Dorman Products, Inc. ("Dorman", the "Company", “we”, “us”, or “our”) is a supplier of replacement parts and fasteners for passenger cars and light-, medium-, and heavy-duty trucks in the automotive aftermarket industry.

We operate on a 52-53-week period ending on the last Saturday of the calendar year. The fiscal years ended December 25, 2021 (“fiscal 2021”), December 26, 2020 (“fiscal 2020”) and December 28, 2019 (“fiscal 2019”) were each 52-week periods.

Principles of Consolidation. The Consolidated Financial Statements include our accounts and the accounts of our wholly owned subsidiaries. All material intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates in the Preparation of Financial Statements. The preparation of financial statements in accordance with accounting principles generally accepted in the United States (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents. We consider all highly liquid short-term investments with original maturities of three months or less to be cash equivalents.

Sales of Accounts Receivable. We have entered into several customer-sponsored programs administered by unrelated financial institutions that permit us to sell certain accounts receivable at discounted rates to the financial institutions. Transactions under these programs were accounted for as sales of accounts receivable and were removed from our Consolidated Balance Sheet at the time of the sales transactions. During fiscal 2021, fiscal 2020 and fiscal 2019, we sold $935.8 million, $740.0 million and $676.4 million, respectively, under these programs. Selling, general and administrative expenses include financing costs associated with these accounts receivable sales programs of $11.7 million, $13.2 million and $16.7 million in fiscal 2021, fiscal 2020 and fiscal 2019, respectively. Financing costs are impacted both by interest rates and the timing of when accounts receivable are sold in comparison to the original due dates of those accounts receivable.

Inventories. Inventories are stated at the lower of cost or net realizable value. Cost is determined by the first-in, first-out method. Inventories include the cost of material, freight, direct labor and overhead utilized in the processing of our products. We provide reserves for discontinued and excess inventory based upon historical demand, forecasted usage, estimated customer requirements and product line updates.

Property, Plant and Equipment. Property, plant and equipment are recorded at cost and depreciated over the estimated useful lives, which range from 3 to 39 years, using the straight-line method for financial statement reporting purposes and accelerated methods for income tax purposes. The costs of maintenance and repairs are expensed as incurred. Renewals and betterments are capitalized. Gains and losses on disposals are included in operating results.

Buildings and building improvements		10 to 39 years
Machinery, equipment and tooling		3 to 7 years
Software and computer equipment		3 to 10 years
Furniture, fixtures and leasehold improvements		7 to 39 years

Long-Lived Assets Including Goodwill and Other Acquired Intangible Assets. Long-lived assets, including property, plant, and equipment and amortizable identifiable intangibles, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or asset group may not be recoverable. The impairment review is a two-step process. First, recoverability is measured by comparing the carrying amount of an asset to the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount exceeds the estimated undiscounted future cash flows, the second step of the impairment test is performed, and an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds its fair value. The assets and liabilities of a disposal group classified as held for sale would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and would no longer be depreciated.

Goodwill is reviewed for impairment on an annual basis or whenever events or changes in circumstances indicate the carrying value of the goodwill may be impaired. For the annual test, we have the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If we determine it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then performing the two-step impairment test is unnecessary. During fiscal 2021 and fiscal 2020, we assessed the qualitative factors which could affect the fair values of our reporting unit and determined that it was not more likely than not that the fair value of our reporting unit was less than its carrying amount.

Purchase Accounting. The purchase price of an acquired business is allocated to the underlying tangible and intangible assets acquired and liabilities assumed based upon their respective fair market values, with the excess recorded as goodwill. Such fair market value assessments require judgments and estimates which may change over time and may cause the final amounts to differ materially from their original estimates. These adjustments to fair value assessments are recorded to goodwill over the purchase price allocation period which cannot exceed 12 months from the date of acquisition.

Other Assets. Other assets include primarily long-term core inventory, deposits, and equity method investments.

Certain products we sell contain parts that can be recycled, or as more commonly referred to in our industry, remanufactured. We refer to these parts as cores. A used core is remanufactured and sold to the customer as a replacement for a unit inside a vehicle. Customers and end-users that purchase remanufactured products will generally return the used core to us, which we then use in the remanufacturing process to make another finished good. Our core inventory consists of used cores purchased and held in our facilities, used cores that are in the process of being returned from our customers and end-users, and remanufactured cores held in finished goods inventory at our facilities. Our products that utilize a core primarily include instrument clusters, hybrid batteries, radios, and climate control modules.

Long-term core inventory was $20.8 million and $19.6 million as of December 25, 2021 and December 26, 2020, respectively. Long-term core inventory is recorded at the lower of cost or net realizable value. Cost is determined based on actual purchases of core inventory. We believe that the most appropriate classification of core inventory is a long-term asset. According to guidance provided under the Financial Accounting Standards Board Accounting Standards Codification (“ASC”), current assets are defined as “assets or resources commonly identified as those which are reasonably expected to be realized in cash or sold or consumed during the normal operating cycle of the business.” The determination of the long-term classification is based on our view that the value of the cores is not expected to be consumed or realized in cash during our normal annual operating cycle.

