Exhibit 99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION

On April 29, 2016, MKS Instruments, Inc. (the “Company” or “MKS”) completed its acquisition of Newport Corporation (“Newport”) pursuant to an Agreement and Plan of Merger, dated as of February 22, 2016 (the “Merger Agreement”), by and among the Company, PSI Equipment, Inc., a wholly owned subsidiary of the Company, and Newport (the “Newport Merger”). At the effective time of the Newport Merger and pursuant to the terms and conditions of the Merger Agreement, each share of Newport’s common stock that was issued and outstanding immediately prior to the effective time of the Newport Merger was converted into the right to receive $23.00 in cash, without interest and subject to deduction for any required withholding tax.

The aggregate consideration paid by the Company to the former Newport stockholders was approximately $905 million excluding related transaction fees and expenses, the repayment of approximately $93 million of Newport’s U.S. indebtedness outstanding as of immediately prior to the effective time of the Newport Merger and non-cash consideration related to the exchange of share-based awards of approximately $12 million for a total purchase consideration of approximately $1,011 million. The Company funded the payment of the aggregate consideration with a combination of the Company’s available cash on hand and the proceeds from the Company’s senior secured term loan facility as described below.

The following unaudited pro forma condensed combined financial information is based on and derived from the separate historical financial statements of the Company and Newport to illustrate the effect of the acquisition of Newport and gives effect to the assumptions and pro forma adjustments described in the accompanying notes to the unaudited pro forma condensed combined financial statements. The unaudited pro forma condensed combined balance sheet gives effect to the Newport Merger as if it had occurred on December 31, 2015. The unaudited pro forma condensed combined statement of operations gives effect to the Newport Merger as if it had occurred on January 1, 2015. The historical consolidated financial information has been adjusted to give effect to pro forma events that are directly attributable to the acquisition, and factually supportable. The unaudited pro forma condensed combined statement of operations has also been adjusted to give effect to pro forma events that are expected to have a continuing impact on the combined results.

The unaudited pro forma condensed combined financial information was prepared using the acquisition method of accounting with the Company considered the acquirer of Newport. Accordingly, consideration given by the Company to complete the Newport Merger will be allocated to the assets and liabilities of Newport based upon their estimated fair values as of the date of completion of the Newport Merger. Any excess of the consideration over the fair value of assets acquired and liabilities assumed is allocated to goodwill. The final valuations are expected to be completed as soon as practicable but no later than one year after the consummation of the Newport Merger. The purchase price allocations reflected in the unaudited pro forma condensed combined financial statements are preliminary and will be adjusted upon completion of our final valuations of the fair value of the assets and liabilities of Newport as of the effective dates of the Newport Merger, which requires extensive use of accounting estimates and management judgment. Although we believe the fair values assigned to the assets acquired and liabilities assumed reflected in the unaudited pro forma condensed combined financial information are based on reasonable estimates and assumptions using currently available data, the results of the final allocation could be materially different from the preliminary allocations, including, but not limited to, the allocations related to components of working capital, identifiable intangible assets, goodwill, property and equipment, inventory, deferred revenues and deferred income taxes, and any resulting impacts to amortization and income taxes.

The unaudited pro forma condensed combined statement of operations is presented for informational and illustrative purposes in accordance with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and is not necessarily indicative of the operating results or financial position that would have occurred if the acquisition had occurred as of the date or during the periods presented, nor is it necessarily indicative of future operating results or financial position. The unaudited pro forma condensed consolidated statement of operations and the accompanying notes should be read in conjunction with the historical audited consolidated financial statements and notes thereto of MKS for the year ended December 31, 2015 included in MKS’ Annual Report on Form 10-K, filed with the SEC on February 26, 2016, and Newport’s historical audited financial statements and notes thereto for the year ended January 2, 2016, which are incorporated by reference as Exhibit 99.1 to the Current Report on Form 8-K/A.

UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET

AS OF DECEMBER 31, 2015 and JANUARY 2, 2016

See accompanying notes to unaudited pro forma condensed combined financial information.

