AMPX on NYSE
Amprius Technologies, Inc.
American miscellaneous electrical machinery company based in Fremont1
In its 2026 annual report the company says: “Amprius Technologies, Inc. develops, manufactures and markets lithium-ion batteries for mobility applications, including aviation, ground and marine vehicles. Our disruptive silicon anode technology is intended to enable batteries with high energy density, high power density and fast charging capabilities over a wide range of operating temperatures.”4 Its shares trade on NYSE under the symbol AMPX.1
Price unavailable
Last updated Oct 21, 2026.
Overview
Compare with Dragonfly Energy Holdings Corp., Blink or Gauzy Ltd., or pick any stock.
- TickerAMPX on NYSE1
- IndustryMiscellaneous Electrical Machinery, Equipment & Supplies1
- HeadquartersFremont, California1
- Incorporated inDE2
- Business address1180 Page Avenue, Fremont, Ca 945382
- Filer category, Emerging growth company2
- Legal formCorporation
See how the biggest companies compare on our leaderboards
Amprius Technologies, Inc. develops, manufactures and markets lithium-ion batteries for mobility applications, including aviation, ground and marine vehicles. Our disruptive silicon anode technology is intended to enable batteries with high energy density, high power density and fast charging capabilities over a wide range of operating temperatures. This results in our batteries providing superior performance compared to conventional graphite lithium-ion batteries. Our silicon anodes are a direct drop-in replacement of the graphite anode in traditional lithium-ion batteries, and our manufacturing processes leverage the manufacturing processes for conventional lithium-ion batteries and the related supply chain.4 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2025
What sells
Revenue by product, business segment and region, as the company reports it to the SEC.
Products and services
Sale Of Battery Products brought in 100% of the revenue Amprius Technologies, Inc. broke down this way in fiscal 2025.
Products and services by year
| Products and services | 2024 | 2025 |
|---|---|---|
| Sale Of Battery Products | $22.1M | $71.6M |
| Customized Design Services | $1.5M | $325.0K |
Regions
EMEA brought in 50% of the revenue Amprius Technologies, Inc. broke down this way in fiscal 2025.
Regions by year
| Regions | 2024 | 2025 |
|---|---|---|
| EMEA | $10.7M | $52.6M |
| UA | $6.4M | $33.0M |
| North America | $8.2M | $11.8M |
| Asia Pacific | $5.3M | $8.6M |
Where the money goes
Where each dollar of revenue went, fiscal 2025
- Cost of revenue67¢$64.7M
- Research and development10¢$9.4M
- Selling, general and admin24¢$23.0M
Out of $71.9M in revenue.5 The company lost money this year.
Financial statements
Every line of the income statement as filed: the last 2 fiscal years, latest first.5
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Revenue | $73.0M | $24.2M |
| Cost of revenue | $64.7M | $42.5M |
| Gross profit (loss) | $8.3M | -$18.3M |
| Research and development | $9.4M | $7.3M |
| Selling, general and administrative | $23.0M | $18.7M |
| Impairment and other | $22.5M | $1.9M |
| Total operating expenses | $54.9M | $27.9M |
| Loss from operations | -$46.6M | -$46.3M |
| Interest income and other, net | $2.6M | $1.6M |
| Total other income, net | $2.6M | $1.6M |
| Net loss | -$44.0M | -$44.7M |
| Weighted-average common shares outstanding, basic (in shares) | 124.6M shares | 101.9M shares |
| Weighted-average common shares outstanding, diluted (in shares) | 124.6M shares | 101.9M shares |
| Net loss per share of common stock, basic (in dollars per share) | -$0.35 | -$0.45 |
| Net loss per share of common stock, diluted (in dollars per share) | -$0.35 | -$0.45 |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 3 fiscal years (annual) or 3 quarters (quarterly), latest first.5
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $90.5M | $55.2M | |
| Accounts receivable, net | $23.7M | $5.6M | $1.3M |
| Inventories | $6.7M | $6.6M | |
| Prepaid expenses and other current assets | $5.5M | $1.5M | |
| Total current assets | $126.4M | $68.8M | |
| Property, plant and equipment, net | $9.7M | $17.5M | |
| Operating lease right-of-use assets, net | $19.5M | $33.5M | |
| Other assets | $1.3M | $1.4M | |
| Total assets | $156.9M | $121.1M | |
| Accounts payable | $6.7M | $7.4M | |
| Accrued and other current liabilities | $3.7M | $4.8M | |
| Deferred revenue | $100.0K | $1.6M | |
| Deferred grant | $2.7M | $0 | |
| Operating lease liabilities | $4.7M | $3.3M | |
| Total current liabilities | $17.9M | $17.2M | |
| Operating lease liabilities | $35.2M | $34.4M | |
| Total liabilities | $53.1M | $51.7M | |
| Preferred stock; $0.0001 par value; 50,000,000 shares authorized; no shares issued and outstanding | $0 | $0 | |
