Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amprius Technologies, Inc.AMPX · Entity 4742 | President of Amprius Lab | March 10, 2025 | March 12, 2025 |
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 March 10, 2025 · Filed March 12, 2025
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common stockSEC Table I · non-derivative | Direct | 422,668 |
Reported balance
After 2025-03-10 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 1 · 2025-03-10 · Exercise / conversion · Acquired 3,471 · Balance 422,668 F1: Includes 419,197 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. |
| Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.98 · Expires 2025-03-17 | Direct | 0 |
Reported balance
After 2025-03-10 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2025-03-10 · Exercise / conversion · Disposed 3,471 · Balance 0 |
Filing footnotes · ownership attribution and instrument terms
F1: Includes 419,197 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 |
|---|---|---|---|---|---|---|
| November 07, 2023 Filed Nov 9, 2023 23:04 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 24,809 | $0.05 | $1,240.45 |
DisclosureSEC source: 0001942459-23-000006 · wk-form4_1699571059.xml · nonDerivative · entry 1 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 24,809 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 12, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 22,969 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · derivative · entry 9 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,883,851 Underlying: Common stock · 22,969 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 12, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 22,969 | $3.90 | $89,691.65 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 6 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 F1 · kind: The exercises and sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. F4 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $3.71 to $4.13, 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. Read SEC document |
| October 12, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 22,969 | $0.05 | $1,148.45 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 5 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 22,969 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 11, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 56,702 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · derivative · entry 8 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,906,820 Underlying: Common stock · 56,702 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 11, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 56,702 | $4.16 | $236,158.16 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 4 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 F1 · kind: The exercises and sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $4.06 to $4.35, 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. Read SEC document |
| October 11, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 56,702 | $0.05 | $2,835.10 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 3 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,702 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 10, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 70,329 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · derivative · entry 7 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 1,963,522 Underlying: Common stock · 70,329 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| October 10, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 70,329 | $4.36 | $306,543.01 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 2 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 F1 · kind: The exercises and sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $4.21 to $4.49, 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. Read SEC document |
| October 10, 2023 Filed Oct 12, 2023 22:55 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 70,329 | $0.05 | $3,516.45 |
DisclosureSEC source: 0001942459-23-000004 · wk-form4_1697151321.xml · nonDerivative · entry 1 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,329 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| September 20, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 6,484 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · derivative · entry 6 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 2,033,851 Underlying: Common stock · 6,484 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| September 20, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 6,484 | $4.23 | $27,396.20 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · nonDerivative · entry 4 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 F1 · kind: The exercises and sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $4.11 to $4.32, 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 20, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 6,484 | $0.05 | $324.20 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · nonDerivative · entry 3 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 6,484 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| September 19, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionStock Option (right to buy) · Derivative | 143,516 | $0.00 Strike: $0.05 | $0.00 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · derivative · entry 5 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 2,040,335 Underlying: Common stock · 143,516 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| September 19, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 143,516 | $4.37 | $627,164.92 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · nonDerivative · entry 2 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 F1 · kind: The exercises and sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $4.18 to $4.76, 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 19, 2023 Filed Sep 21, 2023 20:44 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | Exercise / conversionCommon stock | 143,516 | $0.05 | $7,175.80 |
DisclosureSEC source: 0001942459-23-000002 · wf-form4_169532904095825.xml · nonDerivative · entry 1 Bornstein Jonathan · CIK 0001942459 · President of Amprius Lab 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 143,516 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 automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 12, 2023. Read SEC document |
| September 14, 2022 Filed Sep 16, 2022 23:20 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 545,962 | Not disclosed Strike: $2.61 | Not disclosed |
DisclosureSEC source: 0000899243-22-031393 · doc4.xml · derivative · entry 2 Bornstein Jonathan · CIK 0001942459 · Chief Operating Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 545,962 Underlying: Common Stock · 545,962 shares Expires 2032-04-12 F1 · price: On September 14, 2022, the Issuer completed a business combination (the "Business Combination") pursuant to the Business Combination Agreement, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Amprius Technologies Operating, Inc. ("Legacy Amprius") At the effective time of the Business Combination (the "Effective Time"), each Legacy Amprius option was converted into an option to purchase a number of shares of Common Stock of the Issuer equal to the product (rounded down to the nearest whole number) of (i) the number of shares of Legacy Amprius common stock subject to the Legacy Amprius option immediately prior to the Effective Time multiplied by (ii) an exchange ratio of approximately 1.45590, at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Legacy Amprius option immediately prior to the Effective Time divided by (B) the Exchange Ratio F2 · derivative.exercise_date: 1/48 of the total number of shares issuable upon exercise of the option vested on February 1, 2023, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on January 1, 2027. Read SEC document |
| September 14, 2022 Filed Sep 16, 2022 23:20 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 2,183,851 | Not disclosed Strike: $0.05 | Not disclosed |
DisclosureSEC source: 0000899243-22-031393 · doc4.xml · derivative · entry 1 Bornstein Jonathan · CIK 0001942459 · Chief Operating Officer 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,183,851 Underlying: Common Stock · 2,183,851 shares Expires 2024-03-15 F1 · price: On September 14, 2022, the Issuer completed a business combination (the "Business Combination") pursuant to the Business Combination Agreement, by and among the Issuer, a wholly owned subsidiary of the Issuer, and Amprius Technologies Operating, Inc. ("Legacy Amprius") At the effective time of the Business Combination (the "Effective Time"), each Legacy Amprius option was converted into an option to purchase a number of shares of Common Stock of the Issuer equal to the product (rounded down to the nearest whole number) of (i) the number of shares of Legacy Amprius common stock subject to the Legacy Amprius option immediately prior to the Effective Time multiplied by (ii) an exchange ratio of approximately 1.45590, at an exercise price per share (rounded up to the nearest whole cent) equal to (A) the exercise price per share of such Legacy Amprius option immediately prior to the Effective Time divided by (B) the Exchange Ratio 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.