We have investments that we account for according to the equity method of accounting. The total book value of these investments was $9.4 million and $8.5 million as of December 25, 2021 and December 26, 2020, respectively. These investments provided us $4.6 million, $1.3 million and $3.2 million of income during fiscal 2021, fiscal 2020, and fiscal 2019, respectively. In January 2020, we

acquired the remaining 60% of the outstanding stock of Power Train Industries, Inc. (“PTI”), a privately-held supplier of parts to the automotive aftermarket, based in Reno, Nevada of which we held equity investments with a fair value of $12.3 million. Additionally, we have an investment that we account for according to the cost method of accounting. The carrying book value of this investment was $5.0 million as of both December 25, 2021 and December 26, 2020.

Other Accrued Liabilities. Other accrued liabilities include primarily accrued commissions, accrued income taxes, insurance liabilities, product warranties, and other current liabilities. We warrant our products against certain defects in material and workmanship when used as designed on the vehicle on which it was originally installed. We offer a limited lifetime warranty on most of our products. Our warranty limits the end-user’s remedy to the repair or replacement of the part that is defective. Product warranty reserves were immaterial as of December 25, 2021 and December 26, 2020 and are based upon experience and forecasts using the best historical and current claim information available. Provisions and payments related to end-user product warranty reserves were not material in fiscal 2021, fiscal 2020 or fiscal 2019.

Revenue Recognition and Accrued Customer Rebates and Returns. Revenue is recognized from product sales when goods are shipped, title and risk of loss and control have been transferred to the customer and collection is reasonably assured. We record estimates for cash discounts, defective and slow-moving product returns, promotional rebates, core return deposits, and other discounts in the period of the sale ("Customer Credits"). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are shown as an increase of accrued customer rebates and returns, which is included in current liabilities. Customer Credits are estimated based on contractual provisions, historical experience, and our assessment of current market conditions. Actual Customer Credits have not differed materially from estimated amounts. Amounts billed to customers for shipping and handling are included in net sales. Costs associated with shipping and handling are included in cost of goods sold.

As noted above, Customer Credits include core return deposits which are an estimate of the amount we believe we will refund to our customers when used cores are returned to us. The price we invoice to customers for remanufactured cores contains both the amount we charge to remanufacture the part and a deposit for the core. We charge a core deposit to encourage the customer to return the used core to us so that it can be used in our remanufacturing process. We allow our customers up to twenty-four months to return the used core to us. Core return deposits are reserved based on the expected deposits to be issued to customers based on historical returns.

Research and Development. Research and development costs are expensed as incurred. Research and development costs totaling $23.1 million, $20.7 million and $21.0 million have been recorded in selling, general and administrative expenses in the Consolidated Statements of Operations for fiscal 2021, fiscal 2020, and fiscal 2019, respectively.

Stock-Based Compensation. At December 25, 2021 and December 26, 2020, we had awards outstanding under two stock-based employee compensation plans, which are described more fully in Note 12, Capital Stock. We record compensation expense for all awards granted. The value of restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) issued was based on the fair value of our common stock on the grant date. For performance-based RSAs tied to growth in adjusted pre-tax income, compensation costs related to the stock is recognized over the performance period and is calculated using the closing price per share of our common stock on the grant date and an estimate of the probable outcome of the performance conditions as of the reporting date. The fair value of performance-based RSUs, for which the performance measure is total shareholder return, is determined using a Monte Carlo simulation model. The fair value of stock options granted is determined using the Black-Scholes option valuation model on the grant date.

Income Taxes. We follow the asset and liability method of accounting for deferred income taxes. Deferred tax assets and liabilities are determined based on the difference between the financial statement

and tax bases of assets and liabilities. Deferred tax assets or liabilities at the end of each period are determined using the enacted tax rate expected to be in effect when taxes are paid or recovered.

Unrecognized income tax benefits represent income tax positions taken on income tax returns that have not been recognized in the consolidated financial statements. The Company recognizes the benefit of an income tax position only if it is more likely than not (greater than 50%) that the tax position will be sustained upon tax examination, based solely on the technical merits of the tax position. Otherwise, no benefit is recognized. The tax benefits recognized are measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. Additionally, we accrue interest and related penalties, if applicable, on all tax exposures for which reserves have been established consistent with jurisdictional tax laws. Interest and penalties are classified as income tax expense in the Consolidated Statements of Operations. The Company does not anticipate material changes in the amount of unrecognized income tax benefits over the next year.

Concentrations of Risk. Financial instruments that potentially subject us to concentrations of credit risk consist primarily of cash equivalents and accounts receivable. All cash equivalents are managed within established guidelines which limit the amount that may be invested with one issuer. A significant percentage of our accounts receivable have been, and will continue to be, concentrated among a relatively small number of automotive retailers and warehouse distributors in the United States. Our four largest customers accounted for 71% and 82% of net accounts receivable as of December 25, 2021 and December 26, 2020, respectively. We continually monitor the credit terms and credit limits to these and other customers.

In fiscal 2021 and fiscal 2020, approximately 74% and 77%, respectively, of our products were purchased from suppliers located in a variety of foreign countries, with the largest portion coming from China.

Fair Value Disclosures. The carrying value of financial instruments such as cash and cash equivalents, accounts receivable, accounts payable, and other current assets and liabilities approximate their fair value based on the short-term nature of these instruments. Additionally, the fair value of assets acquired and liabilities assumed are determined at the date of acquisition. Contingent consideration associated with an acquisition is recorded at fair value at the acquisition date and is adjusted to fair value at each reporting period.