Fastenal Co

BLAIR WILLIAM & CO/IL FAST

Report date

3/31/2026

Quarter

2026 Q1

Filed

5/8/2026

Shares

7,373,707

Value ($000)

342,140

Weight

1.0%

2013 Q4 - 2026 Q1 (29 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2026 Q1	5/8/2026	342,140	1.0%	7,373,707	3/31/2026
2025 Q4	2/17/2026	281,499	0.8%	7,014,666	12/31/2025
2025 Q3	11/12/2025	341,591	0.9%	6,965,564	9/30/2025
2025 Q2	7/24/2025	286,565	0.8%	6,822,973	6/30/2025
2025 Q1	5/9/2025	255,344	0.8%	3,292,634	3/31/2025
2024 Q4	2/12/2025	234,194	0.7%	3,256,767	12/31/2024
2024 Q3	11/12/2024	233,870	0.7%	3,274,576	9/30/2024
2024 Q2	8/12/2024	204,448	0.6%	3,253,467	6/30/2024
2024 Q1	5/9/2024	252,621	0.8%	3,274,832	3/31/2024
2023 Q4	2/12/2024	212,172	0.7%	3,275,779	12/31/2023
2023 Q3	11/9/2023	179,288	0.7%	3,281,255	9/30/2023
2023 Q2	8/11/2023	194,792	0.7%	3,302,124	6/30/2023
2023 Q1	5/12/2023	178,345	0.7%	3,306,351	3/31/2023
2022 Q4	2/10/2023	155,952	0.7%	3,295,698	12/31/2022
2022 Q3	11/9/2022	154,497	0.7%	3,355,706	9/30/2022
2022 Q2	8/10/2022	165,853	0.7%	3,322,385	6/30/2022
2022 Q1	5/13/2022	204,388	0.7%	3,440,881	3/31/2022
2021 Q4	2/14/2022	224,066	0.7%	3,497,754	12/31/2021
2021 Q3	11/12/2021	181,979	0.6%	3,526,049	9/30/2021
2021 Q2	8/12/2021	180,859	0.6%	3,478,060	6/30/2021
2021 Q1	5/13/2021	180,148	0.7%	3,582,898	3/31/2021
2020 Q4	2/9/2021	174,021	0.6%	3,563,808	12/31/2020
2020 Q3	11/6/2020	162,781	0.7%	3,610,136	9/30/2020
2020 Q2	8/12/2020	158,046	0.8%	3,689,223	6/30/2020
2020 Q1	5/11/2020	113,802	0.7%	3,641,653	3/31/2020
2019 Q4	2/13/2020	142,243	0.7%	3,849,603	12/31/2019
2014 Q2	8/1/2014	415,908	0.7%	8,403,896	6/30/2014
2014 Q1	5/6/2014	432,364	0.7%	8,769,697	3/31/2014
2013 Q4	2/11/2014	355,659	0.6%	7,485,979	12/31/2013