Exhibit 99.4
Offer To Exchange Each
Outstanding Share of Common Stock
(Including the Associated Preferred Stock Purchase Rights)
of
MIDWEST AIR GROUP,
INC.
for $13.25 consisting
of
$6.6250 in Cash
and
0.5884 of a Share of AirTran
Holdings, Inc. Common Stock
by
Galena Acquisition Corp., a
wholly owned subsidiary of
AIRTRAN HOLDINGS,
INC.
Pursuant to the Prospectus dated
January 11, 2007
THE OFFER AND WITHDRAWAL RIGHTS
EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON THURSDAY,
FEBRUARY 8, 2007 (THE “EXPIRATION DATE”), UNLESS THE
OFFER IS EXTENDED. SECURITIES TENDERED PURSUANT TO THE OFFER MAY BE
WITHDRAWN AT ANY TIME PRIOR TO THE EXPIRATION DATE, BUT NOT DURING
ANY SUBSEQUENT OFFERING PERIOD.
January 11, 2007
To Brokers, Dealers, Commercial
Banks,
Trust Companies and Other Nominees:
We have been engaged by AirTran
Holdings, Inc., a Nevada corporation (“AirTran”), to
act as Dealer Managers in connection with offer by Galena
Acquisition Corp. (“Galena”), a Delaware corporation
and wholly owned subsidiary of AirTran to exchange $13.25 in value,
consisting of $6.6250 in cash, without interest, and 0.5884 of a
share of AirTran Common Stock, par value $0.001 per share (the
“AirTran Shares”), for each outstanding share of common
stock, together with the Series A Junior Participated Preferred
Stock Purchase Rights (the “Midwest Shares”), of
Midwest Air Group, Inc., a Wisconsin corporation
(“Midwest”), upon the terms and subject to the
conditions set forth in AirTran’s Prospectus, dated January
11, 2007 (the “Prospectus”), and the related Letter of
Transmittal (which, together, as amended, supplemented or otherwise
modified from time to time, constitute the “Offer”). We
are asking you to furnish copies of the enclosed materials to your
clients for whom you hold Midwest Shares whether the shares are
registered in your name or the name of your nominee.
As discussed in the Prospectus,
Galena is not conducting the Offer in any jurisdiction where the
Offer would be legal under the laws of such
jurisdiction.
No broker, dealer, bank, trust
company or fiduciary shall be deemed to be the agent of Galena,
AirTran, the Exchange Agent, the Dealer Managers or the Information
Agent for purposes of the Offer.
The Offer is conditioned upon, among
other things, the following:
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the
“minimum tender condition”—there shall have been
validly tendered and not properly withdrawn prior to the Expiration
Date, that number of Midwest Shares representing, together with the
shares owned by AirTran, Galena and AirTran’s other
affiliates, at least a majority of the total voting power of all of
the outstanding securities of Midwest entitled to vote generally in
the election of directors or in a merger, calculated on a fully
diluted basis, including, without limitation, all shares of Midwest
common stock issuable upon the exercise of any options, warrants or
other rights and upon the conversion of any Midwest securities,
including, without limitation, the Midwest notes as defined below,
but excluding the rights issued pursuant to the Midwest rights
agreement, in each case, immediately prior to the Expiration
Date;
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the
“rights redemption condition”—AirTran must be
satisfied, in its sole discretion, that the board of directors of
Midwest has redeemed the Series A Junior Participating Preferred
Stock Purchase Rights issued pursuant to the rights agreement dated
February 15, 2006 between Midwest Air Group, Inc. and American
Stock Transfer & Trust Company, or that such rights have
been invalidated or are otherwise inapplicable to the Offer and the
second-step merger and that none of the Series A Junior
Participating Preferred Stock is outstanding;
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the
“impairment condition”—Midwest shall not have
entered into or effectuated any agreement or transaction with any
person or entity contemplating a fleet expansion or a merger or
acquis
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