Date: August 29, 2017
	FERROGLOBE PLC
	By:	/s/ Joseph Ragan
		Name:  Joseph Ragan
		Title:    Chief Financial Officer and Principal Accounting Officer (Principal Financial Officer)

     Advancing Materials Innovation  NASDAQ: GSM    Second Quarter 2017 

 Forward-Looking Statements and non-IFRS Financial Metrics  This presentation contains forward-looking statements within the meaning of Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended. Forward-looking statements are not historical facts but are based on certain assumptions of management and describe our future plans, strategies and expectations. Forward-looking statements can generally be identified by the use of forward-looking terminology, including, but not limited to, "may," “could,” “seek,” “guidance,” “predict,” “potential,” “likely,” "believe," "will," "expect," "anticipate," "estimate," "plan," "intend," "forecast," or variations of these terms and similar expressions, or the negative of these terms or similar expressions. Forward-looking statements contained in this presentation are based on information presently available to us and assumptions that we believe to be reasonable, but are inherently uncertain. As a result, our actual results, performance or achievements may differ materially from those expressed or implied by these forward-looking statements, which are not guarantees of future performance and involve known and unknown risks, uncertainties and other factors that are, in some cases, beyond our control. You are cautioned that all such statements involve risks and uncertainties, including without limitation, risks that the businesses of Globe Specialty Metals Inc. and Grupo FerroAtlántica (together, “we,” “us,” “Ferroglobe,” the “Company”) will not be integrated successfully or that we will not realize estimated cost savings, value of certain tax assets, synergies and growth, or that such benefits may take longer to realize than expected. Important factors that may cause actual results to differ include, but are limited to: (i) risks relating to unanticipated costs of integration, including operating costs, customer loss and business disruption being greater than expected; (ii) our organizational and governance structure; (iii) the ability to hire and retain key personnel; (iv) regional, national or global political, economic, business, competitive, market and regulatory conditions including, among others, changes in metals prices; (v) increases in the cost of raw materials or energy; (vi) competition in the metals and foundry industries; (vii) environmental and regulatory risks; (viii) ability to identify liabilities associated with acquired properties prior to their acquisition; (ix) ability to manage price and operational risks including industrial accidents and natural disasters; (x) ability to manage foreign operations; (xi) changes in technology; (xii) ability to acquire or renew permits and approvals; (xiii) changes in legislation or governmental regulations affecting Ferroglobe; (xiv) conditions in the credit markets; (xv) risks associated with assumptions made in connection with critical accounting estimates and legal proceedings; (xvi) Ferroglobe's international operations, which are subject to the risks of currency fluctuations and foreign exchange controls; and (xvii) the potential of international unrest, economic downturn or effects of currencies, tax assessments, tax adjustments, anticipated tax rates, raw material costs or availability or other regulatory compliance costs. The foregoing list is not exhaustive. You should carefully consider the foregoing factors and the other risks and uncertainties that affect our business, including those described in the “Risk Factors” section of our Registration Statement on Form F-1, Annual Reports on Form 20-F, Current Reports on Form 6-K and other documents we file from time to time with the United States Securities and Exchange Commission. We do not give any assurance (1) that we will achieve our expectations or (2) concerning any result or the timing thereof, in each case, with respect to any regulatory action, administrative proceedings, government investigations, litigation, warning letters, consent decree, cost reductions, business strategies, earnings or revenue trends or future financial results. Forward- looking financial information and other metrics presented herein represent our key goals and are not intended as guidance or projections for the periods presented herein or any future periods. We do not undertake or assume any obligation to update publicly any of the forward- looking statements in this presentation to reflect actual results, new information or future events, changes in assumptions or changes in other factors affecting forward-looking statements. If we update one or more forward-looking statements, no inference should be drawn that we will make additional updates with respect to those or other forward-looking statements. We caution you not to place undue reliance on any forward-looking statements, which are made only as of the date of this presentation.EBITDA, adjusted EBITDA, adjusted diluted profit (loss) per ordinary share and adjusted profit (loss) attributable to the parent are, we believe, pertinent non-IFRS financial metrics that Ferroglobe utilizes to measure its success. Ferroglobe has included these financial metrics to provide supplemental measures of its performance. The Company believes these metrics are important because they eliminate items that have less bearing on the Company’s current and future operating performance and highlight trends in its core business that may not otherwise be apparent when relying solely on IFRS financial measures. For additional information, including a reconciliation of the differences between the non-IFRS financial measures and the comparable IFRS financial measures, refer to the press release dated August 30, 2017 accompanying this presentation, which is incorporated by reference herein. 

