David Zapico
Chairman of the Board and Chief Executive Officer at AMETEK
Thank you, Kevin, and good morning, everyone. Before I get into the financial results for the quarter, it is with mixed emotions that I share the news of changes in our financial leadership, which we announced on January 16. After an outstanding 36 year career at AMETEK, our Chief Financial Officer, Bill Burke has decided to embark on a well deserved retirement effective April 2, 2024. Bill's tremendous leadership of our finance organization and his strategic guidance has been instrumental in AMETEK's long-term growth and success. His legacy is deeply woven into the fabric of our organization and we express our heartfelt gratitude for his exceptional contributions.
In light of this transition, I'm delighted to announce the appointment of Dalip Puri as our new Executive Vice President and Chief Financial Officer. Dalip, currently serving as Senior Vice President, Operational Finance, brings a wealth of experience and expertise to this role. Dalip joined AMETEK in 2017 as Treasurer and subsequently took on the role of Group Controller, providing financial oversight for over half of AMETEK's businesses before transitioning into his current role of Operational Finance.
Dalip's leadership of key financial initiatives at AMETEK, along with a proven track record, make him the natural choice to lead our financial organization into the future. I am confident that under Dalip's leadership, our financial organization will continue to thrive, contributing significantly to the success of AMETEK. To ensure a seamless transition, Bill will stay on as a senior advisor until April 2025. Thank you, Bill for your exceptional service and congratulations Dalip. I'm truly excited about the future.
Now, let me turn to this quarter's results. AMETEK delivered exceptional performance in the fourth quarter, delivering record results and outstanding operational execution, leading to results ahead of our expectations. In the quarter, we set records for sales, operating income, earnings per share, EBITDA and cash flow. We also ended the quarter with record backlog.
Furthermore, in the quarter, we successfully deployed over $2 billion on strategic acquisitions, enhancing our portfolio with the acquisitions of Amplifier Research and Paragon Medical. These results cap a record year for acquisitions and underscore the strength of the AMETEK growth model, the quality of our businesses and the success of our organic growth initiatives. AMETEK's continued success is also the result of the dedicated efforts of our global employees. I want to thank all AMETEK colleagues for your efforts and significant contributions in 2023.
Now let me turn to our fourth quarter financial results. Fourth quarter sales were a record $1.73 billion, up 6.5% over the same period in 2022. Organic sales growth was approximately 1.5%. Acquisitions added 4 points and foreign currency added 1 point. We ended the quarter with a record backlog of $3.53 billion, which is up 10% from the start of 2023.
AMETEK's operational performance in the quarter was outstanding with robust margin expansion and strong incremental margins. Operating income in the quarter was a record $445 million, a 12% increase over the fourth quarter of 2022. Operating margins were 25.7% in the quarter, up an impressive 120 basis points from the prior year, while core margins were up 200 basis points in the quarter. This strong margin expansion reflects the strength and flexibility of our operating model and the quality and differentiation of our businesses.
EBITDA in the quarter was a record $526 million, up 8% over the prior year with EBITDA margins, an impressive 30.4%. Our strong growth and operating performance led to robust cash generation with free cash flow up 47% in the quarter to a record $481 million. This tremendous operating performance led to record diluted earnings per share of a $1.68, up 11% versus the fourth quarter of 2022 and above our guidance range of a $1.61 to a $1.63 per share.
Now let me provide some additional details at the operating group level. First, the Electronic Instruments Group. The Electronic Instruments Group had an excellent quarter with strong sales growth and tremendous operating performance. Sales for EIG were a record $1.24 billion in the quarter, up 7% from the fourth quarter of last year.
Organic sales were up 3.5%. Acquisitions added 3 points, with currency accounting for the balance. EIG sales growth in the fourth quarter was strongest across our aerospace and defense businesses and our materials analysis division. EIG's operating performance was impressive with strong profit growth and exceptional margin expansion. Operating income was a record $359 million, up 17% versus the prior year, while EIG operating margins were 29%, up an outstanding 250 basis points from the prior year.
