Exhibit 99

PRESS RELEASE

FOR IMMEDIATE RELEASE

Contact: Marty Jimmerson
RigNet, Inc.
+1 (281) 674-0699
investor.relations@rig.net

RigNet Announces Record Third Quarter 2011 Earnings Results

HOUSTON, TX — November 9, 2011 —

•

Reported record quarterly revenue of $28.9 million, a 19.3% increase over the same quarter last year and a 10.3% increase over the previous quarter

•

Reported record quarterly Adjusted EBITDA of $9.4 million, a 22.6% increase over the same quarter last year and a 14.0% increase from the previous quarter. Adjusted EBITDA margin expanded to 32.7% in the quarter as compared to 31.8% in the prior year quarter and 31.6% in the previous quarter

•

Reported net income attributable to common stockholders of $5.5 million, or $0.32 per diluted share, an increase of $0.42 per diluted share over the same quarter last year and $0.19 per diluted share over the previous quarter

•

Reported capital expenditures of $4.5 million, a 83.3% increase over the same quarter last year and a 22.8% decrease over the previous quarter

For the three months ended September 30, 2011, RigNet, Inc. (“RigNet” or the “Company”) (NASDAQ: RNET), today announced revenue of $28.9 million, Adjusted EBITDA of $9.4 million, or 32.7% of revenue, net income attributable to common stockholders of $5.5 million, or $0.32 per diluted share, and capital expenditures of $4.5 million. For the three months ended September 30, 2010, revenue was $24.2 million, Adjusted EBITDA was $7.7 million, or 31.8% of revenue, net loss attributable to common stockholders was $0.6 million, or $0.10 loss per diluted share, and capital expenditures were $2.5 million. For the sequential comparison of the three months ended June 30, 2011, revenue was $26.2 million, Adjusted EBITDA was $8.3 million, or 31.6% of revenue, net income attributable to common stockholders was $2.2 million, or $0.13 per diluted share, and capital expenditures were $5.7 million.

Revenue increased by $4.7 million, or 19.3%, for the three months ended September 30, 2011 as compared to the same period of 2010 due primarily to increasing demands for our services in our offshore operations and continued growth in a robust U.S. land drilling market. Adjusted EBITDA increased by $1.7 million, or 22.6%, over the prior year period primarily due to the increased revenue described above partially offset by additional costs related to operating as a publicly-traded company. Adjusted EBITDA margin expanded to 32.7% from 31.8% in the prior year quarter. Net income attributable to common stockholders increased by $6.0 million, or $0.42 per diluted share, for the three months ended September 30, 2011 as compared to the same period of 2010. This increase in net income is due to the operational improvements discussed above, as well as an effective tax rate of (5.8)% in the quarter compared to 84.7% in the same period of 2010.

Revenue increased by $2.7 million, or 10.3%, for the three months ended September 30, 2011 as compared to the previous quarter due primarily to increased demand for our services in our offshore operations and continued robust activity in the U.S. land drilling. Adjusted EBITDA increased by $1.1 million, or 14.0%, over the previous quarter primarily due to increased revenue. Adjusted EBITDA margin expanded to 32.7% in the current quarter over 31.6% in the previous quarter. Net income attributable to common stockholders increased by $3.3 million, or $0.19 per diluted share, for the three months ended September 30, 2011 as compared to the prior quarter due to the operational improvements discussed above as well as an effective tax rate of (5.8)% in the quarter compared to 46.9% in the prior quarter.

1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net

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Mark B. Slaughter, Chief Executive Officer and President, commented, “I am pleased with our record financial performance in the third quarter, which reflects positive contributions from both our offshore and onshore operations around the world. This quarter’s improved results were led primarily by revenue growth from existing remote sites as we provided bandwidth upgrades and additional value-added solutions on drilling rigs for several of our larger clients. We also saw additional global call-out work from a major oilfield services company that has subsequently entered into a global purchasing contract with RigNet. Our strategic growth initiatives, particularly international land drilling, showed solid traction in the quarter. We were also encouraged by the progress we are making in Brazil’s dynamic deepwater market as we continued our investment in people and infrastructure in the quarter in anticipation of additional work. Despite some overall global economic uncertainty, customer demand remained strong for our services during the quarter, which gives us the confidence to continue pursuit of our growth strategies as we move forward.”

