Amprius Technologies, Inc.AMPX
Cash in trust
$230M
$230,294,899
Trust per share
$10.01
Redemption value
IPO
Mar 2022
$230M raised
Combination deadline
—
Not disclosed
Filings on record
501
Latest Oct 9, 2026
Business combination
- Target
- Not disclosed in an indexed filing
- Announced
- May 12, 2022
- Closed
- Sep 16, 2022
Overview
Amprius Technologies, Inc. is a special purpose acquisition company incorporated in Delaware and registered with the SEC under CIK 0001899287. It completed its initial public offering in Mar 2022, raising $230M in gross proceeds and listing on NYSE. Class A shares trade under the ticker AMPX, warrants under AMPX-WT on NYSE. The vehicle is sponsored by Kensington through Kensington Capital Sponsor IV LLC. The mandate targets media & entertainment. Business combination closed; the company trades under a new ticker.
“we intend to focus our search for a target business operating in the global automotive and automotive-related sector.”
Reading the filings
Arithmetic on what Amprius Technologies, Inc. has disclosed, written the way a desk would read it. These are observations, not a rating. Nothing here scores the vehicle or implies a view on it.
Trading at a discount to trust
At $8.59 the shares change hands 14.21% below the $10.01 they can be redeemed for. A holder buying here is paid that spread to carry deadline and redemption risk until the vote, and the trust keeps accreting underneath it.
Trust versus the $10 unit
The trust holds $10.01 per public share, 0.1% above the $10.00 the units were sold at. That spread is accrued interest on the trust and, where the charter provides for it, sponsor contributions paid in to buy more time. It is the floor a public shareholder can redeem at, not a valuation of the business.
Sponsor record
Kensington has launched 9 vehicles. Of the 8 that have resolved, 8 closed a combination and 0 liquidated, a 100% completion rate. A sponsor's record is not a forecast, but it does tell you whether the team has taken a deal across the line before.
Underwriting
UBS led the offering. It has been named on 59 SPAC IPOs, book-running 50 of them, and 71.7% of its resolved vehicles closed a deal. The syndicate has no control over whether a sponsor finds a target, but the quality of the book at pricing shapes who ends up holding the units.
Filings per month since the first one. A vehicle that has gone quiet with a deadline ahead is a different proposition from one that is still working.
501 filings in all. 13 in the last three months, against a busiest month of 33.
News on Amprius Technologies, Inc.
Last 90 days- Neutral
- Neutral
- AUSA: Amprius Technologies CEO Tom StepienNeutral
Yahoo · 9d ago
- Amprius Technologies Announces Date for Third Quarter 2026 Results and Business UpdatesNeutral
Yahoo · 11d ago
- Amprius Technologies' Next Big Rally Could Be Taking ShapePositive
Yahoo · 12d ago
- Neutral
- Neutral
- Amprius Technologies: When Batteries Get WingsNeutral
SeekingAlpha · 24d ago
- Neutral
News sentiment
NeutralAcross 12 recent stories, weighted towards the newest. Scored by our own headline classifier using finance- and SPAC-specific terms. It reads what a story is about, not what the shares are worth.
SEC filing history
Free tier: filings older than 24 hours- S-3ASR
S-3ASR
Accession 0001104659-26-115105
- 8-K
Entry into a material definitive agreement
Items 1.01, 9.01 · Accession 0001899287-26-000065
- 4
Statement of changes in beneficial ownership
Accession 0001476220-26-000034
- 144
144 filing
Accession 0001476220-26-000033
- 4
Statement of changes in beneficial ownership
Accession 0001940928-26-000024
- 144
144 filing
Accession 0001940928-26-000023
- 4
Statement of changes in beneficial ownership
Accession 0002067233-26-000019
- 144
144 filing
Accession 0002067233-26-000018
- 144
144 filing
Accession 0001950047-26-008579
- 8-K
Entry into a material definitive agreement
Items 1.01, 2.03, 9.01 · Accession 0001899287-26-000062
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0001595888-26-000085
- 10-Q
Quarterly report
Accession 0001899287-26-000059
- 8-K
Current report
Items 2.02, 9.01 · Accession 0001899287-26-000056
- SCHEDULE 13G/A
Amended beneficial ownership report (passive)
Accession 0002012383-26-002178
- 8-K
Submission of matters to a vote of security holders
Item 5.07 · Accession 0001899287-26-000053
- 4
Statement of changes in beneficial ownership
Accession 0001230569-26-000005
- 4
Statement of changes in beneficial ownership
Accession 0001517394-26-000003
- 4
Statement of changes in beneficial ownership
Accession 0001045434-26-000009
- 4
Statement of changes in beneficial ownership
Accession 0001296381-26-000005
- 4
Statement of changes in beneficial ownership
Accession 0001045434-26-000007
- 144
144 filing
Accession 0001949846-26-000360
- 4
Statement of changes in beneficial ownership
Accession 0002067233-26-000015
- 144
144 filing
Accession 0001950047-26-005630
- 4
Statement of changes in beneficial ownership
Accession 0001476220-26-000029
- 144
144 filing
Accession 0001476220-26-000028
- 4
Statement of changes in beneficial ownership
Accession 0002067233-26-000012
- 144
144 filing
Accession 0002067233-26-000010
- 4
Statement of changes in beneficial ownership
Accession 0001940928-26-000020
- 144
144 filing
Accession 0001940928-26-000018
- 4
Statement of changes in beneficial ownership
Accession 0001045434-26-000005
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Amprius Technologies, Inc.: questions answered
What is Amprius Technologies, Inc. (AMPX)?
