Thank you, Tiffany and good afternoon everyone. Welcome to the Nanometrics fourth quarter 2018 financial results conference call. Speaking on today's call are Dr. Pierre Lesaicherre, President and Chief Executive Officer; and Greg Swyt, VP of Finance and our Principal Financial Officer. Shortly, Pierre will provide a recap of the quarter and year and our perspective looking forward. Then Greg will discuss our financial results in more detail, after which, we will open up the call for Q&A. The press release detailing our financial results was distributed over the wire services shortly after 1:00 P.M. Pacific this afternoon. The press release and supplemental financial information are also available on our website at www.nanometrics.com. Today's conference call contains certain forward-looking statements, including, but not limited to, financial performance and results, including revenue, margins, operating expenses, profitability, earnings per share and the benefits that Nanometrics expect, it will realize from its acquisition of 4D Technology Corporation. Such statements may be identified by the use of words like believe, expect and similar expressions that look toward future events or performance. Although Nanometrics believes that the expectations reflected in the forward-looking statements are reasonable, actual results could differ materially from the expectations due to a variety of factors, including general economic conditions, changes in timing and levels of industry spending, the adoption and competitiveness of our products, industry adoption of new technology and manufacturing processes, customer demand, shifts in timing of orders or product shipments, changes in product mix, our ability to successfully realize operating efficiencies and the additional risk factors and cautionary statements set forth in the company's Form 10-K on file for fiscal 2017. Nanometrics disclaims any obligation to update information contained in any forward-looking statement. During today's call, we will also refer to financial measures not calculated according to Generally Accepted Accounting Principles. Please refer to today's press release for an explanation of our reasons for using such non-GAAP measures as well as tables reconciling these measures to our GAAP results. I will now turn over the call to Pierre.