SEC Form 4 · accession 0001463252-15-000080

· PLT

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Joseph B Burton

Officer — TOP DEVELOPMENT ENGINEERING EX

Period of report

Nov 12, 2015

Accepted (ET)

Nov 16, 2015 · 4:22 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0000914025

Table I — non-derivative securities

No Table I lines on this filing.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	13,144	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	300	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	300	12,844	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	12,644	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	12,544	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	92	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	92	12,452	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	12,352	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	12,152	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	12,052	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	11,852	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	11,752	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	11,652	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	11,452	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	252	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	252	11,200	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	500	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	500	10,700	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	10,600	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	10,400	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	200	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	200	10,200	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	10,100	D
Non-Qualified Stock Option (right to buy)^F1	$32.94	Nov 12, 2015	M	100	D	Nov 2, 2013	Nov 2, 2019	COMMON STOCK	100	10,000	D

Explanation of responses

F1Option was granted by the Issuer pursuant to a Rule 16-b plan and becomes exercisable as follows: 33.3% of the shares subject to the option vest 12 months from date of grant; and 1/36th of the shares subject to option vest each month thereafter.