# Sio Partners LP — Form D/A

Sio Partners LP of NEW YORK, NY, a pooled investment fund, filed a Form D amendment with the SEC on 2021-03-23. $345.7M was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2021-03-23
- Form: D/A
- Accession: 0001363420-21-000003
- Industry: Pooled Investment Fund
- Exemptions: 06b, 3C, 3C.1
- Amount sold: $345.7M
- Minimum investment: $1.0M
- Investors: 176
- Date of first sale: 2006-06-05
- Security types: fund interests
- SEC file number: 021-89849

## Issuer

- Name: Sio Partners LP
- CIK: 0001363420
- Entity type: Limited Partnership
- Jurisdiction: DELAWARE
- Incorporated: 2006
- Address: C/O SIO CAPITAL MANAGEMENT, LLC, NEW YORK, NY, 10016
- Phone: 212-601-9792

## Officers, directors & promoters (7)

| Name | Role | Location |
| --- | --- | --- |
| N/A SIO CAPITAL MANAGEMENT, LLC | Promoter | NEW YORK, NY |
| N/A SIO CAPITAL MANAGEMENT, LLC | Related Person | NEW YORK, NY |
| MICHAEL CASTOR | Executive Officer | NEW YORK, NY |
| MICHAEL CASTOR | Related Person | NEW YORK, NY |
| N/A SIO GP, LLC | Promoter | NEW YORK, NY |
| N/A SIO GP, LLC | Related Person | NEW YORK, NY |
| Jim Laird | Executive Officer | New York, NY |

## Other filings by this issuer (13)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2026-02-19](https://search.stillhousedata.com/formd/0001363420-26-000001) | D/A | — | $478.4M |
| [2025-02-24](https://search.stillhousedata.com/formd/0001363420-25-000001) | D/A | — | $468.1M |
| [2024-03-06](https://search.stillhousedata.com/formd/0001363420-24-000001) | D/A | — | $459.3M |
| [2023-03-08](https://search.stillhousedata.com/formd/0001363420-23-000001) | D/A | — | $422.9M |
| [2022-03-22](https://search.stillhousedata.com/formd/0001363420-22-000001) | D/A | — | $403.7M |
| [2020-03-24](https://search.stillhousedata.com/formd/0001363420-20-000001) | D/A | — | $335.9M |
| [2019-03-28](https://search.stillhousedata.com/formd/0001363420-19-000002) | D/A | — | $309.0M |
| [2018-04-03](https://search.stillhousedata.com/formd/0001363420-18-000001) | D/A | — | $267.8M |
| [2017-04-06](https://search.stillhousedata.com/formd/0001363420-17-000001) | D/A | — | $260.7M |
| [2016-04-13](https://search.stillhousedata.com/formd/0001363420-16-000002) | D/A | — | $244.1M |
| [2015-04-03](https://search.stillhousedata.com/formd/0001363420-15-000001) | D/A | — | $203.9M |
| [2014-04-03](https://search.stillhousedata.com/formd/0001363420-14-000003) | D/A | — | $179.5M |
| [2009-04-21](https://search.stillhousedata.com/formd/0001019056-09-000477) | D | — | $115.9M |

## More

- [CIK 1363420 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1363420&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001363420-21-000003.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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