Littelfuse Inc (LFUS) stock
LFUSNasdaqSwitchgear & Switchboard ApparatusFiscal year ends December 26
Financials through Q3 FY2026, quarter ended Sep 26, 2026Last filing: 10-Q on Oct 28, 2026Score 13/30177% above fair value
$396.61−1.09 (-0.27%)
Close on Nov 12, 2026Market cap $10.08BP/E 404.7Yield 0.73%
Littelfuse r&d expenses
Research and development expenses are spending on new products and technology.
Littelfuse's R&D Expenses for the twelve months ending Sep 26, 2026 was $117.61M, up 10.7% year over year. For fiscal 2025 it was $106.90M, down 0.8% from the year before. Over ten years it grew 13.3% a year on average. The highest annual figure on record is $107.77M in fiscal 2024.
Annual r&d expenses
| Period | Period end | Value | Change |
|---|---|---|---|
| FY2025 | Dec 27, 2025 | $106.90M | -0.8% |
| FY2024 | Dec 28, 2024 | $107.77M | +5.2% |
| FY2023 | Dec 30, 2023 | $102.43M | +7.1% |
| FY2022 | Dec 31, 2022 | $95.60M | +45.0% |
| FY2021 | Jan 1, 2022 | $65.94M | +25.5% |
| FY2020 | Dec 26, 2020 | $52.54M | -34.3% |
| FY2019 | Dec 28, 2019 | $80.00M | -8.3% |
| FY2018 | Dec 29, 2018 | $87.26M | +72.8% |
| FY2017 | Dec 30, 2017 | $50.49M | +19.6% |
| FY2016 | Dec 31, 2016 | $42.20M | +37.0% |
| FY2015 | Jan 2, 2016 | $30.80M | -1.0% |
| FY2014 | Dec 27, 2014 | $31.12M | +27.5% |
| FY2013 | Dec 28, 2013 | $24.42M | +15.0% |
| FY2012 | Dec 29, 2012 | $21.23M | +9.2% |
| FY2011 | Dec 31, 2011 | $19.44M | +10.4% |
| FY2010 | Jan 1, 2011 | $17.60M | -2.9% |
| FY2009 | Jan 2, 2010 | $18.13M | – |
Quarterly r&d expenses
Change is against the same quarter a year earlier.
| Period | Period end | Value | Change |
|---|---|---|---|
| Q3 FY2026 | Sep 26, 2026 | $29.72M | +8.7% |
| Q2 FY2026 | Jun 27, 2026 | $31.04M | +17.6% |
| Q1 FY2026 | Mar 28, 2026 | $29.74M | +14.2% |
| Q4 FY2025 | Dec 27, 2025 | $27.12M | +2.4% |
| Q3 FY2025 | Sep 27, 2025 | $27.33M | +3.3% |
| Q2 FY2025 | Jun 28, 2025 | $26.40M | -2.7% |
| Q1 FY2025 | Mar 29, 2025 | $26.05M | -5.9% |
| Q4 FY2024 | Dec 28, 2024 | $26.49M | +5.3% |
| Q3 FY2024 | Sep 28, 2024 | $26.47M | +3.9% |
| Q2 FY2024 | Jun 29, 2024 | $27.15M | +10.8% |
| Q1 FY2024 | Mar 30, 2024 | $27.67M | +1.4% |
| Q4 FY2023 | Dec 30, 2023 | $25.16M | -6.1% |
| Q3 FY2023 | Sep 30, 2023 | $25.48M | -1.0% |
| Q2 FY2023 | Jul 1, 2023 | $24.50M | +4.3% |
| Q1 FY2023 | Apr 1, 2023 | $27.29M | +39.5% |
| Q4 FY2022 | Dec 31, 2022 | $26.81M | +40.9% |
| Q3 FY2022 | Oct 1, 2022 | $25.75M | +63.2% |
| Q2 FY2022 | Jul 2, 2022 | $23.49M | +43.3% |
| Q1 FY2022 | Apr 2, 2022 | $19.56M | +32.7% |
| Q4 FY2021 | Jan 1, 2022 | $19.03M | +59.2% |
| Q3 FY2021 | Sep 25, 2021 | $15.78M | +21.7% |
| Q2 FY2021 | Jun 26, 2021 | $16.39M | +24.6% |
| Q1 FY2021 | Mar 27, 2021 | $14.74M | +1.9% |
| Q4 FY2020 | Dec 26, 2020 | $11.95M | -31.3% |
| Q3 FY2020 | Sep 26, 2020 | $12.96M | -34.3% |
| Q2 FY2020 | Jun 27, 2020 | $13.16M | -38.7% |
| Q1 FY2020 | Mar 28, 2020 | $14.46M | -32.4% |
| Q4 FY2019 | Dec 28, 2019 | $17.40M | -19.1% |
| Q3 FY2019 | Sep 28, 2019 | $19.73M | -3.5% |
| Q2 FY2019 | Jun 29, 2019 | $21.46M | -5.7% |
| Q1 FY2019 | Mar 30, 2019 | $21.41M | -5.0% |
| Q4 FY2018 | Dec 29, 2018 | $21.52M | +58.1% |
| Q3 FY2018 | Sep 29, 2018 | $20.45M | +70.6% |
| Q2 FY2018 | Jun 30, 2018 | $22.75M | +78.7% |
| Q1 FY2018 | Mar 31, 2018 | $22.54M | +85.5% |
| Q4 FY2017 | Dec 30, 2017 | $13.62M | +20.4% |
| Q3 FY2017 | Sep 30, 2017 | $11.99M | – |
| Q2 FY2017 | Jul 1, 2017 | $12.73M | – |
| Q1 FY2017 | Apr 1, 2017 | $12.15M | – |
| Q4 FY2016 | Dec 31, 2016 | $11.31M | – |
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