Cam-Phung Michael Tam - 09 Feb 2026 Form 4/A - Amendment Insider Report for Cambridge Acquisition Corp. (CAQ)

Role: Director, 10%+ Owner
Signature: /s/ Cambridge Sponsor LLC
Issuer symbol: CAQ
Transactions as of: 09 Feb 2026
Net transactions value: +$4,955,000
Form type: 4/A - Amendment
Filing time: 05 Mar 2026, 16:16:12 UTC
Date Of Original Report: 10 Feb 2026
Previous 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/ Cambridge Sponsor LLC	05 Mar 2026	0002085776
Cambridge Sponsor LLC	10%+ Owner	ONE LIBERTY SQUARE, 13TH FL, BOSTON	/s/ Michael Cam- Phung	05 Mar 2026	0002111892

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CAQ	Class A Ordinary Shares	Purchase	$4,955,000	+495,500		$10.00	495,500	09 Feb 2026	See footnote	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Reflects the 495,500 Class A ordinary shares of Cambridge Acquisition Corp. (the "Issuer") that are included in the 495,500 private placement units of the Issuer purchased by Cambridge Sponsor LLC ("Sponsor"). Each private placement unit was purchased for $10 per unit and consists of one Class A ordinary share and one-third of a warrant, each whole warrant exercisable into one Class A ordinary share at an exercise price of $11.50 per ordinary share.
F2	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.
F3	Excludes 7,666,667 Class B ordinary shares of the Issuer held by the Sponsor acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor.

Remarks:

This Form 4/A amends the Form 4 filing dated February 10, 2026 (the "Original Form 4") solely to add Cambridge Sponsor LLC (the "Sponsor") as an additional Reporting Person. Although Sponsor was disclosed in the Original Form 4, 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 4.