Form 4 Tracker
Offer Or

Chief Executive Officer; Director, Chief Executive Officer · 11 filings · Latest: Sep 18, 2026

SIMILARWEB LTD.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
SMWB
Or Offer—Aug 26, 2026
Proposed Sale
$8.93383,127$3.4M—
SMWB
Offer OrChief Executive OfficerAug 14, 2026
Sale
$8.87134,992$1.2M4,598,291
SMWB
Offer OrChief Executive OfficerAug 14, 2026
Option Exercise
$1.57134,992$212.4K4,673,291
SMWB
Offer OrChief Executive OfficerAug 13, 2026
Sale
$8.80574,605$5.1M4,598,291
SMWB
Offer OrChief Executive OfficerAug 13, 2026
Option Exercise
$1.81428,500$774.6K4,944,396
SMWB
Or Offer—Aug 14, 2026
Proposed Sale
$9.01134,992$1.2M—
SMWB
Or Offer—Aug 13, 2026
Proposed Sale
$8.7940,000$351.6K—
SMWB
Or Offer—Aug 13, 2026
Proposed Sale
$8.7940,000$351.6K—
SMWB
Or Offer—Aug 13, 2026
Proposed Sale
$8.79534,605$4.7M—
SMWB
Offer OrDirector, Chief Executive OfficerJun 1, 2026
Purchase
$4.1550,000$207.5K4,744,396
SMWB
Offer OrDirector, Chief Executive OfficerMay 19, 2026
Purchase
$3.5853,000$189.7K4,694,396
SMWB
Offer OrDirector, Chief Executive OfficerMay 18, 2026
Purchase
$3.203,105$9.9K4,641,396
SMWB
Offer Or—Sep 8, 2025
Proposed Sale
$9.72100,000$972.0K—
SMWB
Offer Or—Jan 21, 2025
Proposed Sale
$15.6462,500$977.5K—
SMWB
Offer Or—Dec 20, 2024
Proposed Sale
$14.0766,667$938.0K—
SMWB
Offer Or—Dec 18, 2024
Proposed Sale
$13.48170,648$2.3M—
SMWB
Offer Or—Dec 16, 2024
Proposed Sale
$12.78120,000$1.5M—
SMWB
Offer Or—Dec 4, 2024
Proposed Sale
$12.4330,000$372.9K—
SMWB
Offer Or—Dec 5, 2024
Proposed Sale
$13.06150,000$2.0M—
SMWB
Offer Or—Dec 4, 2024
Proposed Sale
$0.00574,845,441$372.9K—