UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2015

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File No. 001-35456

ALLISON TRANSMISSION HOLDINGS, INC.

(Exact Name of Registrant as Specified In Its Charter)

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)

(317) 242-5000

(Registrant’s Telephone Number, Including Area Code)

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

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

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

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

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

As of April 14, 2015, there were 179,668,380 shares of Common Stock outstanding.

INDEX

		Page
Item 1.	Financial Statements	3-5
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Comprehensive Income	4
	Condensed Consolidated Statements of Cash Flows	5
	Notes to Condensed Consolidated Financial Statements	6-17
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18-27
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	28-29
Item 4.	Controls and Procedures	30
	PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	31
Item 1A.	Risk Factors	31
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	31
Item 6.	Exhibits	32
	Signatures	33

2

PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements

Allison Transmission Holdings, Inc.

Condensed Consolidated Balance Sheets

(unaudited, dollars in millions, except per share data)

	March 31, 2015			December 31, 2014
ASSETS
Current Assets
Cash and cash equivalents	$	265.1		$	263.0
Accounts receivable — net of allowance for doubtful accounts of $0.4 and $0.3, respectively		231.3			207.4
Inventories		160.9			143.5
Deferred income taxes, net		113.0			119.7
Other current assets		25.0			24.4
Total Current Assets		795.3			758.0
Property, plant and equipment, net		495.6			514.6
Intangible assets, net		1,487.7			1,512.0
Goodwill		1,941.0			1,941.0
Deferred income taxes, net		1.3			1.3
Other non-current assets		68.6			77.3
TOTAL ASSETS	$	4,789.5		$	4,804.2
LIABILITIES
Current Liabilities
Accounts payable	$	157.1		$	151.7
Product warranty liability		23.7			24.0
Current portion of long-term debt		17.9			17.9
Deferred revenue		20.8			20.6
Other current liabilities		114.7			131.7
Total Current Liabilities		334.2			345.9
Product warranty liability		53.4			59.6
Deferred revenue		51.4			48.7
Long-term debt		2,450.9			2,502.6
Deferred income taxes		256.3			238.2
Other non-current liabilities		224.3			211.4
TOTAL LIABILITIES		3,370.5			3,406.4
Commitments and contingencies (see NOTE O)
STOCKHOLDERS’ EQUITY
Common stock, $0.01 par value, 1,880,000,000 shares authorized, 179,990,818 shares issued and outstanding and 179,488,247 shares issued and outstanding, respectively		1.8			1.8
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		1,681.5			1,651.0
Accumulated deficit		(212.9	)		(215.5	)
Accumulated other comprehensive loss, net of tax		(51.4	)		(39.5	)
TOTAL STOCKHOLDERS’ EQUITY		1,419.0			1,397.8
TOTAL LIABILITIES & STOCKHOLDERS’ EQUITY	$	4,789.5		$	4,804.2

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

3

Allison Transmission Holdings, Inc.

Condensed Consolidated Statements of Comprehensive Income

(unaudited, dollars in millions, except per share data)

	Three months ended March 31,
	2015			2014
Net sales	$	503.6		$	493.6
Cost of sales		264.4			271.1
Gross profit		239.2			222.5
Selling, general and administrative expenses		73.4			83.2
Engineering — research and development		22.2			24.5
Loss associated with impairment of long-lived assets		1.3			—
Operating income		142.3			114.8
Interest income		0.2			0.2
Interest expense		(37.1	)		(35.3	)
Other income (expense), net		2.8			(0.4	)
Income before income taxes		108.2			79.3
Income tax expense		(39.8	)		(27.2	)
Net income	$	68.4		$	52.1
Basic earnings per share attributable to common stockholders	$	0.38		$	0.29
Diluted earnings per share attributable to common stockholders	$	0.38		$	0.28
Dividends declared per common share	$	0.15		$	0.12
Comprehensive income, net of tax	$	56.5		$	54.2

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

4

Allison Transmission Holdings, Inc.

Condensed Consolidated Statements of Cash Flows

(unaudited, dollars in millions)

	Three months ended March 31,
	2015			2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	68.4		$	52.1
Add (deduct) items included in net income not using (providing) cash:
Deferred income taxes		34.4			27.5
Amortization of intangible assets		24.3			24.7
Depreciation of property, plant and equipment		21.4			23.3
Unrealized loss (gain) on derivatives		8.0			(4.2	)
Excess tax benefit from stock-based compensation		(7.8	)		(5.0	)
Stock-based compensation		2.1			3.3
Amortization of deferred financing costs		1.9			2.0
Loss associated with impairment of long-lived assets		1.3			—
Other		(2.1	)		0.0
Changes in assets and liabilities:
Accounts receivable		(26.8	)		(52.0	)
Inventories		(20.1	)		(14.9	)
Accounts payable		5.7			22.9
Other assets and liabilities		(30.6	)		18.9
Net cash provided by operating activities		80.1			98.6
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions of long-lived assets		(1.3	)		(11.1	)
Investments in technology-related initiatives		—			(3.8	)
Collateral for interest rate derivatives		—			(0.3	)
Proceeds from disposal of assets		0.1			0.1
Net cash used for investing activities		(1.2	)		(15.1	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt		(51.7	)		(2.8	)
Repurchase of common stock		(35.4	)		(100.0	)
Dividend payments		(27.0	)		(21.7	)
Proceeds from exercise of stock options		21.2			14.5
Excess tax benefit from stock-based compensation		7.8			5.0
Taxes paid related to net share settlement of equity awards		(0.5	)		—
Debt financing fees		—			(0.7	)
Net cash used for financing activities		(85.6	)		(105.7	)
Effect of exchange rate changes on cash		8.8			(2.6	)
Net increase (decrease) in cash and cash equivalents		2.1			(24.8	)
Cash and cash equivalents at beginning of period		263.0			184.7
Cash and cash equivalents at end of period	$	265.1		$	159.9
Supplemental disclosures:
Interest paid	$	18.5		$	29.4
Income taxes paid	$	2.5		$	2.1

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

5

Allison Transmission Holdings, Inc.

Notes to Condensed Consolidated Financial Statements

(UNAUDITED)

NOTE A. OVERVIEW

Overview

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 2,700 employees and 13 different transmission product lines. Although approximately 80% of revenues were generated in North America in 2014, we have a global presence by serving customers in Europe, Asia, South America and Africa. We serve customers through an independent network of approximately 1,400 independent distributor and dealer locations worldwide.

NOTE B. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The condensed consolidated financial statements as of and for the three months ended March 31, 2015 and 2014 have been prepared in accordance with accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-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 statements 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 Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission (“SEC”) on February 20, 2015. Certain immaterial reclassifications have been made in the condensed consolidated financial statements of prior periods to conform to the current period presentation. These reclassifications have no impact on previously reported net income, total stockholders’ equity or cash flows. The interim period financial results for the three month period presented are not necessarily indicative of results to be expected for any other interim period or for the entire year.

Use of Estimates

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. Significant estimates include, but are not limited to, allowance for doubtful accounts, sales allowances, government price adjustments, fair market values and future cash flows associated with goodwill, indefinite life intangibles, long-lived asset impairment tests, useful lives for depreciation and amortization, warranty liability, 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.

6

Recently Issued Accounting Pronouncements

In April 2015, the Financial Accounting Standards Board (“FASB”) issued authoritative accounting guidance to simplify the presentation of the debt issuance costs. The guidance requires that the debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs are not affected. The guidance is effective for public entities for interim and annual reporting periods beginning after December 15, 2015, but can be early-adopted. Management is assessing the potential impact of the adoption of this guidance on the Company’s consolidated financial statements.

