INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

HPS Investment Partners, LLC

(Last)

(First)

(Middle)

40 WEST 57TH STREET, 33RD FLOOR

(Street)

NEW YORK

10019

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/14/2019

3. Issuer Name and Ticker or Trading Symbol
Trine Acquisition Corp. [ TRNEU ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

**Table I - Non-Derivative Securities Beneficially Owned**
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

**Table II - Derivative Securities Beneficially Owned**
**(e.g., puts, calls, warrants, options, convertible securities)**
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Class B common stock	⁽¹⁾	⁽¹⁾	Class A Common Stock	7,403,750⁽²⁾⁽³⁾	⁽¹⁾	I	See Footnotes⁽²⁾⁽³⁾

Explanation of Responses:

1. As described in the issuer's registration statement on Form S-1 (File No. 333-229853) under the heading "Description of Securities--Founder Shares," the shares of Class B common stock will automatically convert into shares of Class A common stock of the issuer at the time of the issuer's initial business combination or earlier at the option of the holder, in each case, on a one-for-one basis, subject to adjustment for stock splits, stock dividends, reorganizations, recapitalizations and the like, and certain anti-dilution rights.

2. These shares represent Class B common stock held by Trine Sponsor IH, LLC (the "Sponsor"), which were originally acquired pursuant to a subscription agreement by and between Trine Holdings, LLC, the prior sponsor of the issuer, and the issuer and subsequently transferred by Trine Holdings, LLC to the Sponsor. The Class B common stock owned by the Sponsor includes up to 978,750 shares that are subject to forfeiture in the event the underwriters of the issuer's initial public offering do not exercise in full their over-allotment option as described in the issuer's registration statement.

3. Robin Trine Holdings, LLC ("RTH") and HPS Investment Partners, LLC ("HPS") are the members of the Sponsor, and as such each of HPS and RTH has appointed a member to the board of the Sponsor, which board has voting and investment discretion with respect to the common stock held of record by the Sponsor. Leo Hindery, Jr., Chairman and Chief Executive Officer of the issuer, is the managing member of RTH. Based on the foregoing, Mr. Hindery, RTH and HPS may be deemed to have shared beneficial ownership of the common stock held directly by the Sponsor. Each such entity or person disclaims any beneficial ownership of the reported shares other than to the extent of any pecuniary interest they may have therein, directly or indirectly.

	/s/ Paul Knollmeyer	03/14/2019
	** Signature of Reporting Person	Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.