Stefan Constantin Ionel 4

What Happened

• Stefan Constantin Ionel, Chief Technology Officer of Amprius Technologies (AMPX), exercised a total of 567,707 shares via option/derivative conversions between Jan 21–23, 2026 and immediately sold the same 567,707 shares in open-market transactions.
• Sales totalled about $6,830,523 (average reported prices: $12.00 and $12.04; executed trades ranged from $12.00 to $12.135). The aggregate cash paid to exercise the options was approximately $81,194 (exercise prices ranged from $0.00 to $0.62), indicating a cashless-style immediate sale of exercised shares.

Key Details

• Transaction dates: Jan 21–23, 2026; Form 4 filed Jan 23, 2026 (file appears timely).
• Shares exercised (acquired): 567,707 total (multiple option lots at strikes $0.05, $0.45, $0.62, and a few $0.00 reported as derivative dispositions).
• Shares sold (disposed): 567,707 total in multiple trades (73,280; 492,827; 1,600).
• Gross sale proceeds: ~$6.83 million; total cash to exercise options: ~$81k.
• Notable footnotes:
  • F1: All exercises/sales were effected pursuant to a Rule 10b5-1 trading plan adopted Sept 11, 2025.
  • F2: Filing notes 585,697 restricted stock units (RSUs) outstanding/contingent (unvested), which are separate from the exercised options.
  • F3–F5: Reported sale prices are average execution prices; trades occurred across small price ranges ($12.00–$12.135).
• Shares owned after transaction: the filing does not state a single total ownership figure in the provided data; the filing does note 585,697 RSUs as a contingent right to receive common stock.

Context

• This was an exercise of derivative/option awards followed by immediate sales — effectively a cashless exercise and sale of the resulting shares. That pattern typically monetizes vested option value but does not by itself indicate an opinion about the company’s future.
• The trades were executed under a pre-established 10b5-1 plan (F1), which prescribes automated sales and can reduce concerns about opportunistic timing.