RIBBON COMMUNICATIONS INC

Ticker: RBBN CUSIP: 762544104 Class: Common Stock

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q1 2018

Shares 143,400 Value ($000) $731 Avg Close $6.47 Range $5.01 - $7.93

Q4 2017

Shares 81,300 Value ($000) $628 Avg Close $7.68 Range $6.89 - $9.05

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	143,400	$731	$6.47	$5.01 - $7.93
Q4 2017	81,300	$628	$7.68	$6.89 - $9.05