Amprius Technologies, Inc. is a special purpose acquisition company incorporated in Delaware and registered with the SEC under CIK 0001899287. It completed its initial public offering in Mar 2022, raising $230M in gross proceeds and listing on NYSE. Class A shares trade under the ticker AMPX, warrants under AMPX-WT on NYSE. The vehicle is sponsored by Kensington through Kensington Capital Sponsor IV LLC. The mandate targets media & entertainment. Business combination closed; the company trades under a new ticker.
How much does Amprius Technologies, Inc. hold in trust?
Approximately $230,294,899, or about $10.01 per public share, as at the most recent filing on record. Trust balances move: shareholders redeem at extension votes and at the combination vote, and sponsors pay contributions in to extend. Treat the figure as a point-in-time disclosure, not a running balance.
When must Amprius Technologies, Inc. complete a merger?
No combination deadline appears in the filings we have indexed. The date is stated in the charter and repeated in each quarterly report; where our parser could not establish it with confidence we leave it blank rather than infer one.
What happens if Amprius Technologies, Inc. does not find a target in time?
The charter requires the vehicle to redeem 100% of the public shares and return the trust, pro rata, to public shareholders. That is the mechanism working as designed rather than a default. Founder shares and warrants are worthless in that outcome, which is why the sponsor's incentive is to get a deal done or to buy more time. Across the market, deadline lapsed without a deal; trust returned to public shareholders.
Can I redeem shares in Amprius Technologies, Inc., and at what price?
Public shareholders may elect to redeem in connection with a combination vote and at each extension vote, at the pro-rata trust value on the relevant record date, most recently disclosed at about $10.01 per share. Redemption is a right attached to the public shares only; warrants and rights carry no claim on the trust. The mechanics and the deadline for electing are set out in the proxy statement for the vote in question.
What tickers does Amprius Technologies, Inc. trade under?
Class A shares trade as AMPX on NYSE, and the warrants as AMPX-WT. Units trade first and separate into their component securities roughly 52 days after the IPO; only the Class A shares carry the redemption right against the trust.
Is the trust value the same as the share price for Amprius Technologies, Inc.?
No, and the gap between them is the whole trade. Trust per share is a disclosed, contractual figure of $10.01, being what a redeeming holder receives. The market price is whatever the shares change hands at: most recently $8.59, a discount of 14.21% to the redemption value. Quotes on this site are delayed and indicative; confirm on your own venue before trading.
Who sponsors Amprius Technologies, Inc., and what is their track record?
Kensington Capital Sponsor IV LLC is the sponsor entity, part of the Kensington franchise. That franchise has launched 9 vehicles in total, of which 8 closed a combination and 0 liquidated, a 100% completion rate on resolved vehicles. Named principals: Justin Mirro.
Which banks underwrote the Amprius Technologies, Inc. IPO?
UBS, Stifel, Robert W. Baird &, Drexel Hamilton. UBS and Stifel were credited as book-running managers on the cover. Syndicate membership and role are read from the prospectus cover and the underwriting section.
Is Amprius Technologies, Inc. tradeable, and where?
Yes. AMPX returned a live quote of $8.59 on NYSE. Quotes here are delayed and refreshed on a schedule rather than streamed, so treat the figure as indicative and confirm on your own venue. Units and warrants trade under their own symbols and are quoted separately.
Is Amprius Technologies, Inc. a good investment?
That is not a question this site answers. Amprius Technologies, Inc. is covered here as reference data: what the company filed, when it filed it, and what the numbers in those filings say. The Edge, FOMO and Potential scores on this page are derived measures with a published formula, not ratings of investment merit: they describe the setup, and every component is shown so you can take them apart. We publish no price targets and no recommendations, and nothing here should be read as advice. The figures are a starting point for your own work, and each one carries the accession number of the filing it came from.
Where does this Amprius Technologies, Inc. data come from?
Filings Amprius Technologies, Inc. submitted to the SEC under CIK 0001899287: the registration statement and final prospectus for the structure, quarterly and annual reports for the trust, current reports and proxy statements for deals, votes and extensions. Trust economics are taken from the registrant's own XBRL tags rather than parsed from prose, which is why they are exact. Every filing in the history above is listed with its accession number, which identifies the document uniquely on EDGAR; Pro accounts open it directly from the row.
Compiled by the SPACListing research desk
Last reconciled Nov 1, 2026
Every figure on this page is read from documents the registrants filed with the U.S. Securities and Exchange Commission, principally the IPO prospectus (Form 424B4), quarterly and annual reports, current reports and proxy statements, the registrant's own XBRL tags for trust economics. Nothing is sourced from press coverage, from the companies themselves, or from a third-party aggregator. Where a filing does not disclose something, the field is left blank rather than estimated.
Read the full methodology · What is in the dataset · Report a correction
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Continue reading
The context around this vehicle: who else the sponsor has launched, which banks priced it, and where it sits in the wider market.
Kensington: the full record
Every vehicle this sponsor has launched, what closed, what liquidated and what is still live.
UBS in SPACs
Mandates, bookrun credit, deal volume and the outcome of the vehicles it priced.
Media & Entertainment SPACs
Every vehicle chasing the same mandate, ranked by cash in trust.
All completed de-spac transactions
Business combination closed; the company trades under a new ticker.
Deadline calendar
Which sponsors are running out of time, and when the extension votes land.
What is a SPAC?
The structure, the economics and where the risks actually sit.
SPAC glossary
Every term in a blank-check filing, defined the way practitioners use it.
How this data is built
Coverage universe, ingestion, normalisation, lifecycle classification and known limits.