In August 2014, the FASB issued authoritative accounting guidance on the disclosure of uncertainties about an entity’s ability to continue as a going concern. The guidance requires management to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that financial statements are available to be issued when applicable) and to provide related footnote disclosures. The guidance is effective prospectively for interim and annual reporting periods beginning after December 15, 2016, but can be early-adopted. While the adoption of this guidance is not expected to have an effect on the Company’s consolidated financial statements, it could affect the disclosure applied under these circumstances in the future.

In May 2014, the FASB issued authoritative accounting guidance on a company’s accounting for revenue from contracts with customers. The guidance applies to all companies that enter into contracts with customers to transfer goods, service 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 improved disclosures regarding the nature, timing, amount and uncertainty of revenue that is recognized. The FASB originally proposed the guidance was effective prospectively for interim and annual reporting periods beginning after December 15, 2016. On April 1, 2015, the FASB decided to propose a one-year deferral of the effective date. Under the proposal, the guidance would be effective for public entities for interim and annual reporting periods beginning after December 15, 2017. The proposal also would permit both public and nonpublic entities to adopt the guidance as early as the original public entity effective date. Early adoption prior to that date would not be permitted. Management is assessing the potential impact of the adoption of this guidance on the Company’s consolidated financial statements.

NOTE C. INVENTORIES

Inventories consisted of the following components (dollars in millions):

	March 31, 2015		December 31, 2014
Purchased parts and raw materials	$	84.0	$	72.3
Work in progress		6.0		6.1
Service parts		47.6		46.5
Finished goods		23.3		18.6
Total inventories	$	160.9	$	143.5

Inventory components shipped to third parties, primarily cores, parts to re-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 K, “Other Current Liabilities” for more information.

7

NOTE D. GOODWILL AND OTHER INTANGIBLE ASSETS

As of March 31, 2015 and December 31, 2014, the carrying amount of the Company’s Goodwill was $1,941.0 million. The following presents a summary of other intangible assets (dollars in millions):

	March 31, 2015							December 31, 2014
	Intangible assets, gross		Accumulated amortization			Intangible assets, net		Intangible assets, gross		Accumulated amortization			Intangible assets, net
Other intangible assets:
Trade name	$	870.0	$	—		$	870.0	$	870.0	$	—		$	870.0
Customer relationships — defense		62.3		(28.7	)		33.6		62.3		(27.9	)		34.4
Customer relationships — commercial		831.8		(439.5	)		392.3		831.8		(426.9	)		404.9
Proprietary technology		476.3		(291.5	)		184.8		476.3		(282.0	)		194.3
Non-compete agreement		17.3		(13.3	)		4.0		17.3		(12.8	)		4.5
Patented technology — defense		28.2		(25.4	)		2.8		28.2		(24.5	)		3.7
Tooling rights		4.5		(4.3	)		0.2		4.5		(4.3	)		0.2
Patented technology — commercial		260.6		(260.6	)		—		260.6		(260.6	)		—
Total	$	2,551.0	$	(1,063.3	)	$	1,487.7	$	2,551.0	$	(1,039.0	)	$	1,512.0

As of March 31, 2015 and December 31, 2014, the net carrying value of our Goodwill and other intangibles was $3,428.7 million and $3,453.0 million, respectively.

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

	2016		2017		2018		2019		2020		Thereafter
Amortization expense	$	92.4	$	89.7	$	87.2	$	85.7	$	49.3	$	140.6

NOTE E. FAIR VALUE OF FINANCIAL INSTRUMENTS

In accordance with the FASB’s authoritative accounting guidance on fair value measurements, fair value is the 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 March 31, 2015 and December 31, 2014, the Company did not have any Level 3 financial assets or liabilities.

8

The Company’s assets and liabilities that are measured at fair value include cash and 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’s available-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, foreign currency forward contracts and commodity 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 foreign currency contracts consist of forward rate contracts which are intended to hedge exposure of transactions denominated in certain currencies and reduce the impact of currency price volatility on the Company’s financial results. The commodity contracts consist of forward rate contracts which are intended to hedge exposure of transactions involving purchases of component parts and energy to power our facilities, reducing the impact of commodity price volatility on the Company’s financial results.

For the fair value measurement of foreign currency derivatives, the Company uses forward foreign exchange rates received from the issuing financial institution. These rates are periodically corroborated by comparing to third-party broker quotes. The foreign currency hedges are accounted for within the authoritative accounting guidance set forth on accounting for derivative instruments and hedging activities and have been recorded at fair value based upon quoted market rates. The fair values are included in Other current and non-current assets and liabilities in the Condensed Consolidated Balance Sheets. The Company generally does not elect to apply hedge accounting for these foreign currency contracts, and as a result, unrealized fair value adjustments and realized gains and losses are recorded in Other expense, net in the Condensed Consolidated Statements of Comprehensive Income during the period of change.

For the fair value measurement of commodity derivatives, the Company uses forward prices received from the issuing financial institution. These rates are periodically corroborated by comparing to third-party broker quotes. The commodity derivatives are accounted for within the authoritative accounting guidance set forth on accounting for derivative instruments and hedging activities and have been recorded at fair value based upon quoted market rates. The fair values are included in Other current and non-current assets and liabilities in the Condensed Consolidated Balance Sheets. The Company has either not qualified for or not elected hedge accounting treatment for these commodity contracts, and as a result, unrealized fair value adjustments and realized gains and losses are recorded in Other expense, net in the Condensed Consolidated Statements of Comprehensive Income.

For the fair value measurement of interest rate derivatives, the Company uses valuations from the issuing financial institution. The Company corroborates the valuation through the use of third-party valuation services using a standard replacement valuation model. The floating-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 and non-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 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 March 31, 2015 and December 31, 2014 (dollars in millions):

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)						TOTAL
	March 31, 2015			December 31, 2014			March 31, 2015			December 31, 2014			March 31, 2015			December 31, 2014
Cash equivalents	$	101.0		$	55.0		$	—		$	—		$	101.0		$	55.0
Available-for-sale securities		4.8			8.6			—			—			4.8			8.6
Rabbi trust assets		4.5			2.9			—			—			4.5			2.9
Deferred compensation obligation		(4.5	)		(2.9	)		—			—			(4.5	)		(2.9	)
Derivative assets		—			—			—			0.0			—			0.0
Derivative liabilities		—			—			(23.7	)		(15.4	)		(23.7	)		(15.4	)
Total	$	105.8		$	63.6		$	(23.7	)	$	(15.4	)	$	82.1		$	48.2

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NOTE F. DEBT

Long-term debt and maturities are as follows (dollars in millions):

	March 31, 2015		December 31, 2014
Long-term debt:
Senior Secured Credit Facility Term B-2 Loan, variable, due 2017	$	236.2	$	283.6
Senior Secured Credit Facility Term B-3 Loan, variable, due 2019		1,761.3		1,765.6
Senior Notes, fixed 7.125%, due 2019		471.3		471.3
Total long-term debt	$	2,468.8	$	2,520.5
Less: current maturities of long-term debt		17.9		17.9
Total long-term debt less current portion	$	2,450.9	$	2,502.6

As of March 31, 2015, the Company had $236.2 million of indebtedness associated with Allison Transmission, Inc.’s (“ATI”), the Company’s wholly-owned subsidiary, Senior Secured Credit Facility Term B-2 Loan due 2017 (“Term B-2 Loan”) and $1,761.3 million of indebtedness associated with ATI’s Senior Secured Credit Facility Term B-3 Loan due 2019 (“Term B-3 Loan” and together with the Term B-2 Loan and revolving credit facility defined as the “Senior Secured Credit Facility”). The Company also had indebtedness of $471.3 million of ATI’s 7.125% senior cash pay notes due May 2019 (“7.125% Senior Notes”).

The fair value of the Company’s long-term debt obligations as of March 31, 2015 was $2,488.0 million. The fair value is based on quoted Level 2 market prices of the Company’s debt as of March 31, 2015. 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.

