OPPENHEIMER INTERNATIONAL GROWTH FUND Q4 2015 COMMENTARY | AS OF 12/31/15 Morningstar Rating™ Ticker Symbol Morningstar Category Class Y shares rated 5 stars overall by Morningstar among 323 Foreign Large Growth funds for the 3-, 5-and 10-year periods ended 12/31/15, based on risk-adjusted performance.¹ OIGAX (Class A shares) OIGYX (Class Y shares) OIGIX (Class I shares) Foreign Large Growth Morningstar Analyst Rating: 2 Oppenheimer International Growth Fund Class A, Y and I Shares Average Annual Total Returns as of 12/31/15 4Q15 Portfolio Managers George R. Evans, CFA (Since 3/96) Robert B. Dunphy, CFA (Since 3/12) Average Industry Experience 21 years Client Portfolio Manager Alice Fricke, CFA Not FDIC Insured May Lose Value Not Bank Guaranteed Oppenheimer International Grow th Fund (Class A shares w ithout sales charge) Oppenheimer International Grow th Fund (Class A shares w ith sales charge) 1-Year 3-Year 5-Year 10-Year or Since Inception 5.31% 3.16% 6.19% 6.09% 6.11% -0.75 -2.77 4.11 4.84 5.48 Oppenheimer International Grow th Fund (Class Y shares)* 5.39 3.44 6.47 6.44 6.54 Oppenheimer International Grow th Fund (Class I shares)** 5.43 3.63 6.68 — 7.65 MSCI AC World ex-U.S. Index 3 3.24 -5.66 1.50 1.06 2.92 3.80 3.95 12th #35/288 2nd #3/189 Morningstar Foreign Large Grow th 4.66 0.95 4.94 Funds Category Average4 Morningstar Percentile Rank and Ranking: 25th 27th Foreign Large Grow th Funds Category 5 — #90/361 #87/323 (Class A shares based on total return) Returns for periods less than one year are cumulative and not annualized. Annual Expense Ratios: Class A shares: Gross: 1.14% Class Y shares: Gross: 0.89% Class I shares: Gross: 0.70% *Class Y shares inception date is 9/7/05. **Class I shares inception date is 3/29/12. The performance data quoted represents past performance, which does not guarantee future results. The investment return and principal value of an investment in the Fund will fluctuate so that an investor’s shares, when redeemed, may be worth more or less than the original cost. Current performance and expense ratios may be lower or higher than the data quoted. For performance data current to the most recent month-end, visit oppenheimerfunds.com or call 1.800.CALL OPP (225.5677). Fund returns include changes in net asset value with dividends and capital gains reinvested. Class A shares include the 5.75% maximum sales charge where indicated. Class Y and Class I shares are not subject to a sales charge. Returns do not consider capital gains or income taxes on an individual’s investment. Generally, I shares are only available to institutional investors and can only be purchased with a $5 million initial investment. Effective January 25, 2016, the Class I minimum initial investment is reduced to $1 million per account. OPPENHEIMER INTERNATIONAL GROWTH FUND Q4 2015 COMMENTARY | AS OF 12/31/15 Information Technology sector on the back of our overweight position within it, and in the Materials sector due to stock selection. There were only two sectors in which the Fund underperformed the benchmark. We underperformed in the Consumer Discretionary sector because of our luxury stocks, which declined on renewed concerns over China. We remain very positive on our luxury holdings; we believe the concerns over Chinese consumption are overblown in the longer term and we believe that the Chinese are not the only consumers of luxury goods. We also underperformed slightly in the Industrials sector due to stock selection. MARKET REVIEW The world’s equity markets opened the fourth quarter with a rebound from the significant correction they experienced over the summer. But it was short lived. Investors continued to worry about China, specifically the effect it might have on the rest of the world as it grows more slowly and rebalances that growth away from infrastructure and toward consumption. The Mideast refugee crisis produced headlines, both good and bad, and caused some investors concern about the outlook for Europe. Finally, in December, the U.S. Federal Reserve enacted their long-awaited rate rise, to mixed reviews. While equity markets ended the quarter higher than they opened it, they produced negative returns for the full year. Within this negative sentiment environment, our Fund continued to