Bernard J. Birkett
Senior Vice President, Chief Financial Officer at West Pharmaceutical Services
Thank you, Eric, and good morning. I will take you through the drivers impacting sales and margin in the quarter as well as some balance sheet takeaways. And finally, we will review our first-quarter and full-year 2025 guidance. First up, Q4. Our financial results are summarized on Slide 10. We recorded net sales of $748.8 million in the quarter, representing organic sales growth of 3.3%.
Looking at Slide 11, proprietary products organic net sales increased by 4.5%. This was a function of generally improving demand and strong sales of delivery devices in the quarter. 4th-quarter revenues included a $25 million benefit from a delivery device incentive. High-value products, which made-up approximately 74% of 4Q proprietary product sales generated mid-single-digit growth led by customer demand for self-injection device platforms. Looking at the performance by market, biologics experienced high single-digit organic net sales growth, driven by increases in sales of self-injection device platforms. Pharma saw mid-single digit organic net sales growth, driven by an increase in sales of Weststar products and administrative systems.
Generics had a mid-single-digit organic net sales decline, driven by lower volumes of products. Our Contract Manufacturing segment declined by low-single digits. We recorded $273.6 million in gross profit and gross profit margin was 36.5%, down 150 basis-points year-over-year. However, adjusted operating profit increased to $162.8 million this quarter and adjusted operating profit margin of 21.7% was consistent with the same-period last year. Finally, adjusted diluted EPS declined 0.5% for Q4. The stock-based compensation tax benefit had no impact on EPS compared to the same-period last year.
Now let's review the drivers in both revenue and profit performance. On Slide 12, we show the contributions to sales growth in the quarter. Sales price increases contributed $39.3 million or 5.4 percentage points. Included in sales price is a $25 million customer incentive associated with achieving volume levels. The pricing benefit was partially offset by a negative mix impact of $15.3 million, driven by lower sales volume of HVP components and a higher proportion of lower-margin drug delivery devices. In addition, we faced a foreign currency headwind of approximately $7.2 million in the quarter.
Looking at margin performance on Slide 13. Proprietary products 4th-quarter gross profit margin of 40.8% was 190 basis-points lower than the margin achieved in the 4th-quarter of 2023. The key driver for the decline was product mix. Contract manufacturing 4th-quarter gross profit margin of 17% was 90 basis-points lower than the margin achieved in the 4th-quarter of 2023. On Slide 14, we have listed some key cash-flow metrics. Operating cash-flow was $653.4 million in 2024, a decline of $123.1 million, primarily due to a decline in operating results. In 2024, we spent $377 million on capital expenditures, a 4.1% increase over 2023. We continue to leverage our capex to increase our high-value product and contract manufacturing capacity.
Working capital of approximately $988 million decreased by $277 million from 2023, mainly due to a reduction in our cash balance. Our cash balance at December 31, 2024 of $484.6 million was $369.3 million lower than our December 2023 balance. The decrease in cash is primarily due to $560.9 million of share repurchases and our capital expenditures offset by cash from operations.
Turning to guidance, slide 15 provides a high-level summary. Full-year 2025 net sales guidance is expected to be in a range of $2.875 million and $2.905 billion. There is an estimated headwind of $75 million based on current foreign-exchange rates. We expect organic sales growth to be approximately 2% to 3%. This guidance assumes acceleration in HVP organic growth and that HVP components margins will expand, driven by Biologics, GLP1s and Annex 1.
We anticipate organic revenues in our proprietary products segment to increase as the impact of destocking continues to abate. Proprietary products gross margins are expected to be up slightly as compared to prior year, driven by improving HVP components performance. Contract manufacturing revenue is expected to be up low-single digits as compared to FY '24 as decreased revenue in continuous glucose monitoring business offsets expected growth in self-injection devices for obesity and diabetes. Contract manufacturing margins are expected to decline 200 basis-points year-over-year in FY '25 due to lower utilization. Just to note on the ramp-up of our two CM sites. In Dublin, the building is now up and running. Autoinjector production has commenced and will continue to ramp as we move through the third and fourth quarters.
Late in 2025 and into 2026, we expect both revenues and margins to benefit from the ramp-up in the pen and drug handling portion of the business. The Grand Rapids expansion is also operational and we had our first revenues in the 3rd-quarter of 2024. These revenues will increase as we achieve scale in mid-2025. Our experience with new installations is that they take-up to 18 months-to achieve close to full capacity.
Moving on to Slide 16, for 2025, our EPS guidance is now anticipated to be in a range of $6 to $6.20. Please note, we have several exciting incremental opportunities not incorporated in this guidance and we will update you on these in 2025 should they materialize. Slide 16 breaks down the progression from 2024 EPS of $6.75 to the 2025 guidance range. The guidance anticipates that proprietary products revenues, excluding the impact of our drug delivery device 2024 incentive, accelerate with improving margins adding $0.77 to 2025 EPS. This was more than offset by incentive compensation plus the tax benefit on stock-based compensation, which is not incorporated in our guidance and the currency headwind totaled to about $0.77.
The drug delivery device incentive headwind and glucose monitoring transition reduced 2025 EPS by about $0.43 and incremental investments in R&D and SG&A in 2025 are $0.22. In total, these factors get us to our '25 guidance range of $6 to $6.20. For capex, we are on a glide path back-down to our traditional 6% to 8% of revenues to support our long-range plan.
We now anticipate 2025 capex of $275 million, down $100 million from 2024. We expect that 2024 will be the peak investment year for our growth initiatives over the next several years. Thank you finally, today we are introducing first-quarter 2025 guidance and anticipated revenues in the range of $680 million to $690 million, which translates into 1% to 2% first-quarter organic revenue growth and first-quarter 2025 adjusted EPS is expected to be in the range of $1.20 to $1.25.
I'd now like to turn the call-back over to Eric. Thank you.