0001144204-12-058598 Sample Contracts

STOCK PURCHASE AGREEMENT

Stock Purchase Agreement • October 31st, 2012 • Synthetic Biologics, Inc. • Pharmaceutical preparations • New York

• Contract Type
  Stock Purchase Agreement
• Filed
  October 31st, 2012
• Company
  Synthetic Biologics, Inc.
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

This Stock Purchase Agreement (this “Agreement”) is dated as of October 25, 2012, among Synthetic Biologics, Inc., a Nevada corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”).

REGISTRATION RIGHTS AGREEMENT

Registration Rights Agreement • October 31st, 2012 • Synthetic Biologics, Inc. • Pharmaceutical preparations

• Contract Type
  Registration Rights Agreement
• Filed
  October 31st, 2012
• Company
  Synthetic Biologics, Inc.
• Industry
  Pharmaceutical preparations

This Registration Rights Agreement (this “Agreement”) is made and entered into as of October 25, 2012 between Synthetic Biologics, Inc., a Nevada corporation (the “Company”) and each of the several purchasers signatory hereto (each such purchaser, a “Purchaser” and, collectively, the “Purchasers”).

JOINDER AGREEMENT

Joinder Agreement • October 31st, 2012 • Synthetic Biologics, Inc. • Pharmaceutical preparations • New York

• Contract Type
  Joinder Agreement
• Filed
  October 31st, 2012
• Company
  Synthetic Biologics, Inc.
• Industry
  Pharmaceutical preparations
• Jurisdiction
  New York

THIS JOINDER AGREEMENT, executed as of this 25th day of October, 2012, is made and entered into by the undersigned with reference to the following facts: