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

Reporting relationship: Director, 10%+ Owner
Issuer ticker: CAQ
Reported as of: 09 Feb 2026
Net transaction value: +$4,955,000
SEC form: 4/A - Amendment
Accepted by SEC: 05 Mar 2026, 16:16:12 UTC
Original report date: 10 Feb 2026
Prior SEC filing: 05 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Cambridge Sponsor LLC

Key filing fact

Cam-Phung Michael Tam filed Form 4/A - Amendment for Cambridge Acquisition Corp. (CAQ) on 05 Mar 2026.

Key facts

This page summarizes Cam-Phung Michael Tam's Form 4/A - Amendment filing for Cambridge Acquisition Corp. (CAQ).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 05 Mar 2026, 16:16.

Change

Previous filing in this sequence was filed on 05 Mar 2026.
Current net transaction value: +$4,955,000.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (2)

CIK 0002085776 Primary reporting owner

Cam-Phung Michael Tam

Relationship: Director, 10%+ Owner
Address: C/O CAMBRIDGE ACQUISITION CORP, ONE LIBERTY SQUARE, 13TH FL, BOSTON
Signature: /s/ Cambridge Sponsor LLC
Signature date: 05 Mar 2026

CIK 0002111892

Cambridge Sponsor LLC

Relationship: 10%+ Owner
Address: ONE LIBERTY SQUARE, 13TH FL, BOSTON
Signature: /s/ Michael Cam- Phung
Signature date: 05 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CAQ transaction

Class A Ordinary Shares

Purchase

Transaction value: $4,955,000
Shares: +495,500
Change %
Price: $10.00
Shares after: 495,500
Date: 09 Feb 2026
Ownership: See footnote
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote 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.

Footnote 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.

Footnote 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.

SEC 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.