Exhibit 99

RigNet Announces Second Quarter 2017 Earnings Results

HOUSTON – August 7, 2017 – RigNet, Inc. (NASDAQ: RNET), a leading global provider of customized systems and solutions serving customers with complex data networking and operational requirements, today reported results for the quarter ended June 30, 2017.

Quarterly revenue was $49.2 million representing an increase of $1.1 million compared to the prior quarter and a decrease of $5.7 million compared to the prior year quarter. The revenue increase compared to the prior quarter reflects a $2.1 million increase in SI&A revenue partially offset by a $1.0 million decrease in Managed Service revenue. The decrease compared to the prior year quarter reflects a $7.2 million decrease in Managed Services revenue partially offset by a $1.4 million increase in SI&A revenue. Revenue continues to be impacted by previously announced reductions in offshore drilling.

GAAP net loss attributable to common stockholders was $4.2 million, or $0.24 per share, compared to net loss attributable to common stockholders of $2.0 million, or $0.11 per share, in the prior quarter and net loss attributable to common stockholders of $4.8 million, or $0.27 per share, in the prior year quarter.

Quarterly Adjusted EBITDA was $6.1 million compared to $7.2 million in the prior quarter and $8.6 million in the prior year quarter. The decrease compared to the prior quarter was due primarily to ongoing operating expenses. The decrease compared to the prior year quarter was due primarily to decreased revenue partially offset by a reduction in ongoing operating expenses.

Capital expenditures were $4.9 million compared to $3.2 million in the prior quarter and $4.7 million in the prior year quarter. Unlevered Free Cash Flow, defined as Adjusted EBITDA less capital expenditures, was $1.1 million compared to $4.1 million in the prior quarter and $4.0 million in the prior year quarter.

15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net

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In the quarter ended June 30, 2017, the Company recorded $1.9 million in acquisition costs, and a gain of $0.8 million for the change in fair value of an earn-out. In the quarter ended June 30, 2016, the Company recorded restructuring charges of $1.1 million, $0.4 million of impairment of intangible assets, $0.2 million of CEO search costs and ERP implementation costs of $0.6 million. The restructuring charges and acquisition costs are added back to net loss in our non-GAAP measures below.

Steven E. Pickett, chief executive officer and president, commented, “Our recent acquisition of Cyphre, in conjunction with our acquisitions of substantially all of the assets of DTS and ESS, have helped advance our stated strategies to build and grow our over-the-top portfolio and to diversify our revenue stream. These acquisitions also demonstrate our commitment to expand the RigNet value proposition to our customers while increasing RigNet’s addressable market. Furthermore, during the second quarter, our team expanded RigNet’s core market position by increasing the number of sites we serve by 5% quarter over quarter while delivering $1.1m in Unlevered Free Cash Flow.”

A conference call for investors will be held at 11:00 a.m. Eastern Time (10:00 a.m. Central Time) on Tuesday, August 8, 2017, to discuss RigNet’s second quarter 2017 results. The call may be accessed live over the telephone by dialing +1 (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: Adjusted EBITDA and Unlevered Free Cash Flow. Adjusted EBITDA and Unlevered Free Cash Flow 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 filings for the year ended December 31, 2016 for a more detailed discussion of the uses and limitations of our non-GAAP financial measures.

We define Adjusted EBITDA as net income (loss) plus interest expense, income tax expense (benefit), depreciation and amortization, impairment of goodwill, intangibles, property, plant and equipment, foreign exchange impact of intercompany financing activities, (gain) loss on retirement of property, plant and equipment, change in fair value of earn-outs, stock-based compensation, merger/acquisition costs, executive departure costs, restructuring charges and non-recurring items.

We define Unlevered Free Cash Flow as Adjusted EBITDA less capital expenditures. Unlevered Free Cash Flow 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.

15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net

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About RigNet

RigNet (NASDAQ:RNET) is a leading global specialized provider of customized systems and solutions serving customers with complex data networking and operational requirements. RigNet provides solutions ranging from fully-managed voice and data networks to more advanced applications that include video conferencing, crew welfare, asset monitoring and real-time data services. RigNet is based in Houston, Texas and has operations around the globe.

For more information on RigNet, please visit www.rig.net. RigNet is a registered trademark of RigNet, Inc.

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” 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.

15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net

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15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net

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15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net

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NOTE: Consolidated balances include the three segments above along with corporate activities and intercompany eliminations.

15115  PARK  ROW  BLVD,  SUITE  300,  HOUSTON,  TEXAS  77084-4947  PHONE  281.674.0100  FAX   281.674.0101  http://www.rig.net