EDGAR Filing Documents for 0001181431-11-023253

Form 4 - Statement of changes in beneficial ownership of securities:

SEC Accession No. 0001181431-11-023253

Filing Date

2011-04-08

Accepted

2011-04-08 17:00:41

Documents

Period of Report

2011-04-06

Document Format Files

Seq	Description	Document	Type	Size
1	FORM 4	rrd308171.html	4
1	FORM 4	rrd308171.xml	4	10412
2	EXHIBIT	rrd276325_311854.htm	EX-99.1	1099
	Complete submission text file	0001181431-11-023253.txt		13744

Mailing Address 500 KENDALL STREET CAMBRIDGE MA 02142

Business Address 500 KENDALL STREET CAMBRIDGE MA 02142 6172527500

GENZYME CORP (Issuer) CIK: 0000732485 (see all company filings)

IRS No.: 061047163 | State of Incorp.: MA | Fiscal Year End: 1231
SIC: 2836 Biological Products, (No Diagnostic Substances)

Mailing Address 174 AVENUE DE FRANCE PARIS I0 75013

Business Address 174 AVENUE DE FRANCE PARIS I0 75013 33153774400

SANOFI-AVENTIS (Reporting) CIK: 0001121404 (see all company filings)

State of Incorp.: I0 | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-14680 | Film No.: 11750170
SIC: 2834 Pharmaceutical Preparations

Mailing Address C/O SANOFI-AVENTIS 270 ALABANY STREET CAMBRIDGE MA 02139

Business Address C/O SANOFI-AVENTIS 270 ALABANY STREET CAMBRIDGE MA 02139 011 33 1 53 77 48 96

GC Merger Corp. (Reporting) CIK: 0001501770 (see all company filings)

State of Incorp.: MA | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-14680 | Film No.: 11750171