James C. Foster
Chairman, President & Chief Executive Officer at Charles River Laboratories International
Good morning. I will begin by providing highlights of our second quarter performance and revised guidance. We recorded revenue of $1.03 billion in the second quarter of 2024, a 3.2% decline on both the reported and organic basis over last year. The top line performance was in line with our outlook as organic revenue growth in the manufacturing segment was more than offset by DSA and RMS revenue declines.
By client segment, we continued to experience lower revenue from small and midsized biotech clients in the second quarter. While revenue from global biopharmaceutical clients increased modestly. I'll provide more details on the evolving trends within these two client segments shortly.
The operating margin was 21.3%, an increase of 90 basis points year-over-year. The increase was principally driven by lower performance based bonus compensation accruals in the quarter reflected in the reduction in our financial outlook for the second half of the year. On a segment basis, a higher operating margin in the manufacturing segment, and lower corporate costs were largely offset by lower margins in RMS and the DSA segment. These lower accruals were the largest contributor to the earnings outperformance in the second quarter.
Earnings per share of $2.80, increased 4.1% year-over-year and exceeded the implied outlook in our prior guidance, by approximately $0.40. We are significantly reducing our financial guidance for the year because forward-looking DSA trend data suggests that demand will not improve during the second half of the year as we had previously anticipated and, in fact, will decline for global biopharmaceutical clients. As a result we are reducing our revenue outlook to a 3% to 5% decline on an organic basis this year. A non-GAAP earnings per share is now expected to be in a range of $9.90 to $10.20. We intend to partially offset the headwinds through aggressive actions to streamline our cost structure, optimize our global footprint, and drive greater operating efficiency, which will enable us to limit the bottom line impact going forward. We believe taking these actions will also enable us to emerge from this period of softer demand as the stronger and leaner organization and better position to capture new business opportunities.
Before I discuss the second quarter business segment performance, I will provide more details on these end market demand trends, as well as the actions that we are taking to manage through the current environment. Our financial performance to date, including a low single digit organic revenue decline in the first half has been largely in line with our initial outlook. However, the lack of a recovery in demand for our biotechnology clients as well as recently emerging and softening demand trends in our global biopharmaceutical client base have caused us to take a much more negative view of our growth prospects for the second half of the year. Because of this the second half revenue growth that we previously anticipated will not materialize and, in fact, demand is expected to continue to soften for global biopharmaceutical clients in the near term. These trends for our broader biopharmaceutical client base are expected to lead to a low to mid single digit organic revenue decline in the second half of the year on a consolidated basis.
As you are aware, most global biopharmaceutical companies have announced major restructuring programs likely precipitated by the IRA or pending patent expirations, or both. And this has undoubtedly led to tighter budgets and additional pipeline reprioritization activities this year. Revenue for this client base continued to increase in the second quarter, however, proposal activity and bookings began to notably decline and diverge from biotech clients during the second quarter. We now expect demand for global biopharmaceutical clients to further deteriorate over the remainder of the year. We anticipate these trends are also likely to impact the DSA growth rate into 2025. So we are working now to reset our cost base to both withstand the pressures on our bottom line and to better position the company to win demand cycles back.
Large biopharmaceutical companies are currently focused on resetting their budgets to create leaner cost structures. We expect these actions and the resulting softening of our demand KPIs will continue to cause a period of slower spending by large pharm on their early stage drug development activities, particularly because they are more focused on their clinical pipelines at this time. We believe that these clients continue to view strategic outsourcing as a compelling solution to improve their cost efficiency and speed to market presenting a longer term opportunity for us once they inevitably refocus on their preclinical pipelines.
In contrast to large pharma, demand KPIs for small and midsize biotech clients have stabilized and trended somewhat more favorably through the first half, reflecting the solid funding environment and favorable sentiment around interest rates. Biotech companies are our largest client base at approximately 40% of total revenue and more than half of DSA revenue and DSA proposals and net bookings have improved to this client base this year. We experienced an improvement in biotech booking activity in the second quarter as the higher proposal levels that we commented on last quarter have begun to translate into new business wins. While we are cautiously optimistic that these trends will lead to a future demand recovery in our biotech client base. They're also not sufficient to support the DSA revenue improvement in the second half of the year that we previously anticipated, and therefore we do not expect revenue to Biotech clients to improve from first half levels.
We are laser focused on initiatives to generate more revenue, contain costs and protect shareholder value. As I discussed earlier this year, we have already begun to enhance our commercial efforts. We are focused on optimizing our sales force to accelerate revenue growth by adjusting go-to-market strategies and being a flexible partner for our clients focusing on selling across the entire portfolio and leveraging technology to enhance sales insights and identify selling opportunities earlier. Our digital strategy is also helping us to better connect with our clients including through our Apollo Cloud-Based Platform to provide real time access to scientific data and self-service tools for clients.
To drive additional savings and preserve the bottom line, we will continue to aggressively manage our cost structure to ensure that capacity and headcount are aligned with the current softer demand environment. We have already consolidated several smaller sites and reduced staffing levels. These recent actions and additional actions that will be implemented by the end of the third quarter are expected to generate over $150 million of annualized cost savings which will be fully realized in 2025.
We are also finalizing a multi year strategy focusing on further optimizing our global footprint driving greater operating efficiency and leveraging our digital platform and global business services to further streamline processes. We expect to implement the initial phases of this plan before the end of this year and will provide a more comprehensive update in November, including the incremental savings that these initiatives will deliver.
As referenced in this morning's earnings release, we will also reinstate a stock repurchase program and our board recently approved a new stock repurchase authorization totaling $1 billion. We intend to reinstate stock repurchase activity before the end of the third quarter. Flavia will provide more details on this topic, as well as an update on our capital priorities.
I'd now like to provide you with additional details on our second quarter segment performance beginning with the DSA segment's results. DSA revenue in the second quarter was $627.4 million, a decrease of 5% on an organic basis, driven by lower revenue in both the discovery services and safety assessment businesses.
In the safety assessment business, lower steady volume was partially offset by a small benefit from price increases. The overall business trends were relatively consistent with those that we have discussed in recent quarters with the exception of diverging demand trends between our global biopharmaceutical client base and small and mid tier biotechs. As mentioned earlier, we are beginning to see improvements in proposals and booking activity for biotech clients, but as meaningfully slowing for global biopharma clients. The combined effect has resulted in a net book-to-bill ratio that was similar to the last five quarters, but below one times in the second quarter. Gross bookings also remained above one times in the second quarter, and the cancellation rate was consistent with first quarter levels, which was below its peak but still not back to targeted levels. As a result of these trends, the DSA backlog decreased on a sequential basis to $2.16 billion at the end of the second quarter from $2.35 billion at the end of the first quarter.
Since we did not expect these trends to improve during the second half of the year as previously anticipated and because we will likely be impacted by incremental spending pressures from our global biopharmaceutical client base, we have reduced our DSA revenue outlook to a high single digit organic decline for the full year. In the near term, we will ensure that our capacity both space and staffing are aligned with its lower expected level of demand. Looking beyond that, we will continue to speak with our clients and closely monitor for indications that clients are beginning to return their focus to their IND-enabling programs versus their recent focus on post IND studies and for demand trends to stabilize or begin to improve across both the global and mid tier client bases.
The DSA operating margin was 27.1% in the second quarter, a50 basis point decrease from the second quarter of 2023. The year-over-year decline reflected the impact of lower sales volume and moderated pricing, particularly in the discovery services business. The operating margin improved from the first quarter level, which was commensurate with sales volume, lower bonus accruals, and additional cost savings generated by our restructuring efforts.
RMS revenue was $206.4 million, a decrease of 3.9% on an organic basis over the second quarter of 2023. The RMS revenue decline was primarily driven by lower NHP revenue. As we mentioned last quarter we expected the timing of NHP shipments to be a meaningful headwind to the second quarter RMS growth rate. Excluding the NHP impact, RMS revenue was essentially flat year-over-year as higher sales of small research models were offset by slightly lower revenue for research models services. For the full year we believe the market environment will remain stable overall, so we are reaffirming our RMS organic revenue growth outlook flat to low single digit growth.
