Exhibit 99.1

Joint Filer Information

Name of Joint Filer:	Avista Acquisition, LLC
Address of Joint Filer:	c/o Avista Healthcare Public Acquisition Corp.
	65 East 55th Street
	18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner
Issuer Name and Ticker or Trading Symbol:	Avista Healthcare Public Acquisition Corp. [AHPA]
Date of Event Requiring Statement:
(Month/Day/Year):	10/30/2018
Designated Filer:	Avista Acquisition Corp.
Name of Joint Filer:	Thompson Dean
Address of Joint Filer:	c/o Avista Healthcare Public Acquisition Corp.
	65 East 55th Street
	18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	Director; 10% Owner; Officer (Executive Chairman)
Issuer Name and Ticker or Trading Symbol:	Avista Healthcare Public Acquisition Corp. [AHPA]
Date of Event Requiring Statement:
(Month/Day/Year):	10/30/2018
Designated Filer:	Avista Acquisition Corp.
Name of Joint Filer:	David Burgstahler
Address of Joint Filer:	c/o Avista Healthcare Public Acquisition Corp.
	65 East 55th Street
	18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	Director; 10% Owner; Officer (President and Chief Executive Officer)
Issuer Name and Ticker or Trading Symbol:	Avista Healthcare Public Acquisition Corp. [AHPA]
Date of Event Requiring Statement:
(Month/Day/Year):	10/30/2018
Designated Filer:	Avista Acquisition Corp.