Business Combination Prospectus (Form 425)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 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): May 19, 2026

Bayview Acquisition Corp

(Exact name of registrant as specified in its charter)

Cayman Islands		001-41890		N/A
(State or other jurisdiction of incorporation)		(Commission File Number)		(I.R.S. Employer Identification Number)

420 Lexington Ave, Suite 2446

New York, NY 10170

(Address of principal executive offices, including zip code)

Registrant's telephone number, including area code (347) 627-0058

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 of 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 Securities Exchange Act of 1934:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Units, each consisting of one ordinary share and one right		BAYAU		The Nasdaq Stock Market LLC
Ordinary Shares, par value $0.0001 per share		BAYA		The Nasdaq Stock Market LLC
Rights, each right entitling the holder thereof to one-tenth of one ordinary share		BAYAR		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 ☒

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 1.01 Entry into a Material Definitive Agreement.

Amendment to Merger Agreement

As previously disclosed, on June 7, 2024, Bayview Acquisition Corp, a Cayman Islands exempted company (the "Company") entered into an Agreement and Plan of Merger (the "Merger Agreement") by and among the Company, Oabay Holding Company, a Cayman Islands exempted company limited by shares ("PubCo"), Oabay Inc., a Cayman Islands exempted company limited by shares, Bayview Merger Sub 1 Limited, a Cayman Islands exempted company limited by shares and a wholly-owned subsidiary of PubCo, Bayview Merger Sub 2, a Cayman Islands exempted company limited by shares and a wholly-owned subsidiary of PubCo, Oabay Merger Sub Limited, a Cayman Islands exempted company limited by shares and a wholly-owned subsidiary of PubCo, BLAFC Limited, a business company limited by shares in the British Virgin Islands, Bayview Holding LP, a Delaware limited partnership, and Peace Investment Holdings Limited, a Delaware limited partnership.

On June 26, 2024, the parties to the Merger Agreement entered into Amendment No. 1 to the Merger Agreement pursuant to which, among other things, the parties agreed to revise the earnout milestones to reflect new consolidated revenue metrics. On May 14, 2025, the parties to the Merger Agreement entered into Amendment No. 2 to the Merger Agreement pursuant to which the parties agreed to realign the sequence of the transactions contemplated by the Merger Agreement. On January 21, 2026, the parties to the Merger Agreement entered into Amendment No. 3 to the Merger Agreement, pursuant to which the parties agreed to extend the Outside Closing Date (as defined in the Merger Agreement) to June 15, 2026.

On May 19, 2026, the parties to the Merger Agreement entered into Amendment No. 4 to the Merger Agreement, pursuant to which the parties agreed to extend the Outside Closing Date to December 19, 2026.

The foregoing summary of the Fourth Amendment does not purport to be complete and is qualified in its entirety by reference to the Fourth Amendment, a copy of which is filed as Exhibit 2.1 and is incorporated by reference herein.

Forward-Looking Statements

This Current Report on Form 8-K may include "forward-looking statements" within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Certain of these forward-looking statements can be identified by the use of words such as "believes," "expects," "intends," "plans," "estimates," "assumes," "may," "should," "will," "seeks," or other similar expressions. Such statements are subject to certain risks and uncertainties that may cause the Company's actual results to differ from the expectations expressed in the forward-looking statements. There can be no assurance that the Company will achieve such expectations. The forward-looking statements contained in this report speak only as of the date of this report and the Company undertakes no obligation to publicly update any forward-looking statements to reflect changes in information, events or circumstances after the date of this report, unless required by law.

Item 9.01. Financial Statements and Exhibits

(d) Exhibits.

The Exhibit Index is incorporated by reference herein.

EXHIBIT INDEX

Exhibit No.		Description
2.1		Amendment No. 4 to Merger Agreement, dated May 19, 2026.
104		Cover Page Interactive Data File (embedded with 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.

	BAYVIEW ACQUISITION CORP
Date: May 19, 2026	By:	/s/ Xin Wang
	Name:	Xin Wang
	Title:	Chief Executive Officer