A conference call for investors will be held at 11:00 a.m. Eastern Time (10:00 a.m. Central Time) tomorrow to discuss RigNet’s 2011 third quarter results. The call may be accessed live over the telephone by dialing (877) 845-0777, or, for international callers, +1 (760) 298-5090. Interested parties may also listen to a simultaneous webcast of the conference call by logging onto RigNet’s website at www.rig.net in the Investors — Webcasts and Presentations section. A replay of the conference call webcast will also be available on our website for approximately thirty days following the call.

Non-GAAP Financial Measures

This press release contains the following non-GAAP measures: Gross Profit and Adjusted EBITDA. Gross Profit and Adjusted EBITDA are financial measures that are not calculated in accordance with generally accepted accounting principles, or GAAP. We refer you to the Company’s most recent 10-K filing for the year ended December 31, 2010 for a more detailed discussion of the uses and limitations of our non-GAAP financial measures.

We define Gross Profit as revenue less cost of revenue. This measure is used to evaluate operating margins and the effectiveness of cost management.

We define Adjusted EBITDA as net income (loss) plus interest expense, income tax expense (benefit), depreciation and amortization, impairment of goodwill, (gain) loss on retirement of property and equipment, change in fair value of derivatives, stock-based compensation and IPO costs and related bonuses. Adjusted EBITDA should not be considered as an alternative to net income (loss), operating income (loss) or any other measure of financial performance calculated and presented in accordance with GAAP.

About RigNet

RigNet (NASDAQ: RNET) is a leading global provider of managed communications, networks and collaborative applications dedicated to the oil and gas industry. RigNet provides solutions ranging from fully-managed voice and data networks to more advanced applications that include video conferencing and real-time data services to remote sites in over 30 countries on six continents, effectively spanning the drilling and production industry. RigNet is based in Houston, Texas. For more information, please visit www.rig.net.

1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net

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Forward Looking Statements

This press release includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995 — that is, statements related to the future, not past, events. Forward-looking statements are based on the current expectations and include any statement that does not directly relate to a current or historical fact. In this context, forward-looking statements often address our expected future business and financial performance, and often contain words such as “anticipate,” “believe,” “intend,” “expect,” “plan,” “will” or other similar words. These forward-looking statements involve certain risks and uncertainties that ultimately may not prove to be accurate. Actual results and future events could differ materially from those anticipated in such statements. For further discussion of risks and uncertainties, individuals should refer to RigNet’s SEC filings. RigNet undertakes no obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after this press release. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. All forward-looking statements are qualified in their entirety by this cautionary statement.

		Three Months								Nine Months
		Ended September 30,								Ended September 30,
		2011				2010				2011				2010
		(in thousands)
Unaudited Consolidated Statements of Income (Loss) Data:
Revenue		$	28,905			$	24,234			$	79,569			$	68,604
Expenses:
Cost of revenue			12,964				10,516				35,536				31,242
Depreciation and amortization			3,717				3,561				10,829				11,349
Selling and marketing			584				682				1,637				1,576
General and administrative			6,557				5,587				19,057				15,858
Total expenses			23,822				20,346				67,059				60,025
Operating income			5,083				3,888				12,510				8,579
Other income (expense), net			93				(745	)			(667	)			(14,203	)
Income (loss) before income taxes			5,176				3,143				11,843				(5,624	)
Income tax benefit (expense)			299				(2,661	)			(4,144	)			(4,953	)
Net income (loss)		$	5,475			$	482			$	7,699			$	(10,577	)
Income (Loss) Per Share — Basic and Diluted
Net loss attributable to RigNet, Inc. common stockholders		$	5,451			$	(552	)		$	7,546			$	(13,293	)
Net income (loss) per share attributable to RigNet, Inc.common stockholders, basic		$	0.35			$	(0.10	)		$	0.49			$	(2.50	)
Net income (loss) per share attributable to RigNet, Inc. common stockholders, diluted		$	0.32			$	(0.10	)		$	0.45			$	(2.50	)
Weighted average shares outstanding, basic			15,443				5,319				15,369				5,318
Weighted average shares outstanding, diluted			16,840				5,319				16,792				5,318
Unaudited Non-GAAP Data:
Gross Profit		$	15,941			$	13,718			$	44,033			$	37,362
Gross Profit margin			55.1	%			56.6	%			55.3	%			54.5	%
Adjusted EBITDA		$	9,448			$	7,706			$	24,332			$	21,311
Adjusted EBITDA margin			32.7	%			31.8	%			30.6	%			31.1	%

