Authentidate Holding Corp. Announces Conversion of Series C Preferred Stock Into Common Stock

Authentidate Holding Corp. Announces Conversion of Series C Preferred Stock
Into Common Stock

BERKELEY HEIGHTS, N.J., April 5, 2013 (GLOBE NEWSWIRE) -- Authentidate Holding
Corp. (Nasdaq:ADAT), a provider of secure web-based software applications and
telehealth products and services for healthcare organizations, today announced
that at the company's reconvened Special Meeting of Stockholders held on April
5, 2013, its stockholders approved the automatic conversion of the company's
outstanding shares of Series C 15% Convertible Redeemable Preferred Stock (the
"Series C Preferred Stock"). The Series C Preferred Stock converted into an
aggregate of 3,551,541 shares of common stock, including 1,051,541 shares of
common stock issued in lieu of accrued but unpaid dividends on the Series C
Preferred Stock. The shares of common stock issued upon conversion are subject
to a six month restriction on transferability as described in the company's
supplement to its proxy statement for the Special Meeting dated March 22,

Ben Benjamin, Chief Executive Officer of Authentidate, stated, "We appreciate
the continued support of our stockholders in voting to convert these
securities into common stock. The conversion of these preferred securities
strengthens our balance sheet, allows us to conserve resources and helps us to
move forward aggressively with our growth plans."

About Authentidate Holding Corp.

Authentidate Holding Corp. is a provider of secure web-based software
applications and telehealth products and services that enable healthcare
organizations to coordinate care for patients and enhance related
administrative and clinical workflows. Authentidate's products and services
enable healthcare organizations to increase revenues, reduce costs and enhance
patient care by eliminating paper and manual work steps from clinical and
administrative processes. Authentidate's telehealth solutions combine patient
vital signs monitoring with a web application that streamlines patient care
management. Delivered as Software as a Service (SaaS), customers only require
an Internet connection and web browser to access our web-based applications
thereby utilizing previous investments in systems and technology. The
company's healthcare customers and users include leading homecare companies,
health systems, physician groups and governmental entities. These
organizations utilize the company's products and services to coordinate care
for patients outside of acute-care.

For more information, visit the company's website at

This press release contains forward-looking statements within the meaning of
section 27A of the Securities Act of 1933 and section 21E of the Securities
Act of 1934. When used in this release, the words "believe," "anticipate,"
"think," "intend," "plan," "will be," "expect," and similar expressions
identify such forward-looking statements. Such statements regarding future
events and/or the future financial performance of the company are subject to
certain risks and uncertainties, which could cause actual events or the actual
future results of the company to differ materially from any forward-looking
statement. Such risks and uncertainties include, among other things, the
availability of any needed financing, the company's ability to implement its
business plan for various applications of its technologies, the impact of
competition, the management of growth, and the other risks and uncertainties
that may be detailed from time to time in the company's reports filed with the
Securities and Exchange Commission. In light of the significant risks and
uncertainties inherent in the forward-looking statements included herein, the
inclusion of such statements should not be regarded as a representation by the
company or any other person that the objectives and plans of the company will
be achieved.

Authentidate and Inscrybe are registered trademarks of Authentidate Holding
Corp. All other trade names are the property of their respective owners.

CONTACT: Investor Contacts:
         Robert Schatz
         Wolfe Axelrod Weinberger Assoc. LLC
         (212) 370-4500; (212) 370-4505 fax
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