Littelfuse, Inc.
US ˙ NasdaqGS ˙ US5370081045

SecurityLFUS / Littelfuse, Inc.
InstitutionAdirondack Trust Co
Latest Disclosed Ownership50 shares
Latest Disclosed Value $ 16,967
Adirondack Trust Co ownership in LFUS / Littelfuse, Inc.

On April 3, 2026 - Adirondack Trust Co filed a 13F-HR form disclosing ownership of 50 shares of Littelfuse, Inc. (US:LFUS) valued at $16,968 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 50 shares of Littelfuse, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $24,232 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)
2026-04-03 2026-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 17 33.33 0.0057
2026-01-08 2025-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 0.00 0.0042
2025-10-20 2025-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 9.09 0.0043
2025-07-11 2025-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 11 22.22 0.0041
2025-04-03 2025-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 -18.18 0.0038
2025-01-17 2024-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 -15.38 0.0045
2024-10-08 2024-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 8.33 0.0051
2024-07-09 2024-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 0.00 0.0052
2024-04-09 2024-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 9.09 0.0051
2024-03-29 2023-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 -8.33 0.0051
2023-10-31 2023-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 -20.00 0.0062
2023-08-09 2023-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 15 15.38 0.0071
2023-04-28 2023-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 18.18 0.0068
2023-01-13 2022-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 11 10.00 0.0057
2022-10-13 2022-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 -23.08 0.0056
2022-07-06 2022-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 8.33 0.0070
2022-04-05 2022-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 -25.00 0.0057
2022-01-13 2021-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 16 6.67 0.0076
2021-11-16 2021-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 15 15.38 0.0071
2021-07-15 2021-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 0.00 0.0066
2021-04-16 2021-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 13 8.33 0.0069
2021-02-12 2020-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 12 33.33 0.0072
2020-10-05 2020-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 0.00 0.0059
2020-08-19 2020-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 28.57 0.0060
2020-04-23 2020-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 7 -22.22 0.0057
2020-02-11 2019-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 0.00 0.0059
2019-10-09 2019-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 0.00 0.0063
2019-07-15 2019-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 -10.00 0.0063
2019-05-13 2019-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 11.11 0.0069
2019-01-18 2018-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 -10.00 0.0070
2018-10-22 2018-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 -9.09 0.0067
2018-07-26 2018-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 11 22.22 0.0078
2018-05-03 2018-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 9 -10.00 0.0064
2018-01-10 2017-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 0.00 0.0073
2017-10-12 2017-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 10 25.00 0.0079
2017-08-02 2017-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 8 0.00 0.0064
2017-04-12 2017-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 8 0.00 0.0056
2017-01-17 2016-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 8 33.33 0.0056
2016-10-21 2016-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 6 0.00 0.0043
2016-07-13 2016-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 6 0.00 0.0043
2016-04-12 2016-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 6 20.00 0.0045
2016-02-08 2015-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 5 0.00 0.0040
2015-10-19 2015-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 5 0.00 0.0040
2015-07-30 2015-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 0 0.00 5 0.00 0.0037
2015-04-07 2015-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 50 50 0.00 5 0.0037
2015-01-27 2014-12-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 0 -30 -100.00 0 -100.00
2014-10-28 2014-09-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 30 0 0.00 3 0.00 0.0023
2014-07-23 2014-06-30 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 30 0 0.00 3 200.00 0.0023
2014-04-17 2014-03-31 13F LITTELFUSE INFORMATION TECHNOLOGY 537008104 30 30 1 0.0008
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.