 Table of Contents  Q2 2017 OverviewSelected Financial Highlights 

 Q2 2017 Overview     Pedro Larrea, Chief Executive Officer 

 Q2 2017 results exceeded expectations; first net profit since merger    Volumes stabilizing in core products  (Volume change vs Q1 2017)SiM +9.4%Si alloys -5.9%Mn alloys +1.1%    Capturing benefits of improved market environment  (ASP increase vs Q1 2017)SiM +6.3%Si alloys +7.7%Mn alloys +0.8%  Optimized business platform  Successful commercial strategyStreamlining of best practicesDiversified product portfolio Actions underway to optimize production facilities       Sales +8% vs Q1 2017  Adjusted EBITDA +42 % vs Q1 2017  Adjusted EBITDA margin improvement of 250 bps to 10.3%  Q2 net profit $1.0 million – adjusted net profit $6.0 million*     *Adjusted net profit attributable to the parent  

 Source: Company information  Antidumping and Countervailing Duties   Sale of Spanish Hydro-Electric Assets   Accounts Receivable Securitization  Update on corporate matters    The U.S. Department of Commerce has issued a preliminary determination imposing countervailing duties ranging from 3.69% to 120% on silicon metal imports from Australia, Brazil and Kazakhstan. The Department of Commerce is expected to make preliminary determinations in the antidumping cases on October 4, 2017Canadian authority determined margins of dumping ranging from 4.2% to 135.3%. Final determination of the Agency’s investigations is expected to be issued on October 3, 2017. The Canadian International Trade Tribunal is expected to issue final findings on November 2, 2017  Announced on July 26, 2017 that Ferroglobe had not received the required regulatory approvals to complete divestitureIntend to continue to explore all options, including further efforts to gain formal approval for the divestiture of these non-core assets in order to capture their full value   Entered into $250 million accounts receivable securitization on July 31, to obtain financing in connection with receivables generated in U.S., Canada, Spain and France Provides several benefits, including risk mitigation, liquidity maximization and the ability to replace multiple factoring arrangements with one consolidated, centrally-managed program 

 Diversified portfolio provides exposure to improved pricing across key products  Silicon-BasedAlloys26%  Mn-Based Alloys20%  Other11%  Aluminum  Silicones  Solar  Foundry  Specialty Steel  Steel  Qtr / Qtr Revenue Growth by Product  Other  Source: Company informationEnd market data reflects FY 2016 sales  Business benefits from a diversified portfolio, now generating almost equal earnings from three main product segments   Revenue Contribution by Product and Market (Q2 2017)  1 

 Q2 2017 revenues up 8% vs previous quarter  Improvement in prices and volumes for silicon metal as well as prices for silicon-based alloys are the key drivers in the quarter 

 Silicon metal snapshot   Volume Trends  Sequential Quarter Product EBITDA Contribution ($m)  Commentary  Silicon metal EBITDA more than doubled due to higher realized prices and increased volumes from new orders, especially in North AmericaSilicon metal prices:Continue to increase in North America as a result of the preliminary rulings in ongoing trade cases Upward trend in China: +500 $/t since mid-JulyFirst signs of European recovery during AugustVolumes were up 9.4% in Q2 2017 vs Q1 2017  Pricing Trends 

