---
schema_version: "secwatch.filing_event.v1"
accession: "0001406666-24-000010"
form_type: "8-K/A"
ticker: "CALX"
cik: "0001406666"
company_name: "CALIX, INC"
filed_at: "2024-02-23T23:59:59+00:00"
generated_at: "2026-06-05T16:52:29.557842+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Calix Q4 non-GAAP EPS $0.43 beat; records $3.2M litigation charge, Q1 guide $225-231M

## Summary
- Record Q4 revenue $264.7M, non-GAAP gross margin 54.1% (record), non-GAAP EPS $0.43 vs guidance $0.33-$0.39.
- GAAP net loss $6.6M ($0.10 loss) due to $28.7M legacy inventory writedown and $3.2M litigation settlement.
- Repurchased $44M stock in Q4; Board authorized additional $100M for share repurchase program.
- Q1 2024 guidance: revenue $225-231M, non-GAAP gross margin 54.5-55.5%, non-GAAP EPS $0.24-$0.30.
- Expect 2024 appliance slowdown, platform/cloud/mgd services growth; strong growth from 2025 on government funds.

## SEC filing metadata
- accession: 0001406666-24-000010
- form_type: 8-K/A
- ticker: CALX
- cik: 0001406666
- company_name: CALIX, INC
- filed_at: 2024-02-23T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- 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/1406666/000140666624000010/0001406666-24-000010-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1406666/000140666624000010/calx-20240129.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001406666-24-000010
- JSON: https://secwatch.observer/filing/0001406666-24-000010.json
- Plain text: https://secwatch.observer/filing/0001406666-24-000010.txt

## Key facts
- Earnings Releases
  CALIX, INC reported financial results for the fourth quarter of 2023.
  - Period: the fourth quarter of 2023
  - Result: reported results
  source text: Calix previously furnished its fourth quarter and annual results for 2023 on January 29, 2024 via its stockholder letter. The impact of recording the litigation settlement on its fourth quarter of 2023 results was to increase GAAP general and administrative operating expenses by $3.2 million, the GAAP net loss by $2.5 million and the GAAP net loss per common share by $0.04. The stockholder letter has been updated to reflect these changes.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1406666/000140666624000010/0001406666-24-000010-index.htm

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