Non-GAAP net income in the second quarter of 2015 was $16.0 million, 6% lower than the prior quarter and 15% lower than the second quarter of 2014. Non-GAAP diluted net income per share was $0.13 in the second quarter of 2015 as compared to $0.14 in the prior quarter and $0.16 in the second quarter of 2014.

Non-GAAP net income for the six months ended June 30, 2015 was $33.0 million as compared to $38.6 million in the same period of 2014. Non-GAAP diluted net income per share was $0.28 for the six months ended June 30, 2015 as compared to non-GAAP diluted net income per share of $0.33 in the same period of 2014.

Other Financial Highlights:

Cash, cash equivalents, and marketable securities as of June 30, 2015 were $348.1 million, an increase of $30.4 million from March 31, 2015. The increase in cash was driven by operating activities.

During the second quarter of 2015, the Company recorded an income tax provision of approximately $5.8 million. As the Company continues to maintain a full valuation allowance against its U.S. deferred tax assets, the Company’s tax provision consists of primarily foreign withholding taxes.

Third Quarter 2015 Outlook:

For the third quarter of 2015, the Company expects revenue to be between $73 million and $78 million. Revenue is not without risk and includes expectations that the Company will sign new customer agreements for patent and solutions licensing.

Conference Call:

The Company will host a conference call at 2:00 p.m. PT today to discuss its financial results. The call, audio and slides will be available online at investor.rambus.com. A replay will be available following the call as a webcast on the Rambus Investor Relations website and for one week at the following numbers: (855) 859-2056 (domestic) or (404) 537-3406 (international) with ID# 77962571.

(1) Non-GAAP Financial Information:

In the commentary set forth above and in the financial statements included in this earnings release, the Company presents the following non-GAAP financial measures: operating costs and expenses, operating income (loss) and net income (loss). In computing each of these non-GAAP financial measures, the following items were considered as discussed below: stock-based compensation expenses, acquisition-related transaction costs and retention bonus expense, amortization expenses, restructuring charges, non-cash interest expense and certain other one-time adjustments. The non-GAAP financial measures disclosed by the Company should not be considered a substitute for, or superior to, financial measures calculated in accordance with GAAP, and the financial results calculated in accordance with GAAP and reconciliations from these results should be carefully evaluated. Management believes the non-GAAP financial measures are appropriate for both its own assessment of, and to show investors, how the Company’s performance compares to other periods. The non-GAAP financial measures used by the Company may be calculated differently from, and therefore may not be comparable to, similarly titled measures used by other companies. Reconciliation from GAAP to non-GAAP results is included in the financial statements contained in this release.

The Company’s non-GAAP financial measures reflect adjustments based on the following items:

Stock-based compensation expense. These expenses primarily relate to employee stock options, employee stock purchase plans, and employee non-vested equity stock and non-vested stock units. The Company excludes stock-based compensation expense from its non-GAAP measures primarily because such expenses are non-cash expenses that the Company does not believe are reflective of ongoing operating results. Additionally, given the fact that other companies may grant different amounts and types of equity awards and may use different option valuation assumptions, excluding stock-based compensation expense permits more accurate comparisons of the Company’s results with peer companies.

Acquisition-related transaction costs and retention bonus expense. These expenses include all direct costs of certain acquisitions and the current periods’ portion of any retention bonus expense associated with the acquisitions. The Company excludes these expenses in order to provide better comparability between periods.

Restructuring charges. These charges may consist of severance, contractual retention payments, exit costs and other charges and are excluded because such charges are not directly related to ongoing business results and do not reflect expected future operating expenses.

Amortization expense. The Company incurs expenses for the amortization of intangible assets acquired in acquisitions. The Company excludes these items because these expenses are not reflective of ongoing operating results in the period incurred. These amounts arise from the Company’s prior acquisitions and have no direct correlation to the operation of the Company’s core business.

Non-cash interest expense on convertible notes. The Company incurs non-cash interest expense related to its convertible notes. The Company excludes non-cash interest expense related to its convertible notes to provide more accurate comparisons of the Company’s results with other peer companies and to more accurately reflect the Company’s ongoing operations.

Income tax adjustments. For purposes of internal forecasting, planning and analyzing future periods that assume net income from operations, the Company estimates a fixed, long-term projected tax rate of approximately 36 percent, which consists of estimated U.S. federal and state tax rates, and excludes tax rates associated with certain items such as withholding tax, tax credits and deferred tax asset valuation allowance. Accordingly, the Company has applied the 36 percent tax rate to its non-GAAP financial results for all periods to assist the Company’s planning for future periods. The Company has provided below a reconciliation of its GAAP provision for income taxes and GAAP effective tax rate to the assumed non-GAAP provision for income taxes and non-GAAP effective tax rate.