8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

_______________________________________

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported):

August 7, 2019

Cabot Microelectronics Corporation

(Exact name of registrant as specified in its charter)

Delaware	000-30205	36-4324765
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

870 North Commons Drive, Aurora, Illinois	60504
(Address of principal executive offices)	(Zip Code)

(630) 375-6631

(Registrant’s telephone number, including area code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.001 per share	CCMP	NASDAQ

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company                    ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 2.02    Results of Operations and Financial Condition.

On August 7, 2019, Cabot Microelectronics Corporation issued a press release entitled “Cabot Microelectronics Corporation Reports Results for the Third Quarter of Fiscal 2019,” and made available on the Company’s website a presentation entitled “Third Quarter of Fiscal 2019 Earnings Call, August 8, 2019,” copies of which are attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and incorporated herein by reference. The press release and presentation contain financial and other information including that related to the Company’s third quarter of fiscal 2019, which ended June 30, 2019.

This information contained in the press release and presentation attached hereto as Exhibit 99.1 and Exhibit 99.2, respectively, and incorporated herein by reference is being furnished pursuant to Item 2.02 of Form 8-K and shall not be deemed "filed" for purposes of Section 18 of the Securities and Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d)	Exhibits
	The following exhibits are being furnished, not filed, herewith pursuant to Item 2.02 of Form 8-K:
	99.1	Press release, dated August 7, 2019, entitled “Cabot Microelectronics Corporation Reports Results for the Third Quarter of Fiscal 2019.”
	99.2	Presentation entitled “Third Quarter of Fiscal 2019 Earnings Call, August 8, 2019.”

SIGNATURE

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

		CABOT MICROELECTRONICS CORPORATION
		[Registrant]
Date: August 7, 2019	By:	/s/ SCOTT D. BEAMER
		Scott D. Beamer
		Vice President and Chief Financial Officer
		[Principal Financial Officer]

INDEX TO EXHIBITS

Exhibit Number	Title
99.1	Press release, dated August 7, 2019, entitled “Cabot Microelectronics Corporation Reports Results for Third Quarter of Fiscal 2019.”
99.2	Presentation entitled “Third Quarter of Fiscal 2019 Earnings Call, August 8, 2019.”

EX-99.1

EXHIBIT 99.1

PRESS RELEASE

Cabot Microelectronics Corporation Reports Record Revenue for The Third Quarter of Fiscal 2019

• Record Revenue of $271.9 Million, $121.4 Million or 80.7% Higher Than Last Year; Essentially Flat Compared with Adjusted Pro Forma Revenue of $272.6 Million Last Year

• Net Income of $18.9 Million, $16.3 Million or 46.3% Lower Than Last Year; Adjusted Pro Forma Net Income of $46.9 Million, $0.4 Million or 0.9% Higher Than Last Year¹ 

• Diluted Earnings Per Share of $0.64, $0.70 or 52.2% Lower Than Last Year; Adjusted Pro Forma Diluted Earnings Per Share of $1.59, $0.02 or 1.3% Higher Than Last Year¹ 

• Adjusted Pro FormaEBITDA of $85.8 Million, $5.5 Million or 6.9% Higher Than Last Year¹; Adjusted Pro Forma EBITDA of 31.5% of Revenue, 210 Basis Points Higher Than Last Year

• Expecting Full Year Fiscal 2019 Adjusted EBITDA Between $325 Million and $335 Million

AURORA, IL, August 7, 2019 - Cabot Microelectronics Corporation (Nasdaq: CCMP), a leading global supplier of consumable materials to semiconductor manufacturers and pipeline companies, today reported financial results for its third quarter of fiscal 2019, which ended June 30, 2019.

Key Quarter Highlights

During the third fiscal quarter, the company delivered total revenue of $271.9 million, essentially flat compared with the adjusted pro forma revenue of $272.6 million in the same quarter last year. The company’s year-over-year growth in CMP pads, electronic chemicals and pipeline performance products was offset by lower CMP slurries revenue. Adjusted pro forma gross margin was 45.3%, and adjusted pro forma EBITDA was $85.8 million, or 31.5% of revenue, in the quarter. The company generated $63.5 million in cash flow from operations during the quarter, and ended the quarter with $168.7 million of cash on hand and $943.7 million in total debt.

“We are proud of our strong results this quarter, which we believe demonstrate the resiliency of our core CMP business as well as the strength of our acquired businesses. In particular, it is encouraging to see the continued growth in electronic chemicals and pipeline performance in addition to signs of broader semiconductor industry stabilization,” said David Li, President and CEO of Cabot Microelectronics Corporation. “We continue to focus on execution and managing our business within this challenging environment and feel that we are well positioned to continue to profitably grow in the future.”

¹ Adjusted pro forma results, including adjusted pro forma gross margin, adjusted pro forma net income, adjusted pro forma EBITDA and adjusted pro forma diluted EPS, are considered as non-GAAP financial measures by the U.S. Securities and Exchange Commission (SEC). These adjusted pro forma results are presented as if the company’s acquisition of KMG Chemicals, Inc. (“KMG”) had been consummated on October 1, 2017, and exclude the impact of non-recurring acquisition and integration related costs, acquisition-related amortization expenses, the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act and certain costs related to a warehouse fire at KMG-Bernuth in Tuscaloosa, Alabama. See “Use of Certain GAAP and Non-GAAP Adjusted Pro Forma Financial Information” below for more information about these measures. In addition, reconciliations of these non-GAAP measures to their most comparable GAAP measures and reconciliations of pro forma financial information to adjusted pro forma financial information are included in the financial statements portion of this press release.

Key Financial Information for Third Quarter of Fiscal 2019

• Revenue was $271.9 million, which is $121.4 million, or 80.7% higher than the revenue reported in the same quarter last year. Adjusted pro forma revenue of $271.9 million was $0.7 million, or 0.3%, lower compared to the same quarter last year. Year-over-year results benefited from revenue growth in CMP pads, electronic chemicals and pipeline performance products, while CMP slurries revenue declined due to soft semiconductor industry demand, primarily from memory and foundry customers, while advanced logic demand remained strong.

• Net income for the quarter was $18.9 million, which is $16.3 million, or 46.3%, lower than in the same quarter last year. Excluding the impact of acquisition-related expenses, an adjustment related to newly issued final regulations for the tax act and cleanup costs related to a wood treatment business warehouse fire in Tuscaloosa, Alabama, adjusted pro forma net income was $46.9 million, which is $0.4 million, or 0.9%, higher than in the prior year.

• Diluted EPS was $0.64 this quarter, which is $0.70, or 52.2%, lower than in the third quarter of fiscal 2018. Adjusted pro forma EPS was $1.59, which is $0.02, or 1.3%, higher than in the same quarter last year.

• Adjusted pro forma EBITDA was $85.8 million, which is $5.5 million, or 6.9%, higher than in the same quarter last year, primarily due to lower selling, general and administrative expenses. Adjusted pro forma EBITDA margin for the quarter was 31.5%, compared to 29.4% in the same quarter last year.

