Littelfuse Inc /DE SEC filings LFUS
Littelfuse Inc /DE has 1,001 filings in SEC EDGAR's recent list, going back to May 1, 2018. Its latest annual report, Form ARS, was filed on Mar 12, 2026 for the period ended Dec 27, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 26, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (results of operations, regulation fd disclosure). The company's fiscal year ends on December 26.
| Form | Description | Filed | Period |
|---|---|---|---|
| SD | Specialized disclosure (conflict minerals) | May 28, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 28, 2025 | — |
| NT 10-K | Filing | Feb 27, 2025 | Dec 28, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 24, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 9, 2023 | — |
| CORRESP | Letter to the SEC | Nov 6, 2023 | — |
| UPLOAD | Letter from the SEC | Oct 30, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 25, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 27, 2022 | — |
| SD | Specialized disclosure (conflict minerals) | May 27, 2021 | — |
| UPLOAD | Letter from the SEC | Dec 4, 2020 | — |
| CORRESP | Letter to the SEC | Dec 2, 2020 | — |
| UPLOAD | Letter from the SEC | Nov 20, 2020 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| UPLOAD | Letter from the SEC | Aug 20, 2018 | — |
| CORRESP | Letter to the SEC | Aug 15, 2018 | — |
| UPLOAD | Letter from the SEC | Aug 7, 2018 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2018 | — |
Showing 19 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Switchgear & Switchboard Apparatus (SIC 3613)
- Listed as
- LFUS (Nasdaq)
- Fiscal year ends
- December 26
- Incorporated in
- DE
- Headquarters
- Rosemont, IL
- SEC filer status
- Large accelerated filer
- SEC CIK
- 889331
Other Switchgear & Switchboard Apparatus companies
- Powell Industries Inc POWL
- Abb Ltd ABBNY
Source: SEC EDGAR filings. This is company-reported data, not investment advice.