X0306 4 2016-03-31 0 0000885074 AUTHENTIDATE HOLDING CORP ADAT 0001663003 Chagani Mustafa AUTHENTIDATE HOLDING CORP. 2225 CENTENNIAL DRIVE GAINESVILLE GA 30504 1 0 0 0 Director Stock Options 3.05 2016-06-30 4 A 0 4365 0 A 2019-01-21 2026-06-30 Common Stock 4365 4365 D Director Stock Options 2.93 2016-09-01 4 A 0 1250 0 A 2019-01-21 2026-09-01 Common Stock 1250 1250 D Director Stock Options 3.58 2016-09-30 4 A 0 5090 0 A 2019-01-21 2026-09-30 Common Stock 5090 5090 D Director Stock Options 3.50 2016-12-31 4 A 0 4514 0 A 2019-01-21 2026-12-31 Common Stock 4514 4514 D Represents issuance in lieu of cash director fees pursuant to the Company's 2011 Omnibus Equity Incentive Plan attributable to the reporting person's board service for the fiscal quarter ended June 30, 2016. Represents issuance of annual award under the Company's 2011 Omnibus Equity Incentive Plan pursuant to the Company's director compensation policy. Represents issuance in lieu of cash director fees pursuant to the Company's 2011 Omnibus Equity Incentive Plan attributable to the reporting person's board service for the fiscal quarter ended September 30, 2016. Represents issuance in lieu of cash director fees pursuant to the Company's 2011 Omnibus Equity Incentive Plan attributable to the reporting person's board service for the fiscal quarter ended December 31, 2016. Physical delivery of the option awards set forth in Table II of this Form 4 was not made to the reporting person until March 16, 2017. /s/ Mustafa Chagani 2017-03-20