UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number: 811-05833

T. Rowe Price Institutional International Funds, Inc.

(Exact name of registrant as specified in charter)

100 East Pratt Street, Baltimore, MD 21202

(Address of principal executive offices)

David Oestreicher

100 East Pratt Street, Baltimore, MD 21202

(Name and address of agent for service)

Registrant’s telephone number, including area code: (410) 345-2000

Date of fiscal year end: October 31

Date of reporting period: October 31, 2015

Item 1. Report to Shareholders

Institutional International Core
Equity Fund October 31, 2015

Highlights

● Stocks in non-U.S. developed markets were modestly positive in U.S. dollar terms for the 12 months ended October 31, 2015, as local market gains were largely offset by weaker currencies.

● The Institutional International Core Equity Fund returned -7.80% and -1.79% for the 6- and 12-month periods ended October 31, 2015, respectively. The portfolio trailed the MSCI EAFE Index but outpaced its Lipper peer group average for both periods.

● Portfolio holdings in the consumer staples, information technology, and consumer discretionary sectors registered gains for the fiscal year, but utilities, materials, and energy shares declined sharply.

● Stock valuations vary widely by sector in this slow-growth environment, highlighting the importance of fundamental research and bottom-up stock selection as we look for opportunities in companies that are successful at controlling costs and growing profits amid modest economic growth.

The views and opinions in this report were current as of October 31, 2015. They are not guarantees of performance or investment results and should not be taken as investment advice. Investment decisions reflect a variety of factors, and the managers reserve the right to change their views about individual stocks, sectors, and the markets at any time. As a result, the views expressed should not be relied upon as a forecast of the fund’s future investment intent. The report is certified under the Sarbanes-Oxley Act, which requires mutual funds and other public companies to affirm that, to the best of their knowledge, the information in their financial reports is fairly and accurately stated in all material respects.

Manager’s Letter
T. Rowe Price Institutional International Core Equity Fund

Dear Investor

Stocks in non-U.S. developed markets were modestly positive in U.S. dollar terms for the 12 months ended October 31, 2015, as local market gains were largely offset by weaker currencies. Aggressive monetary stimulus measures in Europe, Japan, and other key markets weakened currencies and boosted their respective economies, particularly export-oriented segments. Low energy and commodity costs also tended to support consumer and business finances. However, concerns about slowing growth in China and other emerging markets, uncertainty over the timing and pace of U.S. interest rate hikes, and rising geopolitical concerns weighed on markets in the latter half of the reporting period.

As shown in the Performance Comparison table, the Institutional International Core Equity Fund returned -7.80% and -1.79% for the six and 12 months ended October 31, 2015, respectively. The portfolio trailed the MSCI EAFE Index but outpaced its Lipper peer group average for both periods. The portfolio’s sector performance was mixed. Consumer staples, information technology, and consumer discretionary shares posted solid gains. Health care and financials were modestly positive, while industrials and business services declined slightly. Smaller positions in the utilities, materials, and energy sectors reflected a difficult operating environment and fell sharply. Stock selection detracted from results versus the MSCI benchmark, but this was partially offset by a positive effect from the portfolio’s sector weights.

Market Environment

Stocks in developed European markets generated good gains in the first half of the 12-month reporting period, but currency weakness resulted in roughly flat performance in U.S. dollar terms for the fiscal year. Launched in March, the European Central Bank’s (ECB) quantitative easing (QE) program successfully weakened the euro and helped make European exporters more competitive in the global marketplace. Low energy costs and optimism about enhanced liquidity and an improved credit environment were also beneficial. Stocks gave back most of the gains later in the period because of renewed concerns about Greece’s debt and the country’s status in the eurozone, as well as worries about the potential for slowing growth in China and other emerging markets to weigh on Europe’s fragile recovery. European currencies weakened considerably versus the U.S. dollar, which ate into returns for dollar-based investors.

Japanese equities were solidly positive for the fiscal year. The Bank of Japan (BoJ) continued its aggressive monetary stimulus in its efforts to keep interest rates low, battle deflationary pressures, and boost domestic consumption. A weak yen and low prices for oil and other commodities helped many Japanese businesses, particularly exporters, reduce costs and increase revenues and earnings. Started in 2014, the Japanese Government Pension Investment Fund’s ongoing reallocation of assets from bonds to stocks also supported equities. Uncertainty about the impact of slowing growth in China, an important end market for many Japanese exports, weighed on stocks later in the period. In addition, domestic consumption remained soft, and the economy fell back into a mild recession, giving rise to concerns that even more intense monetary stimulus may be forthcoming.

Emerging markets stocks declined almost uniformly. Concerns about the health of the Chinese economy and low commodity prices mixed with uncertainty about pending U.S. interest rate hikes and burgeoning geopolitical risk to drag investor sentiment lower. Chinese stocks endured something of a roller-coaster ride but finished the period roughly where they began. Brazil was one of the weakest markets as its economy fell into recession and the government struggled to contain a growing corruption scandal surrounding a major state-owned energy company. In emerging Europe, Turkey lagged following indecisive elections, and Greece weakened sharply after its third bailout and the imposition of capital controls. India declined moderately, while Russia fell by double digits amid low oil prices and sanctions imposed as a result of its actions in Ukraine. Almost all emerging markets currencies weakened against the dollar over the 12-month reporting period.

Portfolio Highlights and Positioning

Our consumer staples shares rose approximately 10% overall and generated the portfolio’s largest absolute gains for the 12-month period. Overall, the sector tends to offer good earnings growth and healthy dividends, but it has had a good run over recent years and appears relatively expensive as a result. Although stock-specific opportunities can still be found, consumer staples is our largest underweight position versus the MSCI benchmark due to broad valuation concerns. Multinational consumer goods companies Unilever (Netherlands) and Nestlé (Switzerland) were among our top contributors. Both companies benefited from moderate but resilient volume and earnings growth, and we took advantage of short-term price volatility to add to both positions during the period. Global cosmetics company L’Oréal (France) was another strong contributor. Palm oil and oilseed manufacturer Wilmar International (Singapore) declined due to concerns about the effect of slowing growth in China, a key end market. However, we initiated our position at favorable valuations and are optimistic that the cyclical nature of its palm oil business will allow the stock to rebound over time. UK-based food retailer Tesco weighed on results amid soft pricing power and heightened competition from discount grocery chains. However, we are encouraged by a new management team’s recent efforts to shed non-core businesses and are optimistic that they can turn the business around. (Please refer to the fund’s portfolio of investments for a complete list of holdings and the amount each represents in the portfolio.)

