34 results
Page 2 of 2
424B1
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12 Oct 12
Prospectus with pricing info
12:00am
424A
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9 Oct 12
Prospectus with significant changes
12:00am
10-K
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21 Mar 12
Annual report
12:00am
8-K
EX-10.4
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22 Dec 11
Laredo Petroleum Holdings, Inc. Closes Initial Public Offering and Exercise of Underwriters’ Option to Purchase Additional Shares
12:00am
S-1
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24 Aug 11
IPO registration
12:00am