Air Transport Services Group, Inc.

Amazon 33 % 34 % 34 %

Amazon 34 % 33 % 33 % 34 %

Amazon 30 % 34 % 32 % 34 %

Amazon 34 % 35 %

Amazon 33 % 34 % 34 % 34 %

Amazon 34 % 34 % 34 % 34 %

Amazon 35 % 34 %

Amazon 34 % 34 % 35 %

Three Months EndedNine Months EndedSeptember 30,September 30,2022202120222021CustomerPercentage of RevenuePercentage of RevenueDoD31%31%29%26%Amazon 34%33%34%35%DHL 13%12%12%13%

Three Months EndedSix Months EndedJune 30,June 30,2022202120222021CustomerPercentage of RevenuePercentage of RevenueDoD29%25%29%24%Amazon 34%37%34%36%DHL 13%13%12%13%

Three Months EndedMarch 31,20222021CustomerPercentage of RevenueDoD28%22%Amazon 34%35%DHL 11%14%

Amazon 34 % 35 % 30 %

Amazon 33 % 29 % 35 % 29 %

Amazon 37 % 29 % 36 % 29 %

Amazon 35 % 29 %

Department of Defense ("DoD")26%31%34%Amazon 35%30%23%DHL 12%12%14%

Revenues from Amazon comprised approximately 29% and 29% of the Company's consolidated revenues from continuing operations for the three and nine month periods ending September 30, 2020, respectively, compared to 26% and 21% for the corresponding periods of 2019.

Revenues from Amazon comprised approximately 29% and 29% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2020, respectively, compared to 20% and 19% for the corresponding periods of 2019.

Revenues from Amazon comprised approximately 29% and 18% of the Company's consolidated revenues from continuing operations for the three month periods ending March 31, 2020 and 2019, respectively.

Amazon 30 % 23 % 27 %

Revenues from continuing operations performed for Amazon comprised approximately 26% and 21% of the Company's consolidated revenues from continuing operations for the three and nine month periods ending September 30, 2019, respectively, compared to 31% and 29% for the corresponding periods of 2018.

Revenues from continuing operations performed for Amazon comprised approximately 20% and 19% of the Company's consolidated revenues from continuing operations for the three and six month periods ending June 30, 2019, respectively, compared to 29% and 29% for the corresponding periods of 2018.

Revenues from Amazon comprised approximately 23%, 27% and 44% of the Company's consolidated revenues from continuing operations for the years ending December 31, 2019, 2018 and 2017, respectively.

In the nine-month period ended June 30, 2024, one customer, Pilatus accounted for 26% of net sales.In the three-month period ended June 30, 2023, three customers, Pilatus, Air Transport Services Group (“ATSG”) and Textron Aviation, Inc. (“Textron”), accounted for 25%, 24% and 10% of net sales, respectively.

In the six-month period ended Mach 31, 2024, one customer, Pilatus accounted for 29% of net sales.In the three-month period ended March 31, 2023, four customers, Pilatus, Challenge Airlines, Air Transport Services Group and Textron, accounted for 21%, 18%, 16% and 10% of net sales, respectively.

The Company has recorded the excess of funded premiums over estimated claims incurred but not reported of $205,000 and $382,000 as a current asset in the accompanying consolidated balance sheets as of December 31, 2023 and September 30, 2023, respectively.ConcentrationsMajor Customers and ProductsIn the three-month period ended December 31, 2023, one customer, Pilatus Aircraft Ltd (“Pilatus”) accounted for 29% of net sales.In the three-month period ended December 31, 2022, three customers, Pilatus, Air Transport Services Group and Textron Aviation, Inc. (“Textron”) accounted for 38%, 13% and 11% of net sales, respectively.Major SuppliersThe Company buys several of its components from sole source suppliers.

ConcentrationsMajor Customers and ProductsIn the three-month period ended December 31, 2022, three customers, Pilatus Aircraft Ltd (“Pilatus”), Air Transport Services Group, and Textron Aviation, Inc. (“Textron”), accounted for 38%, 13% and 11% of net sales, respectively.In the three-month period ended December 31, 2021, two customers, Air Transport Services Group, and Pilatus, accounted for 25%, and 24% of net sales, respectively.Major SuppliersThe Company buys several of its components from sole source suppliers.

For the three months ended March 31, 2019, four customers, Pilatus, Air Transport Services Group Inc. (“ATSG”), Cargojet Inc., and Dayton T.

For the three months ended December 31, 2018, three customers, Air Transport Services Group, Pilatus, and Deutsche Post DHL Group, accounted for 30%, 21% and 12% of net sales, respectively.