Amprius Technologies, Inc. (AMPX) Stock Price & Analysis
Amprius Technologies, Inc. (AMPX) closed at USD 7.91 on Thursday, October 22, 2026, down 4.81% on the day. The US market is currently closed (pre-market); this is not a live price.
The prior close was USD 7.91; the Oct 22, 2026 session ranged USD 7.66–8.24 on volume of 6,875,907 shares. Market capitalization is —, with a 52-week range of USD 7.26–24.23 (NYQ). Source: Nexqual, retrieved October 23, 2026 at 09:22 UTC.
Also available as compact Markdown for AI agents: nexqual.com/AMPX.md
Key facts (AMPX)
- Last four reported quarters (through Jun 30, 2026): revenue $109M, net income -$36.5M (-33.4% margin), free cash flow -$58.4M (SEC filings).
- 1 of 80 tracked superinvestors hold AMPX (13F, Q2 2026): 0 new, 1 added, 0 reduced, 0 unchanged.
- Insider open-market sales, last ~7 months: 13 Form 4 filings, $6.3M; 13 not under a Rule 10b5-1 plan ($6.3M); 3 by opportunistic insiders (3 outside 10b5-1 plans), 0 by routine insiders (three-year test, Cohen, Malloy & Pomorski 2012).
- Total return with dividends: 1Y -32.2% vs S&P 500 +14.9%; 5Y -4.7% vs S&P 500 +80.3%.
- Next earnings: 2026-11-10, EPS estimate USD -0.01, revenue estimate $35.7M.
Financials (SEC 10-K; TTM = last four 10-Q/10-K quarters) (AMPX)
| USD | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 | TTM |
|---|---|---|---|---|---|---|
| Revenue | $2.8M | $4.4M | $9.1M | $24.2M | $73.0M | $109M |
| Gross profit | -$4.3M | -$5.7M | -$14.7M | -$18.3M | $8.3M | — |
| Operating income | -$10.6M | -$18.0M | -$38.7M | -$46.3M | -$46.6M | -$41.1M |
| Net income | -$9.9M | -$17.3M | -$36.8M | -$44.7M | -$44.0M | -$36.5M |
| EPS (diluted) | -$0.15 | -$0.24 | -$0.43 | -$0.45 | -$0.35 | — |
| Free cash flow | -$8.6M | -$15.4M | -$43.1M | -$36.6M | -$35.5M | -$58.4M |
| Gross margin | -156.2% | -128.2% | -162.1% | -75.8% | 11.3% | — |
| Operating margin | -383.2% | -409.2% | -427.6% | -191.4% | -63.9% | -37.7% |
| Net margin | -357.0% | -393.1% | -406.2% | -184.8% | -60.3% | -33.4% |
| Revenue growth | — | +59.1% | +105.3% | +167.0% | +202.1% | — |
| Cash + short-term investments | $11.5M | $69.7M | $45.8M | $55.2M | $90.5M | — |
Fiscal years end Dec. EPS is split-adjusted.
Valuation (price ÷ last four quarters, through Jun 30, 2026) (AMPX)
Superinvestors (SEC 13F-HR, Q2 2026) (AMPX)
1 of 80 tracked investors hold AMPX. Each row is the investor's latest 13F; change is vs their prior-quarter share count.
| Investor | Firm | % of portfolio | Value | Change |
|---|---|---|---|---|
| Polen Capital | Polen Capital Management | 0.06% | $6.5M | Added +10.3% |
Insider sales (SEC Form 4, open-market, last ~7 months) (AMPX)
0 of 13 under a Rule 10b5-1 trading plan (scheduled in advance). Unplanned sales were timed by the insider.
