Exhibit 99.4

Myers Industries, Inc.

Unaudited Pro Forma Condensed Combined Financial Statements

On July 2, 2014, CA Acquisition Inc., now known as Scepter Canada Inc. and a wholly-owned subsidiary of Myers Industries, Inc. (“Myers” or the “Company”), completed the purchase of substantially all of the assets and assumption of certain liabilities of Scepter Corporation and certain real property of SHI Properties Inc., both located in Scarborough, Ontario, Canada. Contemporaneously with the asset acquisition, Crown US Acquisition Company, now known as Scepter US Holding Company and another wholly-owned subsidiary of Myers Industries, Inc., completed the purchase of all of the issued and outstanding membership interests of Eco One Leasing, LLC and Scepter Manufacturing, LLC, both located in Miami, Oklahoma. Eco One Leasing, LLC was subsequently merged into Scepter Manufacturing, LLC. The total purchase price for these acquisitions (collectively, “Scepter” or “Scepter Corporation Group”) was approximately $157.8 million in cash, which includes an estimated working capital adjustment of $0.8 million subject to further adjustment based on the final working capital and other specified items.

The unaudited pro forma condensed combined statements of income are presented using Myers’ and Scepter’s results for the year ended December 31, 2013 and the six months ended June 30, 2014. The unaudited pro forma condensed combined statements of income present the pro forma adjustments as if the acquisition had occurred on January 1, 2013 and the unaudited pro forma condensed combined balance sheet is presented on a pro forma basis as to give effect to the completed acquisition as if it had occurred on June 30, 2014.

The pro forma financial statements have been prepared using the acquisition method of accounting under Generally Accepted Accounting Principles, which are subject to change and interpretation. Assumptions and estimates underlying the pro forma adjustments are described in the accompanying notes, which should be read in conjunction with the pro forma condensed combined financial statements.

Acquisition accounting is dependent upon certain valuations and other studies that have not yet been completed. Accordingly, the pro forma adjustments are preliminary and have been made solely for the purpose of preparing the pro forma financial statements and are based on preliminary information available at the time of the preparation of this Form 8-K/A. Differences between these preliminary estimates and the final acquisition accounting could occur and these differences could have a material impact on the pro forma financial statements and the combined company’s future results of operations and financial position.

The pro forma financial statements do not reflect any cost savings or other synergies that the combined company may achieve as a result of the completed acquisition or the costs to integrate the operations of Scepter or the cost necessary to achieve these cost savings and other synergies. The effects of the foregoing items could, individually or in the aggregate, materially impact the pro forma financial statements.

The following unaudited pro forma condensed combined financial statements were derived from and should be read in conjunction with:

The historical consolidated financial information of Myers and the historical combined financial information of Scepter has been adjusted in the pro forma condensed combined financial statements to give effect to pro forma events and adjustments that are (1) directly attributable to the acquisition of Scepter, (2) are factually supportable, and (3) with respect to the condensed combined statements of income, are expected to have a continuing impact on the combined results. The pro forma statements should be read in conjunction with the accompanying notes.

MYERS INDUSTRIES, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF INCOME

For the Six Months Ended June 30, 2014

(Dollars in thousands, except per share data)

See accompanying notes to the unaudited pro form condensed combined financial statements.

MYERS INDUSTRIES, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED STATEMENT OF INCOME

For the Year Ended December 31, 2013

(Dollars in thousands, except per share data)

See accompanying notes to the unaudited pro form condensed combined financial statements.

MYERS INDUSTRIES, INC.

UNAUDITED PRO FORMA CONDENSED COMBINED BALANCE SHEET

As of June 30, 2014

(Dollars in thousands)

See accompanying notes to the unaudited pro form condensed combined financial statements.

MYERS INDUSTRIES, INC.

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, unless indicated otherwise)

1. BASIS OF PRESENTATION

The pro forma statements have been compiled from historical consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), and should be read in conjunction with the Form 10-K for the year ended December 31, 2013 and Form 10-Q for the quarterly period ended June 30, 2014 for Myers Industries, Inc. (“Myers” or the “Company”) and the combined financial statements of Scepter Corporation Group, which are included in this Form 8-K/A. Myers’ historical condensed consolidated statement of income for the year ended December 31, 2013 has been adjusted in conformity with GAAP to reflect discontinued operations presentation for businesses disposed of or meeting the held for sale criteria as previously disclosed in the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2014. Accordingly, the unaudited pro forma condensed combined statements of income exclude certain data related to discontinued operations. These pro forma statements are presented for informational purposes only and are not necessarily indicative of what the combined company’s financial position or results of operations actually would have been had the transaction been completed as of the dates indicated. In addition, the pro forma statements do not purport to project the future financial position or operating results of the combined company.