Our information technology stocks gained over 6% for the fiscal year and were led by names in the semiconductor and IT services industries. Semiconductor manufacturer Avago Technologies (Singapore) was a top-10 contributor as the company’s earnings results continue to meet expectations, due in large part to its exposure to Apple’s hot-selling iPhone 6S smartphone. A recently initiated position in IT services company Infosys (India) rose on good sales growth and improving margins as management focuses on new products and enhancing the customer experience, while working hard to cut costs and extract greater efficiencies from its operations. Optical sensor and lighting manufacturer Hamamatsu Photonics (Japan) and Internet software and services companies Kakaku.com (Japan) and Tencent Holdings (China) also helped performance for the period. Baidu, China’s dominant search engine platform, detracted from results after reporting higher-than-expected expenses related to its online-to-offline (O2O) business investments. We reduced our position due to concerns that rising expenses for O2O initiatives could generate relatively low returns for some time.

Our financials stocks posted a modest overall gain. Financials is the portfolio’s largest sector allocation, and overall valuations look attractive. Insurance companies were some of our top performers for the period. Home and automotive insurer Direct Line Insurance (UK) gained after the company beat earnings expectations amid an improved operating environment in Europe. The company’s stock should continue to benefit from attractive dividend distributions and improved efficiency, as well as falling claims frequency in its core automotive business. Ping An Insurance (China) was another strong contributor. Ping An is a Chinese financial conglomerate with both life insurance and non-life insurance businesses, a bank, and a securities business. The company continues to benefit from long-term secular growth in China’s financial services market. AXA (France), Tokio Marine Holdings (Japan), and Allianz (Germany) were also good performers. The banking industry detracted from results for the period as many of our stocks were punished by concerns about slowing global economic growth. Australia & New Zealand Banking (Australia), United Overseas Bank (Singapore), Standard Chartered (UK), and Svenska Handelsbanken (Sweden) all declined. We believe that these and many other high-quality banks have been oversold, and we continue to look for select opportunities in companies where share prices have yet to fully account for expected modest economic growth.

Our industrials and business services stocks declined modestly. We remain underweight the sector because we believe current valuations are not justified against a backdrop of relatively modest global economic growth. Industrial conglomerate Hutchison Whampoa (Hong Kong) was among the portfolio’s top overall contributors. Hutchison rose early in 2015 after the company announced a restructuring plan to simplify its relationship with parent Cheung Kong Holdings and spin off property assets into a separate entity. (The reorganization occurred in June 2015 and resulted in two new entities: CK Hutchison Holdings and Cheung Kong Property Holdings.) The deal should create balance sheet capacity and could lead to future dividend increases. Commercial engine manufacturer Rolls-Royce (UK) fell after the company issued profit warnings for 2015 and 2016 based on disappointing results in its marine division and headwinds in civil aviation. We believe the long-term thesis for Rolls-Royce remains intact and that the profit warnings have failed to adequately value the company’s long-term growth potential. Danish industrial conglomerate Maersk was pressured by the sharp decline in oil prices over the period. However, we continue to see value in the stock due to strong operational performance in its container business, which makes up 70% of its net income, as well as management’s track record of capital discipline.

Small positions in the utilities, materials, and energy sectors hindered results for the period. Although prices for many energy-related stocks have fallen sharply, we remain underweight the sector for several reasons. Most of the factors that contributed to the steep fall in oil prices remain in place: tepid global economic growth, a strong U.S. dollar, growing North American shale oil production, and Saudi Arabia’s unwillingness to cut production to support prices. Over time, low prices will eventually weed out the higher-cost suppliers and those with weak balance sheets, but until then, we expect continued weakness in global energy and commodities markets. Oil exploration and production companies Royal Dutch Shell (UK/Netherlands) and Statoil (Norway), metals and mining firms BHP Billiton (UK/Australia) and Rio Tinto (UK), and multi-utilities Engie (France) and E.ON (Germany) all detracted from the portfolio’s performance.

From a geographic perspective, the portfolio is heavily focused on Europe. We are particularly optimistic about the UK, where we traditionally find a number of high-quality companies with shareholder-friendly management operating in a stable political and regulatory environment. We also have sizable allocations to Germany, France, and Switzerland. Japan represents our second-largest country allocation. We are encouraged by recent incentives for companies to focus on corporate profitability and shareholder returns. However, we remain modestly underweight Japan versus the benchmark due to concerns about sluggish economic growth and the government’s ability to follow through on a long to-do list of structural reforms. The Pacific Rim accounts for a significant portion of the portfolio, with Australia, Singapore, and Hong Kong among our larger allocations. Emerging markets account for approximately 5% of the portfolio.

Investment Outlook

Europe’s economy started to grow again in 2015, but the recovery remains modest and vulnerable. The ECB’s quantitative easing program has weakened the euro and boosted exports, while low energy costs support consumer finances. Quantitative easing may provide a boost to the region’s economy, but it is not without risks and does not address the profound structural challenges that led to the downturn. In theory, QE should improve liquidity and improve loan demand. However, businesses have been reluctant to spend in the face of tepid economic growth, low inflation, and elevated unemployment. Corporate earnings generally reflect the soft-growth environment and are still recovering. However, years of cost cutting in the wake of the global financial crisis means that they have room to grow if the economic recovery continues.

Japan’s economy emerged from a tax-induced recession, but consumer spending and wage growth remain muted. The BoJ is pumping trillions of yen into the economy to keep interest rates low, stimulate inflation, and keep the currency more competitive. The aggressive stimulus measures have succeeded in driving up the prices of some imported goods, but they have weakened purchasing power. So far, the government’s mix of monetary, fiscal, and structural policies still have not had a broad and lasting effect on low inflation and sluggish growth.

Conditions in emerging markets continue to diverge. Slowing growth in China has hurt global trade, weighed on commodity prices, and punished commodity-producing economies like Brazil. While there is significant divergence across developing countries in terms of economic growth, inflation, and fiscal health, many export-oriented companies should benefit from modest U.S. economic growth and a stronger U.S. dollar. Near-term risks include a worse-than-expected slowdown in China or a crisis in its financial system, a sharper-than-expected rise in U.S. interest rates as the Fed normalizes its monetary policy, and rising geopolitical turmoil. Overall, emerging markets equity valuations are below historical averages, but there is a wide variation between inexpensive-but-challenged cyclical shares and shares of higher-quality consumer companies.

