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Sun Kang

Disclosed activity across 1 company

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19901
SEC CIK
0001476220

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Amprius Technologies, Inc.AMPX · Entity 4742DirectorAugust 21, 2026August 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common stockSEC Table I · non-derivativeDirect1,218,397 Reported balance After 2026-08-21 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 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-derivativeIndirectSee Footnote56,406 Reported balance Holding disclosure · report date 2026-08-21 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 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

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
August 21, 2026 Filed Aug 25, 2026 21:22 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 62,101 $10.34 $642,186.44
Disclosure

SEC source: 0001476220-26-000034 · wk-form4_1787692956.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,218,397

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 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.

Read SEC document
May 27, 2026 Filed May 28, 2026 22:24 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 356 $17.19 $6,120.89
Disclosure

SEC source: 0001476220-26-000029 · wk-form4_1780007071.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,280,498

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 1,038,662 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 23:31 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 67,796 $14.79 $1,002,594.37
Disclosure

SEC source: 0001476220-26-000025 · wk-form4_1779838306.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,280,854

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 1,039,443 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 05, 2026 Filed May 7, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantCommon stock 6,250 $0.00 $0.00
Disclosure

SEC source: 0001476220-26-000017 · wk-form4_1778187113.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,348,650

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. 1/8th 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, 2028.

F2 · balance_after: Includes 1,165,635 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
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 187,495 $3.68 Strike: $3.68 $689,981.60
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,787,007

Underlying: Common stock · 187,495 shares

Expires 2031-12-15

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 transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 1,312,505 $1.78 Strike: $1.78 $2,336,258.90
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · derivative · entry 6

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,312,505 shares

Expires 2031-06-16

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 transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 249,037 $16.78 $4,179,563.07
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 4

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,342,400

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 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 $16.37 to $17.31, 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 1,159,385 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
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 1,250,963 $15.73 $19,681,150.69
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 3

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,591,437

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 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 $15.37 to $16.36, 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 1,159,385 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
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 187,495 $3.68 $689,981.60
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,842,400

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 transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · balance_after: Includes 1,159,385 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
April 01, 2026 Filed Apr 2, 2026 20:51 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 1,312,505 $1.78 $2,336,258.90
Disclosure

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,654,905

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 transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · balance_after: Includes 1,159,385 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 23, 2026 Filed Mar 24, 2026 23:11 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 65,046 $19.06 $1,239,705.21
Disclosure

SEC source: 0001476220-26-000013 · wk-form4_1774393890.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 56,406

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 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 $18.89 to $19.36, 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 · ownership.nature: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

Read SEC document
March 23, 2026 Filed Mar 24, 2026 23:11 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 152,823 $18.69 $2,855,696.42
Disclosure

SEC source: 0001476220-26-000013 · wk-form4_1774393890.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 121,452

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.89 to $18.88, 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 · ownership.nature: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

Read SEC document
February 23, 2026 Filed Feb 24, 2026 22:11 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 61,251 $10.16 $622,034.53
Disclosure

SEC source: 0001476220-26-000011 · wk-form4_1771971079.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,342,400

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 1,159,385 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 20, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 43,185 $0.00 Strike: $1.78 $0.00
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · derivative · entry 9

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,312,505

Underlying: Common stock · 43,185 shares

Expires 2031-06-16

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 August 18, 2025.

Read SEC document
January 20, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 43,185 $11.03 $476,274.41
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · nonDerivative · entry 5

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,403,651

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 August 18, 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 $11.00 to $11.10, 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 1,285,576 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 20, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 43,185 $1.78 $76,869.30
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · nonDerivative · entry 4

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,446,836

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 16, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 100,210 $0.00 Strike: $1.78 $0.00
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · derivative · entry 8

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,355,690

Underlying: Common stock · 100,210 shares

Expires 2031-06-16

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 August 18, 2025.

Read SEC document
January 16, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 850,338 $0.00 Strike: $2.50 $0.00
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 850,338 shares

Expires 2030-09-17

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.

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 August 18, 2025.

Read SEC document
January 16, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 950,548 $11.07 $10,518,669.11
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · nonDerivative · entry 3

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,403,651

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 August 18, 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 $11.00 to $11.20, 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 1,285,576 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 16, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 100,210 $1.78 $178,373.80
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,354,199

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 16, 2026 Filed Jan 20, 2026 22:33 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 850,338 $2.50 $2,125,845.00
Disclosure

SEC source: 0001476220-26-000005 · wk-form4_1768948377.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,253,989

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 117,201 $0.00 Strike: $2.50 $0.00
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · derivative · entry 8

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 850,338

Underlying: Common stock · 117,201 shares

Expires 2030-09-17

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.

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 August 18, 2025.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 208,264 $0.00 Strike: $2.44 $0.00
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 208,264 shares

Expires 2029-01-02

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 August 18, 2025.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 180,802 $0.00 Strike: $0.62 $0.00
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · derivative · entry 6

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 180,802 shares

Expires 2027-12-12

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 August 18, 2025.

Read SEC document
January 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 506,267 $10.10 $5,111,474.14
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · nonDerivative · entry 4

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,403,651

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 August 18, 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 $10.00 to $10.25, 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 1,285,576 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 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 117,201 $2.50 $293,002.50
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · nonDerivative · entry 3

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,909,918

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 208,264 $2.44 $508,164.16
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,792,717

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 12, 2026 Filed Jan 14, 2026 23:04 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 180,802 $0.62 $112,097.24
Disclosure

SEC source: 0001476220-26-000003 · wk-form4_1768431887.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,584,453

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 August 18, 2025.

