Exhibit 99.1 Ferguson Reports Second Quarter Results Continued Execution with Full Year Guidance Unchanged Second quarter highlights - Sales decline of 2.2%, largely driven by deflation of approximately 2%. - Operating margin of 7.1% (7.8% on an adjusted basis) in our seasonally lightest quarter with fiscal year to date operating margin of 8.5% (9.0% on an adjusted basis). - Diluted earnings per share of $1.58 ($1.74 on an adjusted basis). - Operating cash flow of $863 million on a fiscal year to date basis ...