SIX FLAGS ENTMT CORP NEW

CUSIP: 83001A102 Class: Common Stock

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q1 2019
Shares 990,053 Value ($000) $48,859 Avg Close — Range —
Q4 2018
Shares 1,033,017 Value ($000) $57,467 Avg Close — Range —
Q3 2018
Shares 34,989 Value ($000) $2,443 Avg Close — Range —
Q2 2018
Shares 1,083,549 Value ($000) $75,903 Avg Close — Range —
Q1 2018
Shares 740,767 Value ($000) $46,120 Avg Close — Range —
Q4 2017
Shares 775,915 Value ($000) $51,653 Avg Close — Range —
Q3 2017
Shares 795,695 Value ($000) $48,490 Avg Close — Range —
Q2 2017
Shares 1,546,615 Value ($000) $92,194 Avg Close — Range —
Q1 2017
Shares 980,622 Value ($000) $58,337 Avg Close — Range —
Q4 2016
Shares 568,582 Value ($000) $34,092 Avg Close — Range —
Q3 2016
Shares 891,163 Value ($000) $47,775 Avg Close — Range —
Q2 2016
Shares 701,433 Value ($000) $40,648 Avg Close — Range —
Q1 2016
Shares 1,091,963 Value ($000) $60,593 Avg Close — Range —
Q4 2015
Shares 1,244,133 Value ($000) $68,353 Avg Close — Range —
Q3 2015
Shares 1,130,643 Value ($000) $51,761 Avg Close — Range —