Exhibit 99.1

Nanometrics Reports Second Quarter 2017 Financial Results

Record Revenues Driven by Strength in Memory; Gross Margin Improves over 400bp from the First Quarter

MILPITAS, Calif., August 1, 2017 — Nanometrics Incorporated (NASDAQ: NANO), a leading provider of advanced process control systems, today announced financial results for its fiscal second quarter, which ended July 1, 2017.

Q2 2017 Highlights:

A reconciliation between GAAP operating results and non-GAAP operating results is provided following the financial statements that are part of this release and on the investor page of Nanometrics' website. Non-GAAP results exclude the impact of amortization of acquired intangibles, restructuring, executive search costs and certain discrete tax items.

“The second quarter was very notable for Nanometrics in a number of ways,” commented Dr. Timothy J. Stultz, president and chief executive officer of Nanometrics. “We achieved a new quarterly revenue record, led by strong contributions and continued strength in our 3D-NAND and DRAM memory businesses, and as expected, gross margins increased from the first quarter, are trending up, and are on track to return to our target model ranges in the second half of the year. The Atlas III launch has turned out to be the most successful new product introduction in Nanometrics’ history, and comprised over half of our Automated Metrology tool sales in the second quarter, with expectations that the Atlas III will also comprise over half of our Automated Metrology tool sales for the full year 2017. The adoption rate of this new product has exceeded our earlier expectations, rapidly becoming the OCD tool of choice with our major customers across all key device types.

“During the quarter, we also expanded our software product offerings with the release of the SpectraProbe, a novel model-less analytics software product that increases the capability and utility of our OCD platforms, and the next generation of our NanoDiffract OCD modeling software, further strengthening our leadership in OCD metrology. On the competitive front, we were successful in winning 3D-NAND business at a new domestic China fab with significant future revenue potential. We also expanded our Thin-Film Metrology market position in memory, with competitive wins at multiple customer sites for both DRAM and 3D-NAND process control.

“As we look at the full year, our current outlook is consistent with our prior forecasts for meaningful revenue growth in the second half of the year. 3D-NAND spending is looking to be even stronger than we previously expected, with our DRAM outlook also improving since the beginning of the year. Second-half strength in the memory markets will be somewhat moderated by a slightly front-half weighted year for Foundry. In total, we continue to expect second-half revenues will be up 10% from the first half, back-end loaded toward the fourth quarter, with continued expectations for full-year revenue growth outpacing both industry spending and our year-over-year growth in 2016.”

Second Quarter 2017 Summary

Revenues for the second quarter of 2017 were $64.4 million, up 8.6% from $59.3 million in the first quarter of 2017, and up 15.5% from $55.8 million in the second quarter of 2016. On a GAAP basis, gross margin was 52.2%, compared to 48.0% in the prior quarter and 51.0% in the year-ago period. Operating income was $10.7 million, compared to $5.5 million in the prior quarter and $7.3 million in the year-ago period. Net income was $8.3 million or $0.32 per diluted share, compared to $5.4 million or $0.21 per diluted share in the prior quarter and $6.0 million or $0.24 per diluted share in the second quarter of 2016.

On a non-GAAP basis, which excludes amortization of acquired intangible assets and restructuring, gross margin was 52.4%, compared to 48.3% in the prior quarter and 51.8% in the year-ago period. Non-GAAP operating income was $11.1 million, compared to $5.8 million in the prior quarter and $7.8 million in the second quarter of 2016. Non-GAAP net income, which adjusts for amortization of intangible assets, restructuring, executive search costs and certain discrete tax items, was $7.8 million or $0.30 per diluted share, compared to $4.8 million or $0.19 per diluted share in the prior quarter and $6.5 million or $0.26 per diluted share in the second quarter of 2016.

Business Outlook

Management expects third-quarter 2017 revenues in the range of $60 to $64 million. Gross margin is expected to be in the range of 53% to 54% on both a GAAP and non-GAAP basis. Management expects third-quarter operating expenses to range between $23.0 million and $23.5 million on both a GAAP and non-GAAP basis, and earnings in the range of $0.22 to $0.31 per diluted share on both a GAAP and non-GAAP basis.

