Thomas Kaczynski

CIK 1651939 · View on SEC EDGAR ↗

Insider

First SEC filing: Dec. 10, 2020 · Latest: Dec. 10, 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 + 63 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

63 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 2, 2022	MPLX	F	173	$33.82	$5,851	18,091 Direct	-0.95%	Disposed	76.4% (price as of 2026-08-18)
Dec. 2, 2022	MPC	F	73	$118.23	$8,631	7,871 Direct	-0.92%	Disposed	205.0% (price as of 2026-08-18)
June 10, 2022	MPC	M	10,645	—	—	5,323 Direct	-66.66%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	M	10,879	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	M	8,291	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	M	12,360	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	M	17,653	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	M	9,008	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	15,000	$109.27	$1,639,050	7,944 Direct	-65.38%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	10,645	$109.27	$1,163,179	22,944 Direct	-31.69%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	10,879	$109.27	$1,188,748	33,589 Direct	-24.46%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	8,291	$109.27	$905,958	44,468 Direct	-15.71%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	12,360	$109.27	$1,350,577	52,759 Direct	-18.98%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	17,653	$109.27	$1,928,943	65,119 Direct	-21.33%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	S 10b5-1	9,008	$109.27	$984,304	82,772 Direct	-9.81%	Disposed	230.0% (price as of 2026-08-18)
June 10, 2022	MPC	M	10,645	$47.73	$508,086	91,780 Direct	+13.12%	Acquired	655.6% (price as of 2026-08-18)
June 10, 2022	MPC	M	10,879	$62.68	$681,896	81,135 Direct	+15.48%	Acquired	475.4% (price as of 2026-08-18)
June 10, 2022	MPC	M	8,291	$64.79	$537,174	70,256 Direct	+13.38%	Acquired	456.6% (price as of 2026-08-18)
June 10, 2022	MPC	M	12,360	$50.99	$630,236	61,965 Direct	+24.92%	Acquired	607.3% (price as of 2026-08-18)
June 10, 2022	MPC	M	17,653	$34.63	$611,323	49,605 Direct	+55.25%	Acquired	941.4% (price as of 2026-08-18)
June 10, 2022	MPC	M	9,008	$46.06	$414,908	31,952 Direct	+39.26%	Acquired	683.0% (price as of 2026-08-18)
March 1, 2022	MPC	F	220	$76.84	$16,905	21,265 Direct	-1.02%	Disposed	369.3% (price as of 2026-08-18)
March 1, 2022	MPC	A	1,679	—	—	22,944 Direct	+7.90%	Acquired	(price as of 2026-08-18)
March 1, 2022	MPC	F	210	$76.84	$16,136	21,485 Direct	-0.97%	Disposed	369.3% (price as of 2026-08-18)
March 1, 2022	MPLX	A	3,976	—	—	18,264 Direct	+27.83%	Acquired	(price as of 2026-08-18)
March 1, 2022	MPLX	F	461	$32.63	$15,042	14,288 Direct	-3.13%	Disposed	82.9% (price as of 2026-08-18)
March 1, 2022	MPLX	F	312	$32.63	$10,181	14,749 Direct	-2.07%	Disposed	82.9% (price as of 2026-08-18)
March 1, 2022	MPLX	F	167	$32.63	$5,449	15,061 Direct	-1.10%	Disposed	82.9% (price as of 2026-08-18)
Jan. 27, 2022	MPC	A	925	—	—	21,695 Direct	+4.45%	Acquired	(price as of 2026-08-18)
Jan. 25, 2022	MPLX	A	490	—	—	15,228 Direct	+3.32%	Acquired	(price as of 2026-08-18)
Nov. 19, 2021	MPLX	F	173	$29.68	$5,135	14,738 Direct	-1.16%	Disposed	101.0% (price as of 2026-08-18)
Nov. 19, 2021	MPC	F	82	$60.28	$4,943	20,770 Direct	-0.39%	Disposed	498.3% (price as of 2026-08-18)
March 1, 2021	MPLX	A	5,384	—	—	14,911 Direct	+56.51%	Acquired	(price as of 2026-08-18)
March 1, 2021	MPLX	F	312	$24.59	$7,672	9,527 Direct	-3.17%	Disposed	142.7% (price as of 2026-08-18)
March 1, 2021	MPLX	F	167	$24.59	$4,107	9,839 Direct	-1.67%	Disposed	142.7% (price as of 2026-08-18)
March 1, 2021	MPLX	F	146	$24.59	$3,590	10,006 Direct	-1.44%	Disposed	142.7% (price as of 2026-08-18)
March 1, 2021	MPC	A	2,563	—	—	20,852 Direct	+14.01%	Acquired	(price as of 2026-08-18)
March 1, 2021	MPC	F	210	$55.88	$11,735	18,289 Direct	-1.14%	Disposed	545.4% (price as of 2026-08-18)
Jan. 29, 2021	MPC	A	981	—	—	18,499 Direct	+5.60%	Acquired	(price as of 2026-08-18)
Jan. 28, 2021	MPLX	A	513	—	—	10,152 Direct	+5.32%	Acquired	(price as of 2026-08-18)
Dec. 28, 2020	MPC	F	486	$40.78	$19,819	17,518 Direct	-2.70%	Disposed	784.3% (price as of 2026-08-18)
Dec. 28, 2020	MPC	F	217	$40.78	$8,849	18,004 Direct	-1.19%	Disposed	784.3% (price as of 2026-08-18)
Dec. 28, 2020	MPLX	F	53	$21.50	$1,140	9,639 Direct	-0.55%	Disposed	177.5% (price as of 2026-08-18)
Dec. 28, 2020	MPLX	F	24	$21.50	$516	9,692 Direct	-0.25%	Disposed	177.5% (price as of 2026-08-18)
March 2, 2020	MPC	A	15,968	—	—	15,968 Direct	—	Acquired	(price as of 2026-08-18)
March 2, 2020	MPC	A	2,179	—	—	18,221 Direct	+13.58%	Acquired	(price as of 2026-08-18)
March 2, 2020	MPC	F	160	$46.95	$7,512	16,042 Direct	-0.99%	Disposed	668.1% (price as of 2026-08-18)
March 2, 2020	MPC	F	143	$46.95	$6,714	16,202 Direct	-0.87%	Disposed	668.1% (price as of 2026-08-18)
March 2, 2020	MPC	F	167	$46.95	$7,841	16,345 Direct	-1.01%	Disposed	668.1% (price as of 2026-08-18)
Jan. 27, 2020	MPC	A	657	—	—	16,512 Direct	+4.14%	Acquired	(price as of 2026-08-18)
March 1, 2019	MPC	A	10,879	—	—	10,879 Direct	—	Acquired	(price as of 2026-08-18)
March 1, 2019	MPC	A	1,660	—	—	15,855 Direct	+11.69%	Acquired	(price as of 2026-08-18)
March 1, 2019	MPC	F	143	$62.66	$8,960	14,195 Direct	-1.00%	Disposed	475.5% (price as of 2026-08-18)
March 1, 2019	MPC	F	166	$62.66	$10,402	14,338 Direct	-1.14%	Disposed	475.5% (price as of 2026-08-18)
March 1, 2019	MPC	F	245	$62.66	$15,352	14,504 Direct	-1.66%	Disposed	475.5% (price as of 2026-08-18)
Jan. 28, 2019	MPC	A	567	—	—	14,749 Direct	+4.00%	Acquired	(price as of 2026-08-18)
Sept. 4, 2018	MPC	F	1,281	$83.84	$107,399	14,182 Direct	-8.28%	Disposed	330.1% (price as of 2026-08-18)
March 1, 2018	MPC	F	284	$64.86	$18,420	14,142 Direct	-1.97%	Disposed	456.0% (price as of 2026-08-18)
March 1, 2018	MPC	F	161	$64.86	$10,442	13,981 Direct	-1.14%	Disposed	456.0% (price as of 2026-08-18)
March 1, 2018	MPC	A	1,482	—	—	15,463 Direct	+10.60%	Acquired	(price as of 2026-08-18)
March 1, 2018	MPC	A	8,291	—	—	8,291 Direct	—	Acquired	(price as of 2026-08-18)
Sept. 1, 2017	MPC	F	1,413	$53.41	$75,468	14,426 Direct	-8.92%	Disposed	575.2% (price as of 2026-08-18)
March 1, 2017	MPC	F	315	$50.74	$15,983	14,113 Direct	-2.18%	Disposed	610.8% (price as of 2026-08-18)
March 1, 2017	MPC	A	1,726	—	—	15,839 Direct	+12.23%	Acquired	(price as of 2026-08-18)
March 1, 2017	MPC	A	12,360	—	—	12,360 Direct	—	Acquired	(price as of 2026-08-18)
Sept. 1, 2016	MPC	F	1,413	$41.99	$59,332	14,428 Direct	-8.92%	Disposed	758.9% (price as of 2026-08-18)
March 1, 2016	MPC	A	17,653	—	—	17,653 Direct	—	Acquired	(price as of 2026-08-18)
March 1, 2016	MPC	A	2,542	—	—	15,841 Direct	+19.11%	Acquired	(price as of 2026-08-18)
Sept. 1, 2015	MPC	A	9,008	—	—	9,008 Direct	—	Acquired	(price as of 2026-08-18)
Sept. 1, 2015	MPC	A	13,299	—	—	13,299 Direct	—	Acquired	(price as of 2026-08-18)