Segment Results for Third Quarter of Fiscal 2019

Electronic Materials - Revenue was $212.1 million, which is $10.0 million, or 4.5%, lower than pro forma revenue in the same quarter last year. CMP pads delivered another quarter of strong revenue, which was 11.9% higher than in the same quarter last year. Electronic chemicals revenue increased 2.3% over the prior year’s quarter, driven by higher demand for products consumed in advanced logic applications. CMP slurries revenue declined 11.6% from last year’s quarter, primarily due to softer industry conditions that resulted in lower demand for the company’s products from memory and foundry customers, which offset strong demand from advanced logic customers. The Electronic Materials segment adjusted EBITDA was $70.9 million, or 33.4% of revenue.

Performance Materials - Revenue was $59.8 million for the quarter, which is $9.3 million, or 18.4%, higher than pro forma revenue in the prior year’s quarter. The increase was driven by higher revenue from the company’s pipeline performance and QED businesses. The Performance Materials segment adjusted EBITDA was $27.4 million, or 45.9% of revenue.

Guidance Update

For the fourth quarter of fiscal 2019, the company currently expects total revenue to be approximately flat compared to the company’s revenue for the third quarter of fiscal 2019. Electronic Materials revenue is expected to be approximately flat sequentially. Performance Materials revenue is expected to be approximately flat sequentially due to the timing impact of QED revenue, with strong demand for the company’s pipeline performance products expected to continue.

The company now expects full fiscal year 2019 adjusted EBITDA to be between $325 million and $335 million. Additional current expectations are provided on slide 9 in the related slide presentation.

RELATED SLIDE PRESENTATION

A slide presentation related to this press release will be available at ir.cabotcmp.com in the Quarterly Results section of the Investor Relations center at approximately the same time that this press release is issued.

CONFERENCE CALL

Cabot Microelectronics Corporation’s quarterly earnings conference call will be held at 10:00 a.m. Eastern Time (9:00 a.m. Central Time) on Thursday, August 8. The conference call will be available via live webcast and replay from the company’s website, www.cabotcmp.com, or by phone at (844) 825-4410. Callers outside the U.S. may dial (973) 638-3236. The conference code for the call is 4888912. A transcript of the formal comments made during the conference call will also be available in the Investor Relations section of the company’s website.

ABOUT CABOT MICROELECTRONICS CORPORATION

Cabot Microelectronics Corporation, headquartered in Aurora, Illinois, is a leading global supplier of consumable materials to semiconductor manufacturers and pipeline companies. The company’s products play a critical role in the production of advanced semiconductor devices, helping to enable the manufacture of smaller, faster and more complex devices by its customers. Cabot Microelectronics Corporation is also a leading provider of performance materials to pipeline operators. The company's mission is to create value by delivering high-performing and innovative solutions that solve its customers’ challenges. The company has approximately 1,900 employees globally. For more information about Cabot Microelectronics Corporation, visit www.cabotcmp.com, or contact Colleen Mumford, Director of Investor Relations, at 630-499-2600.

USE OF CERTAIN GAAP AND NON-GAAP ADJUSTED PRO FORMA FINANCIAL INFORMATION The company presented the following measures considered as non-GAAP by the SEC: adjusted pro forma EBITDA (earnings before interest, taxes, depreciation and amortization), adjusted pro forma EBITDA margin, adjusted pro forma net income and adjusted pro forma diluted earnings per share. These adjusted pro forma results are presented as if the company’s acquisition of KMG Chemicals, Inc. (“KMG”), had been consummated on October 1, 2017 and exclude the impact of non-recurring acquisition and integration related costs, acquisition related amortization expenses, the adjustments related to the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act and certain costs related to a warehouse fire at KMG-Bernuth in Tuscaloosa, Alabama. The non-GAAP adjusted pro forma financial information provided in this press release is a supplement to, and not a substitute for, the company’s financial results presented in accordance with U.S. GAAP. These non-GAAP adjusted pro forma financial measures are provided to enhance the investor's understanding about the company's ongoing operations. Specifically, the company believes the impact of the adjustments related to the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act, KMG acquisition and integration-related expenses, certain costs related to a warehouse fire at KMG-Bernuth in n Tuscaloosa, Alabama, and acquisition related amortization expenses are not indicative of its core operating results, and thus presents these certain metrics excluding these effects. The presentation of non-GAAP adjusted pro forma financial information is not meant to be considered in isolation or as a substitute for results prepared and presented in accordance with U.S. GAAP. Reconciliations of non-GAAP measures to their most comparable GAAP measures and reconciliations of pro forma financial information to adjusted pro forma financial information are included in the financial statements portion of this press release.

The company has not quantitatively reconciled its guidance for adjusted EBITDA to its most comparable GAAP measure because the company does not provide specific guidance for the various reconciling items as certain items that impact this measure have not occurred, are out of the company’s control, or cannot be reasonably predicted. Accordingly, a reconciliation to the nearest GAAP financial metric is not available without unreasonable effort. Please note that the unavailable reconciling items could significantly impact the company’s results.

Adjusted EBITDA for the Electronic Materials and Performance Materials segments is presented in conformity with Accounting Standards Codification Topic 280, Segment Reporting. This measure is reported to the chief operating decision maker for purposes of making decisions about allocating resources to the segments and assessing their performance. For these reasons, this measure is excluded from the definition of non-GAAP financial measures under the SEC Regulation G and Item 10(e) of Regulation S-K.

FORWARD LOOKING STATEMENTS

This press release contains forward-looking statements, which address a variety of subjects including, for example, future sales and operating results; growth or contraction, and trends in the industry and markets in which the Company participates; the acquisition of, investment in, or collaboration with other entities, including the Company’s acquisition of KMG Chemicals, Inc. (“KMG”), and the expected benefits and synergies of such acquisition; new product introductions; development of new products, technologies and markets; product performance; the financial conditions of the Company's customers; competitive landscape; the Company's supply chain; natural disasters; various economic or political factors and international or national events, including related to the enactment of trade sanctions, tariffs, or other similar matters; the generation, protection and acquisition of intellectual property, and litigation related to such intellectual property or third party intellectual property; environmental, health and safety laws and regulations, and related compliance; the operation of facilities by Cabot Microelectronics; the Company's management; foreign exchange fluctuation; the Company's current or future tax rate, including the effects of the Tax Cuts and Jobs Act in the United States (“tax act”); cybersecurity threats; financing facilities and related debt, pay off or payment of principal and interest, and compliance with covenants and other terms; and, uses and investment of the Company's cash balance, including dividends and share repurchases, which may be suspended, terminated or modified at any time for any reason by the Company, based on a variety of factors. Statements that are not historical facts, including statements about Cabot Microelectronics’ beliefs, plans and expectations, are forward-looking statements. Such statements are based on current expectations of Cabot Microelectronics’ management and are subject to a number of factors and uncertainties, which could cause actual results to differ materially from those described in the forward-looking statements. For information about factors that could cause actual results to differ materially from those described in the forward-looking statements, please refer to Cabot Microelectronics’ filings with the Securities and Exchange Commission (“SEC”), including the risk factors contained in Cabot Microelectronics’ Annual Report on Form 10-K, its Quarterly Report on Form 10-Q for the quarter ended March 31, 2019, and its Quarterly Report on Form 10-Q for the quarter ended June 30, 2019, which is expected to be filed by August 9, 2019. Except as required by law, Cabot Microelectronics undertakes no obligation to update forward-looking statements made by it to reflect new information, subsequent events or circumstances.

