Organization	9 Months Ended
Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization Nature of Business Celcuity Inc., a Delaware corporation (the “Company”), is a clinical-stage biotechnology company seeking to extend the lives of cancer patients by pursuing an integrated companion diagnostic (CDx) and therapeutic (Rx) strategy. Our CELsignia companion diagnostic platform is uniquely able to analyze live patient tumor cells to identify new groups of cancer patients likely to benefit from targeted therapies. This enables a CELsignia CDx to support advancement of new indications for already approved targeted therapies. Our therapeutic efforts are focused on in-licensing and developing molecularly targeted therapies that address the same cancer driver our companion diagnostics can identify. By pursuing an integrated companion diagnostic and therapeutic strategy, we believe we are uniquely positioned to achieve our goal of helping cancer patients receive the therapeutic best suited to treat their cancer driver. The Company was co-founded in 2012 by Brian F. Sullivan and Dr. Lance G. Laing and is based in Minnesota. The Company has not generated any revenues to date. Follow-on Offering On July 1, 2021, the Company completed a follow-on offering whereby it sold 2,250,000 shares of common stock at a public offering price of $25.00 per share. The aggregate gross proceeds from the sale of shares in the follow-on offering was approximately $56.3 million before deducting underwriting discounts of approximately $3.4 million and offering expenses of approximately $0.1 million. On February 26, 2021, the Company completed a follow-on offering whereby it sold 1,971,100 shares of common stock (including 257,100 shares of common stock in connection with the full exercise of the underwriters’ option to purchase additional shares) at a public offering price of $14.00 per share. The aggregate gross proceeds from the sale of shares in the follow-on offering, including the sale of shares pursuant to the full exercise of the underwriters’ option to purchase additional shares, was approximately $27.6 million before deducting underwriting discounts of approximately $1.6 million and offering expenses of approximately $0.2 million.

Organization

9 Months Ended

Sep. 30, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Organization

Nature of Business

Celcuity Inc., a Delaware corporation (the “Company”), is a clinical-stage biotechnology company seeking to extend the lives of cancer patients by pursuing an integrated companion diagnostic (CDx) and therapeutic (Rx) strategy. Our CELsignia companion diagnostic platform is uniquely able to analyze live patient tumor cells to identify new groups of cancer patients likely to benefit from targeted therapies. This enables a CELsignia CDx to support advancement of new indications for already approved targeted therapies. Our therapeutic efforts are focused on in-licensing and developing molecularly targeted therapies that address the same cancer driver our companion diagnostics can identify. By pursuing an integrated companion diagnostic and therapeutic strategy, we believe we are uniquely positioned to achieve our goal of helping cancer patients receive the therapeutic best suited to treat their cancer driver. The Company was co-founded in 2012 by Brian F. Sullivan and Dr. Lance G. Laing and is based in Minnesota. The Company has not generated any revenues to date.

Follow-on Offering

On July 1, 2021, the Company completed a follow-on offering whereby it sold 2,250,000 shares of common stock at a public offering price of $25.00 per share. The aggregate gross proceeds from the sale of shares in the follow-on offering was approximately $56.3 million before deducting underwriting discounts of approximately $3.4 million and offering expenses of approximately $0.1 million.

On February 26, 2021, the Company completed a follow-on offering whereby it sold 1,971,100 shares of common stock (including 257,100 shares of common stock in connection with the full exercise of the underwriters’ option to purchase additional shares) at a public offering price of $14.00 per share. The aggregate gross proceeds from the sale of shares in the follow-on offering, including the sale of shares pursuant to the full exercise of the underwriters’ option to purchase additional shares, was approximately $27.6 million before deducting underwriting discounts of approximately $1.6 million and offering expenses of approximately $0.2 million.