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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of RegulationS-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” inRule 12b-2 of the Exchange Act.

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. ☐

Indicate by check mark whether the registrant is a shell company (as defined inRule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of ~~July 14,~~October 17, 2017, there were ~~148,810,561~~141,760,746 shares of Common Stock outstanding.


	June 30, 2017			December 31, 2016			September 30, 2017			December 31, 2016
ASSETS
Current Assets
Cash and cash equivalents	$	85		$	205		$	210		$	205
Accounts receivable		274			197			271			197
Inventories		147			126			156			126
Other current assets		21			20			28			20

Total Current Assets		527			548			665			548

Property, plant and equipment, net		453			464			456			464
Intangible assets, net		1,197			1,242			1,175			1,242
Goodwill		1,941			1,941			1,941			1,941
Other non-current assets		24			24			24			24

TOTAL ASSETS	$	4,142		$	4,219		$	4,261		$	4,219


LIABILITIES
Current Liabilities
Accounts payable	$	172		$	128		$	184		$	128
Product warranty liability		21			25			22			25
Current portion of long-term debt		12			12			12			12
Deferred revenue		28			27			33			27
Other current liabilities		164			150			193			150

Total Current Liabilities		397			342			444			342

Product warranty liability		34			38			27			38
Deferred revenue		68			66			75			66
Long-term debt		2,348			2,147			2,536			2,147
Deferred income taxes		364			312			393			312
Other non-current liabilities		235			233			231			233

TOTAL LIABILITIES		3,446			3,138			3,706			3,138
Commitments and contingencies (see NOTE N)

STOCKHOLDERS’ EQUITY
Common stock, $0.01 par value, 1,880,000,000 shares authorized, 149,319,380 shares issued and outstanding and 163,795,604 shares issued and outstanding, respectively		1			2
Common stock, $0.01 par value, 1,880,000,000 shares authorized, 142,735,480 shares issued and outstanding and 163,795,604 shares issued and outstanding, respectively								1			2
Non-voting common stock, $0.01 par value, 20,000,000 shares authorized, none issued and outstanding		—			—			—			—
Preferred stock, $0.01 par value, 100,000,000 shares authorized, none issued and outstanding		—			—			—			—
Paid in capital		1,745			1,728			1,750			1,728
Accumulated deficit		(993	)		(586	)		(1,144	)		(586	)
Accumulated other comprehensive loss, net of tax		(57	)		(63	)		(52	)		(63	)

TOTAL STOCKHOLDERS’ EQUITY		696			1,081			555			1,081

TOTAL LIABILITIES & STOCKHOLDERS’ EQUITY	$	4,142		$	4,219		$	4,261		$	4,219

The accompanying notes are an integral part of the condensed consolidated financial statements.


	Three months ended June 30,						Six months ended June 30,						Three months ended September 30,						Nine months ended September 30,
	2017			2016			2017			2016			2017			2016			2017			2016
Net sales	$	580		$	475		$	1,079		$	937		$	595		$	434		$	1,674		$	1,371
Cost of sales		290			248			538			495			293			230			831			725

Gross profit		290			227			541			442			302			204			843			646
Selling, general and administrative		88			78			167			161			78			79			245			240
Engineering — research and development		25			22			48			43			26			21			74			64

Operating income		177			127			326			238			198			104			524			342
Interest expense, net		(27	)		(28	)		(52	)		(62	)		(26	)		(22	)		(78	)		(84	)
Other expense, net		(4	)		—			(1	)		—
Expenses related to long-term debt refinancing														—			(12	)		—			(12	)
Other (expense) income, net														(2	)		1			(3	)		1

Income before income taxes		146			99			273			176			170			71			443			247
Income tax expense		(51	)		(38	)		(95	)		(67	)		(59	)		(26	)		(154	)		(93	)

Net income	$	95		$	61		$	178		$	109		$	111		$	45		$	289		$	154

Basic earnings per share attributable to common stockholders	$	0.63		$	0.36		$	1.16		$	0.64		$	0.75		$	0.27		$	1.91		$	0.91

Diluted earnings per share attributable to common stockholders	$	0.63		$	0.36		$	1.15		$	0.64		$	0.75		$	0.27		$	1.90		$	0.91

Dividends declared per common share	$	0.15		$	0.15		$	0.30		$	0.30		$	0.15		$	0.15		$	0.45		$	0.45

Comprehensive income, net of tax	$	98		$	60		$	184		$	111		$	116		$	45		$	300		$	156

The accompanying notes are an integral part of the condensed consolidated financial statements.


	Six months ended June 30,						Nine months ended September 30,
	2017			2016			2017			2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	178		$	109		$	289		$	154
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes								72			80
Amortization of intangible assets		45			46			67			69
Deferred income taxes		44			54
Depreciation of property, plant and equipment		39			42			60			63
Unrealized (gain) loss on derivatives		(6	)		13			(10	)		10
Stock-based compensation		6			4			8			6
Amortization of deferred financing costs		3			4			4			6
Expenses related to long-term debt refinancing								—			11
Excess tax benefit from stock-based compensation								—			(2	)
Other		3			2			5			2

Changes in assets and liabilities:
Accounts receivable		(74	)		(4	)		(71	)		(5	)
Inventories		(19	)		(7	)		(28	)		(12	)
Accounts payable		43			12			56			8
Other assets and liabilities		15			13			40			26

Net cash provided by operating activities		277			288			492			416
CASH FLOWS FROM INVESTING ACTIVITIES:

Additions of long-lived assets		(20	)		(22	)		(40	)		(36	)
Investments in technology-related initiatives		(3	)		—			(3	)		(1	)

Net cash used for investing activities		(23	)		(22	)		(43	)		(37	)
CASH FLOWS FROM FINANCING ACTIVITIES:

Repurchases of common stock		(539	)		(92	)		(778	)		(169	)
Borrowings on revolving credit facility		330			—			415			—
Repayments on revolving credit facility		(125	)		—			(415	)		—
Issuance of long-term debt								400			1,000
Dividend payments		(46	)		(51	)		(68	)		(76	)
Proceeds from exercise of stock options		11			2			14			9
Payments on long-term debt		(6	)		(12	)		(9	)		(1,212	)
Debt financing fees								(5	)		(19	)
Taxes paid related to net share settlement of equity awards		(1	)		—			(1	)		(1	)
Excess tax benefit from stock-based compensation								—			2

Net cash used for financing activities		(376	)		(153	)		(447	)		(466	)
Effect of exchange rate changes on cash		2			—			3			—

Net (decrease) increase in cash and cash equivalents		(120	)		113
Net increase (decrease) in cash and cash equivalents								5			(87	)
Cash and cash equivalents at beginning of period		205			252			205			252

Cash and cash equivalents at end of period	$	85		$	365		$	210		$	165

Supplemental disclosures:
Interest paid	$	55		$	43		$	71		$	64
Income taxes paid	$	34		$	8		$	65		$	10

The accompanying notes are an integral part of the condensed consolidated financial statements.

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison” or the “Company”) design and manufacture commercial and defense fully-automatic transmissions. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”.

The Company has approximately 2,600 employees and 13 different transmission product lines. Although approximately 78% of revenues were generated in North America in 2016, the Company has a global presence by serving customers in Europe, Asia, South America and Africa. The Company serves customers through an independent network of approximately 1,400 independent distributor and dealer locations worldwide.

The condensed consolidated financial statements have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form10-Q and Article 10 of RegulationS-X. Accordingly, the condensed consolidated financial statements do not include all information and footnotes required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. The information herein reflects all normal recurring material adjustments, which are, in the opinion of management, necessary for the fair statement of the results for the periods presented. The condensed consolidated financial statements herein consist of all wholly-owned domestic and foreign subsidiaries with all significant intercompany transactions eliminated.

These condensed consolidated financial statements present the financial position, results of comprehensive income and cash flows of the Company. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Form10-K for the year ended December 31, 2016 as filed with the Securities and Exchange Commission (“SEC”) on February 24, 2017. The presentation of certain prior year disclosures has been modified to conform to the current year presentation, as commencing in the first quarter of 2017, the Company elected to report financial data in whole millions of dollars, except as otherwise noted. The interim period financial results for the three and ~~six~~nine month periods presented are not necessarily indicative of results to be expected for any other interim period or for the entire year.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses. Estimates include, but are not limited to, sales allowances, government price adjustments, fair market values and future cash flows associated with goodwill, ~~indefinite-life~~indefinite life intangibles, long-lived asset impairment tests, useful lives for depreciation and amortization, warranty liabilities, environmental liabilities, determination of discount and other assumptions for pension and other postretirement benefit expense, income taxes and deferred tax valuation allowances, derivative valuation, and contingencies. The Company’s accounting policies involve the application of judgments and assumptions made by management that include inherent risks and uncertainties. Actual results could differ materially from these estimates. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur.

During the fourth quarter of every year, the Company performs additional reviews of its goodwill, other intangible assets and long-lived assets to determine whether the carrying value of an asset may not be recoverable. The Company has recorded impairments to both its Trade name and long-lived assets in prior periods with the most recent impairments recorded in 2015.

The Company performs its annual goodwill and intangible assets impairment analysis on October 31 of every year. Events or circumstances that could unfavorably impact the key assumptions in the impairment test include lower net sales, the Company’s inability to execute on marketing programs and/or delay in the introduction of new products, lower gross margins or failure to obtain forecasted cost reductions, or a higher discount rate as a result of market conditions.

The carrying value of long-lived assets is evaluated when events or circumstances indicate that there has been a significant change in the use of an asset, or the planned sale or disposal of an asset. The asset would be considered impaired when there is no future use planned for the asset or the future net undiscounted cash flows generated by the asset or asset group are less than its carrying value. An impairment loss would be recognized based on the amount by which the carrying value exceeds fair value. Assumptions and estimates used to determine cash flows in the evaluation of impairment and the fair values used to determine the impairment are subject to a degree of judgment and complexity. Any changes to the assumptions and estimates resulting from changes in actual results or market conditions from those anticipated may affect the carrying value of long-lived assets and could result in an impairment charge.

In January 2017, the Financial Accounting Standards Board (“FASB”) issued authoritative accounting guidance on evaluation of goodwill for impairment. The guidance modifies the approach to assessing impairment from testing the implied fair value goodwill to testing the fair value of the reporting unit carrying the goodwill, which eliminates Step 2 of the current evaluation guidance. The intent of this amendment is to reduce the cost and complexity of evaluating goodwill. The guidance was early adopted by the Company effective July 1, 2017. The adoption of this guidance did not have an impact on the Company’s consolidated financial statements.

In March 2016, the FASB issued authoritative accounting guidance on share-based payment awards to employees. The guidance involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The guidance was adopted by the Company effective January 1, 2017. Management recorded an excess tax benefit of $4$5 million and ~~$11~~$16 million to income tax expense and as a component of operating cash flows for the three months and ~~six~~nine months ended ~~June~~September 30, 2017, respectively, and made the accounting policy election to account for forfeitures as they occur.

In July 2015, the FASB issued authoritative accounting guidance to simplify the measurement of inventory. The guidance requires that inventory be measured at the lower of cost and net realizable value. When evidence exists that the net realizable value of inventory is lower than its cost, the difference shall be recognized as a loss in earnings in the period in which it occurs. Inventory measured using last-in,first-out and the retail inventory method are not impacted by the new guidance. The guidance was adopted by the Company effective January 1, 2017. The adoption of this guidance did not have a material impact on the Company’s consolidated financial statements.

