Yorktown Energy Partners VIII, L.P. [Rocket]

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Yorktown Energy Partners VIII, L.P.

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Date Filed	Type	Description
03/20/2019	SC 13D/A	Yorktown Energy Partners VIII, L.P. reports a 3.1% stake in HALLADOR ENERGY COMPANY
12/04/2018	SC 13D/A	Yorktown Energy Partners VIII, L.P. reports a 6.5% stake in HALLADOR ENERGY COMPANY
06/05/2014	SC 13D/A	Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend]
03/13/2014	SC 13D/A	Yorktown Energy Partners VIII, L.P. reports a 7.2% stake in Mid-Con Energy Partners, LP
10/24/2012	SC 13D/A	Yorktown Energy Partners VIII, L.P. reports a 12.2% stake in Mid-Con Energy Partners, LP
12/30/2011	SC 13D	Form SC 13D - General statement of acquisition of beneficial ownership:
09/25/2009	SC 13D	Form SC 13D - General statement of acquisition of beneficial ownership:

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