Exhibit 99.1

Investor Relations:
(765) 771-5310

OUR INNOVATION MOVES THE WORLD

FOR IMMEDIATE RELEASE

Wabash National Corporation Announces
Second Quarter and Year-To-Date Results

LAFAYETTE, Ind. — July 30, 2007 — Wabash National Corporation (NYSE: WNC) reported net income of $5.9 million, or $0.18 per diluted share for the second quarter of 2007 on net sales of $294.8 million. For the same quarter last year, the company reported net income of $5.0 million, or $0.15 per diluted share, on revenue of $333.6 million. For the six months ended June 30, 2007, net income totaled $6.9 million, or $0.22 per diluted share on sales of $553.7 million. In the comparable period of 2006, the company reported net income of $9.4 million or $0.29 per diluted share on sales of $595.7 million.

Dick Giromini, president and chief executive officer, stated, “We are pleased with our progress this quarter despite a challenging environment. The performance of our manufacturing organization, complemented by our aggressive strategic sourcing and pricing initiatives, has allowed us to achieve our best gross margin percentage since the first quarter of 2006. While the continued weak freight environment constrained new trailer sales to 12,500 units for the quarter, it represents a 14% increase from the prior quarter.”

“As truck transportation companies continue to face macro-economic and industry related headwinds, we anticipate total new trailer sales for the year to be approximately 48,000 units of which approximately 90% are already booked. We are taking the necessary measures to optimize our business during this soft period, including a hiring freeze, staff cutbacks and spending restrictions. We believe we are well into the trough of the cycle, and expect to see improving order rates in the second half of 2008.”

As of June 30, 2007 the company’s backlog was approximately $515 million.

Headquartered in Lafayette, Ind., Wabash National® Corporation (NYSE: WNC) is one of the leading manufacturers of semi trailers in North America. Established in 1985, the company specializes in the design and production of dry freight vans, refrigerated vans, flatbed trailers, drop deck trailers, and intermodal equipment. Its innovative core products are sold under the DuraPlate®, ArcticLite®, and Eagle® brand names. The company operates two wholly owned subsidiaries: Transcraft Corporation, a manufacturer of flatbed and drop deck trailers; and Wabash National Trailer Centers, a retail distributor of new and used trailers and aftermarket parts throughout the U.S. and Canada.

This press release contains certain forward-looking statements, as defined by the Private Securities Litigation Reform Act of 1995. These forward-looking statements including statements about the company’s expectations for improvement in future results are, however, subject to certain risks and uncertainties that could cause actual results to differ materially from those implied by the forward-looking statements. Without limitation, these risks and uncertainties include increased competition, reliance on certain customers and corporate partnerships, risks of customer pick-up delays, shortages and costs of raw materials, risks in implementing and sustaining improvements in our manufacturing capacity and cost containment, and dependence on industry trends. Readers should review and consider the various disclosures made by the company in this press release and in the company’s reports to its stockholders and periodic reports on Forms 10-K and 10-Q.

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WABASH NATIONAL CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share amounts)
(Unaudited)

	Three Months						Six Months
	Ended June 30,						Ended June 30,
	2007			2006			2007			2006
NET SALES	$	294,849		$	333,572		$	553,703		$	595,691
COST OF SALES		267,017			306,300			505,686			545,628
Gross profit		27,832			27,272			48,017			50,063
GENERAL AND ADMINISTRATIVE EXPENSES		12,439			14,227			25,159			24,930
SELLING EXPENSES		3,963			3,487			8,113			6,795
Income from operations		11,430			9,558			14,745			18,338
OTHER INCOME (EXPENSE)
Interest expense		(1,448	)		(1,523	)		(2,994	)		(3,082	)
Foreign exchange gains and losses, net		362			117			396			—
Other, net		(565	)		185			(506	)		242
Income before income taxes		9,779			8,337			11,641			15,498
INCOME TAX EXPENSE		3,904			3,290			4,770			6,114
Net income	$	5,875		$	5,047		$	6,871		$	9,384
COMMON STOCK DIVIDENDS DECLARED	$	0.045		$	0.045		$	0.09		$	0.09
BASIC NET INCOME PER SHARE	$	0.19		$	0.16		$	0.23		$	0.30
DILUTED NET INCOME PER SHARE	$	0.18		$	0.15		$	0.22		$	0.29
COMPREHENSIVE INCOME
Net income	$	5,875		$	5,047		$	6,871		$	9,384
Foreign currency translation adjustment		206			665			226			757
NET COMPREHENSIVE INCOME	$	6,081		$	5,712		$	7,097		$	10,141

