Thomas P Mason

Insider

First SEC filing: Dec. 28, 2015 · Latest: Dec. 28, 2015

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

ET buying Nov. 13, 2023

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 22 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

22 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 8, 2023	ET	A	62,500	—	—	153,375 Direct	+68.78%	Acquired	(price as of 2026-08-20)
Dec. 8, 2023	ET	A	187,500	—	—	1,817,753 Direct	+11.50%	Acquired	(price as of 2026-08-20)
Dec. 5, 2023	ET	F	85,467	$13.74	$1,174,317	1,630,253 Direct	-4.98%	Disposed	54.5% (price as of 2026-08-20)
Nov. 13, 2023	ET	P	8,000	$13.17	$105,360	1,715,720 Direct	+0.47%	Acquired	61.2% (price as of 2026-08-20)
Nov. 7, 2023	ET	P	7,500	$13.33	$99,975	1,707,720 Direct	+0.44%	Acquired	59.3% (price as of 2026-08-20)
Dec. 12, 2022	ET	A	86,262	—	—	153,660 Direct	+127.99%	Acquired	(price as of 2026-08-20)
Dec. 12, 2022	ET	A	258,788	—	—	1,700,220 Direct	+17.95%	Acquired	(price as of 2026-08-20)
Dec. 5, 2022	ET	M	54,120	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 5, 2022	ET	F	72,012	$12.37	$890,788	1,441,432 Direct	-4.76%	Disposed	71.6% (price as of 2026-08-20)
Dec. 5, 2022	ET	M	54,120	—	—	1,513,444 Direct	+3.71%	Acquired	(price as of 2026-08-20)
Dec. 16, 2021	ET	A	100,100	—	—	100,100 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 16, 2021	ET	A	300,300	—	—	1,460,699 Direct	+25.88%	Acquired	(price as of 2026-08-20)
Dec. 5, 2021	ET	F	61,006	$8.61	$525,262	1,160,399 Direct	-4.99%	Disposed	146.6% (price as of 2026-08-20)
Dec. 30, 2020	ET	A	234,900	—	—	234,900 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 30, 2020	ET	A	234,900	—	—	1,232,079 Direct	+23.56%	Acquired	(price as of 2026-08-20)
Dec. 4, 2020	ET	M	81,180	—	—	54,120 Direct	-60.00%	Disposed	(price as of 2026-08-20)
Dec. 4, 2020	ET	F	45,198	$6.34	$286,555	997,179 Direct	-4.34%	Disposed	234.9% (price as of 2026-08-20)
Dec. 4, 2020	ET	M	81,180	—	—	1,042,377 Direct	+8.45%	Acquired	(price as of 2026-08-20)
March 13, 2020	ET	S	128,000	$6.23	$797,440	961,197 Direct	-11.75%	Disposed	240.8% (price as of 2026-08-20)
Dec. 16, 2019	ET	A	214,800	—	—	1,089,197 Direct	+24.57%	Acquired	(price as of 2026-08-20)
Dec. 5, 2019	ET	F	33,567	$11.76	$394,748	874,397 Direct	-3.70%	Disposed	80.5% (price as of 2026-08-20)
June 17, 2019	ET	S	75,000	$13.97	$1,047,750	907,964 Direct	-7.63%	Disposed	52.0% (price as of 2026-08-20)
Dec. 18, 2018	ET	A	190,640	—	—	741,392 Direct	+34.61%	Acquired	(price as of 2026-08-20)
Dec. 5, 2018	ET	F	32,248	$14.55	$469,208	550,752 Direct	-5.53%	Disposed	45.9% (price as of 2026-08-20)
Dec. 20, 2017	ET	A	135,300	—	—	135,300 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 8, 2016	ET	J	477,000	$18.49	$8,819,730	583,000 Direct	-45.00%	Disposed	14.8% (price as of 2026-08-20)
Jan. 14, 2016	ET	P	1,000,000	$0.37	$370,000	1,000,000 Direct	—	Acquired	5637.8% (price as of 2026-08-20)

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
Dec. 8, 2023	ET	Cash Units	Common Units (62,500)	—	—	62,500	Acquired
Dec. 12, 2022	ET	Cash Units	Common Units (86,262)	—	—	86,262	Acquired
Dec. 5, 2022	ET	Phantom Units	Common Units (54,120)	$0.00	Dec. 5, 2022	54,120	Disposed
Dec. 16, 2021	ET	Cash Units	Common Units (100,100)	—	—	100,100	Acquired
Dec. 30, 2020	ET	Cash Units	Common Units (234,900)	—	—	234,900	Acquired
Dec. 4, 2020	ET	Phantom Units	Common Units (81,180)	—	—	81,180	Disposed
Dec. 20, 2017	ET	Phantom Units	Common Units [F1] (135,300)	—	—	135,300	Acquired
Jan. 14, 2016	ET	Put Option (Right to Sell)	Common Units (1,000,000)	$5.00	Feb. 16, 2016	1,000,000	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. 28, 2015	ET	Common Units	1,060,000	Direct