UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or ~~Section~~ 15(d) of the Securities Exchange Act of 1934

Date of ~~the~~Report ~~Securities~~(Date ~~Exchange~~of ~~Act~~earliest ofevent reported): ~~1934~~June 13, 2025

Date of Report (Date of earliest event reported): June 3, 2025

CROWN PROPTECH ACQUISITIONS

(Exact ~~Name~~name of ~~Registrant~~registrant as ~~Specified~~specified in ~~its~~ ~~Charter~~its charter)

Cayman Islands		001-40017		N/A
(State or other jurisdiction of incorporation or organization)		(Commission File Number)		(I.R.S. Employer Identification ~~Number~~No.)

40 West 57th Street, 29th Floor New York, NY		10019
(Address of Principal Executive Offices)		(Zip Code)
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (212) 796-4796

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation toof the registrant under any of the following provisions:

☒ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Redeemable warrants, each whole warrant exercisable for one Class A ordinary share, par value $0.0001		CPTKW		N/A

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 74.01. ~~Regulation~~Changes FDin ~~Disclose~~Registrant’s Certifying Accountant.

AsOn ~~previously disclosed~~June 13, ~~on January 7,~~ 2025, Crown PropTech Acquisitions, a Cayman Islands exempted company (the “~~CPTK~~Company”), ~~entered~~was ~~into~~notified athat ~~non-binding~~Marcum ~~letter~~LLP ~~of intent~~ (“Marcum”) resigned as ~~amended~~the onCompany’s ~~March~~independent ~~23,~~registered ~~2025~~public ~~and~~accounting ~~April~~firm. 29On November 1, ~~2025~~2024, ~~the~~ CBIZ CPAs P.C. (“~~LOI~~CBIZ CPAs”) acquired ~~with~~the ~~wholly~~attest ~~owned~~business ~~subsidiaries~~ of ~~Mkango~~Marcum ~~Resources~~LLP ~~Ltd.~~ (“~~Mkango~~Marcum”) ~~related to a potential business combination transaction~~. ~~The~~Substantially ~~LOI~~all ~~was~~of ~~subsequently~~the ~~amended~~partners onand ~~May~~staff ~~22,~~that ~~2025~~provided ~~to,~~attestation services ~~among~~with ~~other~~Marcum ~~things,~~joined ~~extend~~CBIZ ~~exclusivity~~CPAs. ~~through~~On June 3013, 2025., ~~CPTK~~with ~~and~~the ~~Mkango~~approval ~~continue~~of tothe ~~work~~audit ~~together~~committee, ~~and~~CBIZ ~~negotiate~~CPAs inwas ~~good~~engaged ~~faith~~as tothe ~~finalize~~Company’s independent ~~and~~registered ~~execute~~public ~~definitive~~accounting ~~documentation~~firm ~~related~~for ~~to a~~the ~~potential~~years ~~business~~ended ~~combination~~December ~~(the~~31, ~~“Merger”)~~2023 and 2024.

OnThe ~~June~~Company’s consolidated 3,financial ~~2025~~statements as of and for the fiscal years ended December 31, ~~Mkango~~2024 and 2023 when issued aare ~~press~~not ~~release~~expected have an ~~announcing~~adverse ~~that~~opinion ~~its~~or ~~wholly~~a ~~owned~~disclaimer ~~subsidiary~~of opinion, ~~Lancaster~~and ~~Exploration~~are ~~Limited~~not ~~(“Lancaster”),~~expected ~~had~~to ~~entered~~be ~~into~~qualified aor ~~$750~~modified as to uncertainty,~~000~~ ~~Note~~audit scope, or accounting ~~Purchase~~principles ~~Agreement~~other ~~(the~~than ~~“NPA”)~~an ~~with~~explanatory ~~one~~paragraph ~~sponsor~~regarding (the ~~“F-4~~Company’s ~~Note~~ability ~~Investor”)~~to ~~and~~continue anas ~~affiliate~~a ofgoing ~~the~~concern ~~other~~and ~~sponsor~~material weaknesses ~~(the~~in ~~“BCA~~internal ~~Note~~control ~~Investor”)~~over offinancial ~~CPTK~~reporting inas ~~connection~~described ~~with~~further ~~the Merger~~below.

