10-Q

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 June 30, 2015

OR

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

For the transition period from to

Commission File Number 001-12515

_______________

OM GROUP, INC.

(Exact name of Registrant as specified in its charter)

_______________

Delaware  (State or other jurisdiction of incorporation or organization)	52-1736882  (I.R.S. Employer Identification No.)
950 Main Avenue, Suite 1300, Cleveland, Ohio  (Address of principal executive offices)	44113-7210  (Zip Code)

216-781-0083

Registrant’s telephone number, including area code

_______________

(Former name, former address and former fiscal year, if changed since last report)

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 the 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 o
Non-accelerated filer o (Do not check if a smaller reporting company)	Smaller reporting company o

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 August 4, 2015, the registrant had 30,600,771 shares of Common Stock, par value $.01 per share, outstanding.

OM Group, Inc.

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION
Item 1.	Unaudited Financial Statements	2
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	28
Item 4.	Controls and Procedures	28
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	28
Item 1A.	Risk Factors	28
Item 6.	Exhibits	29
	Signatures	30

1

PART I - FINANCIAL INFORMATION

Item 1. Unaudited Financial Statements

OM Group, Inc. and Subsidiaries

Unaudited Condensed Consolidated Balance Sheets

	June 30, 2015			December 31, 2014
(In millions, except share and per share data)
ASSETS
Current assets
Cash and cash equivalents	$	35.8		$	91.7
Accounts receivable, less allowance of $2.4 in 2015 and $2.5 in 2014	133.6			134.5
Inventories	218.8			228.4
Other current assets	38.7			21.5
Total current assets	426.9			476.1
Property, plant and equipment, net	281.7			308.3
Goodwill	248.1			252.6
Intangible assets, net	299.7			324.8
Other non-current assets	43.5			57.7
Total assets	$	1,299.9		$	1,419.5
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Revolving credit facility	$	2.4		$	12.5
Accounts payable	55.0			74.7
Accrued employee costs	39.9			34.9
Purchase price of VAC payable to seller	4.1			46.2
Other current liabilities	55.0			57.4
Total current liabilities	156.4			225.7
Deferred income taxes	67.5			74.8
Pension liabilities	229.4			244.4
Other non-current liabilities	30.0			37.7
Stockholders’ equity:
Preferred stock, $.01 par value:
Authorized 2,000,000 shares, no shares issued or outstanding	—			—
Common stock, $.01 par value:
Authorized 90,000,000 shares; 32,742,185 shares issued in 2015 and 32,408,222 shares issued in 2014	0.3			0.3
Capital in excess of par value	660.3			647.3
Retained earnings	400.1			405.3
Treasury stock (2,151,866 shares in 2015 and 2,136,116 shares in 2014, at cost)	(58.7		)	(58.2		)
Accumulated other comprehensive loss	(185.4		)	(157.8		)
Total stockholders' equity	816.6			836.9
Total liabilities and and stockholders' equity	$	1,299.9		$	1,419.5

See accompanying notes to unaudited condensed consolidated financial statements.

2

OM Group, Inc. and Subsidiaries

Unaudited Condensed Consolidated Statements of Operations

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
(In millions, except per share data)
Net sales	$	228.4		$	297.5		$	476.2		$	559.2
Cost of goods sold	174.6			234.4			372.1			434.2
Gross profit	53.8			63.1			104.1			125.0
Selling, general and administrative expenses	54.5			53.2			109.4			106.6
Operating profit (loss)	(0.7		)	9.9			(5.3		)	18.4
Other income (expense):
Interest expense	(0.6		)	(0.6		)	(1.2		)	(1.3		)
Foreign exchange gain (loss)	0.3			(0.9		)	(4.1		)	(1.2		)
Gain (loss) on divestiture of Advanced Materials business	—			(0.8		)	2.0			(1.0		)
Charges associated with VAC arbitration conclusion	—			—			(10.4		)	—
Other income (expense), net	(5.8		)	(0.7		)	(2.9		)	(1.4		)
Income (loss) from continuing operations before income tax	(6.8		)	6.9			(21.9		)	13.5
Income tax (benefit) expense	(15.2		)	1.8			(19.1		)	3.1
Income (loss) from continuing operations, net of tax	8.4			5.1			(2.8		)	10.4
Loss from discontinued operations, net of tax	(0.1		)	(0.3		)	—			(0.3		)
Consolidated net income (loss)	$	8.3		$	4.8		$	(2.8	)	$	10.1
Earnings (loss) per common share — basic:
Income (loss) from continuing operations	$	0.28		$	0.16		$	(0.09	)	$	0.33
Income (loss) from discontinued operations	—			(0.01		)	—			(0.01		)
Net income (loss)	$	0.28		$	0.15		$	(0.09	)	$	0.32
Earnings (loss) per common share — assuming dilution:
Income (loss) from continuing operations	$	0.27		$	0.16		$	(0.09	)	$	0.33
Income (loss) from discontinued operations	—			(0.01		)	—			(0.02		)
Net income (loss)	$	0.27		$	0.15		$	(0.09	)	$	0.31
Weighted average shares outstanding
Basic	30.4			31.5			30.4			31.5
Assuming dilution	30.7			31.8			30.4			31.9
Dividends declared per common share	$	—		$	0.0750		$	0.0825		$	0.1500

See accompanying notes to unaudited condensed consolidated financial statements.

3

OM Group, Inc. and Subsidiaries

Unaudited Statements of Consolidated Comprehensive Income (Loss)

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
(In millions)
Consolidated net income (loss)	$	8.3		$	4.8		$	(2.8	)	$	10.1
Foreign currency translation adjustments	19.2			(1.3		)	(25.3		)	(3.2		)
Reclassification of foreign currency translation adjustment related to the sale of property into earnings	—			—			(3.5		)	—
Reclassification of hedging activities into earnings, net of tax	—			0.1			—			0.2
Unrealized loss on cash flow hedging derivatives, net of tax	(0.2		)	—			(0.4		)	—
Pension adjustment, net of tax	0.8			0.1			1.6			0.2
Net change in accumulated other comprehensive loss	19.8			(1.1		)	(27.6		)	(2.8		)
Comprehensive income (loss)	$	28.1		$	3.7		$	(30.4	)	$	7.3

See accompanying notes to unaudited condensed consolidated financial statements.

4

OM Group, Inc. and Subsidiaries

Unaudited Condensed Consolidated Statements of Cash Flows

	Six Months Ended June 30,
	2015			2014
(In millions)
Operating activities
Consolidated net income (loss)	$	(2.8	)	$	10.1
Adjustments to reconcile consolidated net income (loss) to net cash used for operating activities:
Loss from discontinued operations	—			0.3
Depreciation and amortization	29.7			36.4
Amortization of deferred financing fees	0.6			0.5
Share-based compensation expense	5.9			4.4
Foreign exchange loss	4.1			1.2
(Gain) loss on divestiture of Advanced Materials business	(2.0		)	1.0
Deferred income tax benefit	(3.0		)	(1.8		)
Other non-cash items	(6.1		)	3.0
Changes in operating assets and liabilities:
Accounts receivable	(5.4		)	(20.3		)
Inventories	(3.0		)	(4.5		)
Accounts payable	(16.5		)	(6.1		)
Other, net	(0.8		)	(2.4		)
Net cash provided by operating activities	0.7			21.8
Investing activities
Expenditures for property, plant and equipment	(10.6		)	(10.8		)
Cash received from acquisition purchase price adjustments	2.2			—
Proceeds from sale of property	1.2			1.0
Net cash used for investing activities	(7.2		)	(9.8		)
Financing activities
Payments related to VAC purchase price payable	(41.8		)	—
Net payments on revolving credit facility	(10.1		)	—
Dividends paid	(2.5		)	(4.8		)
Proceeds from exercise of stock options	7.8			0.5
Debt issuance costs	(0.1		)	(0.1		)
Payment related to surrendered shares	(0.5		)	(0.7		)
Share repurchases	—			(10.0		)
Net cash used for financing activities	(47.2		)	(15.1		)
Effect of exchange rate changes on cash	(2.1		)	(0.2		)
Cash and cash equivalents
Decrease from continuing operations	(55.8		)	(3.3		)
Discontinued operations - net cash used by operating activities	(0.1		)	(0.8		)
Balance at the beginning of the period	91.7			118.4
Balance at the end of the period	$	35.8		$	114.3

See accompanying notes to unaudited condensed consolidated financial statements.

5

Notes to Unaudited Consolidated Financial Statements

OM Group, Inc. and Subsidiaries

(In millions, except as noted and share and per share amounts)

Note 1 — Basis of Presentation

Principles of Consolidation — OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovative technologies to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value. The consolidated financial statements include the accounts of OM Group and its consolidated subsidiaries. We were formed in 1991 as a Delaware corporation. Intercompany accounts and transactions have been eliminated in consolidation.

Certain financial data may have been rounded. As a result of such rounding, the totals of data presented in this document may vary slightly from the actual arithmetical totals of such data.

On November 24, 2014, we completed the acquisition of Ener-Tek International, Inc., which operates under the brand name Yardney Technical Products ("Yardney"), and now operates as a part of our Battery Technologies business. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances. During the six months ended June 30, 2015, a post-closing working capital adjustment and an arbitration settlement with a former real property lessor resulted in a $2.2 million purchase price reduction, resulting in a purchase price of $22.4 million.

These Unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of our financial position at June 30, 2015 and the results of our income (loss), comprehensive income (loss) and cash flows for the six months ended June 30, 2015 and 2014 have been included. The balance sheet at December 31, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information or notes required by U.S. generally accepted accounting principles for complete financial statements. Past operating results are not necessarily indicative of the results which may occur in future periods, and the interim period results are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Pending Transaction

On May 31, 2015, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with funds managed by Apollo Global Management, LLC (“Apollo Funds”) and Platform Specialty Products Corporation (“Platform”). Under the Merger Agreement, the Company will merge with an affiliate of Apollo Funds (the “Merger”). Immediately following the Merger, Apollo Funds will sell the Company’s electronic chemicals and photomasks businesses to Platform (the “Carve-out Transaction”). As a result of the Merger, each share of the Company’s common stock issued and outstanding immediately prior to the time of the Merger will be converted into the right to receive $34.00 per share in cash without interest (the “Merger Consideration”). The transactions are expected to be completed by the end of 2015.

At the time of the Merger, each outstanding option to purchase shares of the Company’s common stock and each restricted share award will be deemed vested (at target level in the case of performance awards) and converted into the right to receive the Merger Consideration (less the exercise price in the case of options).

The Merger Agreement contains certain termination rights by the Company, Apollo Funds and Platform. These rights include the Company's acceptance of a superior proposal from an "excluded party," which is defined as any entity from

6

whom the Company has received a takeover proposal prior to or within 35 days after the signing of the Merger Agreement, at which time the Company would be required to pay a termination fee of $18.3 million. In the event the Merger Agreement is terminated for other reasons by the Company, including acceptance of a takeover proposal submitted by a non-excluded party, it may be required to pay a termination fee of $36.6 million. If the Merger Agreement is terminated due to the failure of Apollo Funds or Platform to obtain debt financing, Apollo Funds and/or Platform, as applicable, will be required to pay the Company a reverse termination fee equal to $62.7 million. If the Merger Agreement is terminated due to the failure to obtain certain regulatory approvals related to the Carve-out Transaction, Platform may be required to reimburse the Company and Apollo Funds for their respective fees and expenses in an aggregate amount up to $11.3 million.

Consummation of the Merger is conditional upon customary closing conditions, including, among others, (1) adoption of the Merger Agreement by the stockholders of the Company at a meeting currently scheduled for August 10, 2015, and (2) expiration or termination of any applicable waiting periods under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 ("HSR Act") and other consents and approvals required under non-US applicable antitrust laws. On June 19, 2015 and on June 26, 2015, the FTC granted early termination of the waiting period under the HSR Act with respect to the Merger and the Carve-out Transaction, respectively. Several approvals from non-US regulatory parties are still outstanding. The Company has agreed to various covenants in the Merger Agreement, including, among other things, forgoing payment of its regular dividend during the period between execution of the Merger Agreement and the closing of the Merger.

During the three and six months ended June 30, 2015, we incurred $6.4 million and $7.8 million, respectively, of expenses related to the Merger, which are included within Selling, general and administrative expenses in the Statement of Consolidated Operations.

For additional information about the Merger, please see our current reports on Form 8-K, filed with the SEC on June 1, 2015, and the Merger Agreement itself, which is attached as Exhibit 2.1 thereto, as well as the definitive proxy statement filed with the SEC on July 10, 2015 and our other current reports on Form 8-K filed with the SEC related to the Merger.

Note 2 — Recently Issued Accounting Guidance

In April 2015, the Financial Accounting Standards Board (the "FASB") issued ASU No. 2015-03, “Interest - Imputation of Interest” (“ASU 2015-03”). The update amends the guidance for presenting deferred debt costs on the balance sheet and requires that the costs are recorded as a deduction from the carrying amount of debt. The amendments are effective for reporting periods beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact the adoption of ASU 2015-03 and believe the impact will not be material to our financial position.

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The update amends the guidance for revenue recognition to replace numerous, industry-specific requirements and converges areas under this topic with those of the International Financial Reporting Standards. On July 9, 2015 the FASB formally deferred the effective date one year, to reporting periods beginning after December 15, 2017. Early adoption is now allowed, but only after the original effective date of reporting periods beginning after December 15, 2016. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact the adoption of ASU 2014-09 may have on our results of operations or financial position.

Note 3 — Inventories

Inventories consist of the following:

	June 30,		December 31,
	2015		2014
Raw materials and supplies	$	69.0	$	73.6
Work-in-process	115.3		118.1
Finished goods	34.5		36.7
	$	218.8	$	228.4

7

Note 4 — Acquisitions and Divestitures

(a) Acquisitions

Yardney

On November 24, 2014. we completed the acquisition of Yardney. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances at the time of the acquisition. The balance sheet at the acquisition date was based on preliminary estimated purchase accounting. In the second quarter ended June 30, 2015, we finalized this accounting. During the six months ended June 30, 2015 we agreed the closing working capital with the seller and finalized an arbitration settlement with a former real property lessor which resulted in post-closing purchase price reductions of $2.2 million. The purchase price of $22.4 million, resulted in an allocation of $12.0 million of net assets, including $6.5 million of identifiable intangibles. The remaining $10.4 million was recorded as goodwill, which is not deductible for tax purposes.

VAC

Our Magnetic Technologies segment consists of VAC Holding GmbH ("VAC"), which we acquired in 2011. The total purchase price of $812.2 million included cash consideration of $686.2 million, withheld consideration of $86.3 million, and the issuance of Company shares valued at $39.7 million. The withheld consideration relates to potential indemnification claims made by OM Group and accepted by the seller, if any, within two years of the closing date of the acquisition with certain exceptions related to tax matters. In August 2013, we remitted a payment of $23.0 million to the seller of VAC and entered into arbitration with the seller to determine the outcome of the remaining withheld consideration. In December 2014, we withdrew one claim related to certain potential tax obligations and remitted a payment of $16.2 million to the seller of VAC and charged certain tax assessments related to pre-acquisition tax years of $1.6 million against the outstanding withholding liability. In March 2015, the arbitration decision was issued addressing the remaining declaratory actions we had undertaken in support of our indemnification claims and we remitted a payment of $52.5 million to the seller of VAC. The payment consisted of the remaining non-tax related withholding liability of $41.8 million and $10.7 million in charges associated with the arbitration conclusion, which included interest charges and legal fee reimbursement. The remainder of the purchase price of VAC payable to the seller of $4.1 million is tax related and will be resolved when all open tax examinations are completed by the tax authorities in the various jurisdictions, which we expect to occur in 2015. Due to the length of time over which these withholding liability payments are being made, these payments are classified as financing activities within the Unaudited Condensed Consolidated Statement of Cash Flows.

(b) Divestitures

Advanced Materials

On March 29, 2013, we completed the divestiture of our cobalt-based business. The transaction comprised the sale of the downstream portion of the business (including our cobalt refinery assets in Kokkola, Finland), and the transfer of our equity interests in the DRC-based joint venture, known as GTL. The sale agreement for the downstream portion of the business provides for potential future additional cash consideration of up to $110.0 million based on the business achieving certain revenue targets over a period of three years. Using our projected trends of cobalt prices and volumes, it is not probable that the business will meet the revenue targets, and no value was assigned to the potential future cash consideration while calculating the loss on the divestiture at December 31, 2014 and June 30, 2015.

Following the sale, to assist in the transition of the downstream business, we entered into an agreement with the buyer to act as intermediary in a cobalt feed supply agreement between GTL and the buyer, in back-to-back arrangements for a period of two years. The supply agreement terminated as of March 31, 2015 and all related activity under the agreement was completed in the second quarter of 2015, including the payment of a $1.0 million performance bonus to us.

8

Note 5 — Debt

On September 4, 2013, we entered into a five-year Senior Secured Revolving Credit Facility (the "Facility”), and terminated our previous credit facility dated August 2, 2011 that was scheduled to expire in August 2016. The Facility provides for $350 million of revolving borrowing capacity and includes an expansion option of up to an additional $150 million, subject to certain conditions. The borrowers under the Facility are the Company, Harko C.V. (“Harko”), a limited partnership organized under the laws of the Netherlands, and VAC Germany GmbH (“VAC”), a limited liability company under the laws of Germany. Harko and VAC are wholly-owned subsidiaries of the Company. The Facility matures on September 4, 2018.

