Peter A Vaughn

Insider

First SEC filing: Oct. 8, 2025 · Latest: Oct. 8, 2025

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.

Insider at

MTN selling Dec. 16, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 43 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

43 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Oct. 6, 2025	MTN	G	70	—	—	8,784 Direct	-0.79%	Disposed	(price as of 2026-08-20)
Sept. 30, 2025	MTN	A	1,563	—	—	1,563 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 27, 2025	MTN	M	1,281	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2025	MTN	M	1,281	—	—	8,854 Direct	+16.92%	Acquired	(price as of 2026-08-20)
Dec. 16, 2024	MTN	S	78	$192.61	$15,024	7,573 Direct	-1.02%	Disposed	-20.5% (price as of 2026-08-20)
Dec. 16, 2024	MTN	S	922	$191.95	$176,978	7,651 Direct	-10.75%	Disposed	-20.2% (price as of 2026-08-20)
Sept. 29, 2024	MTN	M	1,031	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 29, 2024	MTN	M	1,031	—	—	8,573 Direct	+13.67%	Acquired	(price as of 2026-08-20)
Sept. 27, 2024	MTN	A	1,281	—	—	1,281 Direct	—	Acquired	(price as of 2026-08-20)
June 12, 2024	MTN	G	50	—	—	7,542 Direct	-0.66%	Disposed	(price as of 2026-08-20)
March 13, 2024	MTN	S	1,000	$222.77	$222,770	7,592 Direct	-11.64%	Disposed	-31.2% (price as of 2026-08-20)
March 13, 2024	MTN	S	1,000	$222.77	$222,770	7,592 Direct	-11.64%	Disposed	-31.2% (price as of 2026-08-20)
Sept. 29, 2023	MTN	A	1,031	—	—	1,031 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 29, 2023	MTN	M	1,071	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 29, 2023	MTN	M	1,071	—	—	8,592 Direct	+14.24%	Acquired	(price as of 2026-08-20)
Sept. 29, 2022	MTN	A	1,071	—	—	1,071 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 24, 2022	MTN	M	599	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 24, 2022	MTN	M	599	—	—	7,521 Direct	+8.65%	Acquired	(price as of 2026-08-20)
Sept. 29, 2021	MTN	S	975	$343.77	$335,176	6,922 Direct	-12.35%	Disposed	-55.4% (price as of 2026-08-20)
Sept. 25, 2021	MTN	M	922	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 25, 2021	MTN	M	922	—	—	7,897 Direct	+13.22%	Acquired	(price as of 2026-08-20)
Sept. 24, 2021	MTN	A	599	—	—	599 Direct	—	Acquired	(price as of 2026-08-20)
June 15, 2021	MTN	S	1,000	$321.93	$321,930	7,025 Direct	-12.46%	Disposed	-52.4% (price as of 2026-08-20)
Oct. 6, 2020	MTN	S	1,000	$231.45	$231,450	8,025 Direct	-11.08%	Disposed	-33.8% (price as of 2026-08-20)
Sept. 25, 2020	MTN	M	910	—	—	9,025 Direct	+11.21%	Acquired	(price as of 2026-08-20)
Sept. 25, 2020	MTN	A	922	—	—	922 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 25, 2020	MTN	M	910	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Oct. 10, 2019	MTN	S	500	$226.63	$113,315	8,115 Direct	-5.80%	Disposed	-32.4% (price as of 2026-08-20)
Oct. 8, 2019	MTN	S	500	$224.09	$112,045	8,615 Direct	-5.49%	Disposed	-31.6% (price as of 2026-08-20)
Sept. 27, 2019	MTN	M	743	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2019	MTN	M	743	—	—	9,115 Direct	+8.87%	Acquired	(price as of 2026-08-20)
Sept. 25, 2019	MTN	A	910	—	—	910 Direct	—	Acquired	(price as of 2026-08-20)
March 18, 2019	MTN	S	1,000	$216.47	$216,470	8,372 Direct	-10.67%	Disposed	-29.2% (price as of 2026-08-20)
Oct. 4, 2018	MTN	S	400	$254.59	$101,836	9,372 Direct	-4.09%	Disposed	-39.8% (price as of 2026-08-20)
Sept. 27, 2018	MTN	A	743	—	—	743 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 27, 2018	MTN	M	900	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 27, 2018	MTN	M	900	—	—	9,279 Direct	+10.74%	Acquired	(price as of 2026-08-20)
Sept. 27, 2017	MTN	A	900	—	—	900 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 23, 2017	MTN	M	1,234	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 23, 2017	MTN	M	1,234	—	—	8,379 Direct	+17.27%	Acquired	(price as of 2026-08-20)
