ICON Public Company - Q4 2023
February 22, 2024
Transcript
Operator (participant)
Good day, and thank you for standing by. Welcome to the ICON Q4 and full year 2023 earnings conference call. At this time, all participants are in listen-only mode. After the speaker's presentation, there will be a question-and-answer session. To ask a question during the session, you'll need to press star one and one on your telephone.
You'll then hear an automated message advising your hand is raised. To withdraw your question, please press star one and one again. Please be advised that today's conference is being recorded. I'd now like to hand the conference over to your first speaker today, Kate Haven. Please go ahead.
Kate Haven (VP of Investor Relations)
Good day, and thank you for joining us on this call covering the quarter and full year ended December 31, 2023. Also on the call today, we have our CEO, Dr. Steve Cutler, and our CFO, Mr. Brendan Brennan. I would like to note that this call is webcasted and that there are slides available to download on our website to accompany today's call.
Certain statements in today's call will be forward-looking statements. These statements are based on management's current expectations and information currently available, including current economic and industry conditions. Actual results may differ materially from those stated or implied by forward-looking statements due to risks and uncertainties associated with the company's business, and listeners are cautioned that forward-looking statements are not guarantees of future performance.
Forward-looking statements are only as of the date they are made, and we do not undertake any obligation to update publicly any forward-looking statement, either as a result of new information, future events, or otherwise. More information about the risks and uncertainties relating to these forward-looking statements may be found in SEC reports filed by the company, including the Form 20-F, filed on February 24, 2023.
This presentation includes selected non-GAAP financial measures, which Steve and Brendan will be referencing in their prepared remarks. For a presentation of the most directly comparable GAAP financial measures, please refer to the press release section titled Condensed Consolidated Statements of Operations. While non-GAAP financial measures are not superior to or a substitute for the comparable GAAP measures, we believe certain non-GAAP information is more useful to investors for historical comparison purposes.
Included in the press release and the earnings slides, you will note a reconciliation of non-GAAP measures. Adjusted EBITDA, adjusted net income, and adjusted diluted earnings per share excludes stock compensation expense, restructuring costs, foreign currency gains and losses, amortization, and transaction-related and integration-related costs and their respective tax benefits. We will be limiting the call today to one hour and would therefore ask participants to keep their questions to one each, with an opportunity for a brief follow-up. I would now like to hand the call over to our CEO, Dr. Steve Cutler.
Steve Cutler (CEO)
Thank you, Kate, and good day, everyone. ICON delivered strong results in quarter four and for the full year 2023, as our team successfully navigated a dynamic environment impacted by several macroeconomic and geopolitical challenges.
Through consistent operational delivery, increased scale, and our comprehensive suite of solutions, we were successful in securing new partnerships and expanding existing relationships across our customer segments and with the world's top 20 pharma companies in particular. Overall, we continue to experience positive demand trends in our industry. In the fourth quarter, we did see some volatility in RFP activity across customer segments, as small biotech was somewhat muted toward the end of the year, with some companies continuing to be deliberate with their overall development spend decisions.
With that said, we are encouraged by the improving sentiment among customers in quarter one, as well as underlying trends from a funding perspective that suggests a stabilizing market as we've entered 2024. Within the large pharma segment, we continue to see a strong level of opportunities anchored by the strength of our new and existing strategic partnerships.
In totality, across all segments, our overall trailing 12-month RFP activity increased in the high single digits in quarter four, consistent with quarter three, and this appears to be continuing or even accelerating early in 2024. Given this backdrop, and in line with our previous comments, we expect book-to-bill to be in the range of 1.2-1.3 times on a quarterly basis in 2024, with an overall target of 1.25 times for the full year 2024.
In quarter four, net bookings increased 8% on a year-over-year basis, driving 10% growth in total backlog over quarter four, 2022. We saw continued strength in demand across our large pharma segment for both full service and FSP solutions, as well as excellent performance from our laboratory services business. Our innovative and scaled offerings are resonating well with customers and strongly positions ICON for further traction in new and existing customer accounts.
To this end, in quarter four, we were awarded a new full-service strategic partnership with a top 20 pharma customer, creating significant new business potential in phase 1-4 studies across a number of therapeutic areas in their portfolio. Our depth of experience in long-standing and transformational large pharma partnerships was one of the key criteria for selecting ICON, as well as our collaborative approach in achieving meaningful efficiencies in their development programs.
In reflecting back on the numerous accomplishments across our organization in 2023, there are several in particular that highlight our commitment to operational excellence.... Our efforts in driving forward our ambitious automation agenda resulted in the achievement of greater than 2 million hours of automated activity in 2023 across a number of functions and processes.
We have set another goal for automation in 2024, driving to deliver significant further improvement in areas such as critical study startup activities, further automation of our back-office activities, as well as processes such as data ingestion and review, with a target of 3.5 million hours for the full year. At the time of the acquisition of PRA Health Sciences in July 2021, we set ambitious targets for both synergy realization andtotal debt paydown.
The following two-year period was characterized by unexpected macroeconomic pressures and challenges in our market. Despite this dynamic, we remained consistent in our planned actions and were able to accelerate both the full cost synergy realization, as well as our target leverage ratio ahead of our initial timelines as we closed out 2023.
This was all possible, of course, through the efforts of our over 41,000 employees across the world, who have worked tirelessly to progress our customers' projects, many of whom have been recognized with prestigious industry awards for their efforts. Turning to review our financial performance in the quarter, ICON delivered a strong set of financial results, with revenue growth of 5.3% over quarter four 2022.
Direct fee revenue growth continues to be robust and within the high single digits on a year-over-year basis, while pass-through revenue was slightly below our expectations due to the wind down of COVID-related trials in this quarter. With strong direct fee revenue growth and lower than expected pass-through revenue, we saw a notable uptick in gross margin on a sequential and year-over-year basis, resulting in a 30.4% margin for Quarter Four.
On this note, we do anticipate returning to a more normalized gross margin profile of approximately 30% for the full year 2024. On another positive note, ICON again delivered substantial growth on Adjusted EBITDA in Quarter Four, as SG&A expense was essentially flat on a sequential basis, resulting in a margin of 21.7%, well ahead of the midterm target we set back in early 2022.
Given the revenue mix shift in Quarter Four, our full year 2023 Adjusted EBITDA margin of 20.9% was stronger than anticipated, an impressive 180 bps growth in Adjusted EBITDA margin in 2023 on a year-over-year basis. We expect an Adjusted EBITDA margin expansion of circa 50 bps on a full year basis in 2024.
We continued to successfully execute our capital deployment strategy in the fourth quarter, closing the previously announced acquisition of Phillips Pharma Solutions in October. While this transaction is a small contributor to ICON's overall revenue, it supplements our current medical imaging capability and adds cardiac safety solutions to our service offering, providing our customers with a more integrated service.
In addition, earlier this year, we closed the acquisition of HumanFirst, a cloud-based technology company focused on accelerating and improving digital health technology selection in clinical trials. The addition of HumanFirst will position us to become the industry leader in integrated clinical outcome assessment solutions, allowing customers to make evidence-based decisions to reduce patient burden and enhance data quality.
