Insider Trading June 5, 2026 05:01 PM

Amprius CEO Thomas Stepien Offloads $41,940 in Company Stock Amid Mixed Operational Developments

Executive disposal coincides with recent quarterly earnings miss and short seller allegations, as the battery supplier navigates a complex market landscape.

By Derek Hwang
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AMPX

Thomas M. Stepien, Chief Executive Officer and a director at Amprius Technologies, Inc. (NASDAQ:AMPX), executed a sale of company shares totaling $41,940 on June 4, 2026, according to a filing with the Securities and Exchange Commission. The transaction involved the disposal of 2,000 shares of common stock at a price of $20.97 per share. This sale occurs as the stock trades at $19.69, a level near its 52-week high of $24.23, following a 757% gain over the past year. Post-transaction, Mr. Stepien's direct ownership stands at 625,625 shares, including 615,625 restricted stock units. The filing also details additional transfers, including bona fide gifts of 30,384 shares and a transfer of 36,914 shares to the Rogers Stepien Family Revocable Trust, where he and his spouse serve as co-trustees. Following these actions, Mr. Stepien directly holds 625,625 shares and indirectly holds 36,914 shares through the trust. The company recently reported Q1 2026 earnings with a net loss of $5 million, or -$0.04 per share, missing the forecasted -$0.0278 per share, though revenue of $28.5 million beat the predicted $25.32 million. Additionally, Amprius has entered a collaboration with Matternet to supply silicon anode lithium-ion batteries for M2 delivery drones, with plans to expand to next-generation platforms by early 2027. Meanwhile, short seller Manatee Research released a report alleging exaggerated orders and disclosure irregularities at Amprius Technologies, raising concerns about the company’s operations.

Amprius CEO Thomas Stepien Offloads $41,940 in Company Stock Amid Mixed Operational Developments
AMPX
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Key Points

  • Amprius CEO Thomas Stepien sold 2,000 shares at $20.97 per share, reducing his direct ownership but retaining significant holdings through restricted stock units and family trusts.
  • The company reported mixed Q1 2026 financial results, with revenue of $28.5 million beating estimates, while the net loss of $5 million missed forecasts.
  • Amprius has entered a strategic collaboration with Matternet to supply silicon anode lithium-ion batteries for delivery drones, with expansion planned for early 2027.

Thomas M. Stepien, who serves as both Chief Executive Officer and a director at Amprius Technologies, Inc. (NASDAQ:AMPX), executed a transaction disposing of company shares valued at $41,940 on June 4, 2026, according to a recent filing with the Securities and Exchange Commission. The sale was executed at a price of $20.97 per share, resulting in the disposal of 2,000 shares of common stock. This activity occurs as the stock trades at $19.69, a level positioned near its 52-week high of $24.23, following a substantial 757% gain over the past year.

Following the completion of this transaction, Mr. Stepien's direct ownership in the company stands at 625,625 shares. This total includes 615,625 restricted stock units, which represent a contingent right to receive common stock, subject to vesting schedules. The filing also documented several additional transfers of common stock on the same date for which no price was paid. Specifically, Mr. Stepien made bona fide gifts of 30,384 shares. Additionally, he transferred 36,914 shares to the Rogers Stepien Family Revocable Trust. These shares were subsequently acquired by the trust, for which Mr. Stepien and his spouse serve as co-trustees. Following these transactions, Mr. Stepien directly holds 625,625 shares, which includes the restricted stock units, and indirectly holds 36,914 shares through the Rogers Stepien Family Revocable Trust.

According to InvestingPro analysis, which indicates the stock is currently overvalued, the company holds more cash than debt on its balance sheet, though it remains unprofitable. Investors can access 15 additional ProTips and comprehensive analysis through the platform’s detailed Pro Research Report.

In other recent news, Amprius Technologies reported its Q1 2026 earnings, showing a net loss of $5 million or -$0.04 per share, which was below the forecasted -$0.0278 per share. However, the company exceeded revenue expectations with $28.5 million, surpassing the predicted $25.32 million. This earnings report has been a focal point for investors, reflecting mixed results with a revenue beat but an earnings miss. Meanwhile, Amprius Technologies has entered a collaboration with Matternet to supply silicon anode lithium-ion batteries for Matternet’s M2 delivery drones. This partnership aims to expand with the development of battery solutions for Matternet’s next-generation platform, planned for early 2027. Additionally, short seller Manatee Research released a report alleging exaggerated orders and disclosure irregularities at Amprius Technologies. The investigation by Manatee Research involved interviews and legal filings, raising concerns about the company’s operations. These developments are shaping the current landscape for Amprius Technologies, as investors assess the implications of both the earnings results and the short seller’s allegations.

Risks

  • Short seller Manatee Research has released a report alleging exaggerated orders and disclosure irregularities, raising concerns about the company’s operations and financial transparency.
  • Amprius Technologies remains unprofitable with a net loss of $5 million in Q1 2026, despite exceeding revenue expectations, indicating ongoing financial challenges.
  • The stock has experienced a 757% gain over the past year, and InvestingPro analysis indicates the stock is currently overvalued, suggesting potential volatility and valuation risks.

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