Exhibit 99.3

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

The Unaudited Pro Forma Condensed Combined Financial Statements (referred to as the “pro forma financial statements”) presented below are derived from the historical consolidated financial statements of NN, Inc. (“NN”, “we”, “our” or “us”) and Precision Engineered Products Holdings, Inc. (“PEP”).

On August 17, 2015, we entered into a stock purchase agreement with PEP and PEP Industries, LLC (“PEP Industries”). On October 19, 2015, we completed our acquisition of PEP (the “Acquisition”). As a result of the Acquisition, PEP became our wholly owned subsidiary.

The Unaudited Pro Forma Condensed Combined Statements of Income presented below (the “pro forma statements of income”) for the nine months ended September 30, 2015 and the year ended December 31, 2014, give effect to the Acquisition as if it was consummated on January 1, 2014. The Unaudited Pro Forma Condensed Combined Balance Sheet presented below (the “pro forma balance sheet”) as of September 30, 2015, gives effect to the Acquisition as if it was consummated on September 30, 2015.

Our historical consolidated financial information has been adjusted in the pro forma financial statements to give effect to pro forma events that are: (i) directly attributable to the Acquisition; (ii) factually supportable; and (iii) with respect to the pro forma statements of income, expected to have a continuing impact on our and PEP’s combined results. Our historical consolidated financial information for the year ended December 31, 2014 has also been adjusted in the pro forma financial statements to give effect to pro forma impacts of our acquisition of Autocam Corporation, which we completed on August 29, 2014 (the “Autocam Merger”) as if it was consummated on January 1, 2014.

Assumptions and estimates underlying the pro forma adjustments are described in the accompanying notes, which should be read in connection with the pro forma financial statements.

In accordance with ASC 805, Business Combinations (“ASC 805”), the Acquisition is being accounted for under the acquisition method with us as the acquirer of PEP. As of the date hereof, we have not completed the detailed valuation work necessary to arrive at the required estimates of the fair value of PEP’s assets to be acquired, the liabilities to be assumed and the related allocation of purchase price; however, for purposes of these pro forma financial statements, preliminary allocation estimates based on information known to us as of the date of this report have been included. The final fair values of the assets acquired and liabilities assumed as of the date of the Acquisition may differ materially from the information presented herein.

The pro forma financial statements have been presented for illustrative purposes only and do not reflect the impact of synergies resulting from the Acquisition. We expect to incur significant costs and achieve significant synergies in connection with integrating PEP’s operations with our operations. The pro forma financial statements do not reflect the costs of any integration activities or benefits that may result from realization of future cost savings from operating efficiencies, or any revenue, tax, or other synergies expected to result from the Acquisition. In addition, certain nonrecurring items, such as transaction costs directly attributable to the Acquisition, have been excluded from the pro forma statements of income. Additionally, no adjustments were made to reflect termination costs to be incurred in connection with the Acquisition, as such costs are not currently factually supportable.

The pro forma financial statements reflect the following transactions, which took place in 2015: (i) our entry into a new senior secured term loan facility in the amount of up to $525.0 million with a seven year maturity (the “New Term Loan Credit Facility”); (ii) entry into a new senior secured revolving credit facility in the amount of up to $100.0 million with a five year maturity (together with the New Term Loan Credit Facility, the “New Senior Credit Facilities”); (iii) the issuance of $300.0 million of 10.25% senior notes due 2020 (the “Notes”); (iv) the incremental term loan of $50.0 million made on November 9, 2015, the proceeds of which were used to repurchase approximately $50.0 million of the Notes. Proceeds from the New Term Loan Credit Facility and the Notes were used to finance the purchase price of the Acquisition.

These pro forma financial statements are for informational purposes only. They do not purport to indicate the results of operations and financial position that would have been achieved had the pro forma events taken place on the dates indicated, or the future consolidated results of operations or financial position of the combined company.

