Amprius CEO Kang Sun steps down Dec 31; President Tom Stepien appointed CEO effective Jan 1, 2026

Amprius Technologies, Inc.

CEO Kang Sun to step down effective Dec 31, 2025; remains on Board as Executive Advisor from Jan 1, 2026.
New employment agreement for Sun: $633k annual salary, no annual bonus, eligible for equity vesting, severance of 6 months base salary.
President Tom Stepien appointed CEO effective Jan 1, 2026; receives $633k base salary, target bonus 100% of base.
Stepien granted 200,000 RSUs vesting 25% at 1-year anniversary, remainder quarterly over 3 years.
Stepien previously CEO of South 8 Technologies and Operating Partner at KCK Group; transition not due to disagreement.

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