Lori Koch
Chief Financial Officer at DuPont de Nemours
Thanks, Ed, and good morning. Our first-quarter results were clearly encouraging with further signs of electronics recovery mashed with bottoming across our industrial-based end-markets. Additionally, our commitment to drive productivity and operational excellence has minimized decremental margins and has helped to produce significant cash flow improvement in recent quarters. Our results have and will continue to benefit from the restructuring actions announced last November.
Turning to Slide 5, I'll cover our first quarter financial highlights. Net sales of $2.9 billion decreased 3% versus the year-ago period as a 6% organic sales decline and a 1% currency headwind was partially offset by a favorable portfolio benefit of 4% primarily from the Spectrum acquisition. The organic sales decline reflects a 5% decrease in volume and a 1% decrease in price. Lower volume was driven by the impact of continued channel inventory destocking in Water Solutions, mainly in China, and Safety Solutions, most notably for tieback medical packaging and Industrial Solutions for Kalrez parts and Liveo biopharma products. These declines were partially offset by strong growth in electronics, where Semi and Interconnect Solutions volumes increased 8% in aggregate versus the prior year period.
On a segment view, W&P and E&I organic sales declined 10% and 2% respectively, while organic sales in corporate increased 1%. From a regional perspective, sales decreased on an organic basis globally versus the year-ago period with Europe, North America, and Asia Pacific down 8%, 7% and 4%, respectively. In China, sales volumes were up 3% year-over-year as growth in E&I more than offset declines in W&P due to continued pressure in water markets. First quarter operating EBITDA of $682 million decreased 4% as volume declines were partially offset by the impact of lower product costs and Spectrum earnings contribution. Operating EBITDA during the quarter of 23.3% was down 40 basis points versus the year-ago period.
I am pleased with our cash flow improvement as we focus our efforts on optimizing working capital performance. On a continuing operations basis, cash flow from operations of $493 million, plus capital expenditures of $207 million resulted in adjusted free cash flow of $286 million in the first quarter, a significant increase versus $173 million in the year-ago period. Adjusted free cash flow conversion during the quarter was 86%, significantly ahead of last year.
Turning to Slide 6. Adjusted EPS for the quarter of $0.79 per share decreased from $0.84 in the year-ago period. Lower segment earnings, higher net interest expense and higher depreciation more than offset a $0.06 benefit from a lower share count. Our tax rate for the quarter was 24.6%, up from 23.4% in the year-ago period, driven by geographic mix and earnings. Our full year 2024 base tax rate outlook of 23% to 24% remains unchanged.
Turning to segment results, beginning with E&I on Slide 7. E&I first quarter net sales of $1.4 billion increased 5% as the Spectrum sales contribution of 8% was partially offset by an organic sales decline of 2% and a 1% currency headwind. The organic sales decline reflects a 1% decrease in volume and a 1% decrease in price due to the passthrough of lower metal prices. Effective with our first quarter reporting, I will highlight that we realigned certain product lines within our three E&I lines of business. The changes streamline our cost structure while also optimizing certain product offerings to better focus on our customers. Additional detail has been provided on Slide 15 in the appendix.
For the first quarter of 2024, organic sales for Semiconductor Technologies were up 10% versus the year-ago period due to the start of overall semiconductor market demand recovery along with normalization of customer inventory levels and continued strong demand for OLED display materials. We expect underlying semi demand to continue to improve throughout the year and note that our forecast continues to call for semi-fab utilization rates to increase from the low-70s percent that we saw in the first quarter to a fourth quarter exit rate in the low 80s.
Within Interconnect Solutions, organic sales were up slightly as mid-single digit volume gains were mostly offset by the impact of lower metals prices. This was the second consecutive quarter of year-over-year volume growth for ICS as broad electronic markets continued to recover. Organic sales for Industrial Solutions were down about 20% due primarily to ongoing channel inventory destocking for Kalrez O-rings and for Liveo product lines within biopharma markets. We continue to expect to see order improvement over the next several quarters in our Kalrez business, and Liveo biopharma business is also still expected to recover later in the second half. Operating EBITDA from E&I of $374 million was up 3% versus the year-ago period, driven by strength in Semi and Interconnect Solutions and the earnings contribution from Spectrum, partially offset by the impact of lower volumes in Industrial Solutions.
Turning to Slide 8, W&P first quarter net sales of $1.3 billion declined 11% versus the year-ago period due to a 10% decrease in volume and a 1% currency headwind. Within Safety Solutions, organic sales were down low-teens on lower volume driven mainly by channel inventory destocking, most notably for Tyvek medical packaging products. We believe our customers' inventory is close to normal at this point for Tyvek medical packaging. Within Water, organic sales were down mid-teens driven by distributor inventory destocking and lower industrial demand in China. We continue to have active communication with our distributors and believe orders will pickup towards the end of the second quarter.
Shelter Solutions were flat on an organic basis compared to the year-ago period and we expect sequential lift in the second quarter. Operating EBITDA for W&P during the quarter of $295 million decreased 14% due to lower volumes, partially offset by the impact of lower product costs. Turning to Slide 9, I'll provide an update on our full year 2024 guidance as well as our expectations for the second quarter. We are raising our full year guidance for net sales, operating EBITDA and adjusted EPS. At the midpoint of the revised ranges provided, we now expect full year net sales of about $12.25 billion, operating EBITDA of about $2.975 billion and adjusted EPS of $3.60 a share, which now indicates expected year-over-year earnings growth.
For the second quarter of 2024, we expect net sales of about $3.025 billion, operating EBITDA of about $710 million, and adjusted EPS of $0.84 per share. The sequential sales and earnings lift in the second quarter assumes volume improvement driven by favorable seasonality in both ICS and shelter continued electronics recovery and reduced destocking impacts in water and medical packaging. Year-over-year sales and earnings growth in the second half embedded within our full year guidance is expected to be driven by further electronics market recovery, including continued improvement in semiconductor fab and PCB utilization rates, along with our return to volume growth in W&P. Second half earnings drivers include both volume improvement as well as expected mix benefits.
With that, I'll turn it back to Ed.