| Common stock; $0.0001 par value; 950,000,000 shares authorized; 134,536,592 and 116,934,314 shares issued and outstanding at December 31, 2025 and 2024, respectively | $13.0K | $12.0K | |
| Additional paid-in capital | $322.2M | $243.8M | |
| Accumulated other comprehensive income | $4.0K | $0 | |
| Accumulated deficit | -$218.4M | -$174.3M | |
| Total stockholders equity | $103.8M | $69.5M | $59.8M |
| Total liabilities and stockholders equity | $156.9M | $121.1M | |
| Preferred stock, par value (in dollars per share) | $0.00 | $0.00 | |
| Preferred stock, shares authorized (in shares) | 50.0M shares | 50.0M shares | |
| Preferred stock, shares issued (in shares) | 0 shares | 0 shares | |
| Preferred stock, shares outstanding (in shares) | 0 shares | 0 shares | |
| Common stock, par value (in dollars per share) | $0.00 | $0.00 | |
| Common stock, authorized (in shares) | 950.0M shares | 950.0M shares | |
| Common stock, issued (in shares) | 134.5M shares | 116.9M shares | |
| Common stock, outstanding (in shares) | 134.5M shares | 116.9M shares |
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $90.5M | $55.2M | |
| Accounts receivable, net | $23.7M | $5.6M | $1.3M |
| Inventories | $6.7M | $6.6M | |
| Prepaid expenses and other current assets | $5.5M | $1.5M | |
| Total current assets | $126.4M | $68.8M | |
| Property, plant and equipment, net | $9.7M | $17.5M | |
| Operating lease right-of-use assets, net | $19.5M | $33.5M | |
| Other assets | $1.3M | $1.4M | |
| Total assets | $156.9M | $121.1M | |
| Accounts payable | $6.7M | $7.4M | |
| Accrued and other current liabilities | $3.7M | $4.8M | |
| Deferred revenue | $100.0K | $1.6M | |
| Deferred grant | $2.7M | $0 | |
| Operating lease liabilities | $4.7M | $3.3M | |
| Total current liabilities | $17.9M | $17.2M | |
| Operating lease liabilities | $35.2M | $34.4M | |
| Total liabilities | $53.1M | $51.7M | |
| Preferred stock; $0.0001 par value; 50,000,000 shares authorized; no shares issued and outstanding | $0 | $0 | |
| Common stock; $0.0001 par value; 950,000,000 shares authorized; 134,536,592 and 116,934,314 shares issued and outstanding at December 31, 2025 and 2024, respectively | $13.0K | $12.0K | |
| Additional paid-in capital | $322.2M | $243.8M | |
| Accumulated other comprehensive income | $4.0K | $0 | |
| Accumulated deficit | -$218.4M | -$174.3M | |
| Total stockholders equity | $103.8M | $69.5M | $59.8M |
| Total liabilities and stockholders equity | $156.9M | $121.1M | |
| Preferred stock, par value (in dollars per share) | $0.00 | $0.00 | |
| Preferred stock, shares authorized (in shares) | 50.0M shares | 50.0M shares | |
| Preferred stock, shares issued (in shares) | 0 shares | 0 shares | |
| Preferred stock, shares outstanding (in shares) | 0 shares | 0 shares | |
| Common stock, par value (in dollars per share) | $0.00 | $0.00 | |
| Common stock, authorized (in shares) | 950.0M shares | 950.0M shares | |
| Common stock, issued (in shares) | 134.5M shares | 116.9M shares | |
| Common stock, outstanding (in shares) | 134.5M shares | 116.9M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 2 fiscal years, latest first.5
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Net loss | -$44.0M | -$44.7M |
| Stock-based compensation | $7.4M | $7.3M |
| Depreciation and amortization | $4.4M | $3.8M |
| Amortization of deferred costs | $0 | $1.2M |
| Non-cash operating lease expense | $5.1M | $5.1M |
| Impairment and other | $22.5M | $1.9M |
| Other non-cash items | $454.0K | $0 |
| Accounts receivable, net | -$18.6M | -$4.3M |
| Inventories | -$161.0K | -$5.8M |
| Deferred costs | $0 | -$467.0K |
| Prepaid expenses and other current assets | -$3.8M | $533.0K |
| Other assets | $28.0K | -$17.0K |
| Accounts payable | -$998.0K | $5.9M |
| Accrued and other current liabilities | -$1.2M | -$747.0K |
| Deferred revenue | -$1.5M | -$1.8M |
| Deferred grant | $2.7M | $0 |
| Operating lease liabilities | -$3.5M | -$1.3M |
| Net cash used in operating activities | -$31.1M | -$33.4M |
| Purchase of property, plant and equipment | -$4.4M | -$3.2M |
| Net cash used in investing activities | -$4.4M | -$3.2M |
| Proceeds from issuance of common stock upon exercise of stock warrants | $2.3M | $14.4M |
| Payment of equity financing costs | $0 | -$756.0K |
| Proceeds from exercise of stock options | $5.1M | $109.0K |
| Net cash provided by financing activities | $71.0M | $47.2M |
| Net increase in cash, cash equivalents and restricted cash equivalents | $35.5M | $10.6M |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash equivalents | $4.0K | $0 |
| Unpaid purchases of property, plant and equipment | $322.0K | $48.0K |
| Increase in fair value of modified stock warrants | $0 | $727.0K |
| Cancellation and retirement of common stock | $0 | $1.0K |
No quarter-by-quarter statement was filed.
