Edward A. Schlesinger
Executive Vice President and Chief Financial Officer at Corning
Thank you, Wendell. Good morning, everyone. Building on last year's strong performance, we grew full year sales 5% to $14.8 billion and EPS 1% to $2.09. We outperformed our consumer-facing end markets, we continue to capture growth in solar and we delivered record sales of $5 billion in optical communications. In total, we had a solid year, and our results reflect our resilience in the face of ongoing external challenges.
As you heard from Wendell, our profitability and cash flow have lagged our strong sales growth. To address this, we took further actions, including raising prices again in Optical Communications and Life Sciences to more appropriately share the inflationary costs with our customers, adjusting our productivity ratios closer to historical metrics without impacting our ability to supply and capture future growth and reducing inventory by $115 million in the fourth quarter. We will start to see the benefits of these actions in the first quarter despite suppressed sales from the disruption and low consumer sentiment in China that Wendell described.
With that, I will turn to our fourth quarter performance. Sales in the fourth quarter were $3.6 billion and EPS was $0.47, both coming in at the high end of our guidance. Fourth quarter gross margin was 34%, down 250 basis points sequentially. And operating margin was 14%, down 290 basis points sequentially, both including the impact of reducing inventory. EPS was favorably impacted by $0.03 due to a tax adjustment. Through the third quarter, our estimated tax rate was 20.5%. Our actual 2022 tax rate was 19.3%. The required adjustment resulted in an unusually low 15% core tax rate in the fourth quarter.
Now let's take a closer look at our segment results for the fourth quarter and full year, beginning with Optical Communications. Fourth quarter sales were $1.2 billion, down $122 million sequentially, reflecting the slower pacing of customer projects that we discussed on our last call. Net income was $130 million, down $53 million sequentially on lower volume and the impact of reducing inventory. The strength of the first 3 quarters of 2022 drove annual sales to an all-time high of $5 billion, reflecting a 15% increase, while net income grew 20% year-over-year to $661 million.
Moving to Display. On our last call, we said we believed panel maker utilization had reached bottom in September, but it was too early to call the timing or the shape of the recovery. We were then very encouraged to see panel maker utilization levels climbed in October and then again in November, indicating a recovery had begun. However, in December, China reopened and a significant wave of COVID outbreaks ensued, panel maker utilization leveled off in December and has since decreased in January. We believe that panel maker utilization will resume its recovery.
In January, panel makers are operating below the current reduced rate of demand. I'll cover more on our Display outlook in a moment. Display sales in the fourth quarter grew 14% sequentially to $783 million. Net income was $171 million, up 28% sequentially on strong execution and the additional volume. Fourth quarter glass price was consistent with the third quarter as expected. For the full year, sales were $3.3 billion and net income was $769 million, both down year-over-year, reflecting the impact of the industry correction in the second half. Glass price for the full year was consistent with 2021.
We anticipate glass price in the first quarter of '23 to be consistent with the fourth quarter, and we expect the favorable glass pricing environment we experienced over the last few years to continue, driven by 2 factors: first, glass makers continue to align supply to demand. Corning and other glass makers have been taking additional tanks offline for maintenance and repairs after an extended period of glass tightness. As we've told you before, we are taking this opportunity to upgrade our fleet with the latest technology, and we are actively managing the timing of tank restarts to align our supply to demand.
Another factor is glassmakers profitability. It is challenging for glass makers who have high fixed costs to maintain profitability during this period of low volume and high inflation. We have maintained stable price and market position through this industry correction and as demonstrated in the fourth quarter when the market recovers, incrementals from our increased volume will be meaningful.
In Specialty Materials, fourth quarter sales of $505 million were down 3%, but we outperformed our markets driven by customer product launches and continued strong demand for premium glasses and advanced optics products. Full year sales were $2 billion, flat year-over-year. Gorilla Glass sales were down 5%, outperforming the smartphone market, which was down 11% and IT market, which was down 15%. Advanced Optics grew sales 12% driven by the strength of our next-generation semiconductor equipment materials.
Full year net income was $340 million, down 8% year-over-year due to continued investment in next-generation materials for consumer electronics and semiconductor equipment as well as new markets, such as bendable devices and augmented reality.
In Environmental Technologies, fourth quarter sales were $394 million, up 12% year-over-year. And net income was $69 million, up 28% year-over-year. Sequentially, fourth quarter sales were down 7%, impacted by a decline in China OEM production levels in December, driven by similar COVID dynamics I mentioned in Display.
