Total general and administrative expenses for the nine months ended September 30, 2024, decreased by $917,660, or 7% compared to the comparable period in 2023. This decrease was largely due to a decrease of $315,518 in salary and benefits related expenses; a $1,557,932 decrease in non-cash stock-based compensation; a decrease of $160,697 in insurance premiums; a decrease of $141,054 in external consulting expenses; a decrease of $47,796 in recruitment and hiring expenses; and a decrease of $46,257 in travel expenses; partially offset by an increase of $568,938 in legal expenses; an increase of $418,895 in investor relations expenses; and an increase of $342,459 in additional accounting and auditing fees related to the finalization of the 2023 audit.
Depreciation and Amortization. Depreciation and amortization expense, not included in cost of sales, for the nine months ended September 30, 2024, was $2,569,413, compared to $2,896,840 in the comparable period in 2023 or a decrease of $327,427. This decrease was due to a significant decrease in amortization expense related to our Atomistic technology license, which was written-off as of June 30, 2024; partially offset by increases in depreciation related to leasehold improvements being put into service this year related to our new waveguide manufacturing facility.
Impairment on Intangible Asset and Equity Investment. For the nine months ended September 30, 2024 there was a total impairment charge on an intangible and an equity investment of $30,301,355. On July 1, 2024, Atomistic exercised its option to terminate its previously granted license related to certain microLED technologies it was developing, and as a result of the termination of the granted license, which was effective June 30, 2024, the Company determined that the technology license asset of $24,335,554, net book value as of June 30, 2024, was impaired as the Company no longer has exclusive licensing rights to the technology. The Company had a related equity interest in Atomistic, a private French company, and determined that at this point in time, the Company is unable to reasonably estimate a value to its future value and therefore recorded a full impairment of its investment in Atomistic resulting in a write-down charge of $5,664,446 for the period ended June 30, 2024.
The Company retains an equity interest in Atomistic, the right to appoint a member to the Atomistic board of directors and certain other rights as an equity owner pursuant to the stock purchase agreement and shareholders’ agreement entered into in connection with the License Agreement. The Company’s equity interest in Atomistic entitles it to a preferential allocation to 49% of the distributable amounts in the event of a liquidation event, such as an acquisition of Atomistic or its assets. A share of any future royalties it receives from the technology based on the license and the 49% liquidation preferred allocation value, if any, are considered gain contingencies and will not be recorded until any specific events materialize.
Other Income, Net. Total other income was $239,896 for the nine months ended September 30, 2024, compared to other income of $1,618,870 in the comparable period in 2023, a decrease of $1,378,974. The overall decrease in other income was primarily the result of a decrease of $1,371,116 in investment income due to lower excess cash on-hand to invest; an increase of $90,241 in foreign exchange losses; partially offset by a decrease in income and other taxes of $82,383.
Provision for Income Taxes. There was not a provision for income taxes in the respective nine-month periods ending September 30, 2024, and 2023.
Liquidity and Capital Resources
Capital Resources: As of September 30, 2024, we had cash and cash equivalents of $14,271,666, a decrease of $12,283,926 from $26,555,592 as of December 31, 2023.
As of September 30, 2024, we had current assets of $28,711,290 compared to current liabilities of $2,181,398 which resulted in a positive working capital position of $26,529,892. As of December 31, 2023, we had a working capital position of $36,284,259. Our current liabilities are comprised principally of accounts payable, accrued expenses, and operating lease right-of-use liabilities.