Company · RELL · CIK 355948

Richardson Electronics, Ltd. (RELL) SEC filings and CIK.

RELL’s SEC Central Index Key (CIK) is 0000355948, or 355948 without leading zeros. The SEC’s ticker file lists it as RICHARDSON ELECTRONICS, LTD..

Ticker: RELL
CIK: 0000355948
Other tickers: None
Insider transactions, Q3 2026: 46

Insider trading

In Q3 2026, insiders at Richardson Electronics, Ltd. reported 46 non-derivative transactions on 28 Forms 3, 4 and 5, including 0 open-market purchases and 13 sales. See every RELL 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.
Filed	Form	Accession
2026-10-30	4	0001193125-26-440960

Get RELL SEC data through the API

Filing history

curl "https://sec-api.dev/api/v1/filings?cik=355948&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Company profile

curl "https://sec-api.dev/api/v1/companies/355948" \
  -H "Authorization: Bearer $SEC_API_KEY"

Reported XBRL facts

curl "https://sec-api.dev/api/v1/facts/355948?taxonomy=us-gaap&concept=Revenues&limit=10" \
  -H "Authorization: Bearer $SEC_API_KEY"

Ticker to CIK API · SEC filings API · Richardson Electronics, Ltd. on SEC.gov

Questions

What is RELL’s CIK number?

RELL’s SEC Central Index Key (CIK) is 0000355948, or 355948 without leading zeros. The SEC’s ticker file lists it as RICHARDSON ELECTRONICS, LTD..

How do I find Richardson Electronics, Ltd.’s 10-K?

Request /api/v1/filings?cik=355948&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/rell.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.