person · Reporting owner
Stefan Constantin Ionel
Disclosed activity across 1 company
Sign in to followReported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amprius Technologies, Inc.AMPX · Entity 4742 | Chief Technology Officer | August 21, 2026 | August 25, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Amprius Technologies, Inc.
Report date August 21, 2026 · Filed August 25, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common stockSEC Table I · non-derivative | Direct | 771,629 |
Reported balance
After 2026-08-21 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2026-08-21 · Sale · Disposed 29,681 · Balance 771,629 F1: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3: Includes 525,176 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. |
Filing footnotes · ownership attribution and instrument terms
F1: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.
F2: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F3: Includes 525,176 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 21, 2026 Filed Aug 25, 2026 21:22 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 29,681 | $10.34 | $306,931.22 |
DisclosureSEC source: 0001940928-26-000024 · wk-form4_1787692925.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 771,629 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 525,176 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| May 27, 2026 Filed May 28, 2026 22:12 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 3,208 | $17.19 | $55,156.75 |
DisclosureSEC source: 0001940928-26-000020 · wk-form4_1780006345.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 801,310 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.13 to $17.3, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 584,308 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| May 21, 2026 Filed May 26, 2026 23:10 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 28,812 | $14.79 | $426,083.38 |
DisclosureSEC source: 0001940928-26-000016 · wk-form4_1779837023.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 804,518 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 591,183 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| March 04, 2026 Filed Mar 6, 2026 22:46 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantCommon stock | 110,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001940928-26-000012 · wk-form4_1772837175.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 833,330 F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/16th of shares subject to award will vest on May 20, 2026 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2030. F2 · balance_after: Includes 643,440 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| February 23, 2026 Filed Feb 24, 2026 22:08 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 25,366 | $10.16 | $257,604.41 |
DisclosureSEC source: 0001940928-26-000009 · wk-form4_1771970932.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 723,330 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $9.96 to $10.35, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 533,440 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 28, 2026 Filed Jan 30, 2026 23:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 39,600 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000004 · wk-form4_1769814158.xml · derivative · entry 5 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common stock · 39,600 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 28, 2026 Filed Jan 30, 2026 23:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 90 | $0.00 Strike: $0.62 | $0.00 |
DisclosureSEC source: 0001940928-26-000004 · wk-form4_1769814158.xml · derivative · entry 4 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common stock · 90 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 28, 2026 Filed Jan 30, 2026 23:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 39,690 | $12.00 | $476,351.44 |
DisclosureSEC source: 0001940928-26-000004 · wk-form4_1769814158.xml · nonDerivative · entry 3 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,696 F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $12.00 to $12.02, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 28, 2026 Filed Jan 30, 2026 23:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 39,600 | $0.05 | $1,980.00 |
DisclosureSEC source: 0001940928-26-000004 · wk-form4_1769814158.xml · nonDerivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 788,386 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 28, 2026 Filed Jan 30, 2026 23:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 90 | $0.62 | $55.80 |
DisclosureSEC source: 0001940928-26-000004 · wk-form4_1769814158.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,786 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 23, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 1,600 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 17 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 39,600 Underlying: Common stock · 1,600 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 23, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 1,600 | $12.00 | $19,200.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 10 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,696 F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F5 · price: These shares were sold at $12.00. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the shares sold. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 23, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 1,600 | $0.05 | $80.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 9 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 750,296 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 166,104 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 16 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common stock · 166,104 shares Expires 2027-07-11 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 72,795 | $0.00 Strike: $0.45 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 15 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common stock · 72,795 shares Expires 2028-03-19 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 253,928 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 14 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 41,200 Underlying: Common stock · 253,928 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 492,827 | $12.04 | $5,931,912.19 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 8 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,696 F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F4 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $12.00 to $12.135, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 166,104 | $0.05 | $8,305.20 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 7 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,241,523 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 72,795 | $0.45 | $32,757.75 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 6 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,075,419 