---
schema_version: "secwatch.filing_event.v1"
accession: "0001406666-21-000117"
form_type: "8-K"
ticker: "CALX"
cik: "0001406666"
company_name: "CALIX, INC"
filed_at: "2021-10-25T23:59:59+00:00"
generated_at: "2026-06-28T18:24:07.189680+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Calix Q3 revenue $172.2M record; non-GAAP EPS $0.35 beats guidance; Q4 rev outlook $170-176M

## Summary
- Revenue $172.2M, up 14% YoY; GAAP net income $177.4M includes $160.2M deferred tax asset valuation allowance reversal.
- Non-GAAP EPS $0.35 vs guidance $0.26-$0.30; non-GAAP gross margin 52.2% (record Q3).
- EXOS platform revenue up >190% YoY; AXOS up 29%; added 38 new BSP customers; cloud customers up 56%.
- Q4 guide: revenue $170-176M, non-GAAP gross margin 49-51%, non-GAAP EPS $0.20-$0.25; supply chain constraints noted.
- Free cash flow $7.5M (5th consecutive positive quarter); cash & investments $188.7M (record).

## SEC filing metadata
- accession: 0001406666-21-000117
- form_type: 8-K
- ticker: CALX
- cik: 0001406666
- company_name: CALIX, INC
- filed_at: 2021-10-25T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1406666/000140666621000117/0001406666-21-000117-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1406666/000140666621000117/calx-20211025.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001406666-21-000117
- JSON: https://secwatch.observer/filing/0001406666-21-000117.json
- Plain text: https://secwatch.observer/filing/0001406666-21-000117.txt

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