to additional personnel costs, including share-based compensation, resulting from increases in headcount, of $0.9 million, partially offset by lower travel costs and other marketing costs of $0.2 million.
General and Administrative Expenses. General and administrative expenses were $7.5 million for the six months ended June 30, 2025, compared to $5.6 million for the same period in 2024, an increase of $1.9 million, or 34%. This increase was due primarily to higher bad debt expense of $0.7 million, higher personnel costs, including share-based compensation, of $0.7 million, higher professional service fees of $0.3 million, and higher IT costs of $0.2 million.
Interest Income, net. Net interest income was $0.1 million for the six months ended June 30, 2025, compared to $0.4 million for the six months ended June 30, 2024. The decrease in net interest income is mainly as a result of decreased investment in U.S. Government securities.
Liquidity and Capital Resources
We have incurred net losses since our inception, which has resulted in a cumulative deficit at June 30, 2025 of $203.2 million. In addition, our use of cash from operations amounted to $8.7 million for the six months ended June 30, 2025, and $9.0 million for the year ended December 31, 2024. Since inception, we have financed our operations principally from the sale of equity securities and the issuance of notes payable.
In May 2025, the Company entered into the 2025 SPA with the 2025 Investor relating to the purchase and sale in a registered direct offering of an aggregate of 275,808 shares of Company’s common stock, par value $0.01 per share at a price of $12.69 per share, based on the trailing 30-trading day volume-weighted average price of the Company’s common stock. The aggregate net proceeds to the Company from the offering totaled approximately $3.3 million after deducting offering expenses payable by the Company.
Contemporaneously with the 2025 SPA, the Company entered into the 2025 NPA under which the Company may sell to the 2025 Investor, and the 2025 Investor may buy from the Company, tranches of notes in an aggregate principal amount of up to $105.0 million. As of June 30, 2025, the net proceeds in connection with the issuance of the First Purchase Note, after deducting the debt discount and debt issuance costs of $0.6 million and $0.7 million, respectively, was approximately $28.7 million.
In March 2024, we completed a public offering of 2,653,848 shares of our common stock from which the net proceeds totaled approximately $16.2 million after deducting our payment of underwriting discounts and commissions and other offering expenses. In November 2024, we entered into an ATM Agreement pursuant to which we may offer and sell, from time to time, shares of our common stock, having aggregate sales proceeds of up to $50 million, subject to the terms and conditions of the ATM Agreement. We have not issued any shares of common stock under the ATM Agreement.
Additional information with respect to the stock offerings and the 2025 NPA is in Notes 8 and 6, respectively, to the condensed consolidated financial statements included in Part 1, Item 1 in this Quarterly Report.
As a result of these transactions and our business operations, our cash and cash equivalents totaled $41.5 million at June 30, 2025. In management’s opinion, based on our current forecasts for revenue, expense and cash flows, our existing cash and cash equivalent balances at June 30, 2025, are sufficient to support our operations and meet our obligations for at least the next twelve months.