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Amprius Technologies, Inc. (AMPX)

Amprius Technologies, Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Amprius Technologies, Inc. (AMPX) is a Electrical Equipment & Parts company based in US with a market capitalization of $2.8B. Revenue grew 202.1% year-over-year and free cash flow was negative at -$35.5M. This page tracks AMPX's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 99 employees · IPO Sep 15, 2022

Valuation

Valuation & price

$16.85 · as of May 17, 2026 · -26.5% vs 52w high

—

P/E ratio

Latest-FY diluted EPS

27.41

P/B ratio

Market cap ÷ book equity

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Dividend yield

Price — last 12 months

$22.69$13.82$4.94Jul 25Dec 25Jul 26Jul 7, 25$4.94Jul 9, 25$5.96Jul 11, 25$6.44Jul 15, 25$7.49Jul 17, 25$8.06Jul 21, 25$8.38Jul 23, 25$8.03Jul 25, 25$8.20Jul 29, 25$7.14Jul 31, 25$6.93Aug 4, 25$7.54Aug 6, 25$7.90Aug 11, 25$7.69Aug 13, 25$7.67Aug 15, 25$7.11Aug 19, 25$6.74Aug 21, 25$6.79Aug 25, 25$7.68Aug 27, 25$7.30Aug 29, 25$7.09Sep 3, 25$7.09Sep 5, 25$7.11Sep 9, 25$7.82Sep 11, 25$8.14Sep 16, 25$9.14Sep 18, 25$11.47Sep 22, 25$12.06Sep 24, 25$11.09Sep 26, 25$10.93Sep 30, 25$10.52Oct 2, 25$12.49Oct 6, 25$13.44Oct 8, 25$12.42Oct 10, 25$11.93Oct 14, 25$13.25Oct 16, 25$12.78Oct 21, 25$12.21Oct 23, 25$11.66Oct 27, 25$12.63Oct 29, 25$12.50Oct 31, 25$14.09Nov 4, 25$12.10Nov 6, 25$11.26Nov 10, 25$13.59Nov 12, 25$12.37Nov 14, 25$11.29Nov 18, 25$10.67Nov 20, 25$10.30Nov 25, 25$10.73Nov 28, 25$11.32Dec 2, 25$10.86Dec 4, 25$12.22Dec 8, 25$11.80Dec 10, 25$11.04Dec 12, 25$10.91Dec 16, 25$10.28Dec 18, 25$9.15Dec 22, 25$9.07Dec 24, 25$8.53Dec 29, 25$7.92Jan 2, 26$8.74Jan 6, 26$9.19Jan 8, 26$9.24Jan 12, 26$10.01Jan 14, 26$10.36Jan 16, 26$11.00Jan 21, 26$11.27Jan 23, 26$11.17Jan 27, 26$11.58Jan 29, 26$13.58Feb 2, 26$13.15Feb 4, 26$12.40Feb 9, 26$12.49Feb 11, 26$11.11Feb 13, 26$9.97Feb 18, 26$9.91Feb 20, 26$9.52Feb 24, 26$10.80Feb 26, 26$11.52Mar 2, 26$11.59Mar 4, 26$12.55Mar 6, 26$16.33Mar 10, 26$18.00Mar 12, 26$18.30Mar 17, 26$19.38Mar 19, 26$19.11Mar 23, 26$18.68Mar 25, 26$17.93Mar 27, 26$16.12Mar 31, 26$16.86Apr 2, 26$16.00Apr 7, 26$16.70Apr 9, 26$16.15Apr 13, 26$18.39Apr 15, 26$18.30Apr 17, 26$18.67Apr 22, 26$22.69Apr 24, 26$20.66Apr 28, 26$19.69Apr 30, 26$21.06May 4, 26$20.38May 6, 26$22.19May 8, 26$16.70May 12, 26$18.83May 14, 26$17.87May 18, 26$15.87May 20, 26$15.07May 22, 26$16.03May 28, 26$20.85Jun 1, 26$21.75Jun 3, 26$21.74Jun 5, 26$19.69Jun 9, 26$17.42Jun 11, 26$17.10Jun 15, 26$16.82Jun 17, 26$15.00Jun 22, 26$15.65Jun 24, 26$12.52Jun 26, 26$12.91Jul 2, 26$12.38
$4.9452-week range$22.91
Loading valuation history…

Fundamentals

Key fundamentals

$2.8B

Market cap

202.1%

Revenue growth (YoY)

11.3%

Gross margin

-$35.5M

Free cash flow (USD)

-$50.6M

Net debt

Net cash position

22.4%

Share dilution

1/5

Graham criteria passed

Defensive-investor screen

Industrials

Sector

Trajectory

Long-term trends

Revenue by year

2020 → 2025

FY 2020$4.7MFY 2021$2.8MFY 2022$4.4MFY 2023$8.8MFY 2024$24.2MFY 2025$73.0M
$4.7M$73M

Free cash flow by year

2020 → 2025

FY 2020$-5.6MFY 2021$-8.6MFY 2022$-15.4MFY 2023$-43.1MFY 2024$-36.6MFY 2025$-35.5M
-$5.6M-$35.5M

Gross margin by year

2021 → 2025

FY 2021-156.2%FY 2022-123.4%FY 2023-169.9%FY 2024-75.8%FY 202511.3%
-156.2%11.3%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

10

Insider sells · 90 days

Earnings

Last report: 10-Q filed May 7, 2026

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventAnnual Meeting ResultsJun 17, 2026Filing
  • Insider sellInsider Sell $1.5MDIXON DONALD R · Director · $1.5MJun 16, 2026Filing
  • Insider sellInsider Sell $765KDIXON DONALD R · Director · $765.2KJun 11, 2026Filing
  • Insider sellInsider Sell $42KStepien Thomas M · Director, Chief Executive Officer · $41.9KJun 5, 2026Filing
  • Insider sellInsider Sell $320KDIXON DONALD R · Director · $320.3KMay 28, 2026Filing
  • Insider sellInsider Sell $55KStefan Constantin Ionel · Chief Technology Officer · $55.2KMay 28, 2026Filing
  • Insider sellInsider Sell $75KStepien Thomas M · Director, Chief Executive Officer · $75.2KMay 28, 2026Filing
  • Insider sellInsider Sell $6KSun Kang · Director · $6.1KMay 28, 2026Filing
  • Insider sellInsider Sell $898KStepien Thomas M · Director, Chief Executive Officer · $897.7KMay 26, 2026Filing
  • Insider sellInsider Sell $426KStefan Constantin Ionel · Chief Technology Officer · $426.1KMay 26, 2026Filing

Questions

Frequently asked questions

What is Amprius Technologies, Inc.'s market cap?

Amprius Technologies, Inc. (AMPX) has a market capitalization of $2.8B.

What is AMPX's P/E ratio?

A meaningful P/E ratio is not available for AMPX — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

What is AMPX's price-to-book (P/B) ratio?

AMPX trades at 27.41 times book value per share.

Are insiders buying AMPX stock?

SEC Form 4 filings show no open-market insider buys at Amprius Technologies, Inc. in the last 90 days (10 sells).

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Timeline

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News

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Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.