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The pro forma financial statements should be read in conjunction with:

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NN, INC. AND PRECISION ENGINEERED PRODUCTS HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF INCOME

For the Year Ended December 31, 2014

(In thousands, except share and per share data)

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NN, INC. AND PRECISION ENGINEERED PRODUCTS HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF INCOME

For the Nine Months Ended September 30, 2015

(In thousands, except share and per share data)

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NN, INC. AND PRECISION ENGINEERED PRODUCTS HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET

As of September 30, 2015

(In thousands, except share and per share data)

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NOTES TO THE UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

NOTE 1. DESCRIPTION OF TRANSACTION AND BASIS OF PRESENTATION

On August 17, 2015, we entered into a stock purchase agreement with PEP Industries, LLC (“PEP Industries”) and Precision Engineered Products Holdings, Inc.(“PEP”), pursuant to which we agreed to purchase all of the outstanding capital stock of PEP (the “Acquisition”). As a result of the Acquisition, PEP became a wholly owned subsidiary of NN. The aggregate consideration paid in connection with the Acquisition was approximately $615.0 million in cash (the “Purchase Price”). Funds received from the New Term Loan Credit Facility and the Notes were used, together with cash on hand, to finance the Purchase Price of the Acquisition, to pay certain fees and expenses in connection therewith and to refinance certain of our and PEP’s existing indebtedness.

The pro forma financial statements included herein have been derived from our and PEP’s historical consolidated financial statements. Additionally, certain financial statement line items included in PEP’s historical presentation have been disaggregated or condensed to conform to corresponding financial statement line items included in our historical presentation. These reclassifications are reported in the pro forma financial statements under the column titled “Reclassification to Presentation of Historical PEP” and as discussed in the following two paragraphs.

Within the pro forma statements of income, we have made certain changes in presentation to conform PEP’s financial presentation to our financial statement presentation. Depreciation expense, which was historically reflected in cost of products sold in PEP’s historical financial statements, has been reclassified and presented within the caption “depreciation and amortization.” Depreciation expense, which was historically reflected in selling, general and administrative expense in PEP’s historical financial statements has been reclassified and presented within the caption depreciation and amortization. Amortization expenses of intangible assets, which were historically reflected in selling, general and administrative expense in PEP’s historical financial statements, have been reclassified and presented within the caption depreciation and amortization.

Within the pro forma balance sheet we have made the following reclassifications to conform PEP’s financial statement presentation to our financial statement presentation: income taxes receivable have been reclassified from the caption “Other current assets” to “Income taxes receivable, net,” deferred financing costs have been reclassified from the caption “intangible assets, net” to “other non-current assets;” accrued salaries, wages and benefits payable have been reclassified from the caption “other current liabilities” to their own captions presented on the face of the balance sheet. Additionally, in preparing the condensed consolidated balance sheet for PEP within the pro forma financial statements, we aggregated the caption “revolver” within “current maturities of long-term debt;” and aggregated the captions “accrued expenses” within the caption “other current liabilities.” The reclassification and aggregations of these items had no significant impact on the historical total assets, total liabilities, or stockholders’ equity reported by us or PEP, respectively. The reclassifications and aggregations also did not impact the historical earnings from continuing operations.

Additionally, the pro forma statement of income for the year ended December 31, 2014 gives effect to the Autocam Merger, which was completed on August 29, 2014; the result of operations of Autocam have been consolidated in our results from that date. Certain financial statement line items included in Autocam’s historical presentation have been disaggregated or condensed to conform to corresponding financial statement line items included in our historical presentation. These reclassifications are reported in the pro forma financial statements under the column titled “Reclassification to Presentation of Historical Autocam” and as discussed in the following paragraph.

Within the pro forma statements of income, we have made certain changes in presentation to conform Autocam’s financial presentation to our financial statement presentation. Depreciation expense and loss (gain) on disposal of fixed assets which were historically reflected in cost of products sold in Autocam’s historical financial statements have been reclassified and presented within the captions depreciation and amortization and loss on disposal of assets, respectively. Depreciation expense, which was historically reflected in selling, general and administrative expense in Autocam’s historical financial statements, has been reclassified and presented within the caption depreciation and amortization. Additionally, stock based compensation expense reported under a separate caption with the same name was reclassified to the caption selling, general and administrative.

The Acquisition is recorded within the pro forma financial statements under the acquisition method of accounting, in accordance with business combination accounting guidance under GAAP. Under these accounting standards, the assets acquired and the liabilities assumed will be measured at estimated fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The unaudited pro forma adjustments included herein are preliminary. As of the date hereof, we have not completed the detailed valuation work necessary to arrive at the required estimates of the fair value of PEP’s assets to be acquired, the liabilities to be assumed and the related allocation of purchase price. The final fair values of the assets acquired and liabilities assumed once finalized may differ materially from the information presented. Unless otherwise noted, all numbers contained in the pro forma financial statements are in thousands.

