---
schema_version: "secwatch.filing_event.v1"
accession: "0001406666-25-000001"
form_type: "8-K"
ticker: "CALX"
cik: "0001406666"
company_name: "CALIX, INC"
filed_at: "2025-01-29T23:59:59+00:00"
generated_at: "2026-05-27T06:40:49.466090+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Calix Q4 revenue $206.1M, GAAP loss $0.27, non-GAAP EPS $0.08; record gross margin 55.0%

## Summary
- Q4 revenue $206.1M, +2.6% sequentially but -22% YoY; GAAP net loss $0.27 per diluted share, non-GAAP EPS $0.08.
- Record GAAP gross margin 55.0% (non-GAAP 55.5%), up 1,220 bps YoY due to product mix and prior-year charges.
- Remaining performance obligations (RPOs) $325.8M, +34% YoY and +10% sequentially; current RPO $120.7M, +27% YoY.
- Q1 2025 guidance: revenue $204-210M, non-GAAP gross margin 54.5-56.5%, non-GAAP EPS $0.10-0.16.
- Cash & investments $297.1M (record); non-GAAP free cash flow $50.3M in 2024; DSO 36 days.

## SEC filing metadata
- accession: 0001406666-25-000001
- form_type: 8-K
- ticker: CALX
- cik: 0001406666
- company_name: CALIX, INC
- filed_at: 2025-01-29T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1406666/000140666625000001/0001406666-25-000001-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1406666/000140666625000001/calx-20250129.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001406666-25-000001
- JSON: https://secwatch.observer/filing/0001406666-25-000001.json
- Plain text: https://secwatch.observer/filing/0001406666-25-000001.txt

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