Craig O. Pierson

Insider

First SEC filing: April 3, 2014 · Latest: April 3, 2014

On this page

Insider at

0 buys (P) 0 sells (S) Net: $0 + 11 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

11 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 1, 2016	MPLX	A	1,058	—	—	4,981 Direct	+26.97%	Acquired	(price as of 2026-08-21)
April 1, 2016	MPLX	F	35	$28.39	$994	3,923 Direct	-0.88%	Disposed	106.3% (price as of 2026-08-21)
April 1, 2016	MPLX	F	25	$28.39	$710	3,958 Direct	-0.63%	Disposed	106.3% (price as of 2026-08-21)
April 1, 2016	MPLX	F	31	$28.39	$880	3,983 Direct	-0.77%	Disposed	106.3% (price as of 2026-08-21)
Feb. 1, 2016	MPLX	A	57	—	—	4,014 Direct	+1.44%	Acquired	(price as of 2026-08-21)
April 1, 2015	MPLX	F	25	$73.54	$1,838	3,957 Direct	-0.63%	Disposed	-20.3% (price as of 2026-08-21)
April 1, 2015	MPLX	F	31	$73.54	$2,280	3,982 Direct	-0.77%	Disposed	-20.3% (price as of 2026-08-21)
April 1, 2015	MPLX	A	308	—	—	4,013 Direct	+8.31%	Acquired	(price as of 2026-08-21)
April 1, 2014	MPLX	A	216	—	—	3,705 Direct	+6.19%	Acquired	(price as of 2026-08-21)
April 1, 2014	MPLX	F	31	$48.89	$1,516	3,489 Direct	-0.88%	Disposed	19.8% (price as of 2026-08-21)
April 1, 2013	MPLX	A	270	—	—	3,520 Direct	+8.31%	Acquired	(price as of 2026-08-21)
Oct. 31, 2012	MPLX	P	3,250	$22.00	$71,500	3,250 Direct	—	Acquired	166.3% (price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.