Exhibit 99.1 Backblaze Announces First Quarter 2026 Financial Results 24% Revenue Growth in B2 Cloud Storage, 12% Revenue Growth Overall in Q1 2026 San Francisco, CA (May 4, 2026)—Backblaze, Inc. (Nasdaq: BLZE), the high-performance cloud storage platform for the AI era, today announced results for its first quarter ended March 31, 2026. "In Q1, we exceeded the top end of our revenue and Adjusted EBITDA guidance, with B2 growing 24% year over year," said Gleb Budman, co-founder and CEO of Backblaze. "We are ...