The obligations of the Company under the Facility are guaranteed by certain of the Company’s material U.S. subsidiaries. The obligations of Harko and VAC under the Facility are guaranteed by the Company and certain of the Company’s material subsidiaries, subject to certain exceptions including financial assistance limitations in certain foreign jurisdictions. In addition, the obligations of the Company under the Facility are secured by a first priority security interest in substantially all of the existing and future personal property of the Company and certain of the Company’s material U.S. subsidiaries, including 65% of the voting capital stock of certain of the Company’s direct foreign subsidiaries. The obligations of Harko and VAC under the Facility are secured by a first priority security interest in certain of the existing and future personal property of Harko, VAC and certain of the Company’s subsidiaries and a 100% pledge of the voting capital stock of certain of the Company’s subsidiaries, subject to certain exceptions, including financial assistance limitations in certain foreign jurisdictions.

The interest rates applicable to loans under the Facility will be at our option and equal to either a base rate or a LIBOR rate, in each case plus an applicable margin percentage. The base rate will be the highest of (i) the federal funds rate plus 0.50%, (ii) the prime rate or (iii) the LIBOR rate with a maturity of one month plus 1.00%. The applicable margin percentage is based on the leverage ratio of the Company. The range of the applicable margin percentage is 1.125% to 2.000% in the case of LIBOR advances and 0.125% to 1.000% in the case of base rate advances.

The Facility contains customary representations and warranties and certain covenants that limit the ability of the Company and its restricted subsidiaries to, among other things: (i) incur or guarantee additional indebtedness; (ii) redeem, repurchase or pay distributions on capital stock or redeem or repurchase subordinated debt; (iii) make investments; (iv) sell assets; (v) enter into agreements that restrict distributions or other payments from restricted subsidiaries to the Company; (vi) incur or suffer to exist liens securing indebtedness; (vii) consolidate, merge or transfer all or substantially all of their assets; and (viii) engage in transactions with affiliates. In addition, the Facility contains financial covenants that limit capital expenditures in any fiscal year and that measure (i) the ratio of the Company’s total funded indebtedness net of certain cash to the amount of the Company’s consolidated EBITDA and (ii) the ratio of the amount of the Company’s consolidated EBITDA to the Company’s cash interest expense, as defined in the agreement governing the Facility.

As of June 30, 2015, we had $2.4 million outstanding under the Facility and were in compliance with all Facility covenants.

Note 6 — Derivative Instruments

Commodity Price Risk

In March 2015, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2015 and 2016 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts have beendesignated as cash flow hedges for accounting purposes and the liability had a fair value of$0.5 millionatJune 30, 2015.

In May 2013, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2013 and 2014 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts weredesignated as cash flow hedges for accounting purposes and were settled during the second quarter 2014.

There wasnohedge ineffectiveness in the six months endedJune 30, 2015 or 2014 for these hedges.

9

Note 7 — Fair Value Disclosures

The following table shows our assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	June 30, 2015		(Level 1)		(Level 2)		(Level 3)
Liabilities:
Contingent consideration payable	$	1.4	$	—	$	—	$	1.4
Commodity contract derivatives	0.5		—		0.5		—
	$	1.9	$	—	$	0.5	$	1.4

Our valuation techniques and Level 3 inputs used to estimate the fair value of the contingent consideration payable in connection with our acquisition of Rahu Catalytics Limited ("Rahu") are described below. There were no transfers into or out of Levels 1, 2 or 3 in 2014 or 2015.

The following table summarizes changes in Level 3 liabilities measured at fair value on a recurring basis:

	Contingent Consideration
Fair Value at December 31, 2014	$	1.4
Accretion expense	0.1
Foreign exchange	(0.1		)
Fair Value at June 30, 2015	$	1.4

We acquired Rahu on December 22, 2011. The purchase price included contingent consideration of up to an additional €20.0 million ($22.4 million at June 30, 2015) based on achieving certain volume targets over a fifteen-year period ending on December 31, 2026. We estimated the fair value of the contingent consideration using probability-weighted expected future cash flows and applied a discount rate that appropriately captures a market participant's view of the risk associated with the contingent consideration. Contingent consideration is included in Other non-current liabilities in the Unaudited Condensed Consolidated Balance Sheet. The valuation of the contingent consideration is classified utilizing Level 3 inputs consistent with assumptions which would be made by other market participants. There are many factors that could impact the likelihood that we will pay the contingent consideration and therefore its value, including overall economic conditions and our ability to drive sales volumes as planned. A change in a market participant view of risks could also impact the value of the contingent consideration.

We also hold financial instruments consisting of cash, accounts receivable, and accounts payable. The carrying amounts of cash, accounts receivable, and accounts payable approximate fair value due to the short-term maturities of these instruments. The Facility had a carrying value of $2.4 million and $12.5 million at June 30, 2015 and December 31, 2014, respectively, and is the approximate fair value due to the the short-term nature of the instrument. Derivative instruments are recorded at fair value and immaterial as of June 30, 2015.

Note 8 — Income Taxes

We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Our major tax jurisdictions include the U.S. and Germany. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2006. VAC's German tax returns have been audited through 2005. We are indemnified, subject to certain limitations, for any pre-acquisition income tax liabilities of VAC. German tax authorities are currently examining VAC's income tax returns for the years 2006-2011.

As required under ASC 740, our interim income tax provision is based on the application of an estimated annual effective income tax rate applied to year-to-date ordinary income from continuing operations before income tax expense. In determining the estimated annual effective income tax rate, we analyze various factors, including forecasts of projected annual earnings (including specific subsidiaries projected to have pretax income and pretax losses), taxing jurisdictions in which the earnings will be generated, our ability to use tax credits and net operating loss carryforwards, and available tax planning alternatives. We evaluate the estimated annual effective income tax rate on a quarterly

10

basis based on current and forecasted earnings by tax jurisdiction, including changes in the Company's structure. The estimated annual effective income tax rate may be significantly impacted by changes to the mix of forecasted earnings by tax jurisdiction. The tax effects of adjustments to the estimated annual effective income tax rate are recorded in the period such estimates are revised. The tax effects of discrete items, including the effect of changes in tax laws, tax rates, certain circumstances with respect to valuation allowances or other unusual or non-recurring items, are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than included in the estimated annual effective income tax rate. The Company recorded a decrease in uncertain tax positions for the three and six months ended June 30, 2015 of $5.0 million as a result of an effective settlement at VAC, which is included as an income tax benefit for the period. A corresponding write-off of a $5.0 million long-term indemnification receivable was recorded in Other income (expense), net for the three and six months ended June 30, 2015, resulting in no impact on net income or earnings per share.

Income (loss) from continuing operations before income tax consists of the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
United States	$	(7.0	)	$	0.6		$	(15.9	)	$	(2.3	)
Outside the United States	0.2			6.3			(6.0		)	15.8
Income (loss) from continuing operations before income tax	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Effective Income Tax Rate	(a)			25.8		%	(a)			23.3		%
(a) not meaningful

The effective income tax rates for the three months and six months ended June 30, 2015 were impacted by special charges that have no tax benefits, including expenses related to the Merger described in Note 1 and the write-off of the tax indemnification receivable at VAC discussed above, as well as certain tax discrete items, including the decrease of uncertain tax positions discussed above. Prior year income tax rate for the three and six months ended June 30, 2014 are lower than the U.S. statutory tax rate primarily due to income earned in tax jurisdictions with lower statutory rates than the U.S. (primarily Germany, Malaysia and Taiwan) and our financing structure, partially offset by losses in certain jurisdictions (including the U.S.) with no corresponding tax benefit.

Note 9 — Defined Benefit Plans

At June 30, 2015 and December 31, 2014, we had pension liabilities of $237.2 million and $253.1 million, respectively, the majority of which were assumed in the 2011 VAC acquisition and the 2010 EaglePicher Technologies acquisition.

Set forth below is a detail of the net periodic pension expense for the U.S. defined benefit plans:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	0.3		$	0.3		$	0.6		$	0.6
Interest cost	1.9			2.3			3.7			4.7
Amortization of unrecognized net loss	(0.2		)	0.1			0.2			0.2
Expected return on plan assets	(2.3		)	(2.6		)	(4.5		)	(5.1		)
Total expense	$	(0.3	)	$	0.1		$	—		$	0.4

Set forth below is a detail of the net periodic pension expense for the VAC defined benefit plans:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Service cost	$	1.4	$	1.7	$	2.9	$	3.4
Interest cost	0.8		1.5		1.6		3.1
Amortization of unrecognized net loss	0.6		0.3		1.2		0.5
Total expense	$	2.8	$	3.5	$	5.7	$	7.0

11

Note 10 — Accumulated Other Comprehensive Loss

(a) Changes in Accumulated Other Comprehensive Loss by Component

	Foreign Currency Translation			Unrealized Loss on Cash Flow Hedging Derivatives, net of tax			Pension and Post-Retirement Obligation, net of tax		Accumulated Other Comprehensive Loss
Beginning Balance at January 1, 2015	$	(87.2	)	—			(70.6	)	(157.8		)
Other comprehensive loss before reclassifications	(25.3		)	(0.4		)	—		(25.7		)
Amounts reclassified from accumulated other comprehensive loss	(3.5		)	—			1.6		(1.9		)
Net current-period other comprehensive income (loss)	(28.8		)	(0.4		)	1.6		(27.6		)
Ending balance at June 30, 2015	$	(116.0	)	$	(0.4	)	(69.0	)	$	(185.4	)

(b) Reclassifications out of Accumulated Other Comprehensive Loss

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss			Affected Line Item in the Statement Where Net Income is Presented
Foreign currency translation	$	(3.5	)	Other income (expense), net
Pension and post-retirement obligation	$	1.6		Selling, general and administrative expenses

12

Note 11 — Earnings (Loss) Per Share

The following table sets forth the computation of basic and dilutive income (loss) per common share from continuing operations attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Income (loss) from continuing operations, net of tax	$	8.4	$	5.1	$	(2.8	)	$	10.4
Earnings (loss) per common share - basic:
Income (loss) from continuing operations	$	0.28	$	0.16	$	(0.09	)	$	0.33
Earnings (loss) per common share - assuming dilution:
Income (loss) from continuing operations	$	0.27	$	0.16	$	(0.09	)	$	0.33
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

The following table sets forth the computation of basic and diluted net income (loss) per common share attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Net income (loss)	$	8.3	$	4.8	$	(2.8	)	$	10.1
Earnings (loss) per common share - basic:
Net income (loss)	$	0.28	$	0.15	$	(0.09	)	$	0.32
Earnings per common share - assuming dilution:
Net income (loss)	$	0.27	$	0.15	$	(0.09	)	$	0.31
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

We use the treasury stock method to calculate the effect of outstanding share-based compensation awards, which requires us to compute total employee proceeds as the sum of (a) the amount the employee must pay upon exercise of the award, (b) the amount of unearned share-based compensation costs attributed to future services and (c) the amount of tax benefits, if any, that would be credited to additional paid-in capital assuming exercise of the award. Shares, under share-based compensation awards, for which the total employee proceeds exceed the average market price over the applicable period have an anti-dilutive effect on earnings per share, and accordingly, are excluded from the calculation of diluted earnings per share.

In each of the three and six months ended June 30, 2015 and 2014, stock options to purchase 0.1 million shares were excluded from the calculation of dilutive earnings per share because the options’ exercise prices were greater than the average market price of the common shares and, therefore, the effect would have been anti-dilutive.

13

Note 12 — Share-Based Compensation

Set forth below is a summary of share-based compensation expense for option grants, restricted stock awards and restricted stock unit awards included as a component of Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Stock options and restricted stock awards	$	2.3	$	1.7	$	5.3	$	3.9
Restricted stock unit awards	0.2		—		0.3		0.2
Share-based compensation expense - employees	$	2.5	$	1.7	$	5.6	$	4.1
Share-based compensation expense - non-employee directors	$	0.1	$	0.1	$	0.3	$	0.3

No tax benefit for share-based compensation was realized during the first three and six months ended June 30, 2015 and 2014 as a result of a valuation allowance against the deferred tax assets.

At June 30, 2015, there was $10.4 million of unrecognized compensation expense related to unvested share-based awards. That cost is expected to be recognized as follows: $3.5 million in the remaining six months of 2015, $4.3 million in 2016, and $2.6 million in 2017 as a component of Selling, general and administrative expenses. Unearned compensation expense is recognized over the vesting period for the particular grant. Total unrecognized compensation cost will be adjusted for future changes in actual and estimated forfeitures, updated vesting assumptions for performance awards, and fluctuations in the fair value of restricted stock unit awards.

Non-employee directors of the Company are paid a portion of their annual retainer in unrestricted shares of common stock. For purposes of determining the number of shares of common stock to be issued subsequent to May 13, 2014, the 2014 Equity and Incentive Compensation Plan (the "2014 Plan") provides that shares are to be valued at the closing sale price of the Company’s common stock on the New York Stock Exchange ("NYSE") on the last trading date of the quarter. Pursuant to the 2014 Plan, we issued 3,744 and 8,147 shares in the three and six months ended June 30, 2015. For purposes of determining the number of shares of common stock to be issued prior to May 13, 2014, the 2007 Incentive Compensation Plan (the "2007 Plan") provides that shares are to be valued at the average of the high and low sale price of the Company’s common stock on the NYSE on the last trading date of the quarter. Pursuant to the 2007 Plan, we issued 3,976 and 7,084 shares in the three and six months ended June 30, 2014 to non-employee directors.

Note 13 — Commitments and Contingencies

Following the announcement of the Merger and Carve-Out Transaction described in Note 1, six putative class action lawsuits were filed in the Court of Chancery of the State of Delaware.  The actions subsequently were consolidated, and the case is proceeding as In re OM Group, Inc. Stockholders Litigation, C.A. No. 11216-VCN.  The operative complaint, originally filed in one of the constituent actions (City of Sarasota Firefighters’ Pension Fund v. Apollo Global Management, LLC, et al., C.A. No. 11249) generally alleges, among other things, that the directors of the Company breached their fiduciary duties to OM Group stockholders by engaging in a flawed sales process, agreeing to a price that does not adequately compensate OM Group stockholders, agreeing to certain unfair deal protection terms and failing to disclose certain information to investors.  Following expedited discovery, plaintiffs determined not to move for a preliminary injunction.  We believe that the allegations lack merit and we intend to defend the lawsuit vigorously.

In July 2015, we substantially completed negotiations with the employee works council and union in Germany with respect to competitive repositioning and cost optimization in our Magnetic Technologies business. At this time, implementation plans have not been completed, and as such, potential costs cannot be determined.

We have potential contingent liabilities with respect to environmental matters related to our former operations in Brazil which were sold in 2003. Environmental cost-sharing arrangements are in place between the original owner and operator of these operations and between the Company and the subsequent purchaser of these operations. We have reviewed the limited information made available to us on the environmental conditions and are awaiting more detailed

14

information from the purchaser. We cannot currently evaluate whether or not, or to what extent, we will be responsible for any remediation costs until more detailed information is received and validated.

From time to time, we are subject to various legal and regulatory proceedings, claims and assessments that arise in the normal course of business. The ultimate resolution of such proceedings, claims and assessments is inherently unpredictable and, as a result, our estimates of liability, if any, are subject to change and actual results may materially differ from such estimates. Our estimate of any costs to be incurred as a result of these proceedings, claims and assessments are accrued when the liability is considered probable and the amount can be reasonably estimated. We believe the amount of any current potential liability with respect to legal and regulatory proceedings, claims and assessments will not have a material adverse effect upon our financial condition, results of operations, or cash flows.

Note 14 — Reportable Segments

We determine our segments based on how the chief operating decision maker makes decisions about allocating resources to segments and measuring their performance. We operate and report our results in four operating segments: Magnetic Technologies, Battery Technologies, Specialty Chemicals and Advanced Materials. Intersegment transactions are immaterial and generally recognized based on current market prices and are eliminated in consolidation. Corporate is comprised of general and administrative expenses not allocated to the operating segments.

