Sales and Marketing
Sales and marketing expenses increased by $1.5 million, or 18%, to $9.4 million for the six months ended June 30, 2020 from $7.9 million for the six months ended June 30, 2019. The increase was primarily due to higher salary, benefits and commission costs driven by an increase in headcount which was offset by the salary reductions and lower travel expenses resulting from the cost containment actions taken in response to the COVID-19 pandemic.
General and Administrative
General and administrative expenses increased by $2.1 million, or 85%, to $4.7 million for the six months ended June 30, 2020 from $2.5 million for the six months ended June 30, 2019. The increase was primarily due to a $1.0 million increase in insurance costs, higher professional and board fees of $0.6 million, higher non-cash stock based compensation expense of $0.4 million and additional bad debt expense of $0.2 million which was offset by the salary reductions and reduced spending from the cost containment actions taken in response to the COVID-19 pandemic.
Research and Development
Research and development expenses decreased by $0.8 million, or 30%, to $1.9 million for the six months ended June 30, 2020 from $2.7 million for the six months ended June 30, 2019 primarily due to a decrease in licensing payments of $0.5 million, reduced outside development expenses and a lower level of laboratory spend.
Interest Expense
Interest expense was $1.8 million for both the six months ended June 30, 2020 and 2019. The slight decrease of $63,000, or 3%, for the six months ended June 30, 2020 was primarily due a lower interest rate during the six months ended June 30, 2020 compared to the prior period.
Change in Fair Value of Preferred Stock Warrant Liability
For the six months ended June 30, 2019, we recognized a loss of $38,000 due to the change in the fair value of the preferred stock warrant liability.
Other Income
Other income was $0.1 million for the six months ended June 30, 2020 and 2019.
Liquidity and Capital Resources
Overview
As of June 30, 2020, we had cash and cash equivalents of $85.5 million, working capital of $90.5 million and an accumulated deficit of $181.2 million. As of December 31, 2019, we had cash, cash equivalents and short-term investments of $54.6 million, working capital of $57.6 million and an accumulated deficit of $167.9 million.
On November 13, 2019, we closed our IPO in which we issued and sold 4,398,700 shares of our common stock at a public offering price of $13.00 per share, which included 398,700 shares of our common stock sold pursuant to the underwriters’ option to purchase additional shares. We received net proceeds of $50.6 million after deducting underwriting discounts and commissions and other expenses.
On June 30, 2020, we closed an underwritten public offering in which we issued and sold 3,000,000 shares of our common stock at a public offering price of $16.00 per share. We received net proceeds of $44.7 million after deducting underwriting discounts, commissions and other offering expenses.