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
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (10,645)	$47.73	March 1, 2030	10,645	Disposed
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (10,879)	$62.68	March 1, 2029	10,879	Disposed
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (8,291)	$64.79	March 1, 2028	8,291	Disposed
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (12,360)	$50.99	March 1, 2027	12,360	Disposed
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (17,653)	$34.63	March 1, 2026	17,653	Disposed
June 10, 2022	MPC	Employee Stock Option (right to buy)	Common Stock (9,008)	$46.06	Sept. 1, 2025	9,008	Disposed
March 2, 2020	MPC	Employee Stock Option (right to buy)	Common Stock (15,968)	$47.73	March 1, 2030	15,968	Acquired
March 1, 2019	MPC	Stock Option (right to buy)	Common Stock (10,879)	$62.68	March 1, 2029	10,879	Acquired
March 1, 2018	MPC	Stock Option (right to buy)	Common Stock (8,291)	$64.79	March 1, 2028	8,291	Acquired
March 1, 2017	MPC	Stock Option (right to buy)	Common Stock (12,360)	$50.99	March 1, 2027	12,360	Acquired
March 1, 2016	MPC	Stock Option (right to buy)	Common Stock (17,653)	$34.63	March 1, 2026	17,653	Acquired
Sept. 1, 2015	MPC	Stock Option (right to buy)	Common Stock (9,008)	$46.06	Sept. 1, 2025	9,008	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Dec. 10, 2020	MPLX	Common Units (Limited Partner Interests)	9,716	Direct