Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 (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 period ended March 31, 2021

Commission File Number 000-51151

NEXTSOURCE MATERIALS INC.

(Translation of registrant’s name into English)

1940-130 King Street West

Toronto, Ontario, Canada

M5X 2A2

(Address of principal executive office)

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

Form 20-F

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Form 40-F

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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):

Yes

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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):

Yes

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EXHIBITS

99.1

NextSource Materials Inc. Unaudited Condensed Consolidated Interim Financial Statements for the Nine and Three Months Ended March 31, 2021 as filed on SEDAR on May 11, 2021.

99.2

NextSource Materials Inc. Management’s Discussion and Analysis for the Nine and Three Months Ended March 31, 2021 as filed on SEDAR on May 11, 2021.

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.

Dated: May 11, 2021

NEXTSOURCE MATERIALS INC.