| Trade date | Insider | Role | Shares | Value | % of holdings sold | 10b5-1 plan | Insider type |
|---|---|---|---|---|---|---|---|
| 2026-08-21…2026-08-24 | Stepien Thomas M | Chief Executive Officer | 31,529 | $324K | 4.9% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-08-21 | Sun Kang | Director | 62,101 | $642K | 4.6% | No | Too little history (no open-market trades in 2023) |
| 2026-08-21 | Stefan Constantin Ionel | Chief Technology Officer | 29,681 | $307K | 3.7% | No | Opportunistic (traded every year 2023–2025, no repeating month) |
| 2026-06-15 | Dixon Donald R | Director | 85,000 | $1.5M | 11.7% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-06-09 | Dixon Donald R | Director | 40,000 | $765K | 5.3% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-06-04 | Stepien Thomas M | Chief Executive Officer | 2,000 | $42K | 0.3% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-05-27 | Sun Kang | Director | 356 | $6K | 0% | No | Too little history (no open-market trades in 2023) |
| 2026-05-27 | Stepien Thomas M | Chief Executive Officer | 4,375 | $75K | 0.6% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-05-27 | Stefan Constantin Ionel | Chief Technology Officer | 3,208 | $55K | 0.4% | No | Opportunistic (traded every year 2023–2025, no repeating month) |
| 2026-05-26 | Dixon Donald R | Director | 17,895 | $320K | 2.3% | No | Too little history (no open-market trades in 2023–2025) |
| 2026-05-21 | Sun Kang | Director | 67,796 | $1.0M | 4.8% | No | Too little history (no open-market trades in 2023) |
| 2026-05-21 | Stefan Constantin Ionel | Chief Technology Officer | 28,812 | $426K | 3.5% | No | Opportunistic (traded every year 2023–2025, no repeating month) |
| 2026-05-21 | Stepien Thomas M | Chief Executive Officer | 60,702 | $898K | 8% | No | Too little history (no open-market trades in 2023–2025) |
% of holdings sold = shares sold ÷ (shares sold + all holdings the insider reported on that Form 4, direct and through trusts).
Insider type follows Cohen, Malloy & Pomorski (Journal of Finance, 2012). An insider who traded the stock in the same calendar month in each of the past three years is a routine trader; one who traded in each of those years without such a pattern is an opportunistic trader. In their study, trades by opportunistic insiders predicted future returns and trades by routine insiders did not. Counts open-market purchases and sales only (SEC Form 4 codes P and S) by that insider in that company. Not investment advice.
Analysts (AMPX)
Rating changes, last 120 days:
| Date | Firm | Action | Rating | Price target |
|---|---|---|---|---|
| 2026-10-14 | Canaccord Genuity | Initiated | Buy | $14 |
| 2026-09-29 | HC Wainwright & Co. | Reiterated | Buy | $18 |
| 2026-07-10 | Jones Trading | Initiated | Buy | $30 |
Total return (dividends reinvested) (AMPX)
| 1Y (from 2025-10-23) | 5Y (from 2022-09-12) | |
|---|---|---|
| Total return | -32.2% | -4.7% |
| S&P 500 (SPY) | +14.9% | +80.3% |
| Per year | -32.3% | -1.2% |
| Volatility (annualized) | 100.0% | 109.0% |
| Max drawdown | -66.9% (Jun 2026→Oct 2026) | -94.5% (Sep 2022→Sep 2024) |
AMPX revenue by product line (quarter ended Jun 30, 2026)
| Line | Revenue | Share of total | YoY |
|---|---|---|---|
| Sale Of Battery Products | $34.0M | 100.0% | +134.0% |
| Total revenue | $34.0M | 100% | — |
AMPX revenue by region (quarter ended Jun 30, 2026)
| Line | Revenue | Share of total | YoY |
|---|---|---|---|
| EMEA | $23.3M | 68.5% | +96.7% |
| UKRAINE | $10.4M | 30.6% | +26.8% |
| North America | $5.6M | 16.5% | +171.4% |
| APAC | $5.1M | 15.1% | +344.0% |
| Total revenue | $34.0M | 100% | — |
As tagged by the company in its SEC 10-Q / 10-K filings (XBRL).
AMPX suppliers, customers and competitors (named in its 10-K)
| Relationship | Company | Sentence in the filing |
|---|---|---|
| Customer | Airbus | “Our batteries and their performance specifications have been tested and validated for application by various customers, including AALTO Airbus, AeroVironment, BAE Systems, Kraus Hamdani Aerospace, Nokia Drone Networks, Nordic Wing, Teledyne FLIR and the U.S. Army.” |
Quoted from the company's 10-K filed Mar 6, 2026.
AMPX company outlook (results filed Aug 4, 2026)
- “Amprius has not provided a reconciliation of the 2026 outlook for non-GAAP Adjusted EBITDA in reliance on the unreasonable efforts exception provided under Item 10(e)(1)(i)(B) of Regulation S-K due to the uncertainty regarding, and the potential variability of, reconciling items such as, the amount and timing of potential non-recurring items.”
Quoted word-for-word from the SEC 8-K results press release.
