NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q4 2018

Shares 7,605 Value ($000) $452 Avg Close $45.03 Range $41.21 - $48.18

Q3 2018

Shares 7,900 Value ($000) $463 Avg Close $43.15 Range $40.65 - $45.13

Q2 2018

Shares 7,900 Value ($000) $452 Avg Close $39.06 Range $37.03 - $41.93

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	7,605	$452	$45.03	$41.21 - $48.18
Q3 2018	7,900	$463	$43.15	$40.65 - $45.13
Q2 2018	7,900	$452	$39.06	$37.03 - $41.93