In May 2017, the FASB issued authoritative accounting guidance on accounting for modifications to the terms of employee stock compensation. The guidance clarifies which changes to terms or conditions of share-based payment awards require the entity to apply modification accounting. The guidance will be effective for the Company in fiscal year 2018, but early adoption is permitted. Management is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

In March 2017, the FASB issued authoritative accounting guidance on the presentation of net periodic pension costs and net periodic postretirement benefit costs. The guidance clarifies the presentation of component costs within an employer’s financial statements and restricts component costs eligible for capitalization to the service cost component. The Company did not early adopt, therefore the guidance will be effective for the Company in fiscal year ~~2018, but early adoption is permitted.~~2018. Management is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

In October 2016, the FASB issued authoritative accounting guidance on the income tax consequences of intra-company transfers other than inventory. This guidance addresses the timing of the recognition of current and deferred income taxes. Under this guidance, the recognition of current or deferred income taxes will occur at the time of the transfer of the asset. The Company did not early ~~adopt,~~adopt; therefore, the guidance will be effective for the Company in fiscal year 2018. Management is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

In August 2016, the FASB issued authoritative accounting guidance on the presentation and classification of certain cash receipts and cash payments on the statement of cash flows. The guidance specifically addresses cash flow issues with the objective of reducing the diversity in practice. The Company did not early ~~adopt,~~adopt; therefore, the guidance will be effective for the Company in fiscal year 2018. Management is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

In February 2016, the FASB issued authoritative accounting guidance on lease accounting. The guidance requires lessees to presentright-of-use assets and lease liabilities on the balance sheet for all leases not considered short-term leases. Short-term leases are leases with a lease term of 12 months or less as long as the leases do not include options to purchase the underlying assets that the lessee is reasonably certain to exercise. The new guidance also introduces new disclosure requirements for leasing arrangements. The guidance will be effective for the Company in fiscal year 2019, and the Company does not plan to early adopt. Management is currently evaluating the impact of this guidance on the Company’s consolidated financial statements.

In January 2016, the FASB issued authoritative accounting guidance on the classification of equity securities with readily determinable fair values into different categories (e.g. trading oravailable-for-sale) and the requirement for equity securities to be measured at fair value with changes in fair value recognized in net income. The Company did not early ~~adopt,~~adopt; therefore, the guidance will be effective prospectively for the Company in fiscal year 2018. Upon adoption, a cumulative-effect adjustment to retained earnings in the consolidated balance sheets will be reclassified to beginning retained earnings. Management has evaluated the impact of this guidance and expects the unrealized gains and losses for fair value measurement of the Company’savailable-for-sale securities to be recognized in net income upon adoption.

In May 2014, the FASB issued authoritative accounting guidance on a company’s accounting for revenue from contracts with customers, which guidance has subsequently been amended. The guidance applies to all companies that enter into contracts with customers to transfer goods, services or nonfinancial assets. The guidance requires these companies to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance also requires disclosures regarding the nature, timing, amount and uncertainty of revenue that is recognized. The guidance allows either full or modified retrospective adoption. The Company did not early ~~adopt,~~adopt; therefore, the guidance will be effective for the Company for the annual and interim periods beginning in fiscal year 2018. The Company will implement the guidance using the modified retrospective approach. Management has determined that the revenue streams that ~~could~~will be impacted by the guidance relate tonon-standard transmission coverages. Certain contracts are also being reviewed individually for the potential impact. No significant changes or additions to our internal controls over financial reporting are expected as a result of implementing this guidance.


	June 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Purchased parts and raw materials	$	66	$	57	$	72	$	57
Work in progress		7		5		8		5
Service parts		46		43		46		43
Finished goods		28		21		30		21

Total inventories	$	147	$	126	$	156	$	126

Inventory components shipped to third parties, primarily cores, parts tore-manufacturers, and parts to contract manufacturers, which the Company has an obligation to buy back, are included in purchased parts and raw materials, with an offsetting liability in Other current liabilities. See NOTE J, “Other Current Liabilities” for more information.

As of ~~June~~September 30, 2017 and December 31, 2016, the carrying amount of the Company’s Goodwill was $1,941 million. The following presents a summary of other intangible assets (dollars in millions):


	June 30, 2017							December 31, 2016							September 30, 2017							December 31, 2016
	Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net
Other intangible assets:
Trade name	$	790	$	—		$	790	$	790	$	—		$	790	$	790	$	—		$	790	$	790	$	—		$	790
Customer relationships - defense		62		(36	)		26		62		(35	)		27
Customer relationships - commercial		832		(550	)		282		832		(526	)		306
Customer relationships — defense																62		(37	)		25		62		(35	)		27
Customer relationships — commercial																832		(562	)		270		832		(526	)		306
Proprietary technology		476		(377	)		99		476		(358	)		118		476		(386	)		90		476		(358	)		118
Non-compete agreement		17		(17	)		—		17		(16	)		1		17		(17	)		—		17		(16	)		1
Patented technology - defense		28		(28	)		—		28		(28	)		—
Patented technology — defense																28		(28	)		—		28		(28	)		—
Tooling rights		5		(5	)		—		5		(5	)		—		5		(5	)		—		5		(5	)		—

Total	$	2,210	$	(1,013	)	$	1,197	$	2,210	$	(968	)	$	1,242	$	2,210	$	(1,035	)	$	1,175	$	2,210	$	(968	)	$	1,242

As of ~~June~~September 30, 2017 and December 31, 2016, the net carrying value of our Goodwill and other intangible assets was ~~$3,138~~$3,116 million and $3,183 million, respectively.

Amortization expense related to other intangible assets for the next five fiscal years ~~and thereafter~~ is expected to be (dollars in millions):

In accordance with the FASB’s authoritative accounting guidance on fair value measurements, fair value is the price (exit price) that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company utilizes market data or assumptions that market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated, or generally unobservable. The Company primarily applies the market approach for recurring fair value measurements and utilizes the best available information that maximizes the use of observable inputs and minimizes the use of unobservable inputs. The Company is able to classify fair value balances based on the observability of those inputs. The accounting guidance establishes a fair value hierarchy that prioritizes the inputs used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurement) and the lowest priority to unobservable inputs (Level 3 measurement). The three levels of the fair value hierarchy defined by the relevant guidance are as follows:

Level 1 — Quoted prices are available in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis. Level 1 primarily consists of financial instruments such as exchange-traded derivatives, listed equities and publicly traded bonds.

Level 2 — Pricing inputs are other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reported date. Level 2 includes financial instruments that are valued using quoted prices in markets that are not active and those financial instruments that are valued using models or other valuation methodologies. These models are primarily industry standard models that consider various assumptions, including quoted forward prices for commodities, time value, volatility factors, and current market and contractual prices for the underlying instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace throughout the full term of the instrument, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 — Pricing inputs include significant inputs that are generally less observable from objective sources. These inputs may be used with internally developed methodologies that result in management’s best estimate of fair value. At each balance sheet date, the Company performs an analysis of all instruments subject to authoritative accounting guidance and includes, in Level 3, all of those whose fair value is based on significant unobservable inputs. As of ~~June~~September 30, 2017 and December 31, 2016, the Company did not have any Level 3 financial assets or liabilities.

The Company’s assets and liabilities that are measured at fair value include cash equivalents,available-for-sale securities, derivative instruments, assets held in a rabbi trust and a deferred compensation obligation. The Company’s cash equivalents consist of short-term U.S. government backed securities. The Company’savailable-for-sale securities consist of ordinary shares of Torotrak plc (“Torotrak”) associated with a license and exclusivity agreement with Torotrak. Torotrak’s listed shares are traded on the London Stock Exchange under the ticker symbol “TRK.” The Company’s derivative instruments consist of interest rate swaps. The Company’s assets held in the rabbi trust consist principally of publicly available mutual funds and target date retirement funds. The Company’s deferred compensation obligation is directly related to the fair value of assets held in the rabbi trust.

The Company’s valuation techniques used to calculate the fair value of cash and cash equivalents,available-for-sale securities, assets held in the rabbi trust and the deferred compensation obligation represent a market approach in active markets for identical assets that qualify as Level 1 in the fair value hierarchy. The Company’s valuation techniques used to calculate the fair value of derivative instruments represent a market approach with observable inputs that qualify as Level 2 in the fair value hierarchy.

The Company uses valuations from the issuing financial institution for the fair value measurement of interest rate derivatives. The Company corroborates the valuation through the use of third-party valuation services using a standard replacement valuation model. Thefloating-to-fixed interest rate swaps are based on the London Interbank Offered Rate (“LIBOR”) which is observable at commonly quoted intervals. The fair values are included in other current andnon-current assets and liabilities in the Condensed Consolidated Balance Sheets. The Company has not qualified for hedge accounting treatment for the interest rate swaps and, as a result, fair value adjustments are charged directly to Interest expense, net in the Condensed Consolidated Statements of Comprehensive Income.

The following table summarizes the fair value of the Company’s financial assets and (liabilities) as of ~~June~~September 30, 2017 and December 31, 2016 (dollars in millions):


	Fair Value Measurements Using																		Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL
	June 30, 2017			December 31, 2016			June 30, 2017			December 31, 2016			June 30, 2017			December 31, 2016			September 30, 2017			December 31, 2016			September 30, 2017			December 31, 2016			September 30, 2017			December 31, 2016
Cash equivalents	$	—		$	81		$	—		$	—		$	—		$	81
Rabbi trust assets		8			5			—			—			8			5		$	8		$	5		$	—		$	—		$	8		$	5
Deferred compensation obligation		(8	)		(5	)		—			—			(8	)		(5	)		(8	)		(5	)		—			—			(8	)		(5	)
Cash equivalents																				—			81			—			—			—			81
Available-for-sale securities		1			2			—			—			1			2			—			2			—			—			—			2
Derivative liabilities, net	��	—			—			(23	)		(29	)		(23	)		(29	)		—			—			(19	)		(29	)		(19	)		(29	)

Total	$	1		$	83		$	(23	)	$	(29	)	$	(22	)	$	54		$	—		$	83		$	(19	)	$	(29	)	$	(19	)	$	54


	June 30, 2017		December 31, 2016		September 30, 2017		December 31, 2016
Long-term debt:
Senior Secured Credit Facility Term B-3 Loan, variable, due 2022	$	1,182	$	1,188	$	1,179	$	1,188
Senior Secured Credit Facility Revolving Credit Facility, variable, due 2021		205		—
Senior Notes, fixed 5.0%, due 2024		1,000		1,000		1,000		1,000
Senior Notes, fixed 4.75%, due 2027						400		—

Total long-term debt	$	2,387	$	2,188	$	2,579	$	2,188
Less: current maturities of long-term debt		12		12		12		12
deferred financing costs, net		27		29		31		29

Total long-term debt, net	$	2,348	$	2,147	$	2,536	$	2,147

As of ~~June~~September 30, 2017, the Company had ~~$2,387~~$2,579 million of indebtedness associated with Allison Transmission, Inc.’s (“ATI”), the Company’s wholly-owned subsidiary, 5.0% Senior Notes due September 2024 (“5.0% Senior Notes”), ATI’s 4.75% Senior Notes due October 2027 (“4.75% Senior Notes”) and ATI’s Senior Secured Credit Facility (“Senior Secured Credit Facility”), which consists of the Senior Secured Credit Facility TermB-3 Loan due 2022 (“TermB-3 Loan”) and the Senior Secured Credit Facility revolving credit facility due 2021 (“Revolving Credit Facility”).

The fair value of the Company’s long-term debt obligations as of ~~June~~September 30, 2017 was ~~$2,411~~$2,623 million. The fair value is based on quoted Level 2 market prices of the Company’s debt as of ~~June~~September 30, 2017. It is not expected that the Company would be able to repurchase a significant amount of its debt at these levels. The difference between the fair value and carrying value of the long-term debt is driven primarily by trends in the financial markets.

In March 2017, ATI entered into an amendment with the term loan lenders under its Senior Secured Credit Facility to lower the applicable margins on the TermB-3 Loan by 0.5%. The amendment also eliminated the minimum LIBOR floor and reduced the minimum floor applicable to the base rate from 1.75% to 1.00% on the TermB-3 Loan. The March 2017 amendment was treated as a modification to the Senior Secured Credit Facility under GAAP, and thus the Company recorded $1 million as new deferred financing fees.

In September 2017, ATI entered into a joinder agreement with the lenders under its Senior Secured Credit Facility to increase the available commitments under the Revolving Credit Facility from $450 million to $550 million. The joinder agreement was treated as a modification to the Revolving Credit Facility under GAAP.

