Other costs increased $324 thousand for the three months ended March 31, 2025, compared to the same period in 2024. Other costs include expenses incurred for franchise and other taxes, travel, supplies, insurance, depreciation, and other miscellaneous charges. The change was primarily attributable to decreases in insurance costs.
Other Income and Expense
Other income and expenses include non-operating income and expense items not otherwise recorded in our consolidated statement of comprehensive loss. These items include but are not limited to interest income earned and fixed asset disposals. Interest income increased $813 thousand primarily related to higher interest income on increased cash deposits as a result of the August 2024 Offering and the March 2025 Offering. The company had no interest expense for three months ended March 31, 2025 and $8 thousand for three months ended March 31,2024.
Liquidity, Capital Resources and Plan of Operation
We have incurred losses since our inception and, as of March 31, 2025, we had an accumulated deficit of $325.3 million. We will continue to incur losses until we generate sufficient revenue to offset our expenses, and we anticipate that we will continue to incur net losses for at least the next several years. We expect to incur additional expenses related to our development and potential commercialization of levosimendan and, over the long term, imatinib for PAH, and other potential indications, as well as identifying and developing other potential product candidates, and as a result, we will need to generate significant net product sales, royalty and other revenues to achieve profitability.
The process of conducting preclinical studies and clinical trials necessary to obtain approval from the United States Food and Drug Administration is costly and time consuming. The probability of success for each product candidate and clinical trial may be affected by a variety of factors, including, among other things, the quality of the product candidate’s early clinical data, investment in the program, competition, manufacturing capabilities and commercial viability. As a result of the uncertainties discussed above, uncertainty associated with clinical trial enrollment and risks inherent in the development process, we are unable to determine the duration and completion costs of current or future clinical stages of our product candidates or when, or to what extent, we will generate revenues from the commercialization and sale of any of our product candidates. Development timelines, probability of success and development costs vary widely. We are currently focused on developing our two product candidates, levosimendan and imatinib, and have prioritized levosimendan; however, we will need substantial additional capital in the future in order to finalize the development of levosimendan, commence its commercialization, potentially develop imatinib, and to continue with the development of other potential product candidates.
Liquidity
We have financed our operations since September 1990 through the issuance of debt and equity securities and loans from stockholders. We had total current assets of $112.1 million and $96.7 million and working capital of $109.3 million and $92.0 million as of March 31, 2025 and December 31, 2024, respectively. Our practice is to invest excess cash, where available, in short-term money market investment instruments and high quality corporate and government bonds.
We are currently conducting the LEVEL trial and intend to recruit patients through approximately the end of 2025. Our ability to continue to pursue development of our products, including completion of a second Phase 3 oral levosimendan trial, beyond 2027, will depend on obtaining license income, income from warrants exercised by investors should they elect to do so, or outside financial resources. There is no assurance that we will obtain any license agreement or outside financing or that we will otherwise succeed in obtaining any necessary resources.
Financings
On March 5, 2025, we sold in the March 2025 Offering an aggregate of 378,346 shares of our common stock and pre-funded warrants to purchase an aggregate of 3,760,726 shares of our common stock at an offering price of $6.04 per share of common stock and $6.03 per pre-funded warrant, resulting in gross proceeds of $25.0 million. The pre-funded warrants do not expire and have an exercise price of $0.01. Net proceeds from the offering were $23.2 million, after deducting the placement agent fees and offering expenses payable by the Company.
On August 8, 2024, we sold in the August 2024 Offering an aggregate of 1,450,661 shares of our common stock, and pre-funded warrants to purchase 31,882,671 shares of our common stock, along with accompanying warrants to purchase up to 16,666,666 shares of our common stock. The purchase price for each share and accompanying warrant was $3.00, with the accompanying warrant having an exercise price of $4.50 (provided, the purchase price for each pre-funded warrant and accompanying warrant was $2.99, with the pre-funded warrants having an exercise price of $0.01). Net proceeds from the offering were $92.3 million, after deducting the placement agent fees and offering expenses payable by the Company.