Collective Acquisition Sponsor LLC - 05 Feb 2026 Form 3 Insider Report for Dune Acquisition Corp II (IPOD)

Role: 10%+ Owner
Signature: /s/ Elliot Richmond, as Authorized Signatory of Collective Acquisition Sponsor LLC
Issuer symbol: IPOD
Transactions as of: 05 Feb 2026
Net transactions value: $0
Form type: 3
Filing time: 18 Feb 2026, 17:56:29 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Collective Acquisition Sponsor LLC	10%+ Owner	C/O DUNE ACQUISITION CORPORATION II, 12955 BISCAYNE BLVD, STE 200 PMB 616, MIAMI	/s/ Elliot Richmond, as Authorized Signatory of Collective Acquisition Sponsor LLC	18 Feb 2026	0002111833

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	IPOD	Class B Ordinary Shares							05 Feb 2026	Class A Ordinary Shares	4,475,000		Direct	F1

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

Explanation of Responses:

Id	Content
F1	As described in Dune Acquisition Corporation II's (the "Issuer") Registration Statement on Form S-1 (File No. 333-285639), under the heading "Description of Securities - Founder Shares," the Class B ordinary shares, par value $0.0001 per share, of the Issuer will automatically convert into Class A ordinary shares, par value $0.0001 per share of the Issuer at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to certain adjustments.

Content

As described in Dune Acquisition Corporation II's (the "Issuer") Registration Statement on Form S-1 (File No. 333-285639), under the heading "Description of Securities - Founder Shares," the Class B ordinary shares, par value $0.0001 per share, of the Issuer will automatically convert into Class A ordinary shares, par value $0.0001 per share of the Issuer at the time of the Issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to certain adjustments.