Exhibit 99.1

Altra Reports First-Quarter 2017 Results,

Delivers record financial results and raises guidance for full year 2017

BRAINTREE, Mass., April 28, 2017 - Altra Industrial Motion Corp. (Nasdaq: AIMC), a global manufacturer and marketer of electromechanical power transmission and motion control products, today announced unaudited financial results for the first quarter ended March 31, 2017.

Financial Highlights

Management Comments

Exhibit 99.1

“We began 2017 with a strong first quarter in which the progress we made on our key strategic initiatives dovetailed with a modest improvement in certain of our more challenged end markets,” said Carl Christenson, Altra’s Chairman and CEO. “On the top line, we realized 1.6% organic growth – the largest increase in 9 quarters – and a 19% overall increase, including the impact of the Stromag acquisition and the effect of changes in foreign exchange rates. Our bottom line outpaced expectations, as we drove a 6% increase in GAAP EPS and a 39% increase in recurring EPS.”

“Over the past two years, while several of our end markets were particularly slow, we were able to make substantial progress on our consolidation, supply chain and operational excellence initiatives. Our first quarter results reflect outstanding operating leverage now that some of these markets have started to rebound,” Christenson said. “Provided these markets continue to improve, we are confident the improvements in our cost structure we achieved during the past two years will have a significant positive effect on our profitability.”

“We are very pleased with the initial results of our recently acquired Stromag business, which we closed on December 30, 2016. We continue to be encouraged by the prospects of the Stromag acquisition and the synergies we expect to achieve” added Christenson. “The integration process is proceeding very well. We have already moved the Stromag production operations from one of the seller’s US facilities, a facility in China and a facility in Brazil to existing Altra facilities. In addition, we are aggressively ramping up cross-selling activities and we are very pleased with the financial performance of the business in the first quarter.”  

Business Outlook

“We accomplished a tremendous amount of work on our strategic initiatives in a relatively short period of time, and we now have the opportunity to capitalize on what appears to be the beginnings of an upturn in certain key end markets. Although we expect sales to these end markets to increase gradually, it appears we are finally coming off the bottom. At the same time, there remains much uncertainty so we remain cautious and will manage our business accordingly. Still, the success of our initiatives should enable us to enhance margins and accelerate profitability as our markets improve.”    

Altra is raising its guidance for full year 2017, given that the Company’s first-quarter performance exceeded its expectations and it is seeing improvement in certain of its end markets. Altra expects full-year 2017 sales in the range of $840 to $855 million, GAAP diluted EPS in the range of $1.70 to $1.80, and non-GAAP diluted EPS guidance in the range of $1.83 to $1.93. The Company expects its tax rate for the full year to be approximately 29% to 31% before discrete items. Altra expects capital expenditures in the range of $25 to $30 million and depreciation and amortization in the range of $35 to $37 million. *

Exhibit 99.1

Conference Call

The Company will conduct an investor conference call to discuss its unaudited first-quarter 2017 financial results today, April 28, at 10:00 a.m. ET. The public is invited to listen to the conference call by dialing (877) 407-8293 domestically or (201) 689-8349 for international access. A live webcast of the call will be available in the "Investor Relations" section of www.altramotion.com. Individuals may download charts that will be used during the call at www.altramotion.com under presentations in the Investor Relations section. The charts will be available after earnings are released. A replay of the recorded conference call will be available at the conclusion of the call through midnight on May 12, 2017. To listen to the replay, dial (877) 660-6853 domestically or (201) 612-7415 for international access (conference ID #13659788). A webcast replay also will be available.

Exhibit 99.1

Exhibit 99.1

Exhibit 99.1

Exhibit 99.1

About Altra Industrial Motion Corp.

Altra Industrial Motion Corp., through its subsidiaries, is a leading global designer, producer and marketer of a wide range of electromechanical power transmission and motion control products. The Company brings together strong brands covering over 40 product lines with production facilities in eleven countries. Altra's leading brands include Ameridrives Couplings, Bauer Gear Motor, Bibby Turboflex, Boston Gear, Delroyd Worm Gear, Formsprag Clutch, Guardian Couplings, Huco, Industrial Clutch, Inertia Dynamics, Kilian Manufacturing, Lamiflex Couplings, Marland Clutch, Matrix, Nuttall Gear, Stieber Clutch, Stromag, Svendborg Brakes, TB Wood's, Twiflex, Warner Electric, Warner Linear, and Wichita Clutch.

The Altra Industrial Motion Corp. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=4038.

