AMERICAN SHARED HOSPITAL SERVICES Contracts & Agreements

Fourth Amendment to Purchased Services Agreement dated April 20, 2021between GK Financing, LLC and Kettering Medical Center (Filed With SEC on August 14, 2023)

Fifth Amendment to Purchased Services Agreement dated May 1, 2023between GK Financing, LLC and Kettering Medical Center (Filed With SEC on August 14, 2023)

Form of American Shared Hospital Services Incentive Compensation Plan Restricted Stock Unit Issuance Agreement (Filed With SEC on May 12, 2023)

Form of American Shared Hospital Services Incentive Compensation Plan Notice of Grant of Incentive Stock Option (Filed With SEC on May 12, 2023)

Third Amendment to Lease Agreement for a Gamma Knife Unit (Perfexion Upgrade) dated as of June 1, 2020 between GK Financing, LLC and Methodist Healthcare System of San Antonio, LTD (Filed With SEC on May 12, 2023)

Offer Letter of Employment, dated April 12, 2023 between Robert Hiatt and American Shared Hospital Services (Filed With SEC on April 18, 2023)

Offer Letter of Employment, dated August 26, 2022 between Peter Gaccione and American Shared Hospital Services (Filed With SEC on September 1, 2022)

Tenth Amendment Agreement dated as of March 25, 2021 to the GK Financing, LLC Operating Agreement between American Shared Radiosurgery Services, Inc. and GKV Investments, Inc (Filed With SEC on March 30, 2022)

Addendum Five to Lease Agreement for a Gamma Knife Unit dated as of April 28, 2021 between GK Financing, LLC and OSF Healthcare System (Filed With SEC on March 30, 2022)

Fourth Amendment to Purchased Services Agreement dated as of July 28, 2021 between GK Financing, LLC and University of Southern California (Filed With SEC on November 10, 2021)

American Shared Hospital Services Incentive Compensation Plan, as amended (Filed With SEC on July 1, 2021)

Amendment Two to Equipment Lease Agreement (Reload) dated as of October 7, 2020 between GK Financing, LLC and Northern Westchester Hospital Association (Filed With SEC on May 13, 2021)

Amendment One to Leksell Gamma Knife Perfexion Purchased Services Agreement dated as of March 27, 2014 between GKF Financing, LLC and PeaceHealth Sacred Heart Medical Center at... (Filed With SEC on May 13, 2021)

Credit Agreement dated as of April 9, 2021 among American Shared Hospital Services, PBRT Orlando, LLC and GK Financing, LLC as the initial co-Borrowers, and American Shared... (Filed With SEC on April 15, 2021)

Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934 (Filed With SEC on April 6, 2021)

Addendum Four to Lease Agreement for a Gamma Knife Unit dated as of February 6, 2020 between GK Financing, LLC and OSF Healthcare System (Filed With SEC on April 6, 2021)

Icon Upgrade and Amendment Two to Equipment Lease Agreement for a Gamma Knife Unit dated as of October 15, 2019 between GK Financing, LLC and Lovelace Health Systems, LLC (Filed With SEC on November 13, 2020)

Third Amendment to Purchased Services Agreement dated as of June 30, 2020 between GK Financing, LLC and University of Southern California (Filed With SEC on November 13, 2020)

First Amendment to Lease Agreement for a Gamma Knife Unit (Perfexion upgrade) dated as of April 23, 2020 between GK Financing, LLC and Tufts Medical Center, Inc (Filed With SEC on August 14, 2020)

Fourth Amendment to Purchased Services Agreement (for a Gamma Knife Unit) dated as of May 1, 2019 between GK Financing, LLC and Jackson HMA, LLC (Filed With SEC on May 11, 2020)

Third Amendment to Purchased Services Agreement (for a Gamma Knife Unit) dated as of March 28, 2019 between GK Financing, LLC and Kettering Medical Center (Filed With SEC on November 7, 2019)