Contact:

Colleen Mumford

Corporate Relations Director

Cabot Microelectronics Corporation

(630) 499-2600

CABOT MICROELECTRONICS CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited and amounts in thousands, except per share amounts)

	Quarter Ended								Six Months Ended
	June 30, 2019			March 31, 2019			June 30, 2018		June 30, 2019			June 30, 2018
Revenue	$	271,882		$	265,391		$	150,437	$	759,051		$	433,394
Cost of sales	156,492			150,571			69,737		429,508			203,635
Gross profit	115,390			114,820			80,700		329,543			229,759
Operating expenses:
Research, development & technical	12,191			12,778			13,059		39,009			38,578
Selling, general & administrative	50,959			50,328			25,711		162,415			75,051
Total operating expenses	63,150			63,106			38,770		201,424			113,629
Operating income	52,240			51,714			41,930		128,119			116,130
Interest expense	12,757			13,331			513		32,978			2,803
Interest income	417			568			1,141		2,004			3,248
Other income (expense), net	(472		)	(1,014		)	486		(2,897		)	113
Income before income taxes	39,428			37,937			43,044		94,248			116,688
Provision for income taxes	20,550			10,800			7,873		34,790			54,863
Net income	$	18,878		$	27,137		$	35,171	$	59,458		$	61,825
Basic earnings per share	$	0.65		$	0.94		$	1.37	$	2.09		$	2.42
Weighted average basic shares outstanding	29,064			28,998			25,612		28,399			25,479
Diluted earnings per share	$	0.64		$	0.92		$	1.34	$	2.06		$	2.35
Weighted average diluted shares outstanding	29,568			29,479			26,319		28,924			26,222

CABOT MICROELECTRONICS CORPORATION

CONSOLIDATED CONDENSED BALANCE SHEETS

(Unaudited and amounts in thousands)

	June 30, 2019		September 30, 2018
ASSETS:
Current assets:
Cash and cash equivalents	$	168,678	$	352,921
Accounts receivable, net	135,235		75,886
Inventories, net	145,783		71,926
Other current assets	25,296		22,048
Total current assets	474,992		522,781
Property, plant and equipment, net	266,391		111,403
Other long-term assets	1,557,694		146,789
Total assets	$	2,299,077	$	780,973
LIABILITIES AND STOCKHOLDERS' EQUITY:
Current liabilities:
Accounts payable	$	46,758	$	18,171
Current portion of long-term debt	13,313		—
Accrued expenses, income taxes payable and other current liabilities	95,261		82,983
Total current liabilities	155,332		101,154
Long-term debt, net of current portion	930,370		—
Other long-term liabilities	188,042		13,127
Total liabilities	1,273,744		114,281
Stockholders' equity	1,025,333		666,692
Total liabilities and stockholders' equity	$	2,299,077	$	780,973

CABOT MICROELECTRONICS CORPORATION

Reconciliation of GAAP Net income to Non-GAAP Adjusted EBITDA

(Unaudited and amounts in thousands, except per share and percentage amounts)

	Quarter Ended						Six Months Ended
	June 30, 2019			June 30, 2018			June 30, 2019			June 30, 2018
Net income	$	18,878		$	35,171		$	59,458		$	61,825
Interest expense	12,757			513			32,978			2,803
Interest income	(417		)	(1,141		)	(2,004		)	(3,248		)
Income taxes	20,550			7,873			34,790			54,863
Depreciation & amortization	26,587			6,410			70,476			19,548
EBITDA*	$	78,355		$	48,826		$	195,698		$	135,791
Acquisition and integration-related expenses	2,910			—			33,108			—
Charge for fair value write-up of acquired inventory sold	42			—			14,869			—
Cost related to KMG-Bernuth warehouse fire	$	4,450		$	—		$	4,450		$	—
Adjusted EBITDA**	$	85,757		$	48,826		$	248,125		$	135,791
Adjusted EBITDA margin	31.5		%	32.5		%	32.7		%	31.3		%

*  EBITDA represents earnings before interest, taxes, depreciation and amortization.

** Adjusted EBITDA is calculated by excluding items from EBITDA that are believed to be infrequent or not indicative of the company's continuing operating performance.

SUPPLEMENTAL UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

The following Unaudited Pro Forma Condensed Combined Financial Information is presented to illustrate the estimated effects of the company’s acquisition of KMG (the “Acquisition”), which was consummated on November 15, 2018 (the “Acquisition Date”), based on the historical results of operations of Cabot Microelectronics and KMG. See Note 1, Background and Basis of Presentation, and Note 4, Business Combination, to the consolidated financial statements for additional information on the Acquisition. The following Unaudited Pro Forma Condensed Combined Statements of Income for the three and nine months ended June 30, 2019 and 2018 are based on the historical financial statements of Cabot Microelectronics and KMG after giving effect to the Acquisition, and the assumptions and adjustments described in the accompanying notes to these Unaudited Pro Forma Condensed Combined Statements of Income.

The historical Cabot Microelectronics Consolidated Statements of Income for the three and nine months ended June 30, 2019 and 2018 were derived from the consolidated financial statements included elsewhere in this Form 10-Q. The historical KMG Consolidated Statements of Income for the nine months ended June 30, 2019, as well as the historical KMG Consolidated Statements of Income for the three and nine months ended June 30, 2018 includes information derived from KMG’s books and records. Prior to the Acquisition, KMG was on a July 31st fiscal year end reporting cycle. These pro forma financials include actual KMG’s pre-acquisition results with the months aligned to Cabot Microelectronics’ fiscal periods, and therefore, they do not align with consolidated financial statements included in KMG’s Quarterly Reports on Form 10-Q.

The Unaudited Pro Forma Condensed Combined Statements of Income are presented as if the Acquisition had been consummated on October 1, 2017, the first business day of our 2018 fiscal year, and combine the historical results of Cabot Microelectronics and KMG, which is consistent with internal management reporting, after primarily giving effect to the following assumptions and adjustments:

• Application of the acquisition method of accounting;

• Elimination of transaction costs incurred in connection with the Acquisition;

• Adjustments to reflect the new financing arrangements entered into and legacy financing arrangements retired in connection with the Acquisition;

• The exchange of 0.2000 share(s) of Cabot Microelectronics common stock for each share of KMG common stock; and

• Conformance of accounting policies.

The Unaudited Pro Forma Condensed Combined Financial Information was prepared using the acquisition method of accounting, which requires, among other things, that assets acquired and liabilities assumed in a business combination be recognized at their fair values as of the completion of the acquisition. We utilized estimated fair values at the Acquisition Date to allocate the total consideration exchanged to the net tangible and intangible assets acquired and liabilities assumed. This allocation was initially completed as of November 15, 2018.  The allocation may be adjusted for up to one-year post closing.

