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NET LOSS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2022
NET LOSS PER SHARE |
Schedule of basic and diluted net loss per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ | ​ | 2020 | ​ | 2021 | ​ | 2022
​ |  | US$ |  | US$ |  | US$
Numerator: |  |  |  |  |  |
Net loss attributable to Adagene Inc.’s shareholders |  | (42,397,279) |  | (73,177,935) |  | (79,971,847)
Accretion of convertible redeemable preferred shares to redemption value |  | (248,113) |  | (28,553) |  | —
Net loss attributable to ordinary shareholders |  | (42,645,392) |  | (73,206,488) |  | (79,971,847)
Denominator: |  | ​ |  |  |  |
Weighted‑average number of ordinary shares outstanding—basic and diluted |  | 15,950,698 |  | 50,032,009 |  | 54,135,084
Net Loss per share—basic and diluted |  | (2.67) |  | (1.46) |  | (1.48)
​
Schedule of potentially dilutive securities that are not included in the calculation of diluted net loss per share | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31,
​ |  | 2020 |  | 2021 |  | 2022
Convertible redeemable preferred shares |  | 27,249,824 |  | — |  | —
Share options and share grant |  | 1,795,932 |  | 1,739,882 |  | 530,298

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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