The Senior Secured Credit Facility is collateralized by a lien on substantially all assets of the Company including all of ATI’s capital stock and all of the capital stock or other equity interest held by the Company, ATI and each of the Company’s existing and future U.S. subsidiary guarantors (subject to certain limitations for equity interests of foreign subsidiaries and other exceptions set forth in the terms of the Senior Secured Credit Facility). Interest on the TermB-3 Loan, as of ~~June~~September 30, 2017, is either (a) 2.00% over the LIBOR or (b) 1.00% over the greater of the prime lending rate as quoted by the administrative agent and the federal funds effective rate published by the Federal Reserve Bank of New York plus 0.5%, provided that neither is below 1.00%. As of ~~June~~September 30, 2017, the Company elected to pay the lowestall-in rate of LIBOR plus the applicable margin, or ~~3.22%~~3.24%, on the TermB-3 Loan. The Senior Secured Credit Facility requires minimum quarterly principal payments on the TermB-3 Loan as well as prepayments from certain net cash proceeds ofnon-ordinary course asset sales and casualty and condemnation events and from a percentage of excess cash flow, if applicable. The minimum required quarterly principal payment on the TermB-3 Loan through its maturity date of September 2022 is $3 million. As of ~~June~~September 30, 2017, there had been no payments required for certain net cash proceeds ofnon-ordinary course asset sales and casualty and condemnation events. The remaining principal balance is due upon maturity.

The Senior Secured Credit Facility also provides a Revolving Credit ~~Facility.~~Facility, net of an allowance for up to $75 million in outstanding letters of credit commitments. Throughout the nine months ended September 30, 2017, the Company made periodic withdrawals and payments on the Revolving Credit Facility as part of its debt management plans. The maximum amount outstanding at any time during the nine months ended September 30, 2017 on the Revolving Credit Facility was $300 million. As of ~~June~~September 30, 2017, the Company had ~~$227~~$533 million available under the Revolving Credit Facility, net of ~~$205 million of revolving loans outstanding and $18~~$17 million in letters of credit. Revolving credit borrowings bear interest at a variable base rate plus an applicable margin based on the Company’s total leverage ratio. Interest on the Revolving Credit Facility ~~as of June 30, 2017,~~ is either (a) 1.75% over the LIBOR or (b) 0.75% over the greater of the prime lending rate in effect on such day and the federal funds effective rate published by the Federal Reserve Bank of New York plus 0.5%, provided that neither

is below 1.75%. ~~As of June 30, 2017 the Company elected to pay the lowest all-in rate of LIBOR plus the applicable margin, or 2.88%, on the Revolving Credit Facility.~~ In addition, there is an annual commitment fee, based on the Company’s total leverage ratio, on the average unused revolving credit borrowings available under the Revolving Credit Facility. Revolving credit borrowings are payable at the option of the Company throughout the term of the Senior Secured Credit Facility with the balance due in September 2021.

The Senior Secured Credit Facility requires the Company to maintain a specified maximum total senior secured leverage ratio of 5.50x when revolving loan commitments remain outstanding on the Revolving Credit Facility at the end of a fiscal quarter. As of ~~June~~September 30, 2017, the Company ~~was~~had no revolving loans outstanding; however the Company would have been in compliance with the maximum total senior secured leverage ratio, achieving a ~~1.79x~~1.19x ratio. Additionally, within the terms of the Senior Secured Credit Facility, a senior secured leverage ratio at or below 4.00x results in the elimination of excess cash flow payments on the Senior Secured Credit Facility for the applicable year. The Senior Secured Credit Facility also provides certain financial incentives based on our total leverage ratio. A total leverage ratio at or below 4.00x results in a 25 basis point reduction to the applicable margin on the Revolving Credit Facility, and a total leverage ratio at or below 3.50x results in a 12.5 basis point reduction to the Revolving Credit Facility commitment fee and an additional 25 basis point reduction to the applicable margin on the Revolving Credit Facility. These reductions would remain in effect as long as the Company achieves a total leverage ratio at or below the related threshold. As of ~~June~~September 30, 2017, the total leverage ratio was ~~3.16x.~~2.90x.

In addition, the Senior Secured Credit Facility, among other things, includes customary restrictions (subject to certain exceptions) on the Company’s ability to incur certain indebtedness, grant certain liens, make certain investments, declare or pay certain dividends, or repurchase shares of the Company’s common stock. As of ~~June~~September 30, 2017, the Company is in compliance with all covenants under the Senior Secured Credit Facility.

The 5.0% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 5.0% Senior Notes. The indenture governing the 5.0% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of ~~June~~September 30, 2017, the Company is in compliance with all covenants under the indenture governing the 5%5.0% Senior Notes.

In September 2017, ATI completed an offering of $400 million of 4.75% Senior Notes. The 4.75% Senior Notes were offered in a private placement exempt from registration under the Securities Act of 1933, as amended. The proceeds from the offering were used for general corporate purposes and to pay related transaction fees and expenses. As a result of the offering, the Company recorded approximately $5 million as deferred financing fees in the Condensed Consolidated Balance Sheets.

The 4.75% Senior Notes are unsecured and are guaranteed by each of ATI’s domestic subsidiaries that is a borrower under or guarantees the Senior Secured Credit Facility and are unconditionally guaranteed, jointly and severally, by any of ATI’s future domestic subsidiaries that are borrowers under or guarantee the Senior Secured Credit Facility. None of ATI’s domestic subsidiaries currently guarantee its obligations under the Senior Secured Credit Facility, and therefore none of ATI’s domestic subsidiaries currently guarantee the 4.75% Senior Notes. The indenture governing the 4.75% Senior Notes contains negative covenants restricting or limiting the Company’s ability to, among other things: incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase the Company’s capital stock, make certain investments, permit payment or dividend restrictions on certain of the Company’s subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of the Company’s assets. As of September 30, 2017, the Company is in compliance with all covenants under the indenture governing the 4.75% Senior Notes.

The Company is exposed to certain financial risk from volatility in interest rates, foreign exchange rates and commodity prices. The risk is managed through the use of financial derivative instruments including interest rate swaps, foreign currency swaps and commodity swaps, when appropriate. The Company’s current derivative instruments are used strictly as an economic hedge and not for speculative purposes. As necessary, the Company adjusts the values of the derivative instruments for counter-party or credit risk.

The Company is subject to interest rate risk related to the Senior Secured Credit Facility and enters into interest rate swap contracts that are based on the LIBOR to manage a portion of this exposure. The Company has not elected hedge accounting treatment for these derivatives, and as a result, fair value adjustments are charged directly to Interest expense, net in the Condensed Consolidated Statements of Comprehensive Income.

A summary of the Company’s interest rate derivatives as of ~~June~~September 30, 2017 and December 31, 2016 follows (dollars in millions):


	June 30, 2017					December 31, 2016					September 30, 2017					December 31, 2016
	Notional Amount		Fair Value			Notional Amount		Fair Value			Notional Amount		Fair Value			Notional Amount		Fair Value
3.44% Interest Rate Swap L, Aug 2016 – Aug 2019*	$	75	$	(3	)	$	75	$	(4	)	$	75	$	(2	)	$	75	$	(4	)
3.43% Interest Rate Swap M, Aug 2016 – Aug 2019*		100		(4	)		100		(5	)		100		(3	)		100		(5	)
3.37% Interest Rate Swap N, Aug 2016 – Aug 2019*		75		(3	)		75		(3	)		75		(2	)		75		(3	)
3.19% Interest Rate Swap O, Aug 2016 – Aug 2019*		75		(3	)		75		(3	)		75		(2	)		75		(3	)
3.08% Interest Rate Swap P, Aug 2016 – Aug 2019*		75		(2	)		75		(3	)		75		(2	)		75		(3	)
2.99% Interest Rate Swap Q, Aug 2016 – Aug 2019*		50		(1	)		50		(2	)		50		(1	)		50		(2	)
2.98% Interest Rate Swap R, Aug 2016 – Aug 2019*		50		(1	)		50		(2	)		50		(1	)		50		(2	)
2.73% Interest Rate Swap S, Aug 2016 – Aug 2019*		50		(1	)		50		(1	)		50		(1	)		50		(1	)
2.74% Interest Rate Swap T, Aug 2016 – Aug 2019*		75		(2	)		75		(2	)		75		(2	)		75		(2	)
2.66% Interest Rate Swap U, Aug 2016 – Aug 2019*		50		(1	)		50		(1	)		50		(1	)		50		(1	)
2.60% Interest Rate Swap V, Aug 2016 – Aug 2019*		50		(1	)		50		(1	)		50		(1	)		50		(1	)
2.40% Interest Rate Swap W, Aug 2016 – Aug 2019*		25		—			25		(1	)		25		—			25		(1	)
2.25% Interest Rate Swap X, Aug 2016 – Aug 2019*		50		(1	)		50		(1	)		50		(1	)		50		(1	)

* includes LIBOR floor of 1.00%	$	800	$	(23	)	$	800	$	(29	)	$	800	$	(19	)	$	800	$	(29	)

The following tabular disclosures further describe the Company’s interest rate derivative instruments and their impact on the financial condition of the Company (dollars in millions):


	June 30, 2017					December 31, 2016					September 30, 2017					December 31, 2016
	Balance Sheet Location		Fair Value			Balance Sheet Location		Fair Value			Balance Sheet Location		Fair Value			Balance Sheet Location		Fair Value
Derivatives not designated as hedging instruments:
Interest rate swaps		Other current liabilities	$	(11	)		Other current liabilities	$	(11	)		Other current liabilities	$	(10	)		Other current liabilities	$	(11	)
		Other non- current liabilities		(12	)		Other non- current liabilities		(18	)		Other non-current liabilities		(9	)		Other non-current liabilities		(18	)

Total derivatives not designated as hedging instruments			$	(23	)			$	(29	)			$	(19	)			$	(29	)

The following tabular disclosure describes the location and impact on the Company’s results of operations related to unrealized gain (loss) on interest rate derivatives (dollars in millions):


	Three months ended June 30,					Six months ended June 30,					Three months ended September 30,				Nine months ended September 30,
	2017		2016			2017		2016			2017		2016		2017		2016
Location of impact on results of operations
Interest expense, net	$	1	$	(4	)	$	5	$	(15	)	$	4	$	3	$	9	$	(12	)

Product warranty liability activities consist of the following (dollars in millions):


	Three months ended June 30,						Six months ended June 30,						Three months ended September 30,						Nine months ended September 30,
	2017			2016			2017			2016			2017			2016			2017			2016
Beginning balance	$	58		$	76		$	63		$	78		$	55		$	70		$	63		$	78
Payments		(8	)		(10	)		(15	)		(19	)		(8	)		(7	)		(23	)		(26	)
Increase in liability (warranty issued during period)		5			3			9			8			4			4			13			12
Net adjustments to liability		—			1			(2	)		3			(2	)		3			(4	)		6

Ending balance	$	55		$	70		$	55		$	70		$	49		$	70		$	49		$	70

As of ~~June~~September 30, 2017, the current andnon-current product warranty liabilities were ~~$21~~$22 million and ~~$34~~$27 million, respectively. As of ~~June~~September 30, 2016, the current andnon-current product warranty liabilities were $28 million and $42 million, respectively.

As of ~~June~~September 30, 2017, the current andnon-current deferred revenue were ~~$28~~$33 million and ~~$68~~$75 million, respectively. As of ~~June~~September 30, 2016, the current andnon-current deferred revenue were $24 million and ~~$60~~$61 million, respectively.


	Three months ended June 30,						Six months ended June 30,						Three months ended September 30,						Nine months ended September 30,
	2017			2016			2017			2016			2017			2016			2017			2016
Beginning balance	$	96		$	80		$	94		$	79		$	96		$	84		$	94		$	79
Increases		6			9			14			16			21			7			35			23
Revenue earned		(6	)		(5	)		(12	)		(11	)		(9	)		(6	)		(21	)		(17	)

Ending balance	$	96		$	84		$	96		$	84		$	108		$	85		$	108		$	85

Deferred revenue recorded in current andnon-current liabilities related to extended transmission coverage (“ETC”) as of ~~June~~September 30, 2017 were ~~$27~~$29 million and ~~$68~~$70 million, respectively. Deferred revenue recorded in current andnon-current liabilities related to ETC as of ~~June~~September 30, 2016 were $24 million and ~~$60~~$61 million, respectively.

