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LITTELFUSE INC /DE — Investor Relations & Filings

Ticker · LFUS ISIN · US5370081045 LEI · 549300MY7HLQFYTPCX75 US Manufacturing
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Filings indexed 1,888 across all filing types
Latest filing 2026-05-28 Regulatory Filings
Country US United States of America
Listing US LFUS

About LITTELFUSE INC /DE

https://www.littelfuse.com/

Littelfuse Inc. is an industrial technology manufacturing company specializing in circuit protection, power control, and sensing solutions. Its product portfolio includes fuses, semiconductors (such as TVS diodes, MOSFETs, and IGBTs), relays, switches, and sensors. The company's components are utilized in a wide range of applications across various markets, including automotive, particularly electric vehicle systems like onboard chargers and battery management. Other key markets served are industrial automation, power conversion, telecommunications, and data center infrastructure. The company focuses on developing technologies for a sustainable, connected, and safer world.

Recent filings

Filing Released Lang Actions
SD
Regulatory Filings Classification · 92% confidence The document is clearly an SEC Form SD (“Specialized Disclosure Report”) filed under Rule 13p-1 to disclose conflict minerals information. It is a specialized regulatory compliance filing, not an AGM presentation, earnings release, annual or quarterly report, or any of the other narrowly defined categories. There is no specific category for Form SD in the taxonomy, so this falls under the general regulatory filings category (RNS).
2026-05-28 English
8-K
Investor Presentation Classification · 85% confidence The document is a Form 8-K “Current Report” filed under the Exchange Act. Item 7.01 discloses that Exhibit 99.1 is an “Investor Presentation” dated May 14, 2026, furnished pursuant to Regulation FD. Although the presentation itself is not included in the text (the report is under 5,000 characters and notes an exhibit attachment), the core subject of the filing is the disclosure of an investor presentation deck. According to the taxonomy, filings furnishing investor presentation materials should be classified as Investor Presentation (IP).
2026-05-14 English
10-Q - LITTELFUSE INC /DE (0000889331) (Filer)
Interim / Quarterly Report Q1 2026
2026-05-06 English
8-K - LITTELFUSE INC /DE (0000889331) (Filer)
Report Publication Announcement Classification · 85% confidence The document is a Form 8-K filing that reports the issuance of a press release (earnings release) and an investor presentation and indicates they’re attached as exhibits and available on the company’s website. It does not itself contain financial statements or substantive data, but rather announces the publication of those materials. This matches the “Report Publication Announcement (RPA)” definition: an announcement regarding the release or publication of company reports or materials. It is not the full report or the press release text itself, nor does it provide detailed financials, so it should be classified as an RPA.
2026-05-06 English
Major Shareholding Notification 2026
Major Shareholding Notification
2026-04-30 English
Major Shareholding Notification 2026
Major Shareholding Notification
2026-04-29 English

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