13G Filing: Soros Fund Management and Servicesource International Inc. (SREV)

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Page 10 of 12 – SEC Filing


CUSIP NO. 81763U100 Page
10
of 12 Pages

EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the Schedule 13G with respect to the Common Stock, $0.0001 par value, of ServiceSource International, Inc.,
dated as of January 3, 2018, is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

Date: January 3, 2018 SOROS FUND MANAGEMENT LLC
By: /s/ Regan ONeill
Regan ONeill
Assistant General Counsel
Date: January 3, 2018 GEORGE SOROS
By: /s/ Regan ONeill
Regan ONeill
Attorney-in-Fact
Date: January 3, 2018 ROBERT SOROS
By: /s/ Regan ONeill
Regan ONeill
Attorney-in-Fact

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