# EDGAR Filing Document

**Accession Number:** 0000937226
**File Stem:** 0001193125-26-217594
**Filing Date:** 2026-5
**Character Count:** 47122
**Document Hash:** 03ba003c579a88a7154bc053f5899ecc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-217594.hdr.sgml**: 20260511

**ACCESSION NUMBER**: 0001193125-26-217594

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260511

**DATE AS OF CHANGE**: 20260511

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Emerald Holding, Inc.
- **CENTRAL INDEX KEY:** 0001579214
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-BUSINESS SERVICES, NEC [7389]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 421775077
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-90104
- **FILM NUMBER:** 26965256

**BUSINESS ADDRESS:**
- **STREET 1:** 31910 DEL OBISPO STREET
- **STREET 2:** SUITE 200
- **CITY:** SAN JUAN CAPISTRANO
- **STATE:** CA
- **ZIP:** 92675
- **BUSINESS PHONE:** 949-226-5700

**MAIL ADDRESS:**
- **STREET 1:** 31910 DEL OBISPO STREET
- **STREET 2:** SUITE 200
- **CITY:** SAN JUAN CAPISTRANO
- **STATE:** CA
- **ZIP:** 92675

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Emerald Expositions Events, Inc.
- **DATE OF NAME CHANGE:** 20170330

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Expo Event Holdco, Inc.
- **DATE OF NAME CHANGE:** 20130613
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ONEX CORP
- **CENTRAL INDEX KEY:** 0000937226

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A6
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 161 BAY STREET
- **STREET 2:** SUITE 4900
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 1C4
- **BUSINESS PHONE:** 212-582-2211

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 161 BAY STREET
- **STREET 2:** SUITE 4900
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 1C4

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ONEX CORP ET AL
- **DATE OF NAME CHANGE:** 19950209

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 5)**

**Emerald Holding, Inc.**

*(Name of Issuer)*

**Common Stock, par value $0.01 per share**

*(Title of Class of Securities)*

**—**

*(CUSIP Number)*

**Colin Sam**<br>Onex Corporation<br>161 Bay Street P.O. Box 700<br>Toronto A6 M5J 2S1<br>1-416-362-7711

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

**05/09/2026**

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

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Corporation** | Name of reporting person<br>**Onex Corporation** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (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>**ONTARIO** | Citizenship or place of organization<br>**ONTARIO** | |
| 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>**184049617.00** |
| 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>**184049617.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**184049617.00** | Aggregate amount beneficially owned by each reporting person<br>**184049617.00** | |
| 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>**93.00%** | Percent of class represented by amount in Row (11)<br>**93.00%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Gerald W. Schwartz** | Name of reporting person<br>**Gerald W. Schwartz** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[ ] (a)<br>[x] (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>**ISRAEL** | Citizenship or place of organization<br>**ISRAEL** | |
| 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>**470583.00** |
| 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>**470583.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners GP Inc.** | Name of reporting person<br>**Onex Partners GP Inc.** | |
| 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>**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>**35039404.00** |
| 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>**35039404.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**35039404.00** | Aggregate amount beneficially owned by each reporting person<br>**35039404.00** | |
| 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>**17.7%** | Percent of class represented by amount in Row (11)<br>**17.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners III GP LP** | Name of reporting person<br>**Onex Partners III GP LP** | |
| 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>**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>**35039404.00** |
| 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>**35039404.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**35039404.00** | Aggregate amount beneficially owned by each reporting person<br>**35039404.00** | |
| 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>**17.7%** | Percent of class represented by amount in Row (11)<br>**17.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners III LP** | Name of reporting person<br>**Onex Partners III LP** | |
| 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>**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>**33135329.00** |
| 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>**33135329.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**33135329.00** | Aggregate amount beneficially owned by each reporting person<br>**33135329.00** | |
| 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>**16.7%** | Percent of class represented by amount in Row (11)<br>**16.7%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners III PV LP** | Name of reporting person<br>**Onex Partners III PV LP** | |
| 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>**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>**420116.00** |
| 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>**420116.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**420116.00** | Aggregate amount beneficially owned by each reporting person<br>**420116.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners III Select LP** | Name of reporting person<br>**Onex Partners III Select LP** | |
| 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>**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>**106562.00** |
| 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>**106562.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**106562.00** | Aggregate amount beneficially owned by each reporting person<br>**106562.00** | |
| 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>**0.1%** | Percent of class represented by amount in Row (11)<br>**0.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex American Holdings GP LLC** | Name of reporting person<br>**Onex American Holdings GP 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>**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>**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>**423159.00** |
| 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>**423159.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**423159.00** | Aggregate amount beneficially owned by each reporting person<br>**423159.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Limited Liability Company

