Mastec Inc (MTZ) SEC filings and CIK.
MTZ’s SEC Central Index Key (CIK) is 0000015615, or 15615 without leading zeros. The SEC’s ticker file lists it as MASTEC INC.
- Ticker
- MTZ
- CIK
- 0000015615
- Other tickers
- None
- Insider transactions, Q3 2026
- 12
Insider trading
In Q3 2026, insiders at Mastec Inc reported 12 non-derivative transactions on 12 Forms 3, 4 and 5, including 0 open-market purchases and 0 sales. See every MTZ insider transaction →
Recent filings we observed
No filings for this CIK appear in our current observation window. The full history is available from the filings endpoint below and on SEC.gov.
Form D offerings
| Filed | Type | Amount sold | Industry |
|---|---|---|---|
| 2026-07-24 | D | $484.4M | Other |
Get MTZ SEC data through the API
curl "https://sec-api.dev/api/v1/filings?cik=15615&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/companies/15615" \
-H "Authorization: Bearer $SEC_API_KEY"curl "https://sec-api.dev/api/v1/facts/15615?taxonomy=us-gaap&concept=Revenues&limit=10" \
-H "Authorization: Bearer $SEC_API_KEY"Ticker to CIK API · SEC filings API · Mastec Inc on SEC.gov
Questions
What is MTZ’s CIK number?
MTZ’s SEC Central Index Key (CIK) is 0000015615, or 15615 without leading zeros. The SEC’s ticker file lists it as MASTEC INC.
How do I find Mastec Inc’s 10-K?
Request /api/v1/filings?cik=15615&form=10-K, or open the company’s EDGAR page and filter by 10-K. Foreign issuers file 20-F or 40-F instead.
Plain-text version for agents and LLMs: /companies/mtz.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.