American Shared Hospital Services Incentive Compensation Plan as Amended and Restated Effective June 21, 2019 (Filed With SEC on August 13, 2019)

Equipment Lease Agreement (for a Gamma Knife Unit) dated as of May 8, 2018 between The Methodist Hospitals, Inc. and GK Financing, LLC (Filed With SEC on May 13, 2019)

Addendum Five to Lease Agreement for a Gamma Knife Unit dated as of April 25, 2017 between the Community Hospital Group, Inc. dba JFK Medical Center and GK Financing, LLC (Filed With SEC on August 9, 2018)

American Shared Hospital Services Incentive Compensation Plan as amended and restated effective June 27, 2017 (Filed With SEC on August 9, 2018)

First Amendment to Equipment Lease Agreement (for a Gamma Knife unit) dated as of February 14, 2018 between Bryan Medical Center and GK Financing, LLC (Filed With SEC on May 10, 2018)

Equipment Lease Agreement (for a Gamma Knife Unit) dated as of February 21, 2017 between Bryan Medical Center and GK Financing, LLC (Filed With SEC on November 13, 2017)

Second Amendment to Lease Agreement for a Gamma Knife Unit dated as of June 30, 2006 between Yale - New Haven Ambulatory Services Corporation, Yale New Haven Hospital, Inc. a/k/a... (Filed With SEC on November 13, 2017)

ADDENDUM FOUR TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on August 10, 2017)

SECOND AMENDMENT TO EQUIPMENT LEASEAGREEMENT (Filed With SEC on August 10, 2017)

ADDENDUM FOUR TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on May 15, 2017)

ADDENDUM THREE TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on March 27, 2017)

AMERICAN SHARED HOSPITAL SERVICES INCENTIVE COMPENSATION PLAN PERFORMANCE SHARE AWARD AGREEMENT (Filed With SEC on March 27, 2017)

PURCHASED SERVICES AGREEMENT (Filed With SEC on August 11, 2016)

FIRST AMENDMENT TO PURCHASED SERVICES AGREEMENT (Filed With SEC on August 11, 2016)

ADDENDUM TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on August 11, 2016)

ADDENDUM TWO TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on August 11, 2016)

ADDENDUM THREE TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on August 11, 2016)

PROTON BEAM RADIATION THERAPY LEASEAGREEMENT (Filed With SEC on August 11, 2016)

AMENDMENT ONE TO PROTON BEAM RADIATION THERAPY LEASE AGREEMENT (Filed With SEC on August 11, 2016)

EIGHTH AMENDMENT AGREEMENT (Filed With SEC on March 30, 2016)

NINTH AMENDMENT AGREEMENT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on March 30, 2016)

ADDENDUM TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM TWO TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

AMENDMENTTO LEASE AGREEMENTFOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENTFOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

ASSIGNMENT, ASSUMPTION AND AMENDMENTOF LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

FIRST AMENDMENT TO LEASE AGREEMENTFOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

SECOND AMENDMENT TO LEASE AGREEMENT FORA GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FORA GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM ONE TO LEASE AGREEMENT FOR A GAMMAKNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM TWO TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM TO LEASE AGREEMENT FOR A GAMMAKNIFE UNIT (Filed With SEC on March 30, 2016)

ADDENDUM TWO LEASE AGREEMENT FOR A GAMMA KNIFE (Filed With SEC on March 30, 2016)

ADDENDUM THREE TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on March 30, 2016)

ADDENDUM FOUR TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

AMENDMENT THREE TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on March 30, 2016)

LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on March 30, 2016)

EQUIPMENT LEASE AGREEMENT (Filed With SEC on March 30, 2016)

ADDENDUM ONE TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on March 30, 2016)

AMENDMENT TO EQUIPMENT LEASEAGREEMENT (Filed With SEC on March 30, 2016)

