19 results
8-K
EX-99.2
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7 Jul 09
Regulation FD Disclosure
12:00am
8-K
EX-99.2
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6 Mar 09
Helix to Present at Raymond James Conference
12:00am
424B3
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30 May 06
Prospectus supplement
12:00am
425
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28 Mar 06
Business combination disclosure
12:00am
S-1
EX-10.8
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4 Sep 96
IPO registration
12:00am
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