ON ASSIGNMENT INC

CUSIP: 682159108 Class: COM

Horizon Investment Services, LLC's Holding History (CIK: 0001426940)

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

Q1 2018
Shares 2,448 Value ($000) $200 Avg Close — Range —
Q3 2016
Shares 55,743 Value ($000) $2,023 Avg Close — Range —
Q2 2016
Shares 56,692 Value ($000) $2,095 Avg Close — Range —
Q1 2016
Shares 64,300 Value ($000) $2,374 Avg Close — Range —
Q4 2015
Shares 64,946 Value ($000) $2,919 Avg Close — Range —
Q3 2015
Shares 15,041 Value ($000) $555 Avg Close — Range —