CUSIP NO. 00548A 10 6 13G Exhibit 99.1

AGREEMENT

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of Common Stock of Adamas Pharmaceuticals, Inc.

Dated: February 17, 2015

DAG VENTURES III-QP, L.P.
BY:	DAG VENTURES MANAGEMENT III, LLC
ITS:	GENERAL PARTNER
By:	/s/ R. Thomas Goodrich
	R. Thomas Goodrich
	Managing Director
DAG VENTURES GP FUND III, LLC
BY:	DAG VENTURES MANAGEMENT III, LLC
ITS:	MANAGER
By:	/s/ R. Thomas Goodrich
	R. Thomas Goodrich
	Managing Director
DAG VENTURES III, L.P.
BY:	DAG VENTURES MANAGEMENT III, LLC
ITS:	GENERAL PARTNER
By:	/s/ R. Thomas Goodrich
	R. Thomas Goodrich
	Managing Director
DAG VENTURES MANAGEMENT III, LLC
By:	/s/ R. Thomas Goodrich
	R. Thomas Goodrich
	Managing Director
/s/ R. Thomas Goodrich
R. Thomas Goodrich
/s/ John J. Cadeddu
John J. Cadeddu