Welcome to our dedicated page for Littelfuse SEC filings (Ticker: LFUS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Littelfuse Inc (NASDAQ: LFUS) SEC filings page on Stock Titan brings together the company’s regulatory disclosures, helping investors review how this diversified industrial technology manufacturer reports its performance and material events. Littelfuse files annual reports on Form 10-K, quarterly updates on Form 10-Q, and current reports on Form 8-K, along with other required documents.
Recent Form 8-K filings illustrate how the company uses these reports to communicate important information. Littelfuse has filed 8-Ks to furnish quarterly earnings press releases, including segment-level data for its Electronics, Transportation, and Industrial businesses, as well as non-GAAP metrics such as organic net sales growth, adjusted operating income, adjusted EBITDA, and free cash flow. These filings also reference slide presentations and investor materials hosted on the company’s investor relations site.
Other 8-Ks document corporate actions and governance events. For example, Littelfuse filed an 8-K describing its entry into a membership interest purchase agreement to acquire Basler Electric Company, outlining key terms, conditions, and risk factors related to the transaction. Another 8-K reports on executive leadership changes within the Semiconductor Business of the Electronics segment.
On this page, users can access Littelfuse’s 10-K and 10-Q filings for detailed financial statements, risk factor discussions, and segment disclosures, as well as 8-Ks covering acquisitions, earnings releases, and leadership updates. Stock Titan’s AI-powered tools summarize lengthy filings, highlight important sections, and make it easier to interpret complex topics such as non-GAAP reconciliations, transaction agreements, and compensation-related disclosures. Investors can also review insider and governance-related filings, where available, to better understand the company’s corporate actions and reporting history.
Littelfuse senior vice president and chief accounting officer Jeffrey G. Gorski reported multiple stock option exercises and share sales. On February 5–6, 2026, he exercised 6,000 stock options at an exercise price of
Littelfuse director William P. Noglows reported an option exercise and updated share holdings. On February 4, 2026, a stock option for 911 shares of Littelfuse common stock was exercised at an exercise price of $199.24 per share, converting the option into common shares.
Following this transaction, Noglows beneficially owns 21,685 shares of Littelfuse common stock directly. In addition, 2,500 shares are held in a trust for the benefit of his son and another 2,500 shares are held in a trust for the benefit of his daughter, reported as indirect ownership. The option position for 911 shares is now shown as fully exercised with no remaining derivative securities of that grant.
Littelfuse senior vice president and chief human resources officer Maggie Chu reported an insider transaction involving company common stock. On February 4, 2026, she exercised a stock option for 2,061 shares of common stock at an exercise price of $262.75 per share and acquired those shares directly. That same day, she sold 2,061 shares of common stock in market transactions at a weighted average price of $326.71 per share, with individual sale prices ranging from $326.68 to $327.40. After these transactions, Chu directly held 6,719 common shares of Littelfuse.
Littelfuse senior vice president Kim Peter Sung-Jip reported exercising employee stock options and selling shares of the company’s common stock. On February 2, 2026, he exercised options for 5,488 shares at an exercise price of
On the same day, he sold a total of 5,488 common shares in several market transactions at weighted average prices ranging from about
Littelfuse executive Stafford Ryan K, Executive VP, CLO & Corporate Secretary, exercised stock options for 16,839 shares of common stock at $132.08 per share on 02/02/2026. On the same day, he sold 16,839 shares in several market transactions at prices around $325–$327 per share.
After these transactions, he continued to directly own 28,591 shares of Littelfuse common stock. The option for 16,839 shares had vested in three equal annual installments beginning one year after its April 23, 2020 grant date.
Littelfuse SVP & GM Electronics Business Deepak Nayar reported a series of stock option exercises and share sales in company common stock. On February 2, 2026, he exercised options for 4,300 shares at $267.84 and 4,575 shares at $240.76, receiving an equal number of common shares.
That same day, he sold a total of 8,875 shares of Littelfuse common stock in multiple transactions, at weighted average prices ranging from about $320 to $325.50, as detailed in several price-range footnotes. After these transactions, he directly owned 6,009 shares of Littelfuse common stock.
Littelfuse senior vice president David Ruppel reported an option exercise and same-day share sales. On February 2, 2026, he exercised 1,113 stock options for Littelfuse common stock at $251.82 per share, increasing his directly held common shares.
That same day, he sold 1,113 shares at $320.78 per share and an additional 382 shares at $322.31 per share. After these transactions, he directly owned 4,965 shares of common stock and 2,224 stock options, with the option grant for 3,337 shares vesting in thirds annually starting one year after the August 14, 2024 grant date.
LFUS has a Rule 144 notice for a planned sale of 2,061 common shares, with an aggregate market value of $673,356.23. The shares are to be sold through Merrill on the NASDAQ around 02/04/2026, with 24,901,687 shares outstanding. The seller acquired these shares on 06/01/2021 via a stock option exercise from Littlefuse and is paying in cash dated 02/04/2026.
A holder of Littelfuse, Inc. common stock filed a notice to sell 1,495 shares under Rule 144. The planned sale, through Merrill in Columbus, Ohio, has an aggregate market value of $480,160.82 and is targeted around 02/02/2026 on the NASDAQ exchange.
The securities to be sold were acquired from Littelfuse via a stock option exercise on 08/14/2024 for 1,113 shares, paid in cash, and a restricted stock vest on 08/14/2025 for 382 shares. Littelfuse had 24,901,687 common shares outstanding, providing context for the transaction size.
Peter Kim has filed a Form 144 to sell 5,488 shares of Littlefuse common stock. The shares are to be sold through Merrill in Columbus, Ohio, on or about 02/02/2026 on the NASDAQ, with an aggregate market value of $1,791,013.41 and 24,901,687 shares outstanding.
The shares were acquired on 07/10/2020 via a stock option exercise from Littlefuse and are to be paid for in cash. In the past three months, Peter Kim also sold 2,049 common shares on 12/11/2025 for gross proceeds of $553,284.68. By signing the notice, he represents that he knows no undisclosed material adverse information about Littlefuse.
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