Matthew Wolsfeld
Analyst · Van Clemens & Co. Inc
Thanks, Patrick. Compared to the prior fiscal year period, NTIC's consolidated net sales increased 7.7% in fiscal 2023 to an annual record and grew 2.3% in fiscal 2023 fourth quarter because of the positive trends Patrick reviewed in his prepared remarks. While sales across our global joint ventures declined 6.6% in the fourth quarter, joint venture operating income increased 39.6% compared to the prior fiscal year period as a result of a onetime gain on the liquidation of a previously written off investment in our former joint venture in China, Tianjin-Zerust of nearly $2 million. For fiscal 2023, sales across our global joint ventures decreased 3.3%, while joint venture operating income increased nearly 11% compared to the prior fiscal year. Total operating expenses for the fiscal 2023 fourth quarter increased 23.4% to $9.3 million, and for the fiscal 2023 increased $17.6 million to $33.4 million. Higher operating expenses for both the fiscal 2023 fourth quarter and the full year were primarily due to increased personnel expense, other inflationary increases in expenses, and expenses incurred in connection with our new indirect majority-owned subsidiary formed to assume the operations of a former joint venture in Taiwan.
Operating expenses as a percentage of net sales were 44.8% for the fourth quarter compared to 37.1% for the prior fiscal year period. For fiscal 2023, operating expenses as a percentage of net sales were 41.8% compared to 38.3% for the prior fiscal year. Gross profit as a percentage of net sales was 36.5% during the 3 months ended August 31, 2023, compared to 30.3% during the prior fiscal year period. The 620-basis point improvement was primarily a result of successful actions taken by the company to address inflationary pressures and the increased sales of higher gross margin ZERUST Oil & Gas Solutions. Gross profit as a percentage of our net sales was 34.8% for fiscal year ended August 31, 2023, compared to 31.1% for the prior fiscal year. NTIC reported net income of $939,000 or $0.10 per diluted share for the fiscal 2023 fourth quarter compared to $648,000 or $0.07 per diluted share for the fiscal 2022 fourth quarter. For the full year, NTIC reported net income of $2.9 million or $0.30 per diluted share compared to $6.3 million or $0.66 per diluted share for the fiscal 2022 full year. For the fiscal 2023 fourth quarter, NTIC's non-GAAP adjusted income reduced primarily for the onetime gain related to the liquidation of Tianjin-Zerust, which was $280,000 or $0.03 per diluted share compared to non-GAAP adjusted income of $753,000 or $0.08 per diluted share for the fiscal 2022 fourth quarter.
For fiscal 2023, non-GAAP adjusted income was $2.6 million or $0.27 per diluted share compared to $3 million or $0.32 per diluted share for fiscal 2022. For reconciliation of GAAP to non-GAAP financial measures is available in our fourth quarter and full year earnings press release that was issued this morning. As of August 31, 2023, working capital was $23 million, including $5.4 million in cash and cash equivalents compared to $23.2 million, including $5.3 million in cash and cash equivalents as of August 31, 2022. As of August 31, 2023, we had outstanding debt of $6.4 million. This included $3.6 million in borrowings under our existing revolving line of credit compared to $5.9 million as of August 31, 2022.
We generated $5.5 million of operating cash flows for the 12 months ended August 31, 2023, including $2 million in the fourth quarter which was driven primarily by stronger core profitability, lower inventory levels, and the onetime gain from the liquidation of Tianjin-Zerust. On August 31, 2023, the company had $23.7 million of investments in joint ventures, of which 53.6% or $13.8 million was in cash, with the remaining balance primarily invested in other working capital. During the fiscal 2023 fourth quarter, NTIC's Board of Directors declared a quarterly cash dividend of $0.07 per common share that was payable on August 16, 2023, to stakeholders of the record on August 2, 2023.
Before we turn the call over to questions, I want to address the 8-K filing we filed this morning and the amended 10-Qs restating our second and third quarter financial statements. At the start of fiscal 2023, we engaged Deloitte, our tax advisers to analyze NTIC's qualification for employee retention tax credits under the CARES Act. They determined that we qualified for $1.1 million in credit and provided detailed support for that position. As a result, NTIC filed for the payroll credits with the IRS and recorded the credits in second and third quarter based on the application date.
During the year-end closing process, the accounting for the credits was scrutinized and we determined that under U.S. GAAP accounting, we did not allow for the recording of the credits. While we believe the employee retention credit that we applied for in fiscal Q2 and Q3 are more likely than not to be collected, we are unable to deem the receipt of the credits as probable under U.S. GAAP. As a result, we restated NTIC's previously issued Q2 and Q3 financial statements, reflecting a decrease in net income of $474,000 for Q2 and $466,000 for Q3. We filed with the SEC this morning amendments to our second and third quarter 10-Qs with the restated financials as well as an 8-K dealing all the line item changes, and we plan to update investors on the progress we are making collecting the employee retention tax credits.
So with this overview and to conclude our prepared remarks, we continue navigating a fluid business environment, while continuing to pursue our product, end market and geographical diversification strategies. We're seeing stable North American demand trends and robust growth across our global oil and gas and bioplastics markets. While the economic environment remains uncertain, we believe fiscal 2024 will be another good year of sales and increased profitability for NTIC, and we're excited by our long-term prospects.
With this overview, Patrick and I are happy to take your questions.