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Acquisition-related transaction costs are not included as components of consideration transferred but are accounted for as expenses in the period in which the costs are incurred.

The pro forma financial statements are based upon historical information after giving effect to the Acquisition and adjustments described in these footnotes. The pro forma balance sheet is presented as if the Acquisition had occurred on September 30, 2015; the pro forma statements of income for the nine-months ended September 30, 2015 and for the year ended December 31, 2014, give effect to the Acquisition as if it occurred on January 1, 2014.

The pro forma financial statements do not reflect ongoing cost savings that we expect to achieve as a result of the Acquisition or the costs necessary to achieve these costs savings or synergies. Additionally, historical unaudited condensed consolidated interim financial statements of PEP as of and for the nine months ended September 25, 2015 include a $3,200 gain relating to the decrease in the fair value of its potential earn out contingent liability (the “Earn-out Liability”) owed by PEP to certain persons that had previously sold certain business units to PEP prior to the acquisition date. This gain will not have a recurring impact on the earnings of the Company post-acquisition however it has not been adjusted out of the pro forma statement of income as it is not directly attributable to the transaction.

NOTE 2. CONSIDERATION TRANSFERRED AND PRELIMINARY PURCHASE PRICE ALLOCATION

The Acquisition has been accounted for using the acquisition method of accounting in accordance with ASC 805, which requires, among other things, that the assets acquired and liabilities assumed be recognized at their acquisition date fair values, with any excess of the consideration transferred over the estimated fair values of the identifiable net assets acquired recorded as goodwill. The consideration transferred by us in the Acquisition was approximately $615,000 in cash, excluding cash acquired and including the settlement of pre-acquisition PEP indebtedness. The consideration transferred is subject to customary purchase price adjustments.

The following is a summary of the preliminary estimated fair values of the net assets acquired assuming the Acquisition closed on September 30, 2015:

We have made preliminary allocation estimates based on the information known to us as of the date of this report. We expect the final determination of the purchase price allocation will include, but will not be limited to, valuations with respect to inventory, fixed assets, customer relationships, technology know how, trade names and other potential intangible assets. The valuations will consist of physical appraisals, discounted cash flow analyses and other appropriate valuation techniques to determine the fair value of the assets acquired and liabilities assumed.

The final, as-adjusted amounts allocated to assets acquired and liabilities assumed in the Acquisition will be based off the fair value of the net assets acquired at the Acquisition date and could differ materially from the preliminary amounts presented in these pro forma financial statements as of September 30, 2015. A decrease in the fair value of assets acquired, or an increase in the fair value of liabilities assumed, from those preliminary valuations presented in these pro forma financial statements would result in a dollar-for-dollar corresponding increase in the amount of goodwill that will result from the Acquisition. In addition, if the value of the acquired assets is higher than the preliminary values above, it may result in higher amortization and depreciation expense than is presented in these pro forma financial statements.

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NOTE 3. ADJUSTMENTS TO UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS—PEP ACQUISITION

The unaudited pro forma adjustments included in the pro forma financial statements are as follows:

Adjustments to Unaudited Pro Forma Condensed Combined Statements of Income

Depreciation expense has been estimated based upon the nature of activities associated with the property and equipment assets acquired. With other assumptions held constant, a 10% change in the fair value adjustment for property, plant and equipment would increase/decrease annual pro forma depreciation and amortization expense by approximately $448.

The estimated fair value of amortizable intangible assets is expected to be amortized over the preliminary estimated useful lives that will generally range from eight years for the trade name intangible assets and twelve years for customer relationships, subject to the finalization of the purchase price allocation. The amortizable life for each category of asset was based on the duration of the estimated cash flows for each asset. The estimated amortizable life of customer relationships was determined after consideration of PEP’s historical customer buying and attrition patterns. With other

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assumptions held constant, a 10% change in the fair value adjustment for amortizable intangible assets would increase/decrease annual pro forma amortization by approximately $1,966. The pro forma statements of income do not reflect the related amortization of the backlog and unfavorable leases of $7,690 ($4,998 net of tax) for the estimated purchase accounting adjustment to intangibles as this amount is not expected to have a continuing impact on our operations.

