BIALECKI ANDREW

PrivateCIK: 1991099
Location

BOSTON, MA

Senior insider sale

Co-Chief Executive Officer at KLAVIYO, INC. — senior position signals high conviction

$55.79M

3.09M shares

What this filing means

BIALECKI ANDREW plans to sell 3.09M shares of KLAVIYO, INC. valued at approximately $55.79M. 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.

InsiderBIALECKI ANDREWCIK 1991099
IssuerKLAVIYO, INC.CIK 1835830
DirectorOfficer10% Owner· Co-Chief Executive Officer
Since Mar 2026
3.09M
Shares to sell
$55.79M
Approx. market value
212.53K
Acquired (3 months)
1
Planned
49 completed
Securities Acquired — Last 3 Months1
Sort

Previously Exercised Stock Options

Cash

5/14/2025
212.53K
Total acquired212.53K
Planned & Completed Dispositions50
Sort

Completed

Completed

Units to sell

200K

Market value

$2.98M

5/19/2026
Completed

Units to sell

200K

Market value

$2.92M

5/12/2026
Completed

Units to sell

23.80K

Market value

$470.6K

4/30/2026
Completed

Units to sell

23.80K

Market value

$470.7K

4/29/2026
Completed

Units to sell

23.80K

Market value

$473.2K

4/28/2026
Completed

Units to sell

23.80K

Market value

$463.7K

4/27/2026
Completed

Units to sell

23.80K

Market value

$460.9K

4/24/2026
Completed

Units to sell

23.80K

Market value

$452.0K

4/23/2026
Completed

Units to sell

23.80K

Market value

$486.4K

4/22/2026
Completed

Units to sell

23.80K

Market value

$487.2K

4/21/2026
Completed

Units to sell

23.80K

Market value

$473.9K

4/20/2026
Completed

Units to sell

23.80K

Market value

$439.4K

4/17/2026
Completed

Units to sell

23.80K

Market value

$443.8K

4/16/2026
Completed

Units to sell

23.80K

Market value

$433.4K

4/15/2026
Completed

Units to sell

23.80K

Market value

$402.6K

4/14/2026
Completed

Units to sell

200K

Market value

$3.44M

4/14/2026
Completed

Units to sell

23.80K

Market value

$418.2K

4/13/2026
Completed

Units to sell

23.80K

Market value

$391.7K

4/10/2026
Completed

Units to sell

23.80K

Market value

$419.1K

4/9/2026
Completed

Units to sell

23.80K

Market value

$440.7K

4/8/2026
Completed

Units to sell

200K

Market value

$3.73M

4/7/2026
Completed

Units to sell

23.80K

Market value

$444.2K

4/7/2026
Completed

Units to sell

23.80K

Market value

$453.9K

4/6/2026
Completed

Units to sell

23.80K

Market value

$455.9K

4/2/2026
Completed

Units to sell

23.80K

Market value

$459.6K

4/1/2026
Completed

Units to sell

200K

Market value

$3.88M

3/31/2026
Completed

Units to sell

23.80K

Market value

$459.2K

3/31/2026
Completed

Units to sell

71.40K

Market value

$1.36M

3/30/2026
Completed

Units to sell

23.80K

Market value

$428.3K

3/25/2026
Completed

Units to sell

200K

Market value

$3.63M

3/24/2026
Completed

Units to sell

23.80K

Market value

$432.3K

3/24/2026
Completed

Units to sell

23.80K

Market value

$443.7K

3/23/2026
Completed

Units to sell

23.80K

Market value

$444.0K

3/20/2026
Completed

Units to sell

23.80K

Market value

$446.5K

3/19/2026
Completed

Units to sell

23.80K

Market value

$446.5K

3/18/2026
Completed

Units to sell

200K

Market value

$3.87M

3/17/2026
Completed

Units to sell

23.80K

Market value

$456.5K

3/17/2026
Completed

Units to sell

23.80K

Market value

$455.6K

3/16/2026
Completed

Units to sell

71.40K

Market value

$1.35M

3/13/2026
Completed

Units to sell

206.83K

Market value

$4.13M

3/10/2026
Completed

Units to sell

23.80K

Market value

$479.0K

3/10/2026
Completed

Units to sell

23.80K

Market value

$490.2K

3/9/2026
Completed

Units to sell

23.80K

Market value

$506.4K

3/6/2026
Completed

Units to sell

23.80K

Market value

$496.6K

3/5/2026
Completed

Units to sell

23.80K

Market value

$463.9K

3/4/2026
Completed

Units to sell

200K

Market value

$3.73M

3/3/2026
Completed

Units to sell

23.80K

Market value

$450.8K

3/3/2026
Completed

Units to sell

23.80K

Market value

$433.0K

3/2/2026
Completed

Units to sell

47.60K

Market value

$833.6K

2/27/2026

Planned — Approximate Date

NYSEPlanned

Units to sell

212.53K

Market value

$3.16M

5/26/2026
Total

Units

3.09M

Value

$55.79M

BIALECKI ANDREW — Planned Insider Sale (Form 144) | Finecho