Washington, D.C.  20549

For the quarterly period ended June 30, 2018

OR

For the transition period from                    to

Commission File Number:  1-768

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (224) 551-4000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.  Yes x     No   ¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes x   No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company.  See definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.  (Check one):

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. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes o   No x

At June 30, 2018 , 594,325,388 shares of common stock of the registrant were outstanding.

Table of Contents

* Item omitted because no answer is called for or item is not applicable.

Part I.  FINANCIAL INFORMATION

Item 1.  Financial Statements

Caterpillar Inc.

Consolidated Statement of Results of Operations

(Unaudited)

(Dollars in millions except per share data)

1     Profit attributable to common shareholders.

2    Diluted by assumed exercise of stock-based compensation awards using the treasury stock method.

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc .

Consolidated Statement of Comprehensive Income

(Unaudited)

(Dollars in millions)

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc.

Consolidated Statement of Results of Operations

(Unaudited)

(Dollars in millions except per share data)

1     Profit attributable to common shareholders.

2    Diluted by assumed exercise of stock-based compensation awards using the treasury stock method.

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc .

Consolidated Statement of Comprehensive Income

(Unaudited)

(Dollars in millions)

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc .

Consolidated Statement of Financial Position

(Unaudited)

(Dollars in millions)

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc.

Consolidated Statement of Changes in Shareholders' Equity

(Unaudited)

(Dollars in millions)

See accompanying notes to Consolidated Financial Statements.

Caterpillar Inc.

Consolidated Statement of Cash Flow

(Unaudited)

(Millions of dollars)

All short-term investments, which consist primarily of highly liquid investments with original maturities of three months or less, are considered to be cash equivalents .

See accompanying notes to Consolidated Financial Statements.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Information in our financial statements and related commentary are presented in the following categories:

Machinery, Energy & Transportation (ME&T) – Represents the aggregate total of Construction Industries, Resource Industries, Energy & Transportation and All Other operating segments and related corporate items and eliminations.

Financial Products – Primarily includes the company's Financial Products Segment.  This category includes Caterpillar Financial Services Corporation (Cat Financial), Caterpillar Insurance Holdings Inc. (Insurance Services) and their respective subsidiaries.

B.  Basis of presentation

In the opinion of management, the accompanying unaudited financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of (a) the consolidated results of operations for the three and six months ended June 30, 2018 and 2017 , (b) the consolidated comprehensive income for the three and six months ended June 30, 2018 and 2017 , (c) the consolidated financial position at June 30, 2018 and December 31, 2017 , (d) the consolidated changes in shareholders' equity for the six months ended June 30, 2018 and 2017 and (e) the consolidated cash flow for the six months ended June 30, 2018 and 2017 .  The financial statements have been prepared in conformity with generally accepted accounting principles in the United States of America (U.S. GAAP) and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC).

Interim results are not necessarily indicative of results for a full year. The information included in this Form 10-Q should be read in conjunction with the audited financial statements and notes thereto included in our company's annual report on Form 10-K for the year ended December 31, 2017 ( 2017 Form 10-K).

The December 31, 2017 financial position data included herein is derived from the audited consolidated financial statements included in the 2017 Form 10-K but does not include all disclosures required by U.S. GAAP.  Certain amounts for prior periods have been reclassified to conform to the current period financial statement presentation. See Note 2 for more information. In addition, deferred revenue of $233 million was reclassified from Other current liabilities to Customer advances in the December 31, 2017 Consolidated Statement of Financial Position.

Unconsolidated Variable Interest Entities (VIEs)

We have affiliates, suppliers and dealers that are VIEs of which we are not the primary beneficiary. Although we have provided financial support, we do not have the power to direct the activities that most significantly impact the economic performance of each entity.