Separately, we have a number of capital projects that are in development to bring additional efficiency to clinical trial pain points and ultimately deliver more value to our customers. We are well underway in developing a comprehensive planning and oversight capability for site selection and activation that is coupled with improved resource forecasting, designed to deliver enhanced patient recruitment timelines. In addition, we continue to progress our investments in AI and automation.
One example is the development of our Firecrest site and investigator database, designed to provide in-depth insights to address industry challenges such as investigator and site activity and their overall performance. We were very pleased with the upgraded credit rating we received from Moody's in December, ICON's second upgrade to investment-grade rating in the fourth quarter, following the S&P Global Ratings upgrade in October.
This important milestone allows us the ability to refinance our variable rate debt and move forward toward a more favorable capital structure that will give us more flexibility from a capital deployment perspective, particularly in the second half of 2024. We have a definitive plan that has been approved by our board and will be executed in the first half of this year, allowing us to achieve the targeted total interest expense reduction of approximately $100 million on a year-over-year basis from 2023.
In line with our strategy, M&A remains the priority as the optimal way to deliver shareholder value, and we fully intend to utilize the strength of our balance sheet to acquire companies that complement our current services and add to our ability to deliver faster and more efficiently for customers.... However, we have also secured approval to opportunistically spend up to $500 million on share repurchases over the next 12 months.
Given the positive trajectory from our performance in quarter four and current market conditions in the start of this year, we are reaffirming the full year 2024 financial guidance we issued in January. We expect revenue to be in the range of $8.4 to 8.8 billion, an increase of 3.4% to 8.4% over full year 2023. Additionally, we expect adjusted earnings per share to be in the range of $14.50 to $15.30, representing an increase of 13.4% to 19.6% over the full year 2023. I'll now turn it over to Brendan for further details on the financial results. Brendan?
Brendan Brennan (CFO)
Thanks, Steve. In quarter four, ICON achieved gross business wins of $2.99 billion and recorded $461 million worth of cancellations. This resulted in a solid level of net awards in the quarter of $2.53 billion and a net book to bill of 1.22x. Full year 2023, gross business wins were $11.77 billion, and cancellations were $1.82 billion, resulting in the net business wins of $9.95 billion and also a net book to bill of 1.22x.
With the addition of the new awards in quarter four, our backlog grew to a record $22.8 billion, representing an increase of 2.4% on quarter three of 2023, or an increase of 10% year-over-year. Our backlog burn was 9.3% in the quarter, slightly down from quarter three levels. Revenue in quarter four was $2.066 billion.
This represented a year-on-year increase of 5.3% or 4.1% on a constant currency basis. Full year revenue was $8.12 billion. This represented a year-on-year increase of 4.9% or 4.6% on a constant currency basis. Overall, customer concentration in our top 25 customers increased from quarter three 2023.
Our top customer represented 9.5% of total revenue in quarter four. Our top 5 customers represented 27.5%, our top 10 represented 43.8%, while our top 25 represented 66.8%. In the full year 2023, our top customer represented 8.9% of revenue, our top 5 customers represented 26.8% of revenue, our top 10 represented 41.4%, while our top 25 represented 62.9%.
Gross margin for the quarter was 30.4%, compared to 29.8% in quarter three 2023. Gross margin increased 50bps over gross margin of 29.9% in quarter four 2022. Full year 2023 gross margin was 29.9%, and we anticipate this to be a similar level for the full year 2024.
Total SG&A expense was $180.2 million in quarter four, or 8.7% of revenue. So this is essentially flat on prior quarter. In the comparable period last year, total SG&A expense was $182.2 million, or 9.3% of revenue. Full year SG&A expense was $732.7 million, or 9% of revenue, representing improvement of 80bps over full year 2022, and a reduction in spend of $24.7 million. Adjusted EBITDA was $448.2 million for the quarter, or 21.7% of revenue. In the comparable period last year, adjusted EBITDA was $405 million, or 20.6% of revenue, representing a year-on-year increase of 10.7%.
Sequentially, Adjusted EBITDA margin improved 70bps over quarter three margin of 21%. Full year 2023, Adjusted EBITDA was $1,694.1 million, or 20.9%, representing very strong growth of 14.5% on a year-over-year basis. Adjusted operating income for quarter four was $414.4 million, a margin of 20.1%. This is an increase of 9.7% over adjusted operating income of $377.7 million, a margin of 19.3% in quarter four of 2022. Full year 2023, adjusted operating income was $1,568 million, a margin of 19.3%. This was an improvement of 14.2% on full year 2022.
Net interest expense was $75.4 million for quarter four. Full year net interest expense totaled $315.3 million in 2023, compared to $209.6 million in the full year of 2022. The effective tax rate was 15.2% for the quarter. The full year 2023 effective tax rate was 15.5%, down from our full year 2022 effective tax rate of 16.5%. Adjusted net income attributable to the group for the quarter was $287.5 million, a margin of 13.9%, equated to adjusted earnings per share of $3.46, an increase of 10.55% year over year.
Full year adjusted net income attributable to the group was $1.058 billion, equating to an adjusted earnings per share of $12.79, an increase of 9% year-over-year. In the fourth quarter, the company recorded $9.7 million of transaction and integration-related costs. Full year transaction and integration-related costs were $44.2 million, and full year restructuring costs were $45.4 million. U.S. GAAP income from operations amounted to $265.6 million or 12.9% of revenue during quarter four. Full year U.S. GAAP income from operations amounted to $956.2 million, or 11.8%.
US GAAP net income in quarter four was $216.4 million, or $2.60 per diluted share, compared to $1.42 per share for the equivalent prior year period. Full-year US GAAP net income was $612.3 million, or $7.40 per diluted share, compared to $505.3 million, or $6.13 per diluted share for the full year 2022. Net accounts receivable was $1.088 billion at December 31, 2023. This compares with a net accounts receivable balance of $1.129 billion at the end of quarter three, 2023. DSO was 47 days at December 31, 2023, a decrease of 2 days from September 30, 2023.
Cash from operating activities in the quarter was $440.1 million. Free cash flow was excellent in quarter four, increasing 24% sequentially and achieving our target of circa $1 billion for the full year. We were very pleased with the diligent efforts from our team in driving a 7-day improvement in DSO over the course of the year.
This now brings us back in line with our anticipated range, based on our current mix of customers and their payment terms. We will continue to stay focused on billing levels and cash collections as we progress through this year. At December 31, 2023, cash and cash equivalents totaled $380.1 million, and debt totaled $3.78 billion, leaving a net debt position of $3.4 billion.
This compared to a net debt of $3.73 billion at September 30th, 2023, and net debt of $4.36 billion at December 31st, 2022. Capital expenditure during the quarter was $52.7 million. From a capital deployment perspective, we made a payment of $250 million in our Term Loan B facility in quarter four and ended the quarter with a leverage ratio of 2x net debt, which is EBITDA. We made payment on our Term Loan B facility of $950 million in full year 2023. As Steve mentioned, we are pleased to receive the upgrades in our credit ratings from both S&P Global Ratings and Moody's in the fourth quarter.
With a return to an investment-grade rating, we now have the ability to more favorably refinance our debt and, in turn, free up more capital to deploy opportunistically for M&A, as well as potential share repurchase. Our preferred use of capital remains M&A, and we have a healthy pipeline of opportunities we are currently engaged on that are focused on adding scale and capability to strategic areas of our portfolio.
Finally, our key assumptions behind the full-year guidance remain in place: an effective tax rate of 60.5%, free cash flow target of circa $1.1 billion, CapEx spend in the range of $150 million-$200 million, and interest expense of circa $200 million-$230 million, all for the full year 2024. Before we move to Q&A, we want to commend the dedicated employees of ICON for their efforts in delivering another year of solid performance and continuing to support our mission in bringing new therapies to patients around the world. Operator, we are now ready for questions.
Operator (participant)
Thank you. If you would like to ask a question, you'll need to press star one and one on your telephone and wait for your name to be announced. And to withdraw your question, please press star one and one again. Thank you. We'll now take our first question. Please stand by. First question is from the line of Justin Bowers from Deutsche Bank. Please go ahead.
Justin Bowers (Equity Research Analyst)
Hi, good morning, everyone. Could you just remind us what the net service fee revenue, revenue growth was in the quarter? And then more broadly, is there a rule of thumb or heuristic that we can use to help better understand the sort of like what the top-line headwind is from, you know, a shift to FSP? That's the first question.
Steve Cutler (CEO)
I think that's 2, actually, Justin, but on a direct fee basis, we're at about 8%-around about 8%. I think we did high single digits. That's the number on a direct fee basis, so we feel good about that. We had slightly lower pass-throughs during the quarter, so that pushes back overall to the 5. In terms of top line impact of FSP, that's hard to... It's really hard to quantify that at this stage.
This is a very gradual approach. FSP is still a relatively modest part of our business, although an important part of our business, and it contributes, you know, at the bottom, the contribution level line, it's not too different ultimately to our full service work.
So while it may have some modest impact on overall margins, as it increases, and we'll talk a bit about that as we go through the call and the trends on FSP, it's not as... I think we talked about 200-300 bps, as a number in terms of impact on a headwind basis over the longer term. But that's, you know, it really depends upon the customer and upon the particular contract, you know?
Brendan Brennan (CFO)
Yeah, and of course, you know, as we think about it, you know, we've talked about the fact that we saw that mix there last year. You know, I think we've started off this year with very strong indications that our full service organization is going to grow well in terms of business wins this year. So, and certainly, Justin, of course, it's included in our guidance as given, and certainly the midpoints there would include the mix shift, if you like, to the extent we see that during the course of the current year.
Justin Bowers (Equity Research Analyst)
... Appreciate it. That's my one or two, so I'll, I'll jump back in queue.
Operator (participant)
Thank you. We'll now take our next question. And this is from the line of Jailendra Singh from Truist Securities. Please go ahead.
Jailendra Singh (Managing Director of Healthcare Technology & Distribution)
Thank you, and good morning, everyone. So I wanted to follow up on your macro commentary. It seems you are encouraged by data points and trends you've seen in Q1 thus far, but you're maintaining your outlook, which assume slower CRO industry growth. So is it fair to say that you're not reflecting recent trends in your outlook? And if these trends continue, would you say that will be kind of upside to expectations for the year?
Steve Cutler (CEO)
Yeah, I'd characterize it this way, Jalendra, in that, you know, I think as we said early in January, on the RFP front, biotech was a little more muted, large pharma was strong. As we've gone into the first half of the first quarter of this year, we've probably seen the RFPs tick up, and the environment sort of move up a notch. So, you know, overall, in terms of, you know, RFPs in the first quarter—again, the first half of the first quarter, so we're not ready to declare victory, and I'm not reporting the first quarter today. But we're seeing sort of mid-teens growth on the RFP opportunity. A lot of that through strength in large pharma.
Some of the strategic partnerships we've talked about are bearing fruit in terms of opportunities. But we're also seeing a modest uptick around mid-single digits in the biotech space as well. So we talked about biotech stabilizing and improving, and that seems to be playing out in the first, as I say, the first very early part of this year. So we're encouraged by that. We're not quite ready to, you know, to change guidance or to get too bullish on that at this point. But we're certainly very encouraged about the positive environment that we see in the first part of quarter one.
Jailendra Singh (Managing Director of Healthcare Technology & Distribution)
Okay. Then my quick follow-up on the gross margin. Looks like, of course, you expect that to be flat at 30% year-over-year. Just want to understand the puts and takes there. Are you seeing any pricing pressure from your clients, which might be impacting trends? Clearly, shift to more FSP work is a headwind, but it's very gradual. Any offsetting factors you can highlight? Just give us more granular details about the gross margin trends this year.
Brendan Brennan (CFO)
Yeah, I'll take that one. In terms of the margin progress and profile, obviously, we were very happy with how we ended up the year. And yeah, we think that the circa 30 is probably the right way to think about 2024. There are, of course, mix shifts in the absolute levels of business. To your point, they're quite gradual in terms of really having a significant margin profile impact.
But you know, we do a lot of work, as we've talked about in the past, in terms of making sure we're an efficient organization. And that runs from making sure that all of our projects are highly utilized by our staff, right down to the concepts of how we use our technology to continue automation and the use of robotics in our organization.
And of course, that impacts not only on our gross margin, but on our SG&A as well. And so we look to continue that investment, and, and Steve made reference to that in his prepared comments, as we go through the course of, 2023, I suppose, or 2024, I should say. All of that gives us confidence that, you know, even with shifting dynamics in our, in our mix of business, between Full Service and FSP, we should be in a good place to be able to maintain that 30% gross margin.
And as we've talked about, that is our kind of, you know, more of our medium-term target, as well. We feel good about that, and I think it's that diligence from a project management perspective and that use of technology that really gives us the comfort on that particular point.
Jailendra Singh (Managing Director of Healthcare Technology & Distribution)
Great. Thanks, guys.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Luke Sergott from Barclays. Please go ahead.
Luke Sergott (Director of Healthcare Equity Research)
Great. Thanks, guys. Just to follow up on that pricing, we hear about, you know, the competitive dynamics in the market. You know, you always talk about the pharma industry always sharpening their pencils. But as you guys have shifted more towards large pharma, given the lack of biotech funding and RFPs out there, the large CROs are competing on fewer projects. So are you guys seeing fewer projects across large pharma? And then how is that pricing environment among these projects, and is anybody kind of getting a little aggressive on the pricing dynamic?
Steve Cutler (CEO)
Yeah. Thanks, Luke. We're certainly seeing more opportunities in large pharma.
Luke Sergott (Director of Healthcare Equity Research)
Mm-hmm.
Steve Cutler (CEO)
No question about that. The RFP dollars that are coming through are, you know, very solid and then driving that, as I say, that early 2024, you know, mid-teens increase in RFP on a trailing twelve-month basis. And we are seeing more opportunities as well. I think that's partly because of the number of strategic partnerships we have across the industry.
I think it's partly because of the number of—because of the fact that we are now, we're a significantly scaled organization. We're a major player in the development space now, and we're part of the conversation every time now. Even if we're not specifically a strategic partner with a large pharma, we get that opportunity. And so we're seeing more, we're seeing more dollars. Is the pri...