Components of net periodic benefit cost consist of the following (dollars in millions):


	Pension Plans						Post-retirement Benefits						Pension Plans						Post-retirement Benefits
	Three months ended June 30,						Three months ended June 30,						Three months ended September 30,						Three months ended September 30,
	2017			2016			2017			2016			2017			2016			2017			2016
Net periodic benefit cost:
Service cost	$	3		$	3		$	1		$	1		$	3		$	3		$	—		$	1
Interest cost		1			1			1			2			1			2			2			1
Expected return on assets		(2	)		(1	)		—			—			(1	)		(2	)		—			—
Prior service cost		—			—			(1	)		(1	)		—			—			(1	)		(1	)

Net periodic benefit cost	$	2		$	3		$	1		$	2		$	3		$	3		$	1		$	1


	Pension Plans						Post-retirement Benefits
	Six months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016
Net periodic benefit cost:
Service cost	$	6		$	6		$	1		$	1
Interest cost		3			3			3			4
Expected return on assets		(4	)		(3	)		—			—
Prior service cost		—			—			(2	)		(2	)

Net periodic benefit cost	$	5		$	6		$	2		$	3

For the three and ~~six~~nine months ended ~~June~~September 30, 2017, the Company recorded total tax expense of ~~$51~~$59 million and ~~$95~~$154 million, respectively. The effective tax rate for both the three and nine months ended September 30, 2017 was 35%. For the three and nine months ended September 30, 2016, the Company recorded total tax expense of $26 million and $93 million, respectively. The effective tax rate for the three and ~~six~~nine months ended June 30, 2017 was 35%. For the three and six months ended June 30, 2016, the Company recorded total tax expense of $38 million and $67 million, respectively. The effective tax rate for the three and six months ended JuneSeptember 30, 2016 was 37% and 38%., respectively. The decrease in effective tax rate for the three and ~~six~~nine months ended ~~June~~September 30, 2017 was principally driven by increased U.S. income tax deductions and discrete activity related to ~~the~~ excess tax benefit from stock-based compensation.

The need to establish a valuation allowance against the deferred tax assets is assessed periodically based on amore-likely-than-not realization threshold, in accordance with authoritative accounting guidance. Appropriate consideration is given to all positive and negative evidence related to that realization. This assessment considers, among other matters, the nature, frequency and severity of recent losses, forecasts of future profitability, the duration of statutory carry forward periods, experience with tax attributes expiring unused, and tax planning alternatives. The weight given to these considerations depends upon the degree to which they can be objectively verified.

The Company continues to provide for a valuation allowance on certain of its foreign deferred tax assets. The Company has determined, based on the evaluation of both objective and subjective evidence available, that this valuation allowance is necessary and that it is more likely than not that the deferred tax assets are not fully realizable.

In accordance with the FASB’s authoritative guidance on accounting for uncertainty in income taxes, the Company has recorded a liability for unrecognized tax benefits related to a 2010 Research & Development Credit as of ~~June~~September 30, 2017 and December 31, 2016. The accounting guidance prescribes a recognition threshold and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. All of the Company’s returns will remain subject to examination by the various taxing authorities for the duration of the applicable statute of limitations (generally three years from the later of the date of filing or the due date of the return).

The following tables reconcile changes in Accumulated other comprehensive loss (“AOCL”) by component (net of tax, dollars in millions):


	Three months ended												Three months ended
	Available-for- sale securities			Defined benefit pension items			Foreign currency items			Total			Available-for- sale securities			Defined benefit pension items			Foreign currency items			Total
AOCL as of March 31, 2016	$	(5	)	$	(21	)	$	(30	)	$	(56	)
AOCL as of June 30, 2016													$	(6	)	$	(21	)	$	(30	)	$	(57	)

Other comprehensive loss before reclassifications		(1	)		—			—			(1	)		—			—			1			1
Amounts reclassified from AOCL		—			(1	)		—			(1	)		—			(1	)		—			(1	)
Income tax		—			1			—			1			—			—			—			—

Net current period other comprehensive loss	$	(1	)	$	—		$	—		$	(1	)

AOCL as of June 30, 2016	$	(6	)	$	(21	)	$	(30	)	$	(57	)

AOCL as of March 31, 2017	$	(7	)	$	(19	)	$	(34	)	$	(60	)

Other comprehensive income before reclassifications		—			—			4			4
Amounts reclassified from AOCL		—			(1	)		—			(1	)
Income tax		(1	)		1			—			—

Net current period other comprehensive (loss) income	$	(1	)	$	—		$	4		$	3		$	—		$	(1	)	$	1		$	—

AOCL as of June 30, 2017	$	(8	)	$	(19	)	$	(30	)	$	(57	)
AOCL as of September 30, 2016													$	(6	)	$	(22	)	$	(29	)	$	(57	)


	Six months ended
	Available-for- sale securities			Defined benefit pension items			Foreign currency items			Total
AOCL as of December 31, 2015	$	(6	)	$	(20	)	$	(33	)	$	(59	)

Other comprehensive income before reclassifications		—			—			3			3
Amounts reclassified from AOCL		—			(2	)		—			(2	)
Income tax		—			1			—			1

Net current period other comprehensive (loss) income	$	—		$	(1	)	$	3		$	2

AOCL as of June 30, 2016	$	(6	)	$	(21	)	$	(30	)	$	(57	)

AOCL as of December 31, 2016	$	(7	)	$	(18	)	$	(38	)	$	(63	)
AOCL as of June 30, 2017													$	(8	)	$	(19	)	$	(30	)	$	(57	)

Other comprehensive (loss) income before reclassifications		(1	)		—			8			7			(1	)		—			6			5
Amounts reclassified from AOCL		—			(2	)		—			(2	)		—			(1	)		—			(1	)
Income tax		—			1			—			1			1			—			—			1

Net current period other comprehensive (loss) income	$	(1	)	$	(1	)	$	8		$	6		$	—		$	(1	)	$	6		$	5

AOCL as of June 30, 2017	$	(8	)	$	(19	)	$	(30	)	$	(57	)
AOCL as of September 30, 2017													$	(8	)	$	(20	)	$	(24	)	$	(52	)

Prior service cost ~~and actuarial loss are~~is included in the computation of the Company’s net periodic benefit cost. Please see NOTE K “Employee Benefit Plans” for additional details.

The Company has an agreement with the Environmental Protection Agency to perform remedial activities at the Company’s Indianapolis, Indiana manufacturing facilities related to historical soil and groundwater contamination. As of ~~June~~September 30, 2017, the Company had a liability recorded in the amount of $13 million.

The Company is party to various legal actions and administrative proceedings and subject to various claims arising in the ordinary course of business. These proceedings primarily involve commercial claims, product liability claims, personal injury claims and workers’ compensation claims. The Company believes that the ultimate liability, if any, in excess of amounts already provided for in the condensed consolidated financial statements or covered by insurance on the disposition of these matters will not have a material adverse effect on the financial position, results of operations or cash flows of the Company.

The Company presents both basic and diluted earnings per share (“EPS”) amounts. Basic EPS is calculated by dividing net income by the weighted average number of common shares outstanding during the reporting period. Diluted EPS is calculated by dividing net income by the weighted average number of common shares and common equivalent shares outstanding during the reporting period that are calculated using the treasury stock method for stock-based awards. The treasury stock method assumes that the Company uses the proceeds from the exercise of awards to repurchase common stock at the average market price during the period. The assumed proceeds under the treasury stock method include the purchase price that the grantee will pay in the future, compensation cost for future service that the Company has not yet recognized and any tax benefits generated when the award generates a tax deduction. If there would be a shortfall, such an amount would be a reduction of the proceeds to the extent of the gains. The diluted weighted-average common shares outstanding exclude the anti-dilutive effect of certain stock options since such options had an exercise price in excess of the monthly average market value of our common stock. For each of the three months and ~~six~~nine months ended ~~June~~September 30, 2017, 0.2 million outstanding stock options were not included in the diluted EPS calculation because they were anti-dilutive. For each of the three months and ~~six~~nine months ended ~~June~~September 30, 2016, 0.6 million outstanding stock options were not included in the diluted EPS calculation because they were anti-dilutive.

The following table reconciles the numerators and denominators used to calculate basic EPS and diluted EPS (in millions, except per share data):


		Three months ended June 30,				Six months ended June 30,				Three months ended September 30,				Nine months ended September 30,
		2017		2016		2017		2016		2017		2016		2017		2016
Net income		$	95	$	61	$	178	$	109	$	111	$	45	$	289	$	154

Weighted average shares of common stock outstanding			151		169		154		170		146		167		152		169
Dilutive effect stock-based awards			1		1		1		1		1		1		1		1

Diluted weighted average shares of common stock outstanding	��		152		170		155		171		147		168		153		170

Basic earnings per share attributable to common stockholders		$	0.63	$	0.36	$	1.16	$	0.64	$	0.75	$	0.27	$	1.91	$	0.91

Diluted earnings per share attributable to common stockholders		$	0.63	$	0.36	$	1.15	$	0.64	$	0.75	$	0.27	$	1.90	$	0.91

The Company’s current stock repurchase program was announced on November 14, 2016. The Board of Directors authorized the Company to repurchase up to $1,000 million of its common stock on the open market or through privately negotiated transactions through December 31, 2019. The timing and amount of stock purchases are subject to market conditions and corporate needs. This stock repurchase program may be extended, modified, suspended or discontinued at any time at the Company’s discretion. During the three and ~~six~~nine months ended ~~June~~September 30, 2017, the Company repurchased approximately ~~$124~~$239 million and ~~$539~~$778 million, respectively, of its common stock under the repurchase program.

On February 3, 2017, the Company entered into a stock repurchase agreement with ValueAct Capital Master Fund, L.P., a related party, to repurchase 10,525,204 shares of the Company’s common stock for approximately $363 million. The shares were repurchased under the stock repurchase program approved by the Board of Directors in November 2016. The purchase closed on February 8, 2017 and was funded with cash on hand and borrowings under the Revolving Credit Facility. The shares were subsequently retired.

~~ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations~~

The following discussion and analysis is intended to help the reader understand our business, financial condition, results of operations, liquidity and capital resources. You should read this discussion in conjunction with our condensed consolidated interim financial statements and the related notes contained elsewhere in this Quarterly Report on Form10-Q.

The statements in this discussion regarding industry trends, our expectations regarding our future performance, liquidity and capital resources and othernon-historical statements are forward-looking statements. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to, the risks and uncertainties described in “Cautionary Note Regarding Forward-Looking Statements” and Part II, Item 1A “Risk Factors” below. Our actual results may differ materially from those contained in or implied by any forward-looking statements.

Allison Transmission Holdings, Inc. and its subsidiaries (“Allison,” the “Company” or “we”) design and manufacture commercial and defense fully-automatic transmissions. The business was founded in 1915 and has been headquartered in Indianapolis, Indiana since inception. Allison was an operating unit of General Motors Corporation from 1929 until 2007, when Allison once again became a stand-alone company. In March 2012, Allison began trading on the New York Stock Exchange under the symbol, “ALSN”.

We have approximately 2,600 employees and 13 different transmission product lines. Although approximately 78% of revenues were generated in North America in 2016, we have a global presence by serving customers in Europe, Asia, South America and Africa. We serve customers through a network of approximately 1,400 independent distributor and dealer locations worldwide.

Our net sales are driven by commercial vehicle production, which tends to be correlated to macroeconomic conditions. InOur 2017 ~~we expect~~net sales reflect stronger demand for North AmericaOff-Highway service parts, ~~North America~~ globalOn-Highway products and ~~Global~~ globalOff-Highway ~~products. Our full year 2017 net sales outlook also assumes price increases on certain~~ products.

