Explanation of Responses:
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1)
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Disposed of pursuant to an Agreement and Plan of Merger, dated October 23, 2012 (the "Merger Agreement"), by and among PolyOne Corporation ("PolyOne"), 2012 RedHawk, Inc. ("Merger Sub"), 2012 RedHawk, LLC (n/k/a PolyOne Designed Structures and Solutions LLC) ("Merger LLC"), and Spartech Corporation ("Spartech"), pursuant to which Spartech first merged with and into Merger Sub with Spartech surviving the merger as a wholly owned subsidiary of PolyOne, and subsequently merged with and into Merger LLC, with Merger LLC as the surviving entity as a wholly owned subsidiary of PolyOne. Pursuant to the Merger Agreement, at the Effective Time (as defined in the Merger Agreement), each outstanding share of Spartech common stock (other than the shares of restricted stock described under footnote (2) below) was converted into the right to receive (i) .3167 of a PolyOne common share and (ii) $2.67 in cash.
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2)
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Pursuant to the Merger Agreement, at the Effective Time, these shares of Spartech restricted stock, which provided for vesting in four equal annual installments beginning December 12, 2013, were assumed by PolyOne and converted into a restricted share award relating to 3,217 shares of PolyOne common stock.
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3)
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Pursuant to the Merger Agreement, at the Effective Time, this option, which is fully vested and exercisable as of the Effective Time, was assumed by PolyOne and converted into an option to acquire 1,921 shares of PolyOne common stock at $50.17 per share.
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4)
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Pursuant to the Merger Agreement, at the Effective Time, this option, which is fully vested and exercisable as of the Effective Time, was assumed by PolyOne and converted into an option to acquire 261 shares of PolyOne common stock at $50.17 per share.
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5)
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Pursuant to the Merger Agreement, at the Effective Time, this option, which is fully vested and exercisable as of the Effective Time, was assumed by PolyOne and converted into an option to acquire 1,528 shares of PolyOne common stock at $59.60 per share.
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6)
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Pursuant to the Merger Agreement, at the Effective Time, this option, which is fully vested and exercisable as of the Effective Time, was assumed by PolyOne and converted into an option to acquire 2,837 shares of PolyOne common stock at $59.60 per share.
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7)
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Pursuant to the Merger Agreement, at the Effective Time, this option, which is fully vested and exercisable as of the Effective Time, was assumed by PolyOne and converted into an option to acquire 5,457 shares of PolyOne common stock at $48.54 per share.
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8)
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Pursuant to the Merger Agreement, at the Effective Time, these stock appreciation rights, which are fully vested and exercisable as of the Effective Time, were assumed by PolyOne and replaced with stock appreciation rights related to 2,532 PolyOne common shares with a base price of $60.50 per share.
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9)
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Pursuant to the Merger Agreement, at the Effective Time, these stock appreciation rights, which are fully vested and exercisable as of the Effective Time, were assumed by PolyOne and replaced with stock appreciation rights related to 7,771 PolyOne common shares with a base price of $30.99 per share.
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10)
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Pursuant to the Merger Agreement, at the Effective Time, these stock appreciation rights, which are fully vested and exercisable as of the Effective Time, were assumed by PolyOne and replaced with stock appreciation rights related to 14,150 PolyOne common shares with a base price of $22.02 per share.
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11)
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Pursuant to the Merger Agreement, at the Effective Time, these stock appreciation rights, which provide for vesting in four equal annual installments beginning on December 12, 2013, were assumed by PolyOne and replaced with stock appreciation rights related to 3,217 PolyOne common shares with a base price of $20.53 per share.
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