In May 2023, the Company completed the Private Placement (as defined below), which included the issuance of warrants (the “Warrants”) to purchase an aggregate of 4,367 shares of common stock (the “Warrant Shares”). Fifty percent of the Warrants have an exercise price equal to $2.45 per share (the “Series A Warrant”), and 50% of the Warrants have an exercise price equal to $3.0625 per share (the “Series B Warrant”), subject in each instance to adjustments as provided under the terms of the Warrants. Refer to Note 12, Redeemable Convertible Preferred Stock, for more details related to the Private Placement.

Upon the occurrence of certain transactions (“Fundamental Transactions,” as defined below), the Warrants provide that they are redeemable by the holder thereof for a value determined using a Black Scholes option pricing model with inputs calculated as described in the applicable Warrant, which includes a 100% floor on the volatility input to be utilized. The Company has determined that this provision introduces leverage to the holders of the Warrants that could

result in a value that would be greater than the settlement amount of a fixed-for-fixed option on the Company’s own equity shares. Accordingly, pursuant to ASC 815, the Company classified the fair value of the Warrants as a liability to be re-measured at the end of every reporting period with the change in value reported in the statements of operations. Of the $20,000 gross proceeds for the Private Placement, $5,605 was allocated to the Warrants and the remaining $14,395 was allocated to the Series A Redeemable Convertible Preferred Stock.

The Company estimated the fair value of the warrant liabilities using recently quoted market prices of the Company's common stock and the Black-Scholes option pricing model. The fair value of the warrant liabilities was estimated using the following assumptions as of December 31, 2023 and May 18, 2023:


	December 31, 2023		May 18, 2023 (date issued)
Risk-free interest rate	3.8%		3.7%
Expected term (years)		4.4		5.0
Expected volatility	55%		55%
Dividends	0.0%		0.0%

Expected term: The expected term for the warrant liabilities was based on the remaining contractual term of the Warrants.

Risk-free interest rate: The risk-free interest rate was based on the rates paid on securities issued by the U.S. Treasury with a term approximating the expected term.

Expected volatility: The expected volatility for the warrant liabilities was based on an index of the historical volatilities of a group of comparable publicly-traded medical device and other peer companies, which the Company believed was representative of the volatility of its common stock.

Expected dividend yield: The Company does not intend to pay dividends for the foreseeable future. Accordingly, the Company used a dividend yield of zero in the assumptions.