We are also mindful of the risks posed by the massive expansion of government and central bank balance sheets resulting from fiscal and monetary stimulus measures in the years since the global financial crisis, particularly in developed markets. Unless policymakers take effective measures to address the extraordinary debt accrued over the past few years, they will have less room to maneuver during the next economic downturn. While monetary stimulus can boost economic growth, its effect cannot last without reforms to address underlying structural problems in labor markets, tax and regulatory regimes, and fiscal policies. In addition, concerns about potentially more onerous tax and regulatory policies in many countries are weighing on business investment and growth. Although of limited recompense, we note that this uncertainty also serves to increase the barriers to entry in many businesses, which is a positive for the profit margins of some existing companies.

Good investments have become harder to find in the global market environment. Nevertheless, we will continue to rely on our independent global research platform to uncover compelling opportunities, focusing on companies that are able to grow earnings and cash flow through sound business models and capital allocation regardless of short-term economic uncertainty.

Respectfully submitted,

Raymond A. Mills
Chairman of the fund’s Investment Advisory Committee

November 17, 2015

The committee chairman has day-to-day responsibility for managing the portfolio and works with committee members in developing and executing the fund’s investment program.

Risks of International Investing

Funds that invest overseas generally carry more risk than funds that invest strictly in U.S. assets. Funds investing in a single country or in a limited geographic region tend to be riskier than more diversified funds. Risks can result from varying stages of economic and political development; differing regulatory environments, trading days, and accounting standards; and higher transaction costs of non-U.S. markets. Non-U.S. investments are also subject to currency risk, or a decline in the value of a foreign currency versus the U.S. dollar, which reduces the dollar value of securities denominated in that currency.

Glossary

Lipper averages: The averages of available mutual fund performance returns for specified time periods in categories defined by Lipper Inc.

MSCI EAFE Index: An index that measures equity market performance of developed countries in the Europe, Australasia, and Far East regions.

Note: MSCI makes no express or implied warranties or representations and shall have no liability whatsoever with respect to any MSCI data contained herein. The MSCI data may not be further redistributed or used as a basis for other indices or any securities or financial products. This report is not approved, reviewed, or produced by MSCI.

Portfolio Highlights

Performance and Expenses
T. Rowe Price Institutional International Core Equity Fund

Growth of $1 Million

This chart shows the value of a hypothetical $1 million investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The result is compared with benchmarks, which may include a broad-based market index and a peer group average or index. Market indexes do not include expenses, which are deducted from fund returns as well as mutual fund averages and indexes.

Fund Expense Example

As a mutual fund shareholder, you may incur two types of costs: (1) transaction costs, such as redemption fees or sales loads, and (2) ongoing costs, including management fees, distribution and service (12b-1) fees, and other fund expenses. The following example is intended to help you understand your ongoing costs (in dollars) of investing in the fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the most recent six-month period and held for the entire period.

Actual Expenses
The first line of the following table (Actual) provides information about actual account values and actual expenses. You may use the information on this line, together with your account balance, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number on the first line under the heading “Expenses Paid During Period” to estimate the expenses you paid on your account during this period.

Hypothetical Example for Comparison Purposes
The information on the second line of the table (Hypothetical) is based on hypothetical account values and expenses derived from the fund’s actual expense ratio and an assumed 5% per year rate of return before expenses (not the fund’s actual return). You may compare the ongoing costs of investing in the fund with other funds by contrasting this 5% hypothetical example and the 5% hypothetical examples that appear in the shareholder reports of the other funds. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period.

You should also be aware that the expenses shown in the table highlight only your ongoing costs and do not reflect any transaction costs, such as redemption fees or sales loads. Therefore, the second line of the table is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. To the extent a fund charges transaction costs, however, the total cost of owning that fund is higher.

Financial Highlights
T. Rowe Price Institutional International Core Equity Fund

The accompanying notes are an integral part of these financial statements.

Portfolio of Investments^‡
T. Rowe Price Institutional International Core Equity Fund
October 31, 2015

The accompanying notes are an integral part of these financial statements.

Statement of Assets and Liabilities
T. Rowe Price Institutional International Core Equity Fund
October 31, 2015
($000s, except shares and per share amounts)

The accompanying notes are an integral part of these financial statements.

Statement of Operations
T. Rowe Price Institutional International Core Equity Fund
($000s)

The accompanying notes are an integral part of these financial statements.

Statement of Changes in Net Assets
T. Rowe Price Institutional International Core Equity Fund
($000s)

The accompanying notes are an integral part of these financial statements.

Notes to Financial Statements
T. Rowe Price Institutional International Core Equity Fund
October 31, 2015

T. Rowe Price Institutional International Funds, Inc. (the corporation), is registered under the Investment Company Act of 1940 (the 1940 Act). The Institutional International Core Equity Fund (the fund) is a diversified, open-end management investment company established by the corporation. The fund commenced operations on October 27, 2010. The fund seeks long-term growth of capital through investments in the common stocks of non-U.S. companies.

NOTE 1 - SIGNIFICANT ACCOUNTING POLICIES

Basis of Preparation The fund is an investment company and follows accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 (ASC 946). The accompanying financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (GAAP), including, but not limited to, ASC 946. GAAP requires the use of estimates made by management. Management believes that estimates and valuations are appropriate; however, actual results may differ from those estimates, and the valuations reflected in the accompanying financial statements may differ from the value ultimately realized upon sale or maturity.

Investment Transactions, Investment Income, and Distributions Income and expenses are recorded on the accrual basis. Dividends received from mutual fund investments are reflected as dividend income; capital gain distributions are reflected as realized gain/loss. Dividend income and capital gain distributions are recorded on the ex-dividend date. Income tax-related interest and penalties, if incurred, would be recorded as income tax expense. Investment transactions are accounted for on the trade date. Realized gains and losses are reported on the identified cost basis. Distributions to shareholders are recorded on the ex-dividend date. Income distributions are declared and paid annually. Capital gain distributions, if any, are generally declared and paid by the fund annually.

Currency Translation Assets, including investments, and liabilities denominated in foreign currencies are translated into U.S. dollar values each day at the prevailing exchange rate, using the mean of the bid and asked prices of such currencies against U.S. dollars as quoted by a major bank. Purchases and sales of securities, income, and expenses are translated into U.S. dollars at the prevailing exchange rate on the date of the transaction. The effect of changes in foreign currency exchange rates on realized and unrealized security gains and losses is reflected as a component of security gains and losses.

Redemption Fees A 2% fee is assessed on redemptions of fund shares held for 90 days or less to deter short-term trading and to protect the interests of long-term shareholders. Redemption fees are withheld from proceeds that shareholders receive from the sale or exchange of fund shares. The fees are paid to the fund and are recorded as an increase to paid-in capital. The fees may cause the redemption price per share to differ from the net asset value per share.

New Accounting Guidance In May 2015, FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820), Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent). The ASU removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient and amends certain disclosure requirements for such investments. The ASU is effective for interim and annual reporting periods beginning after December 15, 2015. Adoption will have no effect on the fund’s net assets or results of operations.

NOTE 2 - VALUATION

The fund’s financial instruments are valued and its net asset value (NAV) per share is computed at the close of the New York Stock Exchange (NYSE), normally 4 p.m. ET, each day the NYSE is open for business.

Fair Value The fund’s financial instruments are reported at fair value, which GAAP defines as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The T. Rowe Price Valuation Committee (the Valuation Committee) has been established by the fund’s Board of Directors (the Board) to ensure that financial instruments are appropriately priced at fair value in accordance with GAAP and the 1940 Act. Subject to oversight by the Board, the Valuation Committee develops and oversees pricing-related policies and procedures and approves all fair value determinations. Specifically, the Valuation Committee establishes procedures to value securities; determines pricing techniques, sources, and persons eligible to effect fair value pricing actions; oversees the selection, services, and performance of pricing vendors; oversees valuation-related business continuity practices; and provides guidance on internal controls and valuation-related matters. The Valuation Committee reports to the Board and has representation from legal, portfolio management and trading, operations, risk management, and the fund’s treasurer.

Various valuation techniques and inputs are used to determine the fair value of financial instruments. GAAP establishes the following fair value hierarchy that categorizes the inputs used to measure fair value:

Level 1 – quoted prices (unadjusted) in active markets for identical financial instruments that the fund can access at the reporting date

Level 2 – inputs other than Level 1 quoted prices that are observable, either directly or indirectly (including, but not limited to, quoted prices for similar financial instruments in active markets, quoted prices for identical or similar financial instruments in inactive markets, interest rates and yield curves, implied volatilities, and credit spreads)

Level 3 – unobservable inputs

Observable inputs are developed using market data, such as publicly available information about actual events or transactions, and reflect the assumptions that market participants would use to price the financial instrument. Unobservable inputs are those for which market data are not available and are developed using the best information available about the assumptions that market participants would use to price the financial instrument. GAAP requires valuation techniques to maximize the use of relevant observable inputs and minimize the use of unobservable inputs. When multiple inputs are used to derive fair value, the financial instrument is assigned to the level within the fair value hierarchy based on the lowest-level input that is significant to the fair value of the financial instrument. Input levels are not necessarily an indication of the risk or liquidity associated with financial instruments at that level but rather the degree of judgment used in determining those values.

Valuation Techniques Equity securities listed or regularly traded on a securities exchange or in the over-the-counter (OTC) market are valued at the last quoted sale price or, for certain markets, the official closing price at the time the valuations are made. OTC Bulletin Board securities are valued at the mean of the closing bid and asked prices. A security that is listed or traded on more than one exchange is valued at the quotation on the exchange determined to be the primary market for such security. Listed securities not traded on a particular day are valued at the mean of the closing bid and asked prices for domestic securities and the last quoted sale or closing price for international securities.

For valuation purposes, the last quoted prices of non-U.S. equity securities may be adjusted to reflect the fair value of such securities at the close of the NYSE. If the fund determines that developments between the close of a foreign market and the close of the NYSE will, in its judgment, materially affect the value of some or all of its portfolio securities, the fund will adjust the previous quoted prices to reflect what it believes to be the fair value of the securities as of the close of the NYSE. In deciding whether it is necessary to adjust quoted prices to reflect fair value, the fund reviews a variety of factors, including developments in foreign markets, the performance of U.S. securities markets, and the performance of instruments trading in U.S. markets that represent foreign securities and baskets of foreign securities. The fund may also fair value securities in other situations, such as when a particular foreign market is closed but the fund is open. The fund uses outside pricing services to provide it with quoted prices and information to evaluate or adjust those prices. The fund cannot predict how often it will use quoted prices and how often it will determine it necessary to adjust those prices to reflect fair value. As a means of evaluating its security valuation process, the fund routinely compares quoted prices, the next day’s opening prices in the same markets, and adjusted prices.

Actively traded equity securities listed on a domestic exchange generally are categorized in Level 1 of the fair value hierarchy. Non-U.S. equity securities generally are categorized in Level 2 of the fair value hierarchy despite the availability of quoted prices because, as described above, the fund evaluates and determines whether those quoted prices reflect fair value at the close of the NYSE or require adjustment. OTC Bulletin Board securities, certain preferred securities, and equity securities traded in inactive markets generally are categorized in Level 2 of the fair value hierarchy.

Investments in mutual funds are valued at the mutual fund’s closing NAV per share on the day of valuation and are categorized in Level 1 of the fair value hierarchy. Assets and liabilities other than financial instruments, including short-term receivables and payables, are carried at cost, or estimated realizable value, if less, which approximates fair value.

Thinly traded financial instruments and those for which the above valuation procedures are inappropriate or are deemed not to reflect fair value are stated at fair value as determined in good faith by the Valuation Committee. The objective of any fair value pricing determination is to arrive at a price that could reasonably be expected from a current sale. Financial instruments fair valued by the Valuation Committee are primarily private placements, restricted securities, warrants, rights, and other securities that are not publicly traded.

Subject to oversight by the Board, the Valuation Committee regularly makes good faith judgments to establish and adjust the fair valuations of certain securities as events occur and circumstances warrant. For instance, in determining the fair value of an equity investment with limited market activity, such as a private placement or a thinly traded public company stock, the Valuation Committee considers a variety of factors, which may include, but are not limited to, the issuer’s business prospects, its financial standing and performance, recent investment transactions in the issuer, new rounds of financing, negotiated transactions of significant size between other investors in the company, relevant market valuations of peer companies, strategic events affecting the company, market liquidity for the issuer, and general economic conditions and events. In consultation with the investment and pricing teams, the Valuation Committee will determine an appropriate valuation technique based on available information, which may include both observable and unobservable inputs. The Valuation Committee typically will afford greatest weight to actual prices in arm’s length transactions, to the extent they represent orderly transactions between market participants, transaction information can be reliably obtained, and prices are deemed representative of fair value. However, the Valuation Committee may also consider other valuation methods such as market-based valuation multiples; a discount or premium from market value of a similar, freely traded security of the same issuer; or some combination. Fair value determinations are reviewed on a regular basis and updated as information becomes available, including actual purchase and sale transactions of the issue. Because any fair value determination involves a significant amount of judgment, there is a degree of subjectivity inherent in such pricing decisions, and fair value prices determined by the Valuation Committee could differ from those of other market participants. Depending on the relative significance of unobservable inputs, including the valuation technique(s) used, fair valued securities may be categorized in Level 2 or 3 of the fair value hierarchy.

Valuation Inputs The following table summarizes the fund’s financial instruments, based on the inputs used to determine their fair values on October 31, 2015:

There were no material transfers between Levels 1 and 2 during the year ended October 31, 2015.

NOTE 3 - OTHER INVESTMENT TRANSACTIONS

Purchases and sales of portfolio securities other than short-term securities aggregated $104,456,000 and $23,961,000, respectively, for the year ended October 31, 2015.

NOTE 4 - FEDERAL INCOME TAXES

No provision for federal income taxes is required since the fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code and distribute to shareholders all of its taxable income and gains. Distributions determined in accordance with federal income tax regulations may differ in amount or character from net investment income and realized gains for financial reporting purposes. Financial reporting records are adjusted for permanent book/tax differences to reflect tax character but are not adjusted for temporary differences.

The fund files U.S. federal, state, and local tax returns as required. The fund’s tax returns are subject to examination by the relevant tax authorities until expiration of the applicable statute of limitations, which is generally three years after the filing of the tax return but which can be extended to six years in certain circumstances. Tax returns for open years have incorporated no uncertain tax positions that require a provision for income taxes.

Distributions during the years ended October 31, 2015 and October 31, 2014, totaled $2,870,000 and $1,729,000, respectively, and were characterized as ordinary income. At October 31, 2015, the tax-basis cost of investments and components of net assets were as follows:

The difference between book-basis and tax-basis net unrealized appreciation (depreciation) is attributable to the deferral of losses from wash sales, and the realization of gains/losses on passive foreign investment companies for tax purposes. The fund intends to retain realized gains to the extent of available capital loss carryforwards. Because the fund is required to use capital loss carryforwards that do not expire before those with expiration dates, all or a portion of its capital loss carryforwards subject to expiration could ultimately go unused. The fund’s available capital loss carryforwards as of October 31, 2015, expire as follows: $134,000 in fiscal 2019; $4,660,000 have no expiration.

NOTE 5 - FOREIGN TAXES

The fund is subject to foreign income taxes imposed by certain countries in which it invests. Additionally, certain foreign currency transactions are subject to tax, and capital gains realized upon disposition of securities issued in or by certain foreign countries are subject to capital gains tax imposed by those countries. All taxes are computed in accordance with the applicable foreign tax law, and, to the extent permitted, capital losses are used to offset capital gains. Taxes attributable to income are accrued by the fund as a reduction of income. Taxes incurred on the purchase of foreign currencies are recorded as realized loss on foreign currency transactions. Current and deferred tax expense attributable to capital gains is reflected as a component of realized or change in unrealized gain/loss on securities in the accompanying financial statements. At October 31, 2015, the fund had no deferred tax liability attributable to foreign securities and no foreign capital loss carryforwards.

NOTE 6 - RELATED PARTY TRANSACTIONS

The fund is managed by T. Rowe Price Associates, Inc. (Price Associates), a wholly owned subsidiary of T. Rowe Price Group, Inc. (Price Group). The investment management agreement between the fund and Price Associates provides for an annual investment management fee equal to 0.65% of the fund’s average daily net assets. The fee is computed daily and paid monthly.

The fund is also subject to a contractual expense limitation through February 28, 2017. During the limitation period, Price Associates is required to waive its management fee and pay the fund for any expenses, excluding interest, taxes, brokerage commissions, and extraordinary expenses, that would otherwise cause the fund’s ratio of annualized total expenses to average net assets (expense ratio) to exceed its expense limitation of 0.75%. The fund is required to repay Price Associates for expenses previously waived/paid to the extent its net assets grow or expenses decline sufficiently to allow repayment without causing the fund’s expense ratio to exceed its expense limitation. However, no repayment will be made more than three years after the date of a payment or waiver. Pursuant to this agreement, $176,000 of expenses were waived/paid by Price Associates during the year ended October 31, 2015. Including these amounts, expenses previously waived/paid by Price Associates in the amount of $503,000 remain subject to repayment by the fund at October 31, 2015.

In addition, the fund has entered into service agreements with Price Associates and a wholly owned subsidiary of Price Associates (collectively, Price). Price Associates provides certain accounting and administrative services to the fund. T. Rowe Price Services, Inc., provides shareholder and administrative services in its capacity as the fund’s transfer and dividend-disbursing agent. For the year ended October 31, 2015, expenses incurred pursuant to these service agreements were $105,000 for Price Associates and less than $1,000 for T. Rowe Price Services, Inc. The total amount payable at period-end pursuant to these service agreements is reflected as Due to Affiliates in the accompanying financial statements.

Mutual funds, trusts, and other accounts managed by Price Associates or its affiliates (collectively, Price funds and accounts) may invest in the fund; however, no Price fund or account may invest for the purpose of exercising management or control over the fund. At October 31, 2015, approximately 5% of the fund’s outstanding shares were held by Price funds and accounts.

The fund may invest in the T. Rowe Price Reserve Investment Fund, the T. Rowe Price Government Reserve Investment Fund, or the T. Rowe Price Short-Term Reserve Fund (collectively, the Price Reserve Investment Funds), open-end management investment companies managed by Price Associates and considered affiliates of the fund. The Price Reserve Investment Funds are offered as short-term investment options to mutual funds, trusts, and other accounts managed by Price Associates or its affiliates and are not available for direct purchase by members of the public. The Price Reserve Investment Funds pay no investment management fees.

Report of Independent Registered Public Accounting Firm

To the Board of Directors of T. Rowe Price Institutional International Funds, Inc. and
Shareholders of T. Rowe Price Institutional International Core Equity Fund

In our opinion, the accompanying statement of assets and liabilities, including the portfolio of investments, and the related statements of operations and of changes in net assets and the financial highlights present fairly, in all material respects, the financial position of T. Rowe Price Institutional International Core Equity Fund (one of the portfolios comprising T. Rowe Price Institutional International Funds, Inc., hereafter referred to as the “Fund”) at October 31, 2015, the results of its operations, the changes in its net assets and the financial highlights for each of the periods indicated therein, in conformity with accounting principles generally accepted in the United States of America. These financial statements and financial highlights (hereafter referred to as “financial statements”) are the responsibility of the Fund’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these financial statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits, which included confirmation of securities at October 31, 2015 by correspondence with the custodian and brokers, and confirmation of the underlying fund by correspondence with the transfer agent, provide a reasonable basis for our opinion.

PricewaterhouseCoopers LLP
Baltimore, Maryland
December 15, 2015

Tax Information (Unaudited) for the Tax Year Ended 10/31/15

We are providing this information as required by the Internal Revenue Code. The amounts shown may differ from those elsewhere in this report because of differences between tax and financial reporting requirements.

For taxable non-corporate shareholders, $3,382,000 of the fund’s income represents qualified dividend income subject to a long-term capital gains tax rate of not greater than 20%.

For corporate shareholders, $7,000 of the fund’s income qualifies for the dividends-received deduction.

The fund will pass through foreign source income of $3,381,000 and foreign taxes paid of $324,000.

Information on Proxy Voting Policies, Procedures, and Records

A description of the policies and procedures used by T. Rowe Price funds and portfolios to determine how to vote proxies relating to portfolio securities is available in each fund’s Statement of Additional Information. You may request this document by calling 1-800-225-5132 or by accessing the SEC’s website, sec.gov.

The description of our proxy voting policies and procedures is also available on our website, troweprice.com. To access it, click on the words “Social Responsibility” at the top of our corporate homepage. Next, click on the words “Conducting Business Responsibly” on the left side of the page that appears. Finally, click on the words “Proxy Voting Policies” on the left side of the page that appears.

Each fund’s most recent annual proxy voting record is available on our website and through the SEC’s website. To access it through our website, follow the directions above to reach the “Conducting Business Responsibly” page. Click on the words “Proxy Voting Records” on the left side of that page, and then click on the “View Proxy Voting Records” link at the bottom of the page that appears.

How to Obtain Quarterly Portfolio Holdings

The fund files a complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q. The fund’s Form N-Q is available electronically on the SEC’s website (sec.gov); hard copies may be reviewed and copied at the SEC’s Public Reference Room, 100 F St. N.E., Washington, DC 20549. For more information on the Public Reference Room, call 1-800-SEC-0330.

About the Fund’s Directors and Officers

Your fund is overseen by a Board of Directors (Board) that meets regularly to review a wide variety of matters affecting or potentially affecting the fund, including performance, investment programs, compliance matters, advisory fees and expenses, service providers, and business and regulatory affairs. The Board elects the fund’s officers, who are listed in the final table. At least 75% of the Board’s members are independent of T. Rowe Price Associates, Inc. (T. Rowe Price), and its affiliates; “inside” or “interested” directors are employees or officers of T. Rowe Price. The business address of each director and officer is 100 East Pratt Street, Baltimore, Maryland 21202. The Statement of Additional Information includes additional information about the fund directors and is available without charge by calling a T. Rowe Price representative at 1-800-638-5660.

Independent Directors

Name (Year of Birth) Year Elected* [Number of T. Rowe Price Portfolios Overseen]	Principal Occupation(s) and Directorships of Public Companies and Other Investment Companies During the Past Five Years
William R. Brody, M.D., Ph.D. (1944) 2009 [179]	President and Trustee, Salk Institute for Biological Studies (2009 to present); Director, BioMed Realty Trust (2013 to present); Director, Novartis, Inc. (2009 to 2014); Director, IBM (2007 to present)
Anthony W. Deering (1945) 1991 [179]	Chairman, Exeter Capital, LLC, a private investment firm (2004 to present); Director, Brixmor Real Estate Investment Trust (2012 to present); Director and Advisory Board Member, Deutsche Bank North America (2004 to present); Director, Under Armour (2008 to present); Director, Vornado Real Estate Investment Trust (2004 to 2012)
Donald W. Dick, Jr. (1943) 1989 [179]	Principal, EuroCapital Partners, LLC, an acquisition and management advisory firm (1995 to present)
Bruce W. Duncan (1951) 2013 [179]	President, Chief Executive Officer, and Director, First Industrial Realty Trust, an owner and operator of industrial properties (2009 to present); Chairman of the Board (2005 to present) and Director (1999 to present), Starwood Hotels & Resorts, a hotel and leisure company
Robert J. Gerrard, Jr. (1952) 2012 [179]	Chairman of Compensation Committee and Director, Syniverse Holdings, Inc., a provider of wireless voice and data services for telecommunications companies (2008 to 2011); Advisory Board Member, Pipeline Crisis/Winning Strategies, a collaborative working to improve opportunities for young African Americans (1997 to present)
Karen N. Horn (1943) 2003 [179]	Limited Partner and Senior Managing Director, Brock Capital Group, an advisory and investment banking firm (2004 to present); Director, Eli Lilly and Company (1987 to present); Director, Simon Property Group (2004 to present); Director, Norfolk Southern (2008 to present)
Paul F. McBride (1956) 2013 [179]	Former Company Officer and Senior Vice President, Human Resources and Corporate Initiatives, Black & Decker Corporation (2004 to 2010)
Cecilia E. Rouse, Ph.D. (1963) 2012 [179]	Dean, Woodrow Wilson School (2012 to present); Professor and Researcher, Princeton University (1992 to present); Director, MDRC, a nonprofit education and social policy research organization (2011 to present); Member, National Academy of Education (2010 to present); Research Associate, National Bureau of Economic Research’s Labor Studies Program (2011 to present); Member, President’s Council of Economic Advisers (2009 to 2011); Chair of Committee on the Status of Minority Groups in the Economic Profession, American Economic Association (2012 to present)
John G. Schreiber (1946) 2001 [179]	Owner/President, Centaur Capital Partners, Inc., a real estate investment company (1991 to present); Cofounder and Partner, Blackstone Real Estate Advisors, L.P. (1992 to present); Director, General Growth Properties, Inc. (2010 to 2013); Director, Blackstone Mortgage Trust, a real estate financial company (2012 to present); Director and Chairman of the Board, Brixmor Property Group, Inc. (2013 to present); Director, Hilton Worldwide (2013 to present); Director, Hudson Pacific Properties (2014 to present)
Mark R. Tercek (1957) 2009 [179]	President and Chief Executive Officer, The Nature Conservancy (2008 to present)
*Each independent director serves until retirement, resignation, or election of a successor.
Inside Directors
Name (Year of Birth) Year Elected* [Number of T. Rowe Price Portfolios Overseen]	Principal Occupation(s) and Directorships of Public Companies and Other Investment Companies During the Past Five Years
Edward C. Bernard (1956) 2006 [179]	Director and Vice President, T. Rowe Price; Vice Chairman of the Board, Director, and Vice President, T. Rowe Price Group, Inc.; Chairman of the Board, Director, and President, T. Rowe Price Investment Services, Inc.; Chairman of the Board and Director, T. Rowe Price Retirement Plan Services, Inc., and T. Rowe Price Services, Inc.; Chairman of the Board, Chief Executive Officer, and Director, T. Rowe Price International; Chairman of the Board, Chief Executive Officer, Director, and President, T. Rowe Price Trust Company; Chairman of the Board, all funds
Brian C. Rogers, CFA, CIC (1955) 2006 [125]	Chief Investment Officer, Director, and Vice President, T. Rowe Price; Chairman of the Board, Chief Investment Officer, Director, and Vice President, T. Rowe Price Group, Inc.; Vice President, T. Rowe Price Trust Company
*Each inside director serves until retirement, resignation, or election of a successor.

