Company: BLLN
Filing Date: 2025-06-20
Form Type: DRS
Source: 0000950123-25-006095
Chunk: 310

Company: BillionToOne, Inc.
Filing Date: 2025-06-20
Form: DRS
Chunk 310
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 Debt

Western Alliance Bank Debt

In October 2021, the Company
entered into a loan and security agreement (the “2021 LSA”) with WAB, which provided the Company with three tranches of capital advances totaling $15.0 million. The loan is collateralized

F-26

B ILLIONT OO NE, INC.

Notes to Financial Statements

by all property of the Company other than its Intellectual Property (“IP”). The advanced principal accrued interest based on the floating prime rate per annum, which was 3.25% at
December 31, 2021. The first tranche of $5.0 million was advanced on October 12, 2021 and the second tranche was advanced on December 17, 2021, both with a maturity date of October 12, 2025 and interest-only payments, at the
floating rate, through May 1, 2023 and 30 equal monthly payments thereafter, of principal and interest. The Company drew down the third tranche on January 3, 2022 and elected to extend the interest only period by an additional 6 months
followed by 24 months of amortization. The loans include a final payment of 3.75% of the advanced amount, or $562,500, due upon the earlier of maturity or termination of the loan. The final payment was accreted to interest expense over the term of
the loan. The term loan advances are secured by a lien on the Company’s assets.

In July 2022, the Company amended its October 2021 loan and security
agreement with WAB, such that WAB made four tranches of capital advances available to the Company for an aggregate amount up to $35.0 million (“2022 LSA Amendment”). The advanced principal will accrue interest based on the floating
prime rate per annum, which was 8.5% at December 31, 2023.

Under the 2022 LSA Amendment, the first tranche of $20.0 million in principal was
advanced on July 22, 2022 and was used to pay off the existing $15.0 million in principal outstanding to WAB under the 2021 LSA, resulting in net proceeds to the Company of $5.0 million. The second tranche of $5.0 million in
principal was advanced on January 25, 2023 and the third tranche of $5.0 million in principal