---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-322486"
form_type: "8-K"
ticker: "AMBA"
cik: "0001280263"
company_name: "AMBARELLA INC"
filed_at: "2021-11-08T23:59:59+00:00"
generated_at: "2026-06-28T11:18:24.005877+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Ambarella completes $307.5M acquisition of Oculii; expands into radar perception

## Summary
- Closed November 5, 2021; Oculii becomes wholly owned subsidiary of Ambarella.
- Total consideration ~$307.5M cash, subject to customary adjustments.
- Oculii CEO Steven Hong named Ambarella VP & GM, Radar; CTO Lang Hong becomes Fellow.
- Oculii's adaptive AI radar software enables up to 100X resolution, longer range, greater accuracy.
- Combines Ambarella camera tech with Oculii radar for all-weather, low-cost autonomous perception.

## SEC filing metadata
- accession: 0001193125-21-322486
- form_type: 8-K
- ticker: AMBA
- cik: 0001280263
- company_name: AMBARELLA INC
- filed_at: 2021-11-08T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280263/000119312521322486/0001193125-21-322486-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280263/000119312521322486/d255618d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-322486
- JSON: https://secwatch.observer/filing/0001193125-21-322486.json
- Plain text: https://secwatch.observer/filing/0001193125-21-322486.txt

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