IMAX CORPORATION

Exhibit 99.1

IMAX CORPORATION

2525 Speakman Drive

Mississauga, Ontario, Canada L5K 1B1

Tel: (905) 403-6500 Fax: (905) 403-6450

www.imax.com

IMAX CORPORATION REPORTS FIRST QUARTER 2015 FINANCIAL RESULTS

HIGHLIGHTS

NEW YORK, NY – Apr. 30, 2015 – IMAX Corporation (NYSE:IMAX) today reported first quarter 2015 revenues of $62.2 million, adjusted EBITDA as calculated in accordance with the Company’s credit facility of $16.0 million, adjusted net income after non-controlling interest of $5.0 million, or $0.07 per diluted share, and reported net income after non-controlling interest of $0.4 million, or $nil per diluted share. The Company also reported a first quarter global per screen average of $202,900.

“This is a very exciting time for IMAX,” said IMAX CEO Richard L. Gelfond. “Our continued progress in expanding our theatre network globally, along with our strong film performance during the first quarter, resulted in robust financial results with almost 30% revenue growth and over 50% adjusted earnings growth compared to the same period last year. With record results from Furious 7 in April and a great start to the Avenger’s sequel internationally, the momentum has continued into the second quarter.”

Network Growth Update

The total IMAX^® theatre network consisted of 943 systems as of March 31, 2015, of which 820 were in commercial multiplexes. There were 403 theatres in backlog as of March 31, 2015, compared to 431 in backlog as of March 31, 2014. In the first quarter of 2015, the Company signed contracts for 21 theatres, of which 20 were for new locations and 1 was for an upgrade. In the quarter, the Company also installed 13 theatres, of which 11 were for new theatre locations and 2 were upgrades. For a breakdown of theatre system signings, installations, network and backlog by type, please see the end of this press release.

“The year has gotten off to a very positive start with film performance, network expansion, technology advancements and openings in new markets, all showing promise,” continued Gelfond. “With the successful launch of our laser system to rave reviews, our recent long-term movie deals with Disney and Warner Brothers, our installation pace and new signings and strong box office results so far this year – we continue to solidify our leading position in the entertainment ecosystem and set the stage for future long-term growth.”

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First-Quarter Segment Results

Conference Call

The Company will host a conference call today at 8:30 AM ET to discuss its first quarter 2015 financial results. To access the call via telephone, interested parties in the US and Canada should dial (800) 524-8950 approximately 5 to 10 minutes before the call begins. International callers should dial (416) 260-0113. The conference ID for the call is 1956369. A replay of the call will be available via webcast on the ‘Investor Relations’ section of www.imax.com or via telephone by dialing (888) 203-1112 (US and Canada), or (647) 436-0148 (international). The Conference ID for the telephone replay is 1956369.

About IMAX Corporation

IMAX, an innovator in entertainment technology, combines proprietary software, architecture and equipment to create experiences that take you beyond the edge of your seat to a world you’ve never imagined. Top filmmakers and studios are utilizing IMAX theatres to connect with audiences in extraordinary ways, and, as such, IMAX’s network is among the most important and successful theatrical distribution platforms for major event films around the globe.

IMAX is headquartered in New York, Toronto and Los Angeles, with offices in London, Tokyo, Shanghai and Beijing. As of March 31, 2015, there were 943 IMAX theatres (820 commercial multiplexes, 18 commercial destinations and 105 institutions) in 63 countries.

IMAX^®, IMAX^® 3D, IMAX DMR^®, Experience It In IMAX^®, An IMAX 3D Experience^®, The IMAX Experience^®, IMAX Is Believing^® and IMAX nXos^® are trademarks of IMAX Corporation. More information about the Company can be found at www.imax.com. You may also connect with IMAX on Facebook (www.facebook.com/imax), Twitter (www.twitter.com/imax) and YouTube (www.youtube.com/imaxmovies).