outperform, supported by our emphasis on secular growth trends and the overall quality of our companies. Our car automation and data deluge themes were particularly supportive and many of our medical product companies performed well. Our structural underweight to commodities helped as well. Our luxury theme was a detractor this quarter. With regard to countries, we remind investors that we are bottom-up investors in companies and our geographic exposure is purely the result of our stock selection. The Fund outperformed the benchmark most in Switzerland, Germany and France as our stocks outperformed others there. We underperformed in Japan, where we are underweight, in Thailand, due to the retailer that we own there, and very slightly in Australia, where we are underweight. INDIVIDUAL HOLDINGS DRIVING RESULTS As we look ahead, we expect that the adjustments necessitated by China’s rebalancing will continue to cause market volatility. However we are fairly sanguine on the outlook for overall world growth, albeit slow. In our opinion, this economic cycle is likely to be very long, with slightly higher—but still relatively low— interest rates and subdued inflation. In this environment, properly managed growth companies can perform well and support higher than average valuations. The U.S. has largely recovered. The outlook for European companies is relatively positive—despite the muted macroeconomy—due to their earnings momentum, improved operating leverage, and the liquidity the European Central Bank continues to inject into the system. That said, we simply do not try to right-size the Fund for any particular macroeconomic environment. Our discipline is long-term investment in companies that can monetize secular growth trends to create wealth for their shareholders. The top three positive performance contributors were Infineon Technologies AG, Temenos Group AG and Syngenta AG. Infineon Technologies AG is a German semiconductor manufacturer whose chips are widely used in three main areas: power management and control, automobiles, and chip cards and security. In our opinion, these areas will drive secular demand for chips for some time, and Infineon is one of the best placed companies to benefit from this growth in demand and pricing power. During the quarter, the stock price rose when the company announced earnings that were ahead of analyst expectations. Temenos Group AG is a Swiss company that is the only provider of software dedicated to banking. The banking industry is one of the largest spenders on technology. This is not surprising given the complex regulatory environment in which they operate and the constant demand from their clients for new, technologically advanced products. (Think of depositing bank checks through your mobile phone as just one example.) In the past, most banks have developed proprietary technology in house. However, this is becoming prohibitively expensive. This year Nordea, one of the largest Scandinavian banks, selected Temenos to replace its core banking system software. In our opinion, if Temenos executes this contract successfully, it will significantly increase its addressable market. As we have often said before, volatility is our friend. We understand that it is uncomfortable for investors so we dampen it in the Fund by investing in a large number of companies in relatively equal amounts. But down markets give us the opportunity to buy stocks at prices that we could not get when sentiment is optimistic. As the market has pulled back, we have bought more shares in companies we already own and taken the opportunity to acquire some new ones that we have coveted for some time. PERFORMANCE REVIEW Syngenta AG is a Swiss producer of crop protection chemicals and seeds. The share price has been relatively volatile this year because the company is seen as a potential target in a sector that is beginning to consolidate. In our opinion, Syngenta’s crop protection business is very attractive due to the demographic trends that we expect to support demand over the long term and in terms of its pipeline and the geographical areas in which it is dominant. Furthermore, there is room for better management and restructuring within the company that could raise its value. Oppenheimer International