EXHIBIT 99.1

NEWS RELEASE

For further information contact:

Kirk J. Meche

Chief Executive Officer and Interim Chief Financial Officer

(985) 872-2100

FOR IMMEDIATE RELEASE

THURSDAY, APRIL 25, 2013

GULF ISLAND FABRICATION, INC.

REPORTS FIRST QUARTER EARNINGS

Houma, LA – Gulf Island Fabrication, Inc. (NASDAQ: GIFI) today reported net income of $2.8 million ($.19 diluted EPS) on revenue of $150.4 million for its first quarter ended March 31, 2013, compared to net income of $6.8 million ($.47 diluted EPS) on revenue of $113.1 million for the first quarter ended March 31, 2012.

The company had a revenue backlog of $453.2 million and a labor backlog of approximately 3.5 million man-hours at March 31, 2013, compared to a revenue backlog of $537.0 million and a labor backlog of 4.4 million man-hours reported as of December 31, 2012, which included projects totaling $230 million and 2 million man-hours awarded in 2013 through March 13, 2013.

SELECTED BALANCE SHEET INFORMATION

(in thousands)

	March 31, 2013		December 31, 2012
Cash and cash equivalents	$	12,254	$	24,888
Total current assets		229,393		173,604
Property, plant and equipment, at cost,net		227,296		229,216
Total assets		457,364		403,495
Total current liabilities		134,482		92,274
Debt		10,000		0
Shareholders’ equity		274,970		273,500
Total liabilities and shareholders’ equity		457,364		403,495

The management of Gulf Island Fabrication, Inc. will hold a conference call on Friday, April 26, 2013 at 9:00 a.m. Central Time (10:00 a.m. Eastern Time) to discuss the Company’s financial results for the quarter ended March 31, 2013. The call is accessible by webcast (www.gulfisland.com) through CCBN and by dialing 1.888.596.2569. A digital rebroadcast of the call is available two hours after the call and ending May 2, 2013 by dialing 1.888.203.1112, replay passcode: 1457583.

Gulf Island Fabrication, Inc., based in Houma, Louisiana, is a leading fabricator of offshore drilling and production platforms, hull and/or deck sections of floating production platforms and other specialized structures used in the development and production of offshore oil and gas reserves. These structures include jackets and deck sections of fixed production platforms; hull and/or deck sections of floating production platforms (such as tension leg platforms “TLPs”, “SPARs”, “FPSOs”, and “MinDOCs”), piles, wellhead protectors, subsea templates and various production, compressor and utility modules, offshore living quarters, towboats, liftboats, tanks and barges. The Company also provides offshore interconnect pipe hook-up, inshore marine construction, manufacture and repair of pressure vessels, heavy lifts such as ship integration and TLP module integration, loading and offloading of jack-up drilling rigs, semi-submersible drilling rigs, TLPs , SPARs, or other similar cargo, onshore and offshore scaffolding, piping insulation services, and steel warehousing and sales.

GULF ISLAND FABRICATION, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

(in thousands, except per share data)

	Three Months Ended March 31,
	2013			2012
Revenue	$	150,422		$	113,083
Cost of revenue		143,718			100,415
Gross profit		6,704			12,668
General and administrative expenses		2,355			2,612
Operating income		4,349			10,056
Other income (expense):
Interest expense		(64	)		(96	)
Interest income		1			248
Other		—			63
		(63	)		215
Income before income taxes		4,286			10,271
Income taxes		1,499			3,492
Net income	$	2,787		$	6,779
Per share data:
Basic earnings per share—common shareholders	$	0.19		$	0.47
Diluted earnings per share—common shareholders	$	0.19		$	0.47
Weighted-average shares		14,455			14,381
Effect of dilutive securities: employee stock options		6			27
Adjusted weighted-average shares		14,461			14,408
Depreciation and amortization included in expense above	$	6,126		$	5,650
Cash dividend declared per common share	$	0.10		$	0.10