NORTHWEST PIPE CO

Ticker: NWPX CUSIP: 667746101 Class: Common Stock

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q2 2015
Shares 457,795 Value ($000) $9,325 Avg Close $22.28 Range $19.55 - $25.86
Q1 2015
Shares 367,685 Value ($000) $8,438 Avg Close $24.37 Range $20.50 - $30.28
Q4 2014
Shares 363,826 Value ($000) $10,958 Avg Close $32.30 Range $26.03 - $36.07
Q3 2014
Shares 342,156 Value ($000) $11,668 Avg Close $36.77 Range $32.90 - $41.43
Q2 2014
Shares 338,506 Value ($000) $13,652 Avg Close $36.33 Range $33.15 - $40.54
Q1 2014
Shares 358,791 Value ($000) $12,974 Avg Close $35.69 Range $32.43 - $38.48
Q4 2013
Shares 304,011 Value ($000) $11,479 Avg Close $36.44 Range $31.51 - $39.62
Q3 2013
Shares 271,984 Value ($000) $8,943 Avg Close $29.80 Range $27.51 - $33.00
Q2 2013
Shares 269,899 Value ($000) $7,530 Avg Close $27.10 Range $24.70 - $28.52