Results of Operations
Comparison of the Three Months Ended September 30, 2020 and 2019
Revenue
For the three months ended September 30, 2020, revenue was approximately $28,000 compared to approximately $280,000 for the three months ended September 30, 2019, a decrease of $252,000. Revenue for the three months ended September 30, 2019 included $238,000 from TGTX for the purchase of clinical material of cosibelimab.
Research and Development Expenses
Research and development expenses primarily consist of personnel related expenses, including salaries, benefits, travel, and other related expenses, stock-based compensation, payments made to third parties for license and milestone costs related to in-licensed products and technology, payments made to third-party contract research organizations (“CROs”) for preclinical and clinical studies, investigative sites for clinical trials, consultants, the cost of acquiring and manufacturing clinical trial materials, costs associated with regulatory filings and patents, laboratory costs and other supplies.
For the three months ended September 30, 2020, research and development expenses were approximately $2.5 million, compared to $3.9 million for the three months ended September 30, 2019, a decrease of $1.4 million. The current period research and development expenses primarily consisted of $2.0 million related to clinical costs for our product candidates and $0.2 million related to stock compensation expense. The prior period research and development expenses primarily consisted of $2.3 million related to clinical costs for our product candidates, $1.1 million related to manufacturing costs of our product candidates, and $0.2 million related to stock compensation expense.
We anticipate our research and development expenses to increase modestly for the remainder of 2020.
General and Administrative Expenses
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, for executives and other administrative personnel, recruitment expenses, professional fees and other corporate expenses, including investor relations, legal activities, and facilities-related expenses.
For the three months ended September 30, 2020, general and administrative expenses were approximately $2.4 million, compared to $1.6 million for the three months ended September 30, 2019, an increase of $0.8 million. The current period general and administrative expenses primarily consisted of stock compensation expense of $0.6 million, $0.7 million related to our issuance of shares to Fortress pursuant to the Founders Agreement in connection with the sale of shares of our common stock, $0.3 million for salary expense, $0.3 million related to legal and accounting fees and $0.1 million related to investor relation fees. The prior period general and administrative expenses primarily consisted of stock compensation expense of $0.7 million, $0.3 million related to salary expenses, $0.2 million related to legal and accounting fees and $0.1 million related to our issuance of shares to Fortress pursuant to the Founders Agreement in connection with the sale of shares of our common stock.
We anticipate our general and administrative expenses will remain relatively consistent for the remainder of 2020.
Comparison of the Nine Months Ended September 30, 2020 and 2019
Revenue
For the nine months ended September 30, 2020, revenue was approximately $1.0 million compared to approximately $1.7 million for the nine months ended September 30, 2019, a decrease of $0.7 million. Revenue for the current period primarily consisted of $1.0 million from TGTX related to the collaboration agreement, including a milestone of $925,000 upon the 12th patient dosed in a phase 1 clinical trial for cosibelimab during March 2020. Revenue for the nine months ended September 30, 2019 consisted period primarily consisted of $1.6 million from TGTX related to the collaboration agreement, including a $1.0 million upfront licensing fee due upon the signing of an amendment to the agreement and approximately $0.6 million for the purchase of clinical material of cosibelimab.