The following table reflects the results of our reportable segments:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net sales
Magnetic Technologies	$	109.9		$	130.9		$	214.2		$	260.1
Battery Technologies	42.7			41.0			82.4			81.5
Specialty Chemicals	74.2			81.9			149.3			158.8
Advanced Materials	1.6			43.7			30.3			58.8
	$	228.4		$	297.5		$	476.2		$	559.2
Operating profit (loss)
Magnetic Technologies (a)	$	0.5		$	3.2		$	(0.1	)	$	8.9
Battery Technologies (b) (c)	5.2			8.1			8.2			14.5
Specialty Chemicals (a) (d)	7.8			8.5			14.1			15.9
Advanced Materials	0.5			(2.5		)	(0.3		)	(3.5		)
Corporate (a) (e)	(14.7		)	(7.4		)	(27.2		)	(17.4		)
	$	(0.7	)	$	9.9		$	(5.3	)	$	18.4
Interest expense	$	(0.6	)	$	(0.6	)	$	(1.2	)	$	(1.3	)
Foreign exchange gain (loss)	0.3			(0.9		)	(4.1		)	(1.2		)
Gain (loss) on divestiture of Advanced Materials business	—			(0.8		)	2.0			(1.0		)
Charges associated with VAC arbitration conclusion	—			—			(10.4		)	—
Other income (expense), net	(5.8		)	(0.7		)	(2.9		)	(1.4		)
Income (loss) from continuing operations before income taxes	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Expenditures for property, plant & equipment
Magnetic Technologies	$	3.8		$	6.0		$	7.5		$	7.7
Battery Technologies	0.8			0.5			1.4			1.4
Specialty Chemicals	1.3			1.0			1.7			1.5
Corporate	—			0.1			—			0.2
	$	5.9		$	7.6		$	10.6		$	10.8
Depreciation and amortization
Magnetic Technologies	$	8.4		$	11.9		$	17.0		$	23.7
Battery Technologies	2.9			2.6			5.9			5.1
Specialty Chemicals	3.3			3.5			6.5			7.1
Corporate	0.2			0.3			0.3			0.5
	$	14.8		$	18.3		$	29.7		$	36.4

15

(a) The three and six months ended June 30, 2015 included costs related to enterprise initiatives, including fees related to a proxy contest and competitive repositioning and cost optimization opportunities announced on February 18, 2015 of $0.8 million and $1.4 million in Magnetic Technologies, $1.2 million and $2.1 million in Specialty Chemicals, and $0.3 million and $0.8 million in Corporate, respectively. Certain of these opportunities are subject to ongoing negotiations with employee works councils and unions.

(b) The six months ended June 30, 2015 includes costs related to inventory purchase accounting step-up charges of $1.0 million related to the Yardney acquisition in Battery Technologies.

(c) In the fourth quarter of 2014, Battery Technologies entered into a research and development ("R&D") contract with the U.S. Government. The contract is a “best efforts” cost-sharing agreement and calls for Battery Technologies to develop a production line for lithium-ion batteries from October 2014 through June 2017. The total expected costs to build the production line are approximately $29.0 million, a significant majority of which is expected to be reimbursed by the U.S. Government under the terms of the contract. During the three and six months ended June 30, 2015, Battery Technologies incurred $1.2 million and $2.6 million of expenses and requested reimbursement for $1.1 million and $2.4 million of these expenses, which are recorded net within Selling, general and administrative expenses.

(d) The three and six months ended June 30, 2014 included costs related to cost reduction initiatives of $0.4 million in Specialty Chemicals.

(e) The three and six months ended June 30, 2015 included fees related to the Merger of $6.4 million and $7.8 million in Corporate.

16

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

(In millions, except as noted and share and per share amounts)

Management’s discussion and analysis of financial condition and results of operations should be read in conjunction with the consolidated financial statements and the notes thereto appearing elsewhere in this Form 10-Q.

Certain financial data may have been rounded. As a result of such rounding, the totals of data presented in this document may vary slightly from the actual arithmetical totals of such data.

General

OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovation and technology to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value.

On May 31, 2015, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with funds managed by Apollo Global Management, LLC (“Apollo Funds”) and Platform Specialty Products Corporation (“Platform”). Under the Merger Agreement, the Company will merge with an affiliate of Apollo Funds (the “Merger”). Immediately following the Merger, Apollo Funds will sell the Company’s electronic chemicals and photomasks businesses to Platform (the “Carve-out Transaction”). As a result of the Merger, each share of the Company’s common stock issued and outstanding immediately prior to the time of the Merger will be converted into the right to receive $34.00 per share in cash without interest (the “Merger Consideration”). The transactions are expected to be completed by the end of 2015.

The Merger Agreement contains certain termination rights by the Company including the Company's acceptance of a superior proposal from an "excluded party," which is defined as any entity from whom the Company has received a takeover proposal prior to or within 35 days after the signing of the Merger Agreement, at which time the Company would be required to pay a termination fee of $18.3 million. In the event the Merger Agreement is terminated for other reasons by the Company, including acceptance of a takeover proposal submitted by a non-excluded party, it may be required to pay a termination fee of $36.6 million.

Consummation of the Merger is conditional upon customary closing conditions, including the expiration or termination of any applicable waiting periods under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 ("HSR Act") and other consents and approvals required under non-US applicable antitrust laws. On June 19, 2015 and on June 26, 2015, the FTC granted early termination of the waiting period under the HSR Act with respect to the Merger and the Carve-out Transaction, respectively. Several approvals from non-US regulatory parties are still outstanding.

On February 18, 2015, we announced a wide-ranging set of competitive repositioning and cost optimization opportunities throughout the enterprise that are expected to improve our ability to serve customers, better compete in global markets and deliver stronger financial performance. The opportunities include: headcount reductions; site consolidations; relocation of certain operations to improve our cost structure and better serve customers; better alignment of various research and development, marketing and technical activities with customers’ next generation products and applications; and additional corporate cost reductions.

During the six months ended June 30, 2015, we incurred charges of $3.5 million related to the competitive repositioning and cost optimization opportunities commenced to date across the enterprise. We expect these initial actions to deliver annualized savings of $4.0 million to $5.0 million when fully implemented. We also expect to implement additional initiatives in 2015 and beyond, and anticipate the costs of implementing these opportunities will not have a material impact on our financial position or liquidity and will be funded by operating cash flows and borrowings on our revolving credit facility if necessary. In July 2015, we substantially completed negotiations with the employee works council and union in Germany with respect to competitive repositioning and cost optimization in our Magnetic Technologies business. At this time, implementation plans have not been completed, and as such, potential costs cannot be determined.

17

On November 24, 2014, we completed the acquisition of Ener-Tek International, Inc., which operates under the brand name Yardney Technical Products ("Yardney") and has been included in our Battery Technologies business. Based in Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances. During the six months ended June 30, 2015, a post-closing working capital adjustment and an arbitration settlement with a former real property lessor resulted in a $2.2 million purchase price reduction, resulting in a purchase price of $22.4 million.

On March 29, 2013, we completed the divestiture of our cobalt-based Advanced Materials business. The sale agreement for the downstream portion of the business also provides for potential future cash consideration of up to $110.0 million based on the business achieving certain revenue targets over a period of three years. Using our projected trends of cobalt prices and volumes, it is not probable that the business will meet the revenue targets, and no value was assigned to the potential future cash consideration at December 31, 2014 and June 30, 2015.

We operate three strategic business platforms: Magnetic Technologies, Battery Technologies, and Specialty Chemicals. In 2015, we also have limited continuing involvement in the Advanced Materials business through transition agreements with the buyer as described below. Further discussion of and financial information for these segments, including third-party net sales and operating profit, are contained in Note 14 to the accompanying Unaudited Condensed Consolidated Financial Statements of this Quarterly Report on Form 10-Q.

Magnetic Technologies

The Magnetic Technologies segment develops, manufactures and distributes differentiated, high-performance industrial-use magnetic materials and related products and systems with exceptional magnetic and/or physical properties for a wide array of end markets, including automotive systems, electrical installation technology, energy conversion and distribution, industrial, retail and renewable energy.

Battery Technologies

The Battery Technologies segment develops, manufactures and distributes specialty batteries, battery management systems, battery-related research and energetic devices for the defense, space, medical, energy storage, commercial aerospace and oil and gas markets.

Specialty Chemicals

The Specialty Chemicals segment develops, produces and supplies chemicals for consumer electronics applications; industrial applications including coatings, composites and catalysts; and photomasks used by customers to produce semiconductors and related products.

Advanced Materials (divested)

As discussed above, we exited this business in 2013. Following the sale, to assist in the transition of the downstream business, we entered into an agreement with the buyer to act as intermediary in a cobalt feed supply agreement between GTL and the buyer, in back-to-back arrangements for a period of two years. The supply agreement terminated as of March 31, 2015 and all related activity under the agreement was completed in the second quarter of 2015, including the payment of a $1.0 million performance bonus to us. This agreement is reported in the Advanced Materials segment.

Executive Overview - Second Quarter 2015

Net sales in the second quarter were $228.4 million, or, excluding the divested Advanced Materials business, $226.8 million compared to $253.8 million in the second quarter of 2014. This decline was due primarily to a $29.8 million unfavorable EUR/USD foreign currency translation impact. Excluding both the Advanced Materials sales and the unfavorable translation impact, net sales increased by 1%. Excluding the translation impact, Magnetic Technologies sales were 5% higher due primarily to higher sales volumes in automotive systems and renewable energy applications. Battery Technologies net sales were 4% higher than last year's second quarter due to sales from the Yardney business acquired in the fourth quarter of 2014, partially offset by lower sales volumes for medical applications due primarily to the loss of a medical customer contract in the second half of 2014. Excluding the translation impact, sales in Specialty Chemicals were 5% lower compared to the corresponding period last year due to lower sales volumes in printed circuit board as a result of weaker customer demand.    

During the quarter, the Company incurred charges of $2.3 million related to its enterprise initiatives, including competitive repositioning and cost optimization opportunities. In addition, the Company incurred charges of $6.4 million related to

18

the Merger. The combined charges of $8.7 million have been excluded from the Company’s presentation of adjusted pro forma EBITDA, which is reconciled below.

Excluding the $8.7 million of charges discussed above and the results of the divested Advanced Materials business, adjusted EBITDA in the 2015 second quarter was $22.3 million compared to $31.1 million in the comparable quarter of 2014. This decrease was due primarily to (1) lower profitability in Magnetic Technologies driven by the negative impact of EUR/USD foreign currency translation; the negative impact of inflation on operating expenses; the impact of production inefficiencies in the first half of 2015 due to our repositioning initiatives; and lower selling prices; and (2) lower profitability in Battery Technologies due to lower sales volumes and unfavorable mix. These negative factors more than offset profit from higher sales volumes in Magnetic Technologies and the positive contribution of the Yardney acquisition in Battery Technologies. Profitability in Specialty Chemicals was relatively flat year over year, as higher sales volumes in photomasks and benefits from cost reduction actions offset weakness in printed circuit board sales. A reconciliation of U.S. GAAP to adjusted numbers is contained on pages 19 and 20.

Consolidated Operating Results

	Three months ended										Six months ended
	June 30,										June 30,
(In millions, except per share data & percent of net sales)	2015					2014					2015					2014
Net sales	$	228.4				$	297.5				$	476.2				$	559.2
Cost of goods sold	174.6					234.4					372.1					434.2
Gross profit	53.8			23.6	%	63.1			21.2	%	104.1			21.9	%	125.0			22.4	%
Selling, general and administrative expenses	54.5			23.9	%	53.2			17.9	%	109.4			23.0	%	106.6			19.1	%
Operating profit (loss)	(0.7		)	(0.3	)%	9.9			3.3	%	(5.3		)	(1.1	)%	18.4			3.3	%
Gain (loss) on divestiture of Advanced Materials business	—					(0.8		)			2.0					(1.0		)
Charges associated with VAC arbitration conclusion	—					—					(10.4		)			—
Other expense, net	(6.1		)			(2.2		)			(8.2		)			(3.9		)
Income tax (benefit) expense	(15.2		)			1.8					(19.1		)			3.1
Income (loss) from continuing operations, net of tax	8.4					5.1					(2.8		)			10.4
Loss from discontinued operations, net of tax	(0.1		)			(0.3		)			—					(0.3		)
Consolidated net income (loss)	8.3					4.8					(2.8		)			10.1
Earnings (loss) per common share — assuming dilution:
Income (loss) from continuing operations	$	0.27				$	0.16				$	(0.09	)			$	0.33
Income (loss) from discontinued operations	—					(0.01		)			—					(0.02		)
Net income (loss)	$	0.27				$	0.15				$	(0.09	)			$	0.31

We are providing adjusted operating profit (loss), adjusted EBITDA, and adjusted earnings from continuing operations per common share assuming dilution, which are non-GAAP financial measures. The tables below present reconciliations of these amounts to the comparable U.S. GAAP amounts. We believe that the non-GAAP financial measures presented in the tables facilitate a comparative assessment of our operating performance and enhance investors' understanding of the performance of our operations. The non-GAAP financial information set forth in the tables below are not alternatives to reported results determined in accordance with U.S. GAAP.

19

	For the three months ended
	June 30, 2015
	Magnetic Technologies		Battery Technologies		Specialty Chemicals		Corporate			Subtotal			Advanced Materials			Consolidated
Operating profit (loss) - as reported	$	0.5	$	5.2	$	7.8	$	(14.7	)	$	(1.2	)	$	0.5		$	(0.7	)
Fees related to the Merger	—		—		—		6.4			6.4			—			6.4
Charges related to initiatives	0.8		—		1.2		0.3			2.3			—			2.3
Adjusted operating profit	1.3		5.2		9.0		(8.0		)	7.5			0.5			8.0
Depreciation and amortization	8.4		2.9		3.3		0.2			14.8			—			14.8
Adjusted EBITDA	$	9.7	$	8.1	$	12.3	$	(7.8	)	$	22.3		$	0.5		$	22.8
	June 30, 2014
	Magnetic Technologies		Battery Technologies		Specialty Chemicals		Corporate			Subtotal			Advanced Materials			Consolidated
Operating profit (loss) - as reported	$	3.2	$	8.1	$	8.5	$	(7.4	)	$	12.4		$	(2.5	)	$	9.9
Charges related to initiatives	—		—		0.4		—			0.4			—			0.4
Adjusted operating profit	3.2		8.1		8.9		(7.4		)	12.8			(2.5		)	10.3
Depreciation and amortization	11.9		2.6		3.5		0.3			18.3			—			18.3
Adjusted EBITDA	$	15.1	$	10.7	$	12.4	$	(7.1	)	$	31.1		$	(2.5	)	$	28.6

	For the six months ended
	June 30, 2015
	Magnetic Technologies			Battery Technologies		Specialty Chemicals		Corporate			Subtotal			Advanced Materials			Consolidated
Operating profit (loss) - as reported	$	(0.1	)	$	8.2	$	14.1	$	(27.2	)	$	(5.0	)	$	(0.3	)	$	(5.3	)
Fees related to the Merger	—			—		—		7.8			7.8			—			7.8
Charges related to initiatives	1.4			—		2.1		0.8			4.3			—			4.3
Yardney inventory purchase accounting step up	—			1.0		—		—			1.0			—			1.0
Adjusted operating profit	1.3			9.2		16.2		(18.6		)	8.1			(0.3		)	7.8
Depreciation and amortization	17.0			5.9		6.5		0.3			29.7			—			29.7
Adjusted EBITDA	$	18.3		$	15.1	$	22.7	$	(18.3	)	$	37.8		$	(0.3	)	$	37.5
	June 30, 2014
	Magnetic Technologies			Battery Technologies		Specialty Chemicals		Corporate			Subtotal			Advanced Materials			Consolidated
Operating profit (loss) - as reported	$	8.9		$	14.5	$	15.9	$	(17.4	)	$	21.9		$	(3.5	)	$	18.4
Charges related to initiatives	—			—		0.4		—			0.4			—			0.4
Adjusted operating profit	8.9			14.5		16.3		(17.4		)	22.3			(3.5		)	18.8
Depreciation and amortization	23.7			5.1		7.1		0.5			36.4			—			36.4
Adjusted EBITDA	$	32.6		$	19.6	$	23.4	$	(16.9	)	$	58.7		$	(3.5	)	$	55.2

20

	Three Months Ended												Six Months Ended
	June 30,												June 30,
	2015						2014						2015						2014
	Amounts			Diluted EPS			Amounts			Diluted EPS			Amounts			Diluted EPS			Amounts			Diluted EPS
Income (loss) from continuing operations attributable to OM Group, Inc. common stockholders - as reported	$	8.4		$	0.27		$	5.1		$	0.16		$	(2.8	)	$	(0.09	)	$	10.4		$	0.33
Add (Less):
(Gain) loss on divestiture of Advanced Materials business	—			—			0.8			0.03			(2.0		)	(0.07		)	1.0			0.03
Fees related to the Merger	6.4			0.21			—			—			7.8			0.26			—			—
Charges related to initiatives	2.3			0.07			0.4			0.01			4.3			0.14			0.4			0.01
Yardney inventory purchase accounting step up	—			—			—			—			1.0			0.03			—			—
Charges associated with VAC arbitration conclusion	—			—			—			—			10.4			0.34			—			—
Gain on sale of property	—			—			—			—			(3.4		)	(0.11		)	—			—
Write-off of long-long term VAC indemnification receivable	(5.0		)	(0.16		)	—			—			(5.0		)	(0.16		)	—			—
Reversal of VAC uncertain tax position	5.0			0.16			—			—			5.0			0.16			—			—
Tax effect of special items	(12.1		)	(0.39		)	—			—			(15.7		)	(0.51		)	—			—
Adjusted income (loss) from continuing operations attributable to OM Group, Inc.	5.0			0.16			6.3			0.20			(0.4		)	(0.01		)	11.8			0.37
Exclude operating results from divested Advanced Materials business, net of tax	0.9			0.03			(2.5		)	(0.08		)	(0.6		)	(0.02		)	(3.6		)	(0.11		)
Adjusted income from continuing operations attributable to OM Group, Inc. excluding divested Advanced Materials	$	4.1		$	0.13		$	8.8		$	0.28		$	0.2		$	0.01		$	15.4		$	0.48
Weighted average shares outstanding - diluted (a)				30.7						31.8						30.6						31.9

(a) For the six months ended June 30, 2015 because the reported loss from continuing operations is income on an adjusted basis, we used diluted shares to calculate EPS.

Second Quarter of 2015 Compared with Second Quarter of 2014

The following table identifies, by segment, the components of change in net sales and operating profit for the three months ended June 30, 2015, compared with the three months ended June 30, 2014:

	Net sales			Operating profit (loss) - as reported			Adjusted operating profit
2014	$	297.5		$	9.9		$	10.3
Change in 2015 from:
Magnetic Technologies	(21.0		)	(2.7		)	(1.9		)
Battery Technologies	1.7			(2.9		)	(2.9		)
Specialty Chemicals	(7.6		)	(0.7		)	0.1
Advanced Materials	(42.2		)	3.0			3.0
Corporate	—			(7.3		)	(0.6		)
2015	$	228.4		$	(0.7	)	$	8.0

Net sales in the second quarter were $228.4 million, or $226.8 million excluding the divested Advanced Materials business, compared to $253.8 million in the second quarter of 2014. Excluding the Advanced Materials sales, sales were $27.0 million lower in 2015 due primarily to a $29.8 million unfavorable EUR/USD foreign currency translation impact. Excluding both the Advanced Materials sales and the unfavorable translation impact, net sales increased by 1%. Excluding the translation impact, Magnetic Technologies sales were 5% higher due primarily to higher sales

21

volumes in automotive systems and renewable energy applications. Battery Technologies net sales were 4% higher than last year's second quarter due to sales from the Yardney business acquired in the fourth quarter of 2014, partially offset by lower sales volumes for medical applications due primarily to the loss of a medical customer contract in the second half of 2014. Excluding the translation impact, sales in Specialty Chemicals were 5% lower compared to the corresponding period last year due to lower sales volumes in printed circuit board and advanced organic applications as a result of weaker customer demand.

Gross profit decreased $9.3 million in the three months ended June 30, 2015 compared with the three months ended June 30, 2014. As a percent of sales, excluding the divested Advanced Materials business, gross margin decreased to 23.4% in the second quarter of 2015 from 24.9% in the year ago quarter. Both of these decreases were driven primarily by an unfavorable foreign currency translation impact, higher manufacturing expenses, production inefficiencies and lower selling prices in Magnetic Technologies, and lower sales volumes and unfavorable mix in Battery Technologies.

Selling, general and administrative expenses (“SG&A”) increased to $54.5 million in the three months ended June 30, 2015from $53.2 million in the three months ended June 30, 2014. SG&A as a percentage of net sales was 23.9% in the second quarter of 2015 compared with 21.0% in the second quarter of 2014 excluding the sales of Advanced Materials. The increases in 2015 are primarily due to fees and expenses related to the Merger, which more than offset lower SG&A as a result of the lower EUR/USD rate and our cost reduction actions.

The following table summarizes the components of Other income (expense), net for the three months ended June 30:

	2015			2014			Change
Interest expense	$	(0.6	)	$	(0.6	)	$	—
Foreign exchange gain (loss)	0.3			(0.9		)	1.2
Loss on divestiture of Advanced Materials business	—			(0.8		)	0.8
Other expense, net	(5.8		)	(0.7		)	(5.1		)
	$	(6.1	)	$	(3.0	)	$	(3.1	)

Other income (expense), net in the second quarter of 2015 includes a $5.0 million write-off of a long-term indemnification receivable in our Magnetic Technologies business during the quarter. The offsetting reversal of a corresponding $5.0 million uncertain tax position is recorded as an income tax benefit in the quarter, resulting in no impact on net income or earnings per share.

See Note 4(b) in the Unaudited Condensed Consolidated Financial Statements for discussion on the loss on divestiture of Advanced Materials business.

Income tax benefit for the three months ended June 30, 2015 was $15.2 million on pre-tax loss of $6.8 million. Excluding the effect of special charges, which include expenses related to the Merger described earlier and the write-off of the long-term indemnification receivable at VAC Holding GmbH ("VAC") in our Magnetic Technologies segment, and tax discrete items, which include the decrease of an uncertain tax position discussed in Note 8 in the Unaudited Condensed Consolidated Financial Statements, the effective income tax rate was 27.3%. For the three months ended June 30, 2014, income tax expense was $1.8 million on pre-tax income of $6.9 million, resulting in an effective income tax rate of 25.8%. These rates are lower than the U.S. statutory tax rate primarily due to income earned in tax jurisdictions with lower statutory rates than the U.S. and our financing structure, partially offset by losses in certain jurisdictions (including the U.S.) with no corresponding tax benefit.

22

Six Months Ended June 30, 2015 Compared with Six Months Ended June 30, 2014

The following table identifies, by segment, the components of change in net sales and operating profit for the six months ended June 30, 2015, compared with the six months ended June 30, 2014:

	Net sales			Operating profit - as reported			Adjusted operating profit
2014	$	559.2		$	18.4		$	18.8
Change in 2015 from:
Magnetic Technologies	(45.9		)	(9.0		)	(7.6		)
Battery Technologies	0.9			(6.3		)	(5.3		)
Specialty Chemicals	(9.5		)	(1.8		)	(0.1		)
Advanced Materials	(28.5		)	3.2			3.2
Corporate	—			(9.8		)	(1.2		)
Intersegment items	—			—			—
2015	$	476.2		$	(5.3	)	$	7.8

Net sales in the six months ended June 30, 2015 were $476.2 million, or $445.9 million excluding the divested Advanced Materials business, compared to $500.4 million in the 2014 period. Excluding the Advanced Materials business, sales were $54.5 million lower in 2015 due primarily due to a $55.7 million unfavorable EUR/USD foreign currency translation impact. Excluding both the Advanced Materials business and the unfavorable translation impact, net sales in 2015 were comparable to 2014.

Gross profit decreased $20.9 million in the six months ended June 30, 2015 compared with the six months ended June 30, 2014, primarily due to the unfavorable EUR/USD foreign currency translation impact, higher operating expenses and production inefficiencies in Magnetic Technologies and the divestiture of Advanced Materials. As a percent of sales, excluding the Advanced Materials business, gross margin decreased to 23.1% in 2015 from 24.9% in the 2014 period. Both of these decreases were driven primarily by an unfavorable foreign currency translation impact, higher manufacturing expenses, production inefficiencies, and lower selling prices in Magnetic Technologies, and lower sales volumes and unfavorable mix in Battery Technologies.

Selling, general and administrative expenses (“SG&A”) increased to $109.4 million in the six months ended June 30, 2015from $106.6 million in the six months ended June 30, 2014, primarily due to fees and expenses related to the Merger, which more than offset lower SG&A as a result of the lower EUR/USD rate and our cost reduction actions.

The following table summarizes the components of Other Income (expense), net for the six months ended June 30:

	2015			2014			Change
Interest expense	$	(1.2	)	$	(1.3	)	$	0.1
Foreign exchange loss	(4.1		)	(1.2		)	(2.9		)
Gain (loss) on divestiture of Advanced Materials business	2.0			(1.0		)	3.0
Charges associated with VAC arbitration conclusion	(10.4		)	—			(10.4		)
Other expense, net	(2.9		)	(1.4		)	(1.5		)
	$	(16.6	)	$	(4.9	)	$	(11.7	)

The foreign exchange losses are primarily related to movements in EUR/USD exchange rates and the resulting impact on the revaluation of non-functional currency balances. The charges associated with the VAC arbitration conclusion relate to settlement of this issue in the first quarter of 2015, which included payment of interest and legal fees. Other income (expense), net in 2015 includes the $5.0 million write-off of a long-term indemnification receivable discussed earlier, partially offset by the gain on the sale of a Specialty Chemicals facility of $3.4 million during the first quarter. The write-off of the indemnification receivable was offset by the reversal of an equal uncertain tax position that was recorded as an income tax benefit.

Income tax benefit for the six months ended June 30, 2015 was $19.1 million on pre-tax loss of $21.9 million. Excluding the effect of special charges, which include expenses related to the Merger described earlier and the write-off of the long-term indemnification receivable at VAC Holding GmbH ("VAC") in our Magnetic Technologies segment, tax discrete items, which include the decrease of an uncertain tax position discussed in Note 8 in the Unaudited Condensed Consolidated Financial Statements, and loss entities with no tax benefits, our effective income tax rate was 29.4%. For the six months ended June 30, 2014, income tax expense was $3.1 million on pre-tax income of $13.5 million, resulting in an effective income tax rate of 23.3%. These rates are lower than the U.S. statutory tax rate primarily due

23

to income earned in tax jurisdictions with lower statutory rates than the U.S. and our financing structure, partially offset by losses in certain jurisdictions (including the U.S.) with no corresponding tax benefit.

Segment Results and Corporate Expenses

Magnetic Technologies

This segment is focused on developing new products and applications, including leveraging its substantial patent portfolio, know-how and expertise to enter new markets and increase market share; and progressing its competitive repositioning and cost optimization activities.

The primary raw materials used by Magnetic Technologies are nickel, cobalt and certain rare earth materials, primarily dysprosium and neodymium. Rare earth materials are currently available from a limited number of suppliers, primarily in China. We generally pass through rare earth prices to our customers in our selling prices, typically with a lag period. Rare earth prices have been fairly stable in 2015, and therefore had a minor impact on sales and profit during the year.

The following table identifies the components of changes in net sales and operating profit (loss):

	Three Months Ended									Six Months Ended
	June 30,									June 30,
	Net sales			Operating profit - as reported			Adjusted operating profit			Net sales			Operating profit - as reported			Adjusted operating profit
2014	$	130.9		$	3.2		$	3.2		$	260.1		$	8.9		$	8.9
Increase (decrease) in 2015 from:
Volume/sales mix	3.8			0.7			0.7			1.4			(1.3		)	(1.3		)
Selling price	(1.8		)	(1.8		)	(1.8		)	(3.3		)	(3.3		)	(3.3		)
Charges related to initiatives	—			(0.8		)	—			—			(1.4		)	—
Foreign currency translation	(26.5		)	(0.4		)	(0.4		)	(49.3		)	(0.8		)	(0.8		)
Other	3.5			(0.4		)	(0.4		)	5.3			(2.2		)	(2.2		)
2015	$	109.9		$	0.5		$	1.3		$	214.2		$	(0.1	)	$	1.3

Net sales were lower in the 2015 periods compared to 2014 due primarily to the unfavorable currency translation impact of the weaker Euro compared to the U.S. dollar. Sales were also negatively impacted by lower selling prices and positively impacted by higher sales volumes in certain automotive and renewable energy applications. Adjusted operating profit was lower in the 2015 periods compared to 2014 due primarily to higher operating expenses, including inflation, and production inefficiencies (included in Other in the table above), the impact of lower selling prices and unfavorable sales mix that offset profit from the higher volumes in the six-month period.

Charges related to initiatives in the three and six months ended June 30, 2015 relate to the competitive repositioning and cost-optimization initiatives previously described.

Battery Technologies

The segment is focused on integrating the Yardney acquisition; developing new specialty battery chemistries, products and applications; expanding its served markets into new and emerging markets, including grid energy storage, commercial aerospace and oil and gas; and reducing medical battery production costs in response to the loss of a key customer contract in the second half of 2014.

24

The following table identifies the components of changes in net sales and operating profit:

	Three Months Ended									Six Months Ended
	June 30,									June 30,
	Net sales			Operating profit - as reported			Adjusted operating profit			Net sales			Operating profit - as reported			Adjusted operating profit
2014	$	41.0		$	8.1		$	8.1		$	81.5		$	14.5		$	14.5
Increase (decrease) in 2015 from:
Volume	(4.7		)	(1.9		)	(1.9		)	(11.0		)	(3.5		)	(3.5		)
Sales mix	—			(1.8		)	(1.8		)	0.4			(3.7		)	(3.7		)
Yardney acquisition	6.4			0.5			0.5			11.5			1.3			1.3
Yardney inventory purchase accounting step up	—			—			—			—			(1.0		)	—
Other	—			0.3			0.3			—			0.6			0.6
2015	$	42.7		$	5.2		$	5.2		$	82.4		$	8.2		$	9.2

Net sales in the 2015 periods were higher than the corresponding 2014 periods, driven primarily by increased sales due to the acquisition of Yardney in the fourth quarter of 2014. These sales were partially offset by lower sales volumes in defense due to lower export sales, in aerospace due to an anticipated technology shift and in medical due to loss of a key customer contract last year.

Adjusted operating profit in the 2015 periods was lower than the corresponding 2014 periods due primarily to lower sales volumes and unfavorable mix, partially offset by profit contribution from Yardney sales.

The Battery Technologies segment tracks backlog, which is equal to the value of unfulfilled orders for which funding is contractually obligated by the customer and for which revenue has not been recognized. At June 30, 2015, backlog was $167.6 million, compared to $156.5 million at December 31, 2014. Of the June 30, 2015 amount, $80.1 million is expected to be converted to sales by December 31, 2015, with the remaining $87.5 million expected to be converted to sales in years beyond 2015.

Specialty Chemicals

This segment is focused on utilizing its technology to provide solutions for electronic devices with increasing demanding performance specifications and miniaturization; progressing its competitive repositioning and cost optimization activities; and streamlining its product portfolio.

The following table identifies the components of changes in net sales and operating profit:

	Three Months Ended									Six Months Ended
	June 30,									June 30,
	Net sales			Operating profit - as reported			Adjusted operating profit			Net sales			Operating profit - as reported			Adjusted operating profit
2014	$	81.9		$	8.5		$	8.9		$	158.8		$	15.9		$	16.3
Increase (decrease) in 2015 from:
Volume	(3.6		)	(1.9		)	(1.9		)	(2.2		)	(1.0		)	(1.0		)
Selling price/mix	—			1.3			1.3			0.1			(0.5		)	(0.5		)
Foreign currency translation	(3.3		)	(0.1		)	(0.1		)	(6.4		)	(0.5		)	(0.5		)
Charges related to initiatives	—			(0.8		)	—			—			(1.7		)	—
Other	(0.8		)	0.8			0.8			(1.0		)	1.9			1.9
2015	$	74.2		$	7.8		$	9.0		$	149.3		$	14.1		$	16.2

Net sales in 2015 periods were lower compared to the corresponding periods of 2014 due primarily to the lower EUR/USD exchange rate and lower sales volumes due to weaker demand for printed circuit board and advanced organic applications. Adjusted operating profit was relatively flat in the 2015 periods compared to a year ago, as the negative impact of lower sales and unfavorable mix was offset by benefits from cost reduction actions.

25

Charges related to initiatives in the three and six months ended June 30, 2015 relate primarily to headcount reductions across the segment as part of our competitive repositioning and cost-optimization initiatives.

Advanced Materials

Prior to its divestiture in 2013, this business manufactured inorganic products using unrefined cobalt and other metals, for a range of end markets. As discussed earlier, we divested this business as of March 29, 2013. Activity in this segment beginning in the second quarter of 2013 represents performance under the transition agreements described earlier.

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2015		2014			2015			2014
Net sales	$	1.6	$	43.7		$	30.3		$	58.8
Operating loss	$	0.5	$	(2.5	)	$	(0.3	)	$	(3.5	)

Corporate Expenses

Corporate expenses consist of corporate overhead supporting the operating segments but not specifically allocated to an operating segment, including certain legal, finance, human resources and strategic development activities, as well as all share-based compensation for the enterprise.

Corporate expenses were $14.7 million in the second quarter of 2015 compared with $7.4 million in the second quarter of 2014. The amount in the 2015 period is higher due primarily to $6.4 million of fees related to the Merger as described earlier. Excluding this amount, corporate expenses in the 2015 period are comparable to the prior-year period.

Corporate expenses were $27.2 million in the first six months of 2015 compared to $17.4 million in the 2014 period, due primarily to $7.8 million of expenses in 2015 related to the Merger and fees related to a proxy contest. Excluding the special amount, corporate expenses in 2015 were higher than the 2014 period largely due to higher share-based compensation expense resulting from accelerated vesting of certain equity awards.

Liquidity and Capital Resources

Cash Flow Summary

Our cash flows from operating, investing and financing activities, as reflected in the Unaudited Condensed Consolidated Statements of Cash Flows, are presented in the following table and discussed in the related narrative:

	Six months ended
	June 30,
	2015			2014
Net cash provided by (used for):
Operating activities	$	0.7		$	21.8
Investing activities	(7.2		)	(9.8		)
Financing activities	(47.2		)	(15.1		)
Effect of exchange rate changes on cash	(2.1		)	(0.2		)
Cash used by discontinued operations	(0.1		)	(0.8		)
Net change in cash and cash equivalents	$	(55.9	)	$	(4.1	)

Operating Activities

In the first six months of 2015, cash inflow from operating activities was $0.7 million compared with a cash inflow of $21.8 million in the same period of the prior year. In March 2015, we made a payment to the seller of VAC that included $10.7 million for interest charges and legal fee reimbursement associated with the VAC arbitration conclusion. The cash flows from operating activities can fluctuate significantly from period-to-period due to profitability, working capital

26

changes and the timing of payments for items such as income taxes, pensions and other items which impact reported cash flows.