F2 · balance_after: Includes 1,285,576 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 23:54 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 68,655 $10.08 $692,131.65
Disclosure

SEC source: 0001476220-25-000023 · wk-form4_1764114867.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,403,651

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 1,285,576 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 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 41,653 $0.00 Strike: $0.62 $0.00
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · derivative · entry 10

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 41,653 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 August 18, 2025.

Read SEC document
November 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 27,463 $0.00 Strike: $0.62 $0.00
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · derivative · entry 9

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 180,802

Underlying: Common stock · 27,463 shares

Expires 2027-12-12

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 August 18, 2025.

Read SEC document
November 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 727,950 $0.00 Strike: $0.05 $0.00
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · derivative · entry 8

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 727,950 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 August 18, 2025.

Read SEC document
November 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionStock Option (right to buy) · Derivative 202,934 $0.00 Strike: $0.98 $0.00
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 202,934 shares

Expires 2026-12-14

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 August 18, 2025.

Read SEC document
November 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 1,000,000 $10.60 $10,595,300.00
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · nonDerivative · entry 5

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,472,306

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 August 18, 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 $10.19 to $11.30, 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 1,411,769 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 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 41,653 $0.62 $25,824.86
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · nonDerivative · entry 4

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,472,306

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 August 18, 2025.

F2 · balance_after: Includes 1,411,769 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 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 27,463 $0.62 $17,027.06
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · nonDerivative · entry 3

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,430,653

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 August 18, 2025.

F2 · balance_after: Includes 1,411,769 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 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 727,950 $0.05 $36,397.50
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,403,190

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 August 18, 2025.

F2 · balance_after: Includes 1,411,769 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 17, 2025 Filed Nov 19, 2025 22:49 UTC Amprius Technologies, Inc. AMPX · Entity 4742 Exercise / conversionCommon stock 202,934 $0.98 $198,875.32
Disclosure

SEC source: 0001476220-25-000018 · wk-form4_1763592590.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,675,240

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 August 18, 2025.

F2 · balance_after: Includes 1,411,769 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 25, 2025 23:59 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 65,654 $6.82 $447,510.79
Disclosure

SEC source: 0001476220-25-000016 · wk-form4_1756166369.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,472,306

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 1,411,769 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 · balance_after: On June 10, 2025, the reporting person transferred 274,275 shares of the issuer's common stock, which were previously held directly by the reporting person, to the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

Read SEC document
May 21, 2025 Filed May 23, 2025 21:48 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 69,786 $2.43 $169,719.55
Disclosure

SEC source: 0001476220-25-000008 · wk-form4_1748036924.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,812,235

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 1,537,960 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 21:03 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantCommon stock 599,400 $0.00 $0.00
Disclosure

SEC source: 0001476220-25-000004 · wk-form4_1742590987.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,882,021

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 1,664,152 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 00:42 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 34,353 $3.13 $107,634.82
Disclosure

SEC source: 0001476220-25-000002 · wk-form4_1740444122.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,282,621

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 $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 1,064,752 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 21:29 UTC Amprius Technologies, Inc. AMPX · Entity 4742 SaleCommon stock 33,779 $1.96 $66,362.22
Disclosure

SEC source: 0001476220-24-000007 · wk-form4_1732310949.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,316,974

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 1,153,482 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 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 967,539 Not disclosed Strike: $2.50 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 967,539

Underlying: Common stock · 967,539 shares

Expires 2030-09-17

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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.

F9 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 1,393,713 shares of Amprius Holdings' Class A common stock at an exercise price of $1.73 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 1,974,502 Not disclosed Strike: $3.68 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 6

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,974,502

Underlying: Common stock · 1,974,502 shares

Expires 2031-12-15

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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.

F8 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 2,844,212 shares of Amprius Holdings' Class A common stock at an exercise price of $2.55 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 1,171,476 Not disclosed Strike: $0.78 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 5

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,171,476

Underlying: Common stock · 1,171,476 shares

Expires 2034-09-26

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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 1,687,476 shares of Amprius Holdings' Class A common stock at an exercise price of $0.54 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 202,934 Not disclosed Strike: $0.98 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 4

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 202,934

Underlying: Common stock · 202,934 shares

Expires 2026-12-14

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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 292,321 shares of Amprius Holdings' Class A common stock at an exercise price of $0.68 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 41,653 Not disclosed Strike: $0.62 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 3

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,653

Underlying: Common stock · 41,653 shares

Expires 2027-03-15

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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 60,000 shares of Amprius Holdings' Class A common stock at an exercise price of $0.43 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 208,264 Not disclosed Strike: $2.44 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 2

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,264

Underlying: Common stock · 208,264 shares

Expires 2029-01-02

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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.

F4 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 300,000 shares of Amprius Holdings' Class A common stock at an exercise price of $1.69 per share.

F2 · derivative.exercise_date: The options are fully vested.

Read SEC document
October 23, 2024 Filed Oct 25, 2024 22:32 UTC Amprius Technologies, Inc. AMPX · Entity 4742 GrantStock Option (right to buy) · Derivative 208,265 Not disclosed Strike: $0.62 Not disclosed
Disclosure

SEC source: 0001628280-24-043854 · wk-form4_1729895543.xml · derivative · entry 1

Sun Kang · CIK 0001476220 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,265

Underlying: Common stock · 208,265 shares

Expires 2027-12-12

F1 · kind: On October 23, 2024, Amprius, Inc. ("Amprius Holdings") voluntarily liquidated and dissolved and distributed to its stockholders on a pro rata basis an aggregate of 57,195,926 shares of the Issuer's common stock (the "Liquidating Distribution"). 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.

F3 · price: Received in connection with the Option Assumption in exchange for stock options to acquire 300,000 shares of Amprius Holdings' Class A common stock at an exercise price of $0.43 per share.

F2 · derivative.exercise_date: The options are fully vested.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.