Stefan Constantin Ionel

Amprius Technologies, Inc. · Chief Technology Officer

Stefan Constantin Ionel is listed in public filings as officer: Chief Technology Officer. This Stefan Constantin Ionel insider trading page organizes Form 4 disclosures, reported purchases and sales, transaction dates, share amounts, related issuers, and historical insider activity so readers can review the person's public trading record in one place. Companies and tickers connected to this insider trading profile include Amprius Technologies, Inc. (AMPX). Investors use Stefan Constantin Ionel's insider trading disclosures to study buying and selling patterns, position changes, company-specific activity, and the source evidence behind each reported transaction.

Latest Actions

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Amprius Technologies, Inc.AMPX$14M801.3k sharesSellMay 27, 2026$55.2K3.2k shares$17.19--

Insider Trades History

CompanyHolding ValueLast TransactionAmountTransaction PriceCurrent Price
Amprius Technologies, Inc.AMPX$12M804.5k sharesSellMay 21, 2026$426.1K28.8k shares$14.79--
Amprius Technologies, Inc.AMPX--833.3k sharesGrant / ExerciseMar 4, 2026Disclosure amount unavailable110k shares----
Amprius Technologies, Inc.AMPX$7.3M723.3k sharesSellFeb 23, 2026$257.6K25.4k shares$10.16--
Amprius Technologies, Inc.AMPX$9.0M748.7k sharesSellJan 28, 2026$476.4K39.7k shares$12.00--
Amprius Technologies, Inc.AMPX$039.6k sharesGrant / ExerciseJan 28, 2026$2.0K39.6k shares$0.05--
Amprius Technologies, Inc.AMPX$090 sharesGrant / ExerciseJan 28, 2026$5690 shares$0.62--
Amprius Technologies, Inc.AMPX$2.0k39.6k sharesGrant / ExerciseJan 23, 2026$801.6k shares$0.05--
Amprius Technologies, Inc.AMPX$9.0M748.7k sharesSellJan 23, 2026$19.2K1.6k shares$12.00--
Amprius Technologies, Inc.AMPX$9.0M748.7k sharesSellJan 22, 2026$5.9M492.8k shares$12.04--
Amprius Technologies, Inc.AMPX$072.8k sharesGrant / ExerciseJan 22, 2026$32.8K72.8k shares$0.45--
Amprius Technologies, Inc.AMPX$2.1k41.2k sharesGrant / ExerciseJan 22, 2026$12.7K253.9k shares$0.05--
Amprius Technologies, Inc.AMPX$0166.1k sharesGrant / ExerciseJan 22, 2026$8.3K166.1k shares$0.05--
Amprius Technologies, Inc.AMPX$9.0M748.7k sharesSellJan 21, 2026$879.4K73.3k shares$12.00--
Amprius Technologies, Inc.AMPX$8.3k166.1k sharesGrant / ExerciseJan 21, 2026$79415.9k shares$0.05--
Amprius Technologies, Inc.AMPX$15k295.1k sharesGrant / ExerciseJan 21, 2026$79215.8k shares$0.05--
Amprius Technologies, Inc.AMPX$5690 sharesGrant / ExerciseJan 21, 2026$25.8K41.6k shares$0.62--
Amprius Technologies, Inc.AMPX$7.9M748.7k sharesSellDec 11, 2025$2.1M198.3k shares$10.51--
Amprius Technologies, Inc.AMPX$16k311k sharesGrant / ExerciseDec 11, 2025$6.3K125k shares$0.05--
Amprius Technologies, Inc.AMPX$8.3M822k sharesSellNov 21, 2025$252.3K25k shares$10.08--
Amprius Technologies, Inc.AMPX$5.8M847k sharesSellAug 21, 2025$130.6K19.2k shares$6.82--
Amprius Technologies, Inc.AMPX$2.1M866.1k sharesSellMay 21, 2025$49.5K20.4k shares$2.43--
Amprius Technologies, Inc.AMPX--886.5k sharesGrant / ExerciseMar 19, 2025Disclosure amount unavailable461.5k shares----
Amprius Technologies, Inc.AMPX$03.5k sharesGrant / ExerciseMar 14, 2025$3.4K3.5k shares$0.98--
Amprius Technologies, Inc.AMPX$1.3M421.5k sharesSellFeb 21, 2025$28.4K9.1k shares$3.13--
Amprius Technologies, Inc.AMPX$846k430.6k sharesSellNov 21, 2024$16.8K8.6k shares$1.96--
Amprius Technologies, Inc.AMPX$514k139.6k sharesGrant / ExerciseOct 23, 2024$513.8K139.6k shares$3.68--
Amprius Technologies, Inc.AMPX$3.4k3.5k sharesGrant / ExerciseOct 23, 2024$3.4K3.5k shares$0.98--
Amprius Technologies, Inc.AMPX$26k41.7k sharesGrant / ExerciseOct 23, 2024$25.8K41.7k shares$0.62--
Amprius Technologies, Inc.AMPX$402k386.2k sharesSellAug 21, 2024$9.2K8.8k shares$1.04--