Investing Activities

We used $10.6 million of cash for capital expenditures in the first six months of 2015 primarily to: expand capacity; to maintain and improve throughput; for compliance with environmental, health and safety regulations; and for other fixed asset additions at existing facilities. We expect to fund 2015 capital expenditures through cash generated from operations and cash on hand at June 30, 2015. Cash inflow of $2.2 million in the first six months of 2015 was provided by purchase price reimbursements on the Yardney acquisition. Net cash used by investing activities in the first six months of 2014 was primarily for capital expenditures of $10.8 million.

Financing Activities

In the first six months of 2015, net payments of $10.1 million were made on the revolving credit facility. We used $41.8 million of cash to pay the non-tax related purchase price of VAC payable to seller in March 2015, which was funded with borrowings from our revolving credit facility and cash on hand. We used $2.5 million and $4.8 million of cash to pay dividends in the first six months of 2015 and 2014, respectively.

Financial Condition

Cash balances are held in numerous locations throughout the world. As of June 30, 2015, most of our cash and cash equivalents were held outside the United States, primarily in Germany and Taiwan. Most of the amounts held outside the U.S. could be repatriated to the U.S. but, under current law, would be subject to U.S. income taxes, less applicable foreign tax credits. Our intent is to meet U.S. liquidity needs through cash generated from operations in the U.S., repatriation of future foreign earnings for certain subsidiaries, and external borrowings. We expect our available cash, 2015 operating cash flows and availability under our revolving credit facility described below to be adequate to fund 2015 operating needs and capital expenditures.

Debt and Other Financing Activities

On September 4, 2013, we entered into a five-year Senior Secured Revolving Credit Facility (the "Facility”), and terminated our previous credit facility dated August 2, 2011 that was scheduled to expire in August 2016. The Facility provides for $350 million of revolving borrowing capacity and includes an expansion option of up to an additional $150 million, subject to certain conditions. The borrowers under the agreement are the Company, Harko C.V. (“Harko”), a limited partnership organized under the laws of the Netherlands, and VAC Germany GmbH (“VAC”), a limited liability company under the laws of Germany. Harko and VAC are wholly-owned subsidiaries of the Company. The Facility matures on September 4, 2018. As of June 30, 2015, we had $2.4 million outstanding under the Facility and were in compliance with all Facility covenants. See Note 5 in the Unaudited Consolidated Financial Statements included in this Form 10-Q for further discussion of the Facility.

Contractual Obligations

Since December 31, 2014, there have been no significant changes in the total amount of contractual obligations, or the timing of cash flows in accordance with those obligations, as reported in our Annual Report on Form 10-K for the year ended December 31, 2014.

Critical Accounting Policies

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions in certain circumstances that affect amounts reported in the accompanying unaudited condensed consolidated financial statements. In preparing these financial statements, management has made its best estimates and judgments of certain amounts, giving due consideration to materiality. The application of accounting policies involves the exercise of judgment and use of assumptions as to future uncertainties and, as a result, actual results could differ from these estimates. In addition, other companies may utilize different estimates and assumptions, which may impact the comparability of our results of operations to similar businesses. There have been no changes to the critical accounting policies as stated in our Annual Report on Form 10-K for the year ended December 31, 2014.

Cautionary Statement for “Safe Harbor” Purposes under the Private Securities Litigation Reform Act of 1995

The Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements made by or on behalf of the Company. This report contains statements that we believe may be “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are not historical facts and generally can be identified by use of statements that include words such as “believe,” “expect,”

27

“anticipate,” “intend,” “plan,” “foresee” or other words or phrases of similar import. Similarly, statements that describe our objectives, plans or goals also are forward-looking statements. These forward-looking statements are subject to risks and uncertainties that are difficult to predict, may be beyond our control and could cause actual results to differ materially from those currently anticipated. We undertake no obligation to publicly revise these forward-looking statements to reflect events or circumstances that arise after the date hereof. Significant factors affecting these expectations are set forth under Item 1A — Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 2014.

Item 3.  Quantitative and Qualitative Disclosures about Market Risk

A discussion of market risk exposures is included in Part II, Item 7A. Quantitative and Qualitative Disclosure About Market Risk in our Annual Report on Form 10-K for the year ended December 31, 2014. There have been no material changes from the quantitative and qualitative disclosure about market risk previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2014.

Item 4.  Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of the Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures as of June 30, 2015. As defined in Rule 13a-15(e) under the Exchange Act, disclosure controls and procedures are controls and procedures designed to provide reasonable assurance that information required to be disclosed in reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported on a timely basis, and that such information is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. Our disclosure controls and procedures include components of our internal control over financial reporting. Based upon this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of June 30, 2015.

Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting, identified in connection with management's evaluation of internal control over financial reporting, that occurred during the three months ended June 30, 2015 and materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II - OTHER INFORMATION

Item 1. Legal Proceedings

Following the announcement of the Merger and Carve-Out Transaction described in Note 1, six putative class action lawsuits were filed in the Court of Chancery of the State of Delaware.  The actions subsequently were consolidated, and the case is proceeding as In re OM Group, Inc. Stockholders Litigation, C.A. No. 11216-VCN.  The operative complaint, originally filed in one of the constituent actions (City of Sarasota Firefighters’ Pension Fund v. Apollo Global Management, LLC, et al., C.A. No. 11249) generally alleges, among other things, that the directors of the Company breached their fiduciary duties to OM Group stockholders by engaging in a flawed sales process, agreeing to a price that does not adequately compensate OM Group stockholders, agreeing to certain unfair deal protection terms and failing to disclose certain information to investors.  Following expedited discovery, plaintiffs determined not to move for a preliminary injunction.  We believe that the allegations lack merit and we intend to defend the lawsuit vigorously.

Item 1A. Risk Factors

The following risk factor has arisen since the beginning of the current year. For a complete discussion of events that could materially adversely affect our business, financial condition and results of operations, if they occur, see Item 1A "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2014.

Failure to complete the Merger could adversely impact our stock price, future business and financial results

On May 31, 2015, the Company entered into the Merger Agreement with Apollo Funds and Platform. Under the Merger Agreement, an affiliate of Apollo Funds will acquire all of its outstanding shares for $34.00 per share in cash, and immediately following the Merger, Apollo Funds will sell the Company’s electronic chemicals and photomasks

28

businesses to Platform. The Merger Agreement contains certain termination rights by the Company, Apollo Funds and Platform.

If the Merger is not completed, the Company will be subject to certain risks, including the following: (1) a decline in the price of its common stock, as the current price may reflect the market assumption that the Merger Agreement will be completed, and (2) payment of a termination fee under certain circumstances if the Merger Agreement is terminated.

Further, the Merger and related matters may divert management's attention from day-to-day business and require substantial commitments of time and resources.

Item 6.  Exhibits

Exhibits are as follows:

2.1	Agreement and Plan of Merger, by and among Duke Acquisition Holdings, LLC, Duke Acquisition, Inc., MacDermid Americas Acquisitions Inc., and OM Group, Inc. (incorporated by reference to Exhibit 2.1 to the Company's current report on Form 8-K filed June 1, 2015)
3.1	Second Amended and Restated Bylaws of OM Group, Inc. (incorporated by reference to Exhibit 3.1 to the Company's current report on Form 8-K filed June 1, 2015)
31.1	Certification of Principal Executive Officer Pursuant to Rule 13a-14(a)
31.2	Certification of Principal Financial Officer Pursuant to Rule 13a-14(a)
32	Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. 1350
101.1	Instance Document
101.2	Schema Document
101.3	Calculation Linkbase Document
101.4	Definition Linkbase Document
101.5	Labels Linkbase Document
101.6	Presentation Linkbase Document

29

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.

OM GROUP, INC.

Date: August 5, 2015	By:	/s/ Christopher M. Hix
		Christopher M. Hix
		Vice President and Chief Financial Officer
		(Principal Financial Officer and Duly Authorized Officer)

30

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Joseph Scaminace, certify that:

1. I have reviewed this report on Form 10-Q of OM Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: August 5, 2015 /s/Joseph Scaminace Joseph Scaminace Chairman of the Board and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Christopher M. Hix, certify that:

1. I have reviewed this report on Form 10-Q of OM Group, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: August 5, 2015 /s/Christopher M. Hix Christopher M. Hix Vice President and Chief Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SEC. 1350, AS ADOPTED PURSUANT TO

SEC. 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the filing with the Securities and Exchange Commission of the Quarterly Report on Form 10-Q of OM Group, Inc. (the "Company") for the quarter ended June 30, 2015 (the "Report"), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. Sec. 1350, as adopted pursuant to Sec. 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 5, 2015	/s/Joseph Scaminace Joseph Scaminace Chairman of the Board and Chief Executive Officer
	/s/Christopher M. Hix Christopher M. Hix Vice President and Chief Financial Officer

XML

Defined Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension liabilities	$ 229.4	$ 244.4
VAC [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension liabilities	$ 237.2	$ 253.1

XML

Reportable Segments (Results of Reportable Segments) (Details) $ in Millions		3 Months Ended		6 Months Ended		33 Months Ended
		Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)	Jun. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment				4
Net sales
Net sales		$ 228.4	$ 297.5	$ 476.2	$ 559.2
Operating profit (loss)
Operating profit (loss)		(0.7)	9.9	(5.3)	18.4
Interest expense		(0.6)	(0.6)	(1.2)	(1.3)
Foreign exchange gain (loss)		0.3	(0.9)	(4.1)	(1.2)
Gain (loss) on divestiture of Advanced Materials business		0.0	(0.8)	2.0	(1.0)
Charges associated with VAC arbitration conclusion		0.0	0.0	(10.4)	0.0
Other income (expense), net		(5.8)	(0.7)	(2.9)	(1.4)
Income (loss) from continuing operations before income tax expense		(6.8)	6.9	(21.9)	13.5
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment		5.9	7.6	10.6	10.8
Depreciation and amortization
Depreciation and amortization		14.8	18.3	29.7	36.4
Cost reductions initiatives		1.2
Magnetic Technologies [Member]
Net sales
Net sales		109.9	130.9	214.2	260.1
Operating profit (loss)
Operating profit (loss)	[1]	0.5	3.2	(0.1)	8.9
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment		3.8	6.0	7.5	7.7
Depreciation and amortization
Depreciation and amortization		8.4	11.9	17.0	23.7
Cost reductions initiatives		0.8		1.4
Battery Technologies [Member]
Net sales
Net sales		42.7	41.0	82.4	81.5
Operating profit (loss)
Operating profit (loss)	[2],[3]	5.2	8.1	8.2	14.5
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment		0.8	0.5	1.4	1.4
Depreciation and amortization
Depreciation and amortization		2.9	2.6	5.9	5.1
Amount of inventory step-up amortization				1.0
Research and development arrangement with federal government costs incurred, gross		1.2		2.6
Research and development arrangement with federal government, customer funding to offset costs incurred			1.1		2.4
Battery Technologies [Member] | Scenario, Forecast [Member]
Depreciation and amortization
Research and development arrangement with federal government costs incurred, gross						$ 29.0
Specialty Chemicals [Member]
Net sales
Net sales		74.2	81.9	149.3	158.8
Operating profit (loss)
Operating profit (loss)	[1]	7.8	8.5	14.1	15.9
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment		1.3	1.0	1.7	1.5
Depreciation and amortization
Depreciation and amortization		3.3	3.5	6.5	7.1
Cost reductions initiatives		2.1			0.4
Advanced Materials [Member]
Net sales
Net sales		1.6	43.7	30.3	58.8
Operating profit (loss)
Operating profit (loss)		0.5	(2.5)	(0.3)	(3.5)
Corporate [Member]
Operating profit (loss)
Operating profit (loss)	[1]	(14.7)	(7.4)	(27.2)	(17.4)
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment		0.0	0.1	0.0	0.2
Depreciation and amortization
Depreciation and amortization		0.2	$ 0.3	0.3	$ 0.5
Cost reductions initiatives		0.3		0.8
Merger fees		$ 6.4		$ 7.8

[1] enterprise initiatives, including fees related to a proxy contest and competitive repositioning and cost optimization opportunities announced on February 18, 2015 of $0.8 million and $1.4 million in Magnetic Technologies, $1.2 million and $2.1 million in Specialty Chemicals, and $0.3 million and $0.8 million in Corporate, respectively.

[2] In the fourth quarter of 2014, Battery Technologies entered into a research and development ("R&D") contract with the U.S. Government. The contract is a “best efforts” cost-sharing agreement and calls for Battery Technologies to develop a production line for lithium-ion batteries from October 2014 through June 2017. The total expected costs to build the production line are approximately $29.0 million, a significant majority of which is expected to be reimbursed by the U.S. Government under the terms of the contract. During the three and six months ended June 30, 2015, Battery Technologies incurred $1.2 million and $2.6 million of expenses and requested reimbursement for $1.1 million and $2.4 million of these expenses, which are recorded net within Selling, general and administrative expenses. (d)The three and six months ended June 30, 2014 included costs related to cost reduction initiatives of $0.4 million in Specialty Chemicals.(e)The three and six months ended June 30, 2015 included fees related to the Merger of $6.4 million and $7.8 million in Corporate.

[3] The six months ended June 30, 2015 includes costs related to inventory purchase accounting step-up charges of $1.0 million related to the Yardney acquisition in Battery Technologies.

XML

Share-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit for share-based compensation	$ 0	$ 0	$ 0	$ 0
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Quantity of securities issued	3,744	3,976	8,147	7,084

XML

Debt (Details) - USD ($)	Sep. 04, 2013	Jun. 30, 2015
Line of Credit Facility [Line Items]
Line of credit facility amount outstanding		$ 2,400,000
Senior Secured Revolving Credit New Facility [Member]
Line of Credit Facility [Line Items]
Debt instrument term	5 years
Undrawn revolving credit facility	$ 350,000,000
Line of credit facility borrowing capacity increase limit	$ 150,000,000
Percentage pledged by voting capital stock of certain foreign subsidiaries	65.00%
Percentage pledged by voting capital stock subject to certain exceptions	100.00%
Senior Secured Revolving Credit New Facility [Member] | Federal Funds Rate [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Variable Spread [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.125%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Variable Spread [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Senior Secured Revolving Credit New Facility [Member] | Applicable Margin [Member] | Adjusted Base Rate Advances [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.125%
Senior Secured Revolving Credit New Facility [Member] | Applicable Margin [Member] | Adjusted Base Rate Advances [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%

XML

Defined Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2015

U.S. Pension Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)

Set forth below is a detail of the net periodic pension expense for the U.S. defined benefit plans:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	0.3		$	0.3		$	0.6		$	0.6
Interest cost	1.9			2.3			3.7			4.7
Amortization of unrecognized net loss	(0.2		)	0.1			0.2			0.2
Expected return on plan assets	(2.3		)	(2.6		)	(4.5		)	(5.1		)
Total expense	$	(0.3	)	$	0.1		$	—		$	0.4

Non-U.S. Pension Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)

Set forth below is a detail of the net periodic pension expense for the VAC defined benefit plans:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Service cost	$	1.4	$	1.7	$	2.9	$	3.4
Interest cost	0.8		1.5		1.6		3.1
Amortization of unrecognized net loss	0.6		0.3		1.2		0.5
Total expense	$	2.8	$	3.5	$	5.7	$	7.0

XML

Earnings (Loss) Per Share (Computation Of Basic And Diluted Income Per Common Share From Continuing Operations) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Income (loss) from continuing operations, net of tax	$ 8.4	$ 5.1	$ (2.8)	$ 10.4
Earnings (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	$ 0.28	$ 0.16	$ (0.09)	$ 0.33
Income (loss) from continuing operations (in dollars per share)	$ 0.27	$ 0.16	$ (0.09)	$ 0.33
Weighted average shares outstanding - basic (in shares)	30.4	31.5	30.4	31.5
Dilutive effect of stock options and restricted stock (in shares)	0.3	0.3	0.0	0.4
Weighted average shares outstanding - assuming dilution (in shares)	30.7	31.8	30.4	31.9

XML

Income Taxes Income Taxes (Narrative) (Details) (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total	Total
Income Tax Disclosure [Abstract]
Decrease in uncertain tax position	$ 5.0	$ 5.0
Income tax receivable write off	$ 5.0	$ 5.0

XML

Share-Based Compensation (Compensation Expense For Nonvested Share-Based Awards Expected To Be Recognized) (Details) $ in Millions	Jun. 30, 2015 USD ($)
Share-based Compensation [Abstract]
Unrecognized compensation expense	$ 10.4
Unrecognized compensation expense to be recognized in 2015	3.5
Unrecognized compensation expense to be recognized in 2016	4.3
Unrecognized compensation expense to be recognized in 2017	$ 2.6

XML

Inventories

6 Months Ended

Jun. 30, 2015

Inventory, Net [Abstract]

Inventories

Inventories

Inventories consist of the following:

	June 30,		December 31,
	2015		2014
Raw materials and supplies	$	69.0	$	73.6
Work-in-process	115.3		118.1
Finished goods	34.5		36.7
	$	218.8	$	228.4

XML

Earnings (Loss) Per Share (Computation Of Basic And Diluted Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Net income (loss)	$ 8.3	$ 4.8	$ (2.8)	$ 10.1
Earnings (loss) per common share:
Net income (loss) (in dollars per share)	$ 0.28	$ 0.15	$ (0.09)	$ 0.32
Net income (loss) (in dollars per share)	$ 0.27	$ 0.15	$ (0.09)	$ 0.31
Weighted average shares outstanding - basic (in shares)	30.4	31.5	30.4	31.5
Dilutive effect of stock options and restricted stock (in shares)	0.3	0.3	0.0	0.4
Weighted average shares outstanding - assuming dilution (in shares)	30.7	31.8	30.4	31.9