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF OPERATIONS

FOR THE YEARS ENDED DECEMBER 31, 2015 AND JANUARY 2, 2016

See accompanying notes to unaudited pro forma condensed combined financial information.

Basis of Pro Forma Presentation

Pursuant to the Newport Merger, upon consummation of the Newport Merger, Newport’s restricted stock units and stock appreciation rights were converted to MKS’ restricted stock units and stock appreciation rights. MKS acquired 100% of the outstanding shares of Newport.

The Newport Merger is reflected in the unaudited pro forma condensed combined financial information as an acquisition of Newport by MKS in accordance with Accounting Standards Codification Topic 805, Business Combinations, using the acquisition method of accounting. Under these accounting standards, the total estimated purchase price is calculated as described below, and the assets acquired and the liabilities assumed have been measured at their estimated fair values. The fair value measurements utilize estimates based on key assumptions of the Newport Merger, including historical and current market data. The unaudited pro forma adjustments included herein are preliminary and will be revised as additional information becomes available and as additional analyses are performed. The final purchase price allocation is expected to be completed as soon as practicable but no later than one year after the consummation of the Newport Merger. The final amounts recorded for the Newport Merger may differ materially from the information presented herein.

Under the acquisition method of accounting, the total estimated acquisition consideration is allocated to the acquired tangible and intangible assets and assumed liabilities of Newport based on their fair values as of the acquisition date. Any excess of the acquisition consideration over the fair value of assets acquired and liabilities assumed is allocated to goodwill. The Company expects that all such goodwill will not be deductible for tax purposes. For the purposes of the unaudited pro forma condensed financial statements, MKS has made an allocation of the acquisition consideration as follows:

Term Loan Credit Agreement

In connection with the completion of the Newport Merger, the Company entered into a term loan credit agreement (the “Credit Agreement”) with Barclays Bank PLC, as administrative agent and collateral agent, and the lenders from time to time party thereto, that provided senior secured financing of $780 million, subject to increase in accordance with the Credit Agreement (the “Term Loan Facility”). Borrowings under the Term Loan Facility bear interest per annum at one of the following rates selected by the Company: (a) a base rate determined by reference to the highest of (1) the federal funds effective rate plus 0.50%, (2) the “prime rate” quoted in The Wall Street Journal, (3) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for an interest period of one month adjusted for certain additional costs, plus 1.00%, and (4) a floor of 1.75%, plus, in each case, an applicable margin of 3.00%; or (b) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for the interest period relevant to such borrowing adjusted for certain additional costs, subject to a LIBOR rate floor of 0.75%, plus an applicable margin of 4.00%. The Term Loan Facility was issued with original issue discount of 1.00% of the principal amount thereof.

On June 9, 2016, the Company entered into Amendment No. 1 (the “Repricing Amendment”) to the Credit Agreement, dated as of April 29, 2016, by and among the Company, the lenders party thereto (the “Lenders”) and Barclays Bank PLC, as administrative agent and collateral agent for the lenders. The Repricing Amendment decreased the applicable margin for borrowings under the Company’s Term Loan Facility to 2.50% for base rate borrowings and 3.50% for LIBOR borrowings and extended the period during which a prepayment premium may be required for a “Repricing Transaction” (as defined in the Credit Agreement) until six months after the effective date of the Repricing Amendment. In connection with the execution of the Repricing Amendment, the Company paid a prepayment premium of 1.00%, or $7.3 million, as well as certain fees and expenses of the administrative agent and the Lenders, in accordance with the terms of the Credit Agreement. Immediately prior to the effectiveness of the Repricing Amendment, the Company prepaid $50 million of principal under the Credit Agreement, reducing the outstanding principal under the Credit Agreement from $780 million to $730 million.

Under the Credit Agreement, the Company is required to prepay outstanding term loans, subject to certain exceptions, with portions of its annual excess cash flow as well as with the net cash proceeds of certain asset sales, certain casualty and condemnation events and the incurrence or issuance of certain debt. The Company is also required to make scheduled quarterly payments each equal to 0.25% of the original principal amount of the term loans made on the closing date with such original principal amount reduced by any prepayments (such as the $50 million prepaid to date), with the balance due on the seventh anniversary of the closing date.