Senior Secured Credit Facility

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 Term B-2 Loan, as of March 31, 2015, is at the Company’s option, either (a) 2.75% over the LIBOR or (b) 1.75% over the greater of the prime lending rate provided by the British Banking Association or the federal funds effective rate published by the Federal Reserve Bank of New York plus 0.50%. Interest on the Term B-3 Loan, as of March 31, 2015, is equal to the LIBOR (which may not be less than 1.00%) plus 2.50% based on the Company’s total leverage ratio. As of March 31, 2015, these rates were approximately 2.93% and 3.50% on the Term B-2 Loan and Term B-3 Loan, respectively, and the weighted average rate on the Senior Secured Credit Facility was approximately 3.43%. The Senior Secured Credit Facility requires minimum quarterly principal payments on the Term B-2 Loan and Term B-3 Loan as well as prepayments from certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events and from a percentage of excess cash flow, if applicable. Due to voluntary prepayments, the Company has fulfilled all Term B-2 Loan required quarterly payments through its maturity date of 2017. During the first quarter of 2015, the Company made principal payments of $47.4 million on the Term B-2 loan, resulting in a loss of $0.2 million associated with the write off of related deferred debt issuance costs. The minimum required quarterly principal payment on the Term B-3 Loan is $4.4 million and remains through its maturity date of 2019. As of March 31, 2015, there had been no payments required for certain net cash proceeds of non-ordinary course asset sales and casualty and condemnation events. The remaining principal balance on each loan is due upon maturity.

The Senior Secured Credit Facility also provides for $465.0 million, net of an allowance for up to $75.0 million in outstanding letters of credit commitments. As of March 31, 2015, the Company had $455.1 million available under the revolving credit facility, net of $9.9 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. As of March 31, 2015, this rate would have been approximately 1.63%. In addition, there is an annual commitment fee, based on the Company’s total leverage ratio, which as of March 31, 2015, was equal to 0.25% of the average unused revolving credit borrowings available under the Senior Secured 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 January 2019.

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The revolving portion of 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 at the end of a fiscal quarter. In March 2014, however, the revolving lenders holding a majority of the revolving loan commitments permanently waived and agreed that no event of default would result from any non-compliance so long as there were no revolving loans outstanding as of the last day of any fiscal quarter. As of March 31, 2015, the Company had no revolving loans outstanding; however, the Company would have been in compliance with the maximum total senior secured leverage ratio, achieving a 2.27x ratio. Additionally within the terms of the Senior Secured Credit Facility, a senior secured leverage ratio at or below 3.50x 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. A total leverage ratio at or below 3.25x results in a 25 basis point reduction to the applicable margin on our Term B-3 Loan. These reductions would remain in effect as long as the Company achieves a total leverage ratio at or below the related threshold. As of March 31, 2015, the total leverage ratio was 2.89x.

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 March 31, 2015, the Company is in compliance with all covenants under the Senior Secured Credit Facility.

On March 18, 2015, ATI commenced a cash tender offer to purchase its outstanding 7.125% Senior Notes (the “Offer”). In connection with the Offer, ATI solicited consents to enter into a supplemental indenture to eliminate substantially all of the restrictive covenants, certain events of default and related provisions contained in the indenture dated as of May 6, 2011 (the “Indenture”) governing the notes. On March 31, 2015, ATI received valid consents from holders with an aggregate principal amount of $420.9 million of the 7.125% Senior Notes. Accordingly, ATI entered into a first supplemental indenture to the Indenture contingent on the execution of an amendment with the term loan lenders under its Senior Secured Credit Facility.

NOTE G. DERIVATIVES

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 forward contracts and commodity swaps. 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.

Interest Rate

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 in the Condensed Consolidated Statements of Comprehensive Income. A summary of the Company’s interest rate derivatives as of March 31, 2015 and December 31, 2014 follows (dollars in millions):

	March 31, 2015					December 31, 2014
	Notional Amount		Fair Value			Notional Amount		Fair Value
3.44% Interest Rate Swap L, Aug 2016 – Aug 2019*	$	75.0	$	(3.1	)	$	75.0	$	(2.3	)
3.43% Interest Rate Swap M, Aug 2016 – Aug 2019*		100.0		(4.1	)		100.0		(3.0	)
3.37% Interest Rate Swap N, Aug 2016 – Aug 2019*		75.0		(2.9	)		75.0		(2.1	)
3.19% Interest Rate Swap O, Aug 2016 – Aug 2019*		75.0		(2.6	)		75.0		(1.7	)
3.08% Interest Rate Swap P, Aug 2016 – Aug 2019*		75.0		(2.3	)		75.0		(1.5	)
2.99% Interest Rate Swap Q, Aug 2016 – Aug 2019*		50.0		(1.4	)		50.0		(0.9	)
2.98% Interest Rate Swap R, Aug 2016 – Aug 2019*		50.0		(1.4	)		50.0		(0.9	)
2.73% Interest Rate Swap S, Aug 2016 – Aug 2019*		50.0		(1.0	)		50.0		(0.5	)
2.74% Interest Rate Swap T, Aug 2016 – Aug 2019*		75.0		(1.5	)		75.0		(0.8	)
2.66% Interest Rate Swap U, Aug 2016 – Aug 2019*		50.0		(0.9	)		50.0		(0.4	)
2.60% Interest Rate Swap V, Aug 2016 – Aug 2019*		50.0		(0.8	)		50.0		(0.3	)
2.40% Interest Rate Swap W, Aug 2016 – Aug 2019*		25.0		(0.2	)		25.0		0.0
2.25% Interest Rate Swap X, Aug 2016 – Aug 2019*		50.0		(0.5	)		—		—
* includes LIBOR floor of 1.00%	$	800.0	$	(22.7	)	$	750.0	$	(14.4	)

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Currency Exchange

The Company’s business is subject to foreign exchange rate risk. As a result, the Company enters into various forward rate contracts that qualify as derivatives under the authoritative accounting guidance to manage certain of these exposures. Forward contracts are used to hedge forecasted transactions and known exposure of payables denominated in a foreign currency. The Company generally has not elected to apply hedge accounting under the authoritative accounting guidance and recorded the unrealized fair value adjustments and realized gains and losses associated with these contracts in Other expense, net in the Condensed Consolidated Statements of Comprehensive Income during the period of change.

The following table summarizes the outstanding foreign currency forward contracts as of March 31, 2015 and December 31, 2014 (amounts in millions):

	March 31, 2015					December 31, 2014
	Notional Amount		Fair Value			Notional Amount		Fair Value
Japanese Yen (JPY)	¥	150.0	$	(0.2	)	¥	300.0	$	(0.3	)
			$	(0.2	)			$	(0.3	)

Commodity

The Company’s business is subject to commodity price risk, primarily with component suppliers. As a result, the Company enters into various commodity swap contracts that qualify as derivatives under the authoritative accounting guidance to manage certain of these exposures. Swap contracts are used to hedge forecasted transactions either of the commodity or of components containing the commodity. The Company has not qualified for hedge accounting treatment for these commodity contracts, and as a result, unrealized fair value adjustments and realized gains and losses associated with these contracts were charged directly to Other expense, net in the Condensed Consolidated Statements of Comprehensive Income during the period of change.

