NORTHWEST BIOTHERAPEUTICS IN

Ticker: NWBO CUSIP: 66737P600 Class: COM

TEACHER RETIREMENT SYSTEM OF TEXAS's Holding History (CIK: 0000796848)

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

Q1 2016

Shares 7,377 Value ($000) $11 Avg Close $1.97 Range $1.28 - $3.18

Q4 2015

Shares 4,728 Value ($000) $15 Avg Close $4.81 Range $3.08 - $6.90

Q3 2015

Shares 6,132 Value ($000) $38 Avg Close $9.35 Range $5.85 - $12.55

Q2 2015

Shares 1,762 Value ($000) $17 Avg Close $8.76 Range $7.05 - $10.79

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	7,377	$11	$1.97	$1.28 - $3.18
Q4 2015	4,728	$15	$4.81	$3.08 - $6.90
Q3 2015	6,132	$38	$9.35	$5.85 - $12.55
Q2 2015	1,762	$17	$8.76	$7.05 - $10.79