All obligations under the Term Loan Facility are guaranteed by certain of the Company’s domestic subsidiaries, and are secured by substantially all of the Company’s assets and the assets of such subsidiaries, subject to certain exceptions and exclusions.

The Credit Agreement contains customary representations and warranties, affirmative and negative covenants and provisions relating to events of default. If an event of default occurs, the Lenders under the Term Loan Facility will be entitled to take various actions, including the acceleration of amounts due under the Term Loan Facility and all actions permitted to be taken by a secured creditor.

Senior Secured Asset-Based Revolving Credit Facility

In connection with the completion of the Newport Merger, the Company also entered into an asset-based credit agreement with Deutsche Bank AG New York Branch, as administrative agent and collateral agent, the other borrowers from time to time party thereto, and the lenders and letters of credit issuers from time to time party thereto (the “ABL Facility”), that provides senior secured financing of up to $50 million, subject to a borrowing base limitation. The borrowing base for the ABL Facility at any time equals the sum of: (a) 85% of certain eligible accounts; plus (b) subject to certain notice and field examination and appraisal requirements, the lesser of (i) the lesser of (A) 65% of the lower of cost or market value of certain eligible inventory and (B) 85% of the net orderly liquidation value of certain eligible inventory and (ii) 30% of the borrowing base; minus (c) reserves established by the administrative agent; provided that until the administrative agent’s receipt of a field examination of accounts receivable the borrowing base shall be equal to 70% of the book value of certain eligible accounts. The ABL Facility includes borrowing capacity in the form of letters of credit up to $15 million. The Company has not drawn against the ABL Facility.

Borrowings under the ABL Facility bear interest per annum at one of the following rates selected by the Company: (a) a base rate determined by reference to the highest of (1) the federal funds effective rate plus 0.50%, (2) the “prime rate” quoted in the The Wall Street Journal, and (3) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for an interest period of one month adjusted for certain additional costs, plus 1.00%, plus, in each case, an initial applicable margin of 0.75%; and (b) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for the interest period relevant to such borrowing adjusted for certain additional costs, plus an initial applicable margin of 1.75%. Commencing with the completion of the first fiscal quarter ending after the closing of the ABL Facility, the applicable margin for borrowings thereunder is subject to upward or downward adjustment each fiscal quarter, based on the average historical excess availability during the preceding quarter.

In addition to paying interest on outstanding principal under the ABL Facility, the Company is required to pay a commitment fee in respect of the unutilized commitments thereunder. The initial commitment fee is 0.375% per annum. Commencing with the completion of the first fiscal quarter ending after the closing of the ABL Facility, the commitment fee is subject to downward adjustment based on the amount of average unutilized commitments for the three-month period immediately preceding such adjustment date. The Company must also pay customary letter of credit fees and agency fees.

NOTES TO THE PRO FORMA CONDENSED COMBINED BALANCE SHEET AND STATEMENT OF OPERATIONS

Unaudited Pro Forma Condensed Combined Balance Sheet

Reclassifications

Pro Forma Adjustments

(i) In connection with the Newport Merger, MKS paid off the outstanding balance of $93.2 million of Newport’s senior secured revolving credit agreement.

(ii) Includes $13.2 million of debt issuance costs and $7.8 million of original issue discount related to the Term Loan Facility. Also, reflects the payment of debt issuance costs of $1.2 million for the ABL Facility.

Unaudited Pro Forma Condensed Combined Statement of Operations

Reclassifications

Pro Forma Adjustments

The interest rate of 4.25% reflects the rate as of June 9, 2016, the date MKS entered into the Repricing Amendment. The amortization of the debt issuance costs includes the impact from amortizing the $7.3 million prepayment premium related to the Repricing Amendment.

If the interest rate of the Company’s Term Loan Facility were to change by 0.125%, the Company’s pro forma interest expense would change by $0.9 million.