# EDGAR Filing Document

**Accession Number:** 0002002106
**File Stem:** 0001213900-25-096683
**Filing Date:** 2025-10
**Character Count:** 12240
**Document Hash:** 860a140770cc2fa86b295c15b554edf7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-096683.hdr.sgml**: 20251006

**ACCESSION NUMBER**: 0001213900-25-096683

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251006

**DATE AS OF CHANGE**: 20251006

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Palomino Laboratories Inc.
- **CENTRAL INDEX KEY:** 0001938569
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 881619619
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95213
- **FILM NUMBER:** 251377841

**BUSINESS ADDRESS:**
- **STREET 1:** 12 E. 49TH STREET
- **STREET 2:** 11TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** (917) 200-3734

**MAIL ADDRESS:**
- **STREET 1:** 12 E. 49TH STREET
- **STREET 2:** 11TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Unite Acquisition 3 Corp.
- **DATE OF NAME CHANGE:** 20220719
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Lucius Partners LLC
- **CENTRAL INDEX KEY:** 0002002106

**ORGANIZATION NAME:**
- **EIN:** 843461971
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D

**BUSINESS ADDRESS:**
- **STREET 1:** 12 E 49TH STREET, FLOOR 11
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 917-200-3734

**MAIL ADDRESS:**
- **STREET 1:** 12 E 49TH STREET, FLOOR 11
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

## Exhibit 99.1

**Exhibit 1**

**JOINT FILING AGREEMENT**

Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (the "<u>Exchange Act</u>") the undersigned hereby agree to the joint filing on behalf of each of them of any filing required by such party under Section 13 of the Exchange Act or any rule or regulation thereunder (including any amendment, restatement, supplement, and/or exhibit thereto) with respect to securities of Unite Acquisition 3 Corp., a Delaware corporation, and further agree to the filing, furnishing, and/or incorporation by reference of this Agreement as an exhibit thereto. Each of them is responsible for the timely filing of such filings and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate. This Agreement shall remain in full force and effect until revoked by any party hereto in a signed writing provided to each other party hereto, and then only with respect to such revoking party. This Agreement may be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.

Dated: October 6, 2025

---

| | |
|:---|:---|
| **Lucius Partners, LLC** | **Lucius Partners, LLC** |
| By: | /s/ Matthew Eitner |
| Name: | Matthew Eitner |
| Title: | Managing Member |
| **Matthew Eitner** | **Matthew Eitner** |
| By: | /s/ Matthew Eitner |
| Name: | Matthew Eitner |

---

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**Palomino Laboratories Inc.**

*(Name of Issuer)*

**Common Stock, $0.0001 par value per share**

*(Title of Class of Securities)*

**000000000**

*(CUSIP Number)*

**Matthew Eitner**<br>Lucius Partners LLC<br>12 E. 49th Street 11th Floor<br>New York NY 10017<br>212-953-4900

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**10/09/2023**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **000000000** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Matthew Eitner** | Name of reporting person<br>**Matthew Eitner** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5000000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5000000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5000000.00** | Aggregate amount beneficially owned by each reporting person<br>**5000000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**100%** | Percent of class represented by amount in Row (11)<br>**100%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** The reported amount includes the Reporting Persons beneficial ownership as of October 9, 2023, the date of which triggered the obligation to file this Schedule 13D. Subsequent to October, 9, 2023, pursuant to the terms of an Agreement and Plan of Merger and Reorganization, dated as of September 29, 2025, and pursuant to the terms of a stock cancellation agreement, the Reporting Person voluntarily surrendered and cancelled for no consideration 1,000,000 shares of Issuer's common stock in connection with the consummation of the Merger on September 29, 2025.

| **CUSIP No.** | **000000000** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Lucius Partners LLC** | Name of reporting person<br>**Lucius Partners LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**5000000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**5000000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**5000000.00** | Aggregate amount beneficially owned by each reporting person<br>**5000000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**100%** | Percent of class represented by amount in Row (11)<br>**100%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** The reported amount includes the Reporting Persons beneficial ownership as of October 9, 2023, the date of which triggered the obligation to file this Schedule 13D. Subsequent to October, 9, 2023, pursuant to the terms of an Agreement and Plan of Merger and Reorganization, dated as of September 29, 2025, and pursuant to the terms of a stock cancellation agreement, the Reporting Person voluntarily surrendered and cancelled for no consideration 1,000,000 shares of Issuer's common stock in connection with the consummation of the Merger on September 29, 2025.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, $0.0001 par value per share

**(b) Name of Issuer:**
Palomino Laboratories Inc.

**(c) Address of Issuer's Principal Executive Offices:**
313 Bryant Court, Palo Alto, CA, 94301

**Item 4. Purpose of Transaction**

The Reporting Persons acquired beneficial ownership of the securities reported herein for investment purposes. The Reporting Persons may engage in discussions with management, the board, or other shareholders regarding the Issuer's operations, governance, or strategic alternatives. The Reporting Persons may acquire additional securities of the Issuer or dispose of securities depending on market conditions and other factors.

Except as set forth above, the Reporting Persons do not have any current plans or proposals which would result in any of the matters listed in Item 4(a) - (j) of Schedule 13D.

**Item 5. Interest in Securities of the Issuer**

**(a)**
The Reporting Persons beneficially own an aggregate of 5,000,000 shares of Common Stock representing approximately 100% of the Issuer's outstanding shares of Common Stock issued and outstanding as of August 7, 2025, as reported in the Issuer's Form 10-Q filed with the SEC on August 7, 2025.

The reported amount includes the Reporting Persons beneficial ownership as of October 9, 2023, the date of which triggered the obligation to file this Schedule 13D. Subsequent to October, 9, 2023, pursuant to the terms of an Agreement and Plan of Merger and Reorganization, dated as of September 29, 2025, and pursuant to the terms of a stock cancellation agreement, the Reporting Person voluntarily surrendered and cancelled for no consideration 1,000,000 shares of Issuer's common stock in connection with the consummation of the Merger on September 29, 2025.

**(b)**
Lucius Partners, LLC holds direct beneficial ownership of the shares. Matthew Eitner, as the Managing Member of Lucius Partners, LLC, may be deemed to share voting and dispositive power over such shares.

**(c)**
Other than the transaction described herein, the Reporting Persons have not engaged in any transactions in the securities of the Issuer during the past 60 days.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

Except as described herein, there are no contracts, arrangements, understandings or relationships among the Reporting Persons, or between the Reporting Persons and any other person, with respect to the securities of the Issuer.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Matthew Eitner

**Signature:** /s/ Matthew Eitner

**Name/Title:** Matthew Eitner

**Date:** 10/06/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Lucius Partners LLC

**Signature:** /s/ Matthew Eitner

**Name/Title:** Matthew Eitner, Managing Member

**Date:** 10/06/2025