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 22, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 253,928 | $0.05 | $12,696.40 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 5 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,002,624 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 15,883 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 13 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 166,104 Underlying: Common stock · 15,883 shares Expires 2027-07-11 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 15,834 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 12 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 295,128 Underlying: Common stock · 15,834 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 41,563 | $0.00 Strike: $0.62 | $0.00 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · derivative · entry 11 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 90 Underlying: Common stock · 41,563 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 73,280 | $12.00 | $879,411.30 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 4 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,696 F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $12.00 to $12.01, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 15,883 | $0.05 | $794.15 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 3 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 821,976 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 15,834 | $0.05 | $791.70 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 806,093 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| January 21, 2026 Filed Jan 23, 2026 22:36 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 41,563 | $0.62 | $25,769.06 |
DisclosureSEC source: 0001940928-26-000002 · wk-form4_1769207803.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 790,259 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 23:25 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 125,000 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-25-000020 · wk-form4_1765841130.xml · derivative · entry 3 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 310,962 Underlying: Common stock · 125,000 shares Expires 2027-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 23:25 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 198,255 | $10.51 | $2,083,382.49 |
DisclosureSEC source: 0001940928-25-000020 · wk-form4_1765841130.xml · nonDerivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 748,696 F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.14 to $11.49, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 23:25 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 125,000 | $0.05 | $6,250.00 |
DisclosureSEC source: 0001940928-25-000020 · wk-form4_1765841130.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 946,951 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: The exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2025. F2 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| November 21, 2025 Filed Nov 25, 2025 23:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 25,024 | $10.08 | $252,274.45 |
DisclosureSEC source: 0001940928-25-000018 · wk-form4_1764114929.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 821,951 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.05 to $10.13, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 585,697 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| August 21, 2025 Filed Aug 26, 2025 00:04 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 19,159 | $6.82 | $130,591.58 |
DisclosureSEC source: 0001940928-25-000014 · wk-form4_1756166640.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 846,975 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $6.78 to $6.91, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 637,953 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| May 21, 2025 Filed May 23, 2025 21:54 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 20,366 | $2.43 | $49,530.11 |
DisclosureSEC source: 0001940928-25-000009 · wk-form4_1748037269.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 866,134 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $2.40 to $2.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 690,211 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| March 19, 2025 Filed Mar 21, 2025 20:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantCommon stock | 461,540 | $0.00 | $0.00 |
DisclosureSEC source: 0001940928-25-000004 · wk-form4_1742590507.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 886,500 F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/16th of shares subject to award will vest on May 20, 2025 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2029. F2 · balance_after: Includes 742,467 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| March 14, 2025 Filed Mar 18, 2025 21:07 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 3,471 | $0.00 Strike: $0.98 | $0.00 |
DisclosureSEC source: 0001940928-25-000003 · wk-form4_1742332052.xml · derivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common stock · 3,471 shares Expires 2025-03-17 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 14, 2025 Filed Mar 18, 2025 21:07 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 3,471 | $0.98 | $3,401.58 |
DisclosureSEC source: 0001940928-25-000003 · wk-form4_1742332052.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 424,960 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · balance_after: Includes 280,927 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| February 21, 2025 Filed Feb 25, 2025 00:38 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 9,066 | $3.13 | $28,405.59 |
DisclosureSEC source: 0001940928-25-000002 · wk-form4_1740443919.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 421,489 F1 · shares: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $3.06 to $3.215, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 280,927 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| November 21, 2024 Filed Nov 22, 2024 21:21 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 8,575 | $1.96 | $16,846.45 |
DisclosureSEC source: 0001940928-24-000009 · wk-form4_1732310477.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 430,555 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $1.93 to $2.02, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 304,338 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| October 23, 2024 Filed Oct 25, 2024 22:33 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 139,613 | Not disclosed Strike: $3.68 | Not disclosed |
DisclosureSEC source: 0001628280-24-043856 · wk-form4_1729895624.xml · derivative · entry 4 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 139,613 Underlying: Common stock · 139,613 shares Expires 2031-12-15 F3 · kind: In connection with the Liquidating Distribution, the Issuer assumed Amprius Holdings' outstanding options to purchase shares of Amprius Holdings' Class A common stock (the "Holdings Options") granted under the Amprius, Inc. 2008 Stock Plan and the Amprius, Inc. Second Equity Incentive Plan (the "Option Assumption"). As a result of the Option Assumption, each Holdings Option held by the Reporting Person became an option to purchase a number of shares of the Issuer's common stock, subject to certain adjustments to the terms of such options to comply with the requirements of U.S. Internal Revenue Code treasury regulation relating to equity grant assumptions. F7 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 201,110 shares of Amprius Holdings' Class A common stock at an exercise price of $2.55 per share. F4 · derivative.exercise_date: The options are fully vested. Read SEC document |
| October 23, 2024 Filed Oct 25, 2024 22:33 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 41,653 | Not disclosed Strike: $0.62 | Not disclosed |
DisclosureSEC source: 0001628280-24-043856 · wk-form4_1729895624.xml · derivative · entry 3 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 41,653 Underlying: Common stock · 41,653 shares Expires 2027-03-15 F3 · kind: In connection with the Liquidating Distribution, the Issuer assumed Amprius Holdings' outstanding options to purchase shares of Amprius Holdings' Class A common stock (the "Holdings Options") granted under the Amprius, Inc. 2008 Stock Plan and the Amprius, Inc. Second Equity Incentive Plan (the "Option Assumption"). As a result of the Option Assumption, each Holdings Option held by the Reporting Person became an option to purchase a number of shares of the Issuer's common stock, subject to certain adjustments to the terms of such options to comply with the requirements of U.S. Internal Revenue Code treasury regulation relating to equity grant assumptions. F6 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 60,000 shares of Amprius Holdings' Class A common stock at an exercise price of $0.43 per share. F4 · derivative.exercise_date: The options are fully vested. Read SEC document |
| October 23, 2024 Filed Oct 25, 2024 22:33 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 3,471 | Not disclosed Strike: $0.98 | Not disclosed |
DisclosureSEC source: 0001628280-24-043856 · wk-form4_1729895624.xml · derivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,471 Underlying: Common stock · 3,471 shares Expires 2025-03-17 F3 · kind: In connection with the Liquidating Distribution, the Issuer assumed Amprius Holdings' outstanding options to purchase shares of Amprius Holdings' Class A common stock (the "Holdings Options") granted under the Amprius, Inc. 2008 Stock Plan and the Amprius, Inc. Second Equity Incentive Plan (the "Option Assumption"). As a result of the Option Assumption, each Holdings Option held by the Reporting Person became an option to purchase a number of shares of the Issuer's common stock, subject to certain adjustments to the terms of such options to comply with the requirements of U.S. Internal Revenue Code treasury regulation relating to equity grant assumptions. F5 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 5,000 shares of Amprius Holdings' Class A common stock at an exercise price of $0.68 per share. F4 · derivative.exercise_date: The options are fully vested. Read SEC document |
| August 21, 2024 Filed Aug 22, 2024 20:57 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 8,800 | $1.04 | $9,152.00 |
DisclosureSEC source: 0001628280-24-038250 · wk-form4_1724360255.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 386,168 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $1.03 to $1.0523, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F3 · balance_after: Includes 327,749 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| May 22, 2024 Filed May 25, 2024 01:08 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 4,121 | $1.36 | $5,588.08 |
DisclosureSEC source: 0001940928-24-000003 · wk-form4_1716599288.xml · nonDerivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 394,968 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $1.31 to $1.3824, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. F4 · balance_after: Includes 351,159 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| May 21, 2024 Filed May 25, 2024 01:08 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 5,272 | $1.33 | $6,999.11 |
DisclosureSEC source: 0001940928-24-000003 · wk-form4_1716599288.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 399,089 F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $1.31 to $1.345, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document |
| March 19, 2024 Filed Mar 19, 2024 23:33 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantCommon stock | 374,570 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-24-011987 · wk-form4_1710891188.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 404,361 F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/16th of shares subject to award will vest on May 20, 2024 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2028. F2 · balance_after: Includes 374,570 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. Read SEC document |
| September 15, 2023 Filed Sep 18, 2023 21:40 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 33,630 | $3.89 | $130,726.54 |
DisclosureSEC source: 0001940928-23-000011 · wf-form4_169507320058205.xml · nonDerivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 29,791 F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $3.85 to $3.96, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document |
| September 14, 2023 Filed Sep 18, 2023 21:40 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 46,370 | $3.66 | $169,491.62 |
DisclosureSEC source: 0001940928-23-000011 · wf-form4_169507320058205.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 63,421 F1 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $3.65 to $3.70, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. Read SEC document |
| September 09, 2023 Filed Sep 12, 2023 20:43 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 80,000 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-23-000008 · wf-form4_169455140238278.xml · derivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 435,962 Underlying: Common stock · 80,000 shares Expires 2024-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| September 09, 2023 Filed Sep 12, 2023 20:43 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 80,000 | $0.05 | $4,000.00 |
DisclosureSEC source: 0001940928-23-000008 · wf-form4_169455140238278.xml · nonDerivative · entry 1 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 109,791 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| December 14, 2022 Filed Dec 15, 2022 23:40 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 30,000 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001940928-22-000002 · wf-form4_167114761444644.xml · derivative · entry 2 Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 515,962 Underlying: Common stock · 30,000 shares Expires 2024-03-15 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.