North AmericaOn-Highway end market net sales were up ~~13%~~26% for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by higher demand for Rugged Duty Series and Highway Series ~~and Transit/Other Bus models, partially offset by lower demand in Pupil Transport/Shuttle~~ models.

North America Electric Hybrid-Propulsion Systems for Transit Bus end market net sales were ~~down $1~~up $11 million for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by the timing of certain transit property orders.

North AmericaOff-Highway end market net sales were up $4$16 million for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter of 2016, principally driven by higher demand from hydraulic fracturing applications.

Defense end market net sales were up $2$10 million for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by higher ~~demand for Tracked Defense.~~demand.

Outside North AmericaOn-Highway end market net sales were up ~~15%~~14% for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by higher demand in Asia and Europe.

Outside North AmericaOff-Highway end market net sales were up $7$12 million for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by improved demand in the ~~China~~mining and energy ~~sector.~~sectors.

Service ~~parts, support equipment~~Parts, Support Equipment and ~~other~~Other end market net sales were up ~~53%~~45% for the ~~second~~third quarter 2017 compared to the ~~second~~third quarter 2016, principally driven by higher demand for North AmericaOff-Highway service parts, ~~North America~~ globalOn-Highway service parts and ~~Global Support Equipment.~~global support equipment.

We generate our net sales primarily from the sale of transmissions, transmission parts, support equipment, defense kits, engineering services, royalties and extended transmission coverage to a wide array of original equipment manufacturers, distributors and the U.S. government. Sales are recorded net of provisions for customer allowances and other rebates. Engineering services are recorded as net sales in accordance with the terms of the contract. The associated costs are recorded in cost of sales. We also have royalty agreements with third parties that provide net sales as a result of joint efforts in developing marketable products.

Our primary components of cost of sales are purchased parts, the overhead expense related to our manufacturing operations and direct labor associated with the manufacture and assembly of transmissions and parts. For the ~~six~~nine months ended ~~June~~September 30, 2017, direct material costs were approximately ~~69%~~70%, overhead costs were approximately 24%, and direct labor costs were approximately 7%6% of total cost of sales. We are subject to changes in our cost of sales caused by movements in underlying commodity prices. We seek to hedge against this risk by using commodity swap contracts and long-term supply agreements (“LTSAs”). See Part I, Item 3 “Quantitative and Qualitative Disclosures about Market Risk—Commodity Price Risk” included below.

The principal components of our selling, general and administrative expenses are salaries and benefits for our office personnel, advertising and promotional expenses, product warranty expense, expenses relating to certain information technology systems and amortization of our intangible assets.

We incur costs in connection with research and development programs that are expected to contribute to future earnings. Such costs are expensed as incurred.

We use Adjusted Earnings before Interest, Taxes, Depreciation, and Amortization (“EBITDA”) and Adjusted EBITDA margin to measure our operating profitability. We believe that Adjusted EBITDA and Adjusted EBITDA margin provide management, investors and creditors with useful measures of the operational results of our business and increase theperiod-to-period comparability of our operating profitability and comparability with other companies. Adjusted EBITDA margin is also used in the calculation of management’s incentive compensation program. The most directly comparable U.S. generally accepted accounting principles (“GAAP”) measure to Adjusted EBITDA is Net income. Adjusted EBITDA is calculated as the earnings before interest expense, income tax expense, amortization of intangible assets, depreciation of property, plant and equipment and other adjustments as defined by Allison Transmission, Inc.’s (“ATI”) TermB-3 Loan due 2022 (“TermB-3 Loan”, and together with the revolving portion of ATI’s senior secured credit facility (“Revolving Credit Facility”), defined as the “Senior Secured Credit Facility”). Adjusted EBITDA margin is calculated as Adjusted EBITDA divided by net sales.

We use Adjusted free cash flow to evaluate the amount of cash generated by our business that, after the capital investment needed to maintain and grow our business and certain mandatory debt service requirements, can be used for repayment of debt, stockholder distributions and strategic opportunities, including investing in our business and strengthening our balance sheet. We believe that Adjusted free cash flow enhances the understanding of the cash flows of our business for management, investors and creditors. Adjusted free cash flow is also used in the calculation of management’s incentive compensation program. The most directly comparable GAAP measure to Adjusted free cash flow is Net cash provided by operating activities.

The following is a reconciliation of Net income to Adjusted EBITDA and Adjusted EBITDA margin and a reconciliation of Net cash provided by operating activities to Adjusted free cash flow:


	Three months ended June 30,						Six months ended June 30,						Three months ended September 30,						Nine months ended September 30,
(unaudited, dollars in millions)	2017			2016			2017			2016			2017			2016			2017			2016
Net income (GAAP)	$	95		$	61		$	178		$	109		$	111		$	45		$	289		$	154
plus:
Income tax expense		51			38			95			67			59			26			154			93
Interest expense, net		27			28			52			62			26			22			78			84
Amortization of intangible assets		23			23			45			46			22			23			67			69
Depreciation of property, plant and equipment		20			21			39			42			21			21			60			63
Stock-based compensation expense (a)		4			2			6			4			2			2			8			6
Technology-related investment expense (b)		3			—			3			—
Dual power inverter module units extended coverage (b)														(2	)		—			(2	)		1
Unrealized loss (gain) on foreign exchange (c)		1			1			(1	)		2			2			(1	)		1			1
Unrealized loss (gain) on commodity hedge contracts (d)		1			(1	)		—			(2	)
Stockholder activism expenses (e)		—			—			—			4
Dual power inverter module units extended coverage (f)		—			—			—			1
Technology-related investment expense (d)														—			1			3			1
Expenses related to long-term debt refinancing (e)														—			12			—			12
Unrealized gain on commodity hedge contracts (f)														—			—			—			(2	)
Stockholder activism expenses (g)														—			—			—			4

Adjusted EBITDA (Non-GAAP)	$	225		$	173		$	417		$	335		$	241		$	151		$	658		$	486

Net sales (GAAP)	$	580		$	475		$	1,079		$	937		$	595		$	434		$	1,674		$	1,371
Adjusted EBITDA margin (Non-GAAP)		38.8	%		36.5	%		38.6	%		35.8	%		40.5	%		34.7	%		39.3	%		35.4	%

Net cash provided by operating activities (GAAP)	$	166		$	170		$	277		$	288		$	215		$	128		$	492		$	416
(Deductions) or additions to reconcile to Adjusted free cash flow:
Additions of long-lived assets		(12	)		(16	)		(20	)		(22	)		(20	)		(14	)		(40	)		(36	)
Stockholder activism expenses (e)		—			3			—			4
Stockholder activism expenses (g)														—			—			—			4
Excess tax benefit from stock-based compensation (h)														—			1			—			1

Adjusted free cash flow (Non-GAAP)	$	154		$	157		$	257		$	270		$	195		$	115		$	452		$	385

The following table sets forth certain financial information for the three months ended ~~June~~September 30, 2017 and 2016. The following table and discussion should be read in conjunction with the information contained in our condensed consolidated financial statements and the notes thereto included in Part I, Item 1 of this Quarterly Report on Form10-Q.


	Three months ended June 30,												Three months ended September 30,
*(unaudited, dollars in millions)*	2017			% of net sales			2016			% of net sales			2017			% of net sales			2016			% of net sales
Net sales	$	580			100	%	$	475			100	%	$	595			100	%	$	434			100	%
Cost of sales		290			50			248			52			293			49			230			53

Gross profit		290			50			227			48			302			51			204			47
Operating expenses:
Selling, general and administrative		88			15			78			16
Selling, general and administrative expenses														78			13			79			18
Engineering — research and development		25			4			22			5			26			5			21			5

Total operating expenses		113			19			100			21			104			18			100			23

Operating income		177			31			127			27			198			33			104			24
Interest expense, net		(27	)		(5	)		(28	)		(6	)		(26	)		(4	)		(22	)		(5	)
Other expense, net		(4	)		(1	)		—			—
Expenses related to long-term debt refinancing														—			—			(12	)		(3	)
Other (expense) income, net														(2	)		—			1			—

Income before income taxes		146			25			99			21			170			29			71			16
Income tax expense		(51	)		(9	)		(38	)		(8	)		(59	)		(10	)		(26	)		(6	)

Net income	$	95			16	%	$	61			13	%	$	111			19	%	$	45			10	%

Net sales for the quarter ended ~~June~~September 30, 2017 were ~~$580~~$595 million compared to ~~$475~~$434 million for the quarter ended ~~June~~September 30, 2016, an increase of ~~22%~~37%. The increase was principally driven by a ~~$47~~$58 million, or ~~53%~~26%, increase in net sales in the North AmericaOn-Highway end market principally driven by higher demand for Rugged Duty Series and Highway Series models, a $43 million, or 45%, increase in net sales in the Service Parts, Support Equipment and Other end market principally driven by higher demand for North AmericaOff-Highway service parts, ~~North America~~ globalOn-Highway service parts and ~~Global Support Equipment,~~global support equipment, a ~~$35~~$16 million ~~or 13%,~~ increase in net sales in the North America ~~On-Highway~~Off-Highway end market principally driven by higher demand ~~for Rugged Duty Series, Highway Series and Transit/Other Bus models, partially offset~~from hydraulic fracturing applications, a $12 million increase in net sales in the Outside North AmericaOff-Highway end market principally driven by ~~lower~~improved demand in ~~Pupil Transport/Shuttle models,~~the mining and energy sectors, an $11 million, or ~~15%~~14%, increase in net sales in the Outside North AmericaOn-Highway end market principally driven by higher demand in Asia and Europe, ~~a $7~~an $11 million ~~or 233%, increase in net sales in the Outside North America Off-Highway end market principally driven by improved demand in the China energy sector, a $4 million, or 400%,~~ increase in net sales in the North America Off-Highway end market principally driven by higher demand from hydraulic fracturing applications, and a $2 million, or 7%, increase in net sales in the Defense end market principally driven by higher demand for Tracked Defense, partially offset by a $1 million, or 6%, decrease in net sales in the North America Hybrid PropulsionElectric Hybrid-Propulsion Systems for Transit Bus end market principally driven by the timing of certain transit property ~~orders.~~orders, and a $10 million, or 40%, increase in net sales in the Defense end market principally driven by higher demand.

Cost of sales for the quarter ended ~~June~~September 30, 2017 was ~~$290~~$293 million compared to ~~$248~~$230 million for the quarter ended ~~June~~September 30, 2016, an increase of ~~17%~~27%. The increase was principally driven by increased ~~direct~~ material costs ~~commensurate with increased net sales, $4 million of higher incentive compensation expense~~ and ~~increased~~ manufacturing expenses commensurate with increased net ~~sales.~~sales and $2 million of higher incentive compensation expense.

Gross profit for the quarter ended ~~June~~September 30, 2017 was ~~$290~~$302 million compared to ~~$227~~$204 million for the quarter ended ~~June~~September 30, 2016, an increase of ~~28%~~48%. The increase was principally driven by ~~$61~~$101 million related to increased net sales and ~~$10~~$7 million of price increases on certain products, partially offset by $4 million of ~~higher incentive compensation expense and $3~~unfavorable material costs, $4 million of increased manufacturing expense commensurate with increased net ~~sales.~~sales and $2 million of higher incentive compensation expense. Gross profit as a percent of net sales for the quarter was 2% higher than for the same period in 2016 principally driven by ~~increased~~favorable sales volume and price increases on certain products, partially offset by unfavorable material costs and higher incentive compensation expense.

Selling, general and administrative expenses for the quarter ended ~~June~~September 30, 2017 were ~~$88~~$78 million compared to ~~$78~~$79 million for the quarter ended ~~June~~September 30, 2016, ~~an increase~~a decrease of ~~13%~~1%. The ~~increase~~decrease was principally driven by $6$3 million of ~~higher incentive compensation expense, $2~~favorable product warranty adjustments and $3 million of favorable DPIM adjustments, partially offset by increased commercial activities spending and $2 million of higher ~~stock-based~~incentive compensation expense.