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex US Principals LP** | Name of reporting person<br>**Onex US Principals LP** | |
| 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>**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>**423159.00** |
| 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>**423159.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**423159.00** | Aggregate amount beneficially owned by each reporting person<br>**423159.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners Holdings LLC** | Name of reporting person<br>**Onex Partners Holdings 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>**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>**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>**11125186.00** |
| 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>**11125186.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11125186.00** | Aggregate amount beneficially owned by each reporting person<br>**11125186.00** | |
| 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>**5.6%** | Percent of class represented by amount in Row (11)<br>**5.6%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Limited Liability Company

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex OP V Holdings SARL** | Name of reporting person<br>**Onex OP V Holdings SARL** | |
| 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>**N4** | Citizenship or place of organization<br>**N4** | |
| 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>**11125186.00** |
| 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>**11125186.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**11125186.00** | Aggregate amount beneficially owned by each reporting person<br>**11125186.00** | |
| 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>**5.6%** | Percent of class represented by amount in Row (11)<br>**5.6%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**1597257 Ontario Inc.** | Name of reporting person<br>**1597257 Ontario Inc.** | |
| 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>**ONTARIO** | Citizenship or place of organization<br>**ONTARIO** | |
| 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>**470583.00** |
| 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>**470583.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**New PCo II Investments Ltd.** | Name of reporting person<br>**New PCo II Investments Ltd.** | |
| 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>**ONTARIO** | Citizenship or place of organization<br>**ONTARIO** | |
| 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>**470583.00** |
| 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>**470583.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Limited Liability Company

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Advisor Subco III LLC** | Name of reporting person<br>**Onex Advisor Subco III 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>**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>**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>**470583.00** |
| 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>**470583.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | Aggregate amount beneficially owned by each reporting person<br>**470583.00** | |
| 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>**0.2%** | Percent of class represented by amount in Row (11)<br>**0.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** Limited Liability Company

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners Canadian GP Inc.** | Name of reporting person<br>**Onex Partners Canadian GP Inc.** | |
| 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>**ONTARIO** | Citizenship or place of organization<br>**ONTARIO** | |
| 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>**137461868.00** |
| 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>**137461868.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | |
| 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>**69.5%** | Percent of class represented by amount in Row (11)<br>**69.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Onex Partners V GP Limited** | Name of reporting person<br>**Onex Partners V GP Limited** | |
| 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>**CAYMAN ISLANDS** | Citizenship or place of organization<br>**CAYMAN ISLANDS** | |
| 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>**137461868.00** |
| 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>**137461868.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | |
| 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>**69.5%** | Percent of class represented by amount in Row (11)<br>**69.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **—** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**OPV Gem Aggregator LP** | Name of reporting person<br>**OPV Gem Aggregator LP** | |
| 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>**CAYMAN ISLANDS** | Citizenship or place of organization<br>**CAYMAN ISLANDS** | |
| 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>**137461868.00** |
| 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>**137461868.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | Aggregate amount beneficially owned by each reporting person<br>**137461868.00** | |
| 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>**69.5%** | Percent of class represented by amount in Row (11)<br>**69.5%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**PN** | Type of Reporting Person (See Instructions)<br>**PN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, par value $0.01 per share

**(b) Name of Issuer:**
Emerald Holding, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
100 Broadway, Fourth Floor, New York, NY, 10004

This Amendment No. 5 to Schedule 13D (this "Amendment No. 5") amends and supplements the Schedule 13D originally filed with the United States Securities and Exchange Commission (the "SEC") on June 29, 2020 (such Schedule 13D, as amended to date, the "Schedule 13D"), relating to the shares of common stock, par value $0.01 per share (the "Common Stock"), of Emerald Holding, Inc., a Delaware corporation (the "Issuer"), beneficially owned by the Reporting Persons. Capitalized terms used herein without definition shall have the meaning set forth in the Schedule 13D.

**Item 4. Purpose of Transaction**

On May 9, 2026, the Issuer entered into the Merger Agreement (as defined in Item 6 below) and the Issuer and the  Reporting Persons entered into the Support Agreement (as defined in Item 6 below). The information set forth in Item 6 below is incorporated by reference to this Item 4.

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

**(a)**
Item 5 of the Schedule 13D is hereby amended and restated in its entirety by inserting the following information:

The information contained on the cover pages is incorporated by reference to this Item 5.

The percentages on the cover pages are based on 197,909,233 shares of Common Stock outstanding as of March 27, 2026, as disclosed in the Issuer's definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission on April 9, 2026.

**(b)**
The information contained on the cover pages is incorporated by reference to this Item 5.

The amount of securities reported herein includes (i) 33,135,329 shares of Common Stock held of record by Onex Partners III LP, (ii) 1,377,397 shares of Common Stock held of record by Onex Partners III GP LP, (iii) 423,159 shares of Common Stock held of record by Onex US Principals LP, (iv) 420,116 shares of Common Stock held of record by Onex Partners III PV LP, (v) 11,125,186 shares of Common Stock held of record by Onex OP V Holdings SARL, (vi) 106,562 shares of Common Stock held of record by Onex Partners III Select LP, (vii) 470,583 shares of Common Stock held of record by Onex Advisor Subco III LLC, and (viii) 137,461,868 shares of Common Stock held of record by OPV Gem Aggregator LP.