The Unaudited Pro Forma Condensed Combined financial information has been prepared on the basis of SEC Regulation S-X Article 11 and is not necessarily indicative of the results of operations that would have been realized had the transactions been completed as of the dates indicated, nor are they meant to be indicative of our anticipated combined future results. In addition, the accompanying Unaudited Pro Forma Condensed Combined Statements of Income do not reflect any additional anticipated synergies, operating efficiencies, cost savings, or any integration costs that may result from the Acquisition.

The historical consolidated financial information has been adjusted in the accompanying Unaudited Pro Forma Condensed Combined Statements of Income to give effect to unaudited pro forma events that are (1) directly attributable to the transaction, (2) factually supportable and (3) are expected to have a continuing impact on the results of operations of the combined company. As a result, under SEC Regulation S-X Article 11, certain non-recurring expenses such as deal costs and compensation expenses related to severance or accelerated stock compensation and certain non-cash costs related to the fair value step-up of inventory are eliminated from pro forma results in the periods presented. Certain recurring historical KMG expenses related to depreciation, amortization, financing costs and costs of sales have been adjusted as if the Acquisition had occurred on October 1, 2017.

In contrast, under the ASC 805 presentation in Note 4, Business Combination, to the consolidated financial statements, these expenses are required to be included in prior year pro forma results.

The Unaudited Pro Forma Condensed Combined Financial Information, including the related notes included herein, should be read in conjunction with Cabot Microelectronics’ Current Report on Form 8-K/A filed on January 30, 2019, as well as our consolidated financial statements included in this Form 10-Q and the historical consolidated financial statements and related notes of Cabot Microelectronics and KMG, which are available to the public at the SEC’s website at www.sec.gov.

CABOT MICROELECTRONICS CORPORATION

Unaudited Pro Forma Condensed Combined Statement of Income

For the Three and Nine Months Ended June 30, 2019 and June 30, 2018

(in thousands, except per share data)

	Three Months Ended June 30,					Nine Months Ended June 30,
	2019			2018		2019				2018
Revenue	$	271,882		$	272,589		$	821,029		$	784,694
Cost of sales	156,450			152,414			457,372			443,059
Gross profit	115,432			120,175			363,657			341,635
Operating expenses:
Research, development and technical	12,191			13,059			39,009			38,578
Selling, general and administrative expenses	54,655			53,024			166,189			155,695
Total operating expenses	66,846			66,083			205,198			194,273
Operating income	48,586			54,092			158,459			147,362
Interest expense	12,759			13,350			38,372			41,391
Interest income	417			1,150			2,055			3,260
Other income (expense), net	(472		)	396			(3,155		)	(890		)
Income before income taxes	35,772			42,288			118,987			108,341
Provision for income taxes	19,695			7,585			30,049			37,462
Net income	$	16,077		34,703			88,938			70,879
Basic earnings per share	$	0.55		1.20			3.07			2.47
Weighted average basic shares outstanding	29,064			28,849			28,944			28,716
Diluted earnings per share	$	0.54		1.17			3.02			2.41
Weighted average diluted shares outstanding	29,568			29,556			29,469			29,459

CABOT MICROELECTRONICS CORPORATION

Unaudited Pro Forma Condensed Combined Statement of Income

For the Three Months Ended June 30, 2019

(in thousands, except per share data)

	Cabot Microelectronics
	Three Months Ended June 30, 2019			Pro Forma Adjustments (1)			Pro Forma Combined
Revenue	$	271,882		$	—		$	271,882
Cost of sales	156,492			(42		)	156,450
Gross profit	115,390			42			115,432
Operating expenses:
Research, development and technical	12,191			—			12,191
Selling, general and administrative expenses	50,959			3,696			54,655
Total operating expenses	63,150			3,696			66,846
Operating income	52,240			(3,654		)	48,586
Interest expense	12,757			2			12,759
Interest income	417			—			417
Other income (expense), net	(472		)	—			(472		)
Income before income taxes	39,428			(3,656		)	35,772
Provision for income taxes	20,550			(855		)	19,695
Net income	$	18,878		$	(2,801	)	$	16,077
Basic earnings per share	$	0.65					$	0.55
Weighted average basic shares outstanding	29,064						29,064
Diluted earnings per share	$	0.64					$	0.54
Weighted average diluted shares outstanding	29,568						29,568

¹ Pro forma adjustments are related to non-recurring items directly attributable to the transaction as well as recurring differences related to amortization or financing costs that were included as if the companies were combined as of October 1, 2017.

CABOT MICROELECTRONICS CORPORATION

Unaudited Pro Forma Condensed Combined Statement of Income

For the Nine Months Ended June 30, 2019

(in thousands, except per share data)

	Cabot Microelectronics (1)			KMG Chemicals (2)
	Nine Months Ended June 30, 2019			October 1, 2018 to November 14, 2018			Presentation Reclassification (3)			Pro Forma Adjustments (4)			Pro Forma Combined
Revenue	$	759,051		$	61,978		$	—		$	—		$	821,029
Cost of sales	429,508			36,534			4,741			(13,411		)	457,372
Gross profit	329,543			25,444			(4,741		)	13,411			363,657
Operating expenses:
Distribution expenses	—			4,741			(4,741		)	—			—
Research, development and technical	39,009			—			—			—			39,009
Selling, general and administrative expenses	162,415			40,504			—			(36,730		)	166,189
Amortization of intangibles	—			1,943			—			(1,943		)	—
Total operating expenses	201,424			47,188			(4,741		)	(38,673		)	205,198
Operating income	128,119			(21,744		)	—			52,084			158,459
Interest expense	32,978			8,537			—			(3,143		)	38,372
Interest income	2,004			51			—			—			2,055
Derivative fair value gain	—			567			—			(567		)	—
Other income (expense), net	(2,897		)	(258		)	—			—			(3,155		)
Income before income taxes	94,248			(29,921		)	—			54,660			118,987
Provision for income taxes (benefit)	34,790			(6,847		)	—			2,106			30,049
Net income	$	59,458		$	(23,074	)	$	—		$	52,554		$	88,938
Basic earnings per share	$	2.09											$	3.07
Weighted average basic shares outstanding	28,399												28,944
Diluted earnings per share	$	2.06											$	3.02
Weighted average diluted shares outstanding	28,924												29,469

¹ Includes heritage Cabot Microelectronics from October 1, 2018 to June 30, 2019 and heritage KMG from November 15, 2018 to June 30, 2019. On November 15, 2018, the Acquisition was completed and actual combined company results are included.

² Heritage KMG results that occurred prior to the Acquisition on November 15, 2018.

³ Represents the reclassification of KMG distribution expenses from operating expenses to cost of sales, in order to conform with Cabot Microelectronics’ accounting policies.

⁴ Certain pro forma adjustments related to depreciation, amortization, financing costs and costs of sales have been made for the October 1, 2018 to June 30, 2019 period assuming that the Acquisition occurred on October 1, 2017. Additionally, nonrecurring pro forma adjustments have been made for deal costs, compensation expenses related to severance or accelerated stock compensation, and the fair value step-up of inventory directly attributable throughout the nine-month period.

CABOT MICROELECTRONICS CORPORATION

Unaudited Pro Forma Condensed Combined Statement of Income

For the Three Months Ended June 30, 2018

(in thousands, except per share data)

	Cabot Microelectronics		KMG Chemicals (1)
	Three Months Ended June 30, 2018		Three Months Ended June 30, 2018			Presentation Reclassification (2)			Pro Forma Adjustments (3)			Pro Forma Combined
Revenue	$	150,437	$	122,152		$	—		$	—		$	272,589
Cost of sales	69,737		69,964			9,308			3,405			152,414
Gross profit	80,700		52,188			(9,308		)	(3,405		)	120,175
Operating expenses:
Distribution expenses	—		9,308			(9,308		)	—			—
Research, development and technical	13,059		—			—			—			13,059
Selling, general and administrative expenses	25,711		15,043			—			12,270			53,024
Amortization of intangibles	—		3,863			—			(3,863		)	—
Total operating expenses	38,770		28,214			(9,308		)	8,407			66,083
Operating income	41,930		23,974			—			(11,812		)	54,092
Interest expense	513		4,196			—			8,641			13,350
Interest income	1,141		9			—			—			1,150
Loss on the extinguishment of debt	—		194			—			(194		)	—
Derivative fair value gain	—		1,450			—			(1,450		)	—
Other income (expense), net	486		(90		)	—			—			396
Income before income taxes	43,044		20,953			—			(21,709		)	42,288
Provision for income taxes (benefit)	7,873		4,795			—			(5,083		)	7,585
Net income	$	35,171	$	16,158		$	—		$	(16,626	)	$	34,703
Basic earnings per share	$	1.37	$	1.04								$	1.20
Weighted average basic shares outstanding	25,612		15,505									28,849
Diluted earnings per share	$	1.34	$	1.02								$	1.17
Weighted average diluted shares outstanding	26,319		15,905									29,556

¹ Shares outstanding for KMG are from KMG's filed 10-Q for the three months ended April 30, 2018. They are intended for illustrative purposes only and do not impact pro forma EPS calculations at right. Three months ended June 30, 2018 KMG share calculations were not available.

² Represents the reclassification of KMG distribution expenses from operating expenses to cost of sales, in order to conform with Cabot Microelectronics’ accounting policies.

³ Pro forma adjustments are related to items directly attributable to the transaction, such as recurring differences related to depreciation, amortization or financing costs that were included as if the companies were combined as of October 1, 2017.

CABOT MICROELECTRONICS CORPORATION

Unaudited Pro Forma Condensed Combined Statement of Operations

For the Nine Months Ended June 30, 2018

(in thousands, except per share data)

	Cabot Microelectronics		KMG Chemicals (1)
	Nine Months Ended June 30, 2018		Nine Months Ended June 30, 2018			Presentation Reclassification (2)			Pro Forma Adjustments (3)			Pro Forma  Combined
Revenue	$	433,394	$	351,300		$	—		$	—		$	784,694
Cost of sales	203,635		202,182			26,983			10,259			443,059
Gross profit	229,759		149,118			(26,983		)	(10,259		)	341,635
Operating expenses:
Distribution expenses	—		26,983			(26,983		)	—			—
Research, development and technical	38,578		—			—			—			38,578
Selling, general and administrative expenses	75,051		43,823			—			36,821			155,695
Amortization of intangibles	—		10,835			—			(10,835		)	—
Total operating expenses	113,629		81,641			(26,983		)	25,986			194,273
Operating income	116,130		67,477			—			(36,245		)	147,362
Interest expense	2,803		14,733			—			23,855			41,391
Interest income	3,248		12			—			—			3,260
Loss on the extinguishment of debt	—		6,503			—			(6,503		)	—
Derivative fair value gain	—		5,332			—			(5,332		)	—
Other income (expense), net	113		(1,003		)	—			—			(890		)
Income before income taxes	116,688		50,582			—			(58,929		)	108,341
Provision for income taxes (benefit)	54,863		(3,604		)	—			(13,797		)	37,462
Net income	$	61,825	$	54,186		$	—		$	(45,132	)	$	70,879
Basic earnings per share	$	2.42	$	3.75								$	2.47
Weighted average basic shares outstanding	25,479		14,439									28,716
Diluted earnings per share	$	2.35	$	3.66								$	2.41
Weighted average diluted shares outstanding	26,222		14,814									29,459

¹ Shares outstanding for KMG are from KMG's filed 10-Q for the nine months ended April 30, 2018. They are intended for illustrative purposes only and do not impact pro forma EPS calculations at right. Nine months ended June 30, 2018 KMG share calculations were not available.

² Represents the reclassification of KMG distribution expenses from operating expenses to cost of sales, in order to conform with Cabot Microelectronics’ accounting policies.

³ Pro forma adjustments are related to items directly attributable to the transaction, such as recurring differences related to depreciation, amortization, compensation or financing costs that were included as if the companies were combined as of October 1, 2017.

CABOT MICROELECTRONICS CORPORATION

Summary of Pro Forma Adjustments

(in thousands, except per share data)

	Three Months Ended June 30, 2019			Three Months Ended June 30, 2018			Nine Months Ended June 30, 2019			Nine Months Ended June 30, 2018
Impact to cost of sales:
Depreciation and amortization, net(a)	$	—		$	3,405		$	1,459		$	10,259
Inventory step-up(b)	(42		)	—			(14,870		)	—
Impact to cost of sales	$	(42	)	$	3,405		$	(13,411	)	$	10,259
Impact to operating expense:
Depreciation and amortization step up(a)	6,488			12,204			24,416			36,624
Compensation expense(c)	—			66			33			197
Deal costs(d)	(2,792		)	—			(61,179		)	—
Historical KMG amortization in other operating expenses removal(a)	—			(3,863		)	(1,943		)	(10,835		)
Impact to operating expense	$	3,696		$	8,407		$	(38,673	)	$	25,986
Impact to other expense:
Loss on the extinguishment of debt(e)	—			(194		)	—			(6,503		)
Derivative fair value gain(e)	—			1,450			567			5,332
Impact to other expense	$	—		$	1,256		$	567		$	(1,171	)
Impact to interest, net:
Interest expense(f)	2			8,641			(3,143		)	23,855
Impact to interest	$	2		$	8,641		$	(3,143	)	$	23,855

Adjustments included in the accompanying Unaudited Pro Forma Condensed Combined Statements of Income are as follows:

(a) Depreciation and amortization expense are adjusted by removing depreciation and amortization associated with legacy KMG assets and assigning a pro forma expense based on the fair value of the assets on the date of the Acquisition. For periods after the date of the Acquisition, there is no pro forma adjustment for Depreciation and actual booked depreciation is reflected on a straight line basis. Depreciation costs are allocated to costs of sales and selling, general and administrative expenses based on historical KMG allocations. Amortization costs are allocated to costs of sales or selling, general and administrative expense based on the use of the asset, where applicable.

(b) Cost of sales is impacted by increased inventory balance caused by the non-cash impact of the step up to fair value of the inventory. The incremental costs of sales driven by the inventory step-up during the period have been removed.

(c) Directly attributable and non-recurring compensation expense related to non-recurring retention expenses and stock award vesting directly attributable to the Acquisition are removed for pro forma purposes. For KMG stock awards that were replaced by Cabot stock awards in connection with the Acquisition, the vesting for on-going service expenses are added as a pro forma adjustment.

(d) The elimination of non-recurring deal costs incurred in connection with the Acquisition.

(e) As a result of the Acquisition, there were non-recurring costs incurred by KMG as a result of retiring old debt. The costs associated with retiring the old debt facility and other financial instruments are removed for pro forma purposes. These instruments were retired as a result of the Acquisition and are not included in the pro forma results, which are presented as if the Acquisition had occurred on October 1, 2017.

(f) Changes in interest expense as a result of financing associated with the Acquisition. The adjustments remove legacy KMG interest costs, including unused revolver fees and adds the costs associated with the new financing facilities as if the Acquisition occurred on October 1, 2017.

We calculated the income tax effect of the pro forma adjustments using a 22.1% and 23.4% tax rate, which represent the weighted average statutory tax rate for nine-month period ended June 30, 2019 and year-ended September 30, 2018, respectively.

Additionally, for the 2018 periods presented, we calculated the unaudited pro forma weighted average number of basic shares outstanding by adding the Cabot Microelectronics weighted average number of basic shares outstanding from the share amounts disclosed in the historical Quarterly Report on Form 10-Q to the amount of shares issued in connection with the Acquisition, as if the shares were held for the entire period.

We calculated the unaudited pro forma weighted average number of diluted shares outstanding by adding the number of shares issued in the Acquisition to the amount disclosed in the historical Cabot Microelectronics Quarterly Report on Form 10-Q.

The basic and diluted EPS calculation takes pro forma net income divided by the applicable number of shares outstanding.

Cabot Microelectronics Corporation

Reconciliation of Pro Forma and Non-GAAP Adjusted Pro Forma Information

The company reports its financial results in accordance with U.S. GAAP.  However, management believes that certain non-GAAP financial measures that reflect the way that management evaluates the business may provide investors with additional information regarding the company’s results, trends and ongoing performance on a comparable basis.  We refer to these measures “Adjusted Pro Forma”, which begin with Pro Forma results that are prepared in accordance with SEC Regulation S-X Article 11 and are included above.  These results are then adjusted for the following additional items:

• Removal of amortization of acquisition related intangibles, since management believes that these costs are not indicative of the company’s core operating performance.

• Removal of integration expenses, as they are non-recurring in nature.

• Adjustment for U.S. Tax Reform, which represents a significant non-recurring item affecting comparability among periods.

• Removal of certain costs related to a warehouse fire at KMG-Bernuth.

Reconciliations for these items are provided in the tables below.

CABOT MICROELECTRONICS CORPORATION

Unaudited Reconciliation of Pro Forma Condensed Combined

Statement of Income to Non-GAAP Adjusted Pro Forma Condensed

Combined Statement of Income

For the Three Months Ended June 30, 2019

(in thousands, except per share data)

				Non-GAAP Adjustments
	Pro Forma			Amortization of Acquisition Related Intangibles			Integration Expenses			U.S Tax Reform			Costs Related to KMG-Bernuth Warehouse Fire			Adjusted Pro forma
Revenue	$	271,882		$	—		$	—		$	—		$	—		$	271,882
Cost of Sales	156,450			(3,470		)	—			—			(4,200		)	148,780
Gross Profit	115,432			3,470			—						4,200			123,102
Gross Profit, % of Revenue	42.5		%	1.3		%	—			—		%	1.5		%	45.3		%
Operating Expenses
Research, development and technical	12,191			—			—						—			12,191
Selling, general and administrative	54,655			(19,942		)	(117		)				(250		)	34,346
Total Operating Expenses	66,846			(19,942		)	(117		)				(250		)	46,537
Operating Income	48,586			23,412			117						4,450			76,565
Interest Expense	12,759			—			—						—			12,759
Interest Income	417			—			—						—			417
Other Income (Expense), net	(472		)	—			—						—			(472		)
Income before income taxes	35,772			23,412			117						4,450			63,751
Provision for income taxes	19,695			5,273			26			(9,128		)	1,002			16,868
Net Income	$	16,077		$	18,139		$	91		$	9,128		$	3,448		$	46,883
Diluted Earnings per share	$	0.54		$	0.62		$	—		$	0.31		$	0.12		$	1.59
Weighted Average Diluted Shares Outstanding	29,568			29,568			29,568			29,568			29,568			29,568
Depreciation & amortization	$	33,076		$	(23,412	)	$	—		$	—		$	—		$	9,664
EBITDA	$	81,190		$	—		$	117					$	4,450		$	85,757
EBITDA Margin	29.9		%				—		%				1.6		%	31.5		%

CABOT MICROELECTRONICS CORPORATION

Unaudited Reconciliation of Pro Forma Condensed Combined

Statement of Income to Non-GAAP Adjusted Pro Forma Condensed

Combined Statement of Income

For the Nine Months Ended June 30, 2019

(in thousands, except per share data)

				Non-GAAP Adjustments
	Pro Forma			Amortization of Acquisition Related Intangibles			Integration Expenses			U.S. Tax Reform			Costs Related to KMG-Bernuth Warehouse Fire			Adjusted Pro forma
Revenue	$	821,029		$	—		$	—					$	—		$	821,029
Cost of Sales	457,372			(10,410		)	—						(4,200		)	442,762
Gross Profit	363,657			10,410			—			—			4,200			378,267
Gross Profit, % of Revenue	44.3		%	1.3		%	—			—			0.5		%	46.1		%
Operating Expenses
Research, development and technical	39,009			—			—						—			39,009
Selling, general and administrative	166,189			(59,826		)	(2,208		)				(250		)	103,905
Total Operating Expenses	205,198			(59,826		)	(2,208		)	—			(250		)	142,914
Operating Income	158,459			70,236			2,208			—			4,450			235,353
Interest Expense	38,372			—			—						—			38,372
Interest Income	2,055			—			—						—			2,055
Other Income (Expense), net	(3,155		)	—			—						—			(3,155		)
Income before income taxes	118,987			70,236			2,208			—			4,450			195,881
Provision for income taxes	30,049			15,818			497			(8,869		)	1,002			38,497
Net Income	$	88,938		$	54,418		$	1,711		$	8,869		$	3,448		$	157,384
Diluted Earnings per share	$	3.02		$	1.84		$	0.06		$	0.30		$	0.12		$	5.34
Weighted Average Diluted Shares Outstanding	29,469			29,469			29,469			29,469			29,469			29,469
Depreciation & amortization	$	100,100		$	(70,236	)	$	—					$	—		$	29,864
EBITDA	$	255,404		$	—		$	2,208		$	—		$	4,450		$	262,062
EBITDA Margin	31.1		%	—			0.3		%				0.5		%	31.9		%

CABOT MICROELECTRONICS CORPORATION

Unaudited Reconciliation of Pro Forma Condensed Combined

Statement of Income to Non-GAAP Adjusted Pro Forma Condensed

Combined Statement of Income

For the Three Months Ended June 30, 2018

(in thousands, except per share data)

