Changes in Beneficial Ownership · 4
Amprius Technologies, Inc.
AMPXNYSEEQUITYCurrent
Changes in Beneficial Ownership
Structured filing — 4
wk-form4_1787692956.xml
Filing details
- Report period
- 2026-08-21
- Issuer
- Amprius Technologies, Inc.
- Issuer CIK
- 0001899287
- Trading symbol
- AMPX
Reporting owner 1
- Name
- Sun Kang
- Reporting owner CIK
- 0001476220
- Relationship
- Director
- Address
- C/O AMPRIUS TECHNOLOGIES, INC.,, 1180 PAGE AVENUE, FREMONT, CA, 94538
Non-derivative transactions
| Security | Transaction date | Code | Amount | A / D | Price (USD) | Owned after | Ownership |
|---|---|---|---|---|---|---|---|
| Common stock | 2026-08-21 | S · Form 4[F1] | 62,101 | D | 10.341[F2] | 1,218,397[F3] | D |
Table key
- S · Form 4
- Sale on the market or privately
- D
- Direct
Non-derivative holdings
| Security | Amount owned | Ownership | Nature of ownership |
|---|---|---|---|
| Common stock | 56,406 | I | See Footnote[F4] |
Table key
- I
- Indirect
Footnotes
- 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.↩ 1
- 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.↩ 1
- 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.↩ 1
- 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.↩ 1
Signature 1
- Signed
- /s/ Ricardo C. Rodriguez, attorney-in-fact on behalf of Kang Sun
- Date
- 2026-08-25
Company context
Amprius Technologies, Inc. is a leader in advanced lithium-ion battery technology, delivering high-energy and high-power silicon-anode batteries with up to twice the energy density, range, and flight time of conventional graphite-based cells. Headquartered in Fremont, California, Amprius operates an R&D lab and pilot manufacturing facility for silicon anodes and cells. To support scalable production, the Company employs a contract manufacturing strategy, enabling rapid capacity expansion with minimal capital investment. Committed to driving innovation in energy storage, Amprius powers next-generation applications in aerospace, defense, and mobility. For additional information, please visit amprius.com and the Company’s LinkedIn page.
Current securities
Recent company filings
- S-3ASR filingOct 9, 2026
- Entry into a Material Definitive AgreementSep 28, 2026
- Entry into a Material Definitive Agreement · Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementAug 13, 2026
- 10-Q filingAug 6, 2026
- Results of Operations and Financial ConditionAug 4, 2026