---
schema_version: "secwatch.filing_event.v1"
accession: "0001514416-21-000280"
form_type: "8-K"
ticker: "BAND"
cik: "0001514416"
company_name: "Bandwidth Inc."
filed_at: "2021-10-27T23:59:59+00:00"
generated_at: "2026-06-28T17:26:27.401073+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Bandwidth Q3 preliminary revenue beats guidance at ~$131M; DDoS attack may cut FY CPaaS by $9M-$12M

## Summary
- Preliminary Q3 consolidated revenue ~$131M (+54% YoY), above guidance of $123.6M-$124.6M.
- Q3 CPaaS revenue ~$107.4M (+46% YoY), above guidance $106.1M-$107.1M.
- DDoS attack reduced Q3 revenue by ~$0.7M; full year CPaaS impact estimated $9M-$12M.
- Company will adjust full year 2021 outlook downward due to lost volume from attack.

## SEC filing metadata
- accession: 0001514416-21-000280
- form_type: 8-K
- ticker: BAND
- cik: 0001514416
- company_name: Bandwidth Inc.
- filed_at: 2021-10-27T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1514416/000151441621000280/0001514416-21-000280-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1514416/000151441621000280/band-20211026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001514416-21-000280
- JSON: https://secwatch.observer/filing/0001514416-21-000280.json
- Plain text: https://secwatch.observer/filing/0001514416-21-000280.txt

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