Sept. 25, 2016	MTN	M	1,788	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 25, 2016	MTN	M	1,788	—	—	7,145 Direct	+33.38%	Acquired	(price as of 2026-08-20)
Sept. 23, 2016	MTN	A	1,234	—	—	1,234 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 25, 2015	MTN	A	1,788	—	—	1,788 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 23, 2015	MTN	M	2,119	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 23, 2015	MTN	M	2,119	—	—	5,357 Direct	+65.44%	Acquired	(price as of 2026-08-20)
Sept. 26, 2014	MTN	M	669	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 26, 2014	MTN	M	2,569	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 26, 2014	MTN	M	669	—	—	3,238 Direct	+26.04%	Acquired	(price as of 2026-08-20)
Sept. 26, 2014	MTN	M	2,569	—	—	2,569 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 23, 2014	MTN	A	2,119	—	—	2,119 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 23, 2014	MTN	A	2,169	—	—	2,169 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 14, 2013	MTN	A	669	—	—	3,238 Direct	+26.04%	Acquired	(price as of 2026-08-20)
Sept. 26, 2013	MTN	A	2,569	—	—	2,569 Direct	—	Acquired	(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
Sept. 30, 2025	MTN	Restricted Share Unit	Common Stock (1,563)	$0.00	—	1,563	Acquired
Sept. 27, 2025	MTN	Restricted Share Unit	Common Stock (1,281)	$0.00	—	1,281	Disposed
Sept. 29, 2024	MTN	Restricted Share Unit	Common Stock (1,031)	$0.00	—	1,031	Disposed
Sept. 27, 2024	MTN	Restricted Share Unit	Common Stock (1,281)	$0.00	—	1,281	Acquired
Sept. 29, 2023	MTN	Restricted Share Unit	Common Stock (1,031)	$0.00	—	1,031	Acquired
Sept. 29, 2023	MTN	Restricted Share Unit	Common Stock (1,071)	$0.00	—	1,071	Disposed
Sept. 29, 2022	MTN	Restricted Share Unit	Common Stock (1,071)	$0.00	—	1,071	Acquired
Sept. 24, 2022	MTN	Restricted Share Unit	Common Stock (599)	$0.00	—	599	Disposed
Sept. 25, 2021	MTN	Restricted Share Unit	Common Stock (922)	$0.00	—	922	Disposed
Sept. 24, 2021	MTN	Restricted Share Unit	Common Stock (599)	$0.00	—	599	Acquired
Sept. 25, 2020	MTN	Restricted Share Unit	Common Stock (922)	$0.00	—	922	Acquired
Sept. 25, 2020	MTN	Restricted Share Unit	Common Stock (910)	$0.00	—	910	Disposed
Sept. 27, 2019	MTN	Restricted Share Unit	Common Stock (743)	$0.00	—	743	Disposed
Sept. 25, 2019	MTN	Restricted Share Unit	Common Stock (910)	$0.00	—	910	Acquired
Sept. 27, 2018	MTN	Restricted Share Unit	Common Stock (743)	$0.00	—	743	Acquired
Sept. 27, 2018	MTN	Restricted Share Unit	Common Stock (900)	$0.00	—	900	Disposed
Sept. 27, 2017	MTN	Restricted Share Unit	Common Stock (900)	$0.00	—	900	Acquired
Sept. 23, 2017	MTN	Restricted Share Unit	Common Stock (1,234)	$0.00	—	1,234	Disposed
Sept. 25, 2016	MTN	Restricted Share Unit	Common Stock (1,788)	$0.00	—	1,788	Disposed
Sept. 23, 2016	MTN	Restricted Share Unit	Common Stock (1,234)	$0.00	—	1,234	Acquired
Sept. 25, 2015	MTN	Restricted Share Unit	Common Stock (1,788)	$0.00	—	1,788	Acquired
Sept. 23, 2015	MTN	Restricted Share Unit	Common Stock (2,119)	$0.00	—	2,119	Disposed
Sept. 26, 2014	MTN	Restricted Share Unit	Common Stock (669)	$0.00	—	669	Disposed
Sept. 26, 2014	MTN	Restricted Share Unit	Common Stock (2,569)	$0.00	—	2,569	Disposed
Sept. 23, 2014	MTN	Restricted Share Unit	Common Stock (2,119)	$0.00	—	2,119	Acquired
Sept. 23, 2014	MTN	Restricted Share Unit	Common Stock (2,169)	$0.00	—	2,169	Acquired
Oct. 14, 2013	MTN	Restricted Share Unit	Common Stock (669)	$0.00	—	669	Acquired
Sept. 26, 2013	MTN	Restricted Share Unit	Common Stock (2,569)	$0.00	—	2,569	Acquired

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