INDEMNIFICATION AGREEMENT (Filed With SEC on March 30, 2016)

ADDENDUM TWO TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on November 12, 2015)

AMERICAN SHARED HOSPITAL SERVICES 2006 STOCK INCENTIVE PLAN articleOne GENERALPROVISIONS (Filed With SEC on August 19, 2015)

AMERICAN SHARED HOSPITAL SERVICES INCENTIVE COMPENSATION PLAN (FORMERLY THE 2006 STOCK INCENTIVEPLAN) AS AMENDED AND RESTATED EFFECTIVE MARCH 18, 2010 articleOne GENERAL PROVISIONS (Filed With SEC on August 19, 2015)

AMERICAN SHARED HOSPITAL SERVICES INCENTIVE COMPENSATION PLAN AS AMENDED AND RESTATED EFFECTIVE APRIL 16, 2015 articleOne GENERAL PROVISIONS (Filed With SEC on August 19, 2015)

AMENDED AND RESTATED EQUIPMENT LEASE AGREEMENT (Filed With SEC on August 19, 2015)

ADDENDUM THREE TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on August 19, 2015)

SECOND AMENDMENT TO PURCHASED SERVICESAGREEMENT (Filed With SEC on April 1, 2015)

THIRD AMENDMENT TO LEASE AGREEMENT FORA GAMMA KNIFE UNIT (Filed With SEC on April 1, 2015)

LEKSELL GAMMA KNIFE PERFEXION PURCHASED SERVICES AGREEMENT (Filed With SEC on April 1, 2015)

AMERICAN SHARED HOSPITAL SERVICES WARRANT AMENDMENT AGREEMENT (Filed With SEC on December 11, 2014)

THIRD AMENDMENT TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on November 14, 2014)

AMERICAN SHARED HOSPITAL SERVICES NOTE AND WARRANT PURCHASE AGREEMENT (Filed With SEC on October 24, 2014)

americanshared hospital services COMMONSTOCK PURCHASE AGREEMENT (Filed With SEC on October 24, 2014)

LOAN AGREEMENT (Filed With SEC on August 14, 2014)

AMENDMENT NO. 1 TO LOAN AGREEMENT (Filed With SEC on August 14, 2014)

AMENDMENT NO. 2 TO LOAN AGREEMENT (Filed With SEC on August 14, 2014)

WAIVER AND AMENDMENT NO. 3 TO LOAN AGREEMENT (Filed With SEC on August 14, 2014)

SECOND AMENDMENT TO PURCHASED SERVICESAGREEMENT (Filed With SEC on August 14, 2014)

americanshared hospital services COMMONSTOCK PURCHASE AGREEMENT (Filed With SEC on June 13, 2014)

LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (PERFEXION UPGRADE) (Filed With SEC on March 31, 2014)

ADDENDUM FIVE TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on November 14, 2013)

SECOND AMENDMENT TO LEASE AGREEMENT FORA GAMMA KNIFE UNIT (Filed With SEC on August 14, 2013)

ADDENDUM TWO TO LEASE AGREEMENT FOR A GAMMA KNIFEUNIT (Filed With SEC on August 14, 2013)

AMENDMENT TO EQUIPMENT LEASE AGREEMENT (PERFEXION UPGRADE) (Filed With SEC on August 14, 2013)

LEKSELL GAMMA KNIFE PERFEXION PURCHASED SERVICES AGREEMENT (Filed With SEC on May 15, 2013)

ADDENDUM ONE TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on August 14, 2012)

EQUIPMENT REVENUE SHARING AGREEMENT (Filed With SEC on August 14, 2012)

LEKSELL GAMMAKNIFE PERFEXION PURCHASEDSERVICES AGREEMENT (Filed With SEC on March 30, 2012)

1st AMENDMENT TO THE LEKSELLGAMMA KNIFE PERFEXION PURCHASED SERVICES AGREEMENT (Filed With SEC on March 30, 2012)

