$275.5 million, or $1.07 per share on a diluted basis of 258.6 million shares. In the year ago period, the Company reported net income of $209.2 million, or $0.81 per share on a diluted basis of 258.1 million shares.
Adjusted net income(b) in the second quarter was $320.0 million, or $1.24 per diluted share, versus $262.3 million, or $1.02 per diluted share, in the prior year period. Adjusted EBITDA(b) in the second quarter was $731.8 million, as compared to $628.9 million in the prior year period. Adjusted net income, adjusted net income per diluted share and adjusted EBITDA, all non-GAAP measures, primarily exclude impairments and acquisition-related items, as reflected in the detailed reconciliations in the attached tables.
Six Months Year to Date Results
For the six months ended June 30, 2024, revenue was $4.321 billion, up from $3.922 billion in the year ago period. Operating income, which included $27.2 million primarily attributable to transaction-related expenses and impairments and other operating items was $791.5 million, as compared to operating income of $658.8 million in the prior year period, which included $32.1 million primarily attributable to executive separation costs, impairments and other operating items, and transaction-related expenses.
Net income for the six months ended June 30, 2024 was $505.5 million, or $1.96 per share on a diluted basis of 258.5 million shares. In the year ago period, the Company reported net income of $407.0 million, or $1.58 per share on a diluted basis of 258.1 million shares.
Adjusted net income(b) for the six months ended June 30, 2024 was $588.7 million, or $2.28 per diluted share, compared to $492.7 million, or $1.91 per diluted share, in the year ago period. Adjusted EBITDA(b) for the six months ended June 30, 2024 was $1.382 billion, as compared to $1.196 billion in the prior year period.
Updated 2024 Outlook
Waste Connections also updated its outlook for 2024, which assumes no change in the current economic environment or underlying economic trends. The Company’s outlook excludes any impact from additional acquisitions that may close during the year, and expensing of transaction-related items. The outlook provided below is forward looking, and actual results may differ materially depending on risks and uncertainties detailed at the end of this release and in our periodic filings with the U.S. Securities and Exchange Commission and the securities commissions or similar regulatory authorities in Canada. Certain components of the outlook for 2024 are subject to quarterly fluctuations. See reconciliations in the attached tables.
| - | Revenue is estimated to be approximately $8.850 billion, up $100 million from our original outlook. |
| - | Net income is estimated to be approximately $1.087 billion, and adjusted EBITDA(b) is estimated to be approximately $2.900 billion, or about 32.8% of revenue, as compared to our original outlook for adjusted EBITDA(b) of $2.860 billion or 32.7% of revenue. |
| - | Capital expenditures are estimated to be approximately $1.150 billion, in line with our original outlook. |
| - | Net cash provided by operating activities is estimated to be approximately $2.337 billion, and adjusted free cash flow(b) is estimated to be approximately $1.200 billion, in line with our original outlook. |
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(a) All references to "Net income" refer to the financial statement line item "Net income attributable to Waste Connections"
(b) A non-GAAP measure; see accompanying Non-GAAP Reconciliation Schedule