Exhibit 99.1

CISCO REPORTS THIRD QUARTER EARNINGS

Strong Execution Drives Business Momentum and Return for Shareholders

SAN JOSE, Calif. — May 13, 2015 — Cisco, the worldwide leader in networking that transforms how people connect, communicate and collaborate, today reported its third quarter results for the period ended April 25, 2015. Cisco reported third quarter revenue of $12.1 billion, net income on a generally accepted accounting principles (GAAP) basis of $2.4 billion or $0.47 per share, and non-GAAP net income of $2.8 billion or $0.54 per share.

“Cisco is in a very strong position and we delivered another solid quarter. Our vision and strategy are working and we are executing very well in a tough environment, as evidenced in our revenue growth, profitability, strong gross margins and cash generation. Our customers feel the pace of change and disruption in every industry and market, and know their success depends on digitizing their business. Whether they are the disruptor or the incumbent, they are coming to Cisco as their strategic partner. We believe we are pulling away from our competition using the same formula we’ve always used: integrating our industry-leading products in every category into architectures and solutions that deliver real outcomes. We’ve created this opportunity and it is ours to execute,” stated John Chambers, Cisco chairman and CEO.

“I am extremely honored and proud to have led Cisco for the last 20 years and to get us to this positive inflection point. We have a tremendous opportunity to extend our lead in the industry, and with Chuck Robbins as the CEO for Cisco’s next chapter, we have exactly the right leader to capture that opportunity. I could not be more confident in our future.”

GAAP Results

Non-GAAP Results

Revenue for the first nine months of fiscal 2015 was $36.3 billion, compared with $34.8 billion for the first nine months of fiscal 2014. Net income for the first nine months of fiscal 2015, on a GAAP basis, was $6.7 billion or $1.29 per share, compared with $5.6 billion or $1.06 per share for the first nine months of fiscal 2014. Non-GAAP net income for the first nine months of fiscal 2015 was $8.3 billion or $1.62 per share, compared with $8.0 billion or $1.51 per share for the first nine months of fiscal 2014.

A reconciliation between net income on a GAAP basis and non-GAAP net income is provided in the table following the Consolidated Statements of Operations.

Cisco will discuss third quarter results and business outlook on a conference call and webcast at 1:30 p.m. Pacific Time today. Call information and related charts are available at http://investor.cisco.com.

Cash and Cash Equivalents and Investments

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Dividends and Stock Repurchase Program

“I feel great about the quarter. We executed well and the strategy is working,” said Kelly Kramer, Cisco executive vice president and CFO. “We saw good balance again across our portfolio and delivered revenues of $12.1 billion up 5%, and grew earnings per share faster than revenue. We continued our strong cash generation and returned another $2.1 billion to our shareholders. We’re well positioned in the market, managing the company well, and focused on delivering value for our customers and shareholders. It’s an exciting time.”

Internet of Everything

Next Generation of IT

Innovation

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Editor’s Notes:

About Cisco

Cisco (NASDAQ: CSCO) is the worldwide leader in IT that helps companies seize the opportunities of tomorrow by proving that amazing things can happen when you connect the previously unconnected. For ongoing news, please go to http://thenetwork.cisco.com.

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This release may be deemed to contain forward-looking statements, which are subject to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among other things, statements regarding future events (such as our strategy and execution, financial strength, strong cash generation and value of our business model based on digitization, growth, new revenue streams, innovation and selling outcomes, our leadership position across our portfolio and our ability to continue to grow in key technology transitions of cloud, mobility, big data, security, collaboration, and the Internet of Everything, and our goal to be the #1 IT company) and the future financial performance of Cisco that involve risks and uncertainties. Readers are cautioned that these forward-looking statements are only predictions and may differ materially from actual future events or results due to a variety of factors, including: business and economic conditions and growth trends in the networking industry, our customer markets and various geographic regions; global economic conditions and uncertainties in the geopolitical environment; overall information technology spending; the growth and evolution of the Internet and levels of capital spending on Internet-based systems; variations in customer demand for products and services, including sales to the service provider market and other customer markets; the return on our investments in certain priorities, including our foundational priorities, and in certain geographical locations; the timing of orders and manufacturing and customer lead times; changes in customer order patterns or customer mix; insufficient, excess or obsolete inventory; variability of component costs; variations in sales channels, product costs or mix of products sold; our ability to successfully acquire businesses and technologies and to successfully integrate and operate these acquired businesses and technologies; our ability to achieve expected benefits of our partnerships; increased competition in our product and service markets, including the data center; dependence on the introduction and market acceptance of new product offerings and standards; rapid technological and market change; manufacturing and sourcing risks; product defects and returns; litigation involving patents, intellectual property, antitrust, shareholder and other matters, and governmental investigations; natural catastrophic events; a pandemic or epidemic; our ability to achieve the benefits anticipated from our investments in sales, engineering, service, marketing and manufacturing activities; our ability to recruit and retain key personnel; our ability to manage financial risk, and to manage expenses during economic downturns; risks related to the global nature of our operations, including our operations in emerging markets; currency fluctuations and other international factors; changes in provision for income taxes, including changes in tax laws and regulations or adverse outcomes resulting from examinations of our income tax returns; potential volatility in operating results; and other factors listed in Cisco’s most recent reports on Forms 10-Q and 10-K filed on February 18, 2015 and September 9, 2014, respectively. The financial information contained in this release should be read in conjunction with the consolidated financial statements and notes thereto included in Cisco’s most recent reports on Forms 10-Q and 10-K as each may be amended from time to time. Cisco’s results of operations for the three and nine months ended April 25, 2015 are not necessarily indicative of Cisco’s operating results for any future periods. Any projections in this release are based on limited information currently available to Cisco, which is subject to change. Although any such projections and the factors influencing them will likely change, Cisco will not necessarily update the information, since Cisco will only provide guidance at certain points during the year. Such information speaks only as of the date of this release.

