13D Filing: Halcyon Mount Bonnell Fund LP and Nextdecade Corp. (NEXT)

Schedule 13D
CUSIP No. 65342K105

1	NAMES OF REPORTING PERSON
	First Series of HDML Fund I LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☒
3	SEC USE ONLY
4	SOURCE OF FUNDS
	OO
5	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E)				☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER
			636,745
		8	SHARED VOTING POWER
			1,747,176*
		9	SOLE DISPOSITIVE POWER
			636,745
		10	SHARED DISPOSITIVE POWER
			1,747,176*
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
	2,383,921*
12	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
	2.24%
14	TYPE OF REPORTING PERSON
	OO

*Includes shares owned by Halcyon Energy, Power & Infrastructure Capital Holdings LLC.