Other Income, Net. Total other income was $1,618,870 for the nine months ended September 30, 2023, compared to other income of $375,603 in the comparable period in 2022, an increase of $1,243,267. The overall increase in other income was primarily the result of an increase of $1,134,745 in investment income due to higher interest rates earned on excess cash invested; and a decrease in foreign exchange losses of $154,725; partially offset by an increase of $46,203 in income and other taxes.
Provision for Income Taxes. There was not a provision for income taxes in the respective nine-month periods ending September 30, 2023, and 2022.
Liquidity and Capital Resources
Capital Resources: As of September 30, 2023, we had cash and cash equivalents of $38,049,037, a decrease of $34,514,906 from $72,563,943 as of December 31, 2022.
As of September 30, 2023, we had current assets of $59,610,255 compared to current liabilities of $5,144,189 which resulted in a positive working capital position of $54,466,066. As of December 31, 2022, we had a working capital position of $75,963,883. Our current liabilities are comprised principally of accounts payable, accrued expenses, licensing fee commitments, and operating lease right-of-use liabilities.
Summary of Cash Flow:
The following table summarizes our select cash flows for the nine months ended:
| | September 30, | | September 30, |
| | 2023 | | 2022 |
Net Cash Provided by (used in) | | | | | | |
Operating Activities | | $ | (20,133,643) | | | $ (17,935,375) |
Investing Activities | | | (13,931,702) | | | (11,691,543) |
Financing Activities | | | (449,561) | | | (202,552) |
During the nine months ended September 30, 2023, we used $20,133,643 of cash for operating activities. Net changes in working capital items were $3,810,043 for the nine months ended September 30, 2023, with the largest factors resulting from a $3,094,404 increase in trade accounts receivable and accrued revenue in excess of billings, partially offset by receipt of $466,705 for our Employee Retention Credit, which was filed with the IRS in November 2022; a $141,450 decrease in inventory and vendor prepayments; and a $190,744 decrease in trade accounts payable and accrued expenses. For the nine months ended September 30, 2022, we used a total of $17,935,375 in cash for operating activities.
During the nine months ended September 30, 2023, we used $13,931,702 of cash for investing activities, which included $9,500,000 in payments made towards our technology license fee commitment with Atomistic, as discussed in Note 6, $3,608,801 for purchases of manufacturing equipment and leasehold improvement expenditures primarily related to our waveguide expansion project; $497,901 in patent and trademark expenditures; a further investment of $125,000 in the purchase of software operating license upgrades for our smart glasses platform; and an additional $200,000 of investments in private corporations as discussed in Note 7. For the nine months ended September 30, 2022, we used a total of $11,691,543 in cash for investing activities.
During the nine months ending September 30, 2023, we used $449,561 in net cash for financing activities, which included $21,196 received for stock option exercises, which was offset by $470,757 expended for share repurchases under our Share Buyback Program that expired on March 2, 2023. For the nine months ended September 30, 2022, we used $202,552 in net cash for financing activities.
As of September 30, 2023, the Company does not have any current or long-term debt obligations outstanding other than licensing fee commitments totaling $2,000,000, which are all current.