XML

Reportable Segments (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting Information, Profit (Loss) [Abstract]

Results of Reportable Segments

The following table reflects the results of our reportable segments:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net sales
Magnetic Technologies	$	109.9		$	130.9		$	214.2		$	260.1
Battery Technologies	42.7			41.0			82.4			81.5
Specialty Chemicals	74.2			81.9			149.3			158.8
Advanced Materials	1.6			43.7			30.3			58.8
	$	228.4		$	297.5		$	476.2		$	559.2
Operating profit (loss)
Magnetic Technologies (a)	$	0.5		$	3.2		$	(0.1	)	$	8.9
Battery Technologies (b) (c)	5.2			8.1			8.2			14.5
Specialty Chemicals (a) (d)	7.8			8.5			14.1			15.9
Advanced Materials	0.5			(2.5		)	(0.3		)	(3.5		)
Corporate (a) (e)	(14.7		)	(7.4		)	(27.2		)	(17.4		)
	$	(0.7	)	$	9.9		$	(5.3	)	$	18.4
Interest expense	$	(0.6	)	$	(0.6	)	$	(1.2	)	$	(1.3	)
Foreign exchange gain (loss)	0.3			(0.9		)	(4.1		)	(1.2		)
Gain (loss) on divestiture of Advanced Materials business	—			(0.8		)	2.0			(1.0		)
Charges associated with VAC arbitration conclusion	—			—			(10.4		)	—
Other income (expense), net	(5.8		)	(0.7		)	(2.9		)	(1.4		)
Income (loss) from continuing operations before income taxes	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Expenditures for property, plant & equipment
Magnetic Technologies	$	3.8		$	6.0		$	7.5		$	7.7
Battery Technologies	0.8			0.5			1.4			1.4
Specialty Chemicals	1.3			1.0			1.7			1.5
Corporate	—			0.1			—			0.2
	$	5.9		$	7.6		$	10.6		$	10.8
Depreciation and amortization
Magnetic Technologies	$	8.4		$	11.9		$	17.0		$	23.7
Battery Technologies	2.9			2.6			5.9			5.1
Specialty Chemicals	3.3			3.5			6.5			7.1
Corporate	0.2			0.3			0.3			0.5
	$	14.8		$	18.3		$	29.7		$	36.4

XML

Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2015

Share-based Compensation [Abstract]

Share-Based Compensation Expense For Option Grants, Restricted Stock Awards And Restricted Stock Unit Awards

Set forth below is a summary of share-based compensation expense for option grants, restricted stock awards and restricted stock unit awards included as a component of Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Stock options and restricted stock awards	$	2.3	$	1.7	$	5.3	$	3.9
Restricted stock unit awards	0.2		—		0.3		0.2
Share-based compensation expense - employees	$	2.5	$	1.7	$	5.6	$	4.1
Share-based compensation expense - non-employee directors	$	0.1	$	0.1	$	0.3	$	0.3

XML

Earnings (Loss) Per Share (Non-Vested Share-Based Compensation Awards That Could Potentially Dilute Earnings Per Share) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Non-vested share-based compensation awards not included in the fully diluted computation (in shares)	0.1	0.1	0.1	0.1

XML

Basis of Presentation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended	6 Months Ended
	May. 31, 2015	Nov. 24, 2014	Jun. 30, 2015	Jun. 30, 2015
Related Party Transaction [Line Items]
Merger Agreement, Share Price	$ 34.00
Excluded party termination fee	$ 18.3
Non-excluded party termination fee	36.6
Reverse termination fee	62.7
Termination fee maximum	$ 11.3
Battery Technologies [Member]
Related Party Transaction [Line Items]
Purchase price total cash consideration		$ 24.6		$ 22.4
Purchase price reduction				2.2
Selling, General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Merger fees			$ 6.4	$ 7.8

XML

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Inventory, Net [Abstract]
Raw materials and supplies	$ 69.0	$ 73.6
Work-in-process	115.3	118.1
Finished goods	34.5	36.7
Inventories, total	$ 218.8	$ 228.4

XML

Recently Issued Accounting Guidance

6 Months Ended

Jun. 30, 2015

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Issued Accounting Guidance

Recently Issued Accounting Guidance

In April 2015, the Financial Accounting Standards Board (the "FASB") issued ASU No. 2015-03, “Interest - Imputation of Interest” (“ASU 2015-03”). The update amends the guidance for presenting deferred debt costs on the balance sheet and requires that the costs are recorded as a deduction from the carrying amount of debt. The amendments are effective for reporting periods beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact the adoption of ASU 2015-03 and believe the impact will not be material to our financial position.

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The update amends the guidance for revenue recognition to replace numerous, industry-specific requirements and converges areas under this topic with those of the International Financial Reporting Standards. On July 9, 2015 the FASB formally deferred the effective date one year, to reporting periods beginning after December 15, 2017. Early adoption is now allowed, but only after the original effective date of reporting periods beginning after December 15, 2016. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact the adoption of ASU 2014-09 may have on our results of operations or financial position.

XML

Acquisitions and Divestitures (Narrative) (Details) - USD ($) $ in Millions					1 Months Ended			3 Months Ended	6 Months Ended
	Nov. 24, 2014	Mar. 29, 2013	Aug. 02, 2011	Aug. 02, 2011	Mar. 31, 2015	Dec. 31, 2014	Aug. 31, 2013	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Business Acquisition [Line Items]
Payments for purchase price payable to seller									$ 41.8	$ 0.0
Reduction of purchase price payable to seller									$ 2.2	$ 0.0
Advanced Materials [Member]
Business Acquisition [Line Items]
Potential earn-out income		$ 110.0
Potential earn-out payment period		3 years
Period of continuing involvement after disposal									2 years
Performance bonus								$ 1.0
VAC [Member]
Business Acquisition [Line Items]
Purchase price total cash consideration			$ 812.2
Cash consideration paid for business acquisition			686.2		$ 52.5
Purchase price of VAC Holding payable to seller			86.3	$ 86.3				4.1	$ 4.1
Shares issued in connection with acquisition of VAC Holding			$ 39.7	$ 39.7
Period from closing date of acquisition relating to the withheld consideration				2 years
Payments for purchase price payable to seller					41.8	$ 16.2	$ 23.0
Reduction of purchase price payable to seller						$ 1.6
Payments for interest and legal costs related to payable to seller					$ 10.7
Battery Technologies [Member]
Business Acquisition [Line Items]
Purchase price total cash consideration	$ 24.6								22.4
Purchase price reduction									2.2
Allocation of net assets								12.0	$ 12.0
Identifiable intangible assets								6.5
Goodwill acquired								$ 10.4

XML

Defined Benefit Plans (Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0.3	$ 0.3	$ 0.6	$ 0.6
Interest cost	1.9	2.3	3.7	4.7
Amortization of unrecognized net loss	(0.2)	0.1	0.2	0.2
Expected return on plan assets	(2.3)	(2.6)	(4.5)	(5.1)
Total expense	(0.3)	0.1	0.0	0.4
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.4	1.7	2.9	3.4
Interest cost	0.8	1.5	1.6	3.1
Amortization of unrecognized net loss	0.6	0.3	1.2	0.5
Total expense	$ 2.8	$ 3.5	$ 5.7	$ 7.0

XML

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 35.8	$ 91.7
Accounts receivable, less allowance of $2.4 in 2015 and $2.5 in 2014	133.6	134.5
Inventories	218.8	228.4
Other current assets	38.7	21.5
Total current assets	426.9	476.1
Property, plant and equipment, net	281.7	308.3
Goodwill	248.1	252.6
Intangible assets, net	299.7	324.8
Other non-current assets	43.5	57.7
Total assets	1,299.9	1,419.5
Current liabilities
Revolving credit facility	2.4	12.5
Accounts payable	55.0	74.7
Accrued employee costs	39.9	34.9
Purchase price of VAC payable to seller	4.1	46.2
Other current liabilities	55.0	57.4
Total current liabilities	156.4	225.7
Deferred income taxes	67.5	74.8
Pension liabilities	229.4	244.4
Other non-current liabilities	30.0	37.7
Stockholders’ equity:
Preferred stock, $.01 par value: Authorized 2,000,000 shares, no shares issued or outstanding	0.0	0.0
Common stock, $.01 par value: Authorized 90,000,000 shares; 32,742,185 shares issued in 2015 and 32,408,222 shares issued in 2014	0.3	0.3
Capital in excess of par value	660.3	647.3
Retained earnings	400.1	405.3
Treasury stock (2,151,866 shares in 2015 and 2,136,116 shares in 2014, at cost)	(58.7)	(58.2)
Accumulated other comprehensive loss	(185.4)	(157.8)
Total stockholders' equity	816.6	836.9
Total liabilities and and stockholders' equity	$ 1,299.9	$ 1,419.5

XML

Share-Based Compensation (Compensation Expense For Option Grants, Restricted Stock Awards And Restricted Stock Unit Awards) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.1	$ 0.1	$ 0.3	$ 0.3
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	2.5	1.7	5.6	4.1
Stock Options and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	2.3	1.7	5.3	3.9
Restricted Stock Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0.2	$ 0.0	$ 0.3	$ 0.2

XML

Unaudited Condensed Statements of Consolidated Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating activities
Consolidated net income (loss)	$ (2.8)	$ 10.1
Adjustments to reconcile consolidated net income (loss) to net cash used for operating activities:
Loss from discontinued operations	0.0	0.3
Depreciation and amortization	29.7	36.4
Amortization of deferred financing fees	0.6	0.5
Share-based compensation expense	5.9	4.4
Foreign exchange loss	4.1	1.2
(Gain) loss on divestiture of Advanced Materials business	(2.0)	1.0
Deferred income tax benefit	(3.0)	(1.8)
Other non-cash items	(6.1)	3.0
Changes in operating assets and liabilities:
Accounts receivable	(5.4)	(20.3)
Inventories	(3.0)	(4.5)
Accounts payable	(16.5)	(6.1)
Other, net	(0.8)	(2.4)
Net cash provided by operating activities	0.7	21.8
Investing activities
Expenditures for property, plant and equipment	(10.6)	(10.8)
Cash received from acquisition purchase price adjustments	2.2	0.0
Proceeds from sale of property	1.2	1.0
Net cash used for investing activities	(7.2)	(9.8)
Financing activities
Payments related to VAC purchase price payable	(41.8)	0.0
Net payments on revolving credit facility	(10.1)	0.0
Dividends paid	(2.5)	(4.8)
Proceeds from exercise of stock options	7.8	0.5
Debt issuance costs	(0.1)	(0.1)
Payment related to surrendered shares	(0.5)	(0.7)
Payments for Repurchase of Common Stock	0.0	(10.0)
Net cash used for financing activities	(47.2)	(15.1)
Effect of exchange rate changes on cash	(2.1)	(0.2)
Cash and cash equivalents
Decrease from continuing operations	(55.8)	(3.3)
Discontinued operations - net cash used by operating activities	(0.1)	(0.8)
Balance at the beginning of the period	91.7	118.4
Balance at the end of the period	$ 35.8	$ 114.3

XML

Fair Value Disclosures (Details) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2015 EUR (€)	Jun. 30, 2015 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Transfer into or out of fair value measurement levels 1 and 2		$ 0		$ 0
Transfer into or out of fair value measurement level 3	$ 0	0
Long-term debt		$ 12,500,000		2,400,000
Rahu Catalytics Limited [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration based on achieving target volumes	15 years
Volume Targets [Member] | Rahu Catalytics Limited [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration amounts based on certain volume targets			€ 20.0	22,400,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				1,900,000
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				500,000
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				1,400,000
Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				1,400,000
Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				0
Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				0
Fair Value, Measurements, Recurring [Member] | Contingent Consideration [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Contingent consideration payable				1,400,000
Fair Value, Measurements, Recurring [Member] | Commodity Contract [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Commodity contract derivatives				500,000
Fair Value, Measurements, Recurring [Member] | Commodity Contract [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Commodity contract derivatives				0
Fair Value, Measurements, Recurring [Member] | Commodity Contract [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Commodity contract derivatives				500,000
Fair Value, Measurements, Recurring [Member] | Commodity Contract [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Commodity contract derivatives				$ 0

XML

Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory, Net [Abstract]

Inventories

Inventories consist of the following:

	June 30,		December 31,
	2015		2014
Raw materials and supplies	$	69.0	$	73.6
Work-in-process	115.3		118.1
Finished goods	34.5		36.7
	$	218.8	$	228.4

XML

Fair Value Disclosures (Changes in Level 3 liabilities measured at fair value on a recurring basis) (Details) - Significant Unobservable Inputs (Level 3) [Member] $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2014	$ 1.4
Accretion expense	0.1
Foreign exchange	(0.1)
Fair Value at June 30, 2015	$ 1.4

XML

Income Taxes (Tables)

6 Months Ended

Jun. 30, 2015

Income Tax Disclosure [Abstract]

Income (Loss) From Continuing Operations Before Income Tax Expense

Income (loss) from continuing operations before income tax consists of the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
United States	$	(7.0	)	$	0.6		$	(15.9	)	$	(2.3	)
Outside the United States	0.2			6.3			(6.0		)	15.8
Income (loss) from continuing operations before income tax	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Effective Income Tax Rate	(a)			25.8		%	(a)			23.3		%
(a) not meaningful

XML

Basis of Presentation

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

Principles of Consolidation — OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovative technologies to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value. The consolidated financial statements include the accounts of OM Group and its consolidated subsidiaries. We were formed in 1991 as a Delaware corporation. Intercompany accounts and transactions have been eliminated in consolidation.

Certain financial data may have been rounded. As a result of such rounding, the totals of data presented in this document may vary slightly from the actual arithmetical totals of such data.

On November 24, 2014, we completed the acquisition of Ener-Tek International, Inc., which operates under the brand name Yardney Technical Products ("Yardney"), and now operates as a part of our Battery Technologies business. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances. During the six months ended June 30, 2015, a post-closing working capital adjustment and an arbitration settlement with a former real property lessor resulted in a $2.2 million purchase price reduction, resulting in a purchase price of $22.4 million.

These Unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of our financial position at June 30, 2015 and the results of our income (loss), comprehensive income (loss) and cash flows for the six months ended June 30, 2015 and 2014 have been included. The balance sheet at December 31, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information or notes required by U.S. generally accepted accounting principles for complete financial statements. Past operating results are not necessarily indicative of the results which may occur in future periods, and the interim period results are not necessarily indicative of the results to be expected for the full year. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Pending Transaction

On May 31, 2015, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with funds managed by Apollo Global Management, LLC (“Apollo Funds”) and Platform Specialty Products Corporation (“Platform”). Under the Merger Agreement, the Company will merge with an affiliate of Apollo Funds (the “Merger”). Immediately following the Merger, Apollo Funds will sell the Company’s electronic chemicals and photomasks businesses to Platform (the “Carve-out Transaction”). As a result of the Merger, each share of the Company’s common stock issued and outstanding immediately prior to the time of the Merger will be converted into the right to receive $34.00 per share in cash without interest (the “Merger Consideration”). The transactions are expected to be completed by the end of 2015.

At the time of the Merger, each outstanding option to purchase shares of the Company’s common stock and each restricted share award will be deemed vested (at target level in the case of performance awards) and converted into the right to receive the Merger Consideration (less the exercise price in the case of options).

The Merger Agreement contains certain termination rights by the Company, Apollo Funds and Platform. These rights include the Company's acceptance of a superior proposal from an "excluded party," which is defined as any entity from whom the Company has received a takeover proposal prior to or within 35 days after the signing of the Merger Agreement, at which time the Company would be required to pay a termination fee of $18.3 million. In the event the Merger Agreement is terminated for other reasons by the Company, including acceptance of a takeover proposal submitted by a non-excluded party, it may be required to pay a termination fee of $36.6 million. If the Merger Agreement is terminated due to the failure of Apollo Funds or Platform to obtain debt financing, Apollo Funds and/or Platform, as applicable, will be required to pay the Company a reverse termination fee equal to $62.7 million. If the Merger Agreement is terminated due to the failure to obtain certain regulatory approvals related to the Carve-out Transaction, Platform may be required to reimburse the Company and Apollo Funds for their respective fees and expenses in an aggregate amount up to $11.3 million.

Consummation of the Merger is conditional upon customary closing conditions, including, among others, (1) adoption of the Merger Agreement by the stockholders of the Company at a meeting currently scheduled for August 10, 2015, and (2) expiration or termination of any applicable waiting periods under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 ("HSR Act") and other consents and approvals required under non-US applicable antitrust laws. On June 19, 2015 and on June 26, 2015, the FTC granted early termination of the waiting period under the HSR Act with respect to the Merger and the Carve-out Transaction, respectively. Several approvals from non-US regulatory parties are still outstanding. The Company has agreed to various covenants in the Merger Agreement, including, among other things, forgoing payment of its regular dividend during the period between execution of the Merger Agreement and the closing of the Merger.

During the three and six months ended June 30, 2015, we incurred $6.4 million and $7.8 million, respectively, of expenses related to the Merger, which are included within Selling, general and administrative expenses in the Statement of Consolidated Operations.

