Page 10 of 10 – SEC Filing EXHIBIT A
JOINT FILING AGREEMENT
The undersigned agree to file jointly with the Securities and Exchange
Commission (the “SEC”) any and all statements on Schedule 13D or Schedule 13G and reports on Forms 3, 4 or 5 (and any
amendments or supplements thereto) required under section 13(d) or 16(as) of the Securities Exchange Act of 1934, as amended, in
connection with purchases and sales by the undersigned of the securities of any issuer. For that purpose, the undersigned hereby
constitute and appoint SQN Investors LP, a Delaware limited partnership, as their true and lawful agent and attorney-in-fact, with
full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish
to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section
16(a) of the Securities Exchange Act of 1934, as amended, in connection with said purchases and sales, and to do and perform every
act necessary and proper to be done incident to the exercise of the foregoing power, as fully as the undersigned might or could
do if personally present.
Dated: May 2, 2016
SQN INVESTORS (GP) LLC
By: Scott R. Smith, CFO
SQN INVESTORS LP
By: SQN Investors (GP) LLC
General Partner
By: Scott R. Smith, CFO
SQN PARTNERS (GP) LLC
By: Scott R. Smith, CFO
SQN INVESTORS MASTER FUND LP
By: SQN Partners (GP) LLC
General Partner
By: Scott R. Smith, CFO
Amish Mehta
EXHIBIT A
JOINT FILING AGREEMENT
The undersigned agree to file jointly with the Securities and Exchange
Commission (the “SEC”) any and all statements on Schedule 13D or Schedule 13G and reports on Forms 3, 4 or 5 (and any
amendments or supplements thereto) required under section 13(d) or 16(as) of the Securities Exchange Act of 1934, as amended, in
connection with purchases and sales by the undersigned of the securities of any issuer. For that purpose, the undersigned hereby
constitute and appoint SQN Investors LP, a Delaware limited partnership, as their true and lawful agent and attorney-in-fact, with
full power and authority for and on behalf of the undersigned to prepare or cause to be prepared, sign, file with the SEC and furnish
to any other person all certificates, instruments, agreements and documents necessary to comply with section 13(d) and section
16(a) of the Securities Exchange Act of 1934, as amended, in connection with said purchases and sales, and to do and perform every
act necessary and proper to be done incident to the exercise of the foregoing power, as fully as the undersigned might or could
do if personally present.
Dated: May 2, 2016
| SQN INVESTORS (GP) LLC By: Scott R. Smith, CFO | SQN INVESTORS LP By: SQN Investors (GP) LLC General Partner By: Scott R. Smith, CFO |
| SQN PARTNERS (GP) LLC By: Scott R. Smith, CFO | SQN INVESTORS MASTER FUND LP By: SQN Partners (GP) LLC By: Scott R. Smith, CFO |
| Amish Mehta |
