STEFAN CONSTANTIN IONEL

PrivateCIK: 1940928
Location

FREMONT, CA

Senior insider sale

Chief Technology Officer at AMPRIUS TECHNOLOGIES, INC. — senior position signals high conviction

$9.65M

831.02K shares

What this filing means

STEFAN CONSTANTIN IONEL plans to sell 831.02K shares of AMPRIUS TECHNOLOGIES, INC. valued at approximately $9.65M. 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.

InsiderSTEFAN CONSTANTIN IONELCIK 1940928
Officer· Chief Technology Officer
Since Mar 2026
831.02K
Shares to sell
$9.65M
Approx. market value
52.26K
Acquired (3 months)
1
Planned
6 completed
Securities Acquired — Last 3 Months1
Sort

Release of restricted stock units

Compensation

2/20/2026
52.26K
Total acquired52.26K
Planned & Completed Dispositions7
Sort

Completed

Completed

Units to sell

39.69K

Market value

$476.4K

1/28/2026
Completed

Units to sell

1.60K

Market value

$19.2K

1/23/2026
Completed

Units to sell

492.83K

Market value

$5.93M

1/22/2026
Completed

Units to sell

73.28K

Market value

$879.4K

1/21/2026
Completed

Units to sell

73.25K

Market value

$769.8K

12/11/2025
Completed

Units to sell

125K

Market value

$1.31M

12/11/2025

Planned — Approximate Date

NYSEPlanned

Units to sell

25.37K

Market value

$257.7K

2/23/2026
Total

Units

831.02K

Value

$9.65M

STEFAN CONSTANTIN IONEL — Planned Insider Sale (Form 144) | Finecho