Convertible Promissory Note Addendum Sample Contracts

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum No. 3 (August 12th, 2013)

This addendum is to acknowledge the fact that Stephen and Nancy Turner, by signing below, have agreed to extend the maturity date of the Convertible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $20,000 on September 25, 2012 (the "Issue Date"). Whereas the original maturity date was 60 days from the Issue Date (the "Maturity Date"), extended to February 22, 2013 by Convertible Promissory Note Addendum No. 1 dated November 30, 2012 and further extended to May 31, 2013 by Convertible Promissory Note Addendum No. 2 dated March 22, 2013, this addendum further extends the Maturity Date to December 31, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Scott S. Segal, by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sums of $50,000 and $25,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Stephen Turner and Nancy Turner, by signing below, have agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $20,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Stanley M. Hostler, by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sums of $50,000 and $20,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Virginia Child, by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sums of $50,000 and $100,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Stanley M. Hostler and Virginia Child, by signing below, have agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $68,216 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Ed Roberson, by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $35,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Summit Resources, Inc., by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sums of $100,000 and $25,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (December 6th, 2012)

This addendum is to acknowledge the fact that Leo Harris, by signing below, has agreed to extend the maturity date for the Converible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $50,000 on September 25, 2012 (Issue Date). Whereas the original maturity was 60 days from the Issue Date, which results in a Maturity Date of November 24, 2012, this addendum extends the Maturity Date by 90 days to February 22, 2013.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (October 4th, 2012)

This addendum is to acknowledge the fact that Summit Resources, Inc., by signing below, has agreed to extend the maturity date for the Convertible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $500,000 on December 20, 201 1 (Issue Date). Whereas the original maturity was 180 days from the Issue Date, which resulted in a Maturity Date of June 17, 2012, and an addendum dated June 15, 2012 extended the Maturity Date by 90 days to September 15, 2012, this addendum extends the Maturity Date by 90 days to December 14, 2012.

Protea Biosciences Group, Inc. Convertible Promissory Note Addendum (October 4th, 2012)

This addendum is to acknowledge the fact that Stanley Hostler, by signing below, has agreed to extend the maturity date for the Convertible Promissory Note issued by Protea Biosciences Group, Inc., a Delaware corporation (the "Company"), for the sum of $250,000 on December 20, 2011 (Issue Date). Whereas the original maturity was 180 days from the Issue Date, which resulted in a Maturity Date of June 17, 2012, and an addendum dated June 15, 2012 extended the Maturity Date by 90 days to September 15, 2012, this addendum extends the Maturity Date by 90 days to December 14, 2012.