Growth Fund (Class A shares without sales charge) outperformed its benchmark MSCI AC World ex-U.S. Index significantly in the fourth quarter, rising 5.31% versus the 3.24% rise in the benchmark. For the full year, the Fund (Class A shares without sales charge) returned 3.16%, outperforming the benchmark, which declined 5.66%, by over 800 basis points. SECTOR AND COUNTRY ANALYSIS During the quarter, the Fund outperformed the benchmark most in the Health Care sector due to stock selection, in the 2 OPPENHEIMER INTERNATIONAL GROWTH FUND Q4 2015 COMMENTARY | AS OF 12/31/15 INDIVIDUAL HOLDINGS DRIVING RESULTS (CONT.) The bottom three performance contributors were Dollarama, Inc., Hudson’s Bay Co. and CP All Public Co. Ltd. Dollarama, Inc. is a Canadian discount retailer that is much like Dollar Tree and Dollar General in the U.S. The economy in Canada is suffering with the fall in oil prices and Dollarama is benefitting as shoppers migrate down the affordability scale. (We saw the same effect in the U.S. during the financial crisis, when companies like Walmart and McDonald’s gained share.) After reaching record highs, the stock suffered a pullback in the quarter when the company announced expansion plans that were below analysts’ heightened expectations. We remain positive on the outlook for the company’s growth. Hudson’s Bay Co. is a Canadian retailer whose portfolio includes its namesake chain in Canada, Saks Fifth Avenue and Lord & Taylor in the U.S., and Galeria Kaufhof, a highend German retailer that it recently acquired. In most cases, Hudson’s Bay also owns the buildings in which its stores operate, and the land upon which they stand. The company is monetizing these real estate assets to cover the cost of upgrading and expanding its operations. Its goal is to widen margins by increasing sales per square foot, and by taking better advantage of scale. To accomplish this, the company is renovating its 10 largest stores by sales volume for each retail chain and investing in digital infrastructure across its entire fleet of stores. After reaching record highs, the stock pulled back significantly when the company announced disappointing earnings for the third quarter when it, and many other retailers, such as Nordstrom’s suffered from weak demand. CP All Public Co. Ltd. is the exclusive operator of more than 8,500 7-Eleven stores in Thailand. It has more than a 50% share of the convenience store format there and is expanding into what is still a relatively fragmented informal retail market by adding roughly 700 more outlets annually. The company also owns the Costco-style Siam Makro chain, which has 92 outlets, averaging 30,000 square feet each, and produces an exceptionally high 30% return on capital employed. After reaching record highs, the stock pulled back during the quarter. In our opinion, over the longer term CP All’s modern retail formats will continue to draw customers away from more informal competitors. SPECIAL RISKS Foreign investments may be volatile and involve additional expenses and special risks, including currency fluctuations, foreign taxes, regulatory and geopolitical risks. Emerging and developing market investments may be especially volatile. Eurozone investments may be subject to volatility and liquidity issues. Investments in securities of growth companies may be volatile. Mid-sized company stock is typically more volatile than that of larger company stock. It may take a substantial period of time to realize a gain on an investment in a mid-sized company, if any gain is realized at all. Diversification does not guarantee profit or protect against loss. 3 OPPENHEIMER INTERNATIONAL GROWTH FUND Q4 2015 COMMENTARY | AS OF 12/31/15 Top Ten Holdings by Issuer6 Top & Bottom Contributors to Return 6 4th Quarter 2015 (as of 12/31/15) 4th Quarter 2015 (as of 12/31/15) Top Five Continental AG 1.78% Infineon Technologies AG 1.73 Infineon Technologies AG 0.41% Dollarama, Inc. 1.59 Temenos Group AG 0.25 Novo Nordisk AS 1.59 Syngenta AG 0.25 Nippon Telegraph & Telephone 1.59 Continental AG 0.24 Carnival Corp. 1.51 HOYA CORPORATION 0.23 Valeo SA 1.49 Aalberts Industries NV 1.38 Dollarama, Inc. -0.26% Vodafone Group plc 1.37 Hudson's Bay Co. -0.23 Heineken NV 1.35 CP All Public Co. Ltd. -0.17 Total 