# EDGAR Filing Document

**Accession Number:** 0002076444
**File Stem:** 0001094891-25-000018
**Filing Date:** 2025-8
**Character Count:** 16056
**Document Hash:** c40c431899fea404df66bb456d86f136
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001094891-25-000018.hdr.sgml**: 20250805

**ACCESSION NUMBER**: 0001094891-25-000018

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250805

**DATE AS OF CHANGE**: 20250805

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Indigo Acquisition Corp.
- **CENTRAL INDEX KEY:** 0002063816
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95112
- **FILM NUMBER:** 251185182

**BUSINESS ADDRESS:**
- **STREET 1:** 801 BRICKELL AVENUE
- **STREET 2:** SUITE 1900
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33131
- **BUSINESS PHONE:** (305) 438-7700

**MAIL ADDRESS:**
- **STREET 1:** 801 BRICKELL AVENUE
- **STREET 2:** SUITE 1900
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33131
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Indigo Sponsor Group LLC
- **CENTRAL INDEX KEY:** 0002076444

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** C/O CASSEL SALPETER & CO.
- **STREET 2:** 801 BRICKELL AVENUE, SUITE 1900
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33131
- **BUSINESS PHONE:** 305-438-7700

**MAIL ADDRESS:**
- **STREET 1:** C/O CASSEL SALPETER & CO.
- **STREET 2:** 801 BRICKELL AVENUE, SUITE 1900
- **CITY:** MIAMI
- **STATE:** FL
- **ZIP:** 33131

### Attached PDF Documents

**Attachment 1:** `IndigoJFA.pdf`

_No text found in this document._

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**Indigo Acquisition Corp.**

*(Name of Issuer)*

**Ordinary Shares**

*(Title of Class of Securities)*

**G4791J106**

*(CUSIP Number)*

**Scott E. Salpeter**<br>801 Brickell Avenue<br>Suite 1900<br>Miami FL 33131<br>305-438-7700

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

**06/30/2025**

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

| **CUSIP No.** | **G4791J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Indigo Sponsor Group LLC** | Name of reporting person<br>**Indigo Sponsor Group 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>**2214286.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**2214286.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | |
| 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>**15.0%** | Percent of class represented by amount in Row (11)<br>**15.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

| **CUSIP No.** | **G4791J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**CASSEL JAMES S** | Name of reporting person<br>**CASSEL JAMES S** | |
| 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>**2214286.00** |
| 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>**2214286.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | |
| 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>**15.0%** | Percent of class represented by amount in Row (11)<br>**15.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

| **CUSIP No.** | **G4791J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**SALPETER SCOTT E** | Name of reporting person<br>**SALPETER SCOTT E** | |
| 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>**2214286.00** |
| 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>**2214286.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | Aggregate amount beneficially owned by each reporting person<br>**2214286.00** | |
| 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>**15.0%** | Percent of class represented by amount in Row (11)<br>**15.0%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Ordinary Shares

**(b) Name of Issuer:**
Indigo Acquisition Corp.

**(c) Address of Issuer's Principal Executive Offices:**
801 BRICKELL AVENUE, SUITE 1900, MIAMI, FL, 33131

**Item 4. Purpose of Transaction**

On March 7, 2025, Sponsor, as sponsor of the Issuer, acquired an aggregate of 2,165,000 ordinary shares for an aggregate purchase price of $3,765, or approximately $0.002 per share.  On July 2, 2025, the Issuer consummated its initial public offering (?IPO?) and in connection with the consummation, the Sponsor purchased an aggregate of 244,286 units for an aggregate purchase price of $2,442,860.  Each unit purchased was comprised of one ordinary share of the Issuer and one right to receive one-tenth of one ordinary share of the Issuer upon consummation of an initial business combination.

The reporting persons made the acquisitions reported in this Schedule 13D as sponsor and officers and directors of the Issuer and in support of the Issuer?s business plan. The reporting persons may acquire or dispose of additional securities or sell securities of the Issuer from time to time in the market or in private transactions, including as a result of ownership of the rights referred to above. However, reporting persons do not have any other agreements to acquire additional ordinary shares at this time.

As officers and directors of the Issuer, Cassel and Salpeter are involved in making material business decisions regarding the Issuer?s policies and practices and may be involved in the consideration of various proposals considered by the Issuer?s board of directors. Additionally, as the Issuer?s business plan is to enter into a business combination, Cassel and Salpeter, as officers and directors of the Issuer, are actively involved in pursuing a suitable target for the Issuer?s business combination and will be actively involved in effecting any such business combination if the Issuer?s business plan is successful, which may also result in a change in the Issuer?s board of directors, corporate structure or charter.

