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Share-Based Compensation (Table) | 6 Months Ended
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Jun. 30, 2021
Share-Based Compensation |
Summary of options activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Weighted |  | ​
​ | ​ | ​ | ​ | average | ​ | Weighted
​ | ​ | ​ | ​ | exercise | ​ | average
​ | ​ | Number of | ​ | price | ​ | contractual
​ | ​ | shares | ​ | per share | ​ | term (years)
Outstanding at December 31, 2019 |  | — |  | ​ | — |  | —
Granted |  | 1,756,279 | ​ | $ | 0.25 |  | 5.9
Exercised |  | — | ​ |  | — |  | —
Forfeited |  | — | ​ |  | — |  | —
Outstanding at December 31, 2020 |  | 1,756,279 | ​ | $ | 0.25 |  | 5.9
Granted |  | 36,393 | ​ | $ | 3.91 |  | 9.8
Exercised |  | — | ​ |  | — |  | —
Forfeited |  | — | ​ |  | — |  | —
Outstanding at June 30, 2021 |  | 1,792,672 | ​ | $ | 0.32 |  | 6.2
Assumptions for estimating the fair value of options | ​
​ | ​ | ​ | ​ | ​
​ |  | Three and six months ended |
​ | ​ | June 30, 2021 |
Risk-free interest rate |  | ​ | 0.59 | %
Expected term (in years) |  | ​ | 6.0 | ​
Expected volatility |  | ​ | 97.20 | %
Expected dividend yield |  | ​ | — | %
Fair value per share of underlying stock | ​ | $ | 3.91 | ​

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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