| 1. Title of Derivative Security (Instr. 4)
 | 2. Date Exercisable and Expiration Date (Month/Day/Year)
 | 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)
 | 4. Conversion or Exercise Price of Derivative Security | 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)
 | 6. Nature of Indirect Beneficial Ownership (Instr. 5)
 | 
| Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 
| Stock Appreciation Rights | (1) | 12/31/2017 | Common Stock | 3,600 | $
                20.14 | D |  | 
| Stock Appreciation Rights | (2) | 02/28/2018 | Common Stock | 600 | $
                21.56 | D |  | 
| Stock Appreciation Rights | (3) | 02/27/2019 | Common Stock | 1,840 | $
                6.82 | D |  | 
| Stock Appreciation Rights | (4) | 05/07/2020 | Common Stock | 1,854 | $
                22.94 | D |  | 
| Stock Appreciation Rights | (5) | 05/18/2021 | Common Stock | 2,257 | $
                53.29 | D |  | 
| Stock Appreciation Rights | (6) | 05/31/2022 | Common Stock | 5,409 | $
                44.79 | D |  | 
| Stock Appreciation Rights | (7) | 09/01/2022 | Common Stock | 453 | $
                48.39 | D |  | 
| Stock Appreciation Rights | (8) | 12/19/2023 | Common Stock | 2,512 | $
                79.58 | D |  | 
| Stock Appreciation Rights | (9) | 04/30/2024 | Common Stock | 3,752 | $
                59.98 | D |  | 
| * | If the form is filed by more than one reporting person, see Instruction 5(b)(v). | 
| ** | Intentional misstatements or omissions of facts constitute Federal Criminal Violations.  See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). | 
| (1) | These stock appreciation rights were fully vested as of December 31, 2010. | 
| (2) | These stock apprecation rights were fully vested as of February 28, 2011. | 
| (3) | These stock apprecation rights were fully vested as of February 27, 2012. | 
| (4) | These stock appreciation rights were fully vested as of May 7, 2013. | 
| (5) | These stock appreciation rights were fully vested as of May 18, 2014. | 
| (6) | 40% of these stock appreciation rights were vested as of May 31, 2014 and the remaining 60% will vest May 31, 2015. | 
| (7) | 40% of these stock appreciation rights were vested as of September 1, 2014 and the remaining 60% will vest September 1, 2015. | 
| (8) | 20% of these stock appreciation rights vested on June 21, 2014, 20% will vest June 21, 2015 and the remaining 60% will vest June 21, 2016. | 
| (9) | 20% of these stock appreciation rights will vest April 30, 2015, 20% will vest April 30, 2016 and the remaining 60% will vest April 30, 2017. |