OFFER OR

PrivateCIK: 1910424

Senior insider sale

Chief Executive Officer at SIMILARWEB LTD. — senior position signals high conviction

$9.68M

1.09M shares

What this filing means

OFFER OR plans to sell 1.09M shares of SIMILARWEB LTD. valued at approximately $9.68M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderOFFER ORCIK 1910424
IssuerSIMILARWEB LTD.CIK 1842731
Officer· Chief Executive Officer
Since Mar 2026
1.09M
Shares to sell
$9.68M
Approx. market value
383.13K
Acquired (3 months)
1
Planned
2 completed
Securities Acquired — Last 3 Months4
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Shares acquired upon exercise of employee stock options

Cash payment upon exercise of stock options

8/26/2026
39.30K

Shares acquired upon exercise of employee stock options

Cash payment upon exercise of stock options

8/26/2026
164.82K

Shares acquired upon exercise of employee stock options

Cash payment upon exercise of stock options

8/26/2026
140.01K

Shares acquired upon exercise of employee stock options

Cash payment upon exercise of stock options

8/26/2026
39K
Total acquired383.13K
Planned & Completed Dispositions3
Sort

Completed

Completed

Units to sell

134.99K

Market value

$1.20M

8/14/2026
Completed

Units to sell

574.61K

Market value

$5.06M

8/13/2026

Planned — Approximate Date

NYSEPlanned

Units to sell

383.13K

Market value

$3.42M

8/26/2026
Total

Units

1.09M

Value

$9.68M