Exhibit 99.2

Unaudited pro forma condensed combined financial data

The following unaudited pro forma condensed combined financial statements and related notes present the financial statements of TTM Technologies, Inc. (“TTM”) and Viasystems Group, Inc. (“Viasystems”) as if the proposed acquisition of Viasystems by TTM (the “Merger”) had been consummated at earlier dates. The unaudited pro forma condensed combined balance sheet as of September 29, 2014 gives effect to the Merger as if it had been consummated on September 29, 2014. The unaudited pro forma condensed combined statements of operations for the for the year ended December 30, 2013, the nine months ended September 30, 2013, the nine months ended September 29, 2014, and the 12 months ended September 29, 2014 give effect to the Merger as if it had been consummated on January 1, 2013.

The unaudited pro forma condensed combined income statement for the 12 months ended September 29, 2014 has been derived by taking: (i) the unaudited pro forma condensed combined statement of operations for the year ended December 30, 2013, adding (ii) the unaudited pro forma condensed combined statement of operations for the nine months ended September 29, 2014, and then subtracting (iii) the unaudited pro forma condensed combined statement of operations for the nine months ended September 30, 2013.

The following unaudited pro forma condensed combined financial statements and related notes were prepared using the acquisition method of accounting with TTM considered the acquirer of Viasystems. Accordingly, the consideration to be paid in the Merger ((1) $11.33 in cash, without interest, and (2) 0.706 of a share of TTM common stock, for each share of Viasystems common stock outstanding immediately prior to the effective time of the Merger (excluding each share of Viasystems common stock (a) held in treasury or that is owned, directly or indirectly, by a wholly owned subsidiary of Viasystems, TTM, or Vector Acquisition Corp., a Delaware corporation and a wholly owned subsidiary of TTM, and (b) held by a Viasystems stockholder who shall have demanded properly in writing appraisal for such shares of Viasystems common stock in accordance with the applicable provisions of the Delaware General Corporation Law) (the “Merger Consideration”)) has been allocated to assets and liabilities and noncontrolling interests of Viasystems based upon their estimated fair values as of the date of consummation of the Merger. Any amount of the Merger Consideration that is in excess of the estimated fair values of assets acquired and liabilities assumed and noncontrolling interests will be recorded as goodwill in TTM’s balance sheet after the consummation of the Merger. As of the date hereof , TTM has not completed the detailed valuation work necessary to arrive at the required estimates of the fair value of the Viasystems assets to be acquired and the liabilities to be assumed and noncontrolling interests and the related allocation of purchase price, nor has TTM identified all adjustments necessary to conform Viasystems’ accounting policies to TTM’s accounting policies. A final determination of the fair value of Viasystems’ assets and liabilities will be based on the actual net tangible and intangible assets and liabilities of Viasystems that exist as of the date of consummation of the Merger and, therefore, cannot be made prior to that date. Additionally, the value of a portion of the Merger Consideration to be paid by TTM to consummate the Merger will be determined based on the trading price of TTM common stock at the time of the consummation of the Merger. Accordingly, the accompanying unaudited pro forma purchase price allocation is preliminary and is subject to further adjustments as additional information becomes available and as additional analyses are performed. The preliminary unaudited pro forma purchase price allocation has been made solely for the purpose of preparing the following unaudited pro forma condensed combined financial statements. The preliminary purchase price allocation was based on TTM’s historical experience, data that was available through the public domain, and TTM’s limited due diligence review of Viasystems’ business. Until the Merger is consummated, both companies are limited in their ability to share information with the other. Upon consummation of the Merger, valuation work will be performed. Increases or decreases in the fair value of relevant balance sheet amounts will result in adjustments to the balance sheet and/or statements of operations until the purchase price allocation is finalized, which may not occur until one year after consummation of the Merger. There can be no assurance that such finalization will not result in material changes from the preliminary purchase price allocation included in the following unaudited pro forma condensed combined financial statements, and the impact of any such changes in the purchase price allocation may have a material impact on the statement of operations.

The following unaudited pro forma condensed combined financial statements and related notes do not purport to represent what the actual consolidated results of operations or the consolidated balance sheet of TTM would have been had the Merger occurred on the dates assumed, nor are they necessarily indicative of TTM’s future consolidated results of operations or consolidated financial position. The unaudited pro forma condensed combined financial statements are based upon currently available information and estimates and assumptions that TTM believes are reasonable as of the date hereof. Any of the factors underlying these estimates and assumptions may change or prove to be materially different, and the estimates and assumptions may not be representative of facts existing at the consummation of the Merger. Key adjustments reflected in these unaudited pro forma condensed combined financial statements include the following:

The historical financial information has been adjusted to give pro forma effect to events that are (1) directly attributable to the Merger, the entry into the agreements governing, and any borrowings under, a proposed $765.0 million senior secured term loan facility (the “Term Loan Facility”), a proposed $150.0 million senior secured asset-based revolving credit facility (the “ABL Facility,” and, together with the Term Loan Facility, the “Senior Secured Credit Facilities”), and a proposed asset-based revolving credit facility with expected commitments of up to $150.0 million (the “Asia ABL Facility”), TTM’s proposed offering of up to $350.0 million in aggregate principal amount of senior secured notes due 2023 (the “Notes”), the performance of TTM’s obligations under an escrow agreement, and the use of proceeds therefrom, including the refinancing of the debt of Viasystems and a portion of TTM debt (the “Transactions”), (2) factually supportable, and (3) expected to have a continuing impact on the combined financial operating results of TTM and Viasystems. The unaudited pro forma condensed combined statements of operations do not reflect (1) any operating efficiencies, cost savings, or revenue enhancements that may be achieved by the combined company, and (2) certain nonrecurring expenses, such as potential cash and noncash restructuring charges, expected to be incurred in connection with achieving such operating efficiencies and cost savings, as well as costs relating to integration plans. The unaudited pro forma condensed combined financial data also assumes that TTM will finance the Merger through existing cash on hand at September 29, 2014, together with the net proceeds from the Notes offering and the Term Loan Facility.

TTM has preliminarily reviewed Viasystems’ accounting policies and determined that it will be necessary to harmonize differences in some policies. These unaudited pro forma condensed combined financial statements do not assume any differences in accounting policies, although TTM does not believe the impact of these harmonization adjustments will be material.

The following unaudited pro forma condensed combined financial statements have been developed from and should be read in conjunction with the separate historical consolidated financial statements and accompanying notes of TTM and Viasystems.

The unaudited pro forma condensed combined financial data is presented for informational purposes only and does not purport to represent what the combined company’s actual combined balance sheet or combined statements of operations would have been had the Transactions actually occurred on the dates indicated, nor are they necessarily indicative of our future combined results of operations or combined financial condition. The unaudited pro forma condensed combined financial data should be read in conjunction with the notes accompanying such unaudited pro forma condensed combined financial data, as well as the audited and unaudited financial statements and related notes thereto incorporated by reference herein.

All pro forma adjustments and their underlying assumptions are described more fully in the notes to the unaudited pro forma condensed combined financial data.

TTM operates on a 52 or 53 week year ending on the Monday nearest December 31. Viasystems uses a calendar accounting fiscal period. For 2013, TTM’s accounting period ended December 30, 2013, while Viasystems’ accounting period ended December 31, 2013. For 2014, TTM’s nine month accounting period ended September 29, 2014, while Viasystems’ accounting period ended September 30, 2014. No pro forma adjustments were made to reconcile the accounting periods, as TTM believes that the one-day difference is immaterial to the presentation of the operating results of the combined company.

Certain reclassifications have been made to Viasystems’ historical amounts to conform to TTM’s presentation.

Unaudited pro forma condensed combined balance sheet

As of September 29, 2014

Unaudited pro forma condensed combined statement of operations

For the year ended December 30, 2013

Unaudited pro forma condensed combined statement of operations

For the nine months ended September 30, 2013

Unaudited pro forma condensed combined statement of operations

For the nine months ended September 29, 2014

Unaudited pro forma condensed combined statement of operations

For the 12 months ended September 29, 2014

Notes to unaudited pro forma condensed combined financial statements

(dollars in thousands)

Note 1. Basis of presentation

On September 22, 2014, TTM announced the proposed Merger. Under the terms of the Merger, Viasystems stockholders will receive approximately $246,172 in cash and approximately 15,340,000 shares of TTM common stock. Additionally, in connection with the consummation of the Merger, TTM will assume and expects to refinance Viasystems’ debt, which was approximately $630,837, net of premiums, as of September 29, 2014.

The preliminary purchase price of the Merger is approximately $992,516, estimated as follows (in thousands):

Under the acquisition method of accounting, the purchase price will be allocated to the assets and liabilities of Viasystems based on the estimated fair value of assets acquired and liabilities assumed and noncontrolling interest at the date of consummation of the Merger. The preliminary allocation of the purchase price is summarized below (in thousands):

The value of the shares of TTM common stock used in determining the purchase price was $7.53 per share, the closing price of TTM common stock on December 31, 2014. If TTM’s stock price were to increase or decrease by $1.00, the purchase price would change by approximately $15.3 million; however, the number of shares of TTM common stock and the amount of cash TTM pays in the Merger would not change.

The determination of the allocation of the purchase price is preliminary, as the proposed Merger has not yet been consummated and additional information and analysis will be required to finalize the purchase price allocation. The final determination of the purchase price allocation will be based on the fair value of assets acquired, including fair values of other identifiable intangibles and the fair value of liabilities assumed and noncontrolling interests as of the date that the Merger is consummated. The excess purchase price over the fair value of identifiable assets acquired, liabilities assumed, and noncontrolling interests will be allocated to goodwill.

The final determination of the purchase price allocation is expected to be completed as soon as practicable following consummation of the Merger. The final amounts allocated to assets acquired, liabilities assumed, and noncontrolling interests could materially differ from the information presented in the unaudited pro forma condensed combined financial statements.