1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net

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		Three Months								Nine Months
		Ended September 30,								Ended September 30,
		2011				2010				2011				2010
		(in thousands)
Reconciliation of Net Income (Loss) to Adjusted EBITDA:
Net income (loss)		$	5,475			$	482			$	7,699			$	(10,577	)
Interest expense			235				412				1,030				1,174
Depreciation and amortization			3,717				3,561				10,829				11,349
(Gain) loss on retirement of property and equipment			(1	)			—				(111	)			320
Change in fair value of preferred stock derivatives			—				(62	)			—				12,384
Stock-based compensation			321				116				741				334
Initial public offering costs			—				536				—				1,374
Income tax (benefit) expense			(299	)			2,661				4,144				4,953
Adjusted EBITDA (non-GAAP measure)		$	9,448			$	7,706			$	24,332			$	21,311

1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net

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		September 30,				December 31,
		2011				2010
		(in thousands)
Unaudited Consolidated Balance Sheet Data:
Cash and cash equivalents		$	58,496			$	50,435
Restricted cash — current portion			—				2,500
Restricted cash — long-term portion			—				7,500
Total assets			137,216				129,785
Current maturities of long-term debt			8,729				8,655
Long-term debt			16,967				23,484

		Nine Months Ended September 30,
		2011				2010
		(in thousands)
Unaudited Consolidated Statements of Cash Flows Data:
Cash and cash equivalents, January 1,		$	50,435			$	11,379
Net cash provided by operating activities			15,031				14,812
Net cash used by investing activities			(4,735	)			(9,586	)
Net cash used by financing activities			(2,124	)			(1,466	)
Changes in foreign currency translation			(111	)			(625	)
Cash and cash equivalents, September 30,		$	58,496			$	14,514

		4th Quarter				1st Quarter				2nd Quarter				3rd Quarter
		2010				2011				2011				2011
Selected Operational Data:
Eastern Hemisphere
Drilling rigs (1)			141				143				141				138
Other sites (2)			120				131				160				172
Western Hemisphere
Drilling rigs (1)			85				80				78				79
Other sites (2)			155				159				138				140
U.S. Land
Drilling rigs			334				323				331				330
Other sites (2)			86				82				106				132

1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net

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		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2011				2010				2011				2010
		(in thousands)
Eastern Hemisphere:
Revenue		$	17,856			$	15,572			$	49,476			$	45,979
Cost of revenue			6,499				5,696				18,378				17,986
Gross Profit (non-GAAP measure)			11,357				9,876				31,098				27,993
Gross Profit margin			63.6	%			63.4	%			62.9	%			60.9	%
Depreciation and amortization			1,997				1,895				6,049				6,022
Selling, general and administrative			2,120				2,091				6,288				5,520
Operating income		$	7,240			$	5,890			$	18,761			$	16,451
Adjusted EBITDA (non-GAAP measure)		$	9,604			$	7,255			$	25,071			$	22,117
Adjusted EBITDA margin			53.8	%			46.6	%			50.7	%			48.1	%
Western Hemisphere:
Revenue		$	5,859			$	5,332			$	15,794			$	13,980
Cost of revenue			2,630				2,209				7,526				6,556
Gross Profit (non-GAAP measure)			3,229				3,123				8,268				7,424
Gross Profit margin			55.1	%			58.6	%			52.3	%			53.1	%
Depreciation and amortization			1,297				1,061				3,554				2,861
Selling, general and administrative			985				589				2,501				1,792
Operating income (loss)		$	947			$	1,473			$	2,213			$	2,771
Adjusted EBITDA (non-GAAP measure)		$	2,218			$	2,538			$	5,786			$	5,557
Adjusted EBITDA margin			37.9	%			47.6	%			36.6	%			39.7	%
U.S. Land:
Revenue		$	5,265			$	3,376			$	14,371			$	8,971
Cost of revenue			2,924				1,795				7,568				4,829
Gross Profit (non-GAAP measure)			2,341				1,581				6,803				4,142
Gross Profit margin			44.5	%			46.8	%			47.3	%			46.2	%
Depreciation and amortization			470				709				1,379				2,484
Selling, general and administrative			840				788				2,309				1,910
Operating income (loss)		$	1,031			$	84			$	3,115			$	(252	)
Adjusted EBITDA (non-GAAP measure)		$	1,501			$	791			$	4,494			$	2,230
Adjusted EBITDA margin			28.5	%			23.4	%			31.3	%			24.9	%

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1880 SOUTH DAIRY ASHFORD, SUITE 300 HOUSTON, TEXAS 77077 PHONE 281.674.0100 FAX 281.674.0101 http://www.rig.net