---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-21-024930"
form_type: "8-K"
ticker: "BLZE"
cik: "0001462056"
company_name: "Backblaze, Inc."
filed_at: "2021-12-13T23:59:59+00:00"
generated_at: "2026-06-28T01:39:21.654481+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Backblaze Q3 revenue up 25% to $17.3M; net loss widens to $6.0M

## Summary
- B2 Cloud Storage revenue surged 59% YoY to $6.0M; Computer Backup up 13% to $11.2M.
- Net loss per share $(0.32) vs $(0.10) in Q3 2020; adjusted EBITDA margin fell to 5% from 20%.
- ARR grew 28% YoY to $70.8M; B2 Cloud Storage ARR rose 58% to $24.6M.
- Q4 guidance: revenue $17.7M-$18.2M; adjusted EBITDA margin between -10% and -6%.
- IPO in November 2021 added ~$103M net cash proceeds, not in balance sheet as of Sep 30.

## SEC filing metadata
- accession: 0001628280-21-024930
- form_type: 8-K
- ticker: BLZE
- cik: 0001462056
- company_name: Backblaze, Inc.
- filed_at: 2021-12-13T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1462056/000162828021024930/0001628280-21-024930-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1462056/000162828021024930/blze-20211213.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-21-024930
- JSON: https://secwatch.observer/filing/0001628280-21-024930.json
- Plain text: https://secwatch.observer/filing/0001628280-21-024930.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.