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.
Littelfuse Inc. filings document operating results, governance matters, financing arrangements, and executive compensation for a Delaware public company focused on electrical energy transfer and circuit protection products. Form 8-K reports include quarterly and annual results furnished with investor presentations, Regulation FD materials, material definitive agreements, and leadership or board changes.
Proxy materials describe annual meeting proposals, director elections, advisory executive-compensation votes, auditor ratification, board committee matters, and related governance disclosures. Other filings cover the company's senior unsecured revolving credit facility, long-term incentive plan award agreements, executive separation arrangements, and capital-structure matters tied to working capital, capital expenditures, acquisitions, and general corporate purposes.
A Rule 144 notice has been filed for the planned sale of 5,000 shares of common stock through Merrill Lynch on the NASDAQ, with an aggregate market value of 1,731,156. The filing lists total common shares outstanding as 24,901,687.
The shares to be sold were acquired over several years mainly through vesting of restricted stock units (RSUs) and stock option exercises, with consideration described as compensation or cash. The seller represents that they do not know any undisclosed material adverse information about the issuer’s current or prospective operations.
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 $166.63 per share and sold 6,000 common shares at sale prices generally in the low to mid-$300s, including weighted average prices referenced between $328.64 and $347.23. After these transactions, he directly holds 6,433 shares of Littelfuse common stock and 689 remaining stock options on the same grant.
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 $166.63 per share.
On the same day, he sold a total of 5,488 common shares in several market transactions at weighted average prices ranging from about $325.44 to $328.14 per share, as detailed in the price ranges in the footnotes. After these transactions, he directly owned 10,175 Littelfuse shares.
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.