FIRST AMENDMENT TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on August 15, 2011)

Purchase and License Agreement (Filed With SEC on August 15, 2011)

ASSIGNMENT AGREEMENT (Filed With SEC on August 15, 2011)

AMENDMENT TO EQUIPMENT LEASE AGREEMENT (PERFEXION UPGRADE) (Filed With SEC on August 15, 2011)

ASSIGNMENT AND ASSUMPTION OF PURCHASE AND LICENSE AGREEMENT (Filed With SEC on August 15, 2011)

EQUIPMENT LEASE AGREEMENT (Filed With SEC on May 16, 2011)

SECOND AMENDMENTTO LEASE AGREEMENT FOR A GAMMAKNIFE UNIT (PERFEXIONUPGRADE) (Filed With SEC on November 15, 2010)

SECOND AMENDMENTTO LEASE AGREEMENT FOR A GAMMAKNIFE UNIT (PERFEXIONUPGRADE) (Filed With SEC on August 16, 2010)

Exhibit10.23c AMENDMENTTHREE TO EQUIPMENT LEASE AGREEMENT (Filed With SEC on August 16, 2010)

ADDENDUMTHREE (Filed With SEC on August 16, 2010)

ADDENDUMFOUR TOLEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on August 16, 2010)

Current assets (Filed With SEC on November 16, 2009)

Current assets (Filed With SEC on August 14, 2009)

EXHIBIT 10.30A (Filed With SEC on May 14, 2008)

EXHIBIT 10.30B (Filed With SEC on May 14, 2008)

Current assets (Filed With SEC on May 14, 2008)

EXHIBIT 10.23b (Filed With SEC on March 31, 2008)

EXHIBIT 10.19B (Filed With SEC on November 14, 2007)

ADDENDUM (Filed With SEC on August 14, 2007)

AMENDMENT NUMBER FIVE (Filed With SEC on August 14, 2007)

ADDENDUM THREE (Filed With SEC on August 14, 2007)

AGREEMENT TO PURCHASE GAMMA KNIFE PERFEXION UNIT (Filed With SEC on August 14, 2007)

ADDENDUM TWO TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on May 15, 2007)

EXHIBIT 10.45A (Filed With SEC on April 2, 2007)

EXHIBIT 31(a) (Filed With SEC on April 2, 2007)

AMERICAN SHARED HOSPITAL SERVICES (Filed With SEC on July 6, 2006)

AMERICAN SHARED HOSPITAL SERVICES LONG-TERM INCENTIVE COMPENSATION PLAN ARTICLE I NAME AND PURPOSE (Filed With SEC on July 6, 2006)

EXHIBIT 10.19A (Filed With SEC on May 15, 2006)

EXHIBIT 10.23A (Filed With SEC on March 31, 2006)

EXHIBIT 10.50A (Filed With SEC on March 31, 2006)

ADDENDUM TO LEASE AGREEMENT FOR A GAMMA KNIFE UNIT (Filed With SEC on November 14, 2005)

EQUIPMENT LEASE AGREEMENT (Filed With SEC on November 14, 2005)

Current assets (Filed With SEC on August 12, 2005)

EXHIBIT 10.18A (Filed With SEC on May 13, 2005)

Current assets (Filed With SEC on November 12, 2004)

Current assets (Filed With SEC on November 14, 2003)

Current assets (Filed With SEC on August 13, 2003)

Current assets (Filed With SEC on May 15, 2003)

Current assets (Filed With SEC on November 14, 2002)

Current assets (Filed With SEC on August 12, 2002)

Lease Agreement for a Gamma Knife Unit 11/01/1999 (Filed With SEC on August 10, 2001)

Addendum to 11/01/99 Gamma Knife Lease Agreement (Filed With SEC on August 10, 2001)

Lease Agreement for a Gamma Knife Unit 02/18/2000 (Filed With SEC on August 10, 2001)