Diamondback Energy, Inc. — Director's Dealing 2013

Sep 18, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Diamondback Energy, Inc. (FANG)
CIK: 0001539838
Period of Report: 2013-09-16

Reporting Person: Hollis Michael L. (VP Drilling)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-09-16	Common Stock	M	17143	—	Acquired	17143	Direct
2013-09-16	Common Stock	S	17143	$44.7119	Disposed	0	Direct
2013-09-17	Common Stock	M	46955	$17.50	Acquired	46955	Direct
2013-09-17	Common Stock	S	46955	$44.5649	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-09-16	Restricted Stock Units	$	M	17143	Disposed		Common Stock (17143)	Direct
2013-09-17	Stock Option (right to buy)	$17.50	M	46955	Disposed	2016-09-12	Common Stock (46955)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of common stock, par value $0.01 per share (the "Common Stock"), of Diamondback Energy, Inc. (the "Issuer") and was granted under the Issuer's 2013 Stock Incentive Plan.

F2: The remaining 17,144 restricted stock units will vest in two equal annual installments beginning on September 12, 2014.

F3: Options to purchase 3,045 shares of Common Stock are currently vested. The remaining options to purchase 50,000 shares of Common Stock will vest in two remaining approximately equal annual installments beginning on September 12, 2014.