
- Ticker
- AMPX
- Beat
- energy
- Size
- Public Company
- Revenue
- $34.0M
- as of Jun 2026
- Cash
- $74.5M
- as of Jun 2026
- Burn
- $4.7M/qtr
- as of Jun 2026
- Runway
- ~4.0yr at this rate
- as of Jun 2026
- Researched · Stale
- 12 days ago
A real, first-mover aviation/drone battery franchise inflecting to its first profitable year — but priced at ~17x guided 2026 sales with a China related-party supplier (Berzelius, ~36% of COGS, tied to the founder) now the subject of an active short report; the franchise is bullish, the stock is a show-me on revenue quality.
6 mentions across our dossiers
“Note the peers are not pure comparables — Enovix is consumer-electronics-led, Sila/Group14 are EV-materials-led, while Amprius is aviation-led; valuation reflects different end-market growth.”Enovix · RIVAL · from Amprius Technologies’s dossier
Weekly closes
- Short interest: 22,815,859 sh · 3.8 days to cover, FINRA · settled 30 Sept 2026
- Next print: in 7 days, Scheduled · 7 Nov 2026, scheduled
Who is buying
- Shares sold shortFINRA · settled 30 Sept 2026
- 22,815,859 shares
- Days to unwind the shortFINRA · settled 30 Sept 2026
- 3.8
The reported figures
| Period | As of | Revenue | Operating margin | Free cash flow | Capex | Cash | Shares outstanding | Grading | Source |
|---|---|---|---|---|---|---|---|---|---|
| Q3 ’23 | 30 Sept 2023 | $2.8M USD | — | -$17.6M USD | $8.9M USD | $53.4M USD | 88.4M shares | Filed · primary | sec.gov |
| Q4 ’23 | 31 Dec 2023 | $3.9M USD | — | -$10.6M USD | $5.8M USD | $45.8M USD | — | Filed · primary | sec.gov |
| Q1 ’24 | 31 Mar 2024 | $2.3M USD | — | -$13.7M USD | $3.9M USD | $39.0M USD | 91.6M shares | Filed · primary | sec.gov |
| Q2 ’24 | 30 Jun 2024 | $3.3M USD | — | -$9.6M USD | $1.6M USD | $46.4M USD | 111.1M shares | Filed · primary | sec.gov |
| Q3 ’24 | 30 Sept 2024 | $7.9M USD | — | -$10.9M USD | $1.3M USD | $35.0M USD | 105.8M shares | Filed · primary | sec.gov |
| Q4 ’24 | 31 Dec 2024 | $10.6M USD | — | -$2.5M USD | -$3.6M USD | $55.2M USD | — | Filed · primary | sec.gov |
| Q1 ’25 | 31 Mar 2025 | $11.3M USD | -85.7% share of revenue | -$15.0M USD | $913K USD | $48.4M USD | 117.9M shares | Filed · primary | sec.gov |
| Q2 ’25 | 30 Jun 2025 | $15.1M USD | -45.2% share of revenue | -$5.0M USD | $716K USD | $54.2M USD | 125.1M shares | Filed · primary | sec.gov |
| Q3 ’25 | 30 Sept 2025 | $21.4M USD | -21.9% share of revenue | -$9.7M USD | $414K USD | $73.2M USD | 130.5M shares | Filed · primary | sec.gov |
| Q4 ’25 | 31 Dec 2025 | $25.2M USD | — | -$5.9M USD | $2.4M USD | $90.5M USD | — | Filed · primary | sec.gov |
| Q1 ’26 | 31 Mar 2026 | $28.5M USD | -23.4% share of revenue | -$38.3M USD | $980K USD | $62.4M USD | 141.6M shares | Filed · primary | sec.gov |
| Q2 ’26 | 30 Jun 2026 | $34.0M USD | -12.6% share of revenue | -$4.7M USD | $1.8M USD | $74.5M USD | 146.1M shares | Filed · primary | sec.gov |
Amprius Technologies’s figures as the company reported them in its filings. Quarters are calendar quarters, so a company whose year ends in January shows each fiscal quarter under the calendar quarter it falls in. An empty slot is a quarter we hold no figure for.
Q2 ’26 · as of Jun 2026
Lighter bars: Q4 worked out as the full-year total minus the three reported quarters.
Q2 ’26 · as of Jun 2026
A margin beyond ±100%, or on zero revenue, is left out as not meaningful.
Q2 ’26 · as of Jun 2026
Lighter bars: Q4 worked out as the full-year total minus the three reported quarters.
Operating cash flow minus capital spending.
Q2 ’26 · as of Jun 2026
Q2 ’26 · as of Jun 2026
A rising count is dilution: each existing share owns less of the company.
Latest filing: sec.gov
What happened
| Date | Type | What happened | Source |
|---|---|---|---|
| 2026-10-19 | editorial note | Margin figure revised: 11% → 20%Margin moved from 11% (deep-dive-2026-06-18.md) to 20% (deep-dive-2026-10-19.md). | dossier |
| 2026-10-19 | editorial note | Revenue figure revised: 37% → $34,032Revenue moved from 37% (deep-dive-2026-06-18.md) to $34,032 (deep-dive-2026-10-19.md). | dossier |
| 2026-09-28 | contract | 8-K: Other Transaction Agreement with U.S. Government, up to $75mOn 23 Sep 2026 Amprius entered an Other Transaction Agreement with the U.S. Government (Project acCELLerate) for a milestone-based award of up to $75 million; about $22 million obligated for the base period 23 Sep 2026 to 22 Sep 2028. | agent:company-events · SEC EDGAR 8-K |
- 10-Q · 2026-Q17 May 2026
- 10-K · 2025-Q46 Mar 2026
- 10-Q · 2025-Q36 Nov 2025
- The dossier: Refresh delta (since 2026-06-18), 757 words, 19 filing mentions
- The dossier: What held, 138 words, 1 filing mention
The Amprius Technologies dossier
The verdict
A real, first-mover aviation/drone battery franchise inflecting to its first profitable year — but priced at ~17x guided 2026 sales with a China related-party supplier (Berzelius, ~36% of COGS, tied to the founder) now the subject of an active short report; the franchise is bullish, the stock is a show-me on revenue quality.
Primary sources
SEC filings
Source documents — open to read in full
Refresh delta (since 2026-06-18)
-
Q2 2026: revenue $34,032K, +126% YoY (Q2 2025: $15,067K) and +19% on Q1; six-month revenue $62,568K (2025: $26,351K) [Form 10-QThe quarterly version of the annual report. Lighter, and not audited.; Form 8-KA filing for something that happened between reports and matters enough to tell shareholders now. Q2]. Gross profit $9.3M, a 27% margin against 20% in Q1 2026 and 9% in Q2 2025 [8-K Q2]. Net loss before the warrant charge $3,154K (Q2 2025: $6,370K); a $1,921K non-cash increase in fair value from a warrant modification brings the net loss attributable to common stockholders to $5,075K, $0.04 per share on 143.5M weighted shares [10-Q, statement of operations]. Six-month net loss $8,200K, $10,121K attributable [10-Q]. Non-GAAP adjusted EBITDA was −$1.0M against −$2.1M [8-K Q2, non-GAAP measure].
-
Guidance raised for the second consecutive quarter [8-K Q2, updated 2026 outlook]: revenue at least $140M (was at least $130M); gross margin at least 28% (was at least 25%); net loss below $10M, now including the $1.9M charge; adjusted EBITDA at least $4M. The first half gave revenue of $62.6M, so the second half needs at least $77.4M. The prior dossier priced the stock at "~17x guided 2026 sales" on the earlier guide.
-
Cash conversion: the dossier's stated decisive data point. Net cash used in operating activities was $40,126K for the six months (2025: $18,391K), against a net loss of $8,200K [10-Q, cash-flow statement]. Included in that figure is a $20,898K reduction in operating lease liabilities (2025: $1,707K) alongside a $13,362K derecognition of right-of-use assets on a lease termination and a $166K loss on termination; excluding that one line, operating cash use was $19.2M. Accounts receivable, net, rose to $40,650K from $23,737K at 2025-12-31 (+71%), a $16,843K use of cash; inventories to $11,510K from $6,735K [10-Q balance sheet and cash-flow statement; estimate: $40,650K / $23,737K − 1]. Receivables were about 109 days of Q2 revenue. Bill-and-hold revenue was nil in Q2 and $5.8M for the half (2025: $6.2M and $11.5M), with $3.0M of undelivered bill-and-hold amounts at 2026-06-30 [10-Q, revenue note].
-
Liquidity. Cash and equivalents $74,517K at 2026-06-30 against $90,465K at 2025-12-31; investing used $2,444K; financing provided $25,403K, from stock-option and warrant exercises and exchanges, with no ATM proceeds in 2026 against about $18.1M net in the first half of 2025 [10-Q, liquidity and cash-flow statement]. Total assets $149.2M [10-Q]. The prior dossier flagged chronic DilutionIssuing new shares, so each existing share owns a smaller slice of the same company. from 18.6M warrants, RSUs and an ATM; weighted shares were 143.5M in Q2 2026 against 121.8M a year earlier.
-
Berzelius: the filing's own description. The 10-Q calls Berzelius (Nanjing) "a former affiliated company," says Dr. Kang Sun, the former CEO and a current director, serves on the board of Berzelius and its holding company, and states that at 2026-06-30 and 2025-12-31 neither Dr. Sun nor Amprius had a controlling interest in Berzelius, nor Berzelius in Amprius. Amprius holds exclusive rights to buy Berzelius's silicon anode materials in the US, Canada and Mexico under a November 2023 agreement and had no purchase commitments with Berzelius at 2026-06-30 [10-Q, supply risk and related-party sections]. The prior dossier recorded Berzelius as ~36% of COGS and tied to the founder; this 10-Q's passages searched give no COGS percentage. The 10-Q text was searched for "Manatee", "short report", "Leviton", "subpoena" and "investigation" and none appears.
-
New contracts and customers [8-K Q2, business highlights; company statements]: a multi-year supply agreement with Stark Future starting in 2027 that the company says could exceed $100 million; a $24.0M order from a European drone developer for SiCore cylindrical cells; supply of SiCore cells to Redwire for the Stalker Block 30 drone; installation started on about 40% of the tools for the Fremont pilot line expansion, partly funded by the Defense Innovation Unit; more contract-manufacturing partners in South Korea.
-
Other Transaction Agreement with the US Government, signed 2026-09-23 ("Project acCELLerate"). Up to $75M, fixed-price and paid on accepted milestones, the whole amount being the US Government share with no company cost share; base period from 2026-09-23 through 2028-09-22; about $22M obligated from fiscal 2025 RDT&E funding; the aim is domestic production of silicon-anode pouch cells for small unmanned aircraft compliant with NDAA Section 842. Terms include US Government licence rights in technical data, restrictions on foreign participation and on foreign acquisitions and mergers, cybersecurity obligations, and termination for convenience by either party on 30 days' notice [8-K OTA]. The prior seed lists "NDAA-compliant second-source qualification, 2026-2027" and an NDAA and export-control collision as risks.
-
Fremont lease extended. On 2026-08-07 the company amended the lease for its Fremont facility, extending the term from 2027-06-30 to 2034-06-30 (84 months), with two five-year extension options; total future lease payments after the amendment are about $10.5M [8-K lease].
What held
- The prior dossier's question, whether operating cash flow converges with earnings, is answered in the negative on the half's numbers: operating cash use of $40.1M against a net loss of $8.2M, and receivables up 71% (fact 3), though $20.9M of the cash use is a lease-liability line.
- Revenue quality flags the dossier raised remain visible: bill-and-hold revenue of $5.8M in the half, though none in Q2 (fact 3), and receivables running well ahead of revenue growth.
- The Berzelius dependence remains: exclusive purchase rights and purchases continue, though the 10-Q states no controlling interest either way and no purchase commitments at 2026-06-30 (fact 5).
- Guidance moved up, and the first half implies a lower bar for the second half than the first-half growth rate (facts 1 and 2). The position seed is carried unchanged below.
How our view changed
2 dossiersEvery dossier we have written on Amprius Technologies, newest first.
- current
A real, first-mover aviation/drone battery franchise inflecting to its first profitable year
A real, first-mover aviation/drone battery franchise inflecting to its first profitable year
The research around Amprius Technologies
Covered in the Knowledge Base
Energy & Power
Company details
| Industry | Energy |
| Size | Public Company |
| Website | Visit Amprius Technologies |
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