				Non-GAAP Adjustments
	Pro Forma			Amortization of Acquisition Related Intangibles			U.S. Tax Reform			Adjusted Pro forma
Revenue	$	272,589		$	—		$	—		$	272,589
Cost of Sales	152,414			(3,470		)	—			148,944
Gross Profit	120,175			3,470						123,645
Gross Profit, % of Revenue	44.1		%	1.3		%	—		%	45.4		%
Operating Expenses
Research, development and technical	13,059			—			—			13,059
Selling, general and administrative	53,024			(12,380		)	—			40,644
Total Operating Expenses	66,083			(12,380		)	—			53,703
Operating Income	54,092			15,850			—			69,942
Interest Expense	13,350			—			—			13,350
Interest Income	1,150			—			—			1,150
Other Income (Expense), net	396			—			—			396
Income before income taxes	42,288			15,850			—			58,138
Provision for income taxes	7,585			3,569			511			11,665
Net Income	$	34,703		$	12,281		$	(511	)	$	46,473
Diluted Earnings per share	$	1.17		$	0.42		$	(0.02	)	$	1.57
Weighted Average Diluted Shares Outstanding	29,556			29,556			29,556			29,556
Depreciation & amortization	$	25,732		$	(15,850	)	$	—		$	9,882
EBITDA	$	80,220		$	—		$	—		$	80,220
EBITDA Margin	29.4		%	—			—			29.4		%

CABOT MICROELECTRONICS CORPORATION

Unaudited Reconciliation of Pro Forma Condensed Combined

Statement of Income to Non-GAAP Adjusted Pro Forma Condensed

Combined Statement of Income

For the Nine Months Ended June 30, 2018

(in thousands, except per share data)

				Non-GAAP Adjustments
	Pro Forma			Amortization of Acquisition Related Intangibles			U.S. Tax Reform			Adjusted Pro forma
Revenue	$	784,694		$	—		$	—		$	784,694
Cost of Sales	443,059			(10,335		)	—			432,724
Gross Profit	341,635			10,335			—			351,970
Gross Profit, % of Revenue	43.5		%	1.3		%	—		%	44.9		%
Operating Expenses
Research, development and technical	38,578			—			—			38,578
Selling, general and administrative	155,695			(37,140		)	—			118,555
Total Operating Expenses	194,273			(37,140		)	—			157,133
Operating Income	147,362			47,475			—			194,837
Interest Expense	41,391			—			—			41,391
Interest Income	3,260			—			—			3,260
Other Income (Expense), net	(890		)	—			—			(890		)
Income before income taxes	108,341			47,475			—			155,816
Provision for income taxes	37,462			10,692			(20,255		)	27,899
Net Income	$	70,879		$	36,783		$	20,255		$	127,917
Diluted Earnings per share	$	2.41		$	1.24		$	0.69		$	4.34
Weighted Average Diluted Shares Outstanding	29,459			29,459			29,459			29,459
Depreciation & amortization	$	77,511		$	(47,475	)	$	—		$	30,036
EBITDA	$	223,983		$	—		$	—		$	223,983
EBITDA Margin	28.5		%	—			—			28.5		%

EX-99.2

Third Quarter of Fiscal 2019 Earnings Call August 8, 2019 ©2019 Cabot Microelectronics Corporation

Safe Harbor Statement The information contained in and discussed during this presentation may include “forward- looking statements” within the meaning of federal securities regulations. These forward- looking statements involve a number of risks, uncertainties, and other factors, including those described in Cabot Microelectronics’ filings with the Securities and Exchange Commission (SEC), that could cause actual results to differ materially from those described by these forward-looking statements. Cabot Microelectronics Corporation assumes no obligation to update this forward-looking information. 2 ©2019 Cabot Microelectronics Corporation

Third Quarter Highlights › Record Revenue of $272M; exceeded prior year revenue by $121M, or 81% • Driven by acquisition of KMG Chemicals, Inc. (“KMG”) and growth in CMP pads business › Adjusted Pro Forma Revenue* was essentially flat compared with last year • Driven by growth in CMP pads, electronic chemicals and pipeline performance products • CMP slurries revenue declined due to challenging semiconductor industry conditions › Net Income of $19M; Adjusted Pro Forma Net Income* of $47M, 1% higher compared with prior year, and represents 17% of revenue › Diluted EPS of $0.64; Adjusted Pro Forma EPS* of $1.59, up $0.02, or 1% vs. prior year › Adjusted Pro Forma EBITDA* of $86M, up $6M, or 7%, and represents 31.5% of revenue • Adjusted Pro Forma EBITDA Margin increased 210 basis points over prior year › Continued strong execution in a challenging industry environment; Solid performance of acquired KMG businesses Data reflects rounded values *These adjusted pro forma results are presented as if the company’s acquisition of KMG Chemicals, Inc. (“KMG”) had been consummated on October 1, 2017, and exclude the impact of non-recurring acquisition and integration related costs, acquisition-related amortization expenses, the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act and certain costs related to a warehouse fire at KMG-Bernuth in Tuscaloosa, Alabama. Reference Appendix for Pro Forma to Adjusted Pro Forma reconciliation 3 ©2019 Cabot Microelectronics Corporation

Financial Details Adjusted Pro Forma GAAP Results Results* Comments on Adjusted Results 2019 Q3 2018 Q3 2019 Q3 2018 Q3 Growth in CMP Pads, Electronic Chemicals Revenue $271.9M $150.4M $271.9M $272.6M and Pipeline Performance Products was offset by lower revenue in CMP Slurries Gross Margin 42.4% 53.6% 45.3% 45.4% Net Income $18.9M $35.2M $46.9M $46.5M Diluted EPS $0.64 $1.34 $1.59 $1.57 (+) Lower selling, general and administrative expenses, primarily from synergies EBITDA -------- -------- $85.8M $80.2M (-) Higher tax rate EBITDA Margin -------- -------- 31.5% 29.4% Data reflects rounded values *These adjusted pro forma results are presented as if the company’s acquisition of KMG Chemicals, Inc. (“KMG”) had been consummated on October 1, 2017, and exclude the impact of non-recurring acquisition and integration related costs, acquisition-related amortization expenses, the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act and certain costs related to a warehouse fire at KMG-Bernuth in Tuscaloosa, Alabama. Reference Appendix for Pro Forma to Adjusted Pro Forma reconciliation 4 ©2019 Cabot Microelectronics Corporation

Segment and Business Revenue As Reported Pro Forma* 2019 Q3 2018 Q3 2019 Q3 2018 Q3 Total Revenue $272M $150M $272M $273M Electronic Materials $212M $144M $212M $222M CMP Slurries** $109M $123M $109M $123M CMP Pads $23M $21M $23M $21M Electronic Chemicals $80M - $80M $78M Performance Materials $60M $7M $60M $50M Quarter Highlights: › CMP slurries revenue was negatively impacted by lower demand from memory and foundry customers › Growth in CMP pads revenue continued to be driven by customer adoption, partially offset by industry weakness › Electronic Chemicals revenue benefited from increased demand in advanced logic › Performance Materials revenue growth was driven by pipeline performance products, primarily drag reducing agents (DRA’s) Data reflects rounded values *Pro Forma data represents calculations as if KMG results were included in total company results for the full quarter of each period represented **Includes Electronic Substrates 5 ©2019 Cabot Microelectronics Corporation