**(c)**
Except as described in Item 4 above and Item 6 below, none of the Reporting Persons have engaged in any transactions in the Common Stock during the past sixty days.

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

Merger Agreement

On May 9, 2026, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement") with Emma Buyer, LLC, a Delaware limited liability company ("Parent"), and Emma Merger Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Parent ("Merger Sub"). Parent and Merger Sub are newly formed holding companies owned by funds managed by affiliates of Apollo Global Management, Inc. ("Apollo"). Pursuant to the Merger Agreement, upon the terms and subject to the conditions set forth therein, Merger Sub will be merged with and into the Issuer, with the Issuer surviving as a wholly-owned subsidiary of Parent (the "Merger").

The board of directors of the Issuer (the "Board") unanimously (i) determined that the Merger Agreement and the transactions contemplated by the Merger Agreement, including the Merger, are fair to, and in the best interests of, the Issuer and its stockholders, (ii) approved and declared advisable the Merger Agreement and the transactions contemplated by the Merger Agreement, including the Merger, (iii) authorized and approved the execution, delivery and performance by the Issuer of the Merger Agreement, including the completion of the Merger, upon the terms and subject to the conditions contained therein, and (iv) recommended the adoption of the Merger Agreement by the Issuer's stockholders, subject to the terms and conditions of the Merger Agreement.

On May 9, 2026, following the execution of the Merger Agreement, and pursuant to the Support Agreement (as defined below), the Reporting Persons, as holders of over 90% of the voting power of the Common Stock, adopted the Merger Agreement and approved the transactions contemplated thereby, including the Merger, by written consent (the "Written Consent").

Support Agreement

Simultaneously with the execution of the Merger Agreement, on May 9, 2026, the Issuer entered into a support agreement with Parent, Merger Sub and the Reporting Persons (the "Support Agreement"), pursuant to which the Reporting Persons agreed to, among other things, and subject to the terms and conditions set forth therein, deliver the Written Consent, vote their shares of Common Stock in favor of the Merger Agreement and the transactions contemplated thereby, including the Merger and vote their shares of Common Stock against any alternative acquisition proposals and to certain confidentiality. The Support Agreement will automatically terminate if the Merger Agreement is terminated in accordance with its terms.

### 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:** Onex Corporation

**Signature:** /s/  Colin Sam

**Name/Title:** Colin Sam, Managing Director

**Date:** 05/11/2026

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:** Gerald W. Schwartz

**Signature:** /s/ Gerald W. Schwartz

**Name/Title:** Gerald W. Schwartz

**Date:** 05/11/2026

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:** Onex Partners GP Inc.

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Vice President

**Date:** 05/11/2026

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:** Onex Partners III GP LP

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Vice President,  By: Onex Partners GP Inc., its General Partner

**Date:** 05/11/2026

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:** Onex Partners III LP

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Vice President,  By: Onex Partners III GP LP, its General Partner, By: Onex Partners GP Inc., its General Partner

**Date:** 05/11/2026

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:** Onex Partners III PV LP

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Vice President, By: Onex Partners III GP LP, its General Partner, By: Onex Partners GP Inc., its General Partner

**Date:** 05/11/2026

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:** Onex Partners III Select LP

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Vice President, By: Onex Partners III GP LP, its General Partner, By: Onex Partners GP Inc., its General Partner

**Date:** 05/11/2026

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:** Onex American Holdings GP LLC

**Signature:** /s/ Amir Motamedi

**Name/Title:** Amir Motamedi, Director

**Date:** 05/11/2026

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:** Onex US Principals LP

**Signature:** /s/ Amir Motamedi

**Name/Title:** Amir Motamedi, Director, By: Onex American Holdings GP LLC, its General Partner

**Date:** 05/11/2026

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:** Onex Partners Holdings LLC

**Signature:** /s/ Amir Motamedi

**Name/Title:** Amir Motamedi, Director

**Date:** 05/11/2026

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:** Onex OP V Holdings SARL

**Signature:** /s/ Amir Motamedi

**Name/Title:** Amir Motamedi, Type A Manager

**Date:** 05/11/2026

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:** 1597257 Ontario Inc.

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Managing Director - Tax

**Date:** 05/11/2026

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:** New PCo II Investments Ltd.

**Signature:** /s/ Michelle Iskander

**Name/Title:** Michelle Iskander, Secretary

**Date:** 05/11/2026

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:** Onex Advisor Subco III LLC

**Signature:** /s/ Joel Greenberg

**Name/Title:** Joel Greenberg, Director

**Date:** 05/11/2026

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:** Onex Partners Canadian GP Inc.

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Director

**Date:** 05/11/2026

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:** Onex Partners V GP Limited

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Director

**Date:** 05/11/2026

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:** OPV Gem Aggregator LP

**Signature:** /s/ David Copeland

**Name/Title:** David Copeland, Director, By: Onex Partners V GP Limited, its General Partner

**Date:** 05/11/2026