Corporate structure
Amprius Technologies, Inc. sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of Amprius Technologies, Inc.
- JANE STREET GROUP, LLC Filed SCHEDULE 13G/A on Amprius Technologies, Inc., latest Aug 10, 2026 (2 filings since Apr 28, 2026)
- BlackRock Filed SCHEDULE 13G/A on Amprius Technologies, Inc., latest Jul 27, 2026 (2 filings since Oct 17, 2025)
- VANGUARD GROUP INC Filed SCHEDULE 13G/A on Amprius Technologies, Inc., latest Mar 26, 2026 (2 filings since Oct 30, 2025)
- SAIF Partners IV L.P. Filed SCHEDULE 13G/A on Amprius Technologies, Inc., latest Aug 14, 2025 (3 filings since Oct 28, 2024)
- Alan E. Salzman Filed SCHEDULE 13G/A on Amprius Technologies, Inc., latest Aug 6, 2025 (2 filings since Oct 25, 2024)
- Donald R. Dixon Filed SC 13D on Amprius Technologies, Inc., latest Oct 28, 2024
- Amprius, Inc. Filed SC 13D/A on Amprius Technologies, Inc., latest Oct 25, 2024 (3 filings since Sep 19, 2022)
- Kang Sun Filed SC 13D on Amprius Technologies, Inc., latest Oct 25, 2024
- Wealthspring Capital LLC Filed SC 13G/A on Amprius Technologies, Inc., latest Oct 7, 2022 (2 filings since Jun 1, 2022)
- Kensington Capital Sponsor IV LLC Filed SC 13D/A on Amprius Technologies, Inc., latest Sep 23, 2022
- Kensington Capital Partners, LLC Filed SC 13D/A on Amprius Technologies, Inc., latest May 13, 2022 (2 filings since Mar 18, 2022)
- Dryden Capital, LLC Filed SC 13G on Amprius Technologies, Inc., latest Mar 11, 2022
- Amprius Technologies, Inc. Fremont, California
- Amprius Technologies Operating, Inc. Subsidiary · Delaware, United States
Built from subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Amprius Technologies, Inc. reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Property and equipment
| Item | Latest | A year before | Change |
|---|---|---|---|
| Property and equipment, before depreciation | $19.6M5 Dec 31, 2025 | $29.5M5 Dec 31, 2024 | −33.5% |
| Accumulated depreciation | $9.9M5 Dec 31, 2025 | $12.0M5 Dec 31, 2024 | −17.3% |
| Property and equipment, net | $9.7M5 Dec 31, 2025 | $17.5M5 Dec 31, 2024 | −44.6% |
| Operating-lease assets (leased space) | $19.5M5 Dec 31, 2025 | $33.5M5 Dec 31, 2024 | −41.8% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $90.5M5 Dec 31, 2025 | $55.2M5 Dec 31, 2024 | +64.0% |
Inventory
| Item | Latest | A year before | Change |
|---|---|---|---|
| Inventory, total | $6.7M5 Dec 31, 2025 | $6.6M5 Dec 31, 2024 | +2.4% |
| Raw materials | $404.0K5 Dec 31, 2025 | $146.0K5 Dec 31, 2024 | +176.7% |
| Work in process | $353.0K5 Dec 31, 2025 | $117.0K5 Dec 31, 2024 | +201.7% |
| Finished goods | $6.0M5 Dec 31, 2025 | $6.3M5 Dec 31, 2024 | −5.3% |
Properties, in its own words
We lease our corporate headquarters and manufacturing facilities, which consisted of the following as of December 31, 2025:
•Approximately 51,000 square feet of leased space located in Fremont, California. This leased property, which we use for our corporate headquarters, research and development, and manufacturing of our batteries, expires in June 2027 with an option to extend for an additional 5-year period up to June 2032.
The rest of Item 2
•Approximately 774,000 square feet of leased space located in Brighton, Colorado, which expires in May 2039 with an option to extend for two additional 5-year periods up to May 2049. When we signed the lease agreement in April 2023, we announced a plan to build a GWh-scale manufacturing facility in those premises. As of December 31, 2025, due to larger industry dynamics, particularly our ability to access global contract manufacturing to rapidly service the demand from our customers, we recorded $19.1 million in impairment charges to the associated right-of-use asset and construction-in-progress to reflect our intention to terminate the lease of the Brighton facility. On January 30, 2026, we entered into an agreement with the lessor to terminate this lease in exchange for a one-time payment of $20.0 million. The termination of the lease will be reflected in our financial results in our fiscal first quarter of 2026.
We believe that our facilities are adequate to meet our needs for the immediate future, and that, should it be needed, suitable additional space will be available to accommodate any such expansion of our operations.
Item 2 of the 10-K filed Mar 6, 2026.4
Leadership
Who has led Amprius Technologies, Inc., and when. Pick a name to see everywhere that person has worked.