The following table summarizes the outstanding commodity swaps as of March 31, 2015 and December 31, 2014 (dollars in millions):

	March 31, 2015							December 31, 2014
	Notional Amount		Quantity		Fair Value			Notional Amount		Quantity	Fair Value
Aluminum	$	12.3		6,400 metric tons	$	(0.8	)	$	11.3	6,200 metric tons	$	(0.7	)
Natural Gas		N/A		N/A		—		$	0.2	60,000 MMBtu		0.0
					$	(0.8	)				$	(0.7	)

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

	March 31, 2015				December 31, 2014
	Balance Sheet Location	Fair Value			Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Foreign currency contracts	Other current liabilities	$	(0.2	)	Other current liabilities	$	(0.3	)
Commodity contracts	Other current and non-current liabilities		(0.8	)	Other current and non-current liabilities		(0.7	)
Interest rate contracts	Other non- current liabilities		(22.7	)	Other non- current liabilities		(14.4	)
Total derivatives not designated as hedging instruments		$	(23.7	)		$	(15.4	)

The fair values of the derivatives are recorded between Other current and non-current assets and Other current and non-current liabilities as appropriate in the Condensed Consolidated Balance Sheets. As of March 31, 2015, the amounts recorded to Other current and non-current liabilities for commodity contracts were ($0.7) million and ($0.1) million, respectively.

As of December 31, 2014, the amounts recorded to Other current and non-current liabilities for commodity contracts were ($0.6) million and ($0.1) million, respectively.

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The impact on the Company’s Condensed Consolidated Statements of Comprehensive Income related to foreign currency and commodity contracts can be found in NOTE J, and the following tabular disclosure describes the location and impact on the Company’s results of operations related to unrealized (loss) gain on interest rate derivatives (dollars in millions):

	Three months ended March 31,
	2015			2014
Location of impact on results of operations
Interest Expense	$	(8.3	)	$	3.9

NOTE H. PRODUCT WARRANTY LIABILITIES

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

	Three months ended March 31,
	2015			2014
Beginning balance	$	83.6		$	90.5
Payments		(8.4	)		(8.4	)
Increase in liability (warranty issued during period)		5.9			6.3
Net adjustments to liability		(4.1	)		1.9
Accretion (for Predecessor liabilities)		0.1			0.1
Ending balance	$	77.1		$	90.4

As of March 31, 2015, the current and non-current product warranty liabilities were $23.7 million and $53.4 million, respectively. As of March 31, 2014, the current and non-current product warranty liabilities were $32.3 million and $58.1, respectively.

NOTE I. DEFERRED REVENUE

As of March 31, 2015, the current and non-current deferred revenue for Extended Transmission Coverage (“ETC”) were $20.8 million and $51.4 million, respectively. As of March 31, 2014, the current and non-current deferred revenue for ETC were $20.1 million and $43.7 million, respectively.

Deferred revenue for ETC activity (dollars in millions):

	Three months ended March 31,
	2015			2014
Beginning balance	$	69.0		$	63.6
Increases		8.2			5.5
Revenue earned		(5.0	)		(5.3	)
Ending balance	$	72.2		$	63.8

Deferred revenue recorded in current liabilities related to unearned net sales for defense contracts as of March 31, 2015 and 2014 was approximately $0.0 million and $18.6 million, respectively.

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NOTE J. OTHER INCOME (EXPENSE), NET

Other income (expense), net consists of the following (dollars in millions):

	Three months ended March 31,
	2015			2014
Gain on intercompany foreign exchange	$	2.2		$	—
Gain (loss) on foreign exchange		1.1			(0.5	)
Realized loss on derivative contracts (see NOTE G)		(0.3	)		(0.6	)
Unrealized gain on derivative contracts (see NOTE G)		0.3			0.2
Loss on repayments and repurchases of long-term debt		(0.2	)		—
Public offering fees and expenses		—			(0.3	)
Grant program income		—			0.6
Other		(0.3	)		0.2
Total	$	2.8		$	(0.4	)

For the three months ended March 31, 2015, the Company recorded a gain of $2.2 million resulting from intercompany financing transactions related to investments in plant assets for the Company’s India facility.

NOTE K. OTHER CURRENT LIABILITIES

Other current liabilities consist of the following (dollars in millions):

	As of March 31, 2015		As of December 31, 2014
Sales allowances	$	23.6	$	25.5
Payroll and related costs		23.0		50.9
Defense price reduction reserve		16.2		16.2
Accrued interest payable		13.5		5.2
Vendor buyback obligation		11.4		13.2
Taxes payable		10.4		8.5
Stock repurchase obligation		3.5		—
Derivative liabilities		0.4		0.8
Other accruals		12.7		11.4
Total	$	114.7	$	131.7

NOTE L. EMPLOYEE BENEFIT PLANS

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

	Pension Plans						Post-retirement Benefits
	Three months ended March 31,						Three months ended March 31,
	2015			2014			2015			2014
Net periodic benefit cost:
Service cost	$	3.6		$	3.3		$	0.6		$	0.5
Interest cost		1.3			1.3			1.4			1.5
Expected return on assets		(2.1	)		(1.9	)		—			—
Prior service cost		0.0			0.0			(0.9	)		(0.9	)
Loss (gain)		0.0			—			—			(0.2	)
Net periodic benefit cost	$	2.8		$	2.7		$	1.1		$	0.9

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NOTE M. INCOME TAXES

For the three months ended March 31, 2015 and 2014, the Company recorded total tax expense of $39.8 million and $27.2 million, respectively. The effective tax rate for the three months ended March 31, 2015 and 2014 was 36.8 % and 34.3 %, respectively. The change in the effective rate is principally driven by discrete activity recorded in the first quarter of 2014 resulting in a favorable tax benefit.

The need to establish a valuation allowance against the deferred tax assets is assessed periodically based on a more-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 has determined, based on the evaluation of both objective and subjective evidence available, that a domestic valuation allowance is not necessary and that it is more likely than not that the deferred tax assets are fully realizable. The Company has reached a sustained period of profitability and believes its objectively measured positive evidence outweighs the negative evidence. The Company continues to provide for a valuation allowance on certain of its foreign deferred tax assets.

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 March 31, 2015 and December 31, 2014. 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. For the year ended December 31, 2014, the return 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).

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NOTE N. ACCUMULATED OTHER COMPREHENSIVE LOSS

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

	Three months ended
	Available-for- sale securities			Defined benefit pension items			Foreign currency items			Total
AOCL as of December 31, 2013	$	1.1		$	(7.9	)	$	(14.2	)	$	(21.0	)
Other comprehensive income before reclassifications		0.2			—			2.7			2.9
Amounts reclassified from AOCL		—			(1.1	)		—			(1.1	)
Income tax		(0.1	)		0.4			—			0.3
Net current period other comprehensive income	$	0.1		$	(0.7	)	$	2.7		$	2.1
AOCL as of March 31, 2014	$	1.2		$	(8.6	)	$	(11.5	)	$	(18.9	)
AOCL as of December 31, 2014	$	(0.9	)	$	(17.0	)	$	(21.6	)	$	(39.5	)
Other comprehensive loss before reclassifications		(3.8	)		—			(8.9	)		(12.7	)
Amounts reclassified from AOCL		—			(0.9	)		—			(0.9	)
Income tax		1.4			0.3			—			1.7
Net current period other comprehensive loss	$	(2.4	)	$	(0.6	)	$	(8.9	)	$	(11.9	)
AOCL as of March 31, 2015	$	(3.3	)	$	(17.6	)	$	(30.5	)	$	(51.4	)

	Amounts reclassified from AOCL						Affected line item in the Condensed Consolidated Statements of Comprehensive Income
AOCL Components	Three months ended March 31, 2015			Three months ended March 31, 2014
Amortization of defined benefit pension items:
Prior service cost	$	0.8		$	0.8		Cost of sales
		0.1			0.1		Selling, general and administrative
		0.0			0.0		Engineering – research and development
Actuarial loss		—			0.2		Cost of sales
		—			0.0		Selling, general and administrative
		—			0.0		Engineering – research and development
Total reclassifications, before tax	$	0.9			1.1		Income before income taxes
Income tax		(0.3	)		(0.4	)	Tax expense
Total reclassifications	$	0.6		$	0.7		Net of tax

Prior service cost and actuarial loss are included in the computation of the Company’s net periodic benefit cost. Please see NOTE L for additional details.