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This press release contains forward looking statements that are based on IMAX management’s assumptions and existing information and involve certain risks and uncertainties which could cause actual results to differ materially from future results expressed or implied by such forward looking statements. Important factors that could affect these statements include, but are not limited to, general economic, market or business conditions; the opportunities (or lack thereof) that may be presented to and pursued by the Company; the performance of IMAX DMR films; competitive actions by other companies; conditions in the in-home and out-of-home entertainment industries; the signing of theater system agreements; changes in laws or regulations; conditions, changes and developments in the commercial exhibition industry; the failure to convert theater system backlog into revenue; risks associated with investments and operations in foreign jurisdictions and any future international expansion, including those related to economic, political and regulatory policies of local governments and laws and policies of the United States and Canada; risks related to the Company’s growth and operations in China; the failure to respond to change and advancements in digital technology; risks related to the acquisition of AMC Entertainment Holdings, Inc. by Dalian Wanda Group Co., Ltd.; risks related to new business initiatives; the potential impact of increased competition in the markets within which the Company operates; risks related to the Company’s inability to protect the Company’s intellectual property; risks related to Eastman Kodak bankruptcy and the possibility of constrained film supply; risks related to the Company’s

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implementation of a new enterprise resource planning system; risks related to the Company’s prior restatements and the related litigation; and other factors, many of which are beyond the control of the Company. These factors, other risks and uncertainties and financial details are discussed in IMAX’s most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Q.

For additional information please contact:

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Additional Information

Signings and Installations

Mar. 31, 2015

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Additional Information (continued)

2015 DMR Films:

In addition to the 13 IMAX DMR films released to the IMAX theater network during the first three months of 2015, 18 additional IMAX DMR films have been announced so far to be released in the remaining nine months of 2015:

To date, the Company has announced the following 14 titles to be released to the IMAX theater network in 2016:

The Company remains in active negotiations with all of the major Hollywood studios for additional films to fill out its short and long-term film slate, and anticipates that a similar number of IMAX DMR films will be released to the IMAX network in 2015 to the 40 films that were released to the IMAX network in 2014.

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IMAX CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

In accordance with United States Generally Accepted Accounting Principles

(In thousands of U.S. dollars, except per share amounts)

(Unaudited)

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IMAX CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

In accordance with United States Generally Accepted Accounting Principles

(in thousands of U.S. dollars)

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IMAX CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

In accordance with United States Generally Accepted Accounting Principles

(In thousands of U.S. dollars)

(Unaudited)

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IMAX CORPORATION

SELECTED FINANCIAL DATA

In accordance with United States Generally Accepted Accounting Principles

(in thousands of U.S. dollars)

The Company has seven reportable segments identified by category of product sold or service provided: IMAX systems; theater system maintenance; joint revenue sharing arrangements; film production and IMAX DMR; film distribution; film post-production; and other. The IMAX systems segment includes the design, manufacture, sale or lease of IMAX theater projection system equipment. The theater system maintenance segment includes the maintenance of IMAX theater projection system equipment in the IMAX theater network. The joint revenue sharing arrangements segment includes the provision of IMAX theater projection system equipment to an exhibitor in exchange for a share of the box-office and concession revenues. The film production and IMAX DMR segment includes the production of films and the performance of film re-mastering services. The film distribution segment includes the distribution of films for which the Company has distribution rights. The film post-production segment provides film post-production and film print services. The other segment includes certain IMAX theaters that the Company owns and operates, camera rentals and other miscellaneous items.

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IMAX CORPORATION

OTHER INFORMATION

(in thousands of U.S. dollars)

Non-GAAP Financial Measures:

In this release, the Company presents adjusted net income, adjusted net income per diluted share, adjusted net income attributable to common shareholders and adjusted net income attributable to common shareholders per diluted share as supplemental measures of performance of the Company, which are not recognized under U.S. GAAP. The Company presents adjusted net income and adjusted net income per diluted share because it believes that they are important supplemental measures of its comparable controllable operating performance and it wants to ensure that its investors fully understand the impact of its stock-based compensation (net of any related tax impact) on net income. In addition, the Company presents adjusted net income attributable to common shareholders and adjusted net income attributable to common shareholders per diluted share because it believes that they are important supplemental measures of its comparable financial results and could potentially distort the analysis of trends in business performance and it wants to ensure that its investors fully understand the impact of net income attributable to non-controlling interests and its stock-based compensation (net of any related tax impact) in determining net income attributable to common shareholders. Management uses these measures to review operating performance on a comparable basis from period to period. However, these non-GAAP measures may not be comparable to similarly titled amounts reported by other companies. Adjusted net income, adjusted net income per diluted share, adjusted net income attributable to common shareholders and adjusted net income attributable to common shareholders per diluted share should be considered in addition to, and not as a substitute for, net income and net income attributable to common shareholders and other measures of financial performance reported in accordance with U.S. GAAP.

The Credit Facility provides that the Company will be required at all times to satisfy a Minimum Liquidity Test (as defined in the Credit Agreement) of at least $50 million. The Company will also be required to maintain minimum EBITDA (as defined in the Credit Agreement) of $90.0 million until December 30, 2015, which requirement increases to $100.0 million on December 31, 2015. The Company must also maintain a Maximum Total Leverage Ratio (as defined in the Credit Agreement) of 2.5:1.0 until December 30, 2015, which requirement decreases to (i) 2.25:1.0 on December 31, 2015; (ii) 2.0:1.0 on December 31, 2016; and (iii) 1.75:1.0 on December 31, 2017. The ratio of total debt to EBITDA was 0.14:1 as at March 31, 2015, where Total Debt (as defined in the Credit Agreement) is the sum of all obligations evidenced by notes, bonds, debentures or similar instruments and was $16.1 million. EBITDA is calculated as follows:

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IMAX CORPORATION

OTHER INFORMATION

(in thousands of U.S. dollars)

Adjusted Net Income and Adjusted Diluted Per Share Calculations – Quarter Ended March 31, 2015 vs. 2014:

The Company reported net income of $1.5 million or $0.02 per basic and diluted share for the first quarter of 2015, as compared to $0.6 million or $0.01 per basic and diluted share for the first quarter of 2014. Adjusted net income, which consists of net income excluding the impact of stock-based compensation and the related tax impact, was $6.1 million or $0.09 per diluted share for the first quarter of 2015 as compared to adjusted net income of $3.3 million or $0.05 per diluted share for the first quarter of 2014. Adjusted net income attributable to common shareholders, which consists of net income attributable to common shareholders excluding the impact of stock-based compensation and the related tax impact, was $5.0 million or $0.07 per diluted share for the first quarter of 2015 as compared to adjusted net income attributable to common shareholders of $3.3 million or $0.05 per diluted share for the first quarter of 2014. A reconciliation of net income and net income attributable to common shareholders, the most directly comparable U.S. GAAP measures, to adjusted net income, adjusted net income per diluted share, adjusted net income attributable to common shareholders and adjusted net income attributable to common shareholders per diluted share is presented in the table below:

Free Cash Flow:

Free cash flow is defined as cash provided by operating activities minus cash used in investing activities (from the consolidated statements of cash flows). Cash provided by operating activities consist of net income, plus depreciation and amortization, plus the change in deferred income taxes, plus other non-cash items, plus changes in working capital, less investment in film assets, plus other changes in operating assets and liabilities. Cash used in investing activities includes capital expenditures, acquisitions and other cash used in investing activities. Management views free cash flow, a non-GAAP measure, as a measure of the Company’s after-tax cash flow available to reduce debt, add to cash balances, and fund other financing activities. A reconciliation of cash provided by operating activities to free cash flow is presented in the table below:

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