It's always a very competitive pricing environment. We have to sharpen our pencils, we have to be smart in the way we structure project teams and put projects together, and we do that pretty well. So, you know, I'd say the pricing environment, you know, hasn't changed dramatically. I would say that in our, you know, with our opportunities, because we are strategic with a number of these customers, our win rate tends to be higher in that part of the market as well.
So we win a greater proportion of those dollars than we do in other parts of the market, where we're competing with a number of different organizations, and there are different perspectives on large versus small CROs, et cetera, et cetera. So, you know, we've certainly like that large pharma space. There's of course always some challenges on pricing, but we believe we're well positioned to be able to accommodate those.
Luke Sergott (Director of Healthcare Equity Research)
... Great. And then I guess the follow-up there is kind of on the same vein there. You guys put out the 1.25 book-to-bill guide. I don't remember you guys putting usually a hard target like that. So what's giving you the visibility? Is it something from the customer class? Like, you know, like you said, like you could have a visibility into biotech funding coming back or large pharma or some therapeutic index. Just give us some type of idea of where you're getting that visibility.
Steve Cutler (CEO)
Well, I'd say, first of all, it's a target rather than a guide. You know, that is a -
Luke Sergott (Director of Healthcare Equity Research)
Sorry, sorry, I didn't mean to put the words in your mouth.
Steve Cutler (CEO)
Let's be clear. That's what we're shooting for. That's what we believe-
Luke Sergott (Director of Healthcare Equity Research)
Yeah
Steve Cutler (CEO)
... the market will support. You know, so we're basing that on, you know, the opportunities we're seeing coming in the door, on the build that we have on a more strategic level with some of these mid-sized and large pharma customers. We're basing it on the stabilization and the improvement as we see in the biotech funding space and our opportunity to win business there. There's a number of things there. You know, we feel we're in a good place to be able to benefit from those opportunities.
We feel the company's, you know, moved along nicely. We've made a lot of progress with the integration and union with PRA. That's much of that is behind us now. We feel very constructive about the, you know, the long medium and longer term future of the organization and the industry for that matter.
Luke Sergott (Director of Healthcare Equity Research)
Great, thanks.
Kate Haven (VP of Investor Relations)
Sorry, I'll just maybe just tack on quickly in terms of the 1.25. That's really the average target, you know, that we're thinking about for the full year. So that's not on, you know, every quarter is not go, you know, isn't necessarily to say it's 1.25 on the mark, but it's still that the range between 1.2 to 1.3 for the full year, which of course averages 1.25.
Luke Sergott (Director of Healthcare Equity Research)
Okay, great. Thanks.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Eric Coldwell from Baird. Please go ahead.
Eric Coldwell (Senior Research Analyst)
Thank you. Good morning. I wanted to hit on, staffing and resourcing. I'm curious, with the mid-single-digit revenue growth this year, what kind of hiring needs you might have? How does that look on a, gross and net basis, i.e., is turnover improving? Can you get more with less, if you will? And then, I know you've done, a couple of smaller deals here recently. What, you know, where do you think you end up the full year, including the M&A, in terms of headcount? Thanks very much.
Steve Cutler (CEO)
Sure, Eric. So, so on overall, headcount-wise, we didn't really increase this year. We were able to get the growth through improvement in efficiency of, as I say, the 41,000 very dedicated employees that we have in the organization. Part of it was, it was I talked about the hours on the automation, 2 million hours went in there. That certainly helped us.
Eric Coldwell (Senior Research Analyst)
Right.
Steve Cutler (CEO)
We're planning more of that. So resourcing was solid. Retention's been very good.
Eric Coldwell (Senior Research Analyst)
Mm-hmm.
Steve Cutler (CEO)
In fact, we've seen retention improve month-to-month, quarter-to-quarter, really for the last couple of years now. So we're well above our retention levels pre-COVID now, and we feel so the pressure in terms of resourcing is lower than it was. That's helping us from an SG&A point of view. We feel the you know, the workforce is engaged and enabled and you know, really making it very positive. So we're you know, I would say we're a more efficient organization than we were certainly two years ago, and we continue on that push.
As I said, the target was to move automation to, you know, closer to the 3.5 million hours, which represents a significant number of people, if you, if you convert that to hours. But that's the way we see our, sort of our, our workforce growing, mainly through automation and process improvement than through actually adding headcount. Having said that, you know, with the growth projection we have for this year, we will be, you know, inevitably adding people, but probably at a lower rate, in fact, certainly at a lower rate than we add revenue.
So if you can work it in those sort of terms, we think we can continue with the efficiencies and with the improvement in the efficiencies, be it utilization, automation, all the rest of it. As we get back and step back in the M&A market, clearly we'll be bringing on people as we acquire organizations and acquire companies, and we'll, you know, we'll work that through, and we'll work them into the organization. But they'll be... Again, I think we can say that we'll be increasing revenue at a greater rate than we'll be increasing headcount or the cost of headcount as we go forward.
Eric Coldwell (Senior Research Analyst)
That's great. If I could just throw in one follow-up here or different question. The 1.2-1.3 book-to-bill range is consistent with what you've said in the past. I'm curious, with this new publicly known contract with BARDA or opportunity with BARDA, do you have expectations in your annual book-to-bill related to that?
I assume they're fairly modest, if so, but I'm just curious how much of that is, you know, I hate to use the term legacy or core, because I think these are all core contracts, but non-BARDA work, how much of the net book-to-bill goal is, you know, more traditional work versus this unique government opportunity? And I'll wrap it up there. Thanks.
Steve Cutler (CEO)
You know, we see these, I mean, we see the occasional BARDA contract coming along, Eric, but there's nothing in Q4. And although there may be some opportunities in the pipeline, we don't think they're gonna materially have a major impact on our book-to-bill across the year. They may have some impact if they come in on a quarterly basis, but across the year, you know, in terms of the aspiration, the target we have for new business awards, it'll be very modest or minor.
So while they're important, you know, for our business, and obviously they tend to be vaccine-related studies, and they give us an opportunity to earn revenue faster than some of the other projects we do. And so from that point of view, particularly, they have some benefit for our organization. We don't think they're gonna be particularly material on an annual basis and not necessarily gonna materially drive that book-to-bill number.
Eric Coldwell (Senior Research Analyst)
Thanks very much.
Steve Cutler (CEO)
Thanks, Eric.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Patrick Donnelly from Citi. Please go ahead.
Patrick Donnelly (Managing Director)
Hey, guys. Thanks for taking the questions. Steve, I wanted to pick up on the burn rate that you just mentioned there in terms of just what's in the pipeline. Obviously, I know it varies between things like oncology. Obviously, you mentioned Sparta there. Can you just talk about how you're thinking about that burn conversion rate this year and where that trend line is going? And you know, maybe Brendan, I'm sure you can chime in as well, but just curious on how you're thinking about that piece.
Steve Cutler (CEO)
Yeah, Pat, I'll give you a bit of an opinion on that, then Brendan can give you some more detail. I mean, we're at about 9.3 this quarter.
Patrick Donnelly (Managing Director)
Sure.
Steve Cutler (CEO)
It's down a little, down what? 20bps from last quarter. It's probably not going up any time soon, I would say, given the portfolio mix that we have as we've moved away from those vaccine trials at COVID. So we're probably gonna, we're possibly gonna trend down, you know, 10bps or so, that, you know, we're obviously working ways to avoid that and to speed up the current trials we've done, and we've had some success in doing that. But, the trend is probably marginally flat or down, I'd say, in the sort of short to medium term. You wanna add?
Brendan Brennan (CFO)
Yeah, no, I think that's exactly it. I don't know if there's much to add. It's probably as we go through 2024, we probably think a bit more in that 92 to 93 range, and that's probably where we'll be. And to Steve's point, of course, there's opportunities that, you know, if we can get more of that vaccine work in the door, that might have a you know a little bit of a help us with a little bit of a tailwind in the back half of the year. But at this stage, we're very much looking at the ranges as outlined.
Patrick Donnelly (Managing Director)
Okay. No, that's helpful. And then maybe just following up on one of the earlier questions, Steve, I know you said, you know, the RFPs, I think it was mid-teens, you know, so far this quarter. I mean, it's clearly sounds, you know, a little more constructive than you sounded at, at JPM in January.
You know, can you just talk about, I guess, what you saw over the last month, month and a half to kind of, you know, I guess, would come out with a little more constructive tone there? And, and again, it sounds like that, that would shape up well in terms of just how to think about the book to bill for 1Q, I guess, being squarely in that 1.2-1.3 range. Just wanted to talk through what you're seeing over the past month and change there.
Steve Cutler (CEO)
Yeah, Pat, I mean, you know, I think we have to be a little careful here. RFPs are a marker for, you know, for new business wins, but they're not a perfect marker. We all know that. But, I mean, having said that, you know, what we've seen, as I said, over the first seven or eight weeks of the year is a nice uptick on a trailing, particularly on a trailing twelve-month and year-on-year comparison basis. As I said, mid-teens across the portfolio, but the majority of it is in the large pharma space. And, you know, that to us is good because, as I've mentioned, we have a better win rate in that.
So, you know, more dollars and more opportunities and a better win rate, means, you know, we feel good about where the large pharma space is going. Having said that, we're also seeing a more, more modest, but certainly an uptick, in our biotech opportunities. And that's, that's exciting for us as well, as we, as, as we're kind of really making a push on our, on our biotech profile in the industry. We have 7,000 people, focused on biotech, and they actually do focus on biotech.
It's not a smoke and mirrors thing with us. We have these people, you know, totally dedicated to this space. And so we're doing a bit more, talking about that with our customers, and I think that's starting to, to get some traction.
So overall, you know, we feel that we've kind of almost passed the, you know, got past that, the nadir. Perhaps the nadir was the fourth quarter, and we're starting to move... We've upped it a notch, I think, and it certainly feels to us like, we're moving. The train's moved away from the station, and we're starting to gain a bit of pace in that area. So, overall, as I say, pretty constructive about it.
Patrick Donnelly (Managing Director)
Understood. Thank you so much.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Jack Meehan from Nephron Research. Please go ahead.
Jack Meehan (Equity Research Analyst)
Thank you. Good morning and good afternoon. Wanted to ask about some of the customer disclosures you provide. So just, you know, recently, you've had pretty good growth from your largest customer. I was wondering if there are any, like, themes you would call out or therapeutic areas. Just how should we think about the durability of growth here?
Steve Cutler (CEO)
Yeah, I think, as you can see from the numbers we've reported, the largest customer did grow. That was specifically related to a couple of large projects that moved forward pretty quickly in the in the quarter. And so I'm, you know, I don't think we're necessarily seeing that as a sustained trend.
Alternatively, the 2-5 dropped a little bit, again, as it relates to one particular customer in there, where the mix shift was changing a bit. So, you know, these things change a little bit on a quarter-to-quarter basis, Jack. I wouldn't get too focused in on that as those are sort of long-term trends. We feel we're in a good place with our, you know, with our top 10, top, top 20 customers.
Jack Meehan (Equity Research Analyst)
Mm.
Steve Cutler (CEO)
They're all, well, apart from one or two, they're growing. And the ones that aren't growing, it's more a mix shift change rather than anything else. And then even so, we're seeing more of the business that they're wanting to go into, albeit it's, you know, it's at a different revenue flow. So, you know, overall, we feel good. I've said it a number of times. We've, you know, we've made progress on the strategic front, with a couple of customers, and even others in the large pharma space, where we haven't necessarily become a strategic partner with them. We're talking to them about some significant opportunities.
Some of them are, you know, having some challenges, as we all know, and that has led to probably more strategic discussions around what we can do and how we can help them to get through some of the short or medium-term pain that they have to endure. So, you know, I know we often think about when, you know, when customers are having a hard time sort of financially, that they necessarily cut costs or cut spending.
They can spend in different ways, in my experience, and sometimes that can be a significant benefit for us in terms of what they do versus when they're, you know, running and growing and, you know, their revenues are going up as well. Hard times produce opportunity for us.
Jack Meehan (Equity Research Analyst)
Mm.
Steve Cutler (CEO)
That's certainly proving the case in one or two areas on the significant-
Jack Meehan (Equity Research Analyst)
Mm.
Steve Cutler (CEO)
the large pharma space.
Jack Meehan (Equity Research Analyst)
Great. And as one follow-up, what's the latest tone you're hearing around the IRA? You know, I think there was a lot of, you know, maybe concern or uncertainty around that last year. Do you feel like, you know, customers have a greater handle around how that's gonna impact their R&D spend plan?
Steve Cutler (CEO)
You know, I haven't heard a lot that's changed since last year. You know, I do think there's some genuine concern from customers around how their organizations are gonna handle that. We, you know, we have a meeting in a couple of weeks with some of our largest customers, and that's a topic, you know, on the agenda to talk through with.
We have some external people coming in, so I'll get a better handle for it then. But I don't think things have changed dramatically. I know that's, it's moved forward. They're negotiating the pricing. We haven't seen, you know, we haven't seen... I don't think that's been necessarily a reason for any budget challenges that they've had at this point. These are changes that are gonna take some years to work in. And so, you know, the short answer to your question, Jack, is not much changed, really. They remain, I think-
Jack Meehan (Equity Research Analyst)
Mm-hmm
Steve Cutler (CEO)
... concerned and somewhat challenged by it, but they're looking at different ways of developing drugs in. We talked about, you know, doing it in concurrent, doing these developments concurrently rather than in series or in, and that gives us an opportunity to, you know, to expand the opportunity to get into market faster in multiple indications versus just waiting and doing it, as I say, sequentially. So again, sometimes these things and often these things give us opportunity because we represent, you know, a possibility of doing things in a different way.
Jack Meehan (Equity Research Analyst)
Sounds good. Thanks, Steve.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Elizabeth Anderson from Evercore ISI. Please go ahead.
Elizabeth Anderson (Senior Managing Director and Research Analyst)
Hi, guys. Good morning, and thanks for the question. I just wanted to follow up on some of the demand questions that have been asked before. You know, I think obviously one thing people continue to be worried about is, like, the overall sort of pharma spending environment, whether it's IRA specifically related or something else.
