We incurred $2,165,064 and $1,705,391 of general and administrative expenses for the three months ended June 30, 2020 and 2019, respectively, an increase of approximately 27%. Of the amounts for the three months ended June 30, 2020, as compared to the comparable 2019 period: $386,029 was incurred primarily for wages, bonuses, vacation pay, severance, taxes and insurance, versus $567,159 for the 2019 comparable period. The decrease for the three months ending June 30, 2020 is principally based upon the resignation of our General Counsel and Regulatory Vice President in the June 30, 2019 period; $950,906 was incurred for ongoing legal expenses versus $208,769 for the 2019 comparable period based upon work associated with our strategic alternatives; $398,831 was incurred for outside operations consulting services, versus $261,254 for the 2019 comparable period as we incurred additional cash and non-cash expenses for investment banking consulting services; $1,758 was incurred for travel expenses, versus $53,725 for the 2019 comparable period, which decrease is primarily attributable to limited travel due to the COVID-19 contagion; $89,212 was incurred for investor relations services versus $432,881 for the 2019 comparable period, which additional expenses in the six months ended June 30, 2019 were primarily attributable to non-cash compensation paid to advisors and an increase in our market exposure; $124,923 was incurred for professional fees associated with auditing, financial, accounting and tax advisory services, versus $22,480 for the 2019 comparable period which increase is primarily attributable to fees relating to document preparation for our announced strategic transactions; $154,083 was incurred for insurance, versus $107,750 for the 2019 comparable period; and $59,322 was incurred for utilities, supplies, license fees, filing costs, rent, advertising and other versus $51,373 for the 2019 comparable period.
Stock Based Compensation Expenses
We incurred related party non-cash expenses totaling $0 and $47,177 for the three months ended June 30, 2020 and 2019, respectively. The decrease is primarily attributable to the resignation of two Board members who were affiliates of CRE and fully expensing certain options in 2019.
We incurred $404,280 and $780,519 of non-related party non-cash expenses for the three months ended June 30, 2020 and 2019, respectively. The decrease for the comparable period is primarily attributable to newly issued stock options during the first quarter of 2019, which included awards with accelerated vesting terms.
Other Income, net
We earned $75,641 of interest income for the three months ended June 30, 2020 as compared to $104,562 for the three months ended June 30, 2019 on funds deposited in interest-bearing money market accounts.
Net loss and loss per share
We incurred losses of $2,932,126 and $4,007,466 for the three months ended June 30, 2020 and 2019, respectively. The decreased loss was primarily attributable to the decrease in research and development expenses associated with completing our most recent Phase 2 confirmatory clinical trial and a decrease in non-cash stock-based compensation expenses offset by the increase in our general and administrative expenses and the initiation of our current Phase 2 follow-on clinical trial for AD. Earnings (losses) per common share were ($0.13) and ($0.31) for the three months ended June 30, 2020 and 2019, respectively. The decrease in loss per share is primarily attributable to the decrease in our net loss and an increase in weighted average common shares outstanding.
The computation of diluted loss per share for the three months ended June 30, 2020 excludes 21,871,258 warrants and options to purchase 2,271,573 shares of our common stock as they are anti-dilutive due to our net loss. For the three months ended June 30, 2019, the computation excludes 10,317,357 warrants and options to purchase 2,295,246 shares of our common stock, as they are anti-dilutive due to our net loss.
Financial Condition, Liquidity and Capital Resources
Cash and Working Capital
Since inception, we have incurred negative cash flows from operations. As of June 30, 2020, we had an accumulated deficit of $94,286,313 and had working capital of $29,773,161 as compared to working capital of $17,397,094 as of December 31, 2019. The $12,376,067 increase in working capital was primarily attributable to an increase in cash of approximately $16.5 million, net of transaction expenses, from our registered direct offering of common stock and warrants (described below) offset by our net loss, excluding non-cash compensation and consulting expenses and depreciation, of $4,138,508 plus capital expenditures of $5,413.