Kensington Capital Acquisition Corp. IV
AMPX · NYSE
NO ACTION REQUIRED
Nothing left to do
The purchase completed and the shares became shares in the company it bought. There is no deadline left to miss.
Cash at settlement
No cash-per-share figure was filed for this vehicle before it finished.
Last close
Daily close
No price history on file yet — daily closes accumulate from the market data feed.
Trust settled · There is no line to draw here. This vehicle has finished: the cash was paid back or spent closing the deal, so the last filed figure describes an account that no longer exists and would be a floor under nothing.
SpacBrain’s read
Trust settled
The deal closed — SPAC shares became the target's shares, so there is no trust left to redeem (nobody missed a window; holders who wanted cash elected it at the vote).
In plain terms
- What it is
- A SPAC, listed on NYSE in March 2022.
- What it's doing now
- It agreed to buy Amprius Technologies, Inc., a silicon anode lithium-ion battery manufacturing company. That purchase completed, and it stopped being a SPAC — the shares became shares in the business it bought.
- What you should know
- This SPAC has finished. The purchase completed, and the shares became shares in the company it bought — anyone who wanted the cash instead asked for it at the vote, so there is no cash left here to claim and no deadline left to miss.
At a glance
- Where it stands
- Closed (deSPAC)
- The business it bought
- Amprius Technologies, Inc. — Technologies, Inc.
- Industry
- Consumer Discretionary — silicon anode lithium-ion battery manufacturing
- Deal value
- not stated in the filings we hold
- Price vs cash at settlement
- no live price on file
- Cash in trust when it settled
- not yet extracted into a snapshot — the filings below may state it
- the last trust total filed while this was still a SPAC — the account has since been paid out or used to close the deal
- IPO
- 2 March 2022
- size not on file
- Headquarters
- 1180 PAGE AVENUE, FREMONT, CA, 94538
- registered in Delaware
- Lead underwriter
- not extracted from the prospectus yet
- Key officers
- BAYLESS KATHLEEN A (Director) · SATTERTHWAITE LIVINGSTON (Director) · DIXON DONALD R (Director)
- Listed securities
- AMPX common
This vehicle has finished, so there is no window to file a cash-per-share figure for and none will follow. No estimate is shown in its place.
Nothing dated is on file. That is an absence in the record, not a statement that nothing is coming.
Yield to redemption
Nothing left to redeem — no yield to compute.
This SPAC has finished — its trust was paid back or used to close the deal, so there is nothing left to redeem and no yield to compute. A yield to redemption is a claim that you can hand these shares back for the trust cash. That account is closed, so this page will not print a number here.
What happened to the cash
The reasoning behind the verdict above, in the order the filings establish it.
- The deal closed — SPAC shares became the target's shares, so there is no trust left to redeem (nobody missed a window; holders who wanted cash elected it at the vote).
What has happened, and what is coming
1 dated milestoneEvery dated step from the day it listed to the next date you may have to act on. Where you have to do something, the day your broker needs the instruction is marked too.
- 2 March 2022IPOpassed
IPO size not on file
The deal
terms as filedWhat it is buying, on what terms, and how much of the combined company new shares take from you.
- closedConsumer Discretionary
What Amprius Technologies, Inc. does — read from amprius.com on 26 August 2026
Amprius Technologies manufactures high-energy density silicon anode batteries for industries including aviation, robotics, and e-mobility. The company operates a manufacturing site in Fremont and has partnerships in China, Asia, and Europe.
FremontAviationRoboticsE-mobilityBattery technology
The score
deterministic, from filed fieldsAMPX is not in the scored universe, so no score is shown. A withheld score is a fact about the record, not a verdict about the company.
The score is only published for names that carry both a price and a filed cash-per-share figure — 294 of the tracked fleet today. The rest keep an empty dial rather than a modelled one, and fill in by themselves as the fields land.
