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UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 Form 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE YEAR ENDED DECEMBER 31 , 2020 Title of each class Common Stock , par value $ .10 per share TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number 0-21220 Delaware ( State or other jurisdiction of incorporation or organization ) ALAMO GROUP INC . ( Exact name of registrant as specified in its charter ) 74-1621248 ( I.R.S. Employer Identification Number ) 1627 East Walnut , Seguin , Texas 78155 ( Address of principal executive offices , including zip code ) 830-379-1480 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol ( s ) ALG Name of each exchange on which registered New York Stock Exchange SECURITIES REGISTERED PURSUANT TO SECTION 12 ( g ) OF THE ACT : NONE Indicate check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No 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 No 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 requirement for the past 90 days . Yes > No 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 during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No Indicate by check mark whether registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an emerging growth company . See definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and an " emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer Non - accelerated filer Accelerated filer Smaller reporting company Emerging Growth Company ooo 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 . 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 The aggregate market value of the voting stock ( which consists solely of shares of common stock ) held by non - affiliates of the registrant as of June 30 , 2020 ( based upon the last reported sale price of $ 102.64 per share ) was approximately $ 1,004,602,446 on such date . The number of shares of the registrant's common stock , par value $ .10 per share , outstanding as of February 19 , 2021 was 11,896,421 shares .