Total changes in assets and liabilities of approximately $405,000 were attributable to a $475,000 decrease in accounts receivable-unbilled, a $1,073,000 decrease in accounts receivable, partially offset by a $400,000 decrease in accounts payable, a $376,000 decrease in accrued expenses and a $320,000 decrease in deferred revenue and a $48,000 increase in prepaid expenses and other current assets.
For the six months ended June 30, 2021, net cash used in operating activities was approximately $3,269,000, which consisted of a net loss of approximately $5,358,000 offset by non-cash charges of approximately $2,355,000, which primarily includes a $2,740,000 loss on extinguishment of bridge notes, $870,000 of amortization of discount on amended bridge notes, $472,000 related to amortization of internally developed software, a $260,000 loss on extinguishment of convertible notes, $50,000 in stock based compensation, $40,000 in bad debt expense, $22,000 related to depreciation and amortization of property and equipment, and $1,000 of amortization of discount and debt issuance costs on convertible notes partially offset by a $1,312,000 loss on derivative liabilities, and a $788,000 gain on the extinguishment of the note payable. Total changes in assets and liabilities of approximately $265,000 were primarily driven by a $1,707,000 decrease in accrued interest, a $500,000 increase in accounts receivable, a $473,000 increase in accounts receivable-unbilled, a $70,000 decrease in deferred revenue, and a $24,000 increase in prepaid expenses and other current assets, partially offset by a $1,441,000 increase in accounts payable, and an increase in accrued expenses of $1,069,000.
Investing Activities
Net cash used in investing activities was approximately $777,000 and $443,000 for the six months ended June 30, 2022 and 2021, respectively. Net cash used in investing activities for the six months ended June 30, 2022 consisted of approximately $777,000 of capitalization of internally developed software. Net cash used in investing activities for the six months ended June 30, 2021 consisted of $440,331 of capitalization of internally developed software and $2,550 for purchases of property and equipment.
Financing Activities
Net cash provided by financing activities was approximately $83,000 and $16,200,000 for the six months ended June 30, 2022 and 2021, respectively. Net cash provided by financing activities for the six months ended June 30, 2022 consisted mainly of approximately $77,000 in proceeds from the exercise of stock options. Net cash provided by financing activities for the six months ended June 30, 2021 consisted of $18,000,000 of proceeds received from the issuance of common stock in connection with the Company’s initial public offering ( the “IPO”), $500,000 of proceeds received from the issuance of bridge notes payable, and $39,633 of proceeds received from the exercise of stock options, partially offset by $2,339,816 for the payment of offering costs in connection with the issuance of common stock in connection with the IPO.
Effects of Inflation and Supply Chain Shortages
Our operations are heavily reliant on specimen availability, and as a result, we often receive more requests than we can fulfill. While the Company is subject to these types of supply chain constraints that are specific to the specimen industry, we have not been affected by the more common supply chain issues currently affecting the economy, specifically surrounding transportation. Due to the small size of the packages that we ship, our carriers were able to continue making timely deliveries during the six months ended June 30, 2022.
We have experienced negative effects of inflation in certain areas of our business due to the high rates of inflation in the world’s current economy. This inflation is affecting employee salaries, which account for a significant portion of our operating costs. Additionally, costs of supplies have been affected by inflation; however, these costs are not significant to the Company’s results.
Inflation has not had a significant impact on the cost of specimens due to our long-term contracts maintained with vendors, which include revenue sharing plans.
Non-GAAP Financial Measure
To supplement our financial statements, which are prepared and presented in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”), we use adjusted earnings before interest, taxes, depreciation, and amortization (“Adjusted EBITDA”), a non-GAAP financial measure, to understand and evaluate our core operating performance. This non-GAAP financial measure, which may be different than similarly titled measures used by other companies, is presented to enhance investors’ overall understanding of our financial performance and should not be considered a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP.