Borrowings
Perceptive Term Loan Facility
On April 25, 2025, the Company entered into a Credit Agreement and Guaranty (the Credit Agreement) with Perceptive, which originally provided for a senior secured delayed draw term loan facility in an aggregate principal amount of up to $75.0 million (the Perceptive Term Loan Facility) broken into four tranches. An initial tranche of $25.0 million (the Tranche A Loan) was funded on April 25, 2025, of which $19.7 million was used to repay the 2017 Term Loan (as defined below) with Innovatus Life Sciences Lending Fund I, LP (Innovatus). The original Credit Agreement provided for four additional tranches of funding up to $10.0 million (the Tranche B Loan), up to $10.0 million (the Tranche C Loan), and up to $30.0 million (the Tranche D Loan, and collectively with the Tranche A Loan, the Tranche B Loan and the Tranche C Loan, the Term Loans) to be drawn at the Company's option subject to the Company’s satisfaction of certain conditions, including specified revenue milestones. On March 6, 2026, the
Company and Perceptive amended the Credit Agreement, and the Tranche C loan concept was removed from the Credit Agreement. See "Note 13. Subsequent Events" for more information.
The Perceptive Term Loan Facility matures on April 25, 2030, and includes an interest-only period through maturity, with all outstanding principal and accrued interest due on the maturity date.
The Perceptive Term Loan Facility accrues interest at an annual rate equal to the greater of (i) Term Secured Overnight Financing Rate (SOFR) or (ii) 4.75%, plus a margin of 7.0% (the Applicable Margin), payable monthly in arrears. Upon the occurrence and during the continuance of an event of default, the Applicable Margin may be increased by 4.0% at Perceptive’s election. The Company may prepay the Term Loans at any time, subject to prepayment premiums ranging from 2.0% to 10.0% of the principal amount, depending on the date of prepayment.
The Credit Agreement is secured by a first-priority lien on substantially all of the Company’s existing and future assets and includes customary affirmative, negative, and financial covenants. These include, among others, restrictions on additional indebtedness, liens, dividends, mergers and acquisitions, and affiliate transactions. The Credit Agreement also requires that the Company maintain a minimum unrestricted cash balance of $3.0 million and achieve specified net revenue levels on a quarterly basis. As of December 31, 2025, the Company was in compliance with all covenants required under the Credit Agreement.
In addition, on April 25, 2025, as consideration for the Credit Agreement, the Company issued to Perceptive the Warrant Certificate. The 400,000 Tranche A Warrant Shares vested and became exercisable on the date of issuance, and warrants to purchase up to 750,000 shares of the Company's common stock were subject to vest and would become exercisable if and when the additional debt tranches were drawn by the Company. As a result of the March 2026 amendment to the Credit Agreement, 600,000 shares of the Company common stock may vest and become exercisable if and when the remaining additional debt tranches are drawn by the Company. See “Note 13. Subsequent Events” for more information.
The Warrant Certificate has a ten-year term from the applicable vesting date and includes broad-based weighted anti-dilution protection for certain dilutive issuances and for certain recapitalization events and registration rights provisions. In November 2025, Perceptive exercised all 400,000 Tranche A Warrant Shares on a cashless basis and the Company issued a total of 173,220 shares of the common stock to Perceptive.
The Company concluded that the Warrant Certificate qualifies for liability classification and recorded the fair value at issuance of the Tranche A Warrant Shares of $2.2 million as a debt discount. The Company also recognized debt issuance costs of $1.4 million as additional debt discount. These amounts are amortized over the remaining term of the Perceptive Term Loan Facility under the effective interest method. The proportionate amount of the upfront closing fee paid of $1.1 million and the fair value of $1.3 million related to the contingent warrants that may be issued for future debt tranches are recorded as a loan commitment asset and amortized as discussed in "Note 2. Summary of Significant Accounting Policies."
For the year ended December 31, 2025, the Company recognized $3.1 million of interest expense, including $0.3 million of debt discount amortization in connection with the Perceptive Term Loan Facility. The effective interest rate was 16.2% per annum. As of December 31, 2025, the Perceptive Term Loan Facility had a carrying value of $21.7 million, classified within borrowings, non-current, net of discounts and debt issuance costs in the accompanying balance sheets.
2017 Term Loan
In September 2017, the Company executed a term loan agreement (the 2017 Term Loan) with Innovatus, as amended (the Amended Loan Agreement), pursuant to which the Company borrowed $25.0 million. As of March 31, 2025, the 2017 Term Loan was fully drawn with an outstanding principal balance of $19.8 million and a carrying value of $19.3 million. The interest rate on all borrowings under the Amended Loan Agreement was the sum of (a) the greater of 8.0% or The Wall Street Journal prime rate plus (b) 2.0%. Interest on any outstanding term loan advances was due and payable monthly, unless the Company elected to pay paid-in-kind interest. In addition to the monthly interest payments, a final payment equal to $1.0 million was due the earlier of the maturity date or the date the advance is repaid. Principal balances were required to be repaid in 24 equal installments which began on August 1, 2023.
On April 25, 2025, the Company fully repaid all $19.7 million in outstanding indebtedness owed to Innovatus pursuant to its Amended Loan Agreement and terminated the agreement. During the year ended December 31,
2025, the Company recognized a $0.3 million loss on extinguishment of debt in connection with the early repayment of the 2017 Term Loan on the Company's statements of operations.
Equipment Notes Payable
In May 2022, the Company purchased laboratory equipment in the normal course of business using notes payable. In January 2025, the Company entered into a financing arrangement to procure additional laboratory equipment. At December 31, 2025, the total liability balance related to the financed equipment was $1.2 million, with $0.6 million classified within borrowings, current and $0.6 million within borrowings, non-current, net of discounts and debt issuance costs in the accompanying balance sheets. At December 31, 2024, the total liability balance related to the financed equipment was $1.1 million, with $0.4 million classified within borrowings, current and $0.7 million within borrowings, non-current, net of discounts and debt issuance costs in the accompanying balance sheets. The financed equipment is subject to effective interest rates between 5.28% and 10.50%, and will mature between October 1, 2026 and April 1, 2028.
Future Minimum Payments on the Outstanding Borrowings
As of December 31, 2025, future minimum aggregate payments, including interest, for outstanding borrowings are as follows (in thousands):
| | | | | | | | |
| | Years Ending December 31, |
| 2026 | | $ | 3,700 | |
| 2027 | | 3,450 | |
| 2028 | | 3,117 | |
| 2029 | | 2,978 | |
| 2030 | | 25,930 | |
| | |
| Total | | 39,175 | |
| Less: | | |
| Unamortized debt discount and issuance costs | | (3,302) | |
| Interest | | (12,966) | |
| Total borrowings, net of discounts and debt issuance costs | | 22,907 | |
| Less: Borrowings-current portion | | (643) | |
| Borrowings-non-current portion, net of discounts and debt issuance costs | | $ | 22,264 | |