Littelfuse, Inc.
US ˙ NasdaqGS ˙ US5370081045

SecurityLFUS / Littelfuse, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership4,674 shares
Latest Disclosed Value $ 1,586,122
M&t Bank Corp reports 7.94% decrease in ownership of LFUS / Littelfuse, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 4,674 shares of Littelfuse, Inc. (US:LFUS) valued at $1,586,122 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 5,077 shares of Littelfuse, Inc.. This represents a change in shares of -7.94% during the quarter. The current value of the position is $2,243,707 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F LITTELFUSE COM 537008104 4,674 -403 -7.94 1,586 23.52 0.0054
2026-01-30 2025-12-31 13F/A-1 LITTELFUSE COM 537008104 5,077 211 4.34 1,284 1.90 0.0041
2026-01-28 2025-12-31 13F LITTELFUSE COM 537008104 24,148 19,282 1,056 0.0006
2025-11-14 2025-09-30 13F LITTELFUSE COM 537008104 4,866 -709 -12.72 1,260 -0.32 0.0042
2025-08-13 2025-06-30 13F LITTELFUSE COM 537008104 5,575 123 2.26 1,264 17.80 0.0043
2025-04-30 2025-03-31 13F LITTELFUSE COM 537008104 5,452 -97 -1.75 1,073 -17.97 0.0039
2025-02-06 2024-12-31 13F LITTELFUSE COM 537008104 5,549 -400 -6.72 1,308 -17.11 0.0044
2024-11-19 2024-09-30 13F/A-1 LITTELFUSE COM 537008104 5,949 -68 -1.13 1,578 2.60 0.0052
2024-11-15 2024-09-30 13F LITTELFUSE COM 537008104 5,949 -68 1,578 0.0009
2024-07-31 2024-06-30 13F LITTELFUSE COM 537008104 6,017 68 1.14 1,539 6.73 0.0053
2024-05-07 2024-03-31 13F LITTELFUSE COM 537008104 5,949 328 5.84 1,442 -4.13 0.0050
2024-02-06 2023-12-31 13F LITTELFUSE COM 537008104 5,621 -239 -4.08 1,504 3.80 0.0055
2023-11-02 2023-09-30 13F LITTELFUSE COM 537008104 5,860 -163 -2.71 1,449 -17.45 0.0058
2023-08-09 2023-06-30 13F LITTELFUSE COM 537008104 6,023 -938 -13.48 1,755 -6.00 0.0065
2023-05-11 2023-03-31 13F LITTELFUSE COM 537008104 6,961 -252 -3.49 1,866 17.51 0.0072
2023-02-13 2022-12-31 13F/A-1 LITTELFUSE COM 537008104 7,213 188 2.68 1,589 13.75 0.0064
2023-02-13 2022-12-31 13F LITHIA MTRS COM 537008104 5,451 -1,574 1,199 0.0048
2022-11-17 2022-09-30 13F/A-1 LITTELFUSE COM 537008104 7,025 32 0.46 1,396 -19.77 0.0062
2022-11-14 2022-09-30 13F LITTELFUSE COM 537008104 7,025 32 1,366 0.0012
2022-08-05 2022-06-30 13F LITTELFUSE COM 537008104 6,993 1,366 24.28 1,740 24.02 0.0082
2022-05-09 2022-03-31 13F LITTELFUSE COM 537008104 5,627 156 2.85 1,403 -18.48 0.0062
2022-02-07 2021-12-31 13F LITTELFUSE COM 537008104 5,471 164 3.09 1,721 18.77 0.0072
2021-10-28 2021-09-30 13F LITTELFUSE COM 537008104 5,307 271 5.38 1,449 12.94 0.0065
2021-08-13 2021-06-30 13F LITTELFUSE COM 537008104 5,036 -305 -5.71 1,283 -9.20 0.0056
2021-05-06 2021-03-31 13F LITTELFUSE COM 537008104 5,341 -75 -1.38 1,413 2.47 0.0061
2021-02-12 2020-12-31 13F LITTELFUSE COM 537008104 5,416 268 5.21 1,379 51.04 0.0060
2020-11-06 2020-09-30 13F LITTELFUSE COM 537008104 5,148 144 2.88 913 7.03 0.0045
2020-07-29 2020-06-30 13F LITTELFUSE COM 537008104 5,004 1,731 52.89 853 -95.01 0.0046
2020-05-14 2020-03-31 13F LITTELFUSE COM 537008104 3,273 662 25.35 17,098 3,326.45 0.1011
2020-02-07 2019-12-31 13F LITTELFUSE COM 537008104 2,611 438 20.16 499 29.61 0.0023
2019-11-12 2019-09-30 13F LITTELFUSE COM 537008104 2,173 154 7.63 385 7.84 0.0019
2019-08-12 2019-06-30 13F LITTELFUSE COM 537008104 2,019 166 8.96 357 5.62 0.0019
2019-05-15 2019-03-31 13F LITTELFUSE COM 537008104 1,853 404 27.88 338 36.29 0.0018
2019-02-01 2018-12-31 13F LITTELFUSE COM 537008104 1,449 -14 -0.96 248 -14.48 0.0014
2018-11-09 2018-09-30 13F LITTELFUSE COM 537008104 1,463 11 0.76 290 -12.39 0.0015
2018-08-10 2018-06-30 13F LITTELFUSE COM 537008104 1,452 127 9.58 331 19.93 0.0018
2018-05-04 2018-03-31 13F LITTELFUSE COM 537008104 1,325 -32 -2.36 276 2.60 0.0015
2018-02-06 2017-12-31 13F LITTELFUSE COM 537008104 1,357 -503 -27.04 269 -26.30 0.0014
2017-11-13 2017-09-30 13F LITTELFUSE COM 537008104 1,860 -7 -0.37 365 18.51 0.0020
2017-08-11 2017-06-30 13F LITTELFUSE COM 537008104 1,867 -650 -25.82 308 -23.57 0.0018
2017-05-10 2017-03-31 13F LITTELFUSE COM 537008104 2,517 70 2.86 403 8.63 0.0024
2017-02-14 2016-12-31 13F LITTELFUSE COM 537008104 2,447 14 0.58 371 18.53 0.0023
2016-11-04 2016-09-30 13F LITTELFUSE COM 537008104 2,433 -3 -0.12 313 8.68 0.0020
2016-08-04 2016-06-30 13F LITTELFUSE COM 537008104 2,436 21 0.87 288 -3.36 0.0019
2016-05-11 2016-03-31 13F LITTELFUSE COM 537008104 2,415 -190 -7.29 298 6.81 0.0020
2016-02-12 2015-12-31 13F LITTELFUSE COM 537008104 2,605 -148 -5.38 279 11.60 0.0019
2015-11-13 2015-09-30 13F LITTELFUSE COM 537008104 2,753 -1,574 -36.38 250 -39.02 0.0017
2015-08-14 2015-06-30 13F LITTELFUSE COM 537008104 4,327 -190 -4.21 410 -8.69 0.0025
2015-05-14 2015-03-31 13F LITTELFUSE COM 537008104 4,517 -1,494 -24.85 449 -22.72 0.0028
2015-02-12 2014-12-31 13F LITTELFUSE COM 537008104 6,011 -836 -12.21 581 -0.51 0.0036
2014-11-14 2014-09-30 13F LITTELFUSE COM 537008104 6,847 6,847 584 0.0041
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.