NWPX Infrastructure, Inc. — Director's Dealing 2009

Aug 21, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NORTHWEST PIPE CO (NWPX)
CIK: 0001001385
Period of Report: 2009-08-18

Reporting Person: MAHONEY ROBERT L (President, Tubular Products)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-08-18	Common Stock	M	138	—	Acquired	6563	Direct
2009-08-18	Common Stock	M	184	—	Acquired	6747	Direct
2009-08-18	Common Stock	M	689	—	Acquired	7436	Direct
2009-08-18	Common Stock	F	76	$34	Disposed	7360	Direct
2009-08-18	Common Stock	F	285	$34	Disposed	7075	Direct
2009-08-18	Common Stock	F	57	$34	Disposed	7018	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-08-18	Restricted stock units	$	M	138	Disposed		Common Stock (138)	Direct
2009-08-18	Restricted stock units	$	M	184	Disposed		Common Stock (184)	Direct
2009-08-18	Restricted stock units	$	M	689	Disposed		Common Stock (689)	Direct

Footnotes

F1: Represents shares acquired pursuant to vesting of restricted stock units.

F2: Each restricted stock unit represents a contingent right to receive one share of Northwest Pipe Company common stock.

F3: The restricted stock units vested in full on August 18, 2009.

F4: The restricted stock units vest in 3 equal installments on February 18, 2009, August 18, 2009 and February 18, 2010.

F5: The restricted stock units vest 40% on August 18, 2009, 40% on August 18, 2010 and 20% on August 18, 2011.