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8-K
EX-99.1
g3l id9j6
25 Feb 20
Helix Reports Fourth Quarter and Full Year 2019 Results
12:00am
S-3ASR
EX-4.5
cwwj9782
25 Oct 19
Automatic shelf registration
4:11pm
S-3ASR
EX-4.4
5t4b for5ps
25 Oct 19
Automatic shelf registration
4:11pm
S-3ASR
un6kwl8zzg0x0bzwafg
25 Oct 19
Automatic shelf registration
4:11pm
8-K
EX-4.1
3a7x93r2cph1mz5x
28 Jun 19
Entry into a Material Definitive Agreement
5:26pm