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LITTELFUSE INC /DE

LFUS · Switchgear & Switchboard Apparatus · 25.3M shares · +0%/yr ↑ shares · EDGAR filings ↗

Reference price $483.26 · est. market cap ~$12.2B — last insider sale, 2026-06-18 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)

Grade

B71

Diversified, scaled industrial-technology franchise with strong cash flow and a clean balance sheet, masked by a one-off loss year.

Strengths

Risks

Notable findings

Quarterly revenue

2014-12-27 · $207M2015-09-26 · $216M2016-10-01 · $280M2017-12-30 · $305M

Last 4 quarters · from SEC filings.

Key metrics

Return on equity
-3.0%
Return on assets
-1.8%
ROIC
0.9%
Revenue growth (QoQ)
8.7%
Net-income growth
-171.6%
Debt / equity
0.3×
Current ratio
2.7×
Free cash flow
$366M
Tangible book value
$620M
Cash & investments
$584M

Insider transactions · last 18 months

DateInsiderTypeSharesPrice
2026-06-18Gorski Jeffrey GSell247$483.26
2026-06-18Khandelwal AbhishekTax withheld1.1K$479.82
2026-06-18Gorski Jeffrey GSell1.1K$482.31
2026-06-18Gorski Jeffrey GOption exercise689$166.63
2026-06-15HUNTER GORDONOption exercise1.4K$132.08
2026-06-15HUNTER GORDONSell1.4K$480.00
2026-06-11GRILLO ANTHONYSell2.5K$451.93
2026-06-11GRILLO ANTHONYSell209$454.07
2026-06-11GRILLO ANTHONYSell35$449.76
2026-06-11GRILLO ANTHONYSell256$450.66
2026-06-11GRILLO ANTHONYSell38$452.75
2026-06-04GREEN MARIA CGrant3$480.24
2026-06-04CHUNG T JGrant10$480.24
2026-06-04CHUNG T JGrant3$480.24
2026-06-04NOGLOWS WILLIAM PGrant3$480.24
2026-06-04NOGLOWS WILLIAM PGrant3$480.24
2026-06-04HUNTER GORDONGrant4$480.24
2026-06-04HUNTER GORDONGrant3$480.24
2026-06-04GRILLO ANTHONYGrant35$480.24
2026-06-04GRILLO ANTHONYGrant3$480.24
2026-06-04Kim Peter Sung-JipGrant5$480.24
2026-06-04PAEPER HOLLY BethGrant1$480.24
2026-06-04Hamed Karim WagdyGrant4$480.24
2026-06-04Ruppel DavidGrant5$480.24
2026-06-04Chu MaggieGrant6$480.24
2026-06-04Khandelwal AbhishekGrant16$480.24
2026-06-04D'Angelo Anne-Marie WGrant3$480.24
2026-06-04Gorski Jeffrey GGrant1$480.24
2026-06-04Cerniglia Kristina A.Grant3$480.24
2026-06-04Henderson Gregory N.Grant31$480.24
2026-06-04Nayar DeepakGrant9$480.24
2026-06-03HUNTER GORDONSell603$488.31
2026-06-02Kim Peter Sung-JipOption exercise1.4K$267.84
2026-06-02Kim Peter Sung-JipOption exercise2.5K$231.64
2026-06-02Kim Peter Sung-JipOption exercise3.3K$240.76
2026-06-02Kim Peter Sung-JipOption exercise3.0K$230.39
2026-06-02Kim Peter Sung-JipSell10K$486.18
2026-06-02Kim Peter Sung-JipSell81$484.90
2026-05-20Chu MaggieOption exercise4.0K$231.64
2026-05-20Chu MaggieOption exercise4.3K$240.76
2026-05-20Chu MaggieOption exercise3.1K$230.39
2026-05-20Chu MaggieSell8.9K$435.22
2026-05-20Chu MaggieSell2.4K$436.38
2026-05-20Chu MaggieSell63$437.37
2026-05-18Nayar DeepakOption exercise2.3K$240.76
2026-05-18Ruppel DavidSell506$445.16
2026-05-18Nayar DeepakOption exercise2.3K$230.39
2026-05-18Nayar DeepakSell2.3K$446.78
2026-05-18Nayar DeepakSell2.3K$446.78
2026-05-18Nayar DeepakSell1.3K$446.78
2026-05-15Henderson Gregory N.Tax withheld27$446.11
2026-05-01D'Angelo Anne-Marie WGrant1.7K
2026-04-30PAEPER HOLLY BethGrant81$404.17
2026-04-30Chu MaggieSell282$396.90
2026-04-28Chu MaggieSell317$392.47
2026-04-28Chu MaggieSell498$392.47
2026-04-27Chu MaggieTax withheld183$403.02
2026-04-27Stafford Ryan KTax withheld399$403.02
2026-04-27Nayar DeepakTax withheld397$403.02
2026-04-27Gorski Jeffrey GTax withheld175$403.02
2026-04-27Kim Peter Sung-JipTax withheld158$403.02
2026-04-25Kim Peter Sung-JipTax withheld229$407.14
2026-04-25Chu MaggieTax withheld206$407.14
