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.

Avista Acquisition Corp. 4