Mike Wagnes
Senior Vice President, Chief Financial Officer at Allegion
Thanks John, and good morning, everyone. Thank you for joining today's call. Please go to slide number five. As John shared, our Q3 results reflect solid performance from the entire Allegion team. We continue to execute at a high level, delivering another quarter of strong margin expansion with mid-single-digit top line growth, driven by price, volume and acquisitions.
Revenue for the third quarter was $967.1 million, an increase of 5.4% compared to 2023. Organic revenue increased 3.3% in the quarter as a result of favorable price and volume. We saw strength within our Americas segment, with international organic revenue relatively flat in the quarter. Our Q3 adjusted operating margin and adjusted EBITDA margin both increased by 100 basis points, driven by pricing productivity in excess of inflation and investment, as well as favorable volume leverage. I'm pleased with the operational execution and margin expansion in 2024.
Adjusted earnings per share of $2.16, increased $0.22 or 11.3% versus the prior year. Strong operational performance, accretive capital deployment and favorable interest and other more than offset headwinds from higher tax. Finally, year-to-date 2024 available cash flow was $388 million, which was 21.1% increase versus last year. I'm pleased with our cash flow and working capital management and we'll provide more details a little later in the presentation.
Please go to slide number six. This slide provides an overview of our quarterly revenue. I will review our enterprise results here before turning to our respective segments. Organic revenue grew 3.3% in the quarter, which included price realization of 1.8% and volume growth of 1.5%. Acquisitions drove approximately two points of growth in the quarter. Additionally, currency was a slight tailwind, bringing total reported growth to 5.4%. Q3 revenues was sequentially consistent with Q2 and reflects a more normal seasonality compared to an unusual 2023, as we indicated previously.
Please go to slide number seven. Our Americas segment delivered strong operating results in Q3. Revenues of $782.4 million, was up 5.6% on a reported basis and up 4.1% on an organic basis. Organic growth included both favorable price and volume in the quarter. Reported revenue included 1.6% growth from the June acquisitions of Krieger and Unicel. Our non-residential business increased mid-single digits organically in the quarter as institutional end-markets remained stable. Our residential business was up low-single digits, similar to what we saw in Q2. Electronics revenue was down high single-digits compared to Q3 last year, which included significant catch-up in volumes as supply chains recovered from disruptions that we experienced in 2021 and 2022. It's worth noting Q3 electronic revenue dollars were flat sequentially to Q2 levels, generally following the seasonality of the rest of the business. We continue to believe electronics are a long-term growth driver for Allegion.
Americas adjusted operating income of $231.1 million, increased 9.7% versus the prior year period due to solid top line growth and strong operational execution. Adjusted operating margin and adjusted EBITDA margin for the quarter were up 110 basis points and 120 basis points, respectively as we continue to drive margin expansion through price and productivity in excess of inflation and investments.
Please go to slide number eight. Our International segment had a solid third quarter. Revenue of $184.7 million, was up 4.4% on a reported basis and up 0.2% organically. Acquisitions were a tailwind this quarter, positively impacted reported revenue by 2.9%, driven by the Dorcas and Boss businesses. Currency was also a tailwind contributing 1.3 points of growth. International adjusted operating income of $25.2 million, increased 6.3% versus the prior year period. Adjusted operating margin and adjusted EBITDA margin for the quarter increased 20 basis points and 10 basis points, respectively. Margin expansion was driven by price and productivity exceeding inflation and investments, offsetting the volume decline.
Please go to slide number nine, and I will provide an overview of our cash flow and balance sheet. Year-to-date available cash flow came in at $388 million, up $67.6 million versus the prior year. This increase is driven by higher earnings and improvements in working capital, partially offset by higher capital expenditures. Next, working capital as a percent of revenue improved as we continue to focus on working capital efficiency to convert earnings to cash.
Finally, our balance sheet remains strong, and our net debt to adjusted EBITDA is at a healthy ratio of 1.7 times. It's worth noting our gross debt and cash balances at September 30, 2024, include the proceeds from our $400 million senior note issuance in Q2, which were used to repay a $400 million senior note on October 1. This results in a slightly higher gross leverage at the end of the third quarter, but has no impact on net leverage. Our business continues to generate strong cash flow and our balance sheet supports continued capital deployment.
I will now hand the call back over to John.