# Blackstone Infrastructure Poseidon Co-Invest L.P. — Form D/A

Blackstone Infrastructure Poseidon Co-Invest L.P. of NEW YORK, NY, a pooled investment fund, filed a Form D amendment with the SEC on 2026-02-06. $71.5M was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2026-02-06
- Form: D/A
- Accession: 0002079294-26-000001
- Industry: Pooled Investment Fund
- Exemptions: 06b,3C,3C.7
- Amount sold: $71.5M
- Investors: 3
- Date of first sale: 2025-08-28
- Security types: fund interests
- SEC file number: 021-554979

## Issuer

- Name: Blackstone Infrastructure Poseidon Co-Invest L.P.
- CIK: 0002079294
- Entity type: Limited Partnership
- Jurisdiction: DELAWARE
- Incorporated: 2025
- Address: 345 PARK AVENUE, NEW YORK, NY, 10154
- Phone: 212-583-5000

## Officers, directors & promoters (23)

| Name | Role | Location |
| --- | --- | --- |
| n/a Blackstone Infrastructure Associates L.P. | Promoter | New York, NY |
| n/a BIA GP L.L.C. | Related Person | New York, NY |
| n/a BIA GP L.P. | Related Person | New York, NY |
| n/a Blackstone Infrastructure Advisors L.L.C. | Related Person | New York, NY |
| n/a Blackstone Infrastructure Associates L.P. | Related Person | New York, NY |
| Sean Klimczak | Related Person | New York, NY |
| Michael Knauss | Related Person | New York, NY |
| Eric Liaw | Related Person | New York, NY |
| Christopher Placca | Related Person | New York, NY |
| Vikrant Sawhney | Related Person | New York, NY |
| Paul Schlaack | Related Person | New York, NY |
| Christopher Striano | Related Person | New York, NY |
| Eric Liaw | Executive Officer | New York, NY |
| Christopher Striano | Executive Officer | New York, NY |
| Vikrant Sawhney | Executive Officer | New York, NY |
| Michael Knauss | Executive Officer | New York, NY |
| n/a BIA GP L.L.C. | Promoter | New York, NY |
| n/a BIA GP L.P. | Promoter | New York, NY |
| Christopher Placca | Executive Officer | New York, NY |
| Sean Klimczak | Executive Officer | New York, NY |
| n/a Blackstone Infrastructure Associates Non-ECI L.P. | Promoter | New York, NY |
| Paul Schlaack | Executive Officer | New York, NY |
| n/a Blackstone Infrastructure Advisors L.L.C. | Promoter | New York, NY |

## Other filings by this issuer (1)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2025-08-15](https://search.stillhousedata.com/formd/0002079294-25-000001) | D | — | — |

## More

- [CIK 2079294 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=2079294&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0002079294-26-000001.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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