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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
____________________________________________________________ 
FORM 10-K/A
(Amendment No. 1)
(Mark One)
Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the fiscal year ended December 31, 2021
or
Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
For the transition period from             to             
Commission file number 0-16125
 FASTENAL COMPANY
(Exact name of registrant as specified in its charter)
Minnesota41-0948415
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
2001 Theurer Boulevard, Winona, Minnesota
55987-1500
(Address of principal executive offices)(Zip Code)
(507) 454-5374
(Registrant's telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common stock, par value $.01 per shareFASTThe Nasdaq Stock Market LLC

Securities registered pursuant to Section 12(g) of the Act:
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act Yes  x    No  o
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act Yes  o    No  x
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  x    No  o
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes  x    No  o
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer", "accelerated filer", "smaller reporting company", and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large Accelerated FilerxAccelerated Filer
Non-accelerated FilerSmaller Reporting Company
Emerging Growth Company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes      No  x
The aggregate market value of the Common Stock held by non-affiliates of the registrant as of June 30, 2021, the last business day of the registrant's most recently completed second fiscal quarter, was $29,835,146,952, based on the closing price of the registrant's Common Stock on that date. For purposes of determining this number, all executive officers and directors of the registrant as of June 30, 2021 are considered to be affiliates of the registrant. This number is provided only for the purposes of this report on Form 10-K and does not represent an admission by either the registrant or any such person as to the status of such person.
As of January 21, 2022, the registrant had 575,550,072 shares of Common Stock issued and outstanding.






EXPLANATORY NOTE
This Amendment No. 1 on Form 10-K/A (this "Amendment") amends the original report on Form 10-K for the fiscal year ended December 31, 2021 filed by Fastenal Company (the "Company") on February 7, 2022 (the "Original Filing"). The sole purpose of this Amendment is (i) to include the Company's 2021 Annual Report to Shareholders (the "Annual Report") as Exhibit 99.1 in the Exhibit Index, which was omitted from the Exhibit Index to the Original Filing and (ii) to change Exhibit 10.4 to refer to the Company's Non-Employee Director Stock Option Plan, as amended and restated effective December 20, 2021. The Annual Report shall be deemed furnished, not filed, with the Securities and Exchange Commission in its entirety as no portions thereof are expressly incorporated by reference into the Original Filing.
Except as described above, this Amendment does not amend, update or change any other items or disclosures contained in the Original Filing, and accordingly, this Amendment does not reflect or purport to reflect any information or events occurring after the original filing date or modify or update those disclosures affected by subsequent events. Accordingly, this Amendment should be read in conjunction with the Original Filing and the Company's other filings with the Securities and Exchange Commission.
Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, this Amendment also includes as exhibits the certifications of the Principal Executive Officer and Principal Financial Officer of the Company pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Because no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 have been omitted from such certifications. The Company is not including certifications pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as no financial statements are being filed with this Amendment.






ITEM 15.EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
a)1. Financial Statements:
Consolidated Balance Sheets as of December 31, 2021 and 2020
Consolidated Statements of Earnings for the years ended December 31, 2021, 2020, and 2019
Consolidated Statements of Comprehensive Income for the years ended December 31, 2021, 2020, and 2019
Consolidated Statements of Stockholders' Equity for the years ended December 31, 2021, 2020, and 2019
Consolidated Statements of Cash Flows for the years ended December 31, 2021, 2020, and 2019
Notes to Consolidated Financial Statements
Report of Independent Registered Public Accounting Firm (KPMG LLP, Minneapolis, MN, Auditor Firm ID: 185)
2. Financial Statement Schedules:
Schedule II—Valuation and Qualifying Accounts
3. Exhibits:
INDEX TO EXHIBITS
Exhibit NumberDescription of Document
3.1
3.2
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
10.1
10.2
10.3
10.4
10.5
10.6
10.7





Exhibit NumberDescription of Document
10.8
10.9
10.10
10.11
21
23
31
31.3
31.4
32
99.1
101The following financial statements from the Annual Report on Form 10-K for the year ended December 31, 2021, formatted in Inline XBRL: (i) Consolidated Balance Sheets, (ii) Consolidated Statements of Earnings, (iii) Consolidated Statements of Comprehensive Income, (iv) Consolidated Statements of Stockholders' Equity, (v) Consolidated Statements of Cash Flows, and (vi) Notes to Consolidated Financial Statements.
104The cover page from the Annual Report on Form 10-K for the year ended December 31, 2021, formatted in Inline XBRL.
* Management contract or compensatory plan or arrangement required to be filed as an exhibit to this Form 10-K pursuant to Item 15(b).






Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
Date:February 10, 2022
FASTENAL COMPANY
By/s/    Holden Lewis
Holden Lewis, Executive Vice President and Chief Financial Officer