Engineering expenses for the quarter ended ~~June~~September 30, 2017 were ~~$25~~$26 million compared to ~~$22~~$21 million for the quarter ended ~~June~~September 30, 2016, an increase of ~~14%~~24%. The increase was principally driven by $1increased product initiatives spending and $2 million of higher incentive compensation ~~expense and increased product initiatives spending.~~expense.

Interest expense, net for the quarter ended ~~June~~September 30, 2017 was ~~$27~~$26 million compared to ~~$28~~$22 million for the quarter ended ~~June~~September 30, 2016, ~~a decrease~~an increase of 4%18%. The ~~decrease~~increase was principally driven by ~~$13~~$12 million of higher interest expense for ATI’s 5.0% Senior Notes due September 2024 (“5.0% Senior Notes”) that were issued in September 2016, $1 million of interest expense related to revolving loans outstanding on our Revolving Credit Facility and $1 million of higher interest expense for our interest rate derivatives that became effective in August 2016, partially offset by $10 million of lower interest expense as a result of debt repayments related to ATI’s TermB-3 Loan, $5$1 million of favorablemark-to-market adjustments for our interest rate derivatives and $1 million of lower amortization of deferred financing ~~fees, partially offset by~~fees.

In September 2016, we refinanced our Senior Secured Credit Facility, resulting in aone-time expense of $12 million ~~of interest expense~~ for ~~ATI’s 5.0% Senior Notes due~~the three months ended September 2024 (“5.0% Senior Notes”), $4 million of interest expense for our interest rate derivatives that became effective in August 2016 and $2 million of interest expense related to revolving loans outstanding on our Revolving Credit Facility.30, 2016.

Other ~~expense,~~(expense) income, net for the quarter ended ~~June~~September 30, 2017 was $4($2) million compared to $0$1 million for the quarter ended ~~June~~September 30, 2016. The change in Other ~~expense,~~(expense) income, net was principally driven by $3$2 million of 2017 losses on intercompany financing, $1 million of 2016 gains on intercompany financing and $1 million of higher foreign exchange losses, partially offset by $1 million of 2016 technology-related investment expense for investments inco-development agreements to expand our position in transmission ~~technologies and $1 million of 2016 gains on commodity derivative contracts.~~technologies.

Income tax expense for the quarter ended ~~June~~September 30, 2017 was ~~$51~~$59 million resulting in an effective tax rate of 35% versus an effective tax rate of ~~38%~~37% for the quarter ended ~~June~~September 30, 2016. The decrease in the effective tax rate was principally driven by increased U.S. income tax deductions and discrete activity related to ~~the~~ excess tax benefit from stock-based compensation.

Comparison of ~~six~~nine months ended ~~June~~September 30, 2017 and 2016

The following table sets forth certain financial information for the ~~six~~nine months ended ~~June~~September 30, 2017 and 2016. The following table and discussion should be read in conjunction with the information contained in our condensed consolidated financial statements and the notes thereto included in Part I, Item 1 of this Quarterly Report on Form10-Q.


	Six months ended June 30,												Nine months ended September 30,
*(unaudited, dollars in millions)*	2017			% of net sales			2016			% of net sales			2017			% of net sales			2016			% of net sales
Net sales	$	1,079			100	%	$	937			100	%	$	1,674			100	%	$	1,371			100	%
Cost of sales		538			50			495			53			831			50			725			53

Gross profit		541			50			442			47			843			50			646			47
Operating expenses:
Selling, general and administrative		167			16			161			17
Selling, general and administrative expenses														245			15			240			17
Engineering — research and development		48			4			43			5			74			4			64			5

Total operating expenses		215			20			204			22			319			19			304			22

Operating income		326			30			238			25			524			31			342			25
Interest expense, net		(52	)		(5	)		(62	)		(6	)		(78	)		(5	)		(84	)		(6	)
Other expense, net		(1	)		—			—			—
Expenses related to long-term debt refinancing														—			—			(12	)		(1	)
Other (expense) income, net														(3	)		—			1			—

Income before income taxes		273			25			176			19			443			26			247			18
Income tax expense		(95	)		(9	)		(67	)		(7	)		(154	)		(9	)		(93	)		(7	)

Net income	$	178			16	%	$	109			12	%	$	289			17	%	$	154			11	%

Net sales for the ~~six~~nine months ended ~~June~~September 30, 2017 were ~~$1,079~~$1,674 million compared to ~~$937~~$1,371 million for the ~~six~~nine months ended ~~June~~September 30, 2016, an increase of ~~15%~~22%. The increase was principally driven by ~~an $80~~a $123 million, or 46%, increase in net sales in the Service Parts, Support Equipment and Other end market principally driven by higher demand for North America service parts and ~~Global Support Equipment,~~global support equipment, a ~~$33~~$91 million, or 6%12%, increase in net sales in the North AmericaOn-Highway end market principally driven by higher demand for Rugged Duty Series and ~~Transit/Other Bus~~Highway Series models, a ~~$13~~$24 million, or 9%11%, increase in net sales in the Outside North AmericaOn-Highway end market principally driven by higher demand in Asia and Europe, a ~~$10~~$22 million ~~or 167%,~~ increase in net sales in the Outside North AmericaOff-Highway end market principally driven by higher demand in the ~~energy~~mining and ~~mining~~energy sectors, a $4$16 million increase in net sales in the North AmericaOff-Highway end market principally driven by higher demand from hydraulic fracturing applications, a $14 million, or 8%18%, increase in net sales in the Defense end market principally driven by ~~Wheeled and Tracked Defense,~~higher demand, and a $2$13 million, or 6%32%, increase in net sales in the North America ~~Hybrid Propulsion~~Electric Hybrid-Propulsion Systems for Transit Bus end market principally driven by the timing of certain transit property orders.

Cost of sales for the ~~six~~nine months ended ~~June~~September 30, 2017 was ~~$538~~$831 million compared to ~~$495~~$725 million for the ~~six~~nine months ended ~~June~~September 30, 2016, an increase of 9%15%. The increase was principally driven by increased ~~direct~~ material costs and manufacturing expenses commensurate with increased net sales and $7$9 million of higher incentive compensation expense.

Gross profit for the ~~six~~nine months ended ~~June~~September 30, 2017 was ~~$541~~$843 million compared to ~~$442~~$646 million for the ~~six~~nine months ended ~~June~~September 30, 2016, an increase of ~~22%~~30%. The increase was principally driven by ~~$83~~$184 million related to increased net sales and ~~$22~~$29 million of price increases on certain products, partially offset by $7$9 million of higher incentive compensation ~~expense.~~expense, $5 million of unfavorable material costs, and $2 million of higher manufacturing expense commensurate with increased net sales. Gross profit as a percent of net sales for the ~~six~~nine months ended ~~June~~September 30, 2017 was 3% higher than for the same period in 2016 principally driven by increased sales volume and price increases on certain products, partially offset by higher incentive compensation ~~expense.~~expense and unfavorable material costs.

Selling, general and administrative expenses for the ~~six~~nine months ended ~~June~~September 30, 2017 were ~~$167~~$245 million compared to ~~$161~~$240 million for the ~~six~~nine months ended ~~June~~September 30, 2016, an increase of 4%2%. The increase was principally driven by ~~$11~~$13 million of higher incentive compensation expense, $2 million of higher stock-based compensation expense and ~~$2 million of~~ increased commercial activities spending, partially offset by $7 million of favorable product warranty adjustments, $4 million of stockholder activism expenses in 2016 that did not recur in 2017 and $4 million of favorable ~~product warranty adjustments and a $1 million unfavorable 2016~~ DPIM ~~adjustment.~~adjustments.

Engineering expenses for the ~~six~~nine months ended ~~June~~September 30, 2017 were ~~$48~~$74 million compared to ~~$43~~$64 million for the ~~six~~nine months ended ~~June~~September 30, 2016, an increase of ~~12%~~16%. The increase was principally driven by $3$5 million of higher incentive compensation expense and ~~$2 million of~~ increased product initiatives spending.

Interest expense, net for the ~~six~~nine months ended ~~June~~September 30, 2017 was ~~$52~~$78 million compared to ~~$62~~$84 million for the ~~six~~nine months ended ~~June~~September 30, 2016, a decrease of ~~16%~~7%. The decrease was principally driven by ~~$20 million of favorable mark-to-market adjustments for our interest rate derivatives, $25~~$35 million of lower interest expense as a result of debt repayments related to ATI’s TermB-3 Loan, ~~and $1~~$21 million of favorablemark-to-market adjustments for our interest rate derivatives and $2 million of lower ~~amortization of~~ deferred financing fees, partially offset by ~~$25~~$37 million of interest expense for ATI’s 5.0% Senior Notes $8that were issued in September 2016, $9 million of higher interest expense for our interest rate derivatives that became effective in August 2016 and $3$4 million of interest expense related to revolving loans outstanding on our Revolving Credit Facility.

In September 2016, we refinanced our Senior Secured Credit Facility, resulting in aone-time expense of $12 million for the nine months ended September 30, 2016.

Other ~~expense,~~(expense) income, net for the ~~six~~nine months ended ~~June~~September 30, 2017 was $1($3) million compared to $0$1 million for the ~~six~~nine months ended ~~June~~September 30, 2016. The change in Other ~~expense,~~(expense) income, net was principally driven by $3$2 million of higher technology-related investment expense for investments inco-development agreements to expand our position in transmission technologies, ~~partially offset by $2~~$1 million of ~~2016~~higher foreign exchange losses and $1 million of higher losses on intercompany financing.

Income tax expense for the ~~six~~nine months ended ~~June~~September 30, 2017 was ~~$95~~$154 million resulting in an effective tax rate of 35% versus an effective tax rate of 38% for the ~~six~~nine months ended ~~June~~September 30, 2016. The decrease in the effective tax rate was principally driven by increased U.S. income tax deductions and discrete activity related to ~~the~~ excess tax benefit from stock-based compensation.

We generate cash primarily from our operating activities to fund our operating, investing and financing activities. Our principal uses of cash are operating expenses, capital expenditures, debt service, stock repurchases, dividends on common stock and working capital needs. We had total available cash and cash equivalents of ~~$85~~$210 million and $205 million as of ~~June~~September 30, 2017 and December 31, 2016, respectively. Of the available cash and cash equivalents, approximately ~~$85~~$210 million and $124 million were deposited in operating accounts as of September 30, 2017 and December 31, 2016, respectively, while ~~$0 and~~ approximately $81 million were invested in U.S. government backed securities as of ~~June 30, 2017 and~~ December 31, ~~2016, respectively.~~2016.

As of ~~June~~September 30, 2017, the total of cash and cash equivalents held by foreign subsidiaries was ~~$57~~$71 million, the majority of which was located in Europe and China. The geographic location of our cash aligns with our business growth strategy. We manage our worldwide cash requirements considering available funds among the subsidiaries through which we conduct our business and the cost effectiveness with which those funds can be accessed. As a result, we do not currently anticipate any local liquidity restrictions to preclude us from funding our targeted expectations or operating needs with local resources.

If we distribute our foreign cash balance to the U.S. or to other foreign subsidiaries, we could be required to accrue and pay U.S. taxes. For example, we would be required to accrue and pay additional U.S. taxes if we repatriate earnings from certain foreign subsidiaries whose earnings we have asserted are permanently reinvested outside of the U.S. Foreign earnings for which we assert permanent reinvestment outside the U.S. ~~consists~~consist primarily of earnings of our Europe and China subsidiaries. We currently do not foresee a need to repatriate any earnings from these subsidiaries for which we have asserted permanent reinvestment.

Our liquidity requirements are significant, primarily due to our debt service requirements. As of ~~June~~September 30, 2017, we had ~~$1,387~~$1,179 million of indebtedness associated with ATI’s ~~Senior Secured Credit Facility, of which $1,182 million is associated with the~~ TermB-3 Loan, ~~and $205 million is associated with the Revolving Credit Facility, and~~ $1,000 million of indebtedness associated with ATI’s 5.0% Senior ~~Notes.~~Notes and $400 million of indebtedness associated with ATI’s 4.75% Senior Notes due October 2027 (“4.75% Senior Notes”). The minimum required quarterly principal payment on ATI’s TermB-3 Loan through its maturity date of September 2022 is $3 million. There are no required quarterly principal payments on ATI’s ~~Revolving Credit Facility or~~ 5.0% Senior Notes and 4.75% Senior Notes.

