---
schema_version: "secwatch.filing_event.v1"
accession: "0001595974-21-000042"
form_type: "8-K"
ticker: "MGNI"
cik: "0001595974"
company_name: "MAGNITE, INC."
filed_at: "2021-07-01T23:59:59+00:00"
generated_at: "2026-06-30T08:01:51.365300+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Magnite acquires SpringServe for ~$31M to strengthen CTV ad serving

## Summary
- Purchase price of approx. $31M net of prior $2M investment; closed July 1, 2021.
- SpringServe provides CTV ad serving for publishers like Pluto TV, Sinclair, Univision, VIZIO.
- Technology enables tighter integration between direct and programmatic inventory.
- SpringServe CEO Joseph Hirsch will report to Magnite's CRO for CTV.
- Acquisition structured via previously negotiated option from SpotX deal.

## SEC filing metadata
- accession: 0001595974-21-000042
- form_type: 8-K
- ticker: MGNI
- cik: 0001595974
- company_name: MAGNITE, INC.
- filed_at: 2021-07-01T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1595974/000159597421000042/0001595974-21-000042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1595974/000159597421000042/mgni-20210701.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001595974-21-000042
- JSON: https://secwatch.observer/filing/0001595974-21-000042.json
- Plain text: https://secwatch.observer/filing/0001595974-21-000042.txt

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