John S Swearingen

Insider

First SEC filing: March 4, 2015 · Latest: Jan. 28, 2020

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 39 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

39 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 2, 2020	MPLX	A	4,983	—	—	26,738 Direct	+22.91%	Acquired	(price as of 2026-08-21)
March 2, 2020	MPLX	F	448	$20.08	$8,996	21,755 Direct	-2.02%	Disposed	191.7% (price as of 2026-08-21)
March 2, 2020	MPLX	F	1,066	$20.08	$21,405	22,203 Direct	-4.58%	Disposed	191.7% (price as of 2026-08-21)
March 2, 2020	MPLX	F	978	$20.08	$19,638	23,269 Direct	-4.03%	Disposed	191.7% (price as of 2026-08-21)
Jan. 24, 2020	MPLX	A	2,585	—	—	24,247 Direct	+11.93%	Acquired	(price as of 2026-08-21)
March 1, 2019	MPLX	A	3,014	—	—	21,569 Direct	+16.24%	Acquired	(price as of 2026-08-21)
March 1, 2019	MPLX	F	707	$33.24	$23,501	18,555 Direct	-3.67%	Disposed	76.2% (price as of 2026-08-21)
March 1, 2019	MPLX	F	649	$33.24	$21,573	19,262 Direct	-3.26%	Disposed	76.2% (price as of 2026-08-21)
March 1, 2019	MPLX	F	373	$33.24	$12,399	19,911 Direct	-1.84%	Disposed	76.2% (price as of 2026-08-21)
Jan. 25, 2019	MPLX	A	517	—	—	20,284 Direct	+2.62%	Acquired	(price as of 2026-08-21)
March 1, 2018	MPLX	A	7,166	—	—	19,767 Direct	+56.87%	Acquired	(price as of 2026-08-21)
March 1, 2018	MPLX	F	649	$34.66	$22,494	12,601 Direct	-4.90%	Disposed	69.0% (price as of 2026-08-21)
March 1, 2018	MPLX	F	373	$34.66	$12,928	13,250 Direct	-2.74%	Disposed	69.0% (price as of 2026-08-21)
March 1, 2018	MPLX	F	73	$34.66	$2,530	13,623 Direct	-0.53%	Disposed	69.0% (price as of 2026-08-21)
Jan. 31, 2018	MPLX	A	173	—	—	13,696 Direct	+1.28%	Acquired	(price as of 2026-08-21)
March 1, 2017	MPC	A	14,045	—	—	14,045 Direct	—	Acquired	(price as of 2026-08-21)
March 1, 2017	MPC	A	1,962	—	—	46,995 Direct	+4.36%	Acquired	(price as of 2026-08-21)
March 1, 2017	MPC	F	718	$50.74	$36,431	45,033 Direct	-1.57%	Disposed	615.0% (price as of 2026-08-21)
March 1, 2017	MPC	F	416	$50.74	$21,108	45,751 Direct	-0.90%	Disposed	615.0% (price as of 2026-08-21)
March 1, 2017	MPC	F	403	$50.74	$20,448	46,167 Direct	-0.87%	Disposed	615.0% (price as of 2026-08-21)
March 1, 2017	MPLX	A	6,576	—	—	13,523 Direct	+94.66%	Acquired	(price as of 2026-08-21)
March 1, 2017	MPLX	F	586	$37.87	$22,192	6,947 Direct	-7.78%	Disposed	54.7% (price as of 2026-08-21)
March 1, 2017	MPLX	F	114	$37.87	$4,317	7,533 Direct	-1.49%	Disposed	54.7% (price as of 2026-08-21)
March 1, 2017	MPLX	F	96	$37.87	$3,636	7,647 Direct	-1.24%	Disposed	54.7% (price as of 2026-08-21)
Feb. 21, 2017	MPC	M	17,136	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 21, 2017	MPC	S	17,136	$50.48	$865,025	46,570 Direct	-26.90%	Disposed	618.7% (price as of 2026-08-21)
Feb. 21, 2017	MPC	M	17,136	$25.88	$443,480	63,706 Direct	+36.80%	Acquired	1301.8% (price as of 2026-08-21)
Feb. 1, 2017	MPC	A	827	—	—	46,570 Direct	+1.81%	Acquired	(price as of 2026-08-21)
Feb. 1, 2017	MPLX	A	60	—	—	7,743 Direct	+0.78%	Acquired	(price as of 2026-08-21)
March 1, 2016	MPC	F	282	$34.44	$9,712	41,413 Direct	-0.68%	Disposed	953.4% (price as of 2026-08-21)
March 1, 2016	MPC	F	291	$34.44	$10,022	41,122 Direct	-0.70%	Disposed	953.4% (price as of 2026-08-21)
March 1, 2016	MPC	A	4,621	—	—	45,743 Direct	+11.24%	Acquired	(price as of 2026-08-21)
March 1, 2016	MPC	A	32,097	—	—	32,097 Direct	—	Acquired	(price as of 2026-08-21)
March 1, 2016	MPLX	A	3,770	—	—	7,683 Direct	+96.35%	Acquired	(price as of 2026-08-21)
March 1, 2016	MPLX	F	80	$26.04	$2,083	3,913 Direct	-2.00%	Disposed	125.0% (price as of 2026-08-21)
March 1, 2016	MPLX	F	67	$26.04	$1,745	3,993 Direct	-1.65%	Disposed	125.0% (price as of 2026-08-21)
Feb. 29, 2016	MPLX	F	100	$25.83	$2,583	4,060 Direct	-2.40%	Disposed	126.8% (price as of 2026-08-21)
Feb. 29, 2016	MPC	F	285	$34.54	$9,844	41,695 Direct	-0.68%	Disposed	950.4% (price as of 2026-08-21)
Feb. 1, 2016	MPC	A	1,236	—	—	41,980 Direct	+3.03%	Acquired	(price as of 2026-08-21)
Feb. 1, 2016	MPLX	A	185	—	—	4,160 Direct	+4.65%	Acquired	(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.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
March 1, 2017	MPC	Stock Option (right to buy)	Common Stock (14,045)	$50.99	March 1, 2027	14,045	Acquired
Feb. 21, 2017	MPC	Stock Option (right to buy)	Common Stock	$25.88	May 30, 2017	17,136	Disposed
March 1, 2016	MPC	Stock Option (right to buy)	Common Stock (32,097)	$34.63	March 1, 2026	32,097	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 12 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
March 4, 2015	MPLX	Common Units (Limited Partner Interests)	3,975	Direct
March 4, 2015	MPC	Common Stock	20,372	Direct
March 4, 2015	MPC	Common Stock	1	Indirect
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (8,568)	8,568	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (5,725)	5,725	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (8,649)	8,649	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (20,375)	20,375	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (4,233)	4,233	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (16,807)	16,807	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (8,305)	8,305	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (8,686)	8,686	Direct
March 4, 2015	MPC	Stock Option (right to buy)→ Common Stock (10,075)	10,075	Direct