Fastenal Company
US ˙ NasdaqGS ˙ US3119001044

SecurityFAST / Fastenal Company
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership51,918 shares
Latest Disclosed Value $ 2,408,999
Summit Trail Advisors, Llc reports 39.32% increase in ownership of FAST / Fastenal Company

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 51,918 shares of Fastenal Company (US:FAST) valued at $2,408,995 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 37,266 shares of Fastenal Company. This represents a change in shares of 39.32% during the quarter. The current value of the position is $2,412,110 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 FASTENAL COM 311900104 51,918 14,652 39.32 2,409 61.07 0.0345
2026-02-17 2025-12-31 13F FASTENAL COM 311900104 37,266 7,895 26.88 1,495 3.82 0.0259
2025-11-14 2025-09-30 13F FASTENAL COM 311900104 29,371 15,880 117.71 1,440 154.42 0.0199
2025-08-14 2025-06-30 13F FASTENAL COM 311900104 13,491 13,491 567 0.0097
2025-01-29 2024-12-31 13F FASTENAL COM 311900104 0 -3,445 -100.00 0 -100.00
2024-11-12 2024-09-30 13F FASTENAL COM 311900104 3,445 3,445 246 0.0061
2024-08-13 2024-06-30 13F FASTENAL COM 311900104 0 -5,477 -100.00 0 -100.00
2024-04-23 2024-03-31 13F FASTENAL COM 311900104 5,477 663 13.77 422 35.69 0.0112
2024-02-06 2023-12-31 13F FASTENAL COM 311900104 4,814 12 0.25 312 18.70 0.0103
2023-10-30 2023-09-30 13F FASTENAL COM 311900104 4,802 4,802 262 0.0097
2018-08-10 2018-06-30 13F FASTENAL CO COM EQUITY 311900104 0 -45,966 -100.00 0 -100.00
2018-05-21 2018-03-31 13F FASTENAL CO COM EQUITY 311900104 45,966 45,021 4,764.13 46 -14.81 0.0072
2018-02-14 2017-12-31 13F FASTENAL EQUITY 311900104 945 945 54 0.0068
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.