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Company · MGNI · CIK 1595974

Magnite, Inc. (MGNI) SEC filings and CIK.

MGNI’s SEC Central Index Key (CIK) is 0001595974, or 1595974 without leading zeros. The SEC’s ticker file lists it as MAGNITE, INC..

Ticker
MGNI
CIK
0001595974
Other tickers
None
Insider transactions, Q3 2026
48

Insider trading

In Q3 2026, insiders at Magnite, Inc. reported 48 non-derivative transactions on 33 Forms 3, 4 and 5, including 0 open-market purchases and 33 sales. See every MGNI insider transaction →

Recent filings we observed

From our record of EDGAR’s latest-filings feed and sampled daily indexes. Not a complete filing history; use the filings API for that.
FiledFormAccession
2026-11-0640001865116-26-000011
2026-11-0640001966857-26-000017

Get MGNI SEC data through the API

Filing history
curl "https://sec-api.dev/api/v1/filings?cik=1595974&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"
Company profile
curl "https://sec-api.dev/api/v1/companies/1595974" \
  -H "Authorization: Bearer $SEC_API_KEY"
Reported XBRL facts
curl "https://sec-api.dev/api/v1/facts/1595974?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Magnite, Inc. on SEC.gov

Questions

What is MGNI’s CIK number?

MGNI’s SEC Central Index Key (CIK) is 0001595974, or 1595974 without leading zeros. The SEC’s ticker file lists it as MAGNITE, INC..

How do I find Magnite, Inc.’s 10-K?

Request /api/v1/filings?cik=1595974&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.

Ticker and CIK: SEC company_tickers.json, cached 2026-11-02. Tickers can move between entities; the CIK identifies the filer.

Plain-text version for agents and LLMs: /companies/mgni.md

Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.