Officers

Name (Year of Birth) Position Held With Institutional International Funds	Principal Occupation(s)
Ulle Adamson, CFA (1979) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Roy H. Adkins (1970) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Christopher D. Alderson (1962) President	Company’s Representative, Director, and Vice President, Price Hong Kong; Director and Vice President, Price Singapore and T. Rowe Price International; Vice President, T. Rowe Price Group, Inc.
Paulina Amieva (1981) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Malik S. Asif (1981) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, student, The University of Chicago Booth School of Business (to 2012); Investment Consultant–Middle East and North Africa Investment Team, International Finance Corporation–The World Bank Group (to 2010)
Harishankar Balkrishna (1983) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, intern, T. Rowe Price (to 2010)
Peter J. Bates, CFA (1974) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Oliver D.M. Bell, IMC (1969) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Head of Global Emerging Markets Research, Pictet Asset Management Ltd. (to 2011)
R. Scott Berg, CFA (1972) Executive Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Steven E. Boothe, CFA (1977) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Peter I. Botoucharov (1965) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Director, EMEA Macroeconomic Research and Strategy (to 2012); Independent Financial Advisor, Global Source (to 2010)
Tala Boulos (1984) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Vice President, CEEMEA Corporate Credit Research, Deutsche Bank (to 2013)
Darrell N. Braman (1963) Vice President	Vice President, Price Hong Kong, Price Singapore, T. Rowe Price, T. Rowe Price Group, Inc., T. Rowe Price International, T. Rowe Price Investment Services, Inc., and T. Rowe Price Services, Inc.
Carolyn Hoi Che Chu (1974) Vice President	Vice President, Price Hong Kong and T. Rowe Price Group, Inc.; formerly, Director, Bank of America Merrill Lynch and Co-head of credit and convertibles research team in Hong Kong (to 2010)
Archibald Ciganer Albeniz, CFA (1976) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Richard N. Clattenburg, CFA (1979) Executive Vice President	Vice President, Price Singapore, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price International
Michael J. Conelius, CFA (1964) Executive Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., T. Rowe Price International, and T. Rowe Price Trust Company
Richard de los Reyes (1975) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Laurent Delgrande (1971) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Portfolio Manager, Fidelity International Limited (to 2014)
Michael Della Vedova (1969) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Shawn T. Driscoll (1975) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Bridget A. Ebner (1970) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Mark J.T. Edwards (1957) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
David J. Eiswert, CFA (1972) Executive Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price International
Mark S. Finn, CFA, CPA (1963) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
John R. Gilner (1961) Chief Compliance Officer	Chief Compliance Officer and Vice President, T. Rowe Price; Vice President, T. Rowe Price Group, Inc., and T. Rowe Price Investment Services, Inc.
Paul D. Greene II (1978) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Benjamin Griffiths, CFA (1977) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Richard L. Hall (1979) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.; formerly, Financial Attaché, U.S. Department of Treasury, International Affairs Division (to 2012)
Steven C. Huber, CFA, FSA (1958) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Stefan Hubrich, Ph.D., CFA (1974) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Arif Husain, CFA (1972) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Director/Head of UK and Euro Fixed Income, AllianceBernstein (to 2013)
Dominic Janssens (1965) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Randal S. Jenneke (1971) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Senior Portfolio Manager, Australian Equities (to 2010)
Yoichiro Kai (1973) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Andrew J. Keirle (1974) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Paul J. Krug (1964) Vice President	Vice President, T. Rowe Price and T. Rowe Price Trust Company
Christopher J. Kushlis, CFA (1976) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Mark J. Lawrence (1970) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
David M. Lee, CFA (1962) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Patricia B. Lippert (1953) Secretary	Assistant Vice President, T. Rowe Price and T. Rowe Price Investment Services, Inc.
Christopher C. Loop, CFA (1966) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Anh Lu (1968) Vice President	Vice President, Price Hong Kong and T. Rowe Price Group, Inc.
Sebastien Mallet (1974) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Catherine D. Mathews (1963) Treasurer and Vice President	Vice President, T. Rowe Price and T. Rowe Price Trust Company
Jonathan H.W. Matthews, CFA (1975) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Raymond A. Mills, Ph.D., CFA (1960) Executive Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., T. Rowe Price International, and T. Rowe Price Trust Company
Sudhir Nanda, Ph.D., CFA (1959) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Joshua Nelson (1977) Executive Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Sridhar Nishtala (1975) Vice President	Vice President, Price Singapore and T. Rowe Price Group, Inc.
Jason Nogueira, CFA (1974) Executive Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
David Oestreicher (1967) Vice President	Director, Vice President, and Secretary, T. Rowe Price Investment Services, Inc., T. Rowe Price Retirement Plan Services, Inc., T. Rowe Price Services, Inc., and T. Rowe Price Trust Company; Chief Legal Officer, Vice President, and Secretary, T. Rowe Price Group, Inc.; Vice President and Secretary, T. Rowe Price and T. Rowe Price International; Vice President, Price Hong Kong and Price Singapore
Michael D. Oh, CFA (1974) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Kenneth A. Orchard (1975) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Vice President, Moody’s Investors Service (to 2010)
Oluwaseun A. Oyegunle, CFA (1984) Vice President	Vice President, T. Rowe Price International; formerly, student, The Wharton School, University of Pennsylvania (to 2013); Summer Investment Analyst, T. Rowe Price International (2012); Analyst, Asset & Resource Management Limited (to 2012); Analyst, Vetiva Capital Management Limited (to 2011)
Gonzalo Pángaro, CFA (1968) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Craig J. Pennington, CFA (1971) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International; formerly, Global Energy Analyst, Insight Investment (to 2010)
John W. Ratzesberger (1975) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company; formerly, North American Head of Listed Derivatives Operation, Morgan Stanley (to 2013)
Christopher J. Rothery (1963) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Federico Santilli, CFA (1974) Executive Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Sebastian Schrott (1977) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Deborah D. Seidel (1962) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., T. Rowe Price Investment Services, Inc., and T. Rowe Price Services, Inc.
Robert W. Sharps, CFA, CPA (1971) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
John C.A. Sherman (1969) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Robert W. Smith (1961) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Gabriel Solomon (1977) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Joshua K. Spencer, CFA (1973) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
David A. Stanley (1963) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Taymour R. Tamaddon, CFA (1976) Vice President	Vice President, T. Rowe Price and T. Rowe Price Group, Inc.
Ju Yen Tan (1972) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Dean Tenerelli (1964) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Eric L. Veiel, CFA (1972) Vice President	Vice President, T. Rowe Price, T. Rowe Price Group, Inc., and T. Rowe Price Trust Company
Verena Wachnitz, CFA (1978) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Christopher S. Whitehouse (1972) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
J. Howard Woodward, CFA (1974) Vice President	Vice President, T. Rowe Price Group, Inc., and T. Rowe Price International
Ernest C. Yeung, CFA (1979) Vice President	Vice President, Price Hong Kong and T. Rowe Price Group, Inc.
Jeffrey T. Zoller (1970) Vice President	Vice President, T. Rowe Price and T. Rowe Price Trust Company
Unless otherwise noted, officers have been employees of T. Rowe Price or T. Rowe Price International for at least 5 years.

Item 2. Code of Ethics.

The registrant has adopted a code of ethics, as defined in Item 2 of Form N-CSR, applicable to its principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions. A copy of this code of ethics is filed as an exhibit to this Form N-CSR. No substantive amendments were approved or waivers were granted to this code of ethics during the period covered by this report.

Item 3. Audit Committee Financial Expert.

The registrant’s Board of Directors/Trustees has determined that Mr. Bruce W. Duncan qualifies as an audit committee financial expert, as defined in Item 3 of Form N-CSR. Mr. Duncan is considered independent for purposes of Item 3 of Form N-CSR.

Item 4. Principal Accountant Fees and Services.

(a) – (d) Aggregate fees billed for the last two fiscal years for professional services rendered to, or on behalf of, the registrant by the registrant’s principal accountant were as follows:

Audit fees include amounts related to the audit of the registrant’s annual financial statements and services normally provided by the accountant in connection with statutory and regulatory filings. Audit-related fees include amounts reasonably related to the performance of the audit of the registrant’s financial statements and specifically include the issuance of a report on internal controls and, if applicable, agreed-upon procedures related to fund acquisitions. Tax fees include amounts related to services for tax compliance, tax planning, and tax advice. The nature of these services specifically includes the review of distribution calculations and the preparation of Federal, state, and excise tax returns. All other fees include the registrant’s pro-rata share of amounts for agreed-upon procedures in conjunction with service contract approvals by the registrant’s Board of Directors/Trustees.

(e)(1) The registrant’s audit committee has adopted a policy whereby audit and non-audit services performed by the registrant’s principal accountant for the registrant, its investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant require pre-approval in advance at regularly scheduled audit committee meetings. If such a service is required between regularly scheduled audit committee meetings, pre-approval may be authorized by one audit committee member with ratification at the next scheduled audit committee meeting. Waiver of pre-approval for audit or non-audit services requiring fees of a de minimis amount is not permitted.

(2) No services included in (b) – (d) above were approved pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

(f) Less than 50 percent of the hours expended on the principal accountant’s engagement to audit the registrant’s financial statements for the most recent fiscal year were attributed to work performed by persons other than the principal accountant’s full-time, permanent employees.

(g) The aggregate fees billed for the most recent fiscal year and the preceding fiscal year by the registrant’s principal accountant for non-audit services rendered to the registrant, its investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant were $2,366,000 and $2,159,000, respectively.

(h) All non-audit services rendered in (g) above were pre-approved by the registrant’s audit committee. Accordingly, these services were considered by the registrant’s audit committee in maintaining the principal accountant’s independence.

Item 5. Audit Committee of Listed Registrants.

Not applicable.

Item 6. Investments.

(a) Not applicable. The complete schedule of investments is included in Item 1 of this Form N-CSR.

(b) Not applicable.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable.

Item 8. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable.

Item 10. Submission of Matters to a Vote of Security Holders.

Not applicable.

Item 11. Controls and Procedures.

(a) The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported timely.

(b) The registrant’s principal executive officer and principal financial officer are aware of no change in the registrant’s internal control over financial reporting that occurred during the registrant’s second fiscal quarter covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 12. Exhibits.

(a)(1) The registrant’s code of ethics pursuant to Item 2 of Form N-CSR is attached.

(2) Separate certifications by the registrant's principal executive officer and principal financial officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached.

(3) Written solicitation to repurchase securities issued by closed-end companies: not applicable.

(b) A certification by the registrant's principal executive officer and principal financial officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(b) under the Investment Company Act of 1940, is attached.

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

T. Rowe Price Institutional International Funds, Inc.
 

	By	/s/ Edward C. Bernard
		Edward C. Bernard
		Principal Executive Officer
Date     December 15, 2015

 

     Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
 

	By	/s/ Edward C. Bernard
		Edward C. Bernard
		Principal Executive Officer
Date     December 15, 2015
	By	/s/ Catherine D. Mathews
		Catherine D. Mathews
		Principal Financial Officer
Date     December 15, 2015