Conference Call Details

A conference call to discuss second quarter 2017 results will be held today at 4:30 p.m. EDT (1:30 p.m. PDT). To participate in the conference call, the dial-in numbers are (877) 374-4041 for domestic callers and (253) 237-1156 for international callers. The conference ID is 51893339. A live and recorded webcast and supplemental financial information will be made available on the investor page of the Nanometrics website at www.nanometrics.com.

Use of Non-GAAP Financial Information

The non-GAAP gross profit, gross margin, operating income, operating income margin, net income, net income per share, which exclude certain expenses, charges and special items, and free cash flow, were not prepared in accordance with U.S. Generally Accepted Accounting Principles (GAAP). Management uses non-GAAP financial results, which exclude amortization of acquired intangibles assets, restructuring charges, and certain discrete tax items, to evaluate the company’s ongoing performance and to enable comparison to other periods that did not include these items. The company believes the presentation of non-GAAP results is useful to investors for analyzing ongoing business trends, comparing performance to prior periods, and enhancing the investor’s ability to view the company’s results from management’s perspective; however, investors are cautioned that other companies may calculate these measures differently than Nanometrics does, which would limit the usefulness of these financial measures. A table presenting a reconciliation of GAAP results to non-GAAP results is included at the end of this press release and is available on the investor page of the Nanometrics website at www.nanometrics.com.

About Nanometrics

Nanometrics is a leading provider of advanced, high-performance process control metrology and inspection systems used primarily in the fabrication of semiconductors and other solid-state devices, including sensors, optoelectronic devices, high-brightness LEDs, discretes and data storage components. Nanometrics’ automated and integrated metrology systems measure critical dimensions, device structures, topography and various thin film properties, including three-dimensional features and film thickness, as well as optical, electrical and material properties. The company’s process control solutions are deployed throughout the fabrication process, from front-end-of-line substrate manufacturing, to high-volume production of semiconductors and other devices, to advanced three-dimensional wafer-level packaging applications. Nanometrics’ systems enable advanced process control for device manufacturers, providing improved device yield at reduced manufacturing cycle time, supporting the accelerated product life cycles in the semiconductor and other advanced device markets. The company maintains its headquarters in Milpitas, California, with sales and service offices worldwide. Nanometrics is traded on NASDAQ Global Select Market under the symbol NANO. Nanometrics’ website is http://www.nanometrics.com.

Forward Looking Statements

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Certain statements in this press release, including those found in the Q2 2017 Highlights, Dr. Stultz’s quote, and under the caption “Business Outlook,” are forward-looking statements that involve a number of risks and uncertainties that could cause actual results to differ materially from those described in this release. Although Nanometrics believes that the expectations reflected in the forward-looking statements are reasonable, actual results could differ materially from these expectations due to a variety of factors, including, but not limited to: decreased levels of industry spending; slowing adoption rate of Nanometrics’ new products; Nanometrics’ inability to gain additional market share, increase sales, ship products as scheduled, achieve customer acceptance of new products, or outperform the industry; decreased demand for Nanometrics’ products; shifts in the timing of customer orders and product shipments; technology adoption rates; changes in customer and product mix; changes in market share; changes in operating expenses; and general economic conditions. For additional information and considerations regarding the risks faced by Nanometrics that could cause actual results to differ materially, see its annual report on Form 10-K for the year ended December 31, 2016, as filed with the Securities and Exchange Commission on March 3, 2017 including under the caption “Risk Factors,” as well as other periodic reports filed with the SEC from time to time. Nanometrics disclaims any obligation to update information contained in any forward-looking statement, except as required by law.

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NANOMETRICS INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

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(Unaudited)

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NANOMETRICS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

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(Unaudited)

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NANOMETRICS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

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NANOMETRICS INCORPORATED

RECONCILIATION OF GAAP TO NON-GAAP RESULTS

(In thousands, except per share amounts)

(Unaudited)

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