Exhibit 99.1 Columbia Sportswear Company Reports First Quarter 2024 Financial Results; Updates Full Year 2024 Financial Outlook First Quarter 2024 Highlights • Net sales decreased 6 percent to $770.0 million, compared to first quarter 2023. • Operating income decreased 21 percent to$44.7 million, or 5.8 percent of net sales, compared to first quarter 2023 operating income of $56.4 million, or 6.9 percent of net sales. • Diluted earnings per share decreased 4 percent to$0.71, compared to first quarter 2023 ...