The Company’s leases include facility leases and storage leases. In determining the present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the lease commencement date if the rate implicit in the lease is not readily determinable. The Company estimates its incremental borrowing rate based on qualitative factors including company specific credit offers, lease term, general economics, and the interest rate environment. In determining the lease term, the Company includes all renewal options that are reasonably probable to be executed.

During the first quarter of 2021, the Company renewed its lease on its corporate headquarters in Menlo Park, California. The lease commenced in early August 2021 and is for a term of 37 months from the commencement

date. The Company recorded an aggregate right-of-use ("ROU") asset and lease liability of $1.5 million. The ROU asset and corresponding lease liability were estimated using a weighted-average incremental borrowing rate of 13.59%. Total base rent is approximately $1.6 million under the lease agreement.

During the fourth quarter of 2022, the Company entered into a supply agreement that is expected to last approximately 18 months. The supply agreement contained provisions that, when evaluated, indicated an embedded lease was present within the agreement. The agreement commenced in early December 2022 and the Company recorded an aggregate ROU asset and lease liability of $0.7 million. The ROU asset and corresponding lease liability were estimated using a weighted-average incremental borrowing rate of 10.75%. Total base rent under the agreement is approximately $0.7 million.

The Company recognizes rent expense on a straight-line basis over the noncancelable lease term. The Company’s rent expense was $0.3 million and $0.2 million for the three months ended March 31, 2023 and 2022, respectively. As of March 31, 2023, the weighted average remaining lease term for the leases was 1.3 years.

Operating lease expense and supplemental cash flow information related to operating leases for the three months ended March 31, 2023 and 2022 were as follows (in thousands):


	Three Months Ended March 31,
	2023		2022
Operating lease expense	$	293	$	173
Cash paid for operating leases		297		170

Aggregate future minimum lease payments at March 31, 2023, under these noncancelable operating leases were as follows (in thousands):


	As of March 31,
	2023
2023 (remainder)		887
2024		662
Total future minimum lease payments	$	1,549
Less: imputed interest		(127	)
Present value of future minimum lease payments	$	1,422
Less: current portion of operating lease liability		(1,069	)
Operating lease liabilities – noncurrent	$	353

On September 16, 2021, the Company filed suit in the U.S. District Court for the District of Delaware (C.A. No. 1:21-cv-01317) alleging that Ivantis, Inc. ("Ivantis") directly and indirectly infringes U.S. Patent Nos. 8,287,482, 9,370,443, 9,486,361, and 10,314,742 by making, using, selling, and offering for sale the Hydrus® Microstent. The Company’s Complaint seeks money damages and injunctive relief. On January 24, 2022, Ivantis asserted counterclaims requesting declaratory judgments that the Company's asserted patents-in-suit are not infringed and/or invalid. On August 1, 2022, the Company filed an amended complaint alleging that Alcon Inc., Alcon Vision, LLC and Alcon Research, LLC (collectively, "Alcon") infringe the four originally asserted patents by making, using, selling, and offering for sale the Hydrus® Microstent, and that all defendants also infringe U.S. Patent No. 11,389,328. The defendants reasserted counterclaims requesting declaratory judgments that the Company’s asserted patents-in-suit are not infringed and/or invalid. A five-day jury trial is scheduled to commence on April 8, 2024. Ivantis and Alcon filed petitions with the U.S. Patent Office seeking inter partes review of U.S. Patent Nos. 8,287,482, 9,370,443, 9,486,361, and 10,314,742 (IPR2022-01529, IPR2022-01530, IPR2022-01533, IPR2022-01540), each of which the U.S. Patent Office denied for raising prior art reference and invalidity arguments that were cumulative of those previously considered by the Office. The Company is presently unable to

predict the outcome of this lawsuit or to reasonably estimate the potential financial impact of the lawsuit on the Company, if any.

The Company is subject to claims and assessments from time to time in the ordinary course of business. Accruals for litigation and contingencies are reflected in the financial statements based on management’s assessment, including the advice of legal counsel, of the expected outcome of litigation or other dispute resolution proceedings, and/or the expected resolution of contingencies. Liabilities for estimated losses are accrued if the potential losses from any claims or legal proceedings are considered probable and the amounts can be reasonably estimated. Significant judgment is required in both the determination of probability of loss and the determination as to whether the amount can be reasonably estimated. Accruals are based only on information available at the time of the assessment due to the uncertain nature of such matters. As additional information becomes available, management reassesses potential liabilities related to pending claims and litigation and may revise its previous estimates, which could materially affect the Company’s results of operations in a given period. As of March 31, 2023 the Company does not believe it was a party to any legal proceedings or claims which, if determined adversely, would, individually or taken together, have a material adverse effect on its business, financial condition, operating results, liquidity or future prospects. However, regardless of the merits of the claims raised or the outcome, legal proceedings and claims may have an adverse impact on the Company as a result of defense and settlement costs, diversion of management time and resources, and other factors.

In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made against the Company in the future, but that have not yet been made. To date, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations.

The Company indemnifies each of its directors and officers (each an "Indemnitee") for certain events or occurrences, subject to certain limits, while the director is or was serving at the Company’s request in such capacity, as permitted under Delaware law and in accordance with its certificate of incorporation and bylaws. The term of the indemnification period lasts as long as an indemnitee may be subject to any proceeding arising out of acts or omissions of such indemnitee in such capacity. The maximum amount of potential future indemnification is unlimited; however, the Company currently holds director and officer liability insurance. This insurance allows the transfer of risk associated with the Company’s exposure and may enable it to recover a portion of any future amounts paid. The Company believes that the fair value of these indemnification obligations is minimal. Accordingly, the Company has not recognized any liabilities relating to these obligations as of March 31, 2023 or December 31, 2022.