<SEC-DOCUMENT>0001062993-18-000555-index.html : 20180209
<SEC-HEADER>0001062993-18-000555.hdr.sgml : 20180209
<ACCEPTANCE-DATETIME>20180209141954
ACCESSION NUMBER:		0001062993-18-000555
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180209
DATE AS OF CHANGE:		20180209

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Avista Healthcare Public Acquisition Corp.
		CENTRAL INDEX KEY:			0001661181
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-89667
		FILM NUMBER:		18590770

	BUSINESS ADDRESS:	
		STREET 1:		65 EAST 55TH STREET
		STREET 2:		18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022
		BUSINESS PHONE:		212 593-6900

	MAIL ADDRESS:	
		STREET 1:		65 EAST 55TH STREET
		STREET 2:		18TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Polar Asset Management Partners Inc.
		CENTRAL INDEX KEY:			0001326389
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		401 BAY STREET
		STREET 2:		SUITE 1900, P.O. BOX 19
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 2Y4
		BUSINESS PHONE:		416-367-4364

	MAIL ADDRESS:	
		STREET 1:		401 BAY STREET
		STREET 2:		SUITE 1900, P.O. BOX 19
		CITY:			TORONTO
		STATE:			A6
		ZIP:			M5H 2Y4

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Polar Securities Inc.
		DATE OF NAME CHANGE:	20050506
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>sch13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: sch13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>