Greg Lovins
Senior Vice President and Chief Financial Officer at Avery Dennison
Thanks, Deon. Hello, everybody. I'll first provide some additional color on our fourth quarter results and our performance against our long-term targets, then walk you through our 2024 outlook.
In the fourth quarter, we delivered adjusted earnings per share of $2.16 in line with our expectations up sequentially and up 31% compared to prior year, driven by benefits from higher volume and productivity. Compared to prior year, sales were up 3% ex. currency and 1% on an organic basis as higher volume was partially offset by deflation-related price reductions.
Adjusted EBITDA margin was strong at 16% in the quarter, up 3 points compared to prior year, with adjusted EBITDA dollars up 29% compared to prior year and also up sequentially. We generated strong adjusted free cash flow of $218 million in the fourth quarter and nearly $600 million for the full year. With our working capital metrics on target to end the year, resulting in more than 100% adjusted free cash flow conversion.
We invested $285 million in fixed capital and information technology in the year, paring back investments in our base given the lower volume environment while continuing to invest in our high value categories, particularly Intelligent Labels. And our balance sheet remains strong with a net debt to adjusted EBITDA ratio at year end of 2.4. And we're continuing to execute our disciplined capital allocation strategy, including strategic acquisitions and continuing to return cash to shareholders. In 2023, we returned nearly $400 million to shareholders through a combination of our growing dividend and share repurchases, and we deployed roughly $225 million for M&A.
Turning to segment results for the fourth quarter. Materials Group sales were down 4% ex. currency and on an organic basis driven by low single-digit volume growth, which was more than offset by deflation-related price reductions in product mix. Inventory destocking downstream from us continued to moderate. As you can see on slide six, label volume in North America and Europe combined continued to improve, particularly in Europe. Volume also continues to improve through the first four weeks of this year.
Looking at Label Materials' organic volume trends versus prior year in the quarter, North America was down slightly more than we anticipated, given destocking in the fourth quarter at our customers and with retailers and brands managing their year-end working capital. We believe inventory destocking in North America is now largely complete.
Europe was up high single digits as it began to lap the destocking, which started midway through the fourth quarter in 2022. Asia Pacific was up low single digits and Latin America was up low-teens following a softer Q3 and up mid single digits for the second half. Also compared to prior year, Graphics and Reflectives sales were up mid single digits organically and Performance Tapes and Medical were down low to mid single digits.
Materials Group delivered a strong adjusted EBITDA margin of 16.2% in the fourth quarter, up 340 basis points compared to prior year, driven by benefits from productivity and the net impact of pricing and raw material input costs. GAAP operating margin was 12% in the quarter, which included an impact from the significant devaluation of the Argentine peso in the latter part of the year. This impact was adjusted out of our non-GAAP financials.
Regarding raw material costs, we saw low single-digit deflation sequentially in the fourth quarter and expect just modest deflation sequentially in the first quarter. As I mentioned in the last couple of quarters, following a period of significant inflation, these lower costs are largely being passed along in price reductions to our customers.
Shifting now to Solutions Group. Sales were up 19% ex. currency and 14% on an organic basis with high-value solutions up more than 20% and base solutions up mid single digits. Base Apparel Solutions were up sequentially and roughly comparable to prior year. Intelligent Label sales grew more than 30% in the quarter. Non-apparel categories, particularly Logistics and Food, grew significantly, up roughly 110% as new programs continued to roll out with apparel categories comparable to prior year. Adjusted EBITDA margin of 18.2% was up 180 basis points sequentially and up 230 basis points compared to prior year driven primarily by higher volume.
Now shifting to our long-term performance. Slide nine of our supplemental presentation materials provides an update on our progress against the long-term financial targets that we've communicated in 2021. And recall that this represents our fourth set of long-term goals after meeting or beating our previous three sets. The consistent execution of our key strategies enables us to continue delivering against our targets with an overriding focus on delivering GDP+ growth and top-quartile return on capital over the long term.
Through the first three years of the cycle, sales growth on a constant currency basis was 8% annually above our target in GDP driven by higher prices and volume. We expect strong volume growth in 2024 with some deflation-related price reductions as previously noted. Compared to 2020, adjusted EBITDA dollars have grown roughly 7.5% annually, excluding currency translation. Adjusted EBITDA margin was 15.1% in 2023 with the second half of the year at 16%.
Looking forward, our guidance for 2024 would indicate a roughly 9% EBITDA CAGR by the end of this year excluding currency translation. Adjusted EPS grew roughly 5.5% annually over the past three years, excluding currency translation, short of our target of 10% due primarily to the inventory destocking in 2023.
With strong earnings growth expected this year, we anticipate making progress against this target in 2024. Now, as always, our focus will continue to be the optimal balance of growth, margins and capital efficiency to drive incremental EVA over the long term.
Our return on total capital was 12% in 2023, including higher costs in the year for restructuring charges, legal fees and the impact of the Argentine peso devaluation. We expect ROTC will be back up in the mid to high teens in 2024. Given the diversity of our end markets, our strong competitive advantages and resilience as an organization to adjust course when needed, we're confident in our ability to make strong progress against these targets in 2024.
Now, shifting to our outlook for 2024. In the first quarter, we expect adjusted earnings per share to be roughly similar to the fourth quarter of 2023. With continued underlying sequential improvement, at least, partially offset by the seasonality of solutions in both apparel and logistics, and the return of some of the temporary cost measures we took in 2023, with incentive compensation as an example.
As 2024 progresses, we expect our earnings will improve sequentially driven by the normalization of label volume earlier in the year, the normalization of apparel volume mid-year, significant growth in Intelligent Labels as apparel rebounds and new programs roll out, and ongoing productivity actions.
For 2024 overall, we anticipate adjusted earnings per share to be in the range of $9 to $9.50 up 17% at the midpoint. We've outlined the full-year contributing factors on slide 18 of our supplemental presentation materials. To highlight key drivers of the midpoint, our guidance compared to prior year, we anticipate roughly 3.5% organic sales growth with high single-digit volume growth partially offset by deflation-related price reductions.
We estimate overall productivity, including restructuring savings, will offset higher employee costs including wage and benefit increases and higher incentive compensation following lower payouts for 2023. We expect to make selective strategic growth investments, particularly in high-value solutions, and we estimate net non-operational items, tax, interest, currency and share count to be roughly neutral.
In summary, we continue to improve our results as we advance our growth initiatives and our markets normalize. We expect a strong rebound in 2024 through a variety of environments, and we remain confident in our ability to continue to deliver exceptional value through our strategies for long-term profitable growth and disciplined capital allocation.
We'll now open up the call for your questions.