This release includes non-GAAP net income, non-GAAP effective tax rates, non-GAAP net income per share data, non-GAAP inventory turns and free cash flow.

These non-GAAP measures are not in accordance with, or an alternative for, measures prepared in accordance with generally accepted accounting principles and may be different from non-GAAP measures used by other companies. In addition, these non-GAAP measures are not based on any comprehensive set of accounting rules or principles. Cisco believes that non-GAAP measures have limitations in that they do not reflect all of the amounts associated with Cisco’s results of operations as determined in accordance with GAAP and that these measures should only be used to evaluate Cisco’s results of operations in conjunction with the corresponding GAAP measures.

Cisco believes that the presentation of non-GAAP net income, non-GAAP effective tax rates, and non-GAAP net income per share data, when shown in conjunction with the corresponding GAAP measures, provides useful information to investors and management regarding financial and business trends relating to its financial condition and results of operations. In addition, Cisco believes that the presentation of non-GAAP inventory turns provides useful information to investors and management regarding financial and business trends relating to inventory management based on the operating activities of the periods presented. Cisco believes that the presentation of free cash flow, which it defines as the net cash provided by operating activities less cash used to acquire property and equipment, to be a liquidity measure that provides useful information to management

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and investors because of its intent to return a stated percentage of free cash flow to shareholders in the form of dividends and stock repurchases. Cisco further regards free cash flow as a useful measure because it reflects cash that can be used to, among other things, invest in its business, make strategic acquisitions, repurchase common stock, and pay dividends on its common stock, after deducting capital investments.

For its internal budgeting process, Cisco’s management uses financial statements that do not include, when applicable, share-based compensation expense, amortization of acquisition-related intangible assets, impact to cost of sales from purchase accounting adjustments to inventory, acquisition-related/divestiture costs (which includes a gain recognized in the second quarter of fiscal 2015 with respect to the reorganization and divestiture of a portion of Cisco’s investment in VCE), significant asset impairments and restructurings, significant litigation and other contingencies, the income tax effects of the foregoing, and significant tax matters. Cisco’s management also uses the foregoing non-GAAP measures, in addition to the corresponding GAAP measures, in reviewing the financial results of Cisco. In prior periods, Cisco has excluded other items that it no longer excludes for purposes of its non-GAAP financial measures. From time to time in the future there may be other items that Cisco may exclude for purposes of its internal budgeting process and in reviewing its financial results. For additional information on the items excluded by Cisco from one or more of its non-GAAP financial measures, refer to the Form 8-K regarding this release furnished today to the Securities and Exchange Commission.

Copyright ^© 2015 Cisco and/or its affiliates. All rights reserved. Cisco, the Cisco logo and Cisco Intercloud are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to: www.cisco.com/go/trademarks. Third-party trademarks mentioned in this document are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. This document is Cisco Public Information.

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CISCO SYSTEMS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(In millions, except per-share amounts)

(Unaudited)

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RECONCILIATION OF GAAP TO NON-GAAP NET INCOME

(In millions, except per-share amounts)

RECONCILIATION OF GAAP TO NON-GAAP EFFECTIVE TAX RATE

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CISCO SYSTEMS, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(In millions)

(Unaudited)

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CISCO SYSTEMS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In millions)

(Unaudited) 

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CASH AND CASH EQUIVALENTS AND INVESTMENTS

(In millions)

RECONCILIATION OF NET CASH PROVIDED BY OPERATING ACTIVITIES

TO FREE CASH FLOW (NON-GAAP)

(In millions)

DIVIDENDS PAID AND REPURCHASES OF COMMON STOCK

(In millions, except per-share amounts)

ACCOUNTS RECEIVABLE AND DSO

(In millions, except DSO)

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INVENTORIES

(In millions)

INVENTORY TURNS AND RECONCILIATION OF GAAP TO NON-GAAP

COST OF SALES USED IN INVENTORY TURNS

(In millions, except annualized inventory turns)

DEFERRED REVENUE

(In millions)

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SUMMARY OF SHARE-BASED COMPENSATION EXPENSE

(In millions)

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