SYNTEL INC

During the three and six months ended June 30, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

The Company’s largest customer in 2017, 2016 and 2015 was American Express, which accounted for revenues in excess of 10% of total consolidated revenues.

During the three months ended September 30, 2017, State Street Bank, American Express Corp. and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and six months ended June 30, 2017, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2017, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and nine months ended September 30, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and six months ended June 30, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and nine months ended September 30, 2015, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

The Company’s largest customer in 2016, 2015 and 2014 was American Express, which accounted for revenues in excess of 10% of total consolidated revenues.

During the three and six months ended June 30, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

The Company’s third largest customer, Federal Express Corporation, had revenues in excess of 10% of total consolidated revenues for the year ended 2017, 2016 and 2015.

During the three months ended September 30, 2017, State Street Bank, American Express Corp. and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and six months ended June 30, 2017, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2017, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and nine months ended September 30, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and six months ended June 30, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2016, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three and nine months ended September 30, 2015, American Express Corp., State Street Bank and Federal Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

The Company’s third largest customer, Federal Express Corporation, had revenues in excess of 10% of total consolidated revenues for the year ended 2016, 2015 and 2014.

During the three and six months ended June 30, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

During the three months ended March 31, 2018, State Street Bank, Federal Express Corp. and American Express Corp. each contributed revenues in excess of 10% of total consolidated revenues.

Sales of KPO services only to State Street Bank and Trust Company and its affiliate represented approximately 10%, 11% and 12% of the Company’s total revenues for the years ended December 31, 2017, 2016 and 2015, respectively.

Revenues from State Street Bank, American Express Corp., and Federal Express Corp. were $35.1 million, $33.5 million and $33.1 million, respectively, during the three months ended September 30, 2017, contributing approximately 15.2%, 14.5% and 14.3%, respectively of total consolidated revenues.

Revenues from State Street Bank, Federal Express Corp. and American Express Corp. were $39.4 million, $38.1 million and $31.9 million, respectively, during the three months ended June 30, 2018, contributing approximately 15.8%, 15.3% and 12.8%, respectively of total consolidated revenues.

Revenues from State Street Bank, Federal Express Corp. and American Express Corp. were $38.7 million, $37.3 million and $30.5 million, respectively, during the three months ended March 31, 2018, contributing approximately 15.8%, 15.2% and 12.4%, respectively of total consolidated revenues.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $37.6 million, $34.1 million and $31.6 million, respectively, during the three months ended June 30, 2017, contributing approximately 16.6%, 15.0% and 13.9%, respectively of total consolidated revenues.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $42.2 million, $33.9 million and $30.1 million, respectively, during the three months ended March 31, 2017, contributing approximately 18.7%, 15.0% and 13.3%, respectively of total consolidated revenues.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $50.9 million, $32.8 million and $30.2 million, respectively, during the three months ended September 30, 2016, contributing approximately 21.1%, 13.6% and 12.5%, respectively of total consolidated revenues.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $53.7 million, $33.5 million and $30.5 million, respectively, during the three months ended June 30, 2016, contributing approximately 21.8%, 13.6% and 12.4%, respectively of total consolidated revenues.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $55.3 million, $33.9 million and $28.8 million, respectively, during the three months ended March 31, 2016, contributing approximately 22.9%, 14.0% and 11.9%, respectively of total consolidated revenues.

Sales of KPO services only to State Street Bank and Trust Company and its affiliate represented approximately 11%, 12% and 13% of the Company’s total revenues for the years ended December 31, 2016, 2015 and 2014, respectively.

Revenues from American Express Corp., State Street Bank and Federal Express Corp. were $53.7 million, $38.1 million and $30.4 million, respectively, during the three months ended September 30, 2015, contributing approximately 21.2%, 15.0% and 12.0%, respectively of total consolidated revenues.

The Company’s second-largest customer, State Street Bank, contributed approximately 15%, 14% and 16% of total consolidated revenues for the years ended December 31, 2015, 2014 and 2013, respectively.