15.38 Burberry Group plc -0.16 Rolls-Royce Holdings plc -0.15 Bottom Five Sector Attribution Analysis6 4th Quarter 2015 (as of 12/31/15) International Grow th Fund Health Care Information Technology Materials Telecommunication Services Energy Financials Utilities Consumer Staples Industrials Consumer Discretionary Other Cash Total Average Weight 11.81% 15.68 5.06 6.03 1.25 4.07 0.00 10.88 20.41 23.21 0.00 1.60 100.00 Return 11.67% 9.65 11.59 10.94 6.79 3.49 0.00 3.64 2.80 1.53 0.00 0.03 5.67 MSCI AC World ex-U.S. Index Contribution Average to Return Weight 1.27% 9.29% 1.42 7.78 0.56 6.64 0.63 5.19 0.09 6.37 0.16 27.18 0.00 3.49 0.45 10.77 0.60 11.21 0.49 12.07 0.00 0.01 0.00 0.00 5.67 100.00 Return 3.14% 8.19 0.34 2.30 -0.50 2.46 1.37 3.66 4.50 4.45 -0.08 0.00 3.17 Contribution to Return 0.30% 0.55 0.05 0.12 0.03 0.69 0.05 0.38 0.49 0.51 0.00 0.00 3.17 Attribution Analysis Sector Allocation 0.06% 0.38 0.05 0.00 0.16 0.16 0.07 0.01 0.12 0.15 0.01 -0.02 1.15 Stock Selection 0.91% 0.22 0.54 0.50 0.08 0.04 0.00 0.03 -0.33 -0.65 0.00 0.00 1.35 Total Effect 0.98% 0.60 0.59 0.50 0.25 0.21 0.07 0.04 -0.21 -0.51 0.01 -0.02 2.50 The mention of specific sectors is subject to change and does not constitute a recommendation on behalf of the Fund or OppenheimerFunds, Inc. Attribution m ethodology notes: The attribution provides analysis of the effects of several portfolio management decisions, including allocation and security selection. Securities classified as "Other" may include non-equity securities, derivatives and securities for w hich a sector classification may not be appropriate. The Fund is actively managed and portfolio holdings are subject to change in accordance w ith the prospectus. The percentage w eights represented for the Fund are dollar w eighted based on market value. Performance numbers include all share classes and may not tie to actual Fund returns. Contribution to Return measures the performance impact from portfolio holdings over a defined time period. It takes into account both w eight and performance of the portfolio holdings. Contribution to Return is calculated at security level and reported at sector/strategy level. Past perform ance does not guarantee future results. 4 OPPENHEIMER INTERNATIONAL GROWTH FUND Q4 2015 COMMENTARY | AS OF 12/31/15 DISCLOSURES Past performance does not guarantee future results. 1. For each fund with at least a three-year history, Morningstar calculates ratings based on a proprietary risk-adjusted return score that accounts for variation in a fund’s monthly performance (including the effects of sales charges, loads and redemption fees), placing more emphasis on downward variations and rewarding consistency. The top 10% of funds in each category receive 5 stars, the next 22.5% 4 stars, the next 35% 3 stars, the next 22.5% 2 stars and the bottom 10% 1 star with some adjustments for multiple share class portfolios. The Overall Morningstar Rating is derived from a weighted average of the 3- , 5- and 10-year ratings (where applicable). For the 3-, 5- and 10-year periods, respectively, the Fund was rated 4, 5 and 5 stars among 323, 288 and 189 funds in the Foreign Large Growth category for the time period ended 12/31/15. Morningstar rating is for Class Y shares and rating may include more than one share class of funds in the category, including other share classes of this Fund. Different share classes may have different expenses, eligibility requirements, performance characteristics and Morningstar ratings. 2. The Morningstar Analyst Rating is not a credit or risk rating but a subjective evaluation performed by the analysts of Morningstar, Inc. (Mstar). Mstar evaluates funds based on five key pillars (process, performance, people, parent and price). Mstar's analysts use this evaluation to identify funds they believe are more likely to outperform over the long term on a risk-adjusted basis. Analysts consider quantitative and qualitative factors and the weightings of each pillar may vary. The Analyst Rating reflects overall assessment and is overseen by Morningstar's Analyst Rating Committee. The analyst rating scale is five-tiered, with three positive ratings (Gold, Silver, Bronze), a Neutral rating and a Negative rating, with Gold being the highest rating and Negative being the lowest rating. The Mstar Analyst Ratings should not be used as the sole basis in evaluating a mutual fund and are based on Mstar’s current expectations about future events. Mstar does not represent ratings as a guarantee. Analyst Ratings involve unknown risks and uncertainties which may cause Mstar’s expectations not to occur or to differ significantly. 