The Electromechanical Group also finished the year with strong performance despite the continued impact from the normalization of inventory levels across our OEM customer base. Fourth quarter sales for EMG were $495 million, up 6% versus the prior year driven by the contributions from recent acquisitions. EMG's fourth quarter operating income was $112 million, where operating margin -- operating income margins were 22.7% in the quarter. Excluding the dilutive impact from acquisitions, EMG core margins were up 100 basis points versus the prior year.
Now, for the full year results. Overall performance was outstanding in 2023, establishing annual records for essentially all key financial metrics. Overall sales for the year were $6.6 billion, up 7% from 2022. Organic sales increased 4%, with acquisitions accounting for the balance of the growth. Operating income for 2023 was $1.7 billion, up 14%, and operating margins were 25.9% for the full year, with margins up 150 basis points versus the prior year. EBITDA for the year was $2 billion, with EBITDA margins, a very strong 30.5%. In full year 2023, earnings were $6.38 per diluted year, up 12% versus the prior year.
Our performance in the fourth quarter and full year highlights the strength of the AMETEK growth model. Our differentiated businesses are strategically aligned with diverse and attractive markets, while our organic growth initiatives position us for sustained long-term growth. Our distributed operating structure empowers our businesses to execute in their growth strategies and quickly adapt to evolving market dynamics. This structure is a cornerstone of the success in navigating throughout different economic cycles.
Furthermore, our asset-light business model and strong operational execution result in exceptional cash flow generation. This robust cash flow coupled with our strong balance sheet provides AMETEK with plenty of firepower to support our growth initiatives and to deploy on acquisitions.
Speaking of acquisitions, we were very active in 2023, successfully deploying approximately $2.25 billion on five acquisitions, including the acquisitions of Amplifier Research and Paragon Medical in the fourth quarter. I am very excited to welcome all acquired companies to AMETEK. Each acquisition is an excellent strategic fit with AMETEK as they help expand our product and technology offerings in highly attractive growth markets and applications, including renewable energy development and the modernization of the power grid.
In addition, our latest acquisition, Paragon Medical, which we closed in the middle of December, nicely expands our presence in the medical technology market. Paragon is a leading manufacturer specializing in highly engineered medical components and single-use and consumable surgical instruments. Their product portfolio spans crucial medical applications, and their reputation for quality and precision has earned them the trust of a diverse customer base including top tier medical device OEMs. Looking ahead to 2024, our acquisition pipeline remains robust. As noted, we have a strong and flexible balance sheet and anticipate remaining active deploying capital on acquisitions.
In addition to our acquisition strategy, AMETEK remains committed to making strategic investments in organic growth initiatives. In 2023, we invested an incremental $100 million in growth initiatives, and in 2024, we expect to invest another incremental $100 million. The majority of this investment will be within our research, development and engineering and sales and marketing functions.
In the quarter, our vitality index, which reflects sales from new products introduced in the last three years, was a very healthy 29%. Through these strategic investments and acquisitions, we have seen a steady transition of AMETEK's portfolio with an expanded presence in secular growth markets and reduced exposures in more cyclical markets. This strategic evolution of the portfolio, combined with our proven operational acumen, positions AMETEK well for continued strong and sustained growth.
Now, shifting to our outlook for the year ahead. For 2024, we expect overall sales to be up low double-digits on a percentage basis with low to mid single-digit organic sales growth. Diluted earnings per share for the year are expected to be in the range of $6.00 to $6.85, up 5% to 7% compared to last year's results. For the first quarter, we anticipate overall sales to be up low double-digits with adjusted earnings of $1.56 to a $1.60 per share, up 5% to 7% versus the prior year.
In summary, AMETEK's performance in the fourth quarter and throughout the full year of 2023 was outstanding. Our businesses delivered exceptional results, with all elements of the AMETEK growth model playing a key role in our success.
I will now turn it over to Bill Burke, who will cover some of the financial details of the quarter, and then we'd be glad to take your questions. Bill?