Our maximum exposure to loss from VIEs for which we are not the primary beneficiary was as follows:

1 Related contract was terminated during the first quarter of 2018. No payments were made under the guarantee.

In addition, Cat Financial has end-user customers that are VIEs of which we are not the primary beneficiary. Although we have provided financial support to these entities and therefore have a variable interest, we do not have the power to direct the activities that most significantly impact their economic performance. Our maximum exposure to loss from our involvement with these VIEs is limited to the credit risk inherently present in the financial support that we have provided. These risks are evaluated and reflected in our financial statements as part of our overall portfolio of finance receivables and related allowance for credit losses.

2. New accounting guidance

Revenue recognition – In May 2014, the Financial Accounting Standards Board (FASB) issued new revenue recognition guidance to provide a single, comprehensive revenue recognition model for all contracts with customers. Under the new guidance, an entity will recognize revenue to depict the transfer of promised goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. A five step model has been introduced for an entity to apply when recognizing revenue. The new guidance also includes enhanced disclosure requirements. The guidance was effective January 1, 2018, and was applied to contracts that were not completed at the date of initial application on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of January 1, 2018. The prior period comparative information has not been recasted and continues to be reported under the accounting guidance in effect for those periods.

Under the new guidance, sales of certain turbine machinery units changed to a point-in-time recognition model. Under previous guidance, we accounted for these sales under an over-time model following the percentage-of-completion method as the product was manufactured. In addition, under the new guidance we began to recognize an asset for the value of expected replacement part returns and discontinued lease accounting treatment for certain product sales containing residual value guarantees.

See Note 3 for additional information.

The cumulative effect of initially applying the new revenue recognition guidance to our consolidated financial statements on January 1, 2018 was as follows:

The impact from adopting the new revenue recognition guidance on our consolidated financial statements was as follows:

Recognition and measurement of financial assets and financial liabilities – In January 2016, the FASB issued accounting guidance that affects the accounting for equity investments, financial liabilities accounted for under the fair value option and the presentation and disclosure requirements for financial instruments. Under the new guidance, all equity investments in unconsolidated entities (other than those accounted for using the equity method of accounting) will generally be measured at fair value through earnings. There will no longer be an available-for-sale classification for equity securities with readily determinable fair values. For financial liabilities when the fair value option has been elected, changes in fair value due to instrument-specific credit risk will be recognized separately in other comprehensive income. In addition, the FASB clarified guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. The guidance was effective January 1, 2018, and was applied on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of January 1, 2018. The adoption did not have a material impact on our financial statements.

Lease accounting – In February 2016, the FASB issued accounting guidance that revises the accounting for leases. Under the new guidance, lessees are required to recognize a right-of-use asset and a lease liability for substantially all leases. The new guidance will continue to classify leases as either financing or operating, with classification affecting the pattern of expense recognition. The accounting applied by a lessor under the new guidance will be substantially equivalent to current lease accounting guidance. Entities have the option to adopt the new guidance using a modified retrospective approach through a cumulative effect adjustment to retained earnings applied either to the beginning of the earliest period presented or the beginning of the period of adoption. In addition, the new guidance provides for certain practical expedients. The new guidance is effective January 1, 2019, with early adoption permitted. A team is currently designing new processes and controls, implementing a software solution and evaluating our population of leased assets to assess the effect of the new guidance on our financial statements. We plan to adopt the new guidance effective January 1, 2019 using a modified retrospective approach through a cumulative effect adjustment to retained earnings as of the beginning of the period of adoption.

Stock-based compensation - In March 2016, the FASB issued accounting guidance to simplify several aspects of the accounting for share-based payments. The new guidance changes how reporting entities account for certain aspects of share-based payments, including the accounting for income taxes and the classification of the tax impact on the Consolidated Statement of Cash Flow. Under the new guidance all excess tax benefits and deficiencies during the period are recognized in income (rather than equity) on a prospective basis. The guidance removes the requirement to delay recognition of excess tax benefits until it reduces income taxes currently payable. This change was required to be applied on a modified retrospective basis, resulting in a cumulative-effect adjustment to opening retained earnings in the period of adoption. In addition, Cash flows related to excess tax benefits are now included in Cash provided by operating activities and will no longer be separately classified as a financing activity. This change was adopted retrospectively. The guidance was effective January 1, 2017, and did not have a material impact on our financial statements.