The pro forma statements have been prepared using the acquisition method of accounting. For accounting purposes, Myers has been treated as the acquirer in the transaction. Acquisition accounting is dependent upon certain valuations and other studies that have yet to progress to a stage where there is sufficient information for a definitive measurement. Accordingly, the pro forma adjustments included herein are preliminary and have been presented solely for the purpose of providing pro forma statements and will be revised as additional information becomes available and as additional analyses are performed. The process for estimating the fair values of identifiable intangible assets and certain tangible assets requires the use of judgment in determining the appropriate assumptions and estimates. Differences between preliminary estimates in the pro forma statements and the final acquisition accounting will occur and could have a material impact on the accompanying pro forma statements and the combined company’s future results of operations and financial position.

The acquisition has been accounted for using the historical information and accounting policies of Myers and combining the assets and liabilities of Myers with Scepter Corporation Group (“Scepter” or “Scepter Corporation Group”) at their respective estimated fair values. The assets and liabilities of Scepter Corporation Group have been measured based on various preliminary estimates using assumptions that management believes are reasonable utilizing information currently available. Use of different estimates and judgments could yield materially different results. The purchase price allocation is subject to finalization of the fair value of the assets and liabilities of Scepter Corporation Group as of the closing of the transaction. Differences from these preliminary estimates could be material.

Acquisition-related transaction costs, such as investment banker, advisory, legal, valuation, and other professional fees are not included as a component of consideration transferred but are expensed as incurred. Pre-tax transaction costs associated with the acquisition totaled approximately $3.6 million, of which $0.6 million and $0.4 million have been expensed in Myers’ and Scepter’s historical financial statements, respectively. The remaining $2.6 million of transaction costs, $1.7 million net of tax, has been reflected as a reduction to retained earnings. These costs are not presented in the unaudited pro forma condensed combined statements of income because they will not have a continuing impact on the consolidated results of Myers.

The pro forma statements do not reflect any cost savings, operating synergies or revenue enhancements that the combined company may achieve as a result of the transaction or the costs to combine the operations of Myers and Scepter or the costs necessary to achieve these cost savings, operating synergies and revenue enhancements.

2. PURCHASE CONSIDERATION AND ESTIMATED ALLOCATION

On July 2, 2014, CA Acquisition Inc., now known as Scepter Canada Inc. and a wholly-owned subsidiary of Myers, completed the purchase of substantially all of the assets and assumption of certain liabilities of Scepter Corporation and certain real property of SHI Properties Inc., both located in Scarborough, Ontario, Canada. Contemporaneously with the asset acquisition, Crown US Acquisition Company, now known as Scepter US Holding Company and another wholly-owned subsidiary of Myers, completed the purchase of all of the issued and outstanding membership interests of Eco One Leasing, LLC and Scepter Manufacturing, LLC, both located in

Miami, Oklahoma. Eco One Leasing, LLC was subsequently merged into Scepter Manufacturing, LLC. The total purchase price for these acquisitions (collectively, “Scepter Corporation Group”) was approximately $157.8 million in cash, which includes an estimated working capital adjustment of $0.8 million subject to further adjustment based on the final working capital and other specified items. The acquisition of Scepter was funded from net proceeds from additional borrowings of approximately $135.3 million under the Fourth Amended and Restated Loan Agreement and cash on hand of $22.5 million.

Scepters assets and liabilities are recorded at fair value as of the date of acquisition. The purchase consideration, related preliminary estimated allocations, and resulting excess over fair value of net assets acquired are as follows:

Identifiable intangible assets acquired in connection with the acquisition of Scepter are as follows:

Property, plant and equipment acquired in connection with the acquisition of Scepter are as follows:

The entire purchase price allocation shown above is based on Myers’ preliminary estimates of fair value of Scepter’s assets and liabilities. Once sufficient information is available and final valuations are performed, the purchase price allocation may differ materially from the estimates noted above.

3. DESCRIPTION OF PRO FORMA ADJUSTMENTS

The unaudited pro forma condensed combined financial statements include the following pro forma adjustments:

Adjustments to the unaudited pro forma condensed combined statement of income for the six months ended June 30, 2014

Adjustments to the unaudited pro forma condensed combined statement of income for the year ended December 31, 2013

Adjustments to the unaudited pro forma condensed combined balance sheet

4. ACCOUNTING POLICIES

Myers has begun performing a review between the accounting policies of the two companies. Upon completion of this review, Myers may identify differences between the accounting policies of the two companies that, when conformed, could have a material impact on the combined financial statements. At this time, Myers is not aware of any differences that would have a material impact on the unaudited pro forma condensed combined financial statements.

5. INVENTORY

The unaudited pro forma condensed combined statements of income do not include an adjustment to reflect an increase in cost of sales for the adjustment of inventory to its estimated fair value as of the acquisition date as this adjustment will not have a continuing impact on the consolidated results of the combined company.

6. DEFERRED TAXES

The unaudited pro forma condensed combined balance sheet does not include an adjustment to reflect the establishment of estimated deferred tax assets and liabilities for Scepter’s U.S. and Canadian operations as the acquisition was treated as an asset purchase and the fair market values of the assets purchased and liabilities assumed are the same for both book and tax purposes.