Note 2. Pro forma adjustments

Pro forma adjustments are necessary to reflect estimated preliminary amounts for (1) the purchase price, (2) Viasystems’ net tangible and intangible assets at an amount equal to the preliminary estimates of their fair values, (3) amortization expense related to the estimated amortizable intangible assets, (4) the issuance of debt and related interest expense, and (5) the income tax effect related to the pro forma adjustments.

There were no intercompany balances or transactions between TTM and Viasystems as of the dates and for the periods of these unaudited pro forma condensed combined financial statements.

The unaudited pro forma combined provision for income taxes does not necessarily reflect the amounts that would have resulted had TTM and Viasystems filed consolidated income tax returns during the periods presented. The pro forma combined provision for income taxes assumes the deferred income tax liability related to purchase price basis adjustments will be fully offset by existing Viasystems deferred tax assets via the partial release of the valuation allowance. The pro forma combined provision for income taxes also does not include the impact of potential reversals of the valuation allowance for deferred tax assets of Viasystems and TTM. The final determination of the Viasystems and TTM valuation allowance is dependent upon procedures that have yet to commence; therefore, the final amounts recorded at the date of consummation of the Merger could be material to the presentation of our financial statements. TTM is currently unable to estimate the impact of the deferred tax liability for international jurisdictions.

The historical financial information has been adjusted to give pro forma effect to events that are (1) directly attributable to the Transactions, (2) factually supportable, and (3) expected to have a continuing impact on the combined financial operating results of TTM and Viasystems. The unaudited pro forma condensed combined statements of operations do not reflect (1) any operating efficiencies, cost savings, or revenue enhancements that may be achieved by the combined company, and (2) certain nonrecurring expenses, such as potential cash and noncash restructuring charges, expected to be incurred in connection with achieving such operating efficiencies and cost savings, as well as costs relating to integration plans. The unaudited pro forma condensed combined financial data also assumes that TTM will finance the Merger through existing cash on hand at September 29, 2014, together with the net proceeds from the Notes offering and the Term Loan Facility. TTM and Viasystems are in the process of making these assessments, and estimates of these liabilities are not currently known.

TTM has not identified any material pre-acquisition contingencies deemed probable and that can be reasonably estimated. Prior to the final purchase price allocation, if information becomes available that would indicate it is probable that such events have occurred and the amounts can be reasonably estimated, such items will be included in the purchase price allocation.

For purposes of these unaudited pro forma condensed combined financial statements, TTM has included as a component of the total Merger Consideration the amount in cash to be paid and the number of shares of TTM common stock to be issued in settlement of any employee share-based payment awards which will be deemed to automatically vest immediately prior to the effective time of the Merger. The final determination of the amounts paid with respect to such share-based payment awards to be attributed to pre-combination services or post-combination services is dependent upon procedures that have yet to commence; therefore, the final amounts recorded at the date of consummation of the Merger may differ from the information presented herein, and such differences could be material.

For purposes of this unaudited pro forma condensed combined financial data, TTM has assumed the carrying value of property, plant, and equipment approximates fair value. The final determination of fair value is dependent upon procedures and other studies that have yet to commence; therefore the final amounts recorded at the date of consummation of the Merger may differ from the information presented herein, and such differences could be material.

Pro forma condensed combined balance sheet adjustments

The reduction of retained earnings reflects the sum of (1) estimated Merger-related costs of $27,750, (2) estimated refinancing costs of $56,600, and (3) the write-off of debt issuance costs of TTM of $1,323.

The incremental debt issuance costs are comprised of the estimated debt issuance costs for the Senior Secured Credit Facilities and the Notes offering, less historical debt issuance costs of $13,960 for Viasystems and $1,323 for TTM. The TTM portion of historical debt issuance costs will be expensed.

Pro forma condensed combined statement of operations adjustments

Assuming an aggregate weighted average useful life of seven years, and the amortization methods discussed above, for every additional $1,000 allocated to identified intangible assets, pre-tax earnings would decrease by $143 for both the year ended December 30, 2013 and the last 12 months ended September 29, 2014, and $107 for both the nine months ended September 29, 2014 and September 30, 2013.

Contractual cash interest represents estimated interest for the Notes offering and the Term Loan Facility at a weighted average rate of 6.21%. Debt issuance costs in the amount of $33,325 are to be amortized at a weighted average useful life of 6.9 years. Unused commitment fees are estimated using 3/8^th percentage point on the unused portion of both the ABL Facility and the Asia ABL Facility. We do not currently expect to draw on either facility at the closing of the Merger.

The effect of a 1/8th percentage point variance in the weighted average interest rate on pre-tax earnings would be $1,394 for both the year ended December 30, 2013 and the last 12 months ended September 29, 2014, and $1,045 for both of the nine months ended September 29, 2014 and September 30, 2013.

Historical Viasystems debt and $273,800 of TTM debt consist of senior secured notes and bank loans at varying interest rates. For purposes of these pro forma condensed combined financial statements, estimated maturities of total pro forma combined long-term debt are as follows: $7,650 for each of the years 1 through 6 and the remaining outstanding balance due at maturity.