Fastenal Company
MX ˙ BMV ˙ US3119001044
SecurityMX:FAST / Fastenal Company
InstitutionSittner & Nelson, Llc
Latest Disclosed Ownership65,871 shares
Latest Disclosed Value $ 3,056,398
Sittner & Nelson, Llc reports 3.83% decrease in ownership of FAST / Fastenal Company

On May 11, 2026 - Sittner & Nelson, Llc filed a 13F-HR form disclosing ownership of 65,871 shares of Fastenal Company (MX:FAST) valued at $3,056,398 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 68,495 shares of Fastenal Company. This represents a change in shares of -3.83% during the quarter.

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)
2026-05-11 2026-03-31 13F FASTENAL COM 311900104 65,871 -2,624 -3.83 3,056 -6.52 1.0334
2026-02-10 2025-12-31 13F FASTENAL COM 311900104 68,495 226 0.33 3,269 -2.33 1.1570
2025-11-14 2025-09-30 13F FASTENAL CO COM COM 311900104 68,269 -388 -0.57 3,348 16.09 1.2169
2025-08-08 2025-06-30 13F FASTENAL CO COM COM 311900104 68,657 33,463 95.08 2,884 5.64 1.1600
2025-05-13 2025-03-31 13F FASTENAL CO COM COM 311900104 35,194 9 0.03 2,729 7.87 1.1645
2025-02-11 2024-12-31 13F FASTENAL CO COM COM 311900104 35,185 -379 -1.07 2,530 -0.35 1.0966
2024-10-31 2024-09-30 13F FASTENAL CO COM COM 311900104 35,564 -141 -0.39 2,540 13.20 1.1358
2024-08-13 2024-06-30 13F FASTENAL CO COM COM 311900104 35,705 9 0.03 2,244 -18.53 1.1048
2024-05-10 2024-03-31 13F FASTENAL CO COM COM 311900104 35,696 158 0.44 2,754 19.64 1.3872
2024-02-13 2023-12-31 13F FASTENAL CO COM COM 311900104 35,538 17 0.05 2,302 18.61 1.2302
2023-11-13 2023-09-30 13F FASTENAL CO COM COM 311900104 35,521 -191 -0.53 1,941 -7.88 1.1181
2023-08-14 2023-06-30 13F FASTENAL CO COM COM 311900104 35,712 10 0.03 2,107 9.40 1.1571
2023-05-09 2023-03-31 13F FASTENAL CO COM COM 311900104 35,702 10 0.03 1,926 14.04 1.1052
2023-02-02 2022-12-31 13F FASTENAL CO COM COM 311900104 35,692 8 0.02 1,689 2.74 1.0327
2022-11-14 2022-09-30 13F FASTENAL CO COM COM 311900104 35,684 8 0.02 1,643 -7.75 1.1030
2022-08-12 2022-06-30 13F FASTENAL CO COM COM 311900104 35,676 9 0.03 1,781 -15.95 1.1624
2022-05-10 2022-03-31 13F FASTENAL CO COM COM 311900104 35,667 209 0.59 2,119 -6.69 1.2265
2022-02-09 2021-12-31 13F FASTENAL CO COM COM 311900104 35,458 6 0.02 2,271 24.10 1.3218
2021-11-12 2021-09-30 13F FASTENAL CO COM COM 311900104 35,452 7 0.02 1,830 -0.71 1.1817
2021-08-12 2021-06-30 13F FASTENAL CO COM COM 311900104 35,445 8 0.02 1,843 3.42 1.2987
2021-05-06 2021-03-31 13F FASTENAL CO COM COM 311900104 35,437 1,008 2.93 1,782 6.01 1.3292
2021-02-16 2020-12-31 13F FASTENAL COM 311900104 34,429 34,429 1,681 1.5075
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.