			Retail &
	Manufacturing		Distribution			Eliminations			Total
Three months ended June 30,
2007
Net sales	$	268,652	$	40,555		$	(14,358	)	$	294,849
Income (loss) from operations	$	11,946	$	(290	)	$	(226	)	$	11,430
2006
Net sales	$	291,543	$	48,019		$	(5,990	)	$	333,572
Income from operations	$	7,031	$	724		$	1,803		$	9,558
Six months ended June 30,
2007
Net sales	$	507,157	$	82,855		$	(36,309	)	$	553,703
Income (loss) from operations	$	16,047	$	(638	)	$	(664	)	$	14,745
2006
Net sales	$	533,517	$	93,388		$	(31,214	)	$	595,691
Income (loss) from operations	$	17,624	$	909		$	(195	)	$	18,338

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2007		2006		2007		2006
Basic net income per share:
Net income applicable to common stockholders	$	5,875	$	5,047	$	6,871	$	9,384
Weighted average common shares outstanding		30,233		31,154		30,263		31,134
Basic net income per share	$	0.19	$	0.16	$	0.23	$	0.30
Diluted net income per share:
Net income applicable to common stockholders	$	5,875	$	5,047	$	6,871	$	9,384
After-tax equivalent of interest on convertible notes		741		741		1,482		1,482
Diluted net income applicable to common stockholders	$	6,616	$	5,788	$	8,353	$	10,866
Weighted average common shares outstanding		30,233		31,154		30,263		31,134
Dilutive stock options/shares		306		205		265		210
Convertible notes equivalent shares		6,676		6,597		6,667		6,588
Diluted weighted average common shares outstanding		37,215		37,956		37,195		37,932
Diluted net income per share	$	0.18	$	0.15	$	0.22	$	0.29

WABASH NATIONAL CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS
(Dollars in thousands)

	June 30,		December 31,
	2007		2006
	(Unaudited)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	19,274	$	29,885
Accounts receivable, net		92,018		110,462
Inventories		179,524		133,133
Deferred income taxes		20,788		26,650
Prepaid expenses and other		2,874		4,088
Total current assets		314,478		304,218
PROPERTY, PLANT AND EQUIPMENT, net		126,512		129,325
EQUIPMENT LEASED TO OTHERS, net		1,103		1,302
GOODWILL		66,692		66,692
INTANGIBLE ASSETS		34,266		35,998
OTHER ASSETS		18,684		18,948
	$	561,735	$	556,483
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable	$	105,003	$	90,632
Other accrued liabilities		51,139		58,706
Total current liabilities		156,142		149,338
LONG-TERM DEBT		125,000		125,000
DEFERRED INCOME TAXES		172		1,556
OTHER NONCURRENT LIABILITIES AND CONTINGENCIES		3,209		2,634
STOCKHOLDERS’ EQUITY		277,212		277,955
	$	561,735	$	556,483

WABASH NATIONAL CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(Unaudited)

	Six Months
	Ended June 30,
	2007			2006
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	6,871		$	9,384
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		9,623			10,599
Net gain on the sale of assets		(81	)		(15	)
Deferred income taxes		4,478			5,319
Excess tax benefits from stock-based compensation		(33	)		(328	)
Stock-based compensation		1,967			1,739
Change in operating assets and liabilities:
Accounts receivable		18,444			9,053
Finance contracts		7			1,365
Inventories		(46,378	)		(67,237	)
Prepaid expenses and other		1,207			1,628
Accounts payable and accrued liabilities		12,190			42,546
Other, net		386			1,372
Net cash provided by operating activities		8,681			15,425
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(4,017	)		(10,324	)
Acquisition, net of cash acquired		(4,500	)		(69,307	)
Proceeds from the sale of property, plant and equipment		95			434
Net cash used in investing activities		(8,422	)		(79,197	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options		74			678
Excess tax benefits from stock-based compensation		33			328
Borrowings under revolving credit facilities		86,619			73,606
Payments under revolving credit facilities		(86,619	)		(57,683	)
Payments under long-term debt obligations		—			(500	)
Repurchases of common stock		(8,210	)		—
Common stock dividends paid		(2,767	)		(2,810	)
Net cash (used in) provided by financing activities		(10,870	)		13,619
NET DECREASE IN CASH AND CASH EQUIVALENTS		(10,611	)		(50,153	)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD		29,885			67,437
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	19,274		$	17,284