Filed by Trine Acquisition Corp.

Pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934

Subject Company: Trine Acquisition Corp.

Commission File No. 001-38835

Date: August 26, 2020

Trine Acquisition Corp. (“Trine”) and Desktop Metal, Inc. (“Desktop Metal”) prepared an investor presentation, which was first used by Trine and Desktop Metal on August 26, 2020 in presentations to investors in connection with the previously announced merger pursuant to an Agreement and Plan of Merger (“the Merger Agreement”), by and among Trine, Sparrow Merger Sub, Inc., a wholly owned subsidiary of Trine (“Merger Sub”), and Desktop Metal pursuant to which Merger Sub will merge with and into Desktop Metal, with Desktop Metal surviving as the surviving company, on the terms and subject to the conditions set forth in the Merger Agreement. A copy of the investor presentation is set forth below.