RIBBON COMMUNICATIONS INC

Ticker: RBBN CUSIP: 762544104 Class: Common Stock

KING LUTHER CAPITAL MANAGEMENT CORP's Holding History (CIK: 0000310051)

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

Q1 2018

Shares 252,200 Value ($000) $1,286 Avg Close $6.47 Range $5.01 - $7.93

Q4 2017

Shares 481,301 Value ($000) $3,720 Avg Close $7.68 Range $6.89 - $9.05

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	252,200	$1,286	$6.47	$5.01 - $7.93
Q4 2017	481,301	$3,720	$7.68	$6.89 - $9.05