The company
from SEC filingsRead the full profile
Kensington Capital Acquisition Corp. IV was a blank-check company whose common stock traded on the New York Stock Exchange under the ticker AMPX. The company priced its initial public offering on March 2, 2022, under SEC file number 333-262266, pursuant to a registration statement on Form S-1 filed January 20, 2022. The registrant self-described as a blank-check company in its 424B4 prospectus and was classified under SIC industry code 3690 (Miscellaneous Electrical Machinery, Equipment & Supplies). The ticker AMPX appeared on the cover page of an 8-K filed September 14, 2022. The vehicle completed a business combination and no longer files; Form 25 was filed on September 15, 2022 under 17 CFR 240.12d2-2(a)(3), reflecting that its securities had come to evidence other securities in substitution therefor. EDGAR now lists CIK 0001899287 under the name Amprius Technologies, Inc.
Material findings
from the full read of every filingEvery document this company files gets read whole — body and exhibits. These are the ones the read flagged as material, newest first, each citing its filing.
The company has committed to this facility for seven additional years beyond the prior June 30, 2027 expiry, at a rent schedule fixed through June 2034. The two five-year renewal options are unexercised.
Revenue growth is accelerating driven by SiCore battery sales, and gross margin improved to 27% from 9% YoY, suggesting improving operating leverage. The warrant exchange reduces future dilution and the lease termination eliminates a significant non-cash lease obligation ($33.2M liability derecognized), streamlining the balance sheet.
This retires warrants rather than issuing new capital: up to 3,092,900 shares are offered for the Private Warrants, about 2.8% of the shares outstanding after the exchange, against Private Warrants exercisable at $11.50 each. As of June 18, 2024 there were 15,900,000 Private Warrants outstanding; Kensington Capital Partners, LLC has agreed under a tender and support agreement to tender the 4,700,000 it holds, while director Justin Mirro has waived participation as to his 200,000. Completion is not conditioned on any minimum tender, so the offer closes at whatever level it draws.
This retires sponsor-side warrants only. As of June 18, 2024 there were 15,900,000 Private Warrants outstanding, each exercisable at $11.50 under the Warrant Agreement dated March 1, 2022; Kensington Capital Partners, LLC holds 4,700,000 and has agreed to tender them under a Tender and Support Agreement, while director Justin Mirro has waived his right to participate for the 200,000 he holds directly. Up to 3,092,900 shares are offered, which the filing puts at 2.8% of the shares outstanding after the offer.
The stated purpose is corporate rather than commercial: the filing says the mergers are intended to improve corporate governance and enhance Amprius's public float and liquidity. The exchange is deliberately discounted — on an assumed Discounted Exchange Ratio of 0.7056, the Per Share Merger Consideration is expected to comprise 29,363,779 shares of Amprius common stock and 28,606,816 shares of Amprius non-voting common stock. Holdco warrants are cancelled and replaced on a net exercise basis, with the aggregate exercise price divided by $8.71.
The exchange is at a discount and the filing names it as such: on an assumed Discounted Exchange Ratio of 0.7056, the Per Share Merger Consideration is expected to comprise 29,363,779 shares of Amprius common stock and 28,606,816 shares of Amprius non-voting common stock, so roughly half of what is issued carries no vote. Nine series of Holdco preferred convert first, voting series into Class A and non-voting series into Class B common stock. Holdco warrants are replaced on a net-exercise basis using $8.71 as the divisor for their aggregate exercise price.
Show 4 more material filings
The exchange ratio is not in this document. Each outstanding Amprius common share is cancelled and converted into a number of Kensington shares determined by reference to an Exchange Ratio calculated in accordance with the Business Combination Agreement, and Kensington undertakes to file a Current Report on Form 8-K announcing the final Exchange Ratio no later than four business days prior to its extraordinary general meeting. A reader cannot price this deal from the registration statement; the number that fixes it is published separately, days before the vote.
The exchange ratio is deliberately absent rather than merely blank: the letter states that Kensington will file a Current Report on Form 8-K announcing the final Exchange Ratio no later than four business days before the extraordinary general meeting. Shareholders are therefore being asked to approve a transaction whose per-share consideration will only be published days before the vote, and any figure taken for this deal must come from that 8-K rather than from the registration statement. All securities registered here are issued by the post-Domestication Delaware entity.