Chief executive
Chief financial officer
Chief operating officer
- Chief executive officerThomas M. Stepien Mar 6, 2026 to now11
- Chief executive officerKang Sun Aug 22, 2024 to Mar 6, 202612
- PresidentThomas M. Stepien May 6, 2025 to now13
- PresidentJonathan Bornstein Sep 21, 2023 to May 6, 202514
- Chief financial officerRicardo C. Rodriguez Oct 8, 2025 to now15
- Chief financial officerDaniel Elliot Huber Mar 1, 2022 to Mar 1, 202216
- Chief financial officerSandra Wallach Sep 16, 2022 to Oct 8, 202517
- Chief operating officerRobert J. Remenar Mar 1, 2022 to Mar 1, 202218
- Chief operating officerJonathan Bornstein Sep 16, 2022 to Sep 16, 202219
Board members and other officers (18)
- OfficerJustin E. Mirro Mar 1, 2022 to Mar 1, 202220
- Chief Technology OfficerSimon Boag Mar 1, 2022 to Mar 1, 202221
- Chief Technology OfficerConstantin Ionel Stefan Sep 16, 2022 to now22
- OfficerKang Sun Sep 16, 2022 to May 24, 202423
- Board memberThomas M. Stepien May 6, 2025 to now13
- Board memberLivingston Satterthwaite Aug 14, 2024 to now24
- Board memberKathleen A. Bayless Apr 27, 2023 to now25
- Board memberMary Gustanski Jun 15, 2023 to Jun 7, 202426
- Board memberAnders Pettersson Mar 1, 2022 to Mar 1, 202227
- Board memberDonald L. Runkle Mar 1, 2022 to Mar 1, 202228
- Board memberJustin E. Mirro Mar 1, 2022 to Sep 5, 202420
- Board memberMatthew Simoncini Mar 1, 2022 to Mar 1, 202229
- Board memberMitchell I. Quain Mar 1, 2022 to Mar 1, 202230
- Board memberNicole Nason Mar 1, 2022 to Mar 1, 202231
- Board memberThomas William Lasorda Mar 16, 2022 to Mar 16, 202232
- Board memberDonald R. Dixon Sep 16, 2022 to now33
- Board memberKang Sun Sep 16, 2022 to now23
- Board memberWen Hsuan Hsieh Sep 16, 2022 to now34
Named in SEC Form D filings
People the company listed in its private-offering notices.
- DirectorSteven R. Chu named Oct 5, 202235
Subsidiaries and ownership
Subsidiaries (Exhibit 21)
- Amprius Technologies Operating, Inc. Delaware, USA3
The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.
Former names
- Kensington Capital Acquisition Corp. IVDec 15, 2021 to Sep 14, 20222
Timeline
- Sep 28, 20268-K Entered a material agreement36
- Aug 13, 20268-K Entered a material agreement; New debt or obligation37
- Aug 4, 20268-K Results of operations38
- Jun 17, 20268-K Shareholder vote39
- May 19, 20268-K Unregistered sale of shares40
- May 7, 20268-K Entered a material agreement; Unregistered sale of shares41
- May 6, 20268-K Results of operations42
- Apr 21, 20268-K Change of auditor43
- Mar 6, 2026New chief executive Thomas M. Stepien becomes CEO11
- Mar 4, 20268-K Results of operations44
- Feb 3, 20268-K Ended a material agreement45
- Jan 12, 20268-K Other events46
- Dec 22, 20258-K Executive or director change47
- Aug 22, 2024New chief executive Kang Sun becomes CEO12
Calendar
Coming up
- Nov 5, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported ($0.03) a share, on Nov 6, 2025.48
When it reported results
- Aug 4, 2026Reported quarterly or annual results38
- May 6, 2026Reported quarterly or annual results42
- Mar 4, 2026Reported quarterly or annual results44
- Nov 6, 2025Reported quarterly or annual results49
- Aug 7, 2025Reported quarterly or annual results50
- May 8, 2025Reported quarterly or annual results51
- Mar 20, 2025Reported quarterly or annual results52
- Mar 4, 2025Reported quarterly or annual results53
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
501 filings to the SEC since October 2021: 4 annual reports, 14 quarterly reports, 65 major events, 152 insider forms, 22 large holders, 1 private raises, 243 other. The latest 20:
- Oct 9, 2026S-3ASR EDGAR
- Sep 28, 20268-K EDGAR
- Aug 25, 20264 EDGAR
- Aug 25, 2026144 EDGAR
- Aug 25, 20264 EDGAR
- Aug 25, 2026144 EDGAR
- Aug 25, 20264 EDGAR
- Aug 25, 2026144 EDGAR
- Aug 24, 2026144 EDGAR
- Aug 13, 20268-K EDGAR
- Aug 10, 2026SCHEDULE 13G/A EDGAR
- Aug 6, 202610-Q EDGAR
- Aug 4, 20268-K EDGAR
- Jul 27, 2026SCHEDULE 13G/A EDGAR
- Jun 17, 20268-K EDGAR
- Jun 16, 20264 EDGAR
- Jun 16, 20264 EDGAR
- Jun 16, 20264 EDGAR
- Jun 16, 20264 EDGAR
- Jun 11, 20264 EDGAR
The 501 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Insider trades
100 open-market trades by officers, directors and large owners since October 2021: 0 buys and 100 sales. Grants, option exercises and gifts are left out.