~~Pursuant~~During the toCompany’s ~~the~~fiscal ~~NPA,~~years ~~Lancaster~~ended ~~has~~December ~~agreed~~31, to2024 ~~issue~~ and ~~sell~~2023, ~~two~~and ~~convertible~~the ~~promissory~~subsequent ~~notes~~period through June 13, ~~one~~2025, tothere ~~the~~were ~~BCA~~no ~~Note~~(i) “disagreements” ~~Investor~~(as defined in Item 304(a)(1)(iv) ~~principal~~of ~~amount~~Regulation ofS-K ~~$500,000~~and (the ~~“BCA~~related ~~Note”~~instructions) between the Company and Marcum ~~one~~on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the ~~F-4~~satisfaction ~~Note~~of ~~Investor~~Marcum inwould ahave ~~principal~~caused ~~amount~~Marcum to make reference to the subject matter of ~~$250~~the disagreement in their reports on the financial statements for such years,~~000~~ or (~~the~~ii) “~~Form~~reportable ~~F-4 Note~~events” (as defined in Item 304(a),(1)(v) ~~upon~~of Regulation S-K) except for the ~~satisfaction~~material ofweaknesses ~~different~~in our internal control over financial reporting related to the Company’s accounting ~~sets~~for ofcomplex ~~conditions~~financial instruments and review procedures around key reconciliations including accruals and payables.

~~The~~In ~~BCA Note Investor has deposited $500,000 into~~accordance ~~escrow~~with ~~pursuant~~Item to304(a)(3) ~~that~~of ~~certain~~Regulation ~~Escrow Agreement~~S-K, ~~dated~~the ~~June~~Company 2,has ~~2025,~~provided byMarcum ~~and~~with ~~among~~a ~~Lancaster,~~copy ~~CPTK,~~of the ~~BCA~~foregoing ~~Investor~~disclosures and ~~Continental~~has ~~Stock~~requested that ~~Transfer~~Marcum &furnish ~~Trust~~the Company, ~~as escrow agent,~~ with ~~the~~a ~~release~~letter ofaddressed ~~such $500,000~~ to ~~Lancaster pending~~ the ~~satisfaction~~Securities ofand ~~certain~~Exchange ~~conditions, including~~Commission ~~the~~stating ~~execution~~whether ofMarcum aagrees ~~definitive~~with ~~business~~the ~~combination~~statements made ~~agreement~~by ~~for~~ the ~~Merger~~Company ~~(the~~set ~~“BCA”)~~forth ~~and~~above. ~~approval~~A bycopy ~~the~~of ~~TSX Venture~~Marcum’s ~~Exchange~~letter, ~~(“TSX-V”)~~dated ofJune ~~the~~13, ~~potential~~2025, ~~conversion~~is offiled ~~the~~as ~~BCA~~Exhibit ~~Note~~16.1 ~~into~~to ~~shares~~this ofCurrent ~~Lancaster~~Report on Form 8-K.

~~The~~During the ~~Form~~fiscal ~~F-4~~years ~~Note~~ended isDecember ~~expected~~31, to2024 beand ~~issued~~2023, ~~following~~ and the ~~execution~~subsequent ofperiod ~~the~~through ~~BCA~~June ~~and~~13, ~~subject~~2025, toneither ~~TSX-V~~the ~~approval~~Company, ofnor ~~the~~any ~~potential~~party on ~~conversion~~behalf of the ~~Form~~Company, ~~F-4~~consulted ~~Note~~with ~~into~~CBIZ ~~shares~~CPAs with respect to either (i) the application of ~~Lancaster,~~accounting ~~upon~~principles to a specified transaction, either completed or proposed; or the ~~submission~~type of aaudit ~~registration~~opinion ~~statement~~that onmight ~~Form~~be ~~F-4~~rendered ~~with~~on the ~~U.S.~~Company’s ~~Securities~~financial statements, and ~~Exchange~~no ~~Commission~~written report or oral advice was provided to the Company by CBIZ CPAs that CBIZ CPAs concluded was an important factor considered by the Company in reaching a decision as to the accounting, auditing or financial reporting issue, or (ii) any matter that was either the subject of a “~~SEC~~disagreement” (as defined in Item 304(a)(1)(iv) ~~covering~~of Regulations S-K and the related instructions) or a “reportable ~~issuance~~event” of(as ~~share~~defined ~~consideration~~in ~~pursuant~~Item to304(a)(1)(v) ~~the~~of ~~Merger~~Regulation S-K).

AItem ~~copy of the press release is attached as Exhibit 99~~9.101 ~~hereto~~Changes ~~and~~in ~~incorporated~~Registrant’s byCertifying ~~reference herein~~Accountant.

~~The information in this Item 7.01, including Exhibit 99.1, is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended~~ (~~the “Exchange Act”~~d), or otherwise subject to liabilities under that section, and shall not be deemed to be incorporated by reference into the filings of CPTK under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filings.Exhibits

Additional Information and Where to Find It

Exhibit No.		Description of Exhibits

16.1		Letter from Marcum dated June 13, 2025
104		Cover Page Interactive Data File (embedded within the Inline XBRL documents).

