SHEFFIELD SCOTT D

Director at PIONEER NATURAL RESOURCES CO · on record since Feb 16, 2006
Director at Pioneer Southwest Energy Partners L.P. · on record since Apr 29, 2008
Chairman and CEO at Pioneer Southwest Energy Partners L.P. · on record since Mar 8, 2010
Director at Tamboran Resources Corp · on record since Apr 10, 2026
Director at WILLIAMS COMPANIES, INC. · on record since Apr 30, 2026
Director at EVERGREEN RESOURCES INC · on record since Sep 30, 2004
CHAIRMAN & CEO at PIONEER NATURAL RESOURCES CO · on record since Dec 28, 2004

Insider trading activity of SHEFFIELD SCOTT D

Transactions on record: 692; since Aug 20, 2003

Open-market buys: 2; $479.8K

Open-market sells: 403; $119.3M

Companies traded: 5; last filing Jun 3, 2026

Figures computed from official regulatory filings — .

Companies where SHEFFIELD SCOTT D has traded

Tamboran Resources Corp5 tx · $5.1M · Jun 3, 2026
WILLIAMS COMPANIES, INC.16 tx · $581.6K · Apr 30, 2026
PIONEER NATURAL RESOURCES CO662 tx · $233.4M · May 3, 2024
Pioneer Southwest Energy Partners L.P.7 tx · $460.2K · Dec 18, 2013
EVERGREEN RESOURCES INC2 tx · Sep 30, 2004

Track record of SHEFFIELD SCOTT D

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of SHEFFIELD SCOTT D

Co-insiders of SHEFFIELD SCOTT D

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Tamboran Resources CorpListing on record	Jun 3, 2026	Award	2,975	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Tamboran Resources CorpListing on record	May 28, 2026	Award	3,011	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
WILLIAMS COMPANIES, INC.Listing on record	Apr 30, 2026	Award	4,873	73.04 USD	$355.9K		SEC
Tamboran Resources CorpListing on record	Apr 16, 2026	Award	28,545	35.00 USD	$999.1K		SEC
Tamboran Resources CorpListing on record	Apr 10, 2026	Buy	6,990	36.02 USD	$251.8K	conv 39First in 12mo	SEC
Tamboran Resources CorpListing on record	Jan 21, 2026	Award	181,274	21.00 USD	$3.8M	Unusual size	SEC
WILLIAMS COMPANIES, INC.Listing on record	May 1, 2025	Award	3,100	59.67 USD	$185K		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-2,760	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-15,000	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-13,000	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-156,739	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Award	193,493	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	-640,605	—	n/a (No price was disclosed in the filing)		SEC
WILLIAMS COMPANIES, INC.Listing on record	May 2, 2024	Award	4,823	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 19, 2024	Sell	-7,500	249.66 USD	$1.9M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 19, 2024	Sell	-7,500	252.33 USD	$1.9M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 6, 2024	Other	-1,944	237.27 USD	$461.3K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 6, 2024	Sell	-10,000	235.25 USD	$2.4M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Other	-71,503	228.45 USD	$16.3M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Award	181,708	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	-44,757	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	-810	233.56 USD	$189.2K		SEC
WILLIAMS COMPANIES, INC.Listing on record	Apr 27, 2023	Award	5,847	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 9, 2023	Award	21,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Jan 4, 2023	Gift	-20,000	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
Tamboran Resources CorpListing on record	Jun 3, 2026	Award	2,975	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
Tamboran Resources CorpListing on record	May 28, 2026	Award	3,011	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
WILLIAMS COMPANIES, INC.Listing on record	Apr 30, 2026	Award	4,873	73.04 USD	$355.9K		SEC
Tamboran Resources CorpListing on record	Apr 16, 2026	Award	28,545	35.00 USD	$999.1K		SEC
Tamboran Resources CorpListing on record	Apr 10, 2026	Buy	6,990	36.02 USD	$251.8K	conv 39First in 12mo	SEC
Tamboran Resources CorpListing on record	Jan 21, 2026	Award	181,274	21.00 USD	$3.8M	Unusual size	SEC
WILLIAMS COMPANIES, INC.Listing on record	May 1, 2025	Award	3,100	59.67 USD	$185K		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-2,760	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-15,000	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-13,000	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Other	-156,739	—	n/a (No price was disclosed in the filing)		SEC
PIONEER NATURAL RESOURCES COListing unverified	May 3, 2024	Award	193,493	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	-640,605	—	n/a (No price was disclosed in the filing)		SEC
WILLIAMS COMPANIES, INC.Listing on record	May 2, 2024	Award	4,823	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 19, 2024	Sell	-7,500	249.66 USD	$1.9M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 19, 2024	Sell	-7,500	252.33 USD	$1.9M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 6, 2024	Other	-1,944	237.27 USD	$461.3K		SEC
PIONEER NATURAL RESOURCES COListing unverified	Mar 6, 2024	Sell	-10,000	235.25 USD	$2.4M		SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Other	-71,503	228.45 USD	$16.3M	Unusual size	SEC
PIONEER NATURAL RESOURCES COListing unverified	Dec 19, 2023	Award	181,708	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	-44,757	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	-810	233.56 USD	$189.2K		SEC
WILLIAMS COMPANIES, INC.Listing on record	Apr 27, 2023	Award	5,847	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Feb 9, 2023	Award	21,695	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC
PIONEER NATURAL RESOURCES COListing unverified	Jan 4, 2023	Gift	-20,000	0.00 USD	n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise))		SEC