BERG MARK STEPHEN

EVP, General Counsel at Pioneer Southwest Energy Partners L.P. · on record since Apr 29, 2008
Sr VP & General Counsel at Exterran Energy Corp. · on record since Jul 18, 2003
Director at ProPetro Holding Corp. · on record since May 19, 2026
Director at HighPoint Resources Corp · on record since Mar 19, 2018
EVP, GEN. COUNSEL & SECTY at PIONEER NATURAL RESOURCES CO · on record since Apr 5, 2005

Insider trading activity of BERG MARK STEPHEN

Transactions on record: 257; since Apr 5, 2005

Open-market buys: 8; $440.6K

Open-market sells: 104; $24.9M

Companies traded: 4; last filing May 21, 2026

Figures computed from official regulatory filings — .

Companies where BERG MARK STEPHEN has traded

ProPetro Holding Corp.8 tx · $75K · May 21, 2026
PIONEER NATURAL RESOURCES CO226 tx · $44.2M · May 3, 2024
HighPoint Resources Corp10 tx · $100.3K · Jun 5, 2020
Pioneer Southwest Energy Partners L.P.13 tx · $360.7K · Dec 18, 2013

Track record of BERG MARK STEPHEN

Statistical track record

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Open-market buys: 8

Last buy: Aug 24, 2020

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Transaction history of BERG MARK STEPHEN

Co-insiders of BERG MARK STEPHEN

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ProPetro Holding Corp.Listing on record	May 21, 2026	AwardD (derivative)	9,101	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 19, 2026	Exercise	28,181	—	n/a (No price was disclosed in the filing)		SEC
ProPetro Holding Corp.Listing on record	May 19, 2026	ExerciseD (derivative)	-28,181	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 23, 2025	AwardD (derivative)	28,181	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 9, 2025	ExerciseD (derivative)	-16,454	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 9, 2025	Exercise	16,454	—	n/a (No price was disclosed in the filing)		SEC
ProPetro Holding Corp.Listing on record	May 10, 2024	AwardD (derivative)	16,454	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-77,253	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-54,725	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Award	37,518	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-27,096	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 11, 2024	Sell	-6,973	240.21 USD	$1.7M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 11, 2024	Sell	-350	241.38 USD	$84.5K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 22, 2024	Other	-1,419	229.14 USD	$325.1K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 8, 2024	Award	11,521	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Award	27,960	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Other	-11,003	228.45 USD	$2.5M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 13, 2023	Gift	3,839	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 13, 2023	Gift	-3,839	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Nov 15, 2023	Other	-253	233.56 USD	$59.1K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Aug 10, 2023	Gift	-3,840	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Aug 10, 2023	Gift	3,840	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	7,679	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	-7,679	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	17,251	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ProPetro Holding Corp.Listing on record	May 21, 2026	AwardD (derivative)	9,101	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 19, 2026	Exercise	28,181	—	n/a (No price was disclosed in the filing)		SEC
ProPetro Holding Corp.Listing on record	May 19, 2026	ExerciseD (derivative)	-28,181	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 23, 2025	AwardD (derivative)	28,181	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 9, 2025	ExerciseD (derivative)	-16,454	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
ProPetro Holding Corp.Listing on record	May 9, 2025	Exercise	16,454	—	n/a (No price was disclosed in the filing)		SEC
ProPetro Holding Corp.Listing on record	May 10, 2024	AwardD (derivative)	16,454	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-77,253	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-54,725	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Award	37,518	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-27,096	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 11, 2024	Sell	-6,973	240.21 USD	$1.7M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 11, 2024	Sell	-350	241.38 USD	$84.5K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 22, 2024	Other	-1,419	229.14 USD	$325.1K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 8, 2024	Award	11,521	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Award	27,960	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Other	-11,003	228.45 USD	$2.5M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 13, 2023	Gift	3,839	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 13, 2023	Gift	-3,839	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Nov 15, 2023	Other	-253	233.56 USD	$59.1K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Aug 10, 2023	Gift	-3,840	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Aug 10, 2023	Gift	3,840	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	7,679	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	-7,679	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 24, 2023	Gift	17,251	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC