herein were exercised and the underlying shares were sold on the same date as reported in Table I. |
| 14 | Derivative | Options to purchase one Ordinary Share | 2026-08-14 | M | D | 75,000 | $0.00 | 739,000 | D | $0.4 · 2015-02-14 to 2028-02-14 | 75,000 Ordinary shares | (F5) The options reported herein were exercised and the underlying shares were sold on the same date as reported in Table I. |