2026-04-25Gorski Jeffrey GTax withheld205$407.14
2026-04-25Henderson Gregory N.Tax withheld31$407.14
2026-04-25Nayar DeepakTax withheld423$407.14
2026-04-25Stafford Ryan KTax withheld455$407.14
2026-04-24Henderson Gregory N.Tax withheld1.7K$407.14
2026-04-24Gorski Jeffrey GTax withheld303$407.14
2026-04-24Nayar DeepakTax withheld7$407.14
2026-04-24Nayar DeepakTax withheld649$407.14
2026-04-24Kim Peter Sung-JipTax withheld319$407.14
2026-04-24Ruppel DavidTax withheld220$407.14
2026-04-24Stafford Ryan KTax withheld7$407.14
2026-04-24Stafford Ryan KTax withheld611$407.14
2026-04-24Chu MaggieTax withheld318$407.14
2026-04-24Ruppel DavidTax withheld2$407.14
2026-04-24Henderson Gregory N.Tax withheld22$407.14
2026-04-24Chu MaggieTax withheld4$407.14
2026-04-24Kim Peter Sung-JipTax withheld4$407.14
2026-04-22HUNTER GORDONGrant482
2026-04-22GRILLO ANTHONYGrant482
2026-04-22Hamed Karim WagdyGrant1.5K
2026-04-22PAEPER HOLLY BethGrant482
2026-04-22Ruppel DavidGrant1.0K
2026-04-22Kim Peter Sung-JipGrant1.0K
2026-04-22Chu MaggieGrant1.1K
2026-04-22Khandelwal AbhishekGrant2.4K
2026-04-22Gorski Jeffrey GGrant573
2026-04-22Cerniglia Kristina A.Grant482
2026-04-22Henderson Gregory N.Grant6.8K
2026-04-22Nayar DeepakGrant1.6K
2026-04-22GREEN MARIA CGrant482
2026-04-22CHUNG T JGrant482
2026-04-22NOGLOWS WILLIAM PGrant482
2026-03-13GRILLO ANTHONYGift3.0K
2026-03-05CHUNG T JGrant2$323.58
2026-03-05Hamed Karim WagdyGrant3$323.58
2026-03-05Ruppel DavidGrant5$323.58
2026-03-05Kim Peter Sung-JipGrant5$323.58
2026-03-05Chu MaggieGrant6$323.58
2026-03-05Khandelwal AbhishekGrant7$323.58
2026-03-05Khandelwal AbhishekGrant11$323.58
2026-03-05DELLY GAYLA JGrant2$323.58
2026-03-05Cerniglia Kristina A.Grant2$323.58
2026-03-05Henderson Gregory N.Grant30$323.58
2026-03-05Nayar DeepakGrant8$323.58
2026-03-05GREEN MARIA CGrant2$323.58
2026-03-05Stafford Ryan KGrant11$323.58
2026-03-05CHUNG T JGrant21$323.58
2026-03-05NOGLOWS WILLIAM PGrant7$323.58
2026-03-05NOGLOWS WILLIAM PGrant2$323.58
2026-03-05HUNTER GORDONGrant8$323.58
2026-03-05HUNTER GORDONGrant2$323.58
2026-03-05GRILLO ANTHONYGrant72$323.58
2026-03-05GRILLO ANTHONYGrant2$323.58
2026-03-04PAEPER HOLLY BethGrant72
2026-02-24Cerniglia Kristina A.Option exercise1.4K$132.08
2026-02-24Cerniglia Kristina A.Sell2.3K$368.38
2026-02-24Cerniglia Kristina A.Option exercise911$199.24
2026-02-20HUNTER GORDONSell120$366.61
2026-02-20HUNTER GORDONOption exercise911$199.24
2026-02-20HUNTER GORDONSell200$368.42
2026-02-20HUNTER GORDONSell591$367.65
2026-02-10GRILLO ANTHONYSell40$348.47
2026-02-10GRILLO ANTHONYSell4.6K$346.13
2026-02-10GRILLO ANTHONYSell390$347.35
2026-02-10GRILLO ANTHONYOption exercise911$199.24
2026-02-06Gorski Jeffrey GOption exercise2.5K$166.63
2026-02-06Gorski Jeffrey GSell60$344.97
2026-02-06Gorski Jeffrey GSell2.4K$346.94
2026-02-05Gorski Jeffrey GSell749$330.98
2026-02-05Gorski Jeffrey GOption exercise3.5K$166.63
2026-02-05Gorski Jeffrey GSell548$332.21
2026-02-05Gorski Jeffrey GSell1.2K$329.18
2026-02-05Gorski Jeffrey GSell1.0K$330.14
2026-02-04NOGLOWS WILLIAM POption exercise911$199.24
2026-02-04Chu MaggieOption exercise2.1K$262.75
2026-02-04Chu MaggieSell2.1K$326.71
2026-02-02Ruppel DavidOption exercise1.1K$251.82
2026-02-02Ruppel DavidSell1.1K$320.78
2026-02-02Ruppel DavidSell382$322.31
2026-02-02Kim Peter Sung-JipOption exercise5.5K$166.63
2026-02-02Kim Peter Sung-JipSell82$328.14
2026-02-02Kim Peter Sung-JipSell1.5K$327.39
2026-02-02Kim Peter Sung-JipSell1.8K$326.44
2026-02-02Kim Peter Sung-JipSell2.1K$325.44
2026-02-02Nayar DeepakOption exercise4.3K$267.84