Revenue for small models continue to increase in all geographies, particularly in China and Europe. The resilience of the research models business reflects the fact that small models are essential low cost tools for research, which also enhances our ability to continue to realize price increases globally. Our China business has been resilient despite the macroeconomic pressures in the country, as a growth rate for small research models has strengthened, driven primarily by share gains associated with our geographic expansions within China.
Research model services experienced a slight revenue decline in the second quarter in both GEMS and Insourcing Solutions. These trends largely reflect the overall biopharma demand environment. However, the benefits generated by clients that utilize our GEMS and IS solutions can help them overcome their budgetary pressures by driving efficiency.
CRADL business model, while not unaffected by the demand environment, continues to resonate with clients who are looking for cost-effective solutions for their vivarium space requirements. There are pockets of softer demand, particularly in South San Francisco that have led to the consolidation of our CRADL capacity there. However, other biohubs continue to perform well.
In the second quarter, the RMS operating margin decreased by 330 basis points to 23.1%. The decline was primarily a result of the lower NHP revenue. The timing of NHP shipments from both Noveprim and in China can lead to quarterly revenue fluctuations. And since the sales of these large models are quite profitable, the timing of shipments can have a meaningful impact on the RMS margins on a quarterly basis. However, our view for the year hasn't changed and both the RMS and manufacturing segments are expected to deliver operating margin expansion in 2024.
Revenue for the Manufacturing Solutions segment was $192.3 million, an increase of 3.7% on an organic basis compared to the second quarter of last year. Each of the segment's businesses contributed to the revenue growth. As anticipated, the manufacturing growth rate was lower than the first quarter level because of a more challenging prior year comparison for the CDMO business. You may recall that we anniversaried the recovery of the CDMO business in the second quarter of last year. We expect the CDMO growth rate to reaccelerate in the second half of the year based on the current pipeline of new projects, particularly for cell therapy.
As a result, we expect manufacturing organic revenue growth will be in the mid- to high single-digit range, a slight increase from our prior outlook. The competitive landscape is also undergoing a transition in certain manufacturing market sectors due to M&A or proposed geopolitical regulation, both of which should offer new opportunities to demonstrate the synergies of our comprehensive testing portfolio and win new business.
The CDMO business continues to perform well and client interest remains strong. The third client who utilizes our viral vector center of excellence in Maryland received commercial approval last month, and we are also regularly adding new projects across the various phases of clinical development.
Booking activity continues to improve, and the CDMO business remains on track to deliver solid double-digit growth this year.
Revenue in our manufacturing quality control testing business, Biologics Testing and Microbial Solutions also continued to grow, rebounding from the more challenging market environment last year. Biologics Testing's performance was driven by its core testing activities, including cell banking and viral clearance. For Microbial Solutions, the primary driver of revenue growth was demand for our Endosafe testing cartridges. Clients have resumed their purchases of reagents and consumables as destocking activity have subsided.
The manufacturing segment second quarter operating margin was 26.6%, demonstrated continued improvement with increases of 370 basis points year-over-year to 130 basis points sequentially. The improvement is largely a result of leverage from higher sales volume across each of the segment's businesses. We expect this trend will continue as the segment rebounds from 2023 and also due to the ongoing increase in the scale of our CDMO business.
To conclude, it is clear that our clients are in the midst of reassessing their budgets, reprioritizing their pipelines and managing their cost structures. However, our clients will continue to seek life-saving treatments for rare diseases and other unmet medical needs. In order to do so, they will, by necessity, reinvigorate investment in their early-stage R&D programs over time.
To emerge as an even stronger partner for our clients, we are working to actively manage our costs, initiate new and innovative ways to transform our business, protect shareholder value and enhance our clients commercial experience to gain additional share.
To conclude, I'd like to thank our employees for their exceptional work and commitment and our clients and shareholders for their continued support.
Now Flavia will provide additional details on our second quarter financial performance and 2024 guidance.