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Shareholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2023
Shareholders' Equity |
Schedule of purchases of equity Shares | The following table contains activity relating to our acquisition of equity securities during the six months ended June 30, 2023:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ |  | ​ | ​ | Maximum number
​ | ​ | ​ | ​ | ​ | ​ | of shares
​ | ​ | Total number | ​ | Average price | ​ | remaining to be
​ | ​ | of shares | ​ | paid per | ​ | purchased under
​ |  | purchased | ​ | share |  | the program
Beginning of normal-course issuer bid, March 8, 2022 (1) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 1,183,410
January 2023 | ​ | 125,200 | ​ | $ | 5.96 | ​ | ​ | ​
February 2023 | ​ | 65,500 | ​ | $ | 5.63 | ​ | ​ | ​
Total as of March 7, 2023 | ​ | 190,700 | ​ | $ | 5.82 | ​ | ​ | 10,210
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Beginning of normal-course issuer bid, March 27, 2023 (2) | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 2,292,644
March 2023 | ​ | 47,220 | ​ | $ | 5.32 | ​ | ​ | ​
April 2023 | ​ | 70,406 | ​ | $ | 5.35 | ​ | ​ | ​
May 2023 | ​ | 83,097 | ​ | $ | 5.11 | ​ | ​ | ​
June 2023 | ​ | 171,552 | ​ | $ | 5.13 | ​ | ​ | ​
Total as of June 30, 2023 | ​ | 372,275 | ​ | $ | 5.11 | ​ | ​ | 1,920,369
| (1) | Epsilon repurchased these shares under its 2022-2023 share repurchase program that commenced on March 8, 2022 and terminated on March 7, 2023, as described above.
| (2) | Epsilon repurchased these shares under its 2023-2024 share repurchase program that commenced on March 27, 2023, as described above.
Schedule of restricted stock activity | The following table summarizes Restricted Stock activity for the six months ended June 30, 2023, and the year ended December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended | ​ | Year ended
​ | ​ | June 30, 2023 | ​ | December 31, 2022
​ | ​ | Number of | ​ | Weighted | ​ | Number of | ​ | Weighted
​ | ​ | Restricted | ​ | Average | ​ | Restricted | ​ | Average
​ | ​ | Shares | ​ | Remaining Life | ​ | Shares | ​ | Remaining Life
​ |  | Outstanding |  | (years) |  | Outstanding |  | (years)
Balance non-vested Restricted Stock at beginning of period | ​ | 298,210 | ​ | 1.74 | ​ | 166,002 | ​ | 1.38
Granted | ​ | — | ​ | — | ​ | 289,231 | ​ | 1.86
Vested | ​ | — | ​ | — | ​ | (157,023) | ​ | —
Balance non-vested Restricted Stock at end of period | ​ | 298,210 | ​ | 1.24 | ​ | 298,210 | ​ | 1.74
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of PSU activity | The following table summarizes PSUs for the six months ended June 30, 2023 and the year ended December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended | ​ | Year ended
​ | ​ | June 30, 2023 | ​ | December 31, 2022
​ | ​ | Number of | ​ | Weighted | ​ | Number of | ​ | Weighted
​ | ​ | Performance | ​ | Average | ​ | Performance | ​ | Average
​ | ​ | Shares | ​ | Remaining Life | ​ | Shares | ​ | Remaining Life
​ |  | Outstanding |  | (years) |  | Outstanding |  | (years)
Balance non-vested PSUs at beginning of period | ​ | 15,833 | ​ | 1.00 | ​ | 151,500 | ​ | 3.84
Vested | ​ | — | ​ | — | ​ | (135,667) | ​ | —
Balance non-vested PSUs at end of period | ​ | 15,833 | ​ | 0.50 | ​ | 15,833 | ​ | 1.00
Summary of stock option activity | The following table summarizes stock option activity for the six months ended June 30, 2023 and the year ended December 31, 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended | ​ | Year ended
​ | ​ | June 30, 2023 | ​ | December 31, 2022
​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | Weighted
​ | ​ | Number of | ​ | Average | ​ | Number of | ​ | Average
​ | ​ | Options | ​ | Exercise | ​ | Options | ​ | Exercise
Exercise price in US$ |  | Outstanding |  | Price |  | Outstanding |  | Price (1)
Balance at beginning of period | ​ | 70,000 | ​ | $ | 5.03 | ​ | ​ | 218,750 | ​ | $ | 5.28
Exercised | ​ | — | ​ | $ | — | ​ | ​ | (138,750) | ​ | $ | 5.38
Expired/Forfeited | ​ | — | ​ | $ | — | ​ | ​ | (10,000) | ​ | $ | 5.51
Balance at period-end | ​ | 70,000 | ​ | $ | 5.03 | ​ | ​ | 70,000 | ​ | $ | 5.03
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable at period-end | ​ | 70,000 | ​ | $ | 5.03 | ​ | ​ | 70,000 | ​ | $ | 5.03

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