2026-02-02Nayar DeepakOption exercise4.6K$240.76
2026-02-02Nayar DeepakSell120$325.50
2026-02-02Nayar DeepakSell320$324.34
2026-02-02Nayar DeepakSell642$323.50
2026-02-02Nayar DeepakSell2.4K$322.37
2026-02-02Nayar DeepakSell1.6K$321.39
2026-02-02Stafford Ryan KOption exercise17K$132.08
2026-02-02Stafford Ryan KSell16K$325.19
2026-02-02Nayar DeepakSell3.8K$320.40
2026-02-02Stafford Ryan KSell623$326.45
2026-02-02Stafford Ryan KSell109$327.15
2025-12-11Kim Peter Sung-JipSell20$270.41
2025-12-11Kim Peter Sung-JipOption exercise2.0K$132.08
2025-12-11Kim Peter Sung-JipSell2.0K$270.02
2025-12-11Stafford Ryan KSell2.2K$268.31
2025-12-05NOGLOWS WILLIAM PGrant3$258.99
2025-12-05NOGLOWS WILLIAM PGrant8$258.99
2025-12-05CHUNG T JGrant3$258.99
2025-12-05CHUNG T JGrant25$258.99
2025-12-05GREEN MARIA CGrant3$258.99
2025-12-05Cerniglia Kristina A.Grant3$258.99
2025-12-05HUNTER GORDONGrant3$258.99
2025-12-05HUNTER GORDONGrant11$258.99
2025-12-05DELLY GAYLA JGrant3$258.99
2025-12-05GRILLO ANTHONYGrant3$258.99
2025-12-05Khandelwal AbhishekGrant9$258.99
2025-12-05GRILLO ANTHONYGrant90$258.99
2025-12-05Hamed Karim WagdyGrant4$258.99
2025-12-05Stafford Ryan KGrant13$258.99
2025-12-05Kim Peter Sung-JipGrant6$258.99
2025-12-05Khandelwal AbhishekGrant13$258.99
2025-12-05Chu MaggieGrant7$258.99
2025-12-05Henderson Gregory N.Grant37$258.99
2025-12-05Nayar DeepakGrant11$259.99
2025-12-05Nayar DeepakOption exercise4.5K$231.64
2025-12-05Nayar DeepakSell4.5K$259.07
2025-12-05Ruppel DavidGrant6$258.99
2025-12-04Nayar DeepakOption exercise3.0K$231.64
2025-12-04Nayar DeepakSell3.0K$259.12
2025-11-26Nayar DeepakSell2.3K$255.50
2025-11-26Nayar DeepakOption exercise2.3K$230.39
2025-10-30GRILLO ANTHONYGrant103$242.83
2025-09-05CHUNG T JGrant3$259.58
2025-09-05DELLY GAYLA JGrant3$259.58
2025-09-05Hamed Karim WagdyGrant4$259.58
2025-09-05Khandelwal AbhishekGrant22$259.58
2025-09-05Stafford Ryan KGrant13$259.58
2025-09-05Kim Peter Sung-JipGrant6$259.58
2025-09-05Chu MaggieGrant7$259.58
2025-09-05Henderson Gregory N.Grant37$259.58
2025-09-05Nayar DeepakGrant11$259.58
2025-09-05Ruppel DavidGrant6$259.58
2025-09-05Conrad AlexanderGrant6$259.58
2025-09-05GREEN MARIA CGrant3$259.58
2025-09-05Cerniglia Kristina A.Grant3$259.58
2025-09-05NOGLOWS WILLIAM PGrant8$259.58
2025-09-05NOGLOWS WILLIAM PGrant3$259.58
2025-09-05CHUNG T JGrant25$259.58
2025-09-05HUNTER GORDONGrant10$259.58
2025-09-05HUNTER GORDONGrant3$259.58
2025-09-05GRILLO ANTHONYGrant86$259.58
2025-09-05GRILLO ANTHONYGrant3$259.58
2025-08-25Stafford Ryan KOption exercise10K$199.24
2025-08-25Stafford Ryan KSell4.9K$260.84
2025-08-25Stafford Ryan KSell4.8K$261.72
2025-08-25Stafford Ryan KSell500$262.60
2025-08-25Conrad AlexanderOption exercise5.3K$166.63
2025-08-25Conrad AlexanderOption exercise3.6K$132.08
2025-08-25Conrad AlexanderOption exercise800$199.24
2025-08-25Conrad AlexanderSell8.2K$261.06
2025-08-25Conrad AlexanderSell3.5K$261.75
2025-08-25Conrad AlexanderSell1.5K$262.73
2025-08-14Ruppel DavidTax withheld65$256.33
2025-08-14Ruppel DavidTax withheld104$256.33
2025-08-13Gorski Jeffrey GSell350$262.42
2025-08-12Gorski Jeffrey GSell750$254.10
2025-08-11CHUNG T JOption exercise911$199.24
2025-08-11CHUNG T JOption exercise1.4K$132.08
2025-08-11CHUNG T JSell1.7K$246.46
2025-08-11CHUNG T JSell679$245.24
2025-08-11Hamed Karim WagdyGrant1.4K
2025-07-31GRILLO ANTHONYGrant106$257.33
2025-06-18Khandelwal AbhishekGrant3.0K
2025-06-18Khandelwal AbhishekGrant4.6K
2025-06-05HUNTER GORDONGrant3$214.18
2025-06-05Ruppel DavidGrant7$214.18
2025-06-05Stafford Ryan KGrant15$214.18
