SILVER SPRING NETWORKS INC

CUSIP: 82817Q103 Class: Common

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017
Shares 732,825 Value ($000) $11,901 Avg Close — Range —
Q3 2017
Shares 342,185 Value ($000) $5,533 Avg Close — Range —