| Date | Who | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 24, 2026 | Stepien Thomas MChief Executive Officer | Sale | 8,000 | $10.03 | $80.2K | Form 4 |
| Aug 21, 2026 | Stepien Thomas MChief Executive Officer | Sale | 23,529 | $10.34 | $243.3K | Form 4 |
| Aug 21, 2026 | Stefan Constantin IonelChief Technology Officer | Sale | 29,681 | $10.34 | $306.9K | Form 4 |
| Aug 21, 2026 | Sun KangDirector | Sale | 62,101 | $10.34 | $642.1K | Form 4 |
| Jun 15, 2026 | DIXON DONALD RDirector | Sale | 85,000 | $17.17 | $1.5M | Form 4 |
| Jun 9, 2026 | DIXON DONALD RDirector | Sale | 40,000 | $19.13 | $765.2K | Form 4 |
| Jun 4, 2026 | Stepien Thomas MChief Executive Officer | Sale | 2,000 | $20.97 | $41.9K | Form 4 |
| May 27, 2026 | Stepien Thomas MChief Executive Officer | Sale | 4,375 | $17.19 | $75.2K | Form 4 |
| May 27, 2026 | Stefan Constantin IonelChief Technology Officer | Sale | 3,208 | $17.19 | $55.1K | Form 4 |
| May 27, 2026 | Sun KangDirector | Sale | 356 | $17.19 | $6.1K | Form 4 |
| May 26, 2026 | DIXON DONALD RDirector | Sale | 17,895 | $17.90 | $320.3K | Form 4 |
| May 21, 2026 | Stepien Thomas MChief Executive Officer | Sale | 60,702 | $14.79 | $897.8K | Form 4 |
| May 21, 2026 | Stefan Constantin IonelChief Technology Officer | Sale | 28,812 | $14.79 | $426.1K | Form 4 |
| May 21, 2026 | Sun KangDirector | Sale | 67,796 | $14.79 | $1.0M | Form 4 |
| Apr 1, 2026 | Sun KangDirector | Sale | 1,500,000 | $15.90 | $23.9M | Form 4 |
| Mar 23, 2026 | Sun KangDirector | Sale | 217,869 | $18.80 | $4.1M | Form 4 |
| Mar 12, 2026 | HSIEH Wen HsuanDirector | Sale | 413,146 | $18.45 | $7.6M | Form 4 |
| Mar 12, 2026 | Chu StevenDirector | Sale | 155,565 | $18.50 | $2.9M | Form 4 |
| Mar 10, 2026 | Chu StevenDirector | Sale | 166,632 | $17.92 | $3.0M | Form 4 |
| Feb 23, 2026 | Stefan Constantin IonelChief Technology Officer | Sale | 25,366 | $10.16 | $257.7K | Form 4 |
All 100 trades can be filtered by person here when JavaScript is on.
From Forms 4 filed with the SEC.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- JANE STREET GROUP, LLCSCHEDULE 13G/A, 2 filings Apr 28, 2026 to Aug 10, 202654
- BlackRockSCHEDULE 13G/A, 2 filings Oct 17, 2025 to Jul 27, 202655
- VANGUARD GROUP INCSCHEDULE 13G/A, 2 filings Oct 30, 2025 to Mar 26, 202656
- SAIF Partners IV L.P.SCHEDULE 13G/A, 3 filings Oct 28, 2024 to Aug 14, 202557
- Alan E. SalzmanSCHEDULE 13G/A, 2 filings Oct 25, 2024 to Aug 6, 202558
- Donald R. DixonSC 13D, 1 filing Oct 28, 202459
- Amprius, Inc.SC 13D/A, 3 filings Sep 19, 2022 to Oct 25, 202460
- Kang SunSC 13D, 1 filing Oct 25, 202461
- Wealthspring Capital LLCSC 13G/A, 2 filings Jun 1, 2022 to Oct 7, 202262
- Kensington Capital Sponsor IV LLCSC 13D/A, 1 filing Sep 23, 202263
- Kensington Capital Partners, LLCSC 13D/A, 2 filings Mar 18, 2022 to May 13, 202264
- Dryden Capital, LLCSC 13G, 1 filing Mar 11, 202265
Executive pay
What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.
| Year | Executive | Age | Salary | Total pay |
|---|---|---|---|---|
| 2025 | Thomas M. Stepien | 65 | $319.7K | $3.4M66 |
| 2025 | Ricardo C. Rodriguez | 41 | $109.3K | $3.0M66 |
| 2025 | Kang Sun | 71 | $633.0K | $2.6M66 |
| 2024 | Executive Advisor | $624.0K | $5.7M66 |
Money raised
Private offerings the company reported to the SEC on Form D.