2025-06-05Kim Peter Sung-JipGrant7$214.18
2025-06-05Chu MaggieGrant8$214.18
2025-06-05Henderson Gregory N.Grant42$214.18
2025-06-05Nayar DeepakGrant12$214.18
2025-06-05Marak ChadGrant8$214.18
2025-06-05Conrad AlexanderGrant6$214.18
2025-06-05GREEN MARIA CGrant3$214.18
2025-06-05Cerniglia Kristina A.Grant3$214.18
2025-06-05DELLY GAYLA JGrant3$214.18
2025-06-05HUNTER GORDONGrant11$214.18
2025-06-05CHUNG T JGrant3$214.18
2025-06-05CHUNG T JGrant27$214.18
2025-06-05NOGLOWS WILLIAM PGrant3$214.18
2025-06-05NOGLOWS WILLIAM PGrant9$214.18
2025-06-05GRILLO ANTHONYGrant3$214.18
2025-06-05GRILLO ANTHONYGrant94$214.18
2025-05-13Sethna MeenalOption exercise4.0K$177.65
2025-05-13Sethna MeenalSell100$220.00
2025-05-13Sethna MeenalSell3.9K$219.25
2025-05-05Sethna MeenalOption exercise4.0K$177.65
2025-05-05Sethna MeenalSell3.0K$195.08
2025-05-05Sethna MeenalSell1.0K$195.65
2025-05-05Nayar DeepakSell1.5K$197.50
2025-05-01GRILLO ANTHONYGrant145$188.68
2025-04-28Kim Peter Sung-JipTax withheld74$179.04
2025-04-28Conrad AlexanderTax withheld214$179.04
2025-04-28Chu MaggieTax withheld120$179.04
2025-04-28Gorski Jeffrey GTax withheld101$179.04
2025-04-28Sethna MeenalTax withheld293$179.04
2025-04-28Marak ChadTax withheld87$179.04
2025-04-28Stafford Ryan KTax withheld284$179.04
2025-04-28Nayar DeepakTax withheld273$179.04
2025-04-27Gorski Jeffrey GTax withheld115$176.06
2025-04-27Sethna MeenalTax withheld326$176.06
2025-04-27Marak ChadTax withheld113$176.06
2025-04-27Stafford Ryan KTax withheld297$176.06
2025-04-27Kim Peter Sung-JipTax withheld104$176.06
2025-04-27Chu MaggieTax withheld136$176.06
2025-04-27Conrad AlexanderTax withheld210$176.06
2025-04-27Nayar DeepakTax withheld267$176.06
2025-04-25Gorski Jeffrey GTax withheld136$176.06
2025-04-25Sethna MeenalTax withheld357$176.06
2025-04-25Nayar DeepakTax withheld284$176.06
2025-04-25Conrad AlexanderTax withheld236$176.06
2025-04-25Marak ChadTax withheld173$176.06
2025-04-25Chu MaggieTax withheld154$176.06
2025-04-25Kim Peter Sung-JipTax withheld151$176.06
2025-04-25Stafford Ryan KTax withheld339$176.06
2025-04-24Henderson Gregory N.Grant13K
2025-04-24NOGLOWS WILLIAM PGrant1.0K
2025-04-24CHUNG T JGrant1.0K
2025-04-24GREEN MARIA CGrant1.0K
2025-04-24Cerniglia Kristina A.Grant1.0K
2025-04-24HUNTER GORDONGrant1.0K
2025-04-24DELLY GAYLA JGrant1.0K
2025-04-24GRILLO ANTHONYGrant1.0K
2025-04-24Ruppel DavidGrant2.2K
2025-04-24Marak ChadGrant2.4K
2025-04-24Conrad AlexanderGrant2.0K
2025-04-24Kim Peter Sung-JipGrant2.2K
2025-04-24Nayar DeepakGrant3.6K
2025-04-24Chu MaggieGrant2.4K
2025-04-24Stafford Ryan KGrant4.7K
2025-04-24Gorski Jeffrey GGrant2.0K
2025-04-14Gorski Jeffrey GGrant2.7K
2025-03-28HUNTER GORDONOption exercise800$192.59
2025-03-21GRILLO ANTHONYOption exercise800$192.59
2025-03-07CHUNG T JOther20$218.33
2025-03-07GRILLO ANTHONYOther66$218.33
2025-03-07HUNTER GORDONOther8$218.33
2025-03-07NOGLOWS WILLIAM POther7$218.33
2025-02-19Cole MatthewOption exercise500$192.59
2025-02-19Cole MatthewSell500$255.00
2025-02-14Cole MatthewOption exercise500$192.59
2025-02-14Cole MatthewSell500$248.80
2025-02-06GRILLO ANTHONYBuy3.3K$232.92
2025-02-06GRILLO ANTHONYBuy8.7K$233.87
2025-02-06GRILLO ANTHONYBuy5.3K$234.75
2025-02-06GRILLO ANTHONYBuy183$235.63
2025-02-04NOGLOWS WILLIAM POption exercise800$192.59
2025-01-30GRILLO ANTHONYGrant113$243.16
2025-01-23Chu MaggieGrant1.8K
2025-01-23Sethna MeenalGrant2.7K
2025-01-23Stafford Ryan KGrant2.5K
2025-01-15Cole MatthewOption exercise500$192.59
2025-01-15Cole MatthewSell500$235.00
2025-01-10Kim Peter Sung-JipGrant4.3K
2025-01-10Marak ChadGrant4.3K

All non-derivative Form 4 activity (SEC), newest first.

Notable events (8-K)

DateItems
2026-05-14Reg FDExhibitsfiling ↗
2026-05-06ResultsReg FDExhibitsfiling ↗
2026-04-28Exec/director changeShareholder voteExhibitsfiling ↗
2026-03-13Material agreementDebt obligationExhibitsfiling ↗
2026-03-05Exec/director changeReg FDExhibitsfiling ↗
2026-01-28ResultsReg FDExhibitsfiling ↗
2026-01-08Exec/director changeExhibitsfiling ↗
2025-10-29ResultsReg FDExhibitsfiling ↗

Recent filings

FormFiledPeriodAccession
8-K2026-05-142026-05-140001140361-26-021160 ↗
8-K2026-05-062026-05-060001628280-26-030892 ↗
10-Q2026-05-062026-03-280001628280-26-031041 ↗
8-K2026-04-282026-04-220000889331-26-000005 ↗
8-K2026-03-132026-03-120001140361-26-009393 ↗
8-K2026-03-052026-03-040000889331-26-000002 ↗
10-K2026-02-192025-12-270001628280-26-009585 ↗
8-K2026-01-282026-01-280001628280-26-003710 ↗
8-K2026-01-082026-01-070001140361-26-000720 ↗
8-K2025-10-292025-10-290001628280-25-046908 ↗
10-Q2025-10-292025-09-270001628280-25-047026 ↗
8-K2025-10-282025-10-240000889331-25-000186 ↗