---
title: "Onex Partners V Annex I LP SEC filings"
url: https://altstreet.investments/edgar/2157588
kind: edgar-entity
updated: 2026-11-11
publisher: AltStreet (https://altstreet.investments)
license: Public factual pages may be read, quoted and cited with attribution and a link. Bulk redistribution is not permitted.
---

# Onex Partners V Annex I LP: SEC filings and what they report

Onex Partners V Annex I LP is a Delaware-domiciled pooled investment fund vehicle affiliated with the Onex Partners V fund family, with executive officer entities Onex Partners V GP LP, Onex Partners V GP Limited, and Onex Partners Manager LP. The Form D (filed 2026-11-10, original filing) claims 506(b) and 3(c)(1) exemptions with total amount sold, investor count, first sale date, and minimum investment all undisclosed, consistent with a pre-open institutional fund filing. No parent platform or sibling entities are currently matched in the AltStreet database.

| Field | Value |
| --- | --- |
| Entity | Onex Partners V Annex I LP |
| CIK | 2157588 |
| Filing family | 506(b), 3(c)(1) |
| Entity type | fund vehicle |
| Manager (as filed) | Onex Partners |
| Newest fact-bearing filing | November 10, 2026, accession 0002157588-26-000001 |
| Total sold (as reported) | $0 |
| Vintage | 2026 |

## Related persons (Form D Item 3)

| Name | Relationship |
| --- | --- |
| MATTHEW MURPHY | Executive Officer, Promoter |
| N/A ONEX PARTNERS V GP LP | Executive Officer |
| N/A ONEX PARTNERS V GP LIMITED | Executive Officer |
| N/A ONEX PARTNERS MANAGER LP | Executive Officer |
| AMIR MOTAMEDI | Director |


## More

- Entity page (HTML, with events, parties and the platform record): https://altstreet.investments/edgar/2157588
- SEC EDGAR filing index: https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0002157588&owner=include&count=40
- Signal history, evidence passages and the entity graph are AltStreet Terminal features: https://altstreet.investments/terminal

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Source page: https://altstreet.investments/edgar/2157588
Machine index: https://altstreet.investments/llms.txt
AltStreet reads what platforms, funds and issuers file with the SEC and what they tell investors, and publishes the difference. Figures are as filed or as captured on the date stated; nothing here is investment advice.