- Sep 27, 2022Raised $1 million in a private offering of equity Form D: $202 million offered in all Form D
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.
| Fund | Shares | Value | Share of the fund | Change |
|---|---|---|---|---|
| BlackRock, Inc. | 11,335,092 | $157.1M | 0.0% | +2,109,481 |
| Vanguard Capital Management LLC | 5,562,985 | $77.1M | 0.0% | +654,110 |
| Morgan Stanley | 5,105,505 | $70.8M | 0.0% | +1,943,338 |
| Two Sigma Investments, LP | 4,318,630 | $59.9M | 0.0% | +812,555 |
| UBS Group AG | 4,072,269 | $56.4M | 0.0% | +1,760,715 |
| Geode Capital Management, LLC | 3,520,655 | $48.8M | 0.0% | +706,125 |
| Jane Street Group, LLC | 3,401,071 | $47.1M | 0.0% | −759,585 |
| State Street Corp | 3,240,285 | $44.9M | 0.0% | +527,655 |
| Goldman Sachs Group Inc | 2,542,294 | $35.2M | 0.0% | +316,113 |
| Jupiter Asset Management Ltd | 2,133,397 | $29.6M | 0.1% | New |
| LMR Partners LLP | 1,750,850 | $24.3M | 0.2% | New |
| Citadel Advisors LLC | 1,676,344 | $23.2M | 0.0% | +237,684 |
| Vanguard Portfolio Management LLC | 1,457,629 | $20.2M | 0.0% | +384,233 |
| Hood River Capital Management LLC | 1,412,516 | $19.6M | 0.1% | +463,369 |
| Renaissance Technologies LLC | 1,408,925 | $19.5M | 0.0% | +1,049,400 |
| Driehaus Capital Management LLC | 1,345,269 | $18.6M | 0.1% | −2,448,909 |
| Baird Financial Group, Inc. | 1,324,909 | $18.4M | 0.0% | −260,189 |
| Healthcare Of Ontario Pension Plan Trust Fund | 1,248,700 | $17.3M | 0.0% | New |
| Northern Trust Corp | 1,229,628 | $17.0M | 0.0% | +207,003 |
| Millennium Management LLC | 1,208,017 | $16.7M | 0.0% | +172,779 |
| Deutsche Bank Ag\ | 1,196,197 | $16.6M | 0.0% | +321,166 |
| Barclays PLC | 1,180,878 | $16.4M | 0.0% | +125,951 |
| Charles Schwab Investment Management Inc | 1,176,959 | $16.3M | 0.0% | +137,565 |
| Point72 Asset Management, L.P. | 1,139,811 | $15.8M | 0.0% | +1,111,890 |
| Qube Research & Technologies Ltd | 1,136,175 | $15.7M | 0.0% | −91,395 |
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How Amprius Technologies, Inc. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARAmprius Technologies, Inc.1
- CIK0001899287
- Employer ID (EIN)98-15918114
- Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; not a shell company4
- Incorporated inDelaware4
- Fiscal year endsDecember 311
- Industry code (SIC)3690 Miscellaneous Electrical Machinery, Equipment & Supplies1
- SEC reviewing officeOffice of Manufacturing, Division of Corporation Finance1
- Business address1180 Page Avenue, Fremont, CA 945381
- Phone(800) 425-88031
- Shares outstanding146,080,618 as of Jul 31, 202610
- Public float$518.4M as of Jun 30, 20254
- AuditorBDO USA, P.C., Houston, Texas PCAOB ID 243; no auditor attestation of internal control over financial reporting4
- On EDGAR sinceDec 15, 20211
- Filings501 in all: 4 (124), 144 (72), 8-K (63), 424B3 (56), 3 (25), CORRESP (20), 10-Q (14), EFFECT (13)1
All 43 form types
UPLOAD (13), 425 (8), S-1/A (7), S-8 (6), SCHEDULE 13G/A (6), POS AM (5), S-4/A (5), SC TO-I/A (5), 10-K (4), ARS (4), DEF 14A (4), DEFA14A (4), S-1 (4), SC 13D (4), SC 13D/A (4), SC 13G (4), S-4 (3), SCHEDULE 13G (3), 4/A (2), 424B7 (2), 8-K/A (2), SC TO-I (2), 25-NSE (1), 3/A (1), 424B4 (1), 8-A12B (1), CERT (1), D (1), DRS (1), NT 10-Q (1), RW (1), S-3 (1), S-3ASR (1), S-4 POS (1), SC 13G/A (1)
- Latest filingsAnnual report (10-K) Mar 6, 2026
Quarterly report (10-Q) Aug 6, 2026
Proxy statement (DEF 14A) Apr 29, 2026
Latest 8-K (8-K) Sep 28, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Common stock, $0.0001 par value | AMPX | The New York Stock Exchange |
| Redeemable warrants, each exercisable for one share of common stock at an exercise price of $11.50 | AMPX.W | The New York Stock Exchange |
From the cover page of the 10-K filed Mar 6, 2026 (Section 12(b) of the Exchange Act).4
Risk factors and legal proceedings
The risks Amprius Technologies, Inc. names in Item 1A of its 10-K filed Mar 6, 2026: 59 risks under these headings, as written.4
- Risks Related to Our Technology, Products and Manufacturing
- If our batteries fail to perform as expected, our ability to develop, market and sell our batteries would be adversely affected.
- Our reliance on third parties to manufacture certain of our batteries or battery materials subjects us to certain risks.
- We may not succeed in expanding our manufacturing capacity or developing production lines that meet our requirements for quality, yield, and throughput. Additionally, our reliance on third-party partners and requirements to source NDAA-compliant components at acceptable cost targets may result in significant delays, increased capital expenditures, and operational inefficiencies.
- We may not meet our production cost targets, which would limit the size of our market opportunities.