Segment Financial Details 2019 Q3 Electronic Materials Revenue $212M Adjusted EBITDA* $71M Adjusted EBITDA Margin 33% Performance Materials Revenue $60M Adjusted EBITDA* $27M Adjusted EBITDA Margin 46% Data reflects rounded values *Adjusted EBITDA for the Electronic Materials and Performance Materials segments is presented in conformity with Accounting Standards Codification Topic 280, Segment Reporting. This measure is reported to the chief operating decision maker for purposes of making decisions about allocating resources to the segments and assessing their performance. For these reasons, this measure is excluded from the definition of non-GAAP financial measures under the SEC’s Regulation G and Item 10(e) of Regulation S-K. 6 ©2019 Cabot Microelectronics Corporation

Balance Sheet and Cash Flow as of June 30, 2019 (unless stated otherwise) › Cash balance of $169M › Year-to-date Operating Cash Flow was $117M • Year-to-Date Capital Expenditures were $33M • Therefore, Year-to-Date Free Cash Flow was $84M › Prepaid $55M of Debt in April • $100M Year-to-Date › Continued appropriate deleveraging of the balance sheet remains a priority • Targeting 2x Net Debt/EBITDA by the end of FY20 Data reflects rounded values 7 ©2019 Cabot Microelectronics Corporation

Closing Remarks › Adjusted Pro Forma Revenue* was essentially flat compared to last year • Driven by growth in CMP pads, electronic chemicals, and pipeline performance products • CMP slurries revenue was negatively impacted by weakness in memory and foundry, but advanced logic remained strong › Adjusted Pro Forma Gross Margin* of 45.3% was essentially flat compared to last year › Adjusted Pro Forma Net Income* of $47M was essentially flat compared to last year › Activities taken through July 2019 to achieve the synergies are expected to deliver $24M annually on a run-rate basis • Delivered $4M in synergies to the third quarter P&L • Approaching goal of $25M of synergies on a run-rate basis ahead of schedule › Earnings accretion of approximately $1 per share from KMG since acquisition Data reflects rounded values *These adjusted pro forma results are presented as if the company’s acquisition of KMG Chemicals, Inc. (“KMG”) had been consummated on October 1, 2017, and exclude the impact of non-recurring acquisition and integration related costs, acquisition-related amortization expenses, the effect of the enactment of the Tax Cuts and Jobs Act in December 2017 in the United States (“tax act”) and the newly issued final regulations related to the tax act and certain costs related to a warehouse fire at KMG-Bernuth in Tuscaloosa, Alabama. Reference Appendix for Pro Forma to Adjusted Pro Forma reconciliation 8 ©2019 Cabot Microelectronics Corporation

Current Financial Guidance 2019 Q4 FY2019 Electronic Materials Revenue Approximately flat* Segment Performance Materials Revenue Approximately flat* Revenue Approximately flat* Adjusted EBITDA $325M-$335M Depreciation and Amortization** $35M-$40M Total Company Interest Expense ~$13M $45M-$46M Tax Rate*** 24%-25% Capital Spending $55M-$60M Data reflects rounded values *Based on sequential changes compared to third quarter of fiscal 2019 **Excludes approximately $60 million in amortization of intangibles related to acquisitions ***Excludes tax impact from acquisitions-related expenses 9 ©2019 Cabot Microelectronics Corporation

Appendix ©2019 Cabot Microelectronics Corporation

Reconciliation of GAAP Net Income to Non-GAAP Adjusted EBITDA (in thousands, except per share and percentage amounts) Quarter Ended June 30, 2019 June 30, 2018 Net Income $18,878 $35,171 Interest expense 12,757 513 Interest income (417) (1,141) Income taxes 20,550 7,873 Depreciation & amortization 26,587 6,410 EBITDA* $78,355 $48,826 Acquisition and integration-related expenses 2,910 Charge for fair value write-up of acquired inventory sold 42 Costs related to Tuscaloosa Fire 4,450 Adjusted EBITDA** $85,757 $48,826 Adjusted EBITDA margin 31.5% 32.5% *EBITDA represents earnings before interest, taxes, depreciation and amortization **Adjusted EBITDA is calculated by excluding items from EBITDA that are believed to be infrequent or not indicative of the company's continuing operating performance 11 ©2019 Cabot Microelectronics Corporation

Pro Forma Condensed Combined Statement of Income For the Three Months Ended June 30, 2019 (in thousands, except per share data) Pro Forma Adjusted Pro Reported Adjustments1 Adjustments2 Combined Forma Revenue $271,882 $271,882 $271,882 Gross Profit 115,390 42 115,432 7,670 123,102 Gross Margin 42.4% 42.5% 45.3% Total Operating Expenses 63,150 3,696 66,846 (20,309) 46,537 Operating Income 52,240 (3,654) 48,586 27,979 76,565 Income before income taxes 39,428 (3,656) 35,772 27,979 63,751 Provision for Income Taxes 20,550 (855) 19,695 (2,827) 16,868 Net Income 18,878 (2,801) 16,077 30,806 46,883 Diluted earnings per share $0.64 ($0.10) $0.54 $1.04 $1.59 Weighted average diluted shares 29,568 29,568 29,568 outstanding 1 Pro forma adjustments are related to non-recurring items directly attributable to the transaction as well as recurring differences related to depreciation, amortization or financing costs that were included as if the companies were combined as of October 1, 2017 2Primarily reflects the elimination of acquisition related amortization expense and non-recurring integration costs 12 ©2019 Cabot Microelectronics Corporation

Pro Forma Condensed Combined Statement of Income For the Three Months Ended June 30, 2018 (in thousands, except per share data) Cabot KMG Pro Forma Adjusted Microelectronics Adjustments1 Adjustments2 Reported Combined Pro Forma Reported Revenue $150,437 $122,152 $272,589 $272,589 Gross Profit 80,700 52,188 (12,713) 120,175 3,470 123,645 Gross Margin 53.6% 42.7% 44.1% 45.4% Total Operating Expenses 38,770 28,214 (901) 66,083 (12,380) 53,703 Operating Income 41,930 23,974 (11,812) 54,092 15,850 69,942 Income before income taxes 43,044 20,953 (21,709) 42,288 15,850 58,138 Provision for Income Taxes 7,873 4,795 (5,083) 7,585 4,080 11,665 Net Income 35,171 16,158 (16,626) 34,703 11,770 46,473 Diluted earnings per share $1.34 $1.02 (1.19) $1.17 $0.40 $1.57 Weighted average diluted 26,319 15,905 29,556 29,556 shares outstanding 1 Pro forma adjustments are related to the reclassification of KMG distribution expenses from operating expenses to cost of sales, in order to conform with Cabot Microelectronics’ accounting policies. In addition, depreciation, amortization, financing and share-based compensation costs were adjusted as if the companies were combined as of October 1, 2017 2Primarily reflects the elimination of acquisition related amortization expense and an incremental tax adjustment related to the U.S. Tax Act 13 ©2019 Cabot Microelectronics Corporation

Thank you for your interest in Cabot Microelectronics Corporation For additional information, please contact: investor_relations@cabotcmp.com 630.499.2600 ©2019 Cabot Microelectronics Corporation