# EDGAR Filing Document

**Accession Number:** 0002041047
**File Stem:** 0001213900-26-018070
**Filing Date:** 2026-2
**Character Count:** 5233
**Document Hash:** a73a361e1d8ea4fc4f201ff091a6b310
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-018070.hdr.sgml**: 20260218

**ACCESSION NUMBER**: 0001213900-26-018070

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260205

**FILED AS OF DATE**: 20260218

**DATE AS OF CHANGE**: 20260218

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Collective Acquisition Sponsor LLC
- **CENTRAL INDEX KEY:** 0002111833

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42607
- **FILM NUMBER:** 26650605

**BUSINESS ADDRESS:**
- **STREET 1:** C/O DUNE ACQUISITION CORPORATION II
- **STREET 2:** 12955 BISCAYNE BLVD, STE 200 PMB 616
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33181
- **BUSINESS PHONE:** 447748321535

**MAIL ADDRESS:**
- **STREET 1:** C/O DUNE ACQUISITION CORPORATION II
- **STREET 2:** 12955 BISCAYNE BLVD, STE 200 PMB 616
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33181
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Dune Acquisition Corp II
- **CENTRAL INDEX KEY:** 0002041047
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 700 S. ROSEMARY AVENUE
- **STREET 2:** SUITE 204
- **CITY:** WEST PALM BEACH
- **STATE:** FL
- **ZIP:** 33401
- **BUSINESS PHONE:** (917) 742-1904

**MAIL ADDRESS:**
- **STREET 1:** 700 S. ROSEMARY AVENUE
- **STREET 2:** SUITE 204
- **CITY:** WEST PALM BEACH
- **STATE:** FL
- **ZIP:** 33401

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Collective Acquisition Sponsor LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O DUNE ACQUISITION CORPORATION II<br>12955 BISCAYNE BLVD, STE 200 PMB 616<br><sub>(Street)</sub><br>MIAMI, FL 33181<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>Dune Acquisition Corp II [ IPOD ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-02-05 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Class B Ordinary Shares | <sup>(1)</sup> | <sup>(1)</sup> | Class A Ordinary Shares | 4475000 | <sup>(1)</sup> | D |  |

---

### Footnotes:

(1) 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.

**Signature:** /s/ Elliot Richmond, as Authorized Signatory of Collective Acquisition Sponsor LLC  
**Date:** 2026-02-18

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**