- We rely on, and will continue to rely on, complex equipment for our operations, and manufacturing involves a significant degree of risk and uncertainty in terms of operational performance and costs.
- We may not succeed in retaining and attracting key employees, particularly technical talent, needed to operate and build our business successfully.
- We have pursued new product platforms and expanded our product portfolio. We may expend our limited resources to pursue a particular product and fail to capitalize on products that may be more profitable or for which there is a greater likelihood of success.
- We may compete for time and efforts of certain of our officers and directors.
- We may encounter delays and technical obstacles in developing new battery products such as different cell formats to meet varied market requirements.
- Certain components of our batteries are hazardous and pose safety risks that may cause accidents in our manufacturing facility. We may be subject to financial and reputational risks due to product recalls and product liability claims, and we could face substantial liabilities that exceed our resources.
- We may not be able to accurately estimate the future supply and demand for our batteries, which could result in a variety of inefficiencies in our business and hinder our ability to generate revenue. If we fail to accurately predict our manufacturing requirements, we could incur additional costs or experience delays.
The other 48 risks
- We may not be able to establish supply relationships for necessary finished batteries, materials, components or equipment or may be required to pay more than anticipated for components or equipment, which could negatively impact our business.
- We face risks related to global economic, geopolitical, and market conditions, in part due to the geographies in which some of our customers are located.
- Risks Related to Our Business and Industry
- The battery market is intensely competitive. Competitors include new entrants and established companies, many of which have significantly greater resources than us. Our battery products must compete with advances in new battery chemistries and manufacturing methods as well as continued improvements in conventional batteries and battery anodes.
- Our future sales opportunities depend in part on the growth of markets for battery-powered applications. These applications may develop slower or at a size that is less than expected, to the extent they develop at all.
- Developments in alternative technology or other fossil fuel alternatives may adversely affect the demand for our battery products.
- We have pursued and may continue to pursue development agreements and other strategic alliances, which could have an adverse impact on our business if they are unsuccessful.
- Our ability to grow will depend, in part, on our ability to contract with aviation, EV and LEV OEMs to incorporate our batteries in their products, which will require significant time and expense, and may not come to fruition.
- If existing customers do not make subsequent purchases from us or renew their contracts with us, our revenue could decline, and our results of operations would be adversely impacted.
- If our customers choose to reduce purchases, or do not purchase at all, batteries manufactured outside of the United States, our revenue could decline and our prospects may be adversely affected.
- We may require additional capital to support business growth, and this capital might not be available on commercially reasonable terms or at all.
- Our future growth and success depend in part on our ability to grow our customer base and effectively sell to a wide variety of customers.
- We continue to test our business model and any failure to realize our strategic plans would have an adverse effect on our operating results and business, harm our reputation and could result in substantial liabilities that exceed our resources.
- We are an early-stage company with a history of financial losses and expect to incur significant expenses and continuing losses for the foreseeable future.
- If we fail to effectively manage our future personnel growth, we may not be able to market and sell our batteries successfully.
- Certain members of our management do not have experience in operating a public company.
- Our insurance coverage may not be adequate to protect us from all business risks.
- Our cash and money market funds could be adversely affected if the financial institutions in which we hold our cash and money market funds fail.
- We are obligated to develop and maintain proper and effective internal control over financial reporting. If we are unable to develop and maintain an effective system of internal controls and procedures required by Section 404 of the Sarbanes-Oxley Act, we may not be able to accurately report our financial results in a timely manner, which may adversely affect investor confidence in us and materially and adversely affect our stock price, business and operating results.
- Our ability to utilize our net operating losses, tax credit carryforwards, and certain other tax attributes to offset future taxable income may be subject to certain limitations.
- The unavailability, reduction or elimination of government and economic incentives could have a material adverse effect on our business, financial condition, results of operations and prospects.
- We have customers from the public sector, and our failure to receive and maintain government contracts or changes in the contracting or fiscal policies of the public sector could have a material adverse effect on our business.
- Changes in levels of U.S. government defense spending could negatively impact our financial position and results of operations.
- Risks Related to Intellectual Property
- We rely heavily on our intellectual property portfolio. If we are unable to protect our intellectual property rights, our business and competitive position would be harmed.
- We may need to defend ourselves against intellectual property infringement claims, which may be time-consuming and could cause us to incur substantial costs.
- Our patent applications may not result in issued patents or our patent rights may be contested, circumvented, invalidated or limited in scope, any of which could have a material adverse effect on our ability to prevent others from interfering with our commercialization of our batteries.
- We may obtain licenses on technology that has not been commercialized or has been commercialized only to a limited extent, and the success of our business may be adversely affected if such technology does not perform as expected.
- Risks Related to Litigation and Regulatory Compliance
- Our operations expose us to litigation, environmental and other legal compliance risks. Compliance with laws and regulations can be expensive, and our failure to comply with these laws and regulations may result in monetary damages and fines, adverse publicity and a material adverse effect on our business.
- We are subject to a variety of laws and regulations related to the safety and transportation of our batteries. Our failure to comply with these laws and regulations may have a material adverse effect on our business and results of operations.
- Failure to comply with certain health and production safety laws and regulations governing hazardous materials could materially adversely affect our business and results of operations.
