Exhibit 1

JOINT FILING AGREEMENT

This Joint Filing Agreement, dated as of May 17, 2010, is entered into by and among BAM Capital, LLC, a Delaware limited liability company, BAM Management, LLC, a Delaware limited liability company, BAM Offshore Management, LLC, a Delaware limited liability company, AM Investment Partners, LLC, a Delaware limited liability company, AM Investment Partners GP, Ltd., a Cayman Islands exempted company, AM Investment General Partner, LLC, a Delaware limited liability company, BAM Opportunity Fund, L.P., a Delaware limited partnership, BAM Total Return Master Fund, Ltd., a Cayman Islands exempted company, AM Master Fund III, LP, a Cayman Islands exempted company, Ross Berman, an individual, Hal Mintz, an individual, Adam Stern, an individual, and Mark Friedman, an individual (all of the foregoing are collectively referred to herein as the "Filing Entities").

Each of the Filing Entities may be required to file with the United States Securities and Exchange Commission a statement on Schedule 13G (and amendments thereto) with respect to shares of common stock, par value $0.01 per share, of Medivation, Inc., a Delaware corporation, beneficially owned by them from time to time.

Pursuant to and in accordance with Rule 13(d)(1)(k) promulgated under the Securities Exchange Act of 1934, as amended, the parties hereby agree to file a single statement on Schedule 13G (and any amendments thereto) on behalf of each of the parties, and hereby further agree to file this Joint Filing Agreement as an exhibit to such statement, as required by such rule.

This Joint Filing Agreement may be terminated by any of the Filing Entities upon one week's prior written notice or such lesser period of notice as the Filing Entities may mutually agree.

Executed and delivered as of the date first above written.

BAM Opportunity Fund, L.P.

By:  BAM Capital, LLC

        its General Partner

By: /s/ Ross Berman                                                                   

Name:  Ross Berman

        Title:   Managing Member

BAM Total Return Master Fund, Ltd.

By:  BAM Offshore Management, LLC

        its Investment Manager

By: /s/ Ross Berman                                                                   

Name:  Ross Berman

        Title:   Managing Member

AM Master Fund III, LP

By:  AM Investment General Partner, LLC

        its General Partner

By: /s/ Adam Stern                                                                    

Name:  Adam Stern

        Title:   Managing Member

BAM Capital, LLC

By: /s/ Ross Berman                                                                          

       Name:  Ross Berman

       Title:  Managing Member

BAM Management, LLC

By: /s/ Ross Berman                                                                           

       Name:  Ross Berman

       Title:  Managing Member

BAM Offshore Management, LLC

By: /s/ Ross Berman                                                                          

       Name:  Ross Berman

       Title:  Managing Member

AM Investment Partners, LLC

By: /s/ Adam Stern                                                                   

Name:  Adam Stern

        Title:   Managing Member

AM Investment Partners GP, Ltd.

By: /s/ Adam Stern                                                                    

Name:   Adam Stern

        Title:    Director

AM Investment General Partner, LLC

By: /s/ Adam Stern                                                                    

Name:  Adam Stern

        Title:   Managing Member

/s/ Ross Berman                                                               

Ross Berman

/s/ Hal Mintz                                                                           

Hal Mintz

/s/ Adam Stern                                                                           

Adam Stern

/s/ Mark Friedman                                                               

Mark Friedman