3. The MSCI AC World ex-U.S. Index is designed to measure the equity market performance of developed and emerging markets and excludes the U.S. The index is unmanaged and cannot be purchased directly by investors. Index performance is shown for illustrative purposes only and does not predict or depict the performance of the Fund. 4. Source: Morningstar, Inc., 12/31/15. The Morningstar Foreign Large Growth Funds Category Average is the average return of all funds within the investment category as defined by Morningstar. Returns are adjusted for the reinvestment of capital gains distributions and income dividends, without considering sales charges. Performance is shown for illustrative purposes only and does not predict or depict the performance of the fund. 5. Source: ©2015 Morningstar, Inc., 12/31/15. Morningstar ranking is for Class A shares and ranking may include more than one share class of funds in the category, including other share classes of this Fund. Ranking is based on total return as of 12/31/15, without considering sales charges. Different share classes may have different expenses and performance characteristics. Fund rankings are subject to change monthly. The fund’s total-return percentile rank is relative to all funds that are in the Foreign Large Growth Funds Category. The highest (or most favorable) percentile rank is 1 and the lowest (or least favorable) percentile rank is 100. The top performing fund in a category will always receive a rank of 1. 6. Holdings, sector and country allocations are subject to change, do not constitute recommendations by OppenheimerFunds, and are dollar-weighted based on assets. Top holdings excludes cash and cash equivalents. Attribution analysis is a process used to analyze the absolute return (often called contribution) and the excess return (often called relative return) between a portfolio and its benchmark. The total effect measures both the allocation effect to a sector as well as stock selection within a sector. Holdings are subject to change, and are dollar weighted based on total net assets. Negative weightings may result from the use of leverage. Leverage involves the use of various financial instruments or borrowed capital in an attempt to increase investment return. Leverage risks include potential for higher volatility, greater decline of the fund’s net asset value and fluctuations of dividends and distributions paid by the fund. Shares of Oppenheimer funds are not deposits or obligations of any bank, are not guaranteed by any bank, are not insured by the FDIC or any other agency, and involve investment risks, including the possible loss of the principal amount invested. These views represent the opinions of OppenheimerFunds, Inc. and are not intended as investment advice or to predict or depict the performance of any investment. These views are as of the close of business on December 31, 2015, and are subject to change based on subsequent developments. The Fund’s portfolio and strategies are subject to change. Total returns do not show the effects of income taxes on an individual’s investment. Taxes may reduce an investor’s actual investment returns on income or gains paid by the Fund or any gains realized if the investor sells his/her shares. Before investing in any of the Oppenheimer funds, investors should carefully consider a fund’s investment objectives, risks, charges, and expenses. Fund prospectuses and summary prospectuses contain this and other information about the funds, and may be obtained by asking your financial advisor, visiting oppenheimerfunds.com, or calling 1.800.CALL OPP (225.5677). Read prospectuses and summary prospectuses carefully before investing. Oppenheimer funds are distributed by OppenheimerFunds Distributor, Inc. 225 Liberty Street, New York, NY 10281-1008 © 2016 OppenheimerFunds Distributor, Inc. All rights reserved. CO0825.001.1215 January 15, 2016 5