Thomas M. Stepien

Companies

• Amprius Technologies, Inc.Chief executive officer Mar 6, 2026 to now¹
• Amprius Technologies, Inc.Board member May 6, 2025 to now²
• Amprius Technologies, Inc.President May 6, 2025 to now²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• ATAmprius Technologies, Inc. AMPX616,010 shares³$4.8M at $7.73Aug 25, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 25, 2026Granted 346 shares of Amprius Technologies, Inc.³
• Aug 25, 2026Gift 346 shares of Amprius Technologies, Inc.³
• Aug 25, 2026Gift 5,000 shares of Amprius Technologies, Inc.³
• Aug 25, 2026Gift 5,000 shares of Amprius Technologies, Inc.³
• Aug 25, 2026Gift 5,000 shares of Amprius Technologies, Inc.³
• Aug 24, 2026Sold 8,000 shares at $10.03 of Amprius Technologies, Inc.³
• Aug 21, 2026Sold 23,529 shares at $10.34 of Amprius Technologies, Inc.³
• Jun 4, 2026Sold 2,000 shares at $20.97 of Amprius Technologies, Inc.⁴
• Jun 4, 2026Gift 36,914 shares of Amprius Technologies, Inc.⁴
• Jun 4, 2026Gift 36,914 shares of Amprius Technologies, Inc.⁴
• Jun 4, 2026Gift 30,384 shares of Amprius Technologies, Inc.⁴
• May 27, 2026Sold 4,375 shares at $17.19 of Amprius Technologies, Inc.⁵
• May 21, 2026Sold 60,702 shares at $14.79 of Amprius Technologies, Inc.⁶
• Mar 4, 2026Granted 150,000 shares of Amprius Technologies, Inc.⁷
• Dec 19, 2025Granted 200,000 shares of Amprius Technologies, Inc.⁸
• Dec 19, 2025Granted 200,000 shares of Amprius Technologies, Inc.⁹
• May 1, 2025Granted 400,000 shares of Amprius Technologies, Inc.¹⁰