NOTE O. COMMITMENTS AND CONTINGENCIES

Claims, Disputes, and Litigation

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.

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NOTE P. CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

As of March 31, 2015, Lawrence E. Dewey, our Chairman, President and Chief Executive Officer, and David S. Graziosi, our Executive Vice President, Chief Financial Officer and Treasurer, held approximately $100,000 and $450,000, respectively, in aggregate principal amount of the 7.125% Senior Notes.

NOTE Q. EARNINGS PER SHARE

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 that would be credited to additional paid-in-capital when the award generates a tax deduction. If there would be a shortfall resulting in a charge to additional paid-in-capital, 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 the three months ended March 31, 2015, 0.2 million of outstanding stock options were not included in the diluted EPS computation 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 March 31,
	2015		2014
Net income	$	68.4	$	52.1
Weighted average shares of common stock outstanding		180.0		182.2
Dilutive effect stock-based awards		2.4		3.7
Diluted weighted average shares of common stock outstanding		182.4		185.9
Basic earnings per share attributable to common stockholders	$	0.38	$	0.29
Diluted earnings per share attributable to common stockholders	$	0.38	$	0.28

NOTE R. COMMON STOCK

The Company’s current stock repurchase program was announced on October 30, 2014. The Board authorized management to repurchase up to $500.0 million of its common stock on the open market or through privately negotiated transactions through December 31, 2016. 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 months ended March 31, 2015, the Company repurchased approximately $38.9 million of its common stock under the repurchase program. As a result of timing between the repurchase transactions and the settlement of the repurchases, $35.4 million was settled in cash during the first quarter of 2015. The remaining $3.5 million was recorded to Other current liabilities in the Condensed Consolidated Balance Sheets for March 31, 2015 and settled the following month.

NOTE S. SUBSEQUENT EVENTS

On April 7, 2015, ATI entered into an amendment with the term loan lenders under its Senior Secured Credit Facility to add up to an additional $470.0 million of Term B-3 Loan commitments and incur term loans in an aggregate principal amount of $470.0 million. The amendment also, among other things, (i) permits prepayment, repurchase or redemption of Allison’s 7.125% Senior Notes with the proceeds of the financing and (ii) resets the period for which a prepayment premium of 1.00% will apply in the event of a repricing transaction to the six-month anniversary of the closing date of the financing. With the exception of the items noted above, the terms (including maturity and pricing) of the financing are materially the same as the terms of the existing Term B-3 Loan outstanding. Immediately following the financing, ATI purchased the tendered 7.125% Senior Notes using the proceeds from the financing in a cash payment equal to $1,042 per $1,000 aggregate principal amount of the 7.125% Senior Notes plus accrued and unpaid interests. Upon the payment, the supplemental indenture to the Indenture discussed above in NOTE F became operative.

On April 15, 2015, ATI announced that the remaining proceeds from the financing and cash on hand will be used to fund the redemption of the remaining 7.125% Senior Notes with an outstanding principal of $50.4 million, at a redemption price equal to 103.563% of the principal amount plus any accrued and unpaid interest on May 15, 2015. Please see NOTE F for more information.

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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 Form 10-Q.

The statements in this discussion regarding industry trends, our expectations regarding our future performance, liquidity and capital resources and other non-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.

Overview

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 2,700 employees and 13 different transmission product lines. Although approximately 80% of revenues were generated in North America in 2014, we have a global presence by serving customers in Europe, Asia, South America and Africa. We serve customers through an independent network of approximately 1,400 independent distributor and dealer locations worldwide.

Trends Impacting Our Business

Our net sales are driven by commercial vehicle production, which tends to be highly correlated to macroeconomic conditions. Given the increased level of uncertainty and the lack of near-term visibility and confidence in the global Off-Highway end markets and Service Parts, Support Equipment & Other end markets, we expect our full year net sales to decrease year-over-year. We also expect second quarter net sales to be lower than the same period in 2014. The anticipated year-over-year decrease in second quarter net sales is expected to occur due to higher demand in the global On-Highway end markets more than offset by lower demand in all other end markets.

First Quarter Net Sales by End Market (in millions)

End Market	Q1 2015 Net Sales		Q1 2014 Net Sales		% Variance
North America On-Highway	$	268	$	233		15	%
North America Hybrid Propulsion Systems for Transit Bus		18		24		(25	%)
North America Off-Highway		22		12		83	%
Defense		25		34		(26	%)
Outside North America On-Highway		57		64		(11	%)
Outside North America Off-Highway		16		21		(24	%)
Service Parts, Support Equipment and Other		98		106		(8	%)
Total Net Sales	$	504	$	494		2	%

North America On-Highway end market net sales were up 15% for the first quarter 2015 compared to the first quarter 2014, principally driven by higher demand for Rugged Duty Series models.

North America Hybrid-Propulsion Systems for Transit Bus end market net sales were down 25% for the first quarter 2015 compared to the first quarter 2014, principally driven by lower demand due to engine emissions improvements and non-hybrid alternatives that generally require a fully-automatic transmission (e.g. xNG).

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North America Off-Highway end market net sales were up 83% for the first quarter 2015 compared to the first quarter of 2014, principally driven by higher demand from hydraulic fracturing applications.

Defense end market net sales were down 26% for the first quarter 2015 compared to the first quarter 2014, principally driven by reductions in U.S. defense spending to longer term averages experienced during periods without active conflicts.

Outside North America On-Highway end market net sales were down 11% for the first quarter 2015 compared to the first quarter 2014, principally driven by lower demand in China.

Outside North America Off-Highway end market net sales were down 24% for the first quarter 2015 compared to the first quarter 2014, principally driven by lower demand in the mining sector.

Service parts, support equipment and other end market net sales were down 8% for the first quarter 2015 compared to the first quarter 2014, principally driven by lower demand for North America service parts.

Key Components of our Results of Operations

Net sales

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 OEMs, 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.

Cost of sales

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 three months ended March 31, 2015, direct material costs were approximately 69%, overhead costs were approximately 24%, and direct labor costs were approximately 7% 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.

Selling, general and administrative expenses

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 intangibles.

Engineering — research and development

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

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Non-GAAP Financial Measures

We use Adjusted net income to measure our overall profitability because we believe it better reflects our cash flow generation by capturing the actual cash interest paid and cash taxes paid rather than our interest expense and tax expense as calculated under accounting principles generally accepted in the United States of America (“GAAP”) and excludes the impact of the non-cash annual amortization of certain intangible assets and other certain non-recurring items. We use Adjusted EBITDA, Adjusted EBITDA excluding technology-related license expenses, Adjusted EBITDA margin, Adjusted EBITDA margin excluding technology-related license expenses and Adjusted free cash flow to evaluate and control our cash operating costs and to measure our operating profitability. We believe the presentation of Adjusted net income, Adjusted EBITDA, Adjusted EBITDA excluding technology-related license expenses, Adjusted EBITDA margin, Adjusted EBITDA margin excluding technology-related license expenses and Adjusted free cash flow enhances our investors’ overall understanding of the financial performance and cash flow of our business.

You should not consider Adjusted net income, Adjusted EBITDA, Adjusted EBITDA excluding technology-related license expenses, Adjusted EBITDA margin and Adjusted EBITDA margin excluding technology-related license expenses as an alternative to net income, determined in accordance with GAAP, as an indicator of operating performance. You should not consider Adjusted free cash flow as an alternative to net cash provided by operating activities, determined in accordance with GAAP, as an indicator of our cash flow.

A directly comparable GAAP measure to Adjusted net income, Adjusted EBITDA and Adjusted EBITDA excluding technology-related license expenses is Net income. A 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 net income, Adjusted EBITDA, Adjusted EBITDA excluding technology-related license expenses, Adjusted EBITDA margin and Adjusted EBITDA margin excluding technology-related license expenses, and a reconciliation of Net cash provided by operating activities to Adjusted free cash flow:

	For the three months ended March 31,
(unaudited, in millions)	2015			2014
Net income	$	68.4		$	52.1
plus:
Interest expense, net		36.9			35.1
Cash interest expense		(18.5	)		(29.4	)
Income tax expense		39.8			27.2
Cash income taxes		(2.5	)		(2.1	)
Amortization of intangible assets		24.3			24.7
Loss associated with impairment of long-lived assets (a)		1.3			—
Public offering expenses (b)		—			0.3
Adjusted net income	$	149.7		$	107.9
Cash interest expense		18.5			29.4
Cash income taxes		2.5			2.1
Depreciation of property, plant and equipment		21.4			23.3
Unrealized gain on foreign exchange (c)		(2.3	)		(0.3	)
Dual power inverter module units extended coverage (d)		(1.8	)		—
Unrealized (gain) loss on hedge contracts (e)		(0.2	)		0.1
Loss on repayments and repurchases of long-term debt (f)		0.2			—
Other (g)		2.1			3.3
Adjusted EBITDA	$	190.1		$	165.8
Adjusted EBITDA excluding technology-related license expenses (h)	$	190.1		$	169.1
Net sales	$	503.6		$	493.6
Adjusted EBITDA margin		37.7	%		33.6	%
Adjusted EBITDA margin excluding technology-related licenses expenses (h)		37.7	%		34.3	%
Net cash provided by operating activities	$	80.1		$	98.6
(Deductions) or additions to reconcile to Adjusted free cash flow:
Additions of long-lived assets		(1.3	)		(11.1	)
Excess tax benefit from stock-based compensation (i)		7.8			5.0
Technology-related license expenses (h)		—			3.3
Adjusted free cash flow	$	86.6		$	95.8

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(a) Represents a charge associated with the impairment of long-lived assets related to the production of the H3000 and H4000 hybrid-propulsion systems.

(b) Represents fees and expenses (recorded in Other income (expense), net) related to our secondary offering in February 2014.

(c) Represents unrealized gains (recorded in Other income (expense), net) on the mark-to-market of our foreign currency hedge contracts and on intercompany financing transactions related to investments in plant assets for our India facility.

(d) Represents an adjustment (recorded in Selling, general and administrative expenses) associated with the Dual Power Inverter Module (“DPIM”) extended coverage program liability. The DPIM liability will continue to be reviewed for any changes in estimates as additional claims data and field information become available.

(e) Represents unrealized (gains) losses (recorded in Other income (expense), net) on the mark-to-market of our commodity hedge contracts.

(f) Represents losses (recorded in Other income (expense), net) realized on the repayments and repurchases of Allison Transmission, Inc.’s, (“ATI”), our wholly owned subsidiary, long-term debt.

(g) Represents employee stock compensation expense (recorded in Cost of sales, Selling, general and administrative expenses, and Engineering – research and development).

(h) Represents payments (recorded in Engineering – research and development) for licenses to expand our position in transmission technologies.

(i) Represents the amount of tax benefit (recorded in Income tax expense) related to stock-based compensation adjusted from cash flows from operating activities to cash flows from financing activities.

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Results of Operations

Comparison of three months ended March 31, 2015 and 2014

The following table sets forth certain financial information for the three months ended March 31, 2015 and 2014. 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 Form 10-Q.

	Three months ended March 31,
(unaudited, dollars in millions)	2015			% of net sales			2014			% of net sales
Net sales	$	503.6			—		$	493.6			—
Gross profit		239.2			47	%		222.5			45	%
Operating expenses:
Selling, general and administrative expenses		73.4			15			83.2			17
Engineering — research and development		22.2			4			24.5			5
Loss associated with impairment of long-lived assets		1.3			0			—			—
Total operating expenses		96.9			19			107.7			22
Operating income		142.3			28	%		114.8			23
Other expense, net:
Interest expense, net		(36.9	)		(7	)		(35.1	)		(7	)
Other income (expense), net		2.8			1			(0.4	)		(0	)
Total other expense, net		(34.1	)		(6	)		(35.5	)		(7	)
Income before income taxes		108.2			22			79.3			16
Income tax expense		(39.8	)		(8	)		(27.2	)		(6	)
Net income	$	68.4			14	%	$	52.1			10	%

Net sales

Net sales for the quarter ended March 31, 2015 were $503.6 million compared to $493.6 million for the quarter ended March 31, 2014, an increase of 2%. The increase was principally driven by a $35.0 million, or 15%, increase in net sales of North America on-highway commercial products driven by higher North American demand from Rugged Duty Series models, and a $10.0 million, or 83%, increase in net sales of North America off-highway products driven by higher demand from hydraulic fracturing applications, partially offset by a $9.0 million, or 26%, decrease in net sales of defense products due to lower U.S. defense spending, a $8.0 million, or 8%, decrease in net sales of parts and other products driven by lower demand for North America service parts, a $7.0 million, or 11%, decrease in net sales of Outside North America on-highway commercial products driven by lower demand in China, a $6.0 million, or 25%, decrease in net sales of North America hybrid-propulsion systems for transit buses driven by lower demand due to engine emissions improvements and a $5.0 million, or 24%, decrease in net sales of Outside North America off-highway products driven by lower demand in China mining partially offset by higher demand in Europe mining. See “Trends Impacting Our Business” above for additional information on net sales by end markets.

Gross profit

Gross profit for the quarter ended March 31, 2015 was $239.2 million compared to $222.5 million for the quarter ended March 31, 2014, an increase of 8%. The increase was principally driven by $8.0 million of price increases on certain products, $7.0 million related to increased net sales, $1.0 million of favorable manufacturing performance and $1.0 million of favorable material costs.

Selling, general and administrative expense

Selling, general and administrative expenses for the quarter ended March 31, 2015 were $73.4 million compared to $83.2 million for the quarter ended March 31, 2014, a decrease of 12%. The decrease was principally driven by $2.8 million of lower 2015 product warranty expense, $1.9 million of higher 2014 product warranty expense, a $1.8 million favorable DPIM adjustment, $0.4 million of lower intangible asset amortization and decreased global commercial spending activities.

Engineering — research and development

Engineering expenses for the quarter ended March 31, 2015 were $22.2 million compared to $24.5 million for the quarter ended March 31, 2014, a decrease of 9%. The decrease was principally driven by $3.3 million of 2014 technology-related license expense to expand our position in transmission technologies, partially offset by product initiatives spending.

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Loss associated with impairment of long-lived assets

For the three months ended March 31, 2015, we recorded an approximately $1.3 million impairment loss associated with the production of the H3000 and H4000 hybrid-propulsion systems. The loss included $1.0 million of accrued expenses and a $0.3 million impairment of long-lived assets.

Interest expense, net

Interest expense, net for the quarter ended March 31, 2015 was $36.9 million compared to $35.1 million for the quarter ended March 31, 2014, an increase of 5%. The increase was principally driven by $12.2 million of unfavorable mark-to-market adjustments for our interest rate derivatives, partially offset by $8.1 million of lower interest expense as a result of the maturity of $950.0 million of interest rate derivatives, $1.7 million of lower interest expense as a result of debt repayments, $0.4 million of lower interest expense as a result of lower interest rates on ATI’s Senior Secured Credit Facility (defined as the Term B-2 Loan due 2017 (“Term B-2 Loan”) and Term B-3 Loan due 2019 (“Term B-3 Loan” ) and revolving credit facility) and $0.2 million of lower amortization of deferred financing charges.

Other income (expense), net

Other income (expense), net for the quarter ended March 31, 2015 was $2.8 million compared to ($0.4) million for the quarter ended March 31, 2014. The increase in income was principally driven by $2.2 million of foreign exchange gains on intercompany financing, $1.6 million of favorable foreign exchange, $0.3 million of lower realized losses on derivative contracts, $0.3 million of 2014 public offering fees and expenses, and $0.1 million of higher unrealized gains on derivative contracts, partially offset by $0.6 million of lower grant program income, $0.2 million of higher expenses related to debt repayments and $0.5 million of higher miscellaneous expenses.

Income tax expense

Income tax expense for the first quarter of 2015 was $39.8 million resulting in an effective tax rate of 36.8% versus an effective tax rate of 34.3% in the first quarter of 2014. The change in the effective rate is principally driven by discrete activity recorded in the first quarter of 2014 resulting in a favorable tax benefit.

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Liquidity and Capital Resources

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 $265.1 million and $263.0 million as of March 31, 2015 and December 31, 2014, respectively. Of the available cash and cash equivalents, approximately $164.1 million and $208.0 million were deposited in operating accounts while approximately $101.0 million and $55.0 million were invested in U.S. government backed securities as of March 31, 2015 and December 31, 2014, respectively.

As of March 31, 2015, the total of cash and cash equivalents held by foreign subsidiaries was $36.7 million, the majority of which was located in China, Europe and India. 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 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 cash 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 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 March 31, 2015, the Company had $236.2 million of indebtedness associated with ATI’s Senior Secured Credit Facility Term B-2 Loan and $1,761.3 million of indebtedness associated with ATI’s Senior Secured Credit Facility Term B-3 Loan. The Company also had indebtedness of $471.3 million of ATI’s 7.125% senior cash pay notes due May 2019 (“7.125% 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 $51.7 million and $2.8 million on the Senior Secured Credit Facility for the three months ended March 31, 2015 and 2014, respectively.

The Senior Secured Credit Facility also provides for $465.0 million, net of an allowance for up to $75.0 million in outstanding letters of credit commitments. As of March 31, 2015, we had $455.1 million available under the revolving credit facility, net of $9.9 million in letters of credit. Additionally within the terms of the Senior Secured Credit Facility, a senior secured leverage ratio at or below 3.50x results in the elimination of excess cash flow payments on the Senior Secured Credit Facility for the applicable year. The Senior Secured Credit Facility 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. A total leverage ratio at or below 3.25x results in a 25 basis point reduction to the applicable margin on our Term B-3 Loan. These reductions would remain in effect as long as we achieve a total leverage ratio at or below the related threshold. As of March 31, 2015, the total leverage ratio was 2.89x.

In addition to the maximum total senior secured leverage ratio for the revolving portion of the Senior Secured Credit Facility, the Senior Secured Credit Facility and the indenture governing the 7.125% Senior Notes include, among other things, customary restrictions (subject to certain exceptions) on our ability to incur certain indebtedness or liens, make certain investments, declare or pay certain dividends, or repurchase shares of our common stock. As of March 31, 2015, we are in compliance with all covenants under the Senior Secured Credit Facility.

Prior to May 15, 2015, we may redeem some or all of our 7.125% Senior Notes by paying the applicable “make-whole” premium. At any time on or after May 15, 2015, we may redeem some or all of the 7.125% Senior Notes at specified redemption prices in the governing indenture as follows:

Year	Percentage
2015		103.563	%
2016		101.781	%
2017 and thereafter		100.000	%

On March 18, 2015, ATI commenced a cash tender offer to purchase its outstanding 7.125% Senior Notes (the “Offer”). In connection with the Offer, ATI solicited consents to enter into a supplemental indenture to eliminate substantially all of the restrictive covenants, certain events of default and related provisions contained in the indenture dated as of May 6, 2011 (the “Indenture”) governing the notes. On March 31, 2015, ATI received valid consents from holders with an aggregate principal amount of $420.9 million of the 7.125% Senior Notes. Accordingly, ATI entered into a first supplemental indenture to the Indenture contingent on the execution of an amendment with the term loan lenders under its Senior Secured Credit Facility.

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On April 7, 2015, ATI entered into an amendment with the term loan lenders under its Senior Secured Credit Facility to add up to an additional $470.0 million of Term B-3 Loan commitments and incur term loans in an aggregate principal amount of $470.0 million. The amendment also, among other things, (i) permits prepayment, repurchase or redemption of Allison’s 7.125% Senior Notes with the proceeds of the financing and (ii) resets the period for which a prepayment premium of 1.00% will apply in the event of a repricing transaction to the six-month anniversary of the closing date of the financing. With the exception of the items noted above, the terms (including maturity and pricing) of the financing are materially the same as the terms of the existing Term B-3 Loan outstanding under the Senior Secured Credit Facility. Immediately following the financing, ATI purchased the tendered the 7.125% Senior Notes using the proceeds from the financing in a cash payment equal to $1,042 per $1,000 aggregate principal amount of the 7.125% Senior Notes plus accrued and unpaid interests.

On April 15, 2015, ATI announced that the remaining proceeds from the financing and cash on hand will be used to fund the redemption of the remaining 7.125% Senior Notes, with an outstanding principal of $50.4 million, at a redemption price equal to 103.563% of the principal amount plus any accrued and unpaid interest on May 15, 2015.

Our credit ratings are reviewed regularly by major debt ratings agencies such as Standard and Poor’s, Moody’s Investors Service and Fitch Ratings. In March 2015, Standard and Poor’s raised the corporate rating to ‘BB’ from ‘BB-’, and the rating of the 7.125% Senior Notes to ‘BB-’ from ‘B+’. Also in March 2015, Moody’s raised the corporate rating to ‘Ba2’ from ‘Ba3’ and affirmed the ‘B2’ rating of the 7.125% Senior Notes.

On October 30, 2014, our Board of Directors authorized us to purchase up to $500.0 million of our common stock under a stock repurchase program. For the three months ended March 31, 2015, we repurchased approximately $38.9 million of our common stock under the repurchase program. As a result of timing between the repurchase transactions and the settlement of the repurchases, $35.4 million was settled in cash during the first quarter of 2015. The remaining $3.5 million was recorded to Other current liabilities in the Condensed Consolidated Balance Sheets for March 31, 2015 and settled the following month.

The following table shows our sources and uses of funds for the three months ended March 31, 2015 and 2014 (in millions):

	Three months ended March 31,
Statement of Cash Flows Data	2015			2014
Cash flows from operating activities	$	80.1		$	98.6
Cash flows used for investing activities		(1.2	)		(15.1	)
Cash flows used for financing activities		(85.6	)		(105.7	)

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.

Cash provided by operating activities

Operating activities for the three months ended March 31, 2015 generated $80.1 million of cash compared to $98.6 million for the three months ended March 31, 2014. The decrease was principally driven by higher inventories, lower accounts payable and lower other liabilities, net, partially offset by price increases on certain products, increased net sales, decreased selling, general and administrative expenses, lower accounts receivable and lower cash interest expense.

Cash used for investing activities

Investing activities for the three months ended March 31, 2015 used $1.2 million of cash compared to $15.1 million for the three months ended March 31, 2014. The decrease was principally driven by a decrease of $9.8 million in capital expenditures and $3.8 million of lower 2015 investments in technology-related initiatives. The decrease in capital expenditures was principally driven by lower product initiatives spending and decreased productivity and replacement program spending due to timing.

Cash used for financing activities

Financing activities for the three months ended March 31, 2015 used $85.6 million of cash compared to providing $105.7 million of cash for the three months ended March 31, 2014. The decrease was principally driven by $64.6 million of lower stock repurchases and $6.5 million of increased proceeds from the exercise of stock options, partially offset by $48.9 million of increased repayments on long-term debt and $5.3 million of increased dividend payments.

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Contingencies

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, safety, health, taxes, environmental and other matters. For more information, see NOTE O of our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Critical Accounting Policies and Significant Accounting Estimates

Our principal accounting policies are described in the “Basis of Presentation and Principles of Consolidation” section in the notes to the consolidated financial statements in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on February 20, 2015. 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. Differences between actual and estimate are recorded in the period identified. Management believes the accounting estimates discussed above represent those accounting estimates requiring the exercise of judgment where a different set of judgments could result in the greatest changes to our reported results.

Off-Balance Sheet Arrangements

We are not a party to any off-balance sheet arrangements.

Recently Issued Accounting Pronouncements

Refer to NOTE B, “Summary of Significant Accounting Policies” in Part I, Item 1, of this Quarterly Report on Form 10-Q.

Certain Relationships and Related Party Transactions

As of March 31, 2015, Lawrence E. Dewey, our Chairman, President and Chief Executive Officer, and David S. Graziosi, our Executive Vice President, Chief Financial Officer and Treasurer, held approximately $100,000 and $450,000, respectively, in aggregate principal amount of the 7.125% Senior Notes.

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Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-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. Although forward-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 such forward-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: our participation in markets that are competitive; general economic and industry conditions; our ability to prepare for, respond to and successfully achieve our objectives relating to technological and market developments and changing customer needs; the failure of markets outside North America to increase adoption of fully-automatic transmissions; risks related to our substantial indebtedness; 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; the concentration of our net sales in our top five customers and the loss of any one of these; risks associated with our international operations; brand and reputational risks; our intention to pay dividends and repurchase shares of our common stock; and labor strikes, work stoppages or similar labor disputes, which could significantly disrupt our operations or those of our principal customers.

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 Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on February 20, 2015. 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 Form 10-Q in the context of these risks and uncertainties.

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ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

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

Interest Rate Risk

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. As of March 31, 2015, our Senior Secured Credit Facility provides for variable rate borrowings of up to $2,452.6 million including $455.1 million under our revolving credit facility, net of $9.9 million of letters of credit. A one-eighth percent change in assumed interest rates for the Senior Secured Credit Facility, if fully drawn, as of March 31, 2015 would have an impact of approximately $0.9 million on interest expense with the 1.00% LIBOR floor in effect on our Term B-3 Loan. Should LIBOR exceed 1.00%, a one-eighth percent change in assumed interest rates for the Senior Secured Credit Facility, if fully drawn, as of March 31, 2015 would have an impact of approximately $3.1 million on interest expense. As of March 31, 2015, we had no outstanding borrowings against the revolving credit 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 March 31, 2015:

	Counterparty	Effective   Date		Notional Amount   (in millions)		LIBOR   Fixed Rate
Interest Rate Swap L	Barclays		Aug 2016-Aug 2019	$	75.0		3.44	%*
Interest Rate Swap M	JP Morgan		Aug 2016-Aug 2019	$	100.0		3.43	%*
Interest Rate Swap N	Bank of America		Aug 2016-Aug 2019	$	75.0		3.37	%*
Interest Rate Swap O	Deutsche Bank		Aug 2016-Aug 2019	$	75.0		3.19	%*
Interest Rate Swap P	Barclays		Aug 2016-Aug 2019	$	75.0		3.08	%*
Interest Rate Swap Q	Barclays		Aug 2016-Aug 2019	$	50.0		2.99	%*
Interest Rate Swap R	Deutsche Bank		Aug 2016-Aug 2019	$	50.0		2.98	%*
Interest Rate Swap S	Deutsche Bank		Aug 2016-Aug 2019	$	50.0		2.73	%*
Interest Rate Swap T	Bank of America		Aug 2016-Aug 2019	$	75.0		2.74	%*
Interest Rate Swap U	Fifth Third Bank		Aug 2016-Aug 2019	$	50.0		2.66	%*
Interest Rate Swap V	Fifth Third Bank		Aug 2016-Aug 2019	$	50.0		2.60	%*
Interest Rate Swap W	Fifth Third Bank		Aug 2016-Aug 2019	$	25.0		2.40	%*
Interest Rate Swap X	Huntington Bank		Aug 2016-Aug 2019	$	50.0		2.25	%*

* includes LIBOR floor of 1.00%

We are exposed to increased interest expense if a counterparty defaults. Refer to NOTE F and NOTE G of the notes to our condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Exchange Rate Risk

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. As of March 31, 2015, we hold hedging contracts in the Japanese Yen, which are intended to hedge either known or forecasted cash flow payments denominated in the currency. We do not hold financial instruments for trading or speculative purposes.

Assuming current levels of foreign currency transactions, a 10% aggregate increase or decrease in the Japanese Yen, Euro, Indian Rupee, Chinese Yuan Renminbi and Canadian Dollar would correspondingly change our earnings by an estimated $5 million per year. This includes the partial offset of our hedging contracts described above. All other exposure to foreign currencies is considered immaterial.

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Commodity Price Risk

We are subject to changes in our cost of sales caused by movements in underlying commodity prices. Approximately two-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 financial forward contracts that are intended to hedge forecasted aluminum purchases. Based on our forecasted demand for 2015 and 2016, as of March 31, 2015, the hedge contracts cover approximately 34% and 18% 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 by approximately $1 million and $4 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 only hedge for 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.

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ITEM 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

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 Rules 13a-15(e) and 15d-15(e) under 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 Form 10-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.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and15d-15(f) under the Exchange Act) during the period covered by this Quarterly Report on Form 10-Q that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

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, safety, health, taxes, environmental and other matters. See NOTE O in the notes to the condensed consolidated financial statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Item 1A. Risk Factors

There have been no material changes from our risk factors as previously reported in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2014 as filed with the Securities and Exchange Commission on February 20, 2015.

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

The following table sets forth information related to our repurchases of our common stock on a monthly basis in the three month ended March 31, 2015:

	Total Number of Shares Purchased(1)		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(2)		Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans(2)
January 2015		36,533	$	31.36		21,750	$	499,317,986
February 2015		387,050		31.94		387,050		486,956,843
March 2015		817,538		3 1.65		817,538		461,082,746
Total		1,241,121		31.73		1,226,338

⁽¹⁾  Shares purchased includes 14,783 shares withheld to cover taxes due upon the vesting of restricted stock in January 2015.

⁽²⁾  These values reflect repurchases made under the stock repurchase program approved by our Board of Directors on October 30, 2014 authorizing $500 million of repurchases through December 31, 2016.

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Item 6. Exhibits

(a) Exhibits

Exhibit Number	Description
4.4	First Supplemental Indenture, dated as of March 31, 2015, between Allison Transmission, Inc. and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K filed April 7, 2015)
10.37*	Second Amended and Restated Non-Employee Directors Compensation Policy (filed herewith)
10.38*	Amended and Restated Non-Employee Directors Deferred Compensation Plan of Allison Transmission Holdings, Inc. (filed herewith)
10.39	Amendment No. 11 to the Credit Agreement, dated as of April 7, 2015, 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, Citicorp North America, Inc., as Administrative Agent and the other agents and arrangers parties thereto (incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K filed April 7, 2015)
31.1	Certification of Chief Executive Officer pursuant to Rule 13a-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 Rule 13a-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

* Indicates a management contract or compensatory plan or arrangement.

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SIGNATURES

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.

	ALLISON TRANSMISSION HOLDINGS, INC.
Date: April 28 , 2015	By:	/s/ Lawrence E. Dewey
		Name:	Lawrence E. Dewey
		Title:	Chairman, President and Chief Executive Officer
Date: April 28, 2015	By:	/s/ David S. Graziosi
		Name:	David S. Graziosi
		Title:	Executive Vice President, Chief Financial Officer and Treasurer (Principal Accounting Officer)

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