Form 8-K

8-K — Cayson Acquisition Corp

Accession: 0001493152-26-018640

Filed: 2026-04-23

Period: 2026-04-22

CIK: 0002024203

SIC: 6770 (BLANK CHECKS)

Item: Other Events

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

WASHINGTON,

DC 20549

FORM

8-K

CURRENT

REPORT

PURSUANT

TO SECTION 13 OR 15(d) OF THE

SECURITIES

EXCHANGE ACT OF 1934

Date

of Report (Date of earliest event reported): April 22, 2026 (March 18, 2026)

CAYSON

ACQUISITION CORP

(Exact

Name of Registrant as Specified in Charter)

Cayman

Islands

001-42280

N/A 00-0000000

(State

or Other Jurisdiction

Incorporation)

(Commission

File

Number)

(IRS

Employer

Identification

No.)

205

W 37th St, New York, New York

10018

(Address

of Principal Executive Offices)

(Zip

Code)

Registrant’s

telephone number, including area code: (203) 998-5540

N/A

(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 of the registrant under

any of the following provisions (see General Instruction A.2. below):

☒

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

Units,

each consisting of one ordinary share and one right

CAPNU

The

Nasdaq Stock Market LLC

Ordinary

Shares, par value $0.0001 per share

CAPN

The

Nasdaq Stock Market LLC

Rights,

each entitling the holder to one tenth of one ordinary share upon the completion of the Company’s initial business combination

CAPNR

The

Nasdaq Stock Market LLC

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 ☒

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

8.01. Other Events.

previously reported, on March 18, 2026, Cayson Acquisition Corp (the “Company”) held an extraordinary general meeting (the

“Meeting”) to approve, among other matters, a proposal to amend the Company’s amended and restated memorandum and articles

of association as adopted by special resolution dated September 19, 2024 with effect from September 23, 2024 (the “Existing Memorandum

and Articles”) to allow the Company’s Board to extend the date (the “Extension”) by which the Company had to

consummate a business combination (as defined in the Existing Memorandum and Articles) on a monthly basis, up to twelve (12) months (or

until March 23, 2027) (the “Extended Date”), unless the closing of a business combination shall have occurred prior thereto

or such earlier date as shall be determined by the Board in its sole discretion, provided that the Company’s sponsors, officers,

directors, affiliates or designees (collectively, the “Insiders”) lend to the Company (each a “Contribution”)

an aggregate of US$125,000 for each month utilized to consummate an initial business combination, which Contributions shall be deposited

by the Company into the Trust Account (as defined in the Existing Memorandum and Articles) and thereby increase the per-share redemption

price paid in connection with the ultimate consummation of a business combination or the Company’s liquidation. On April 22, 2026,

the Insiders deposited the Contribution for the second month of the Extension.

Cautionary

Note Regarding Forward Looking Statements

Neither

the Company nor any of its affiliates makes any representation or warranty as to the accuracy or completeness of the information contained

in this Current Report on Form 8-K. This Current Report on Form 8-K is not intended to be all-inclusive and is not intended to form the

basis of any investment decision or any other decision in respect of the Company or its proposed business combination.

This

Current Report on Form 8-K include “forward-looking statements” made pursuant to the safe harbor provisions of the United

States Private Securities Litigation Reform Act of 1995. Actual results may differ from expectations, estimates and projections and consequently,

you should not rely on these forward-looking statements as predictions of future events. These forward-looking statements generally are

identified by the words or phrases such as “aspire,” “expect,” “estimate,” “project,”

“budget,” “forecast,” “anticipate,” “intend,” “plan,” “may,”

“will,” “will be,” “will continue,” “will likely result,” “could,” “should,”

“believe(s),” “predicts,” “potential,” “continue,” “future,” “opportunity,”

seek,” “intend,” “strategy,” or the negative version of those words or phrases or similar expressions are

intended to identify such forward-looking statements.

The

Company cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the date made. The Company

does 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 its expectations or any change in events, conditions or circumstances on which any such statement is based.

Offer or Solicitation

This

Current Report on Form 8-K does not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation

of any vote or approval, nor shall there be any sale of securities in any jurisdiction 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 the Securities Act.

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.

Dated:

April 23, 2026

CAYSON

ACQUISITION CORP

By:

/s/

Yawei Cao

Yawei

Cao

Chief

Executive Officer

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Entity Registrant Name

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Entity Incorporation, State or Country Code

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Security Exchange Name

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