You know, it's obviously nice that you have that new strategic partnership. That's nice to see. Can you talk about sort of the level of visibility on some of your strategic partnerships with large pharma and how kind of you maybe they help you get a sense of sort of where their pipelines are going and help give people a little bit more confidence in the trajectory there? Thank you.
Steve Cutler (CEO)
Yeah, I mean, you know, I think with our strategic partners, Elizabeth, we do get some visibility on their pipelines, and that's one of the advantages of that partnership. We know what's coming down the pike. We know what therapeutic area we need to ramp up in. And through, you know, commitments and understandings and, you know, senior steering committee meetings, we're able to work out where we need to be as a partnership. You know, I'm not hearing again, at this stage, any further concerns on funding or on their R&D spend.
If anything, based on the RFP, opportunities we've got over the last, you know, couple of months, and even last quarter, last year, and the second and third quarter was strong as well, you know, we're seeing more opportunities. So, you know, I, I guess I keep saying it, but, you know, as their budgets become perhaps a little bit more constrained or they watch where they're spending their dollars, they, they, they do appear to be becoming more open to, you know, to outsourcing and outsourcing even more than they're doing at the moment.
So, you know, as I say, I can't add much in terms of where, where the, where the budgets are and whether it's an increase or, or decrease. We see, we read the same data you do in terms of, you know, modest increases in R&D spending over the, you know, the medium to long term, but it's how that, how that money's allocated is really what's important to us. And if anything, I think we're seeing more opportunity in terms of the, the dollars that are outsourced and the opportunity to penetrate further the, that market.
Elizabeth Anderson (Senior Managing Director and Research Analyst)
... Got it. That's super helpful. Thank you very much.
Steve Cutler (CEO)
Good.
Operator (participant)
Thank you. We'll now move to the next question. Please stand by. This is from the line of David Windley from Jefferies. Please go ahead.
David Windley (Managing Director)
Hi. Hi, good morning, good afternoon. Thanks for taking my questions. I wanted to explore margin a little bit. First, just in talking about the FSP shift, you've highlighted that it is very gradual. I get that. I my sense is that, at least what I'm aware of, is that at the gross margin level, the margin difference between full service and FSP would be quite a bit wider, and then at the, maybe at the, the EBITDA margin level, you get to that 200-300bps of margin difference because the SG&A load on FSP is lower.
You could correct me if I'm wrong there. So I guess I wanted to understand, maybe if you could quantify from a, you know, percentage of revenue basis, how gradual is this shift to FSP, such that you're, you know, you still think you can keep the gross margin at around 30%? I'll leave it there and come back with a follow-up.
Brendan Brennan (CFO)
Dave, I might take a crack at that one just to start off with. As you said, it is a gradual process, you know, and as we think through the impact of this and let's be honest as well and to forefront, we said at the start of this year, actually, if anything, the scale is probably tipped more towards the full service piece in terms of the opportunity that's out there.
So, I don't think... I'd start off by saying we've seen trends in moving from full service to FSP in the past. I don't know if this is structurally any different from the trends we've seen in the past, where some folks move in one direction, some folks move in the other direction. So that's probably the first important point to make.
I think your commentary is not incorrect in terms of by the time you get to EBITDA, it's, it's minimized. And we've talked about the fact that, you know, in excess of 20% of our business is in that kind of, you know, FSP share of our revenue portfolio. I mean, we don't see it moving materially enough, I suppose, to really shift the gross margin piece.
Certainly, in terms of what we can do, as we've talked about, the efficiencies we drive through, you know, good utilization of our workforce, through the use of automation, in terms of balancing out that any kind of mix shift that we have there. So I think we're a good organization. We've been doing FSP for a long time.
I think we're efficient at how we deliver on our FSP contracts, to the point that, you know, we can manage this and manage that growth. But I do think it's important to note that I don't think... I mean, I'm not even sure we'll see a material shift, in terms of the percentage, year-over-year from 2023 to 2024 in terms of the, FSP, non-FSP business. So it is gradual, and it will take time, and as I said, we've got other people going the opposite direction as well. We've got people moving away from FSP towards full service.
So I'm obviously not giving you maybe the granularity you'd like, but I do think we're very comfortable with, as we get through the course of this year, being able to maintain those gross margin profiles overall, and being efficient as an organization and very accustomed to both models, to be able to drop that margin improvement, that we talked about 50bps to the EBITDA line.
David Windley (Managing Director)
Got it. Okay. And I did note that you said that the incremental partnership was full service, so that probably factors in. My follow-up question is around the automation. I mean, in insomuch as, you know, notwithstanding your answer, this multi-year trend toward FSP, offsetting that with automation seems particularly important, and the improvement in your hours of automation seems pretty strategic and critical to your margin expansion strategy over the long term. So I've kind of a two-parter here. One, could you give us a sense of the cost of an automation hour versus the cost of a labor hour?
And two, insomuch as you finished the fourth quarter of 2023 higher than you expected, and so the full year, you know, you in air quotes, kind of pulled forward 20bps of margin expansion to 2023, to the full year of 2023, getting to 50bps is really more aggressive than, you know, or more aspirational than when you gave that guidance the first time. And maybe give us the comfort that you still think that full 50bps is achievable. Thank you.
Brendan Brennan (CFO)
I'll start maybe, Dave. I suppose the way we measure those hours that we're talking about, they're the equivalent hours that people would do. So if this was a job of work, we're talking about removing those hours from the organization. So when we talk about, like, the 2 million, we're talking about 2 million hours of kind of labor time removed from the organization.
I don't know if I have a bot or, you know, ratio for you that I can quickly give, unfortunately. But what we're talking about is a very substantial amount of hours of our average labor cost removed from the organization, and that's the target we think about in terms of how we measure that as an organization, and then also how we set a target.
I mean, obviously, 2 million hours of people's labor time, even if you say, take a blended rate and look at our different geographies around the world, and even if you said that this was occurring in lower-cost geographies, where you take the automation out, even if you made all those caveats, you're talking about very substantial savings as a result of this type of automation.
And so we do think you're absolutely right, it is an important and strategic element of our gross margin development, and something that we will be continuing to focus on over time. On the second bit, and then I'm sure Steve will want to chime in as well, but on the second piece-... You know, I think you know as well enough, Dave, at this point, to know that we generally don't talk about targets that we, we feel we can't hit. So we still do think the 50bps is right.
You're quite right, we ended up better than we thought we would. And so that's a, that's a more ambitious target. As I've said earlier in the call, I think it's more around kind of keeping that gross margin in the, in that 30% ballpark, and seeing continued leverage on our SG&A. And as, of course, you know, you, you saw an absolute dollar decrease in 2022 to 2023 of $25 million on our SG&A.
So, you know, we have, we've got a great experience there and an amazing team, that helps us deliver that leverage, and, and it's that kind of leverage we're looking for. Not quite that level of leverage. We don't need to absolute dollar drop, as we go into 2024, but we certainly need to see the vast majority of the leverage on the 50bps come from SG&A over the course of the year, and I think we've got a good plan to achieve that. I don't know, Steve, if you want to add?