Full year sales of $1.6 billion were flat versus 2021 as light and heavy-duty markets in China remain weak and global auto market growth was restricted. Net income for the full year increased 9% to $292 million as we improved our productivity and raised prices.
Turning to Life Sciences. Fourth quarter sales were $294 million, down sequentially and year-over-year, impacted by lower demand for COVID-related products. Fourth quarter net income was down, driven by lower sales and the impact of reducing inventory.
Full year sales of $1.2 billion were consistent with a strong 2021, while net income was $153 million, down 21% as the unexpected shift in demand away from COVID-related products led to a significantly lower productivity in our manufacturing operations.
And finally, in Hemlock and emerging growth businesses, sales in the fourth quarter were $462 million, up 22% year-over-year and 14% sequentially. And full year sales were $1.7 billion, up 34% year-over-year, reflecting strong demand for polysilicon as we continue to see robust demand for both semiconductor and solar grade polysilicon. We also saw strong growth in Automotive Glass Solutions and Pharmaceutical Technologies.
To close out my segment recap, we're pleased that our more Corning approach and secular trends in optical and solar enabled us to grow sales and outperform our markets.
Turning to our outlook. We maintain an attractive long-term trajectory and are well positioned to capture growth. Looking at the near term, typically, in the first quarter, our sales declined about 5% sequentially and margins declined about 1 to 2 points. This quarter, we expect a sequential sales decline of 6% to 11%. In contrast, with the recent price and productivity actions we've taken, we expect about a 1- to 2-point margin improvement in the first quarter.
In total, for the quarter, we anticipate core sales in the range of $3.2 billion to $3.4 billion and EPS in the range of $0.35 to $0.42. Our first quarter sales outlook reflects the current dynamics in China since COVID restrictions were lifted in December. The situation has impacted consumer sentiment and labor availability, which is playing out across some of the industries we serve.
For example, in Display, as I mentioned, we saw panel maker utilization decline in January back to October levels. With that, we now believe the display industry recovery has been delayed by at least a quarter. And in environmental, we expect the lower OEM production levels we saw in December to remain in the first quarter.
We will have a better feel for the situation in China after the Lunar New Year, and we'll share more with you as we go through the quarter. As a reminder, the first quarter is usually our lowest volume quarter of the year. So we expect sales to grow sequentially in the second quarter. And I'll also note that we expect 2023 full year capital expenditures to be consistent with 2022.
Before I close, I want to cover 2 other topics. First, I want to take a minute to address currency exchange rates. As a reminder, we have actively hedged our foreign currency exposure over the past decade. This serves as an effective tool to reduce earnings volatility, protect our cash flow, enhance our ability to invest and protect shareholder returns. Our largest exposure is the Japanese yen.
As we've previously shared with investors, we have most of 2023 hedged. We now also have most of 2024 hedged. We expect to keep our core rate at 1-0-7, at least through the end of 2024. We're very pleased with our hedging program and the economic certainty it provides. We've received more than $2 billion in cash under our hedge contracts since their inception.
Second, as CFO, in addition to investing for organic growth, my top priorities include maintaining a strong and efficient balance sheet and returning excess cash to shareholders. Examples include creating one of the longest debt tenors in the S&P 500. Our current average debt maturity is 25 years, with only $1 billion in debt coming due in the next 5 years and no significant debt coming due in any given year. And our interest rate exposure is very low because essentially all our debt instruments are fixed rate.
Additionally, over the last 4 years, we have consistently returned excess cash to shareholders even throughout the pandemic, and one of the ways we do that is through dividends. We have grown our dividend 35% since 2019, and we have increased our dividend for 12 consecutive years. Our dividend yield is top quartile in the S&P 500 at 3%. As we enter 2023, we will recommend that our Board approve an increase in the quarterly dividend, raising the annual rate from $1.08 to $1.12 per share.
Stepping back, our long-term growth drivers all remain intact. As markets recover, sales growth will resume and we're well positioned to continue capturing growth tied to key secular trends, such as optical and solar. In the face of ongoing macroeconomic challenges, we grew our sales 5% in 2022 and delivered a CAGR of greater than 8% since 2019. We have adapted to meet near-term needs, taking actions throughout this period. And while our profitability and cash flow have been impacted, we expect to see the benefits of additional actions we took in Q4, in our Q1 results and throughout the year.
With that, I'll turn it back over to Ann for Q&A.