# Magnetar Constellation Fund I-B LP — Form D/A

Magnetar Constellation Fund I-B LP of EVANSTON, IL, a pooled investment fund, filed a Form D amendment with the SEC on 2011-02-15. $12.8M was reported sold. Industry: Pooled Investment Fund.

## Offering

- Filed: 2011-02-15
- Form: D/A
- Accession: 0001479949-11-000002
- Industry: Pooled Investment Fund
- Exemptions: 06, 3C, 3C.7
- Amount sold: $12.8M
- Investors: 2
- Date of first sale: 2010-01-01
- Security types: fund interests
- SEC file number: 021-138569

## Issuer

- Name: Magnetar Constellation Fund I-B LP
- CIK: 0001479951
- Entity type: Limited Partnership
- Jurisdiction: DELAWARE
- Incorporated: 2009
- Address: MAGNETAR FINANCIAL LLC, EVANSTON, IL, 94105
- Phone: 847-905-4400

## Officers, directors & promoters (6)

| Name | Role | Location |
| --- | --- | --- |
| Mike N Turro | Executive Officer | Evanston, IL |
| n/a Magnetar Financial LLC | Promoter | Evanston, IL |
| Ross N Laser | Executive Officer | Evanston, IL |
| Alec N Litowitz | Executive Officer | Evanston, IL |
| David N Snyderman | Executive Officer | Evanston, IL |
| Michael N Turro | Executive Officer | Evanston, IL |

## Other filings by this issuer (2)

| Filed | Form | Offering | Sold |
| --- | --- | --- | --- |
| [2012-02-15](https://search.stillhousedata.com/formd/0001479949-12-000002) | D/A | — | $12.8M |
| [2010-02-09](https://search.stillhousedata.com/formd/0001479951-10-000002) | D | — | — |

## More

- [CIK 1479951 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1479951&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/formd/0001479949-11-000002.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.
