Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Amprius Technologies, Inc.AMPX · Entity 4742 | Director | 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 | 1,218,397 |
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 62,101 · Balance 1,218,397 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 911,688 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. |
| Common stockSEC Table I · non-derivative | IndirectSee Footnote | 56,406 |
Reported balance
Holding disclosure · report date 2026-08-21 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 56,406 F4: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees. |
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 911,688 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.
F4: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.
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, 2024 Filed Aug 22, 2024 21:02 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 33,333 | $1.04 | $34,666.32 |
DisclosureSEC source: 0001628280-24-038252 · wk-form4_1724360522.xml · nonDerivative · entry 1 Sun Kang · CIK 0001476220 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,350,753 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 1,242,211 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 |
| May 22, 2024 Filed May 25, 2024 01:06 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 15,611 | $1.36 | $21,168.52 |
DisclosureSEC source: 0001476220-24-000004 · wk-form4_1716599201.xml · nonDerivative · entry 2 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,384,086 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 1,330,941 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 01:06 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | SaleCommon stock | 19,973 | $1.33 | $26,516.15 |
DisclosureSEC source: 0001476220-24-000004 · wk-form4_1716599201.xml · nonDerivative · entry 1 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,399,697 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 23:28 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantCommon stock | 1,419,670 | $0.00 | $0.00 |
DisclosureSEC source: 0001628280-24-011980 · wk-form4_1710890923.xml · nonDerivative · entry 1 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,419,670 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 1,419,670 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 14, 2022 Filed Sep 16, 2022 23:23 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 545,962 | Not disclosed Strike: $2.61 | Not disclosed |
DisclosureSEC source: 0000899243-22-031399 · doc4.xml · derivative · entry 4 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 545,962 Underlying: Common Stock · 545,962 shares Expires 2032-04-13 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 (the "Exchange Ratio"), 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. F4 · derivative.exercise_date: 1/48 of the total number of shares issuable upon exercise of the option will vest 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 23:23 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 727,950 | Not disclosed Strike: $2.61 | Not disclosed |
DisclosureSEC source: 0000899243-22-031399 · doc4.xml · derivative · entry 3 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 727,950 Underlying: Common Stock · 727,950 shares Expires 2032-04-13 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 (the "Exchange Ratio"), 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. F3 · derivative.exercise_date: 1/48 of the total number of shares issuable upon exercise of the option vested on February 1, 2022, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on January 1, 2026. Read SEC document |
| September 14, 2022 Filed Sep 16, 2022 23:23 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 1,455,901 | Not disclosed Strike: $1.78 | Not disclosed |
DisclosureSEC source: 0000899243-22-031399 · doc4.xml · derivative · entry 2 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 1,455,901 Underlying: Common Stock · 1,455,901 shares Expires 2031-06-16 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 (the "Exchange Ratio"), 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 July 17, 2021, and 1/48 of the total number of shares issuable upon exercise of the option vest monthly thereafter until fully vested on June 17, 2025. Read SEC document |
| September 14, 2022 Filed Sep 16, 2022 23:23 UTC | Amprius Technologies, Inc. AMPX · Entity 4742 | GrantStock Option (right to buy) · Derivative | 727,950 | Not disclosed Strike: $0.05 | Not disclosed |
DisclosureSEC source: 0000899243-22-031399 · doc4.xml · derivative · entry 1 Sun Kang · CIK 0001476220 · Director · See Remarks 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 727,950 Underlying: Common Stock · 727,950 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 (the "Exchange Ratio"), 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.