Amprius Technologies Inc.
Organization details
- Legal name
- Amprius Technologies Inc.
- Former names
- Kensington Capital Acquisition Corp. IV
- Ownership
- Public
- Status
- Active
- Sector (GICS)
- Industrials
- SIC code
- 3690 — Miscellaneous Electrical Machinery, Equipment & Supplies
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Fremont
- Headquarters state / province
- California
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- AMPX
- Primary stock exchange
- NYSE
Identifiers
- SEC CIK
- 0001899287
- EIN
- 98-1591811
Board of directors
-
Donald R. Dixon · DirectorSince 2023
-
Justin E. Mirro · DirectorSince 2023
-
Kang Sun · Director · Chief Executive OfficerSince 2024
-
Kathleen A. Bayless · DirectorSince 2023
-
Livingston Satterthwaite · DirectorSince 2024
-
Mary Gustanski · DirectorSince 2023
-
Steven Chu · DirectorSince 2023
-
Thomas M. Stepien · Director · Chief Executive OfficerSince 2025
-
Wen Hsuan Hsieh · DirectorSince 2023
Chief executives
Director election results
Annual meeting of June 11, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
71.4%
-
76.4%
Board connections
4 of this board's directors also sit on 7 other boards. 3 are in the same sector.
- via Wen Hsuan Hsieh
- via Wen Hsuan Hsieh
-
ERock Inc. Same sectorvia Livingston Satterthwaite
- via Mary Gustanski
-
IDEX Corporation Same sectorvia Livingston Satterthwaite
- via Livingston Satterthwaite
-
Veeco Instruments Inc. Same sectorvia Kathleen A. Bayless
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $85,689,134
- 37 sales by 6 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 25, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Gift | −5,000 | — | — |
| Aug 25, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Gift | −5,000 | — | — |
| Aug 25, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Gift | −5,000 | — | — |
| Aug 25, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Gift | −346 | — | — |
| Aug 25, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Grant or award | +346 | — | — |
| Aug 24, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Open-market sale | −8,000 | $10.03 | $80,240 |
| Aug 21, 2026 | Kang Sun Director | Open-market sale | −62,101 | $10.34 | $642,124 |
| Aug 21, 2026 | Stefan Constantin Ionel Officer (Chief Technology Officer) | Open-market sale | −29,681 | $10.34 | $306,902 |
| Aug 21, 2026 | Thomas M. Stepien Director, Officer (Chief Executive Officer) | Open-market sale | −23,529 | $10.34 | $243,290 |
| Jun 15, 2026 | Donald R. Dixon Director | Open-market sale | −85,000 | $17.17 | $1,459,450 |
| Jun 12, 2026 | Kathleen A. Bayless Director | Grant or award | +10,423 | — | — |
| Jun 12, 2026 | Livingston Satterthwaite Director | Grant or award | +10,423 | — | — |
| Jun 12, 2026 | Donald R. Dixon Director | Grant or award | +10,423 | — | — |
| Jun 12, 2026 | Steven Chu Director | Grant or award | +10,423 | — | — |
| Jun 9, 2026 | Donald R. Dixon Director | Open-market sale | −40,000 | $19.13 | $765,200 |
Peers
Compare boardsOrganizations in the same sector, closest in location and size first.
Questions about Amprius Technologies Inc.
Who is the CEO of Amprius Technologies Inc.?
Kang Sun is Amprius Technologies Inc.'s Chief Executive Officer.
How many directors are on Amprius Technologies Inc.'s board?
Amprius Technologies Inc.'s board has 9 directors: Donald R. Dixon, Justin E. Mirro, Kang Sun, Kathleen A. Bayless, Livingston Satterthwaite, Mary Gustanski, Steven Chu, Thomas M. Stepien and Wen Hsuan Hsieh.
Are Amprius Technologies Inc. insiders buying or selling shares?
Over the last 12 months, Amprius Technologies Inc. insiders made no open-market purchases and sold $85.7 million of shares in 37 sales on the open market, as reported to the SEC on Forms 4 and 5.
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