# EDGAR Filing Document

**Accession Number:** 0002109150
**File Stem:** 0001140361-26-024020
**Filing Date:** 2026-6
**Character Count:** 14035
**Document Hash:** 5ebbb708c412164b5238dc4d41f24177
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-26-024020.hdr.sgml**: 20260604

**ACCESSION NUMBER**: 0001140361-26-024020

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260604

**FILED AS OF DATE**: 20260604

**DATE AS OF CHANGE**: 20260604

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ADVENT INTERNATIONAL, L.P.
- **CENTRAL INDEX KEY:** 0001034196

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

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43329
- **FILM NUMBER:** 261066272

**BUSINESS ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET SUITE 3300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 6179510555

**MAIL ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET SUITE 3300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER NAME:**
- **FORMER CONFORMED NAME:** ADVENT INTERNATIONAL CORP/MA
- **DATE OF NAME CHANGE:** 19990325
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Abu Dhabi Investment Authority
- **CENTRAL INDEX KEY:** 0001362558

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** C0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43329
- **FILM NUMBER:** 261066270

**BUSINESS ADDRESS:**
- **STREET 1:** 211 CORNICHE STREET
- **STREET 2:** PO BOX 3600
- **CITY:** ABU DHABI
- **STATE:** C0
- **ZIP:** 0000
- **BUSINESS PHONE:** 971 2 4154242

**MAIL ADDRESS:**
- **STREET 1:** 211 CORNICHE STREET
- **STREET 2:** PO BOX 3600
- **CITY:** ABU DHABI
- **STATE:** C0
- **ZIP:** 0000
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** AI Alpine Parent & Cy S.C.A.
- **CENTRAL INDEX KEY:** 0002138248

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** N4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43329
- **FILM NUMBER:** 261066273

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2-4 RUE BECK
- **CITY:** LUXEMBOURG
- **PROVINCE COUNTRY:** N4
- **ZIP:** L-1222
- **BUSINESS PHONE:** 352-285-546-1

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2-4 RUE BECK
- **CITY:** LUXEMBOURG
- **PROVINCE COUNTRY:** N4
- **ZIP:** L-1222
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** ADVENT INTERNATIONAL GP, LLC
- **CENTRAL INDEX KEY:** 0001984045

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

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43329
- **FILM NUMBER:** 261066271

**BUSINESS ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET SUITE 3300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-951-0555

**MAIL ADDRESS:**
- **STREET 1:** 800 BOYLSTON STREET SUITE 3300
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** AI Alpine (Luxembourg) S.a.r.l.
- **CENTRAL INDEX KEY:** 0002136721

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** N4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43329
- **FILM NUMBER:** 261066274

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2-4 RUE BECK
- **CITY:** LUXEMBOURG
- **PROVINCE COUNTRY:** N4
- **ZIP:** L-1222
- **BUSINESS PHONE:** 352 26 63 88

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2-4 RUE BECK
- **CITY:** LUXEMBOURG
- **PROVINCE COUNTRY:** N4
- **ZIP:** L-1222
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** INNIO N.V.
- **CENTRAL INDEX KEY:** 0002109150
- **STANDARD INDUSTRIAL CLASSIFICATION:** MOTORS & GENERATORS [3621]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** 2M
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** NYMPHENBURGER STRASSE 5, 80335
- **CITY:** MUNICH
- **PROVINCE COUNTRY:** 2M
- **ZIP:** 00000
- **BUSINESS PHONE:** 43 6664 80833 3230

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** NYMPHENBURGER STRASSE 5, 80335
- **CITY:** MUNICH
- **PROVINCE COUNTRY:** 2M
- **ZIP:** 00000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INNIO Group Holding B.V.
- **DATE OF NAME CHANGE:** 20260603

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** INNIO Holding GmbH
- **DATE OF NAME CHANGE:** 20260203