For additional information about the Merger, please see our current reports on Form 8-K, filed with the SEC on June 1, 2015, and the Merger Agreement itself, which is attached as Exhibit 2.1 thereto, as well as the definitive proxy statement filed with the SEC on July 10, 2015 and our other current reports on Form 8-K filed with the SEC related to the Merger.

XML

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$ 2,400	$ 2,500
Preferred Stock, Par or Stated Value Per Share (in usd per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized (in shares)	2,000,000	2,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in usd per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	90,000,000	90,000,000
Common Stock, Shares, Issued (in shares)	32,742,185	32,408,222
Treasury Stock, Shares (in shares)	2,151,866	2,136,116

XML

Earnings (Loss) Per Share

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Earnings (Loss) Per Share

Earnings (Loss) Per Share

The following table sets forth the computation of basic and dilutive income (loss) per common share from continuing operations attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Income (loss) from continuing operations, net of tax	$	8.4	$	5.1	$	(2.8	)	$	10.4
Earnings (loss) per common share - basic:
Income (loss) from continuing operations	$	0.28	$	0.16	$	(0.09	)	$	0.33
Earnings (loss) per common share - assuming dilution:
Income (loss) from continuing operations	$	0.27	$	0.16	$	(0.09	)	$	0.33
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

The following table sets forth the computation of basic and diluted net income (loss) per common share attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Net income (loss)	$	8.3	$	4.8	$	(2.8	)	$	10.1
Earnings (loss) per common share - basic:
Net income (loss)	$	0.28	$	0.15	$	(0.09	)	$	0.32
Earnings per common share - assuming dilution:
Net income (loss)	$	0.27	$	0.15	$	(0.09	)	$	0.31
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

We use the treasury stock method to calculate the effect of outstanding share-based compensation awards, which requires us to compute total employee proceeds as the sum of (a) the amount the employee must pay upon exercise of the award, (b) the amount of unearned share-based compensation costs attributed to future services and (c) the amount of tax benefits, if any, that would be credited to additional paid-in capital assuming exercise of the award. Shares, under share-based compensation awards, for which the total employee proceeds exceed the average market price over the applicable period have an anti-dilutive effect on earnings per share, and accordingly, are excluded from the calculation of diluted earnings per share.

In each of the three and six months ended June 30, 2015 and 2014, stock options to purchase 0.1 million shares were excluded from the calculation of dilutive earnings per share because the options’ exercise prices were greater than the average market price of the common shares and, therefore, the effect would have been anti-dilutive.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 04, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	OM GROUP INC
Entity Central Index Key	0000899723
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		30,600,771

XML

Share-Based Compensation

6 Months Ended

Jun. 30, 2015

Share-based Compensation [Abstract]

Share-Based Compensation

Share-Based Compensation

Set forth below is a summary of share-based compensation expense for option grants, restricted stock awards and restricted stock unit awards included as a component of Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Stock options and restricted stock awards	$	2.3	$	1.7	$	5.3	$	3.9
Restricted stock unit awards	0.2		—		0.3		0.2
Share-based compensation expense - employees	$	2.5	$	1.7	$	5.6	$	4.1
Share-based compensation expense - non-employee directors	$	0.1	$	0.1	$	0.3	$	0.3

No tax benefit for share-based compensation was realized during the first three and six months ended June 30, 2015 and 2014 as a result of a valuation allowance against the deferred tax assets.

At June 30, 2015, there was $10.4 million of unrecognized compensation expense related to unvested share-based awards. That cost is expected to be recognized as follows: $3.5 million in the remaining six months of 2015, $4.3 million in 2016, and $2.6 million in 2017 as a component of Selling, general and administrative expenses. Unearned compensation expense is recognized over the vesting period for the particular grant. Total unrecognized compensation cost will be adjusted for future changes in actual and estimated forfeitures, updated vesting assumptions for performance awards, and fluctuations in the fair value of restricted stock unit awards.

Non-employee directors of the Company are paid a portion of their annual retainer in unrestricted shares of common stock. For purposes of determining the number of shares of common stock to be issued subsequent to May 13, 2014, the 2014 Equity and Incentive Compensation Plan (the "2014 Plan") provides that shares are to be valued at the closing sale price of the Company’s common stock on the New York Stock Exchange ("NYSE") on the last trading date of the quarter. Pursuant to the 2014 Plan, we issued 3,744 and 8,147 shares in the three and six months ended June 30, 2015. For purposes of determining the number of shares of common stock to be issued prior to May 13, 2014, the 2007 Incentive Compensation Plan (the "2007 Plan") provides that shares are to be valued at the average of the high and low sale price of the Company’s common stock on the NYSE on the last trading date of the quarter. Pursuant to the 2007 Plan, we issued 3,976 and 7,084 shares in the three and six months ended June 30, 2014 to non-employee directors.

XML

Unaudited Condensed Statements of Consolidated Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 228.4	$ 297.5	$ 476.2	$ 559.2
Cost of goods sold	174.6	234.4	372.1	434.2
Gross profit	53.8	63.1	104.1	125.0
Selling, general and administrative expenses	54.5	53.2	109.4	106.6
Operating profit (loss)	(0.7)	9.9	(5.3)	18.4
Other income (expense):
Interest expense	(0.6)	(0.6)	(1.2)	(1.3)
Foreign exchange gain (loss)	0.3	(0.9)	(4.1)	(1.2)
Gain (loss) on divestiture of Advanced Materials business	0.0	(0.8)	2.0	(1.0)
Charges associated with VAC arbitration conclusion	0.0	0.0	(10.4)	0.0
Other income (expense), net	(5.8)	(0.7)	(2.9)	(1.4)
Income (loss) from continuing operations before income tax	(6.8)	6.9	(21.9)	13.5
Income tax (benefit) expense	(15.2)	1.8	(19.1)	3.1
Income (loss) from continuing operations, net of tax	8.4	5.1	(2.8)	10.4
Loss from discontinued operations, net of tax	(0.1)	(0.3)	0.0	(0.3)
Consolidated net income (loss)	$ 8.3	$ 4.8	$ (2.8)	$ 10.1
Earnings (loss) per common share — basic:
Income (loss) from continuing operations (in dollars per share)	$ 0.28	$ 0.16	$ (0.09)	$ 0.33
Income (loss) from discontinued operations (in dollars per share)	0.00	(0.01)	0.00	(0.01)
Net income (loss) (in dollars per share)	0.28	0.15	(0.09)	0.32
Earnings (loss) per common share — assuming dilution:
Income (loss) from continuing operations (in dollars per share)	0.27	0.16	(0.09)	0.33
Income (loss) from discontinued operations (in dollars per share)	0.00	(0.01)	0.00	(0.02)
Net income (loss) (in dollars per share)	$ 0.27	$ 0.15	$ (0.09)	$ 0.31
Weighted average shares outstanding
Basic (in shares)	30.4	31.5	30.4	31.5
Assuming dilution (in shares)	30.7	31.8	30.4	31.9
Dividends declared per common share (in dollars per share)	$ 0	$ 0.075	$ 0.0825	$ 0.15

XML

Derivative Instruments

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedges, Assets [Abstract]

Derivative Instruments

Derivative Instruments

Commodity Price Risk

In March 2015, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2015 and 2016 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts have beendesignated as cash flow hedges for accounting purposes and the liability had a fair value of$0.5 millionatJune 30, 2015.

In May 2013, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2013 and 2014 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts weredesignated as cash flow hedges for accounting purposes and were settled during the second quarter 2014.

There wasnohedge ineffectiveness in the six months endedJune 30, 2015 or 2014 for these hedges.

XML

Debt

6 Months Ended

Jun. 30, 2015

Debt Instruments [Abstract]

Debt

Debt

On September 4, 2013, we entered into a five-year Senior Secured Revolving Credit Facility (the "Facility”), and terminated our previous credit facility dated August 2, 2011 that was scheduled to expire in August 2016. The Facility provides for $350 million of revolving borrowing capacity and includes an expansion option of up to an additional $150 million, subject to certain conditions. The borrowers under the Facility are the Company, Harko C.V. (“Harko”), a limited partnership organized under the laws of the Netherlands, and VAC Germany GmbH (“VAC”), a limited liability company under the laws of Germany. Harko and VAC are wholly-owned subsidiaries of the Company. The Facility matures on September 4, 2018.

The obligations of the Company under the Facility are guaranteed by certain of the Company’s material U.S. subsidiaries. The obligations of Harko and VAC under the Facility are guaranteed by the Company and certain of the Company’s material subsidiaries, subject to certain exceptions including financial assistance limitations in certain foreign jurisdictions. In addition, the obligations of the Company under the Facility are secured by a first priority security interest in substantially all of the existing and future personal property of the Company and certain of the Company’s material U.S. subsidiaries, including 65% of the voting capital stock of certain of the Company’s direct foreign subsidiaries. The obligations of Harko and VAC under the Facility are secured by a first priority security interest in certain of the existing and future personal property of Harko, VAC and certain of the Company’s subsidiaries and a 100% pledge of the voting capital stock of certain of the Company’s subsidiaries, subject to certain exceptions, including financial assistance limitations in certain foreign jurisdictions.

The interest rates applicable to loans under the Facility will be at our option and equal to either a base rate or a LIBOR rate, in each case plus an applicable margin percentage. The base rate will be the highest of (i) the federal funds rate plus 0.50%, (ii) the prime rate or (iii) the LIBOR rate with a maturity of one month plus 1.00%. The applicable margin percentage is based on the leverage ratio of the Company. The range of the applicable margin percentage is 1.125% to 2.000% in the case of LIBOR advances and 0.125% to 1.000% in the case of base rate advances.

The Facility contains customary representations and warranties and certain covenants that limit the ability of the Company and its restricted subsidiaries to, among other things: (i) incur or guarantee additional indebtedness; (ii) redeem, repurchase or pay distributions on capital stock or redeem or repurchase subordinated debt; (iii) make investments; (iv) sell assets; (v) enter into agreements that restrict distributions or other payments from restricted subsidiaries to the Company; (vi) incur or suffer to exist liens securing indebtedness; (vii) consolidate, merge or transfer all or substantially all of their assets; and (viii) engage in transactions with affiliates. In addition, the Facility contains financial covenants that limit capital expenditures in any fiscal year and that measure (i) the ratio of the Company’s total funded indebtedness net of certain cash to the amount of the Company’s consolidated EBITDA and (ii) the ratio of the amount of the Company’s consolidated EBITDA to the Company’s cash interest expense, as defined in the agreement governing the Facility.

As of June 30, 2015, we had $2.4 million outstanding under the Facility and were in compliance with all Facility covenants.

XML

Fair Value Disclosures (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Assets And Liabilities Accounted For At Fair Value On A Recurring Basis

The following table shows our assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	June 30, 2015		(Level 1)		(Level 2)		(Level 3)
Liabilities:
Contingent consideration payable	$	1.4	$	—	$	—	$	1.4
Commodity contract derivatives	0.5		—		0.5		—
	$	1.9	$	—	$	0.5	$	1.4

Changes In Level 3 Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes changes in Level 3 liabilities measured at fair value on a recurring basis:

	Contingent Consideration
Fair Value at December 31, 2014	$	1.4
Accretion expense	0.1
Foreign exchange	(0.1		)
Fair Value at June 30, 2015	$	1.4

XML

Commitments and Contingencies

6 Months Ended

Jun. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Following the announcement of the Merger and Carve-Out Transaction described in Note 1, six putative class action lawsuits were filed in the Court of Chancery of the State of Delaware.  The actions subsequently were consolidated, and the case is proceeding as In re OM Group, Inc. Stockholders Litigation, C.A. No. 11216-VCN.  The operative complaint, originally filed in one of the constituent actions (City of Sarasota Firefighters’ Pension Fund v. Apollo Global Management, LLC, et al., C.A. No. 11249) generally alleges, among other things, that the directors of the Company breached their fiduciary duties to OM Group stockholders by engaging in a flawed sales process, agreeing to a price that does not adequately compensate OM Group stockholders, agreeing to certain unfair deal protection terms and failing to disclose certain information to investors.  Following expedited discovery, plaintiffs determined not to move for a preliminary injunction.  We believe that the allegations lack merit and we intend to defend the lawsuit vigorously.

In July 2015, we substantially completed negotiations with the employee works council and union in Germany with respect to competitive repositioning and cost optimization in our Magnetic Technologies business. At this time, implementation plans have not been completed, and as such, potential costs cannot be determined.

We have potential contingent liabilities with respect to environmental matters related to our former operations in Brazil which were sold in 2003. Environmental cost-sharing arrangements are in place between the original owner and operator of these operations and between the Company and the subsequent purchaser of these operations. We have reviewed the limited information made available to us on the environmental conditions and are awaiting more detailed information from the purchaser. We cannot currently evaluate whether or not, or to what extent, we will be responsible for any remediation costs until more detailed information is received and validated.

From time to time, we are subject to various legal and regulatory proceedings, claims and assessments that arise in the normal course of business. The ultimate resolution of such proceedings, claims and assessments is inherently unpredictable and, as a result, our estimates of liability, if any, are subject to change and actual results may materially differ from such estimates. Our estimate of any costs to be incurred as a result of these proceedings, claims and assessments are accrued when the liability is considered probable and the amount can be reasonably estimated. We believe the amount of any current potential liability with respect to legal and regulatory proceedings, claims and assessments will not have a material adverse effect upon our financial condition, results of operations, or cash flows.

XML

Defined Benefit Plans

6 Months Ended

Jun. 30, 2015

Pension and Other Postretirement Benefit Expense [Abstract]

Defined Benefit Plans

Defined Benefit Plans

At June 30, 2015 and December 31, 2014, we had pension liabilities of $237.2 million and $253.1 million, respectively, the majority of which were assumed in the 2011 VAC acquisition and the 2010 EaglePicher Technologies acquisition.

Set forth below is a detail of the net periodic pension expense for the U.S. defined benefit plans:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	0.3		$	0.3		$	0.6		$	0.6
Interest cost	1.9			2.3			3.7			4.7
Amortization of unrecognized net loss	(0.2		)	0.1			0.2			0.2
Expected return on plan assets	(2.3		)	(2.6		)	(4.5		)	(5.1		)
Total expense	$	(0.3	)	$	0.1		$	—		$	0.4

Set forth below is a detail of the net periodic pension expense for the VAC defined benefit plans:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Service cost	$	1.4	$	1.7	$	2.9	$	3.4
Interest cost	0.8		1.5		1.6		3.1
Amortization of unrecognized net loss	0.6		0.3		1.2		0.5
Total expense	$	2.8	$	3.5	$	5.7	$	7.0

XML

Fair Value Disclosures

6 Months Ended

Jun. 30, 2015

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Fair Value Disclosures

Fair Value Disclosures

The following table shows our assets and liabilities accounted for at fair value on a recurring basis:

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	June 30, 2015		(Level 1)		(Level 2)		(Level 3)
Liabilities:
Contingent consideration payable	$	1.4	$	—	$	—	$	1.4
Commodity contract derivatives	0.5		—		0.5		—
	$	1.9	$	—	$	0.5	$	1.4

Our valuation techniques and Level 3 inputs used to estimate the fair value of the contingent consideration payable in connection with our acquisition of Rahu Catalytics Limited ("Rahu") are described below. There were no transfers into or out of Levels 1, 2 or 3 in 2014 or 2015.

The following table summarizes changes in Level 3 liabilities measured at fair value on a recurring basis:

	Contingent Consideration
Fair Value at December 31, 2014	$	1.4
Accretion expense	0.1
Foreign exchange	(0.1		)
Fair Value at June 30, 2015	$	1.4

We acquired Rahu on December 22, 2011. The purchase price included contingent consideration of up to an additional €20.0 million ($22.4 million at June 30, 2015) based on achieving certain volume targets over a fifteen-year period ending on December 31, 2026. We estimated the fair value of the contingent consideration using probability-weighted expected future cash flows and applied a discount rate that appropriately captures a market participant's view of the risk associated with the contingent consideration. Contingent consideration is included in Other non-current liabilities in the Unaudited Condensed Consolidated Balance Sheet. The valuation of the contingent consideration is classified utilizing Level 3 inputs consistent with assumptions which would be made by other market participants. There are many factors that could impact the likelihood that we will pay the contingent consideration and therefore its value, including overall economic conditions and our ability to drive sales volumes as planned. A change in a market participant view of risks could also impact the value of the contingent consideration.

We also hold financial instruments consisting of cash, accounts receivable, and accounts payable. The carrying amounts of cash, accounts receivable, and accounts payable approximate fair value due to the short-term maturities of these instruments. The Facility had a carrying value of $2.4 million and $12.5 million at June 30, 2015 and December 31, 2014, respectively, and is the approximate fair value due to the the short-term nature of the instrument. Derivative instruments are recorded at fair value and immaterial as of June 30, 2015.

XML

Income Taxes

6 Months Ended

Jun. 30, 2015

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Our major tax jurisdictions include the U.S. and Germany. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2006. VAC's German tax returns have been audited through 2005. We are indemnified, subject to certain limitations, for any pre-acquisition income tax liabilities of VAC. German tax authorities are currently examining VAC's income tax returns for the years 2006-2011.