Steve Cutler (CEO)
No, I think it's said it all.
David Windley (Managing Director)
You're right. Thank you. I do know you to be very good at that. You're right. Thanks.
Brendan Brennan (CFO)
You bet.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Max Smock from William Blair. Please go ahead.
Max Smock (Research Analyst of Healthcare)
Hey, good morning, good afternoon. Thanks for taking our questions. Just a couple quick ones for me here. So on direct fee versus pass-through revenue, I think it's been a couple of quarters now, where pass-through revenue has been a pretty meaningful headwind on the top line. Just wondering if you can give us direct fee revenue growth in total for 2023 versus pass-throughs, and then what you have embedded for each of these buckets in the top line guide for 2024.
Now, I'll just go ahead and ask my follow-up since it's related. How much of the margin improvement this year came from that mix shift to direct fee revenue, and then how are you thinking about the impact to margins from this potential mix shift in 2024? Thank you.
Brendan Brennan (CFO)
Max, I'll maybe give it a crack in terms of the 2022 over 2023 piece. Obviously, we've talked about direct fee being more in the high single digits. And as you can see, well, you know, you obviously can read what we did from a pass-through inclusive number for the full year. So yes, there was a continued headwind from pass-through as we came through the course of 2023.
You know, that has been somewhat of the consequence of the kind of vaccine and then moving more towards our more traditional, let's call it, therapeutic mix of more oncology, more orphan-type therapies that have longer durations. And so we've seen that as a headwind over the last couple of years.
You know, it's something not peculiar to 2023. You know, we do feel like we're coming, you know, you know, we're getting to the shorter yards on that. We talked about our, you know, the mix of that probably still being, you know, to some extent, a headwind as we go into 2024, but not to the same extent as we've seen in 2023, particularly. And we've also talked about, you know, our expectation around our COVID, non-COVID mix is probably not dissimilar in the 3%-4% range, both in 2023 and in 2024.
So, yeah, we would like to think it will step down a little bit in terms of a headwind as we go into 2024, but of course, we'll see how that plays out during the course of the year, and we'll give you more granularity on that as we go through. What's the second part of the question? Sorry, I didn't scribble it down.
Steve Cutler (CEO)
Mix shift.
Brendan Brennan (CFO)
Mix shift. We talked about. Yeah, exactly. We'll give you. I think as, as we go through the course of the year, that mix shift will, will give you a bit more granularity.
Max Smock (Research Analyst of Healthcare)
Sounds good. Thank you.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Ann Hynes from Mizuho Securities. Please go ahead.
Ann Hynes (Senior Healthcare Services Equity Analyst and Managing Director)
Hi, good morning. I just want to focus on capital deployment. I know in your prepared remarks, you talked about M&A. Do you have an announced M&A in your guidance? Would be my first question. My second question would be maybe types of assets you're looking for that maybe you need to bulk up. And then with the share repo, I know that's not in guidance, and how do you balance M&A versus share repo for this year?
Steve Cutler (CEO)
Okay, and the answer to your question is no, in your first question anyway. We don't have any M&A in our guidance, so just to be clear on that. In terms of-
Ann Hynes (Senior Healthcare Services Equity Analyst and Managing Director)
New M&A, sorry, just new, new M&A. The previously announced M&A obviously is in there from fill-ins and,
Steve Cutler (CEO)
That's right. Yes. Yes.
Ann Hynes (Senior Healthcare Services Equity Analyst and Managing Director)
Yeah.
Steve Cutler (CEO)
Yes, that's in there. That's in there. That, yeah, previously announced, yes, but there's nothing new in there. In terms of how we're looking at share buyback, you know, we're at kind of a pivotal point with the organization. We've done, I think, a very good job in paying down our debt. We're at 2x adjusted EBITDA. Now, that's a good place to be, and quite frankly, we wanna be... You know, we wanna remain within kind of 1.5x-2.5x. So as we, you know, we have some potential... We, you know, we're still gonna make another payment this quarter in terms of our debt.
We'll be working hard to restructure that and get ourselves into a situation of certainty on what our interest payments will be. We've talked about the $100 million improvement, or reduction in interest rate, interest rates fees from 2024 versus 2023. And as we do that, as we move, and particularly we get towards the second half of this year, the M&A area is becoming much more important.
And so we're actively looking at the moment, because these things take a little time, at a number of areas on the M&A front. We've talked about, you know, being building out an Accellacare site network, and being stronger in that space. The labs represent an opportunity for us, whether it be in the specialty labs or the central lab. So we, you know, we, our lab is, is not within the top three at the moment. We'd like to be within the top three, and so we see some opportunity there.
And then there are some other sort of around sites and patients and services around conc- concierge services, around. So even, even areas like, devices. There are a number of areas we're looking at very hard from an M&A, and that, that remains. As we get and restructure our debt and move forward with that, the M&A becomes our priority for capital deployment. The share buyback is there, and we've, we've, as I say, received authorization from the board to do that, and we'll deploy that.
We'll use that as and when we see fit, opportunistically, and particularly if we don't find anything on the M&A front that we feel we can execute effectively and at a reasonable price. But at the moment, we feel there are some opportunities out there to buy, you know, organizations and capabilities that really fit with our organization and fit with our capabilities, and really allow us to prosecute clinical trials, you know, faster, better, and more efficiently for customers, and that remains the absolute priority.
Ann Hynes (Senior Healthcare Services Equity Analyst and Managing Director)
Great. Just on your revenue guidance, there is a wide range. Can you just go through what gets you to the low end and what gets you to the high end? What are the big variant factors?
Brendan Brennan (CFO)
Yeah, I'll take that, Anne. You know, it, there is a wide range, and we'll be narrowing that as we go through the course of the year, without doubt, and we may even think about that in quarter one or quarter two. You know, I think we're still looking at a market, certainly when we set the guidance, that we had some element of uncertainty in it, and we were trying to really reflect that. You know, there are obviously some opportunities.
You know, Steve made reference to the fact that there could be some additional vaccine work that could burn quickly through that, and that might help us to get up into the higher end of the range. And likewise, there's always the risk of cancellations in this nature of the business. That's just the nature of the world, right? So as we get more certainty, certainly we'll be narrowing that range, as we get into the year. But certainly, I would always say to people when asked, midpoint is as good a place as any, right? So if you're trying to do your modeling, that's where I'd send you to.
Ann Hynes (Senior Healthcare Services Equity Analyst and Managing Director)
Okay, great. Thanks.
Operator (participant)
Thank you. We'll now take our next question. This is from the line of Jack Boris from Guggenheim Partners. Please go ahead.
Jack Boris (Equity Research Analyst)
Hey, thanks for taking my question. I'll keep this brief. I was just wondering, given the, you know, market dynamics and some of the pressures facing your customers, particularly the largest ones, if there's any incremental appetite utilizing risk-rased monitoring, and if we'll follow up to that, if some of your investments in AI could be an accelerant for that. Thank you.
Steve Cutler (CEO)
Okay, so Jack, as I understand your question, is there any incremental appetite for risk-based monitoring based on some of the financial challenges? I mean, I wouldn't necessarily associate risk-based monitoring with financial challenges. I mean, risk-based monitoring is part of what we do on a normal basis now, you know, where we focus our attention and our resources on sites or patients or areas of the data collection process that has the greatest risk.