If a definitive agreement is entered into in connection with the Merger, Lancaster and CPTK will prepare a registration statement, including a proxy statement/prospectus, to be filed with the SEC. The proxy statement/prospectus will be mailed to CPTK’s shareholders. CPTK urges investors and other interested persons to read, when available, the proxy statement/prospectus, as well as other documents filed with the SEC, because these documents will contain important information about the Merger. Such persons can also read CPTK’s filings with the SEC for a description of the security holdings of its officers and directors and their respective interests as security holders in the consummation of the transactions described herein. The proxy statement statement/prospectus, once available, can be obtained, without charge, at the SEC’s web site at www.sec.gov. In addition, the documents filed by Lancaster and CPTK may be obtained free of charge by directing a request to Michael Minnick, Chief Executive Officer, 40 West 57th Street, 29th Floor New York, NY, or by telephone at (212) 796-4796.SIGNATURE

1Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

~~Participants~~Dated: inJune ~~the~~13, ~~Solicitation~~2025

~~Lancaster~~CROWN ~~and~~PROPTECH ~~CPTK~~ACQUISITIONS ~~and~~By: their respective directors, executive officers and other members of their management and employees, under SEC rules, may be deemed to be participants in the solicitation of proxies of CPTK’s shareholders in connection with the Merger. Investors and security holders may obtain more detailed information regarding the names, affiliations and interests of CPTK’s directors and officers in CPTK’s SEC filings. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies to CPTK’s shareholders in connection with the Merger will be set forth in the proxy statement/~~prospectus for the Merger when available. Information concerning the interests of Lancaster’~~s ~~and CPTK’s participants in the solicitation, which may, in some cases, be different than those of their respective equityholders generally, will be set forth in the proxy statement~~/~~prospectus~~ ~~relating~~Michael toMinnick ~~the~~Name: ~~Merger~~Michael ~~when~~Minnick itTitle: ~~becomes~~Chief ~~available.~~ Executive Officer

Forward-Looking Statements

This Report includes “forward-looking statements” with respect to CPTK, Mkango and Lancaster. The expectations, estimates, and projections of the businesses of such parties may differ from their actual results and consequently, you should not rely on these forward-looking statements as predictions of future events. Words such as “expect,” “estimate,” “project,” “budget,” “forecast,” “anticipate,” “intend,” “plan,” “may,” “will,” “could,” “should,” “believes,” “predicts,” “potential,” “continue,” and similar expressions are intended to identify such forward-looking statements. These forward-looking statements include, without limitation, whether the BCA will be executed, whether the TSX-V will consent to the conversion of the Notes for shares of Lancaster and whether Nasdaq will approve the listing of shares of Lancaster. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially from the expected results. Most of these factors are outside of the control of the parties and are difficult to predict. Factors that may cause such differences include, but are not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the negotiations and any subsequent definitive agreements with respect to the proposed business combination, and the possibility that the terms and conditions set forth in any definitive agreements with respect to the proposed business combination may differ materially from the terms and conditions set forth in the term sheet, (2) the outcome of any legal proceedings that may be instituted against the parties following the announcement of the proposed business combination and any definitive agreements with respect thereto; (3) the inability to complete the proposed transaction, including due to failure to obtain approval of the shareholders of CPTK or other conditions to closing; (4) the inability to obtain or maintain the listing of the post-transaction company’s shares on Nasdaq or another national securities exchange following the proposed transaction; (5) the risk that the proposed transaction disrupts current plans and operations as a result of the announcement and consummation of the proposed transaction; (6) the ability to recognize the anticipated benefits of the proposed transaction, which may be affected by, among other things, competition, the ability of the combined company to grow and manage growth profitably and retain its key employees; (7) costs related to the proposed transaction; (8) changes in applicable laws or regulations; and (9) other risks and uncertainties included in documents filed or to be filed with the SEC by CPTK and Lancaster. The foregoing list of factors is not exclusive. You should not place undue reliance upon any forward-looking statements, which speak only as of the date made. The parties do not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in their expectations or any change in events, conditions, or circumstances on which any such statement is based, except as required by law. Past performance by the parties’ management teams and their respective affiliates is not a guarantee of future performance. Therefore, you should not place undue reliance on the historical record of the performance of the parties’ management teams or businesses associated with them as indicative of future performance of an investment or the returns that the parties will, or are likely to, generate going forward.

No Offer or Solicitation

This Report shall not constitute a solicitation of a proxy, consent, or authorization with respect to any securities or in respect of the Merger. This Report shall also not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any states or jurisdictions in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

Exhibit		Description
99.1		Press Release, dated June 3, 2025
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	Crown Proptech Acquisitions
Date: June 3, 2025
	By:	/s/ Michael Minnick
	Name:	Michael Minnick
	Title:	Chief Executive Officer

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