Sorry, left of Reserves calc that I risked it by 90%, otherwise it would be $4.5B and not $450M. Purely done due to long life of reserves.... and that 1P is 28Mbo.
Or you could look at it as 1 share gets you approximately between a quarter and a third of a bbl oil on a 2P reserves basis, and deduct from that what you wish
Looks good anyway you slice it.
Regards