Cam-Phung Michael Tam - 30 Jan 2026 Form 3/A - Amendment Insider Report for Cambridge Acquisition Corp. (CAQ)

Role: Director, 10%+ Owner
Signature: /s/ Michael Cam- Phung
Issuer symbol: CAQ
Transactions as of: 30 Jan 2026
Net transactions value: $0
Form type: 3/A - Amendment
Filing time: 05 Mar 2026, 16:15:15 UTC
Date Of Original Report: 30 Jan 2026
Next filing: 05 Mar 2026
SEC: View on sec.gov

Reporting Owners (2)

Name	Relationship	Address	Signature	Signature date	CIK
Cam-Phung Michael Tam	Director, 10%+ Owner	C/O CAMBRIDGE ACQUISITION CORP, ONE LIBERTY SQUARE, 13TH FL, BOSTON	/s/ Michael Cam- Phung	05 Mar 2026	0002085776
Cambridge Sponsor LLC	10%+ Owner	ONE LIBERTY SQUARE, 13TH FL, BOSTON	/s/ Cambridge Sponsor LLC	05 Mar 2026	0002111892

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	CAQ	Class B Ordinary Shares							30 Jan 2026	Class A Ordinary Shares	7,666,667		See Footnotes	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	As described in the Issuer's Registration Statement on Form S-1, as amended (File No. 333- 292147), under the heading "Description of Securities - Founder Shares," Class B ordinary shares will automatically convert into Class A ordinary shares concurrently with or immediately following the Issuer's initial business combination or earlier at the option of the holder, on a one-for-one basis, subject to certain adjustments.
F2	These shares represent the Class B ordinary shares held by Cambridge Sponsor LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 1,000,000 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's registration statement.
F3	The Sponsor is the record holder of such shares. Michael Cam- Phung, as the managing member of the Sponsor, holds voting and investment discretion with respect to the ordinary shares held of record by the Sponsor. As such, Mr. Cam- Phung may be deemed to have beneficial ownership of the securities held of record by the Sponsor. Mr. Cam- Phung disclaims any beneficial ownership of the securities held by the Sponsor other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Remarks:

This Form 3/A amends the Form 3 filing dated January 30, 2026 (the "Original Form 3") solely to add Cambridge Sponsor LLC (the "Sponsor") as an additional Reporting Person. Although Sponsor was disclosed in the Original Form 3, it was not included as a Reporting Person because it did not have codes for the EDGAR system at such time. Other than including the Sponsor as additional reporting persons, this form contains no amendment to the Original Form 3.