Seanergy Maritime Holdings Corp. Reports Additional Management Share Purchase

ATHENS, Greece, June 30, 2010 - Seanergy Maritime Holdings Corp. (the "Company") (NASDAQ:
SHIP; SHIP.W) announced today that the Company's Chief Executive Officer, Mr.
Dale Ploughman, purchased today 50,000 shares of Seanergy's common stock at a
purchase price of $1.25 per share. This purchase has brought the number of
shares purchased by Mr. Ploughman to a total of 100,000 shares. As previously
announced, Mr. Ploughman had purchased on June 14, 2010, 50,000 shares at a
purchase price of $1.2399 per share. All transactions were completed on the
open market.

About Seanergy Maritime Holdings Corp.

Seanergy Maritime Holdings Corp., the successor to Seanergy
Maritime Corp., is a Marshall Islands corporation with its executive offices
in Athens, Greece. The Company is engaged in the transportation of dry bulk
cargoes through the ownership and operation of dry bulk carriers.

The Company's initial fleet comprised two Panamax, two
Supramax, one Handymax and one Handysize dry bulk carriers that Seanergy
purchased and took delivery of in the third and fourth quarters of 2008 from
companies associated with members of the Restis family. In August 2009, the
Company acquired a controlling interest in Bulk Energy Transport (Holdings)
Limited, which owns four Capesize and one Panamax dry bulk carriers. In May
2010, the Company acquired a controlling interest in Maritime Capital
Shipping Limited, which owns nine Handysize dry bulk carriers.

The Company's current controlled fleet includes 20 drybulk
carriers (four Capesize, three Panamax, two Supramax and one Handymax and 10
Handysize vessels) with a total carrying capacity of approximately 1,292,544
dwt and an average fleet age of 12.7 years.

The Company's common stock and warrants trade on the NASDAQ
Global Market under the symbols "SHIP" and "SHIP.W", respectively.

Forward-Looking Statements

This press release contains forward-looking statements (as
defined in Section 27A of the Securities Act of 1933, as amended, and Section
21E of the Securities Exchange Act of 1934, as amended) concerning future
events and the Company's growth strategy and measures to implement such
strategy. Words such as "expects," "intends," "plans," "believes,"
"anticipates," "hopes," "estimates," and variations of such words and similar
expressions are intended to identify forward-looking statements. Although the
Company believes that such expectations will prove to have been correct,
these statements involve known and unknown risks and are based upon a number
of assumptions and estimates, which are inherently subject to significant
uncertainties and contingencies, many of which are beyond the control of the
Company. Actual results may differ materially from those expressed or implied
by such forward-looking statements. Factors that could cause actual results
to differ materially include, but are not limited to, the scope and timing of
Securities and Exchange Commission ("SEC") and other regulatory agency
review, competitive factors in the market in which the Company operates;
risks associated with operations outside the United States; and other factors
listed from time to time in the Company's filings with the SEC. The Company's
filings can be obtained free of charge on the SEC's website at
www.sec.gov. The Company expressly disclaims any obligations or
undertaking to release publicly any updates or revisions to any
forward-looking statements contained herein to reflect any change in the
Company's expectations with respect thereto or any change in events,
conditions or circumstances on which any statement is based.

    For further information please contact:

    Seanergy Maritime Holdings Corp.
    Dale Ploughman - Chief Executive Officer
    Christina Anagnostara - Chief Financial Officer
    Tel: +30-210-9638461
    E-mail: ir@seanergymaritime.com

    Investor Relations / Media
    Capital Link, Inc.
    Paul Lampoutis
    230 Park Avenue Suite 1536
    New York, NY 10169
    Tel: +1(212)661-7566
    E-mail: seanergy@capitallink.com

For further information please contact: Seanergy Maritime Holdings Corp., Dale Ploughman - Chief Executive Officer, Christina Anagnostara - Chief Financial Officer, Tel: +30-210-9638461, E-mail: ir at seanergymaritime.com; Investor Relations / Media: Capital Link, Inc., Paul Lampoutis, 230 Park Avenue Suite 1536, New York, NY 10169, Tel: +1(212)661-7566, E-mail: seanergy at capitallink.com