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Company · LFUS · CIK 889331

Littelfuse Inc /De (LFUS) SEC filings and CIK.

LFUS’s SEC Central Index Key (CIK) is 0000889331, or 889331 without leading zeros. The SEC’s ticker file lists it as LITTELFUSE INC /DE.

Ticker
LFUS
CIK
0000889331
Other tickers
None
Insider transactions, Q3 2026
25

Insider trading

In Q3 2026, insiders at Littelfuse Inc /De reported 25 non-derivative transactions on 22 Forms 3, 4 and 5, including 0 open-market purchases and 0 sales. See every LFUS 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
2026-10-3040002115144-26-000014
2026-10-3040002055015-26-000019

Get LFUS SEC data through the API

Filing history
curl "https://sec-api.dev/api/v1/filings?cik=889331&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"
Company profile
curl "https://sec-api.dev/api/v1/companies/889331" \
  -H "Authorization: Bearer $SEC_API_KEY"
Reported XBRL facts
curl "https://sec-api.dev/api/v1/facts/889331?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Littelfuse Inc /De on SEC.gov

Questions

What is LFUS’s CIK number?

LFUS’s SEC Central Index Key (CIK) is 0000889331, or 889331 without leading zeros. The SEC’s ticker file lists it as LITTELFUSE INC /DE.

How do I find Littelfuse Inc /De’s 10-K?

Request /api/v1/filings?cik=889331&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/lfus.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.