Item 7A. Quantitative and Qualitative Disclosures About Market Risk
Item 7A. Quantitative and Qualitative Disclosures about Market Risk.
The primary objectives of our investment activities are to ensure liquidity and to preserve principal while at the same time maximizing the income we receive from our marketable securities without significantly increasing risk. Some of the securities that we invest in may have market risk related to changes in interest rates. As of December 31, 2021, we had cash and cash equivalents of $34.6 million, primarily held in money market funds, consisting of U.S. government-backed securities, and interest-bearing money market accounts. As of December 31, 2021, we had short-term investments of $4.5 million consisting of debt instruments of corporations, the U.S. Treasury, financial institutions, and U.S. government agencies with strong credit ratings and an investment grade rating at or above a long-term rating of Aa3/AA- and a short-term rating of P1/A1. Our primary exposure to market risk is interest rate sensitivity, which is affected by changes in the general level of U.S. interest rates. Due to the short-term maturities of our cash equivalents and the low risk profile of our investments, an immediate 100 basis point change in interest rates would not have a material effect on the fair market value of our cash equivalents. To minimize the risk in the future, we intend to maintain our portfolio of cash equivalents and short-term investments in a variety of securities, including commercial paper, money market funds, government and non-government debt securities and corporate obligations.
We are subject to interest rate risk in connection with our borrowings under the MidCap Credit Agreement. The remaining principal balance outstanding of $7.5 million as of December 31, 2021 under the MidCap Credit Agreement bears interest at a floating rate equal to 6.25% per annum, plus the greater of (i) 1.50% or (ii) one-month LIBOR. We currently do not engage in any interest rate hedging activity and we have no intention to do so in the foreseeable future. Based on the current interest rate of the term loan with Hercules and the scheduled payments thereunder, we believe a 100 basis point increase in interest rates would not have a material impact on our financial condition or results of operations.
While we contract with certain vendors internationally, substantially all of our total liabilities as of December 31, 2021 were denominated in U.S dollars and we believe that we do not have any material exposure to foreign currency exchange rate risk.
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