Measurement of credit losses on financial instruments – In June 2016, the FASB issued accounting guidance to introduce a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. The new guidance will apply to loans, accounts receivable, trade receivables, other financial assets measured at amortized cost, loan commitments and other off-balance sheet credit exposures. The new guidance will also apply to debt securities and other financial assets measured at fair value through other comprehensive income. The new guidance is effective January 1, 2020, with early adoption permitted beginning January 1, 2019. We are in the process of evaluating the effect of the new guidance on our financial statements.

Classification for certain cash receipts and cash payments – In August 2016, the FASB issued accounting guidance related to the presentation and classification of certain transactions in the statement of cash flows where diversity in practice exists. The guidance was effective January 1, 2018, and was applied on a retrospective basis. The adoption did not have a material impact on our financial statements.

Tax accounting for intra-entity asset transfers – In October 2016, the FASB issued accounting guidance that requires the recognition of tax expense from the sales of intra-entity assets in the seller's tax jurisdiction at the time of transfer. The new guidance does not apply to intra-entity transfers of inventory. Under previous guidance, the tax effects of these assets were deferred until the transferred asset was sold to a third party or otherwise recovered through use. The guidance was effective January 1, 2018, and was applied on a modified retrospective basis through a cumulative effect adjustment to retained earnings as of January 1, 2018. The adoption did not have a material impact on our financial statements.

Classification of restricted cash – In November 2016, the FASB issued accounting guidance related to the presentation and classification of changes in restricted cash on the statement of cash flows where diversity in practice exists. The

guidance was effective January 1, 2018, and was applied on a retrospective basis. The adoption did not have a material impact on our financial statements.

Presentation of net periodic pension costs and net periodic postretirement benefit costs – In March 2017, the FASB issued accounting guidance that requires that an employer disaggregate the service cost component from the other components of net benefit cost. Service cost is required to be reported in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net periodic benefit cost are required to be reported outside the subtotal for income from operations. Additionally, only the service cost component of net benefit costs is eligible for capitalization. The guidance was effective January 1, 2018. We applied the presentation changes retrospectively and the capitalization change prospectively. The adoption primarily resulted in the reclassification of other components of net periodic benefit cost outside of Operating profit in the Consolidated Statement of Results of Operations.

Premium amortization on purchased callable debt securities – In March 2017, the FASB issued accounting guidance related to the amortization period for certain purchased callable debt securities held at a premium. Securities held at a premium will be required to be amortized to the earliest call date rather than the maturity date. The new standard is required to be applied with a modified retrospective approach through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The guidance is effective January 1, 2019, with early adoption permitted. We do not expect the adoption to have a material impact on our financial statements.

Clarification on stock-based compensation – In May 2017, the FASB issued accounting guidance to clarify which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting. The guidance was effective January 1, 2018, and was applied prospectively. The adoption did not have a material impact on our financial statements.

Derivatives and hedging – In August 2017, the FASB issued accounting guidance to better align hedge accounting with a company's risk management activities, simplify the application of hedge accounting and improve the disclosures of hedging arrangements. The new guidance is required to be applied on a modified retrospective basis, resulting in a cumulative-effect adjustment to opening retained earnings in the period of adoption. The guidance is effective January

1, 2019, with early adoption permitted. The impact on our financial statements at the time of adoption will primarily be reclassification of our gains (losses) for designated ME&T foreign exchange contracts from Other income (expense) to components of Operating profit in the Consolidated Statement of Results of Operations. We plan to adopt the new guidance effective January 1, 2019.

Reclassification of certain tax effects from accumulated other comprehensive income – In February 2018, the FASB issued accounting guidance to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from U.S. tax reform legislation. The new guidance is required to be applied either in the period of adoption or retrospectively to each period affected by U.S. tax reform legislation. The guidance is effective January 1, 2019, with early adoption permitted. We are in the process of evaluating the effect of the new guidance on our financial statements.

A. Sales of Machinery, Energy & Transportation

Sales of Machinery, Energy & Transportation are recognized when all the following criteria are satisfied: (i) a contract with an independently owned and operated dealer or an end user exists which has commercial substance; (ii) it is probable we will collect the amount charged to the dealer or end user; and (iii) we have completed our performance obligation whereby the dealer or end user has obtained control of the product. A contract with commercial substance exists once we receive and accept a purchase order under a dealer sales agreement, or once we enter into a contract with an end user. If collectibility is not probable, the sale is deferred and not recognized until collection is probable or payment is received. Control of our products typically transfers when title and risk of ownership of the product has transferred to the dealer or end user. Typically, where product is produced and sold in the same country, title and risk of ownership transfer when the product is shipped. Products that are exported from a country for sale typically transfer title and risk of ownership at the border of the destination country.

Our remanufacturing operations are primarily focused on the remanufacture of Cat engines and components and rail related products.  In this business, used engines and related components (core) are inspected, cleaned and remanufactured.  In connection with the sale of our remanufactured product to dealers, we collect a deposit that is repaid if the dealer returns an acceptable core within a specified time period.  Caterpillar owns and has title to the cores when they are returned from dealers.  The rebuilt engine or component (the core plus any new content) is then sold as a remanufactured product to dealers and end users.  Revenue is recognized pursuant to the same criteria as Machinery, Energy & Transportation sales noted above (title and risk of ownership of the entire remanufactured product passes to the dealer or end user upon sale).  At the time of sale, the deposit is recognized in Other current liabilities in the Consolidated Statement of Financial Position, and the core to be returned is recognized as an asset in Prepaid expenses and other current assets in the Consolidated Statement of Financial Position at the estimated replacement cost (based on historical experience with usable cores).  Upon receipt of an acceptable core, we repay the deposit and relieve the liability.  The returned core is then included in inventory. In the event that the deposit is forfeited (i.e., upon failure by the dealer to return an acceptable core in the specified time period), we recognize the core deposit and the cost of the core in Sales and Cost of goods sold, respectively. 

We provide discounts to dealers through merchandising programs. We have numerous programs that are designed to promote the sale of our products.  The most common dealer programs provide a discount when the dealer sells a product to a targeted end user.  Generally, the cost of these discounts is estimated for each product by model by geographic region based on historical experience and known changes in merchandising programs. The cost of these discounts is reported as a reduction to the transaction price when the product sale is recognized. A corresponding post-sale discount reserve is accrued in the Consolidated Statement of Financial Position, which represents discounts we expect to pay on previously sold units. If discounts paid differ from those estimated, the difference is reported as a change in the transaction price.

Except for replacement parts, no right of return exists on the sale of our products.  We estimate replacement part returns based on historical experience and recognize a parts return asset in Prepaid expenses and other current assets in the Consolidated Statement of Financial Position, which represents our right to recover replacement parts we expect will be returned. We also recognize a refund liability in Other current liabilities in the Consolidated Statement of Financial Position for the refund we expect to pay for returned parts. If actual replacement part returns differ from those estimated, the difference in the estimated replacement part return asset and refund liability is recognized in Cost of goods sold and Sales, respectively.

Our standard dealer invoice terms are established by marketing region. Our invoice terms for end user sales are established by the responsible business unit. Payments from dealers are due shortly after the time of sale. When a sale is made to a dealer, the dealer is responsible for payment even if the product is not sold to an end user. Dealers and end users must make payment within the established invoice terms to avoid potential interest costs. Interest at or above prevailing market rates may be charged on any past due balance, and generally our practice is to not forgive this interest. In addition, Cat Financial provides wholesale inventory financing for a dealer's purchase of inventory. Wholesale inventory receivables have varying payment terms and are included in Receivables – trade and other and Long-term receivables – trade and other in the Consolidated Statement of Financial Position. Trade receivables from dealers and end users were $6,944 million and $6,399 million as of June 30, 2018 and January 1, 2018 , respectively, and are recognized in Receivables – trade and other in the Consolidated Statement of Financial Position. Long-term trade receivables from dealers and end users were $634 million and $639 million as of June 30, 2018 and January 1, 2018 , respectively, and are recognized in Long-term receivables – trade and other in the Consolidated Statement of Financial Position.

We establish a bad debt allowance for Machinery, Energy & Transportation receivables when it becomes probable that the receivable will not be collected. Our allowance for bad debts is not significant.

We invoice in advance of recognizing the sale of certain products. Advanced customer payments are recognized as a contract liability in Customer advances and Other liabilities in the Consolidated Statement of Financial Position. Long-term customer advances recognized in Other liabilities in the Consolidated Statement of Financial Position were $434 million and $396 million as of June 30, 2018 and January 1, 2018 , respectively. We reduce the contract liability when revenue is recognized. During the three and six months ended June 30, 2018 , we recognized $362 million and $979 million , respectively, of revenue that was recorded as a contract liability at the beginning of the period.

We have elected the practical expedient to not adjust the amount of revenue to be recognized under a contract with a dealer or end user for the effects of time value of money when the timing difference between receipt of payment and recognition of revenue is less than one year.

As of June 30, 2018 , we have entered into contracts with dealers and end users for which sales have not been recognized as we have not satisfied our performance obligations and transferred control of the products. The dollar amount of unsatisfied performance obligations for contracts with an original duration greater than one year is $5.6 billion , of which $2.6 billion is expected to be completed and revenue recognized in the twelve months following June 30, 2018 . We have elected the practical expedient to not disclose unsatisfied performance obligations with an original contract duration of one year or less. Contracts with an original duration of one year or less are primarily sales to dealers for machinery, engines and replacement parts.

Sales and other related taxes are excluded from the transaction price. Shipping and handling costs associated with outbound freight after control over a product has transferred are accounted for as a fulfillment cost and are included in Cost of goods sold.

We provide a standard manufacturer's warranty of our products at no additional cost. At the time a sale is recognized, we record estimated future warranty costs. See Note 10 for further discussion of our product warranty liabilities.

See Note 15 for further disaggregated sales and revenues information.

B. Revenues of Financial Products

Revenues of Financial Products are generated primarily from finance revenue on finance receivables and rental payments on operating leases. Finance revenue is recorded over the life of the related finance receivable using the interest method, including the accretion of certain direct origination costs that are deferred. Revenue from rental payments received on operating leases is recognized on a straight-line basis over the term of the lease.

Recognition of finance revenue and rental revenue is suspended and the account is placed on non-accrual status when management determines that collection of future income is not probable (generally after 120 days past due). Recognition is resumed, and previously suspended income is recognized, when the account becomes current and collection of remaining amounts is considered probable. See Note 16 for more information.

Revenues are presented net of sales and other related taxes.

4. Stock-based compensation

Accounting for stock-based compensation requires that the cost resulting from all stock-based payments be recognized in the financial statements based on the grant date fair value of the award.  Our stock-based compensation primarily consists of stock options, restricted stock units (RSUs) and performance-based restricted stock units (PRSUs).

Beginning with the 2018 grant, RSU and PRSU awards are credited with dividend equivalent units on each date that a cash dividend is paid to holders of Common Stock. The fair value of the RSU and PRSU awards granted in 2018 was determined as the closing stock price on the date of grant. Prior to 2018, RSU and PRSU awards were not credited with dividend equivalent units and the fair value was determined by reducing the stock price on the date of grant by the present value of the estimated dividends to be paid during the vesting period. The estimated dividends were based on Caterpillar's quarterly dividend per share at the time of grant.

We recognized pretax stock-based compensation expense of $62 million and $112 million for the three and six months ended June 30, 2018 , respectively, and $68 million and $117 million for the three and six months ended June 30, 2017, respectively.

The following table illustrates the type and fair value of the stock-based compensation awards granted during the six months ended June 30, 2018 and 2017 , respectively: