Archrock Inc. (AROC): Carlson Capital Increase Its Stake; Plans to Go Activist

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CUSIP No. 03957W106		SCHEDULE 13D

1		NAMES OF REPORTING PERSON Black Diamond SRI Offshore Ltd.
2		CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a)  ¨        (b)  x
3		SEC USE ONLY
4		SOURCE OF FUNDS WC
5		CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) ¨
6		CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH				7		SOLE VOTING POWER 0
				8		SHARED VOTING POWER 31,700
				9		SOLE DISPOSITIVE POWER 0
				10		SHARED DISPOSITIVE POWER 31,700
11		AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 31,700
12		CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13		PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES 0.05%
14		TYPE OF REPORTING PERSON CO

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