- We are or will be subject to anti-corruption and anti-bribery and anti-money laundering and similar laws, and non-compliance with such laws can subject us to administrative, civil and criminal fines and penalties, collateral consequences, remedial measures and legal expenses, all of which could adversely affect our business, results of operations, financial condition and reputation.
- We and our partners and suppliers are subject to governmental export and import controls that could impair our ability to compete in international markets or subject us to liability if we violate these controls.
- We may be subject to U.S. foreign investment regulations which may impose conditions on or limit certain investors’ ability to purchase our stock, potentially making the stock less attractive to investors. Our future investments in U.S. companies may also be subject to U.S. foreign investment regulations.
- Recent and potential tariffs imposed by the United States government or a global trade war has and could continue to increase the cost of our products, which could have a material adverse effect on our business, financial condition and results of operations.
- Our reliance on suppliers in foreign countries, including China and South Korea, subjects us to risks and uncertainties relating to foreign laws and regulations and changes in relations between the United States and such foreign countries.
- From time to time, we may be involved in legal proceedings and commercial or contractual disputes, which could have an adverse impact on our profitability and financial position.
- Risks Related to Ownership of Our Common Stock
- Anti-takeover provisions in our certificate of incorporation, bylaws and Delaware law could make an acquisition of us more difficult, limit attempts by stockholders to replace or remove our management and limit the market price of our common stock.
- Our Bylaws provide, subject to limited exceptions, that the Court of Chancery of the State of Delaware and the federal district courts of the United States will be the sole and exclusive forum for certain stockholder litigation matters, which could limit our stockholders’ ability to obtain a chosen judicial forum for disputes with us or our directors, officers, employees or stockholders.
- Concentration of ownership by shareholders of our common stock may prevent new investors from influencing significant corporate decisions.
- We incurred and may continue to incur significant expenses and administrative burdens as result of operating as a public company, which could have an adverse effect on our business, financial condition and results of operations.
- We do not expect to declare any dividends in the foreseeable future.
- If securities or industry analysts do not publish or cease publishing research or reports about us, our business, or our market, or if they change their recommendations regarding our securities adversely, the price and trading volume of our securities could decline.
- We qualify as an “emerging growth company” and a “smaller reporting company” within the meaning of the Securities Act, and if we take advantage of certain exemptions from disclosure requirements available to emerging growth companies or smaller reporting companies, this could make our securities less attractive to investors and may make it more difficult to compare our performance with other public companies.
- Sales of substantial amounts of our common stock in the public markets, or the perception that such sales could occur, could cause the market price of our common stock to drop significantly, even if our business is doing well.
- We may issue additional shares of common stock under an employee incentive plan (including the 2022 Equity Incentive Plan and the Employee Stock Purchase Plan), or may issue preferred stock. Any such issuances would dilute the interest of our stockholders and likely present other risks.
- Risks Related to Our Warrants
- There is no guarantee that our warrants will be in the money, and they may expire worthless.
- We may redeem unexpired public warrants prior to their exercise at a time that is disadvantageous to the warrant holders, thereby making the public warrants worthless.
- We may amend the terms of the warrants in a manner that may be adverse to holders of warrants with the approval by the holders of at least 50% of the then outstanding warrants. As a result, the exercise price of warrants could be increased, the exercise period could be shortened and the number of shares of common stock purchasable upon exercise of a warrant could be decreased, all without warrant holder approval.
- The warrants are exercisable for common stock, which would increase the number of shares eligible for future resale in the public market and result in dilution to our stockholders.
Legal proceedings
From time to time, we may become involved in litigation or other legal proceedings. We are not currently a party to any litigation or legal proceedings that are likely to have a material adverse effect on our business. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.
The opening of Item 3, Legal Proceedings.4
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12SEC EDGARKang Sun, Chief executive officer
- 13SEC EDGARThomas M. Stepien, President
- 14SEC EDGARJonathan Bornstein, President
- 15
- 16
- 17
- 18
- 19
- 20SEC EDGARJustin E. Mirro, Officer
- 21SEC EDGARSimon Boag, Chief Technology Officer
- 22
- 23SEC EDGARKang Sun, Officer
- 24
- 25SEC EDGARKathleen A. Bayless, Board member
- 26SEC EDGARMary Gustanski, Board member
- 27SEC EDGARAnders Pettersson, Board member
- 28SEC EDGARDonald L. Runkle, Board member
- 29SEC EDGARMatthew Simoncini, Board member
- 30SEC EDGARMitchell I. Quain, Board member
- 31SEC EDGARNicole Nason, Board member
- 32SEC EDGARThomas William Lasorda, Board member
- 33SEC EDGARDonald R. Dixon, Board member
- 34SEC EDGARWen Hsuan Hsieh, Board member
- 35
- 36SEC EDGAREntered a material agreement
- 37
- 38SEC EDGARResults of operations
- 39SEC EDGARShareholder vote
- 40SEC EDGARUnregistered sale of shares
- 41
- 42SEC EDGARResults of operations
- 43SEC EDGARChange of auditor
- 44SEC EDGARResults of operations
- 45SEC EDGAREnded a material agreement
- 46SEC EDGAROther events
- 47SEC EDGARExecutive or director change
- 48NasdaqNasdaq calendar
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66