Our ability to make payments on and to refinance our indebtedness and to fund planned capital expenditures will depend on our ability to generate cash in the future. This is subject to general economic, financial, competitive, legislative, regulatory and other factors that may be beyond our control. We made principal payments of ~~$73~~$293 million and ~~$131~~$424 million on the Senior Secured Credit Facility during the three and ~~six~~nine months ended ~~June~~September 30, 2017, respectively. We made principal payments of $6$1,200 million and ~~$12~~$1,212 million on the Senior Secured Credit Facility during the three months and ~~six~~nine months ended ~~June~~September 30, 2016, respectively.

The Senior Secured Credit Facility provides for a ~~$450~~$550 million Revolving Credit Facility, net of an allowance for up to $75 million in outstanding letters of credit commitments. Throughout the nine months ended September 30, 2017, we made periodic withdrawals and payments on the Revolving Credit Facility as part of our debt management plans. The maximum amount outstanding at any time during the nine months ended September 30, 2017 on the Revolving Credit Facility was $300 million. As of ~~June~~September 30, 2017, we had ~~$227~~$533 million available under the Revolving Credit Facility, net of ~~$205 million of revolving loans outstanding and $18~~$17 million in letters of credit. As of September 30, 2017, we had no outstanding revolving loans outstanding. If we have revolving loan commitments outstanding on the Revolving Credit Facility at the end of a fiscal quarter, the Senior Secured Credit Facility requires us to maintain a specified maximum total senior secured leverage ratio of 5.50x. Additionally, within the terms of the Senior Secured Credit Facility, a senior secured leverage ratio at or below 4.00x results in the elimination of excess cash flow payments on the Senior Secured Credit Facility for the applicable year. As of ~~June~~September 30, 2017, our senior secured leverage ratio was ~~1.79x.~~1.19x. The Senior Secured Credit Facility also provides certain financial incentives based on our total leverage ratio. A total leverage ratio at or below 4.00x results in a 25 basis point reduction to the applicable margin on our Revolving Credit Facility, and a total leverage ratio at or below 3.50x results in a 12.5 basis point reduction to the Revolving Credit Facility commitment fee and an additional 25 basis point reduction to the applicable margin on our Revolving Credit Facility. These reductions would remain in effect as long as we achieve a total leverage ratio at or below the related threshold. As of ~~June~~September 30, 2017, our total leverage ratio was ~~3.16x.~~2.90x.

In addition, the Senior Secured Credit Facility includes, among other things, customary restrictions (subject to certain exceptions) on our ability to incur certain indebtedness, grant certain liens, make certain investments, declare or pay certain dividends, or repurchase shares of our common stock. The ~~indenture~~indentures governing the 5.0% Senior Notes ~~contains~~and 4.75% Senior Notes contain negative covenants restricting or limiting our ability to, among other things, incur or guarantee additional indebtedness, incur liens, pay dividends on, redeem or repurchase our capital stock, make certain investments, permit payment or dividend restrictions on certain of our subsidiaries, sell assets, engage in certain transactions with affiliates, and consolidate or merge or sell all or substantially all of our assets. As of ~~June~~September 30, 2017, we are in compliance with all covenants under the Senior Secured Credit Facility and ~~indenture~~indentures governing the 5.0% Senior Notes and 4.75% Senior Notes.

Our credit ratings are reviewed by Moody’s Investors Service (“Moody’s”) and Fitch Ratings (“Fitch”). In September ~~2016,~~2017, our credit ratings were reviewed by Moody’s and Fitch. Moody’s held our corporate rating at ‘Ba2’ and ~~assigned ‘Ba1’~~our 5.0% Senior Notes rating at ‘Ba3’, upgraded our TermB-3 Loan rating to ~~the Term B-3 Loan~~‘Baa3’, and assigned ‘Ba3’ to the ~~5.0%~~4.75% Senior Notes. Fitch held our corporate rating at ‘BB’, our TermB-3 Loan rating at ‘BB+’, and our 5.0% Senior Notes rating at ‘BB’ and assigned ~~‘BB+’ to the Term B-3 Loan and~~ ‘BB’ to the ~~5.0%~~4.75% Senior Notes.

On November 14, 2016, our Board of Directors authorized us to purchase up to $1,000 million of our common stock under a stock repurchase program. During the three and ~~six~~nine months ended ~~June~~September 30, 2017, we repurchased approximately ~~$124~~$239 million and ~~$539~~$778 million, respectively, of our common stock under the repurchase program.

The following table shows our sources and uses of funds for the ~~six~~nine months ended ~~June~~September 30, 2017 and 2016 (in millions):


	Six months ended June,						Nine months ended September 30,
*Statements of Cash Flows Data*	2017			2016			2017			2016
Cash flows provided by operating activities	$	277		$	288		$	492		$	416
Cash flows used for investing activities	$	(23	)	$	(22	)	$	(43	)	$	(37	)
Cash flows used for financing activities	$	(376	)	$	(153	)	$	(447	)	$	(466	)

Generally, cash provided by operating activities has been adequate to fund our operations. Due to fluctuations in our cash flows and the growth in our operations, it may be necessary from time to time in the future to borrow under the Senior Secured Credit Facility to meet cash demands. We anticipate cash provided by operating activities, cash and cash equivalents and borrowing capacity under the Senior Secured Credit Facility will be sufficient to meet our cash requirements for the next twelve months.

Operating activities for the ~~six~~nine months ended ~~June~~September 30, 2017 generated ~~$277~~$492 million of cash compared to ~~$288~~$416 million for the ~~six~~nine months ended ~~June~~September 30, 2016. The ~~decrease~~increase was principally driven by increased gross profit, higher accounts payable and higher deferred revenue, partially offset by higher accounts receivable, ~~commensurate with increased net sales,~~ increased cash income taxes, higher inventories, increased cash interest expense and increased incentive compensation ~~payments, partially offset by increased gross profit and higher accounts payable.~~payments.

Investing activities for the ~~six~~nine months ended ~~June~~September 30, 2017 used ~~$23~~$43 million of cash compared to ~~$22~~$37 million for the ~~six~~nine months ended ~~June~~September 30, 2016. The increase was principally driven by $3an increase of $4 million in capital expenditures and an increase of ~~investments~~$2 million in technology-related ~~initiatives, partially offset by $2 million of lower additions of long-lived assets.~~initiatives. The ~~decrease~~increase in capital expenditures was principally driven by ~~intra-year movement in the timing of~~ spending related to investments in productivity and replacement ~~programs.~~programs and higher product initiatives spending.

Financing activities for the ~~six~~nine months ended ~~June~~September 30, 2017 used ~~$376~~$447 million of cash compared to ~~$153~~$466 million for the ~~six~~nine months ended ~~June~~September 30, 2016. The ~~increase~~decrease was principally driven by ~~$447~~$603 million of increased ~~stock repurchases, partially offset by $205~~net debt borrowings, $14 million of ~~net borrowings under our Revolving Credit Facility, $9~~lower debt financing fees, $8 million of lower dividend payments and $5 million of increased proceeds from ~~the exercise of~~common stock ~~options, $6~~issuance, partially offset by $609 million of ~~decreased principal payments on long-term debt and $5 million~~increased repurchases of ~~decreased dividend payments.~~common stock.

We are a party to various legal actions and administrative proceedings and subject to various claims arising in the ordinary course of business, including those relating to commercial transactions, product liability, personal injury and workers’ compensation, safety, health, taxes, environmental and other matters. For more information, see NOTE N, “Commitments and Contingencies” of our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form10-Q.

A discussion of our critical accounting policies and significant accounting estimates are described in Part II, Item 7 “Management’s Discussion and Analysis” section in our Annual Report on Form10-K for the year ended December 31, 2016 as filed with the Securities and Exchange Commission on February 24, 2017. The preparation of the condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of some assets and liabilities and, in some instances, the reported amounts of revenues and expenses during the applicable reporting period. Actual results could differ materially from these estimates. Changes in estimates are recorded in results of operations in the period that the events or circumstances giving rise to such changes occur. Within the context of these critical accounting estimates, we are not currently aware of any reasonably likely events or circumstances that would result in different policies or estimates being reported for the ~~six~~nine months ended ~~June~~September 30, 2017.

Refer to NOTE B, “Summary of Significant Accounting Policies” in Part I, Item 1, of this Quarterly Report on Form10-Q.

This Quarterly Report on Form10-Q contains forward-looking statements. The words “believe,” “expect,” “anticipate,” “intend,” “estimate” and other expressions that are predictions of or indicate future events and trends and that do not relate to historical matters identify forward-looking statements. You should not place undue reliance on these forward-looking statements. Althoughforward-looking statements reflect management’s good faith beliefs, reliance should not be placed on forward-looking statements because they involve known and unknown risks, uncertainties and other factors, which may cause the actual results, performance or achievements to differ materially from anticipated future results, performance or achievements expressed or implied by suchforward-looking statements. Forward-looking statements speak only as of the date the statements are made. We undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events, changed circumstances or otherwise. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to: risks related to our substantial indebtedness; uncertainty in the global regulatory and business environments in which we operate; our participation in markets that are competitive; the highly cyclical industries in which certain of our end users operate; the failure of markets outside North America to increase adoption of fully-automatic transmissions; the concentration of our net sales in our top five customers and the loss of any one of these; future reductions or changes in government subsidies for hybrid vehicles and other external factors impacting demand; U.S. defense spending; general economic and industry conditions; the discovery of defects in our products, resulting in delays in new model launches, recall campaigns and/or increased warranty costs and reduction in future sales or damage to our brand and reputation; our ability to prepare for, respond to and successfully achieve our objectives relating to technological and market developments, competitive threats and changing customer needs; risks associated with our international operations; labor strikes, work stoppages or similar labor disputes, which could significantly disrupt our operations or those of our principal customers; and our intention to pay dividends and repurchase shares of our common stock.

Important factors that could cause actual results to differ materially from our expectations are disclosed in Part I, Item 1A of our Annual Report on Form10-K for the year ended December 31, 2016 as filed with the Securities and Exchange Commission on February 24, 2017. All written and oral forward-looking statements attributable to us, or persons acting on our behalf, are expressly qualified in their entirety by the cautionary statements as well as other cautionary statements that are made from time to time in our public communications. You should evaluate all forward-looking statements made in this Quarterly Report on Form10-Q in the context of these risks and uncertainties.

Our exposure to market risk consists of changes in interest rates, foreign currency rate fluctuations and movements in commodity prices.

We are subject to interest rate market risk in connection with a portion of our long-term debt. Our principal interest rate exposure relates to outstanding amounts under our Senior Secured Credit Facility. Our Senior Secured Credit Facility provides for variable rate borrowings of up to ~~$1,614~~$1,712 million including ~~$432~~$533 million under our Revolving Credit Facility, net of ~~$18~~$17 million of letters of credit. Aone-eighth percent increase or decrease in assumed interest rates for the Senior Secured Credit Facility, if fully drawn, as of ~~June~~September 30, 2017 would have an impact of approximately $1 million on interest expense. As of ~~June~~September 30, 2017, we had ~~$205 million~~no outstanding borrowings under our Revolving Credit ~~Facility outstanding.~~Facility.

