AMPX NYSE Miscellaneous Electrical Machinery, Equipment & Supplies Financials FY2021βFY2025
Amprius Technologies, Inc. had $73.0M of revenue in fiscal 2025, up 202.1% on the year before.
Last close Β· Oct 23, 2026
$8.18
3.4%Hi! I read Amprius Technologies, Inc.βs latest annual report (fiscal 2025). Here is what stands out:
Good So-so Weak
Are sales growing?
+202.1%
Yes. Sales grew 202.1% last year.
Does it make a profit?
β60.3%
No. It lost money last year.
Does profit turn into cash?
β48.7%
No. It spent more cash than it brought in.
How healthy are the accounts?
5 / 8
Mixed. It passes 5 of 8 health tests.
How is the share priced?
β
No P/E: it made no profit over the last four quarters.
Rules of thumb on reported numbers. A starting point, not a recommendation.
Is it selling more, and how much does it keep?
KIRA Β· Amprius Technologies, Inc. had $73.0M of revenue in fiscal 2025, up 202.1% on the year before. Its operating margin was β63.9%, up 127.5Β pts: of every 100 in sales, about β64 is left after running the business.
In plain words: Revenue is all the money customers paid. The margins show how many cents of each dollar of sales are left over at each step: after making the product (gross), after running the business (operating) and after everything, tax included (net).
Revenue
Revenue
Margins, % of revenue
Margins, % of revenue
KIRA Β· Amprius Technologies, Inc. lost $44.0M in fiscal 2025.
Loss periods are shown in red.
In plain words: Net income is the profit left after every cost and tax. Earnings per share (EPS) splits that profit across every share, so it shows what one share earned.
Net income
Net income
Diluted EPS
Diluted EPS
How much cash comes in, and where does it go?
KIRA Β· Free cash flow was β$35.5M in fiscal 2025, β48.7% of revenue.
Cash from operations minus capital spending.
In plain words: Profit on paper is not the same as cash in the bank. Free cash flow is the cash left after paying to run and maintain the business: the money it can hand back to shareholders, save or invest.
Free cash flow
Free cash flow
Cash from operations vs capital spending
Cash from operations vs capital spending
In plain words: Companies hand cash back in two ways: dividends (cash paid to shareholders) and buybacks (buying back their own shares, so each remaining share owns a bigger slice).
Dividends and buybacks
Diluted shares outstanding (annual)
KIRA Β· In the last 12 months, insiders sold $85.7M of shares on the open market and bought none.
Open-market purchases and sales by officers, directors and 10% owners, from Form 4 filings. βPlanβ marks trades under a pre-arranged Rule 10b5-1 plan.
In plain words: Insiders are the people who run or own a big part of the company. Buying with their own money can signal confidence; selling often has personal reasons, like taxes or diversifying.
Bought, 12 months
$0.0M
0 insiders
Sold, 12 months
$85.7M
6 insiders
Of sales under plans
75%
$64.1M
| Date | Insider | Trade | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|
| Aug 24, 2026 | Thomas M StepienChief Executive Officer, Director | Sold | 8,000 | $10.03 | $0.1M | Form 4 |
| Aug 21, 2026 | Kang SunDirector | Sold | 62,101 | $10.34 | $0.6M | Form 4 |
| Aug 21, 2026 | Thomas M StepienChief Executive Officer, Director | Sold | 23,529 | $10.34 | $0.2M | Form 4 |
| Aug 21, 2026 | Constantin Ionel StefanChief Technology Officer | Sold | 29,681 | $10.34 | $0.3M | Form 4 |
| Jun 15, 2026 | Donald R DixonDirector | Sold | 85,000 | $17.17 | $1.5M | Form 4 |
| Jun 9, 2026 | Donald R DixonDirector | Sold | 40,000 | $19.13 | $0.8M | Form 4 |
| Jun 4, 2026 | Thomas M StepienChief Executive Officer, Director | Sold | 2,000 | $20.97 | $0.0M | Form 4 |
| May 27, 2026 | Kang SunDirector | Sold | 356 | $17.19 | $0.0M | Form 4 |
| May 27, 2026 | Thomas M StepienChief Executive Officer, Director | Sold | 4,375 | $17.19 | $0.1M | Form 4 |
| May 27, 2026 | Constantin Ionel StefanChief Technology Officer | Sold | 3,208 | $17.19 | $0.1M | Form 4 |
| May 26, 2026 | Donald R DixonDirector | Sold | 17,895 | $17.90 | $0.3M | Form 4 |
| May 21, 2026 | Thomas M StepienChief Executive Officer, Director | Sold | 60,702 | $14.79 | $0.9M | Form 4 |
| May 21, 2026 | Kang SunDirector | Sold | 67,796 | $14.79 | $1.0M | Form 4 |
| May 21, 2026 | Constantin Ionel StefanChief Technology Officer | Sold | 28,812 | $14.79 | $0.4M | Form 4 |
| Apr 1, 2026 | Kang SunDirector | Sold plan | 1,500,000 | $15.90 | $23.9M | Form 4 |
| Mar 23, 2026 | Kang SunDirector | Sold plan | 217,869 | $18.80 | $4.1M | Form 4 |
| Mar 12, 2026 | Wen Hsuan HSIEHDirector | Sold | 413,146 | $18.45 | $7.6M | Form 4 |
| Mar 12, 2026 | Steven ChuDirector | Sold | 155,565 | $18.50 | $2.9M | Form 4 |
| Mar 10, 2026 | Steven ChuDirector | Sold | 166,632 | $17.92 | $3.0M | Form 4 |
| Feb 23, 2026 | Constantin Ionel StefanChief Technology Officer | Sold | 25,366 | $10.16 | $0.3M | Form 4 |
| Feb 23, 2026 | Kang SunDirector | Sold | 61,251 | $10.16 | $0.6M | Form 4 |
| Jan 28, 2026 | Constantin Ionel StefanChief Technology Officer | Sold plan | 39,690 | $12.00 | $0.5M | Form 4 |
| Jan 23, 2026 | Constantin Ionel StefanChief Technology Officer | Sold plan | 1,600 | $12.00 | $0.0M | Form 4 |
| Jan 22, 2026 | Constantin Ionel StefanChief Technology Officer | Sold plan | 492,827 | $12.04 | $5.9M | Form 4 |
| Jan 21, 2026 | Constantin Ionel StefanChief Technology Officer | Sold plan | 73,280 | $12.00 | $0.9M | Form 4 |
| Jan 20, 2026 | Kang SunDirector | Sold plan | 43,185 | $11.03 | $0.5M | Form 4 |
| Jan 16, 2026 | Kang SunDirector | Sold plan | 950,548 | $11.07 | $10.5M | Form 4 |
| Jan 12, 2026 | Kang SunDirector | Sold plan | 506,267 | $10.10 | $5.1M | Form 4 |
| Dec 11, 2025 | Constantin Ionel StefanChief Technology Officer | Sold plan | 198,255 | $10.51 | $2.1M | Form 4 |
| Nov 21, 2025 | Constantin Ionel StefanChief Technology Officer | Sold | 25,024 | $10.08 | $0.3M | Form 4 |
| Nov 21, 2025 | Kang SunChief Executive Officer, Director | Sold | 68,655 | $10.08 | $0.7M | Form 4 |
| Nov 17, 2025 | Kang SunChief Executive Officer, Director | Sold plan | 1,000,000 | $10.60 | $10.6M | Form 4 |
Can it carry its debts, and how well does it use its money?
Cash, debt and the ratios that show how comfortably Amprius Technologies, Inc. can carry it.
In plain words: What the company owns and what it owes. More cash than debt is a cushion for bad times; a lot of debt leaves less room when business slows down.
Cash vs debt (incl. leases)
| Fiscal year end | FY21 | FY22 | FY23 | FY24 | FY25 |
|---|---|---|---|---|---|
| Cash and short-term investments | $11.5M | $69.7M | $45.8M | $55.2M | $90.5M |
| Current ratio | 3.4x | 10.9x | 3.8x | 4.0x | 7.1x |
| Quick ratio | 3.3x | 10.8x | 3.7x | 3.6x | 6.7x |
| Total assets | $18.5M | $83.2M | $108M | $121M | $157M |
| Total liabilities | $4.7M | $10.1M | $47.9M | $51.7M | $53.1M |
| Shareholders' equity | $13.9M | $73.0M | $59.8M | $69.5M | $104M |
| Net debt (β = net cash) | β | β | β | β | β |
After-tax operating income as a share of the money invested in the business: debt plus equity, minus cash.
In plain words: How much profit the business makes on the money put into it. A higher percentage means each dollar invested works harder.
Return on capital, equity and assets (annual)
KIRA Β· Amprius Technologies, Inc. passes 5 of 8 financial health tests (Piotroski F-score).
Nine pass/fail tests of profitability, funding and efficiency. 8β9 is strong, 0β2 weak.
In plain words: Nine yes/no tests of financial health, one point each. A green tick is a pass: 7 to 9 points is solid, 0 to 3 is weak.
| Test | FY21 | FY22 | FY23 | FY24 | FY25 |
|---|---|---|---|---|---|
| Net income is positive | β | β | β | β | β |
| Cash from operations is positive | β | β | β | β | β |
| Return on assets rose | β | β | β | β | β |
| Cash from operations exceeds net income | β | β | β | β | β |
| Debt fell relative to assets | β | β | β | β | β |
| Current ratio rose | β | β | β | β | β |
| Share count didn't rise | β | β | β | β | β |
| Gross margin rose | β | β | β | β | β |
| Revenue rose relative to assets | β | β | β | β | β |
| F-score | β / 3 | 4 / 8 | 2 / 8 | 4 / 8 | 5 / 8 |
| Accruals ratio | β10.1% | β6.8% | β11.8% | β9.9% | β9.3% |
| Altman Z'' | β10.46 | 7.85 | β2.77 | β3.05 | 0.06 |
Every number, year by year.
Amounts in USD. Hover a ratioβs name for its definition.
In plain words: Every number we have, year by year. Download it as a spreadsheet if you want to dig deeper.
| Fiscal year | FY21 | FY22 | FY23 | FY24 | FY25 |
|---|---|---|---|---|---|
| Income statement | |||||
| Revenue | $2.8M | $4.4M | $9.1M | $24.2M | $73.0M |
| Gross profit | β$4.3M | β$5.7M | β$14.7M | β$18.3M | $8.3M |
| Research and development | $1.5M | $2.0M | $3.7M | $7.3M | $9.4M |
| Operating income | β$10.6M | β$18.0M | β$38.7M | β$46.3M | β$46.6M |
| Pretax income | β$9.9M | β$17.3M | β$36.8M | β$44.7M | β$44.0M |
| Income tax | $0.0M | $0.0M | $0.0M | $0.0M | $0.0M |
| Net income | β$9.9M | β$17.3M | β$36.8M | β$44.7M | β$44.0M |
| Net income to common | β$9.9M | β$17.3M | β$36.8M | β$45.4M | β$44.0M |
| Diluted EPS | β$0.15 | β$0.24 | β$0.43 | β$0.45 | β$0.35 |
| Diluted shares | 0.07B | 0.07B | 0.09B | 0.10B | 0.12B |
| Cash flow | |||||
| Cash from operations | β$8.0M | β$13.9M | β$25.6M | β$33.4M | β$31.1M |
| Capital expenditure | $0.6M | $1.5M | $17.6M | $3.2M | $4.4M |
| Free cash flow | β$8.6M | β$15.4M | β$43.1M | β$36.6M | β$35.5M |
| Depreciation and amortization | $1.4M | $1.5M | $1.8M | $3.8M | $4.4M |
| Stock-based compensation | $2.5M | $2.7M | $3.9M | $7.3M | $7.4M |
| Balance sheet | |||||
| Cash and short-term investments | $11.5M | $69.7M | $45.8M | $55.2M | $90.5M |
| Current assets | $14.2M | $75.2M | $50.5M | $68.8M | $126M |
| Current liabilities | $4.2M | $6.9M | $13.5M | $17.2M | $17.9M |
| Inventory | $0.5M | $0.5M | $0.7M | $6.6M | $6.7M |
| Property and equipment, net | $4.2M | $4.2M | $21.8M | $17.5M | $9.7M |
| Total assets | $18.5M | $83.2M | $108M | $121M | $157M |
| Total liabilities | $4.7M | $10.1M | $47.9M | $51.7M | $53.1M |
| Shareholders' equity | $13.9M | $73.0M | $59.8M | $69.5M | $104M |
| Margins | |||||
| Gross margin | β156.2% | β128.2% | β162.1% | β75.8% | 11.3% |
| Operating margin | β383.2% | β409.2% | β427.6% | β191.4% | β63.9% |
| EBITDA margin | β331.2% | β374.3% | β407.6% | β175.7% | β57.9% |
| Net margin | β357.0% | β393.1% | β406.2% | β184.8% | β60.3% |
| FCF margin | β311.1% | β348.4% | β476.1% | β151.3% | β48.7% |
| Returns | |||||
| Return on capital employed | β74.0% | β23.7% | β41.1% | β44.5% | β33.6% |
| Return on equity | β71.4% | β39.9% | β55.4% | β69.1% | β50.8% |
| Return on assets | β53.4% | β34.1% | β38.5% | β39.0% | β31.7% |
| Return on tangible equity | β71.4% | β23.7% | β61.5% | β65.3% | β42.4% |
| Growth | |||||
| Revenue growth | β | 59.1% | 105.3% | 167.0% | 202.1% |
| Share count change | β | 8.5% | 20.8% | 18.2% | 22.3% |
| Financial health | |||||
| Current ratio | 3.4x | 10.9x | 3.8x | 4.0x | 7.1x |
| Quick ratio | 3.3x | 10.8x | 3.7x | 3.6x | 6.7x |
| Capital allocation | |||||
| Capex / revenue | 22.0% | 33.6% | 193.9% | 13.3% | 6.0% |
| Stock comp / revenue | 89.2% | 61.4% | 42.9% | 30.4% | 10.1% |
| Quality scores | |||||
| Piotroski F-score | β | 4.0 | 2.0 | 4.0 | 5.0 |
| Altman Z'' | β10.5 | 7.8 | β2.8 | β3.1 | 0.1 |
| Accruals ratio | β10.1% | β6.8% | β11.8% | β9.9% | β9.3% |
Source: SEC EDGAR XBRL filings (CIK 0001899287). Data updated October 24, 2026. Quarterly fourth quarters are the full year minus the first nine months. For information only β not investment advice. Check the original filings before relying on any figure.