The U.S. federal statutory tax rate of 35% has been applied to the unaudited pro forma depreciation and amortization adjustments and the transaction related expenses recognized by us and PEP for all periods presented.

Adjustments to Unaudited Pro Forma Condensed Combined Balance Sheet

The $36,016 of estimated transaction related expenses include $25,612 of financing fees, and $2,136 in insurance premiums for representation and warranty insurance and environmental insurance all of which will be capitalized in other non-current assets. Additionally, the total includes advisory and other transaction related costs of $8,268 which will be expensed as incurred.

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This balance includes $2,136 of estimated prepaid insurance premiums for representation and warranty and environmental insurance. These insurance policies were obtained to cover potential breaches by PEP or PEP Industries to their representations and warranties and potential existing adverse environmental conditions unknown to us and PEP or PEP Industries at the closing of the Acquisition. Also, we are entitled to indemnification, to the extent required, for payments up to $5,000 related to the potential earn out contingent liability (the “Earn-out Liability”) owed by PEP to certain persons that had previously sold certain business units to PEP. This balance includes $1,500 representing the non-current portion of the related indemnified assets. Additionally, in conjunction with the Refinancing Transaction, the balance includes the write-off of $14,868 of unamortized deferred financing costs. The Company has not reflected this write-off as a pro forma adjustment to the pro forma statement of income as this is directly related to the Refinancing Transaction and not expected to have a continuing impact on the operations of the Company.

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The unaudited pro forma adjustments to debt are classified between short-term borrowings (due within one year) and long-term borrowings as follows:

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NOTE 4. ADJUSTMENTS TO UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS—AUTOCAM MERGER

The unaudited pro forma adjustments included in the pro forma financial statements relating to the Autocam Merger are as follows:

Adjustments to Unaudited Pro Forma Condensed Combined Statements of Income

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To calculate the pro forma adjustment to provision (benefit) for income taxes due to additional depreciation and amortization for the year ended December 31, 2014, Autocam’s blended global effective tax rate of 26% has been applied to the unaudited pro forma depreciation and amortization adjustments. The blended rate was used as these expenses are expected to be incurred both in and outside of the United States.

Transaction related expenses recognized by us and Autocam during the year ended December 31, 2014, have been eliminated from the pro forma statements of income using the NN and Autocam U.S. blended statutory tax rate of 35%.

NOTE 5. REFINANCING TRANSACTIONS

As a result of entering into the New Senior Credit Facilities, the issuance of the Notes, the additional borrowing under an incremental term loan of an aggregate principal amount of $50,000, and the use of such proceeds to repurchase approximately $50,000 of the principal amount of the Notes, an adjustment was made to the unaudited pro forma condensed combined statements of income to reflect the additional expense that would have been incurred during the historical periods presented assuming the Acquisition had occurred as of January 1, 2014 for the year ended December 31, 2014 and the nine months ended September 30, 2015. The additional interest expense to be incurred by us as a result of the new borrowings is as follows:

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The interest rates applicable to borrowings under the New Senior Credit Facilities are based on a fluctuating rate of interest measured by reference to either, at NN’s option, (i) a base rate, plus an applicable margin, or (ii) the greater of the London Interbank Offered Rate (“LIBOR”) or 1.0%, plus an applicable margin. The initial applicable margin for all borrowings under the New Term Loan Credit Facility is 3.75% per annum with respect to base rate borrowings and 4.75% per annum with respect to LIBOR borrowings. The initial applicable margin for New Revolving Loan Credit Facility borrowings is 2.50% per annum with respect to base rate borrowings and 3.50% per annum with respect to LIBOR borrowings, which shall be in effect until NN provides the lenders with a compliance certificate, as required by the Credit Agreement. Thereafter, the applicable margin shall be determined by reference to a ratio of NN’s consolidated leverage ratio, as such term is defined in the Credit Agreement. The interest rate applicable to the Notes is a fixed 10.25%.

A change of 1/8% (12.5 basis points) in the interest rate would result in an aggregate change of $719 in annual interest expense for the New Term Loan Credit Facility.

To calculate the pro forma adjustment to provision (benefit) for income taxes due to additional interest expense, the U.S. federal statutory tax rate of 35% has been applied to the pro forma interest expense adjustments. The U.S. statutory tax rates were used as the additional interest expense resulting from the Acquisition is expected to be incurred in the U.S.

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