The exchange ratio does not exist yet at this filing. Each Amprius share converts into a number of Kensington shares set by an Exchange Ratio calculated under the agreement, and the company undertakes to announce the final ratio on a Form 8-K no later than four business days before the shareholder meeting — so no per-share consideration can be read from this document, and none is recorded. The two sides also approve differently: Kensington holds an extraordinary general meeting, whose date and webcast address are blank, while Amprius seeks an irrevocable written consent from its stockholders.
The consideration is deliberately not fixed in this document. Kensington states it will file a Current Report on Form 8-K announcing the final Exchange Ratio no later than four business days before the extraordinary general meeting, so no share count and no dilution figure can be taken from the S-4 itself, and none is recorded. Two unit classes trade at once, listed on the NYSE as KCAC.U, KCA.U, KCAC and KCAC.W, which any instrument-level matching has to keep apart.
Filings
live EDGAR feedEverything this company has filed with the SEC recently, newest first, each with a plain summary of what changed and why it matters.
What changed: Exhibit 10.1 to an 8-K of Amprius Technologies, Inc.: a Second Amendment to Industrial Lease dated August 7, 2026 with Los Altos Fields, LLC covering approximately 51,000 rentable square feet at 1000–1180 Page Avenue, Fremont, California. The lease had been scheduled to expire June 30, 2027; the term is extended 84 months from a July 1, 2027 commencement to a new expiration of June 30, 2034. All previous extension options are deleted and replaced with two five-year options at then-current fair market rent, floored at the rent payable in the last month of the extended term. Why it matters: The company has committed to this facility for seven additional years beyond the prior June 30, 2027 expiry, at a rent schedule fixed through June 2034. The two five-year renewal options are unexercised.
What changed: Amprius Technologies (formerly Kensington Capital Acquisition Corp. IV) filed its Q2 2026 10-Q showing revenue of $34.0M for Q2 and $62.6M for 1H 2026, up 126% and 137% YoY respectively, with net loss narrowing to $3.2M in Q2 from $6.4M prior year. The company terminated its Brighton, Colorado lease for a $20.0M one-time payment and conducted a cashless exchange of 7.1M public warrants for 2.7M shares, reducing outstanding warrants from 18.8M to 10.5M. Why it matters: Revenue growth is accelerating driven by SiCore battery sales, and gross margin improved to 27% from 9% YoY, suggesting improving operating leverage. The warrant exchange reduces future dilution and the lease termination eliminates a significant non-cash lease obligation ($33.2M liability derecognized), streamlining the balance sheet.
What changed: 8-K of Amprius Technologies, Inc. Item 2.02 (results of operations and financial condition): on August 4, 2026 the Company announced its business and financial results for the fiscal second quarter ended June 30, 2026, with the earnings release furnished as Exhibit 99.1. The Item 2.02 information and Exhibit 99.1 are not deemed filed for Section 18 purposes nor incorporated by reference. The report adds that the contents of any website or hyperlink mentioned in the release are informational only and not part of it. Signed by CFO Ricardo C. Rodriguez. Why it matters: Routine quarterly earnings furnishing; the report states no figure. Its one distinctive term is the express disclaimer of hyperlinked website content, which narrows what the release itself is asserting.
Show the other 10 filings
The sponsor
The people who set this company up, what they have done before, and the advisers around the deal.
No sponsor entity is named in the filings parsed for this SPAC so far.
A missing score, not a score of zero — why
A Sponsor Score is only published once the sponsor’s prior vehicles have been verified on EDGAR and their post-close outcomes priced. That record does not exist for this sponsor yet, so no number and no tier is shown. That is a missing score, not a score of zero — and not a neutral 50 either.
Coverage so far: 301 of 1284 tracked SPACs (23%) are attached to a scored sponsor. This card fills in by itself as the research lands.
The record
The reference detail — how the shares were structured at listing, how thinly they trade, and where the company is registered.
Show the reference detail
Unit structure
from 424B3 0001193125-24-176335
Trading & liquidity
Company profile
Directors & officers
- BAYLESS KATHLEEN ADirector
- SATTERTHWAITE LIVINGSTONDirector
- DIXON DONALD RDirector
- Chu StevenDirector
- Stepien Thomas MChief Executive Officer
- Sun KangDirector
- Stefan Constantin IonelChief Technology Officer
Institutional holders
from SC 13G/13DFunds that have declared a stake above 5%. Heavy ownership by arbitrage funds usually means heavy cash-outs at the next vote.
Show the declared stakes
8 filers with a stake on file · 0 re-affirmed in the last 12 months. A stake with no amendment since is the filer’s last word on it, not proof it is still held — and percentages filed in different years are percentages of different floats, because this vehicle’s share count collapses at every redemption.
- Kensington Capital Sponsor IV LLCwith 2 other reporting persons on the same schedule9.7% · SC 13D/ASep 23, 2022 stale
- SAIF Partners IV L.P.with 3 other reporting persons on the same schedule7.6% · SC 13GOct 28, 2024 stale
- Dryden Capital, LLC7.6% · SC 13GMar 11, 2022 stale
- DIXON DONALD Rwith 4 other reporting persons on the same schedule7.1% · SC 13DOct 28, 2024 stale
- Sun Kang6.8% · SC 13DOct 25, 2024 stale
- SALZMAN ALAN E6.7% · SC 13GOct 25, 2024 stale
- Amprius, Inc.2.4% · SC 13D/AOct 25, 2024 stale
- Wealthspring Capital LLCwith 4 other reporting persons on the same schedule0.0% · SC 13G/AOct 7, 2022 stale
One line per filer, not per reporting person: a joint schedule names the management company, its funds and often the individual who controls them, and all of them report the same shares. Click a name for that filer’s whole footprint across every SPAC it has declared a stake in.
News
company wires and the financial pressReporting we have matched to this ticker. Headlines belong to the outlets that wrote them.
Show the headlines
- AMPRIUS TECHNOLOGIES, INC. MERGES WITH KENSINGTON CAPITAL ACQUISITION CORP. IV TO POWER THE FUTURE OF ELECTRIC MOBILITY
PR Newswireundated by the source
Sources on file
harvested pages, kept in fullEvery public page we have read about this company, stored in full so a source can never go missing.
Show the sources
31 full SEC filing texts archived — searchable, never lost.
- Vault note — AMPX (Kensington Capital Acquisition Corp. IV)
vault-note · /vault/tickers/AMPX
- Vault deal note — Amprius Technologies, Inc. (AMPX)
vault-note · /vault/deals/amprius-technologies-inc
- AMPRIUS TECHNOLOGIES, INC. MERGES WITH KENSINGTON CAPITAL ACQUISITION CORP. IV TO POWER THE FUTURE OF ELECTRIC MOBILITY
news · prnewswire.com
- Amprius Technologies - 2026 Company Profile, Team, Funding, Competitors & Financials - Tracxn
news · tracxn.com
- Amprius Technologies, Inc. Company Overview, Contact Details & Competitors | LeadIQ
news · leadiq.com
- News and Events | Amprius Technologies
company-site · amprius.com
- About Us | Amprius Technologies
company-site · amprius.com
- Our Solutions | Amprius Technologies
company-site · amprius.com
- Home | Amprius Technologies
company-site · amprius.com
In plain English
tap a term to open itEvery piece of jargon this page could have used, and what it actually means.
Open the plain-English guide
No floor / floorlessthe cash guarantee is gone — the price is unprotected
A SPAC's downside protection is not the cash in trust; it is your right to demand that cash. Once the redemption window closes, the cash stays with the company and the share can trade anywhere.
Redemption deadlinethe last day to hand shares back for cash
Set by the filing that calls the meeting. Tender after it and the company is under no obligation to pay you the trust value.
Broker action datethe day your broker needs the instruction — earlier than the official date
Brokers batch redemption instructions to the transfer agent, so the practical cutoff is roughly two business days before the published deadline. This is the date that actually costs people the floor.
Cash in trust / trust per sharethe cash the company is holding for each public share
Filed quarterly in the 10-Q's XBRL. It earns interest between filings, so the figure on a given day is slightly higher than the last filed one — where we show that we label it an estimate.
Trust discountbuying below the cash held for you
Only meaningful while a redemption right exists. On a floorless name the same arithmetic is not a discount, it is the market pricing distress, and this product will not call it a yield.
Dilutionhow much of the company new shares take from you
Sponsor promote, PIPE shares, warrants and rights all issue stock that did not pay $10 for it. The headline deal value is before that; the effective value is after.
Pro-forma equitywhat the company is valued at once the deal closes
The combined company's equity value assuming the announced terms and the redemptions that have actually happened.
ARShow much upside you get per unit of downside
SpacBrain's asymmetric-return score. It is deterministic — the same inputs always produce the same number — and it is capped, not zeroed, when the floor is gone.
De-SPACthe day the SPAC becomes the real company
The shares stop being a claim on a pot of cash and start being equity in an operating business. Roughly 80% of recent de-SPACs traded below $10 within a year.
Outside datethe contractual long-stop for closing the deal
A deadline between the SPAC and its target, not between the SPAC and you. It confers no right to cash, which is exactly why it must never be counted as a redemption window.
Accession numberthe SEC's unique id for one filing
Every figure on this page carries the accession of the filing that states it, so you can open the primary document rather than trust us.
Accreted NAV (estimate)the last filed cash figure, plus the interest it should have earned since
A model, not a filing: last filed value compounded at the 3-month T-bill for the days elapsed. Always shown in italic with the word estimate, and never printed beside a filed number without it.
Ask the brain
from its filingsData provenance & audit trail3 internal entries
Written by SpacBrain’s data agents whenever a figure is captured, corrected or flagged, and kept verbatim so every number on this page can be traced back to the filing that states it. This is a running log, not the current record: an early entry may be superseded by a later correction — the panels above always hold the current values.
admitted from EDGAR's QUARTERLY FORM INDEX, walked without any SIC filter. The SIC 6770 census could not reach this registrant: EDGAR reassigns a shell's SIC the day it stops being one, and this CIK now files under 3690 (Miscellaneous Electrical Machinery, Equipment & Supplies). The screen found it by filing SHAPE instead — S-1 2022-01-20 → 8-A12B 2022-03-01 → 424B4 2022-03-02 — which nothing rewrites. Admission rule: src/lib/universe-admit.ts. SIC 3690 + self-described blank check in 424B4 0001193125-22-061850; 424B 0001193125-22-061850 priced 2022-03-02 under S-1 0001193125-22-013880 (file 333-262266, an offering for cash); common ticker AMPX off 8-K 0001193125-22-244830 (2022-09-14); lifecycle EXITED. The pricing prospectus was filed under SEC file number 333-262266, which belongs to S-1 0001193125-22-013880 (2022-01-20) — a registration of shares sold for CASH, which is what makes it an IPO rather than merger consideration. Blank-check status from the registrant's own first-person sentence in that prospectus (EDGAR full-text search, 424B4 2022-03-02). Ending PROVEN, not inferred: CLOSED per Form 25 0000876661-22-000753 (2022-09-15) — Form 25 filed under 17 CFR 240.12d2-2(a)(3) — the rule for securities that "have come to evidence other securities in substitution therefor", i.e. the shares became the successor's (class: Kensington Capital Acq. Corp. IV: Units, New Units, and Class 2 Redeemable Warrants). EDGAR now files this CIK as "Amprius Technologies, Inc." — the SPAC's own name is kept here and the successor is the target. ipoSizeM and deadline left NULL: gross-proceeds prose conflates the over-allotment with the offering, and a charter deadline belonging to a vehicle that has ended is a date nobody can act on. ipoDate is the 424B pricing date.
[CLOSED-RENAME] EDGAR CIK 0001899287 records "Kensington Capital Acquisition Corp. IV" ending 2022-09-14; the registrant continues as "Amprius Technologies, Inc.". The rename is the SEC's own record of what the vehicle became, keyed by CIK. Closed 2022-09-14. No deal value is set — a rename says what was acquired, never for how much. No date column is set: Deal has announcedAt, voteDate and expectedCloseAt and nowhere to record an actual close, so the SEC's date is kept here until that column exists. [DEAL-STRUCTURE-MINED] terminationFeeM=20 from primary filings (0001899287-26-000005).
OTHER -> BATTERY, on S-4/A 0001193125-24-174617: "We develop, manufacture and market lithium-ion batteries for mobility applications, including the aviation and electric vehicle industries."