Report of Foreign Issuer (6-k)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2020

Commission File Number: 001-33621

ALEXCO RESOURCE CORP.

(Translation of registrant's name into English)

Suite 1225, Two Bentall Centre

555 Burrard Street, Box 216

Vancouver, BC V7X 1M9 Canada

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

¨ Form 20-F

x Form 40-F

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨

INCORPORATION BY REFERENCE

Exhibit 99.1 to this Form 6-K of Alexco Resource Corp. (the “Company”) is hereby incorporated by reference as an exhibit to the Registration Statement on Form F-10 (File No. 333-227024) of the Company, as amended or supplemented.

SUBMITTED HEREWITH

Exhibits

99.1	Material change report dated February 24, 2020 in respect of the sale of shares of the Company’s subsidiary, Alexco Environmental Group Holdings Inc.

SIGNATURES

Pursuant to the requirements 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.