Conference Call:

Rambus management will discuss the results of the quarter during a conference call scheduled for 2:00pm PT today. The call, audio and slides will be available online at investor.rambus.com and a replay will be available for the next week at the following numbers: (855) 859-2056 (domestic) or (404) 537-3406 (international) with ID#36458130.

About Rambus Inc.

Rambus creates innovative hardware and software technologies, driving advancements from the data center to the mobile edge. Our chips, customizable IP cores, architecture licenses, tools, software, services, training and innovations improve the competitive advantage of our customers. We collaborate with the industry, partnering with leading ASIC and SoC designers, foundries, IP developers, EDA companies and validation labs. Our products are integrated into tens of billions of devices and systems, powering and securing diverse applications, including Big Data, Internet of Things (IoT), mobile payments, and smart ticketing. At Rambus, we are makers of better. For more information, visit  rambus.com.

Forward-Looking Statements

This release contains forward-looking statements under the Private Securities Litigation Reform Act of 1995 including those relating to Rambus’ expectations regarding our new product and service offerings, growth for 2017 and financial guidance for the third quarter of 2017, including revenue, operating costs and expenses, earnings per share and estimated, fixed, long-term projected tax rates, both on a GAAP and non-GAAP basis as appropriate. Such forward-looking statements are based on current expectations, estimates and projections, management’s beliefs and certain assumptions made by Rambus’ management. Actual results may differ materially. Rambus’ business generally is subject to a number of risks which are described more fully in Rambus’ periodic reports filed with the Securities and Exchange Commission. Rambus undertakes no obligation to update forward-looking statements to reflect events or circumstances after the date hereof.

Overview of Non-GAAP Results

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 margin, operating income (loss), net income (loss), diluted net income (loss) per share and Adjusted EBITDA. 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, 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.

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 35 percent for both 2017 and 2016, 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, deferred tax asset valuation allowance and the release of any deferred tax asset valuation allowance. Accordingly, the Company has applied these tax rates to its non-GAAP financial results for all periods in the relevant years 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.