SEC Form 4 · accession 0001976408-26-000747
SIMILARWEB LTD. · SMWB
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Or Offer
Officer — Chief Executive Officer
Period of report
Aug 13, 2026
Accepted (ET)
Aug 17, 2026 · 8:38 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001842731
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary SharesF6 | Aug 13, 2026 | M | 228,500 | $3.04 | A | 4,972,896 | D | |
| Ordinary SharesF1 | Aug 13, 2026 | S | 228,500 | $8.8215 | D | 4,744,396 | D | |
| Ordinary SharesF6 | Aug 13, 2026 | M | 200,000 | $0.40 | A | 4,944,396 | D | |
| Ordinary SharesF2 | Aug 13, 2026 | S | 200,000 | $8.7864 | D | 4,744,396 | D | |
| Ordinary Shares | Aug 13, 2026 | S | 106,105 | $8.75 | D | 4,638,291 | D | |
| Ordinary Shares | Aug 13, 2026 | S | 40,000 | $8.90 | D | 4,598,291 | D | |
| Ordinary SharesF6 | Aug 14, 2026 | M | 59,992 | $3.04 | A | 4,658,283 | D | |
| Ordinary SharesF3 | Aug 14, 2026 | S | 59,992 | $8.9006 | D | 4,598,291 | D | |
| Ordinary SharesF6 | Aug 14, 2026 | M | 75,000 | $0.40 | A | 4,673,291 | D | |
| Ordinary SharesF4 | Aug 14, 2026 | S | 75,000 | $8.852 | D | 4,598,291 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Options to purchase one Ordinary Share | $3.04 | Aug 13, 2026 | M | 228,500 | D | Jan 29, 2022 | Jan 28, 2031 | Ordinary shares | 228,500 | 200,000 | D |
| Options to purchase one Ordinary Share | $0.40 | Aug 13, 2026 | M | 200,000 | D | Feb 14, 2015 | Feb 14, 2028 | Ordinary shares | 200,000 | 814,000 | D |
| Options to purchase one Ordinary Share | $3.04 | Aug 14, 2026 | M | 59,992 | D | Jan 29, 2022 | Jan 28, 2031 | Ordinary shares | 59,992 | 140,008 | D |
| Options to purchase one Ordinary Share | $0.40 | Aug 14, 2026 | M | 75,000 | D | Feb 14, 2015 | Feb 14, 2028 | Ordinary shares | 75,000 | 739,000 | D |
Explanation of responses
- F1The 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
- F2The 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
- F3The 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
- F4The 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
- F5The options reported herein were exercised and the underlying shares were sold on the same date as reported in Table I.
- F6The shares were acquired upon the exercise of stock options