The following table provides the loans payable reported at fair value and measured on a recurring basis:

(in thousands)	Loans Payable
Balance at December 31, 2019	$	—
Issuance of 2020 Notes and Bridge Loan		16,800
Issuance of repurchase payable for the Lilly Asia Ventures option exercise		10,771
Issuance of loans payable for conversion settlement of the Bridge Loan		2,109
Conversion of 2020 convertible promissory notes to Series C convertible preferred stock		(17,690	)
Conversion of Bridge Loan to Series C convertible preferred stock		(2,163	)
Change in fair value of loans payable and other adjustments		3,053
Balance at December 31, 2020	$	12,880

In May 2020, the Company issued convertible promissory notes (2020 Notes) in the aggregate amount of $15.0 million. The 2020 Notes bear interest at a rate of 10.0% per annum, are unsecured, and are due and payable, including accrued interest, in May 2021. In connection with the Series C Convertible Preferred Stock Financing, the 2020 Notes, totaling unpaid principal and accrued interest of $15.9 million, converted into 1,366,820 shares of Series C convertible preferred stock.

In May 2020, the Company entered into a bridge loan with Terns China (Bridge Loan) for aggregate proceeds of $1.8 million, payable in renminbi (RMB) at an established USD/RMB exchange rate, based on an average of the previous five working days before May 8, 2020. The Bridge Loan bears interest at a rate of 10% per year, which began to accrue on the date of drawdown, and is computed based on the actual number of days elapsed based on a year of 365 days. The Bridge Loan holders has the same conversion rights as the 2020 Notes holders.

In connection with the closing of the Series C convertible preferred stock financing in December 2020, entities that are a part of LAV agreed to effectively convert the Bridge Loan into shares of Series C preferred stock on the same terms as the 2020 Notes. The conversion will be based on an outstanding loan balance equal to $1.9 million, consisting of (i) the principal loan amount ($1.8 million) plus (ii) accrued interest through December 29, 2020 ($0.1 million).

To help facilitate the transfer of cash from China to the United States to effectively convert the Bridge Loan, the Company and Terns China agreed to enter into an agreement with LAV to (i) repay the Bridge Loan, and (ii) issue shares of Series C convertible preferred stock at the initial closing of the Series C financing to entities that are a part of Lilly Asia Ventures in exchange for a promissory note issued to the Company by LAV, or the LAV Affiliate Promissory Note.

The Bridge Loan was repaid in full by the Company following the requisite government approvals in China. Proceeds from the repayment of the Bridge Loan by Terns China were used by LAV to repay the LAV Affiliate Promissory Note in full. The fair value of the Bridge Loan was determined to be $2.1 million as of December 31, 2020. The Bridge Loan and the LAV Affiliate Promissory Note were paid in full in March 2021.

In November 2020, the Chinese government provided approval for entities affiliated with Lilly Asia Ventures (LAV) to exercise the LAV Option (see Note 4, Convertible Preferred Stock). Terns Hong Kong agreed to repurchase all equity interests held by the LAV PRC Entities with proceeds to be used by LAV to purchase shares of Series A convertible preferred stock and Series B convertible preferred stock of the Company (Repurchase).

In December 2020, the Company issued 767,857 shares of Series A convertible preferred stock and 216,450 shares of Series B convertible preferred stock to an affiliate of LAV (LAV Affiliate) in exchange for a promissory note with a principal amount equal to

the original investment by LAV in Terns China (LAV Series A and Series B Promissory Note). The LAV Series A and Series B Promissory Note was repaid through proceeds of the Repurchase which was completed in January 2021.

The carrying value of the LAV Series A and Series B Promissory Notes approximate its fair value due to the short-term nature of the liability.

The fair value of the loans payable liability was determined based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The fair value of the loans payable liability is remeasured at each reporting period, with changes in fair value recognized in the condensed consolidated statements of operations.

During 2020, the Company used the PWERM method to value the loans payable. This approach involved the estimation of future potential outcomes for the Company, as well as values and probabilities associated with each respective potential outcome. The Company considered two scenarios (i) a 60% probability of an IPO in the near-term and (ii) a 40% probability of the Company remaining private for 1.75 years following the date of the valuation. The Company considered these two scenarios to calculate the (i) future value of the loans payable under each scenario and (ii) the present value of the loans payable under each scenario. The value of the Company’s equity used to determine the appropriate allocation of value to the stockholders was calculated using different methodologies for each scenario. For the first scenario, the value of the Company’s equity was estimated based on the Company’s estimates, as well as recent IPO indications of comparable companies. For the second scenario, the value of the Company’s equity was estimated using the income approach, which focuses on the income-producing capability of a business and estimates value based on the expectation of future cash flows, which are then discounted to the present using a rate of return that incorporates the risk-free rate for the use of funds, the expected rate of inflation, and risks associated with the particular investment. Under each scenario, the rights and preferences of each share class were considered in order to determine the appropriate allocation of value to the common and preferred stockholders, as well as the loans payable. The value per common and preferred share, as well as the loans payable, under each scenario was multiplied by a present value factor, calculated based on the Company’s cost of equity and the expected timing of each scenario. After taking into consideration the PWERM of each scenario, the Company arrived at the fair value of the loans payable.

The Company recorded other expense of $2.9 million related to the change in the fair value of loans payable for the year ended December 31, 2020.

The outstanding LAV Series A and Series B Promissory Note was settled in January 2021 and was paid with the proceeds received from the note receivable of $10.8 million. The outstanding Bridge Loan was settled in March 2021 and was substantially paid with the proceeds received from the LAV Affiliate Promissory Note receivable of $1.9 million.