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Lakeshore Acquisition I Corp.

LAAA · Nasdaq

Trust settledProSomnus Holdings Inc. · Finished

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.

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 from RedOne Investment Limited, listed on Nasdaq in June 2021.
What it's doing now
It agreed in November 2022 to buy ProSomnus Holdings Inc., a Medical device company developing precision intraoral sleep apnea treatment devices company. The deal valued that business at about $113M. 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
ProSomnus Holdings Inc.
Industry
Medical device company developing precision intraoral sleep apnea treatment devices
Deal value
$113M
announced 15 November 2022
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
14 June 2021
size not on file · 100.0% of each $10 unit into trust
Headquarters
SUITE A-2F, 555 SHIHUI ROAD, SHANGHAI, F4, 201100
registered in the Cayman Islands
Lead underwriter
not extracted from the prospectus yet
Key officers
Chen Deyin (Chief Executive Officer) · Sherman H. David (Director) · Zhu Yan (Director)
Listed securities
LAAA common
Cash held per sharenot filed for this window

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.

Next date that mattersno dated event on file

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.

  1. 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

2 dated milestones

Every 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.

  1. 14 June 2021IPOpassed

    IPO size not on file

  2. 15 November 2022Deal announcedpassed

    Combination with ProSomnus Holdings Inc.


The deal

terms as filed

What it is buying, on what terms, and how much of the combined company new shares take from you.


The score

deterministic, from filed fields

LAAA 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.

Asymmetric return scoreNeither a price nor a cash-per-share figure is on file for this vehicle, and the score is a ratio between the two. Nothing is estimated to fill the gap.

The score is only published for names that carry both a price and a filed cash-per-share figure — 292 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.

See the names that are scored, and how


The company

from SEC filings
Read the full profile

Lakeshore Acquisition I Corp. was a blank-check company whose common stock traded on Nasdaq under the ticker LAAA. The company priced its IPO on June 14, 2021, as reflected in 424B prospectus 0001104659-21-080641, and its SEC CIK is 0001848000. Its lifecycle is closed: on December 6, 2022, Form 25 0001354457-22-000685 was filed under 17 CFR 240.12d2-2(a)(3), indicating that its Ordinary Share, Warrant, and Unit had come to evidence other securities in substitution therefor. The successor registrant, ProSomnus, Inc. (CIK 0001934064), filed an 8-K with item 2.01 (Completion of Acquisition) naming Lakeshore Acquisition I Corp., confirming that the vehicle completed a business combination and no longer files.


Material findings

from the full read of every filing

Every 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.

  • Closing Net Indebtedness as of October 31, 2022 was $14.9 million, so on that measure the deduction is already live and the consideration is below the headline. Lakeshore must make at least $40,000,000 available to ProSomnus immediately after closing, but the document states ProSomnus has the right to waive the Minimum Cash Condition, so there is no guarantee PubCo holds some or all of it. Shares equal to 3.0% of the Merger Consideration are escrowed for post-closing adjustments, and up to 3.0 million earn-out shares vest in three tranches at VWAP thresholds of $12.50, $15.00 and $17.50.


Filings

live EDGAR feed

Everything this company has filed with the SEC recently, newest first, each with a plain summary of what changed and why it matters.

Show the other 10 filings
  • What changed: Definitive proxy statement/prospectus of Lakeshore Acquisition I Corp., dated November 14, 2022 and first mailed on or about that date, for an extraordinary general meeting on December 2, 2022 at 10 a.m. Eastern Time. The merger agreement dated May 9, 2022 effects the ProSomnus Holdings Inc. business combination in two steps: Lakeshore reincorporates into Delaware by merging into LAAA Merger Corp. (PubCo), then LAAA Merger Sub Inc. merges into ProSomnus. The Merger Consideration is $113,000,000 in PubCo stock, less the amount by which Closing Net Indebtedness exceeds $12,000,000. Why it matters: Closing Net Indebtedness as of October 31, 2022 was $14.9 million, so on that measure the deduction is already live and the consideration is below the headline. Lakeshore must make at least $40,000,000 available to ProSomnus immediately after closing, but the document states ProSomnus has the right to waive the Minimum Cash Condition, so there is no guarantee PubCo holds some or all of it. Shares equal to 3.0% of the Merger Consideration are escrowed for post-closing adjustments, and up to 3.0 million earn-out shares vest in three tranches at VWAP thresholds of $12.50, $15.00 and $17.50.

    minimum cash condition, outside datenothing moved · 2 with no prior record of ours
    Minimum cash condition
    not previously extracted$40.0M

    SpacBrain reads this as the min-cash condition binds at $40,000,000.

    The clause “22, the board of directors of ProSomnus insisted that the transaction include a Minimum Cash Condition of $40 million in order to meet ProSomnus’s balance sheet needs and better facilitate its continued operations. On March 4, 2022,”…

    Outside date
    not previously extracted2022-12-10

    SpacBrain reads this as the agreement may be terminated from 2022-12-10.

    The clause …“to the Closing set forth in ARTICLE VII have not been satisfied or waived by December 10, 2022 (the “ Outside Date ”) ( provided , that if Purchaser seeks and obtains an Extension, Purchaser shall have the right by providing written”…

    Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.

  • What changed vs 2022-08-15trust $54.8M → $29.1M -47%
    trust account, combination deadline, going-concern doubt +11 moved · 3 with no prior record of ours
    Trust account
    $54.8M$29.1M

    SpacBrain reads this as $25,606,760 left the trust between the two filings.

    The clause …“​ ​ — ​ ​ 63,708 Other current assets ​ ​ 135,000 ​ ​ — Marketable securities held in trust account ​ ​ 29,144,536 ​ ​ 54,671,966 Total Current Assets ​ 29,430,459 ​ 55,174,587 Total Assets ​ $ 29,430,459 ​ $ 55,174,587 ​ ​ ​ ​ ​ ​ ​”…

    Combination deadline
    not previously extracted2022-12-15

    The clause “Company not continuing as a going concern, as a result of failing to consummate business combination before December 15, 2022. Management plans to continue its efforts to consummate a business combination within the required period.”…

    Going-concern doubt
    stated · unchanged

    The clause …“obligations under applicable laws or regulations. This uncertainty raises substantial doubt about the Company’s ability as a going concern one year from the date the financial statement is issued. No adjustments have been made to”…

    Redeemable shares
    5.47Mnot matched in this filing

    Read from stored SEC filing text by a regex — no model is involved — and each side links to the filing it came from. “Not previously extracted” is a statement about our record, not about the company: the clause may be present in wording we do not match.


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

Cash in trust at IPO$10.00

Unit: U = S + W · 100.0% of the $10 unit

from 424B4 0001104659-21-080641

Trading & liquidity

Average daily volume (20d)no volume reported on the bars we hold
Average daily $ volumeneeds both volume and a live price
Range over the bars heldnot enough price history
Total cash in trustthe trust total is not in the last XBRL stamp

Company profile

Industry (SIC)Blank Checks (6770)
Registered inthe Cayman Islands
Exchange · CIKNasdaq · 0001848000

All filings on EDGARopens on sec.gov in a new tab

Directors & officers


Institutional holders

from SC 13G/13D

Funds 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

3 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.

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.


Sources on file

harvested pages, kept in full

Every public page we have read about this company, stored in full so a source can never go missing.

Show the sources

38 full SEC filing texts archived — searchable, never lost.


In plain English

tap a term to open it

Every 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 filings
Data provenance & audit trail5 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.

LAAA — company record
UNIVERSE-HISTORY2026-08-16

admitted from the HISTORICAL census (EDGAR's SIC 6770 registrant list, walked in full: 3,325 registrants, 1,167 of which ever priced an IPO). The live discovery job cannot reach this registrant — it reads the filing tape, and this one stopped filing. Admission rule: src/lib/universe-admit.ts. SIC 6770 (Blank Checks); 424B 0001104659-21-080641 priced 2021-06-14; common ticker LAAA off 8-K 0001104659-22-124115 (2022-12-02); lifecycle EXITED. Ending PROVEN, not inferred: CLOSED per Form 25 0001354457-22-000685 (2022-12-06) — 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: Ordinary Share, Warrant, Unit); the successor registrant ProSomnus, Inc. (CIK 0001934064) filed an 8-K carrying item 2.01 (Completion of Acquisition) naming "Lakeshore Acquisition I Corp." — the SPAC merged into a new registrant and so filed no closing report of its own. 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.

SPONSOR-ID2026-08-14

sponsor "RedOne Investment Limited" sourced from prospectus definition (10-K) acc 0001410578-22-000797.

Deal — ProSomnus Holdings Inc.
DEAL-TARGET2022-11-15

AI-extracted target (z-ai/glm-5.2, conf 0.98)

BACKFILL2026-08-26

target recovered for a completed de-SPAC

PROFILE-STUB2026-08-27

entity created from the filed target name; no About paragraph on file, so every other field awaits a sourced read

Also listed inSPACs with warrants