From time to time, we enter into interest rate swap agreements to hedge our variable interest rate debt. Below is a list of our interest rate swaps as of ~~June~~September 30, 2017:


	Counterparty	Effective Date	Notional Amount (in millions)		LIBOR Fixed Rate			Counterparty	Effective Date	Notional Amount (in millions)		LIBOR Fixed Rate
Interest Rate Swap L*	Barclays	Aug 2016-Aug 2019	$	75		3.44	%	Barclays	Aug 2016-Aug 2019	$	75		3.44	%
Interest Rate Swap M*	JP Morgan	Aug 2016-Aug 2019	$	100		3.43	%	JP Morgan	Aug 2016-Aug 2019	$	100		3.43	%
Interest Rate Swap N*	Bank of America	Aug 2016-Aug 2019	$	75		3.37	%	Bank of America	Aug 2016-Aug 2019	$	75		3.37	%
Interest Rate Swap O*	Deutsche Bank	Aug 2016-Aug 2019	$	75		3.19	%	Deutsche Bank	Aug 2016-Aug 2019	$	75		3.19	%
Interest Rate Swap P*	Barclays	Aug 2016-Aug 2019	$	75		3.08	%	Barclays	Aug 2016-Aug 2019	$	75		3.08	%
Interest Rate Swap Q*	Barclays	Aug 2016-Aug 2019	$	50		2.99	%	Barclays	Aug 2016-Aug 2019	$	50		2.99	%
Interest Rate Swap R*	Deutsche Bank	Aug 2016-Aug 2019	$	50		2.98	%	Deutsche Bank	Aug 2016-Aug 2019	$	50		2.98	%
Interest Rate Swap S*	Deutsche Bank	Aug 2016-Aug 2019	$	50		2.73	%	Deutsche Bank	Aug 2016-Aug 2019	$	50		2.73	%
Interest Rate Swap T*	Bank of America	Aug 2016-Aug 2019	$	75		2.74	%	Bank of America	Aug 2016-Aug 2019	$	75		2.74	%
Interest Rate Swap U*	Fifth Third Bank	Aug 2016-Aug 2019	$	50		2.66	%	Fifth Third Bank	Aug 2016-Aug 2019	$	50		2.66	%
Interest Rate Swap V*	Fifth Third Bank	Aug 2016-Aug 2019	$	50		2.60	%	Fifth Third Bank	Aug 2016-Aug 2019	$	50		2.60	%
Interest Rate Swap W*	Fifth Third Bank	Aug 2016-Aug 2019	$	25		2.40	%	Fifth Third Bank	Aug 2016-Aug 2019	$	25		2.40	%
Interest Rate Swap X*	Huntington Bank	Aug 2016-Aug 2019	$	50		2.25	%	Huntington Bank	Aug 2016-Aug 2019	$	50		2.25	%

* includes LIBOR floor of 1.00%

We are exposed to increased interest expense if a counterparty defaults. Refer to NOTE F, “Debt” and NOTE G, “Derivatives” of the notes to our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form10-Q.

While our net sales and costs are denominated primarily in U.S. Dollars, net sales, costs, assets and liabilities are generated in other currencies including Japanese Yen, Euro, Indian Rupee, Brazilian Real, Chinese Yuan Renminbi, Canadian Dollar and Hungarian Forint. The expansion of our business outside North America may further increase the risk that cash flows resulting from these activities may be adversely affected by changes in currency exchange rates.

Assuming current levels of foreign currency transactions, a 10% aggregate increase or decrease in the Japanese Yen, Euro, Indian Rupee and Chinese Yuan Renminbi would correspondingly change our earnings, net of tax, by an estimated $4$3 million per year. All other exposure to foreign currencies is considered immaterial.

We are subject to changes in our cost of sales caused by movements in underlying commodity prices. Approximatelytwo-thirds of our cost of sales consists of purchased components with significant raw material content. A substantial portion of the purchased parts are made of aluminum and steel. The cost of aluminum parts include an adjustment factor on future purchases for fluctuations in aluminum prices based on accepted industry indices. In addition, a substantial amount of steel-based contracts also include an index-based component. As our costs change, we are able to pass through a portion of the changes in commodity prices to certain of our customers according to our LTSAs. We historically have not entered into long-term purchase contracts related to the purchase of aluminum and steel. We currently hold commodity swaps that are intended to hedge forecasted aluminum purchases. Based on our forecasted demand for 2017 and 2018, as of ~~June~~September 30, 2017, the hedge contracts cover approximately ~~23%~~21% and 0% of our aluminum requirements, respectively. We do not hold financial instruments for trading or speculative purposes.

Assuming current levels of commodity purchases, a 10% increase or decrease in the price of aluminum and steel would correspondingly change our earnings, net of tax, by approximately $2 million and $5 million per year, respectively. This includes the partial offset of our hedging contracts described above.

Many of our LTSAs have incorporated a cost-sharing arrangement related to potential future commodity price fluctuations. Our hedging policy is that we hedge our exposure and do not hedge any portion of the customers’ exposure. For purposes of the sensitivity analysis above, the impact of these cost sharing arrangements has not been included.

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules13a-15(e) and15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this report. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs.

Based on the evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form10-Q were effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting (as defined in Rules13a-15(f) and15d-15(f) under the Exchange Act) during the period covered by this Quarterly Report on Form10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

From time to time, we are a party to various legal actions in the normal course of our business, including those related to commercial transactions, product liability, personal injury and workers’ compensation, safety, health, taxes, environmental and other matters. See NOTE N, “Commitments and Contingencies” in the notes to the condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form10-Q.

There have been no material changes from our risk factors as previously reported in Part I, Item 1A of our Annual Report on Form10-K for the year ended December 31, 2016 as filed with the Securities and Exchange Commission on February 24, 2017.

The following table sets forth information related to our repurchases of our common stock on a monthly basis infor the three months ended ~~June~~September 30, 2017:

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


Delaware		26-0414014
(State of Incorporation)		(I.R.S. Employer Identification Number)

One Allison Way Indianapolis, IN		46222
(Address of Principal Executive Offices)		(Zip Code)


		Page
	PART I. FINANCIAL INFORMATION

Item 1.	Financial Statements		~~2-4~~2-18

	Condensed Consolidated Balance Sheets		2

	Condensed Consolidated Statements of Comprehensive Income		3

	Condensed Consolidated Statements of Cash Flows		4

	Notes to Condensed Consolidated Financial Statements		~~5-17~~5-18

Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		~~18-28~~19-29

Item 3.	Quantitative and Qualitative Disclosures About Market Risk		~~29-30~~30-31

Item 4.	Controls and Procedures		3132

	PART II. OTHER INFORMATION

Item 1.	Legal Proceedings		3233

Item 1A.	Risk Factors		3233

Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds		3233

Item 6.	Exhibits		3334

	Signatures		3435


	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs⁽¹⁾		Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans
April 1– April 30, 2017		—	$	—		—	$	523,556,847
May 1 – May 31, 2017		632,892	$	38.30		632,892	$	499,310,652
June 1 – June 30, 2017		2,666,587	$	37.60		2,666,587	$	399,019,729

Total		3,299,479	$	$37.73		3,299,479


	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs⁽¹⁾		Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans⁽¹⁾
July 1 – July 31, 2017		1,995,937	$	37.80		1,995,937	$	323,609,815
August 1 – August 31, 2017		1,868,672	$	35.26		1,868,672	$	257,716,837
September 1 – September 30, 2017		2,795,216	$	34.96		2,795,216	$	160,005,528

Total		6,659,825	$	35.89		6,659,825


	2018		2019		2020		2021		2022		Thereafter
Amortization expense	$	87	$	86	$	50	$	45	$	43	$	52


	As of June 30, 2017		As of December 31, 2016
Payroll and related costs	$	54	$	52
Sales allowances		29		24
Taxes payable		19		10
Accrued interest payable		16		17
Vendor buyback obligation		13		13
Derivative liabilities		11		11
Defense price reduction reserve		9		9
Other accruals		13		14

Total	$	164	$	150


	As of September 30, 2017		As of December 31, 2016
Payroll and related costs	$	67	$	52
Sales allowances		32		24
Accrued interest payable		28		17
Taxes payable		19		10
Vendor buyback obligation		13		13
Derivative liabilities		11		11
Defense price reduction reserve		9		9
Other accruals		14		14

Total	$	193	$	150


	Amounts reclassified from AOCL
AOCL Components	Three months ended June 30, 2017			Three months ended June 30, 2016			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of defined benefit pension items:
Prior service cost	$	1		$	1		Cost of sales

Total reclassifications, before tax	$	1			1		Income before income taxes
Income tax		(1	)		(1	)	Income tax expense

Total reclassifications	$	—		$	—		Net of tax


	Amounts reclassified from AOCL
AOCL Components	Six months ended June 30, 2017			Six months ended June 30, 2016			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of defined benefit pension items:
Prior service cost	$	2		$	2		Cost of sales

Total reclassifications, before tax	$	2			2		Income before income taxes
Income tax		(1	)		(1	)	Income tax expense

Total reclassifications	$	1		$	1		Net of tax


	Nine months ended
	Available-for- sale securities			Defined benefit pension items			Foreign currency items			Total
AOCL as of December 31, 2015	$	(6	)	$	(20	)	$	(33	)	$	(59	)

Other comprehensive loss before reclassifications		—			—			4			4
Amounts reclassified from AOCL		—			(3	)		—			(3	)
Income tax		—			1			—			1

Net current period other comprehensive (loss) income	$	—		$	(2	)	$	4		$	2

AOCL as of September 30, 2016	$	(6	)	$	(22	)	$	(29	)	$	(57	)


AOCL as of December 31, 2016	$	(7	)	$	(18	)	$	(38	)	$	(63	)

Other comprehensive (loss) income before reclassifications		(2	)		—			14			12
Amounts reclassified from AOCL		—			(3	)		—			(3	)
Income tax		1			1			—			2

Net current period other comprehensive (loss) income	$	(1	)	$	(2	)	$	14		$	11

AOCL as of September 30, 2017	$	(8	)	$	(20	)	$	(24	)	$	(52	)


End Market	Q2 2017 Net Sales		Q2 2016 Net Sales		% Variance
North America On-Highway	$	299	$	264		13	%
North America Hybrid Propulsion Systems for Transit Bus		15		16		(6	%)
North America Off-Highway		5		1		400	%
Defense		30		28		7	%
Outside North America On-Highway		85		74		15	%
Outside North America Off-Highway		10		3		233	%
Service Parts, Support Equipment and Other		136		89		53	%

Total Net Sales	$	580	$	475		22	%


End Market	Q3 2017 Net Sales		Q3 2016 Net Sales		% Variance
North AmericaOn-Highway	$	282	$	224		26	%
North America Electric Hybrid-Propulsion Systems for Transit Bus		19		8		138	%
North AmericaOff-Highway		17		1		1,600	%
Defense		35		25		40	%
Outside North AmericaOn-Highway		89		78		14	%
Outside North AmericaOff-Highway		14		2		600	%
Service Parts, Support Equipment and Other		139		96		45	%

Total Net Sales	$	595	$	434		37	%


Exhibit Number		Description

4.1		Indenture, dated as of September 26, 2017, between Allison Transmission, Inc. and Wilmington Trust, National Association, as Trustee (including form of Note) (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form8-K filed September 26, 2017)

10.1		Incremental Facility Joinder Agreement, dated as of September 26, 2017, supplementing the Amended and Restated Credit Agreement, dated as of September 23, 2016, among Allison Transmission Holdings, Inc., Allison Transmission, Inc., as Borrower, the several banks and other financial institutions or entities from time to time parties thereto as lenders and Citicorp North America, Inc., as Administrative Agent (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form8-K filed September 26, 2017)

31.1		Certification of Chief Executive Officer pursuant to Rule13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith)

31.2		Certification of Chief Financial Officer pursuant to Rule13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith)

32.1		Certification of Periodic Report by Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith)

101.INS		XBRL Instance Document

101.SCH		XBRL Taxonomy Extension Schema Document

101.CAL		XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF		XBRL Taxonomy Extension Definition Linkbase Document

101.LAB		XBRL Taxonomy Extension Label Linkbase Document

101.PRE		XBRL Taxonomy Extension Presentation Linkbase Document


	ALLISON TRANSMISSION HOLDINGS, INC.

Date: ~~August 1,~~October 31, 2017	By:	/s/ Lawrence E. Dewey
		Name:	Lawrence E. Dewey
		Title:	Chairman of the Board and Chief Executive Officer (Principal Executive Officer)

Date: ~~August 1,~~October 31, 2017	By:	/s/ David S. Graziosi
		Name:	David S. Graziosi
		Title:	President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

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