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): September 24, 2025

Newbury Street Acquisition Corporation

(Exact Name of Registrant as Specified in Charter)

Delaware

001-40251

85-3985188

(State or Other Jurisdiction

of Incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

121 High Street, Floor 3

Boston, MA

02110

(Address of Principal Executive Offices)

(Zip Code)

(617) 893-3057

(Registrant’s telephone number, including area code)

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 (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: None.

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 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

The disclosure contained in Item 5.07 of this Current Report on Form 8-K is incorporated herein by reference.

Item 5.07. Submission of Matters to a Vote of Security Holders.

Special Meeting

On September 24, 2025, Newbury Street Acquisition Corporation (the “Company”) held a special meeting of stockholders (the “Special Meeting”) to approve the Extension Proposal and the Adjournment Proposal, each as defined below and more fully described in the Company’s definitive proxy statement, filed with the Securities and Exchange Commission on September 9, 2025 (the “Proxy Statement”). An aggregate of 3,595,910 shares of the Company’s common stock, or approximately 92.46% of the outstanding shares of common stock entitled to vote as of the record date of September 8, 2025, were represented in person or by proxy at the Special Meeting.

The following is a brief description of the final voting results for each of the proposals submitted to a vote at the Special Meeting:

Proposal 1 – The Extension Proposal

Stockholders approved the proposal to amend the Company’s Second Amended and Restated Certificate of Incorporation, as amended, to extend the date by which the Company must (1) consummate a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination (an “initial business combination”), (2) cease all operations except for the purpose of winding up if it fails to complete such initial business combination, and (3) redeem all of the shares of common stock, par value $0.0001 per share, of the Company (“Common Stock”) included as part of the units sold in the Company’s initial public offering (the “Public Shares”) from September 25, 2025 to March 25, 2026 (the “Extension Proposal”).

The final voting results for the Extension Proposal were as follows:

Votes For		Votes Against		Abstentions
3,595,910		0		0

Proposal 2 – The Adjournment Proposal

Stockholders approved an adjournment of the Special Meeting to a later date or dates, if necessary or convenient, to permit further solicitation and vote of proxies in the event that there are insufficient votes for, or otherwise in connection with, the approval of the Extension Proposal (the “Adjournment Proposal”). An adjournment of the Special Meeting was not necessary.

The final voting results for the Adjournment Proposal were as follows:

Votes For		Votes Against		Abstentions
3,595,910		0		0

There were no broker non-votes in connection with the Extension Proposal and Adjournment Proposal.

Charter Amendment

On September 24, 2025, the Company filed an amendment to its Second Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware (the “Charter Amendment”) to extend the date by which the Company has to consummate a business combination from September 25, 2025 to March 25, 2026.

The foregoing description of the Charter Amendment is qualified in its entirety by reference to the full text of the Charter Amendment, a copy of which is filed as Exhibit 3.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Redemptions and Contribution

In connection with approval of the Extension Proposal, the holders of 5,590 shares of common stock of the Company properly exercised their right to redeem their shares for cash at a redemption price of approximately $11.54 per share, for an aggregate redemption amount of approximately $64,503.91. As a result, approximately $64,503.91 will be removed from the Company’s trust account to pay such holders. Following redemptions, the Company will have 65,675 Public Shares.

The foregoing description is qualified in its entirety by reference to the Company’s definitive proxy statement, filed with the Securities and Exchange Commission on September 9, 2025.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

Exhibit No.		Description

3.1		Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation of Newbury Street Acquisition Corporation, dated September 24, 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.

Dated: September 25, 2025

	Newbury Street Acquisition Corporation

	By:	/s/ Thomas Bushey
		Thomas Bushey
		Chief Executive Officer

Newbury Street Acquisition Corp 8-K