---
schema_version: "secwatch.filing_event.v1"
accession: "0001595974-21-000048"
form_type: "8-K/A"
ticker: "MGNI"
cik: "0001595974"
company_name: "MAGNITE, INC."
filed_at: "2021-07-16T23:59:59+00:00"
generated_at: "2026-06-30T04:49:41.733367+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Magnite completes SpotX acquisition for ~$1.2B; pro forma 2020 net loss $139M on $407M revenue

## Summary
- Total purchase price ~$1.2B: $640M cash + 12,374,315 shares of MGNI common stock.
- Financed via $400M 0.25% convertible senior notes due 2026 and $360M term loan (net $325M).
- Pro forma combined 2020 revenue $407M, operating loss $154M, net loss $139M.
- Goodwill of $816M and intangible assets of $431M recorded from acquisition accounting.
- Working capital estimate of ~$65.5M added to purchase price; final adjustments pending.

## SEC filing metadata
- accession: 0001595974-21-000048
- form_type: 8-K/A
- ticker: MGNI
- cik: 0001595974
- company_name: MAGNITE, INC.
- filed_at: 2021-07-16T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1595974/000159597421000048/0001595974-21-000048-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1595974/000159597421000048/mgni-20210430.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001595974-21-000048
- JSON: https://secwatch.observer/filing/0001595974-21-000048.json
- Plain text: https://secwatch.observer/filing/0001595974-21-000048.txt

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