As required under ASC 740, our interim income tax provision is based on the application of an estimated annual effective income tax rate applied to year-to-date ordinary income from continuing operations before income tax expense. In determining the estimated annual effective income tax rate, we analyze various factors, including forecasts of projected annual earnings (including specific subsidiaries projected to have pretax income and pretax losses), taxing jurisdictions in which the earnings will be generated, our ability to use tax credits and net operating loss carryforwards, and available tax planning alternatives. We evaluate the estimated annual effective income tax rate on a quarterly basis based on current and forecasted earnings by tax jurisdiction, including changes in the Company's structure. The estimated annual effective income tax rate may be significantly impacted by changes to the mix of forecasted earnings by tax jurisdiction. The tax effects of adjustments to the estimated annual effective income tax rate are recorded in the period such estimates are revised. The tax effects of discrete items, including the effect of changes in tax laws, tax rates, certain circumstances with respect to valuation allowances or other unusual or non-recurring items, are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than included in the estimated annual effective income tax rate. The Company recorded a decrease in uncertain tax positions for the three and six months ended June 30, 2015 of $5.0 million as a result of an effective settlement at VAC, which is included as an income tax benefit for the period. A corresponding write-off of a $5.0 million long-term indemnification receivable was recorded in Other income (expense), net for the three and six months ended June 30, 2015, resulting in no impact on net income or earnings per share.

Income (loss) from continuing operations before income tax consists of the following:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
United States	$	(7.0	)	$	0.6		$	(15.9	)	$	(2.3	)
Outside the United States	0.2			6.3			(6.0		)	15.8
Income (loss) from continuing operations before income tax	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Effective Income Tax Rate	(a)			25.8		%	(a)			23.3		%
(a) not meaningful

The effective income tax rates for the three months and six months ended June 30, 2015 were impacted by special charges that have no tax benefits, including expenses related to the Merger described in Note 1 and the write-off of the tax indemnification receivable at VAC discussed above, as well as certain tax discrete items, including the decrease of uncertain tax positions discussed above. Prior year income tax rate for the three and six months ended June 30, 2014 are lower than the U.S. statutory tax rate primarily due to income earned in tax jurisdictions with lower statutory rates than the U.S. (primarily Germany, Malaysia and Taiwan) and our financing structure, partially offset by losses in certain jurisdictions (including the U.S.) with no corresponding tax benefit.

XML

Accumulated Other Comprehensive Loss

6 Months Ended

Jun. 30, 2015

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Income Loss

Accumulated Other Comprehensive Loss

(a) Changes in Accumulated Other Comprehensive Loss by Component

	Foreign Currency Translation			Unrealized Loss on Cash Flow Hedging Derivatives, net of tax			Pension and Post-Retirement Obligation, net of tax		Accumulated Other Comprehensive Loss
Beginning Balance at January 1, 2015	$	(87.2	)	—			(70.6	)	(157.8		)
Other comprehensive loss before reclassifications	(25.3		)	(0.4		)	—		(25.7		)
Amounts reclassified from accumulated other comprehensive loss	(3.5		)	—			1.6		(1.9		)
Net current-period other comprehensive income (loss)	(28.8		)	(0.4		)	1.6		(27.6		)
Ending balance at June 30, 2015	$	(116.0	)	$	(0.4	)	(69.0	)	$	(185.4	)

(b) Reclassifications out of Accumulated Other Comprehensive Loss

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss			Affected Line Item in the Statement Where Net Income is Presented
Foreign currency translation	$	(3.5	)	Other income (expense), net
Pension and post-retirement obligation	$	1.6		Selling, general and administrative expenses

XML

Derivative Instruments (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments and Hedges, Assets [Abstract]
Derivative fair value	$ 500,000
Hedge ineffectiveness recorded to income	$ 0	$ 0

XML

Basis of Presentation (Policies)

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Principles of Consolidation

Principles of Consolidation — OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovative technologies to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value. The consolidated financial statements include the accounts of OM Group and its consolidated subsidiaries. We were formed in 1991 as a Delaware corporation. Intercompany accounts and transactions have been eliminated in consolidation.

Recently Issued Accounting Guidance

Recently Issued Accounting Guidance

In April 2015, the Financial Accounting Standards Board (the "FASB") issued ASU No. 2015-03, “Interest - Imputation of Interest” (“ASU 2015-03”). The update amends the guidance for presenting deferred debt costs on the balance sheet and requires that the costs are recorded as a deduction from the carrying amount of debt. The amendments are effective for reporting periods beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact the adoption of ASU 2015-03 and believe the impact will not be material to our financial position.

In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The update amends the guidance for revenue recognition to replace numerous, industry-specific requirements and converges areas under this topic with those of the International Financial Reporting Standards. On July 9, 2015 the FASB formally deferred the effective date one year, to reporting periods beginning after December 15, 2017. Early adoption is now allowed, but only after the original effective date of reporting periods beginning after December 15, 2016. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact the adoption of ASU 2014-09 may have on our results of operations or financial position.

XML

Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2015

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in Accumulated Other Comprehensive Loss by Component

	Foreign Currency Translation			Unrealized Loss on Cash Flow Hedging Derivatives, net of tax			Pension and Post-Retirement Obligation, net of tax		Accumulated Other Comprehensive Loss
Beginning Balance at January 1, 2015	$	(87.2	)	—			(70.6	)	(157.8		)
Other comprehensive loss before reclassifications	(25.3		)	(0.4		)	—		(25.7		)
Amounts reclassified from accumulated other comprehensive loss	(3.5		)	—			1.6		(1.9		)
Net current-period other comprehensive income (loss)	(28.8		)	(0.4		)	1.6		(27.6		)
Ending balance at June 30, 2015	$	(116.0	)	$	(0.4	)	(69.0	)	$	(185.4	)

Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

Reclassifications out of Accumulated Other Comprehensive Loss

Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss			Affected Line Item in the Statement Where Net Income is Presented
Foreign currency translation	$	(3.5	)	Other income (expense), net
Pension and post-retirement obligation	$	1.6		Selling, general and administrative expenses

XML

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015			$ (157.8)
Other comprehensive loss before reclassifications			(25.7)
Amounts reclassified from accumulated other comprehensive loss			(1.9)
Net change in accumulated other comprehensive loss	$ 19.8	$ (1.1)	(27.6)	$ (2.8)
Ending balance at June 30, 2015	(185.4)		(185.4)
Foreign currency translation	0.3	$ (0.9)	(4.1)	$ (1.2)
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015			(87.2)
Other comprehensive loss before reclassifications			(25.3)
Amounts reclassified from accumulated other comprehensive loss			(3.5)
Net change in accumulated other comprehensive loss			(28.8)
Ending balance at June 30, 2015	(116.0)		(116.0)
Foreign Currency Translation [Member] | Amount of Reclassified from Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Foreign currency translation			(3.5)
Unrealized Loss on Cash Flow Hedging Derivatives, net of tax [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015			0.0
Other comprehensive loss before reclassifications			(0.4)
Amounts reclassified from accumulated other comprehensive loss			0.0
Net change in accumulated other comprehensive loss			(0.4)
Ending balance at June 30, 2015	(0.4)		(0.4)
Pension and Post-Retirement Obligation, net of tax [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015			(70.6)
Other comprehensive loss before reclassifications			0.0
Amounts reclassified from accumulated other comprehensive loss			1.6
Net change in accumulated other comprehensive loss			1.6
Ending balance at June 30, 2015	$ (69.0)		$ (69.0)

XML

Unaudited Statements of Consolidated Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Consolidated net income (loss)	$ 8.3	$ 4.8	$ (2.8)	$ 10.1
Foreign currency translation adjustments	19.2	(1.3)	(25.3)	(3.2)
Reclassification of foreign currency translation adjustment related to the sale of property into earnings	0.0	0.0	(3.5)	0.0
Reclassification of hedging activities into earnings, net of tax	0.0	0.1	0.0	0.2
Unrealized loss on cash flow hedging derivatives, net of tax	(0.2)	0.0	(0.4)	0.0
Pension adjustment, net of tax	0.8	0.1	1.6	0.2
Net change in accumulated other comprehensive loss	19.8	(1.1)	(27.6)	(2.8)
Comprehensive income (loss)	$ 28.1	$ 3.7	$ (30.4)	$ 7.3

XML

Acquisitions and Divestitures

6 Months Ended

Jun. 30, 2015

Business Combinations [Abstract]

Acquisitions and Divestitures

Acquisitions and Divestitures

(a) Acquisitions

Yardney

On November 24, 2014. we completed the acquisition of Yardney. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances at the time of the acquisition. The balance sheet at the acquisition date was based on preliminary estimated purchase accounting. In the second quarter ended June 30, 2015, we finalized this accounting. During the six months ended June 30, 2015 we agreed the closing working capital with the seller and finalized an arbitration settlement with a former real property lessor which resulted in post-closing purchase price reductions of $2.2 million. The purchase price of $22.4 million, resulted in an allocation of $12.0 million of net assets, including $6.5 million of identifiable intangibles. The remaining $10.4 million was recorded as goodwill, which is not deductible for tax purposes.

VAC

Our Magnetic Technologies segment consists of VAC Holding GmbH ("VAC"), which we acquired in 2011. The total purchase price of $812.2 million included cash consideration of $686.2 million, withheld consideration of $86.3 million, and the issuance of Company shares valued at $39.7 million. The withheld consideration relates to potential indemnification claims made by OM Group and accepted by the seller, if any, within two years of the closing date of the acquisition with certain exceptions related to tax matters. In August 2013, we remitted a payment of $23.0 million to the seller of VAC and entered into arbitration with the seller to determine the outcome of the remaining withheld consideration. In December 2014, we withdrew one claim related to certain potential tax obligations and remitted a payment of $16.2 million to the seller of VAC and charged certain tax assessments related to pre-acquisition tax years of $1.6 million against the outstanding withholding liability. In March 2015, the arbitration decision was issued addressing the remaining declaratory actions we had undertaken in support of our indemnification claims and we remitted a payment of $52.5 million to the seller of VAC. The payment consisted of the remaining non-tax related withholding liability of $41.8 million and $10.7 million in charges associated with the arbitration conclusion, which included interest charges and legal fee reimbursement. The remainder of the purchase price of VAC payable to the seller of $4.1 million is tax related and will be resolved when all open tax examinations are completed by the tax authorities in the various jurisdictions, which we expect to occur in 2015. Due to the length of time over which these withholding liability payments are being made, these payments are classified as financing activities within the Unaudited Condensed Consolidated Statement of Cash Flows.

(b) Divestitures

Advanced Materials

On March 29, 2013, we completed the divestiture of our cobalt-based business. The transaction comprised the sale of the downstream portion of the business (including our cobalt refinery assets in Kokkola, Finland), and the transfer of our equity interests in the DRC-based joint venture, known as GTL. The sale agreement for the downstream portion of the business provides for potential future additional cash consideration of up to $110.0 million based on the business achieving certain revenue targets over a period of three years. Using our projected trends of cobalt prices and volumes, it is not probable that the business will meet the revenue targets, and no value was assigned to the potential future cash consideration while calculating the loss on the divestiture at December 31, 2014 and June 30, 2015.

Following the sale, to assist in the transition of the downstream business, we entered into an agreement with the buyer to act as intermediary in a cobalt feed supply agreement between GTL and the buyer, in back-to-back arrangements for a period of two years. The supply agreement terminated as of March 31, 2015 and all related activity under the agreement was completed in the second quarter of 2015, including the payment of a $1.0 million performance bonus to us.

XML

Earnings (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Income (Loss) Per Common Share From Continuing Operations

The following table sets forth the computation of basic and dilutive income (loss) per common share from continuing operations attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Income (loss) from continuing operations, net of tax	$	8.4	$	5.1	$	(2.8	)	$	10.4
Earnings (loss) per common share - basic:
Income (loss) from continuing operations	$	0.28	$	0.16	$	(0.09	)	$	0.33
Earnings (loss) per common share - assuming dilution:
Income (loss) from continuing operations	$	0.27	$	0.16	$	(0.09	)	$	0.33
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

Computation Of Basic And Diluted Net Income (Loss) Per Common Share

The following table sets forth the computation of basic and diluted net income (loss) per common share attributable to OM Group, Inc. common stockholders:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015			2014
Amounts attributable to OM Group, Inc. common stockholders:
Net income (loss)	$	8.3	$	4.8	$	(2.8	)	$	10.1
Earnings (loss) per common share - basic:
Net income (loss)	$	0.28	$	0.15	$	(0.09	)	$	0.32
Earnings per common share - assuming dilution:
Net income (loss)	$	0.27	$	0.15	$	(0.09	)	$	0.31
Weighted average shares outstanding — basic	30.4		31.5		30.4			31.5
Dilutive effect of stock options and restricted stock	0.3		0.3		—			0.4
Weighted average shares outstanding — assuming dilution	30.7		31.8		30.4			31.9

XML

Income Taxes (Income (Loss) From Continuing Operations Before Income Tax Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income (loss) from continuing operations before income tax expense:
United States	$ (7.0)	$ 0.6	$ (15.9)	$ (2.3)
Outside the United States	0.2	6.3	(6.0)	15.8
Income (loss) from continuing operations before income tax	$ (6.8)	$ 6.9	$ (21.9)	$ 13.5
Effective Income Tax Rate		25.80%		23.30%

XML

Reportable Segments

6 Months Ended

Jun. 30, 2015

Segment Reporting Information, Profit (Loss) [Abstract]

Reportable Segments

Reportable Segments

We determine our segments based on how the chief operating decision maker makes decisions about allocating resources to segments and measuring their performance. We operate and report our results in four operating segments: Magnetic Technologies, Battery Technologies, Specialty Chemicals and Advanced Materials. Intersegment transactions are immaterial and generally recognized based on current market prices and are eliminated in consolidation. Corporate is comprised of general and administrative expenses not allocated to the operating segments.

The following table reflects the results of our reportable segments:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net sales
Magnetic Technologies	$	109.9		$	130.9		$	214.2		$	260.1
Battery Technologies	42.7			41.0			82.4			81.5
Specialty Chemicals	74.2			81.9			149.3			158.8
Advanced Materials	1.6			43.7			30.3			58.8
	$	228.4		$	297.5		$	476.2		$	559.2
Operating profit (loss)
Magnetic Technologies (a)	$	0.5		$	3.2		$	(0.1	)	$	8.9
Battery Technologies (b) (c)	5.2			8.1			8.2			14.5
Specialty Chemicals (a) (d)	7.8			8.5			14.1			15.9
Advanced Materials	0.5			(2.5		)	(0.3		)	(3.5		)
Corporate (a) (e)	(14.7		)	(7.4		)	(27.2		)	(17.4		)
	$	(0.7	)	$	9.9		$	(5.3	)	$	18.4
Interest expense	$	(0.6	)	$	(0.6	)	$	(1.2	)	$	(1.3	)
Foreign exchange gain (loss)	0.3			(0.9		)	(4.1		)	(1.2		)
Gain (loss) on divestiture of Advanced Materials business	—			(0.8		)	2.0			(1.0		)
Charges associated with VAC arbitration conclusion	—			—			(10.4		)	—
Other income (expense), net	(5.8		)	(0.7		)	(2.9		)	(1.4		)
Income (loss) from continuing operations before income taxes	$	(6.8	)	$	6.9		$	(21.9	)	$	13.5
Expenditures for property, plant & equipment
Magnetic Technologies	$	3.8		$	6.0		$	7.5		$	7.7
Battery Technologies	0.8			0.5			1.4			1.4
Specialty Chemicals	1.3			1.0			1.7			1.5
Corporate	—			0.1			—			0.2
	$	5.9		$	7.6		$	10.6		$	10.8
Depreciation and amortization
Magnetic Technologies	$	8.4		$	11.9		$	17.0		$	23.7
Battery Technologies	2.9			2.6			5.9			5.1
Specialty Chemicals	3.3			3.5			6.5			7.1
Corporate	0.2			0.3			0.3			0.5
	$	14.8		$	18.3		$	29.7		$	36.4

(a) The three and six months ended June 30, 2015 included costs related to enterprise initiatives, including fees related to a proxy contest and competitive repositioning and cost optimization opportunities announced on February 18, 2015 of $0.8 million and $1.4 million in Magnetic Technologies, $1.2 million and $2.1 million in Specialty Chemicals, and $0.3 million and $0.8 million in Corporate, respectively. Certain of these opportunities are subject to ongoing negotiations with employee works councils and unions.

(b) The six months ended June 30, 2015 includes costs related to inventory purchase accounting step-up charges of $1.0 million related to the Yardney acquisition in Battery Technologies.

(c) In the fourth quarter of 2014, Battery Technologies entered into a research and development ("R&D") contract with the U.S. Government. The contract is a “best efforts” cost-sharing agreement and calls for Battery Technologies to develop a production line for lithium-ion batteries from October 2014 through June 2017. The total expected costs to build the production line are approximately $29.0 million, a significant majority of which is expected to be reimbursed by the U.S. Government under the terms of the contract. During the three and six months ended June 30, 2015, Battery Technologies incurred $1.2 million and $2.6 million of expenses and requested reimbursement for $1.1 million and $2.4 million of these expenses, which are recorded net within Selling, general and administrative expenses.

(d) The three and six months ended June 30, 2014 included costs related to cost reduction initiatives of $0.4 million in Specialty Chemicals.

(e) The three and six months ended June 30, 2015 included fees related to the Merger of $6.4 million and $7.8 million in Corporate.