 Silicon-based alloys snapshot   Volume Trends  Commentary  Silicon-based alloys cost increase attributable to technical issues at Bridgeport facility and the conversion of one furnace at SabonFerrosilicon prices remain at historically strong levels and gained traction during August, especially in North America. Actively looking to fill up order book to take advantage of current levelsVolumes were down 5.9%   Sequential Quarter Product EBITDA Contribution ($m)  Pricing Trends 

 Manganese-based alloys snapshot  Commentary  Manganese-based alloys faced with pricing pressure, offset with lower manganese ore costs from inventoryMarket prices came down in Q2 2017 from historical highs. Prices are gaining momentum again in Q3 2017Volumes were up slightly compared to Q1 2017 – with plants running at full capacity   Volume Trends  Pricing Trends  Sequential Quarter Product EBITDA Contribution ($m) 

 Pricing momentum continues to drive performance   Ferroglobe Actions Leading to Results  Commercial strategy has captured the recovery of the market Continue to optimize business platform: Actions underway to optimize production facilities: minimizing the impact of idled facilities: streamlining production plans to increase utilization rates; including the conversion of furnaces to capture market opportunitiesStreamlining of best practicesDiversified product portfolio   Sequential Quarter EBITDA Contribution ($m) 

 Reported EBITDA of $36.8 million. Adjusted EBITDA of $43.9 million for the quarter +42% vs reported EBITDA of $30.9 million in Q1 2017 Net profit of $1.0 million, or $0.02 per share on a fully diluted basis. Adjusted net profit attributable to the parent of $6.0 million, or $0.05 per share on a fully diluted basis.Working capital increased by $35.4 million during the quarter, primarily a result of the recovery cycle - total working capital increase year-to-date of $20.3 millionOperating cash flow of $20.1 million and free cash flow of $5.8 millionBalance sheet strength maintained:Net debt of $435 million at end of Q2; up compared to $407 at the end of Q1Liquidity of $320 million at end of Q2 Net Debt to EBITDA metrics have improved dramatically    Conservative capital structure — company positioned to pursue growth opportunitiesSuccessful refinancing has simplified the debt structure and improved the solvency with regard to covenantsFocus on deleveraging the balance sheetLeverage target of below 2xContinue to focus on managing cost structure through technical performance, portfolio optimization and streamlining of SG&ABusiness decisions, including M&A and CapEx, are made with a focus on financial metrics – targeting immediately accretive transactions  Delivering value for shareholders and positioning for the long term   Q2 2017 Performance  Remain Focused on Delivering Long-Term Value 

    Selected Financial Highlights  Joe Ragan, Chief Financial Officer 

 Q2 2017 key performance indicators and overview  1 Free cash flow defined as “Net cash provided by operating activities” minus “Payments for property, plant and equipment.”Source: Company information  Key performance indicators  Q2 2017  Q1 2017  FY 2016  Sales ($m)  425.8  396.0  1,555.7  Operating Profit ($m)  10.4  3.7  -375.6  Profit Attributable to the Parent ($m)  2.9  -6.6  -338.4  Adjusted EBITDA ($m)  43.9  30.9  70.4  Adjusted EBITDA Margin  10.3%  7.8%  4.5%  Working Capital ($m)  388.7  353.3  368.4  Free Cash Flow1 ($m)  5.8  -  43.4  Notes 

 Balance sheet summary  ($mm)  Q2 20171  Q1 20171  12/31/2016  Total Assets  2,046  2,012  2,019  Net Debt2  435  407  405  Book Equity   907  903  892          Net Debt2 / Total Assets  21%  20%  20%  Net Debt2 / Capital3   32%  31%  31%  Financial results are unauditedNet Debt includes finance lease obligationsCapital is calculated as book equity plus net debt  Notes 

 Debt evolution ($m)  Quarterly debt evolution 

 Working capital evolution ($m)  +$26m Inventory+$10m A/R 

   Concluding remarks   Improved market environment: recovery trend continues across key products  Business well-positioned: cost structure and commercial strategy  Positive outlook for remainder of 2017  

    Q&A  

 Advancing Materials Innovation  NASDAQ: GSM      Second Quarter 2017