---
schema_version: "secwatch.filing_event.v1"
accession: "0000917273-25-000072"
form_type: "8-K"
ticker: "RMBS"
cik: "0000917273"
company_name: "RAMBUS INC"
filed_at: "2025-04-28T23:59:59+00:00"
generated_at: "2026-05-23T05:33:57.215240+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Rambus beats Q1 expectations: revenue $166.7M, product revenue $76.3M record, EPS $0.56

## Summary
- GAAP revenue $166.7M ($117.9M YoY); product revenue record $76.3M, up 52% YoY; licensing billings $73.3M.
- GAAP diluted EPS $0.56 vs $0.30 YoY; net income $60.3M vs $32.9M.
- Operating cash flow $77.4M vs $39.1M; cash and securities $514.4M.
- Q2 guidance: product revenue $77-83M, licensing billings $64-70M, GAAP op costs $106-110M.
- CEO cites strong start, market leadership in DDR5 chips, and record product revenue.

## SEC filing metadata
- accession: 0000917273-25-000072
- form_type: 8-K
- ticker: RMBS
- cik: 0000917273
- company_name: RAMBUS INC
- filed_at: 2025-04-28T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- 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/917273/000091727325000072/0000917273-25-000072-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/917273/000091727325000072/rmbs-20250428.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000917273-25-000072
- JSON: https://secwatch.observer/filing/0000917273-25-000072.json
- Plain text: https://secwatch.observer/filing/0000917273-25-000072.txt

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