And we use particularly offsite and our IT technology, some of our newest IT technology, to identify, you know, data that perhaps needs further scrutiny. And it is a more efficient way of doing it. So to that extent, you know, you're getting... We're spending our customers' dollars more effectively and more efficiently. But I'd, I think of it in those terms, rather than as a, as a cost reduction way of doing things. It's just a more effective way of deploying dollars around the clinical monitoring processes, is what I'd put it. Does that answer your question?
Jack Boris (Equity Research Analyst)
On the risk? Yeah. No, that does. I appreciate it. Thank you.
Steve Cutler (CEO)
Yeah. Yeah.
Operator (participant)
Thank you. We'll now take the next question. This is from the line of Dan Leonard from UBS. Please go ahead.
Dan Leonard (Managing Director and Research Analyst of Life Science Tools, Services and Diagnostics)
Thank you. Just a couple of cleanups. First off, on the COVID work, can you remind me what percentage of your backlog at this point is COVID, and how you expect sales to trend in 2024?
Speaker 18
Hey, Dan. They're, they're well aligned in terms of the backlog and the percentage of revenue in that range of 3%-4% for the full year.
Dan Leonard (Managing Director and Research Analyst of Life Science Tools, Services and Diagnostics)
Thank you. And the other cleanup, can you give an acquisition sales contribution figure in the quarter? If you did, I missed it from the deals you've already announced. And then how much is in that 2024 guide?
Brendan Brennan (CFO)
Oh, it's not huge. I mean, you know, it's like a 10 in the quarter. It'll be, you know, in that ballpark for the full year in terms of, you know, 10 a quarter, is not far off.
Dan Leonard (Managing Director and Research Analyst of Life Science Tools, Services and Diagnostics)
Thank you.
Operator (participant)
Thank you. We'll now take the next question. This is from the line of Derek DeBruin from Bank of America. Please go ahead.
Mike Ryskin (Managing Director)
Hey, thanks for taking the question. This is Mike Ryskin on for Derek DeBruin. Same thing, a couple minor cleanups. One is just could you clarify exactly what the pricing assumption is for 2024? I know you talked about price qualitatively, but if you could quantify it. And then also on the interest expense, the $100 million year-over-year, all that makes sense, and you talked about some of the payments coming in over the course of the year, but just anything on pacing as we go through the year, just from modeling, you know, when should we, when and how should we pace that through the year? Thanks.
Brendan Brennan (CFO)
On the pricing piece, Mike, it very much depends. There's no straight answer to that one. Of course, we have inflationary increases in most of our contracts, and we have those negotiations with our customers at the start of the year. They obviously follow kind of, you know, CPI index in terms of inflationary pieces, so that's a conversation that happens every year.
It's progressing around this time of the year again, but each new business will depend on the individual customer. And on the $100 million of the... I mean, I would say probably more back-ended. We want to try to get all of this sorted out in H1. I would say, stepping down quarter by quarter, but probably more dramatically in the second half.
Mike Ryskin (Managing Director)
Thanks, guys.
Operator (participant)
Thank you. We have one more question. This is from the line of Casey Woodring from JP Morgan. Please go ahead.
Casey Woodring (VP of Equity Research)
Great. Hi, thank you for squeezing me in. A lot's been asked, but want to follow up on the strategic partnership questions. Just wondering how many of those types of partnerships you have now? And is there a way to size this new opportunity that you called out this quarter, and then the total opportunity of those partnerships in aggregate? And then also, just what gives your full service offering a competitive advantage in winning those types of partnerships? Thanks.
Steve Cutler (CEO)
Just a minor question at the end there, Casey, is a competitive advantage of us over the industry. Let me start with the strategic partnership. You know, we're not ready to sort of size it at that stage. You know, we think of these things as being at least, you know, ultimately, at least at the sort of $200 million in revenue annually. That's what our expectation is, as you become a strategic partner with a top 20, top 30 pharma company. I don't have a number for what the entire strategic partnerships give us, at least not on the top of my head.
We are what we would call strategic with a significant majority of the top 20 pharma companies at the moment. Now, I think we talked about when we got together with PRA 18 months ago or so, 20 months ago. I think we had 13 on. We've advanced that by several now, something like 16 or so. So we've made some significant progress there. And importantly, there are a number of companies, while we haven't, you know, necessarily signed an MSA or become a strategic we are talking to them, and we are getting opportunities from them.
So often, this is a process that can take a year or two, not just to win the partnership or to be considered a strategic partner, but ultimately, as the business ramps up with it. So these are things that don't-- aren't gonna have a sort of an immediate impact on our revenues. But we are seeing certainly opportunities, and they are, to be quite honest, starting to drive those RFP improvements that I talked about. In terms of competitive advantage, you know, we're a scale player now, and our union with PRA, that's now, as I say, 20 months ago, is... No, it's more like 30 months ago, isn't it?
Casey Woodring (VP of Equity Research)
Yeah.
Steve Cutler (CEO)
Middle of 2021 has made a major contribution to that. I would say the people that we brought on have made a major contribution to our organization, and as a scale player within the clinical development space, you know, we have the technology, we have those resources, that depth and breadth of capability. We have the platforms, the decentralized platforms.
And that really gives us a ticket to the table pretty much every time now. So there are very few of these sort of partnership discussions we're excluded from, whereas, you know, I can certainly look back five years ago and say we probably didn't make it to the table in a number of instances. And so, you know, that's changed. Now, in terms of specific advantages over our bigger competitors, you know, I would say our site network is one that gives us some opportunity.
And I think the technology that we have and that we've been able to deploy around our site network, be it OneSearch or some of the technology that we've been public about as well, has also given us some advantage over that. And then, you know, you look at the mix of services. We have our functional services group is a significant one. Our full service is a significant one. The focus that we have in the biotech segment versus other.
All of those things, you know, I think are important as we contemplate strategic partnerships with large companies and as we compare ourselves against our competitors, our larger competitors. Everyone has something, and in our business, it's a multi-factorial sort of deal. There's no one sort of key advantage that puts you ahead.
There's no intellectual property or anything like that for us, unfortunately. We have to rely on our wits and our brains and the decisions we make in a number of factors, even down to the project manager who runs the project. There are lots of things that are important for us as we go up, whether it be a strategic partnership or a normal project. They're all important, and we think we compete very well in that space now.
Casey Woodring (VP of Equity Research)
Thank you.
Steve Cutler (CEO)
Okay. Okay, so I think, thank you, operator. I think we're done with the questions. Appreciate the input and the questions from everyone. So thank you for joining the call today. Your continued interest, and for your continued interest in ICON. We're excited, certainly very excited for the opportunity ahead.
We believe we're at a really pivotal point in our company's development now, and I think that's been evidenced by some of the things we've... Some of the comments we've made today around those strategic partnerships and the opportunities that we have going forward. So, thank you for the questions, and have a good day.
Operator (participant)
Thank you. This concludes the conference for today. Thank you for participating, and you may now disconnect. Speakers, please stand by.