### 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>AI Alpine (Luxembourg) S.a.r.l.<br><sub>(Last) (First) (Middle)</sub><br>2-4 RUE BECK<br><sub>(Street)</sub><br>LUXEMBOURG, LUXEMBOURG L-1222<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INNIO N.V. [ INIO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-04 | **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>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>AI Alpine Parent & Cy S.C.A.<br><sub>(Last) (First) (Middle)</sub><br>2-4 RUE BECK<br><sub>(Street)</sub><br>LUXEMBOURG, LUXEMBOURG L-1222<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INNIO N.V. [ INIO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-04 | **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>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>ADVENT INTERNATIONAL, L.P.<br><sub>(Last) (First) (Middle)</sub><br>PRUDENTIAL TOWER<br>800 BOYLSTON STREET, SUITE 3300<br><sub>(Street)</sub><br>BOSTON, MA 02199-8069<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INNIO N.V. [ INIO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-04 | **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>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>ADVENT INTERNATIONAL GP, LLC<br><sub>(Last) (First) (Middle)</sub><br>PRUDENTIAL TOWER<br>800 BOYLSTON STREET, SUITE 3300<br><sub>(Street)</sub><br>BOSTON, MA 02199-8069<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INNIO N.V. [ INIO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-04 | **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>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Abu Dhabi Investment Authority<br><sub>(Last) (First) (Middle)</sub><br>211 CORNICHE STREET<br>PO BOX 3600<br><sub>(Street)</sub><br>ABU DHABI, UNITED ARAB EMIRATES <br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>INNIO N.V. [ INIO ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2026-06-04 | **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>[ ] Form filed by One Reporting Person<br>[X] 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 |
| Common Shares | 750000000 | D<sup>(1)(2)(3)</sup> |  |

---

## 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 |
|  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The reported securities are directly held by AI Alpine (Luxembourg) S.a r.l. (the "Shareholder"), which is indirectly controlled by AI Alpine Parent & Cy S.C.A. ("AI Alpine Parent"). Various funds and accounts affiliated with Advent International, L.P. and its general partner, Advent International GP, LLC (together with Advent International, L.P., "Advent"), indirectly hold 53.8% of the equity of AI Alpine Parent and, accordingly, Advent exercises voting and investment control of the securities directly held by the Shareholder. The board of Advent International GP, LLC appoints the investment committee of Advent International, L.P. (the "Investment Committee"), which Investment Committee has voting and investment power with respect to the securities directly held by the Shareholder.

(2) Abu Dhabi Investment Authority ("ADIA") indirectly holds approximately 45.0% of the equity of AI Alpine Parent through Luxinva S.A., a wholly owned subsidiary of ADIA. Due to the terms of its relationship with AI Alpine Parent and such indirect holdings, ADIA may, for the purposes of and pursuant to the rules and regulations of the SEC, also be deemed to have beneficial ownership of the securities directly held by the Shareholder. ADIA is a public institution established by the Government of the Emirate of Abu Dhabi.

(3) Each Reporting Person and each other person referenced in this Statement disclaims Section 16 beneficial ownership of the reported securities except to the extent of their respective pecuniary interest therein, if any, and this Statement shall not be deemed an admission of beneficial ownership of any of the reported shares for purposes of Section 16 or any other purpose.

**Remarks:**
The board of directors of the Issuer (the "Board") currently includes members affiliated with certain of the Reporting Persons that were appointed or elected to the Board pursuant to the Relationship Agreement, dated June 4, 2026, between the Issuer and the Shareholder. As a result, the Reporting Persons may be deemed directors by deputization for purposes of Section 16 of the Exchange Act.

**Signature:** AI ALPINE (LUXEMBOURG) S.A R.L.,
By: /s/ Jean-Francois Jochum,
Name: Jean-Francois Jochum,
Title: Authorized Signatory,
By: /s/ Yves Kuhn, Name: Yves Kuhn,
Title: Authorized Signatory  
**Date:** 2026-06-04

**Signature:** AI ALPINE PARENT & CY S.C.A., By: AI Alpine GP S.a r.l., its General Partner, By: /s/ Jean-Francois Jochum, Name: Jean-Francois Jochum, Title: Manager, By: /s/ Kremena Popova, Name: Kremena Popova, Title: Manager  
**Date:** 2026-06-04

**Signature:** ADVENT INTERNATIONAL, L.P., By: Advent International GP, LLC, its General Partner, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Vice President of Finance  
**Date:** 2026-06-04

**Signature:** ADVENT INTERNATIONAL GP, LLC, By: /s/ Neil Crawford, Name: Neil Crawford, Title: Vice President of Finance  
**Date:** 2026-06-04

**Signature:** ABU DHABI INVESTMENT AUTHORITY, By: /s/ Ahmed AlNeyadi, Name: Ahmed AlNeyadi, Title: Authorized Signatory, By: /s/ Saif Surour AlMashghouni, Name: Saif Surour AlMashghouni, Title: Authorized Signatory  
**Date:** 2026-06-04

### 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.**