As of the date of this Schedule 13D, except as set forth in this Schedule 13D above, the reporting persons do not have any plans or proposals which would result in:

 	(a)	The acquisition by any person of additional securities of the Issuer, or the disposition of securities of the Issuer;
 	(b)	An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries;
 	(c)	A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries;
 	(d)	Any change in the present board of directors or management of the Issuer, including any plans or proposals to change the number or term of the board of directors or management of the Issuer;
 	(e)	Any material change in the present capitalization or dividend policy of the Issuer;
 	(f)	Any other material change in the Issuer's business or corporate structure;
 	(g)	Changes in the Issuer's charter, bylaws or instruments corresponding thereto or other actions which ay impede the acquisition of control of the Issuer by any person;
 	(h)	Causing a class of securities of the Issuer to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association;
 	(i)	A class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Act; or
 	(j)	Any action similar to any of those actions enumerated above.

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

**(a)**
(a)-(b)	The aggregate number and percentage of ordinary shares beneficially owned by reporting persons (on the basis of a total of 14,755,000 ordinary shares outstanding as of July 11, 2025) are as follows:
(a)i. Sponsor: 2,214,286 ordinary shares 15.0% (directly owned)ii. Cassel: 2,214,286 ordinary shares 15.0% (indirectly owned)iii. Salpeter: 2,214,286 ordinary shares 15.0% (indirectly owned)

**(b)**
i. Sponsor: 2,214,286 ordinary shares 15.0%
   Cassel: 0 ordinary shares 0%
   Salpeter: 0 ordinary shares 0%
ii. Sponsor: 0 ordinary shares 0%
   Cassel: 2,214,286 ordinary shares 15.0%
   Salpeter: 2,214,286 ordinary shares 15.0%
iii. Sponsor: 2,214,286 ordinary shares 15.0%
   Cassel: 0 ordinary shares 0%
   Salpeter: 0 ordinary shares 0%
iv. Sponsor: 0 ordinary shares 0%
   Cassel: 2,214,286 ordinary shares 15.0%
   Salpeter: 2,214,286 ordinary shares 15.0%

**(c)**
The reporting persons are the beneficial owner of 2,214,286 ordinary shares, or approximately 15.0%, of the Issuer's outstanding ordinary shares.

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

Sponsor is party to a Registration Rights Agreement, dated June 30, 2025, by and among the Issuer and certain other parties thereto ("Registration Rights Agreement"), a Letter Agreement, dated June 30, 2025, by and among the Issuer, EarlyBirdCapital, Inc. and certain other parties thereto ("Insider Letter Agreement") and a Share Escrow Agreement dated June 30, 2025, by and among the Issuer and certain other parties thereto ("Share Escrow Agreement").

Pursuant to the Registration Rights Agreement, the initial shareholders, including Sponsor, and the other parties thereto are entitled to registration rights with respect to certain securities of the Issuer held by them. The holders of a majority of these securities are entitled to make up to three demands that the Issuer register such securities. In addition, the holders have certain piggy-back registration rights with respect to registration statements filed subsequent to consummation of the Issuer's Business Combination. The Issuer will bear the expenses incurred in connection with the filing of any such registration statements.

Pursuant to the Insider Letter Agreement, Sponsor agreed, among other things, to vote all ordinary shares owned by it, subject to applicable securities laws, in favor of a proposed Business Combination, not to sell or transfer any securities of the Issuer, subject to certain exceptions, until certain periods of time set forth in the Insider Letter Agreement and the Share Escrow Agreement and that it would not seek redemption rights with respect to any ordinary shares held by it.

Pursuant to the Share Escrow Agreement, Sponsor agreed, among other things, that the shares held by it prior to the IPO may not be transferred, assigned, sold or released from escrow, except for certain permitted transfers, until six months after the date of the consummation of an initial Business Combination, or earlier, if, subsequent to an initial Business Combination, the Issuer consummates a subsequent liquidation, merger, stock exchange or other similar transaction which results in all of the Issuer's shareholders having the right to exchange their shares for cash, securities or other property.

### 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:** Indigo Sponsor Group LLC

**Signature:** /s/ Scott E. Salpeter

**Name/Title:** Scott E. Salpeter, Managing Member

**Date:** 08/04/2025

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:** CASSEL JAMES S

**Signature:** /s/ James S. Cassel

**Name/Title:** James S. Cassel

**Date:** 08/04/2025

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:** SALPETER SCOTT E

**Signature:** /s/ Scott E. Salpeter

**Name/Title:** Scott E. Salpeter

**Date:** 08/04/2025