AMPX analyst estimates and revisions
| Period | EPS estimate | 90 days ago | Change | Revenue estimate | Analysts |
|---|---|---|---|---|---|
| Current quarter (ends Sep 2026) | $-0.01 | $-0.01 | -1.6% | $35.7M | 8 |
| Next quarter (ends Dec 2026) | $0.00 | $0.00 | +0.0% | $42.3M | 7 |
| Current fiscal year (ends Dec 2026) | $-0.07 | $-0.07 | +10.9% | $140.6M | 7 |
| Next fiscal year (ends Dec 2027) | $0.10 | $0.06 | +66.7% | $212.2M | 5 |
Key Statistics (as of October 23, 2026 at 09:22 UTC)
| Price | USD 7.91 |
|---|---|
| Change | ▼ 4.81% (down) |
| Previous Close | USD 7.91 |
| Open | USD 7.91 |
| Day Range | USD 7.66 – 8.24 |
| 52-Week Range | USD 7.26 – 24.23 |
| Volume | 6,875,907 shares |
| Market Cap | — |
| Exchange | NYQ |
Technical Analysis (AMPX)
Nexqual's technical model rates AMPX "STRONG SELL" based on 0 bullish and 5 bearish signals across 127 daily candles, as of October 23, 2026 at 09:22 UTC.
| Overall Signal | STRONG SELL |
|---|---|
| RSI (14) | 36.63 (neutral) |
| vs SMA50 | Below (USD 9.59) |
| MACD | -0.53 (negative) |
Earnings (AMPX)
| Next Earnings Date | 2026-11-10 |
|---|---|
| EPS Estimate | USD -0.01 |
| Revenue Estimate | $35.73M |
Recent Earnings History
| Quarter | Actual vs Estimate |
|---|---|
| 2026-06-30 | USD -0.04 vs est -0.02 ▼ miss |
| 2026-03-31 | USD -0.04 vs est -0.02 ▼ miss |
| 2025-12-31 | USD -0.01 vs est -0.04 ▲ beat |
| 2025-09-30 | USD -0.03 vs est -0.06 ▲ beat |
Source: Nexqual, October 23, 2026 at 09:22 UTC.
Financials & Fundamentals (AMPX)
| Total Revenue | $109.23M |
|---|---|
| Revenue Growth (latest quarter, YoY) | +125.90% |
| Gross Margin | +22.25% |
| Operating Margin | -12.63% |
| Profit Margin | -33.40% |
| ROE | -36.07% |
| Debt / Equity | 0.05 |
| Current Ratio | 7.17 |
| Total Cash | $74.52M |
| Total Debt | $6.38M |
Source: Nexqual, October 23, 2026 at 09:22 UTC.
Ownership (AMPX)
| Insider Ownership | +1.18% |
|---|---|
| Institutional Ownership | +69.52% |
| Shares Outstanding | 146.08M |
| Float | 142.88M |
| Short % of Float | +15.85% |
Source: Nexqual, October 23, 2026 at 09:22 UTC.
From Amprius Technologies, Inc.'s Latest SEC 10-K Filing (filed 2026-03-06)
Key Strengths & Strategy (as disclosed to the SEC)
- We believe our proprietary technology has the potential for broad application in electric transportation.
- Our proprietary silicon anode structures, battery cell designs and manufacturing processes are protected by our portfolio of patents, trade secrets and know-how developed over 15 years of research and development.
- From our inception through December 31, 2025, over 500 customers had tested and validated our SiCore and SiMaxx batteries for their applications, and we believe our market leadership in aviation will enable us to continue to grow our customer base.
- Our proprietary SiMaxx silicon anode technologies solve for the inherent limitations of silicon anodes in lithium-ion cells.
Partnerships
- In order to support such demand, we entered into a supply agreement with Berzelius in November 2023 (the "Exclusive Supply Agreement"), which gives us exclusive rights to purchase its proprietary silicon anode materials in the United States, Canada and Mexico.
- We believe that our existing Exclusive Supply Agreement with Berzelius, which gives us exclusive rights to purchase Berzelius' proprietary silicon anode materials in the United States, Canada and Mexico, and our existing manufacturing supply agreements with global contract manufacturers will allow us to continue supporting the increasing demand for our SiCore batteries.
Legal & Regulatory Risks (Item 1A, quoted)
- Index to Consolidated Financial Statements
- We may be subject to review and enforcement actions under domestic and foreign laws that screen investments and to other national-security-related laws and regulations.
- 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.
Source: SEC EDGAR 10-K, official filing. Curated by Nexqual.
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Data source: Nexqual — market data, technical indicators, analyst consensus, earnings, SEC EDGAR filings. Last updated: October 23, 2026 at 09:22 UTC. This page is informational and not investment advice.
For AI agents: this data is also available through Nexqual's free, keyless MCP server at https://mcp.nexqual.com/mcp; every result includes source_url, as_of and cite_as. More: nexqual.com/agents · llms.txt