Precision Therapeutics Inc. Note Agreements

Amendment #5 to the Amended and Restated Senior Secured Promissory Note originally issued on September 28, 2018 by and among the Company and L2 Capital, LLC (Filed With SEC on September 30, 2020)

Amendment #3 to the Senior Secured Promissory Note originally issued on September 27, 2019 by and among the Company and Oasis Capital, LLC (Filed With SEC on September 30, 2020)

Amendment #2 to the Senior Secured Promissory Note originally issued on February 5, 2020 by and among the Company and Oasis Capital, LLC (Filed With SEC on September 30, 2020)

Amendment #4 to the Amended and Restated Senior Secured Promissory Note originally issued on September 28, 2018 by and among the Company and L2 Capital, LLC (Filed With SEC on July 20, 2020)

Amendment #2 to the Senior Secured Promissory Note originally issued on September 27, 2019 by and among the Company and Oasis Capital, LLC (Filed With SEC on July 20, 2020)

Amendment #1 to the Senior Secured Promissory Note originally issued on February 5, 2020 by and among the Company and Oasis Capital, LLC (Filed With SEC on July 20, 2020)

Promissory Note dated April 20, 2020 between the Company and Park State Bank (Filed With SEC on May 1, 2020)

Amendment #3 to the Amended and Restated Senior Secured Promissory Note originally issued on September 28, 2018 by and among the Company and L2 Capital, LLC (Filed With SEC on March 23, 2020)

Amendment #1 to the Senior Secured Promissory Note originally issued on September 27, 2019 by and among the Company and Oasis Capital, LLC (Filed With SEC on March 23, 2020)

Senior Secured Promissory Note dated as f February 5, 2020 (Filed With SEC on February 7, 2020)

Promissory Note to Carl Schwartz dated January 31, 2020 (Filed With SEC on February 4, 2020)

Promissory Note dated November 26, 2019 issued to L2 Capital, LLC (the same form was used for the Promissory Notes dated December 10, 2019 and will be used for a subsequent... (Filed With SEC on December 19, 2019)

Amendment No. 2 dated December 12, 2019 to Amended and Restated Senior Secured Promissory Note issued to L2 Capital, LLC (Filed With SEC on December 17, 2019)

Senior Secured Promissory Note issued to Oasis Capital, LLC dated September 27, 2019 (Filed With SEC on September 30, 2019)

Amendment No. 1 dated September 27, 2019 to Amended and Restated Senior Secured Promissory Note issued to L2 Capital, LLC (Filed With SEC on September 30, 2019)

Form of Amended and Restated Promissory Note payable to Carl Schwartz (Filed With SEC on August 19, 2019)

Promissory Note issued to Carl Schwartz dated May 30, 2019 (Filed With SEC on June 4, 2019)

Amended and Restated Promissory Note issued to Carl Schwartz dated February 6, 2019 (Filed With SEC on February 12, 2019)

Amended and Restated Promissory Note issued to L2 Capital, LLC dated February 7, 2019 (Filed With SEC on February 12, 2019)

Amended and Restated Promissory Note issued to Peak One Opportunity Fund, LP dated February 7, 2019 (Filed With SEC on February 12, 2019)

Amended and Restated Promissory Note issued to Carl Schwartz dated January 8, 2019 (Filed With SEC on January 14, 2019)

Promissory Note issued to Carl Schwartz dated November 30, 2018 (Filed With SEC on December 7, 2018)

Senior Secured Promissory Note issued to L2 Capital, LLC dated September 28, 2018 (Filed With SEC on October 4, 2018)

Senior Secured Promissory Note issued to Peak One Opportunity Fund, LP dated September 28, 2018 (Filed With SEC on October 4, 2018)

Form of Amendment to Senior Convertible Notes and Agreement by and between Skyline Medical Inc. and Senior Convertible Noteholder Dated as of ____________, 2015... (Filed With SEC on July 24, 2015)

[FORM OF SENIOR CONVERTIBLE NOTE] (Filed With SEC on July 24, 2014)

BIODRAINMEDICAL, Inc. CONVERTIBLE PROMISSORY NOTE (Filed With SEC on June 12, 2013)

PROMISSORY NOTE (Filed With SEC on March 14, 2013)

BIODRAINMEDICAL, Inc. CONVERTIBLE PROMISSORY NOTE (Filed With SEC on January 15, 2013)

NOTE PURCHASE AGREEMENT (Filed With SEC on April 3, 2012)

AMENDED AND RESTATED NOTE PURCHASE AGREEMENT (Filed With SEC on April 3, 2012)

NOTE PURCHASE AGREEMENT (Filed With SEC on January 24, 2012)

BIODRAINMEDICAL, INC. SECUREDCONVERTIBLE NOTE DUE APRIL __, 2008 $150,000.00 July __, 2007 (Filed With SEC on January 12, 2009)

PRECISION THERAPEUTICS, INC. NOTE PURCHASE AGREEMENT PRECISION THERAPEUTICS, INC. NOTE PURCHASE AGREEMENT (Filed With SEC on November 5, 2007)

PROMISSORY NOTE December 29, 2006 (Filed With SEC on August 24, 2007)