* Discussion of Non-GAAP Financial Measures

As used in this release and the accompanying slides posted on the Company's website, non-GAAP diluted earnings per share, non-GAAP income from operations and non-GAAP net income are each calculated using either net income or income from operations that excludes acquisition related expenses, restructuring costs, and other income or charges that management does not consider to be directly related to the Company's core operating performance. Non-GAAP gross profit is calculated using gross profit that excludes income or charges that management does not consider to be directly related to the Company's core operating performance. Non-GAAP diluted earnings per share is calculated by dividing non-GAAP net income by GAAP weighted average shares outstanding (diluted). Non-GAAP free cash flow is calculated by deducting purchases of property, plant and equipment from net cash flows from operating activities. Non-GAAP operating working capital is calculated by deducting accounts payable from net trade receivables plus inventories.

Altra believes that the presentation of non-GAAP net income, non-GAAP income from operations, non-GAAP gross profit, non-GAAP diluted earnings per share, non-GAAP free cash flow and non-GAAP operating working

Exhibit 99.1

capital provides important supplemental information to management and investors regarding financial and business trends relating to the Company's financial condition and results of operations.

Forward-Looking Statements

All statements, other than statements of historical fact included in this release are forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to, any statement that may predict, forecast, indicate or imply future results, performance, achievements or events. Forward-looking statements can generally be identified by phrases such as "believes," "expects," "potential," "continues," "may," "should," "seeks," "predicts," "anticipates," "intends," "projects," "estimates," "plans," "could," "designed", "should be," and other similar expressions that denote expectations of future or conditional events rather than statements of fact. Forward-looking statements also may relate to strategies, plans and objectives for, and potential results of, future operations, financial results, financial condition, business prospects, growth strategy and liquidity, and are based upon financial data, market assumptions and management's current business plans and beliefs or current estimates of future results or trends available only as of the time the statements are made, which may become out of date or incomplete. Forward-looking statements are inherently uncertain, and investors must recognize that events could differ significantly from our expectations. These statements include, but may not be limited to, the expected financial impact of the Stromag acquisition, the statements under our "Business Outlook", our expectations regarding economic conditions, our expectations regarding the impact of foreign exchange rates, the impact of certain restructuring activities including on our profitability, and the Company’s guidance for full year 2017.

In addition to the risks and uncertainties noted in this release, there are certain factors that could cause actual results to differ materially from those anticipated by some of the statements made. These include: (1) competitive pressures, (2) changes in economic conditions in the United States and abroad and the cyclical nature of our markets, (3) loss of distributors, (4) the ability to develop new products and respond to customer needs, (5) risks associated with international operations, including currency risks, (6) accuracy of estimated forecasts of OEM customers and the impact of the current global economic environment on our customers, (7) risks associated with a disruption to our supply chain, (8) fluctuations in the costs of raw materials used in our products, (9) product liability claims, (10) work stoppages and other labor issues, (11) changes in employment, environmental, tax and other laws and changes in the enforcement of laws, (12) loss of key management and other personnel, (13) risks associated with compliance with environmental laws, (14) the ability to successfully execute, manage and integrate key acquisitions and mergers, (15) failure to obtain or protect intellectual property rights, (16) risks associated with impairment of goodwill or intangibles assets, (17) failure of operating equipment or information technology infrastructure, (18) risks associated with our debt leverage and operating covenants under our debt instruments, (19) risks associated with restrictions contained in our Credit Facility, (20) risks associated with compliance with tax laws, (21) risks associated with the global recession and volatility and disruption in the global financial markets, (22) risks associated with implementation of our ERP system, (23) risks associated with the Svendborg, Guardian and Stromag acquisitions and integration and other acquisitions, (24) risks associated with the Company's investment in a manufacturing facility in China, (25) risks associated with certain minimum purchase agreements

Exhibit 99.1

we have with suppliers, (26) risks associated with our exposure to variable interest rates and foreign currency exchange rates, (27) risks associated with interest rate swap contracts, (28) risks associated with our exposure to renewable energy markets, (29) risks related to regulations regarding conflict minerals, (30) risks related to restructuring and plant consolidations, and (31) other risks, uncertainties and other factors described in the Company's quarterly reports on Form 10-Q and annual reports on Form 10-K and in the Company's other filings with the U.S. Securities and Exchange Commission (SEC) or in materials incorporated therein by reference. Except as required by applicable law, Altra Industrial Motion Corp. does not intend to, update or alter its forward looking statements, whether as a result of new information, future events or otherwise. AIMC-E

CONTACT:

Altra Industrial Motion Corp.

Christian Storch, Chief Financial Officer

781-917-0541

Christian.storch@altramotion.com