Common Contracts

As of November 14, 2008 Leonard S. Schleifer, M.D., Ph.D. President and Chief Executive Officer, Regeneron Pharmaceuticals, Inc. 777 Old Saw Mill River Road Tarrytown, New York 10591-6707 Dear Len:

Employment Agreement • February 26th, 2009 • Regeneron Pharmaceuticals Inc • Pharmaceutical preparations • New York

• Contract Type
  Employment Agreement
• Filed
  February 26th, 2009
• Company
  Regeneron Pharmaceuticals Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

This employment agreement will replace and update the agreement dated December 20, 2002 between Regeneron Pharmaceuticals, Inc. ("Regeneron" or the "Company") and you. The compensation obligations of the Company under this agreement (the "Agreement") will be reduced by any amounts actually paid by any affiliate, subsidiary, and related entity controlled by or under common control with the Company ("Related Entity").

As of December 20, 2002 Leonard S. Schleifer, M.D., Ph.D. President and Chief Executive Officer, Regeneron Pharmaceuticals, Inc. 777 Old Saw Mill River Road Tarrytown, New York 10591-6707 Dear Len:

Employment Agreement • March 31st, 2003 • Regeneron Pharmaceuticals Inc • Pharmaceutical preparations • New York

• Contract Type
  Employment Agreement
• Filed
  March 31st, 2003
• Company
  Regeneron Pharmaceuticals Inc
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

This employment agreement will replace and update the agreement dated February 12, 1998 between Regeneron Pharmaceuticals, Inc. (“Regeneron” or the “Company”) and you. The compensation obligations of the Company under this agreement (the “Agreement”) will be reduced by any amounts actually paid by any affiliate, subsidiary, and related entity controlled by or under common control with the Company (“Related Entity”).