ON ASSIGNMENT INC

CUSIP: 682159108 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q1 2018
Shares 123,851 Value ($000) $10,141 Avg Close — Range —
Q4 2017
Shares 135,621 Value ($000) $8,716 Avg Close — Range —
Q3 2017
Shares 117,941 Value ($000) $6,331 Avg Close — Range —
Q2 2017
Shares 117,941 Value ($000) $6,387 Avg Close — Range —
Q1 2017
Shares 83,591 Value ($000) $4,057 Avg Close — Range —
Q4 2016
Shares 85,191 Value ($000) $3,762 Avg Close — Range —
Q3 2016
Shares 85,191 Value ($000) $3,092 Avg Close — Range —
Q2 2016
Shares 85,191 Value ($000) $3,148 Avg Close — Range —
Q1 2016
Shares 86,650 Value ($000) $3,199 Avg Close — Range —
Q4 2015
Shares 86,650 Value ($000) $3,895 Avg Close — Range —
Q3 2015
Shares 93,490 Value ($000) $3,450 Avg Close — Range —
Q2 2015
Shares 92,800 Value ($000) $3,645 Avg Close — Range —
Q1 2015
Shares 92,800 Value ($000) $3,561 Avg Close — Range —
Q4 2014
Shares 77,300 Value ($000) $2,566 Avg Close — Range —
Q3 2014
Shares 77,300 Value ($000) $2,076 Avg Close — Range —
Q2 2014
Shares 86,570 Value ($000) $3,079 Avg Close — Range —
Q1 2014
Shares 86,570 Value ($000) $3,341 Avg Close — Range —
Q4 2013
Shares 88,870 Value ($000) $3,103 Avg Close — Range —
Q3 2013
Shares 85,470 Value ($000) $2,821 Avg Close — Range —
Q2 2013
Shares 84,955 Value ($000) $2,270 Avg Close — Range —