Richard A Sampson

Insider

First SEC filing: Feb. 5, 2026 · Latest: Feb. 5, 2026

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

ATO buying Dec. 10, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 25 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

25 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 4, 2026	ATO	C	685	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 4, 2026	ATO	C	30,808	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 4, 2026	ATO	C	685	$171.62	$117,560	41,767 Direct	+1.67%	Acquired	0.2% (price as of 2026-08-20)
Feb. 4, 2026	ATO	C	30,808	$171.62	$5,287,269	41,082 Direct	+299.86%	Acquired	0.2% (price as of 2026-08-20)
March 7, 2025	ATO	A	1,083	$147.75	$160,013	30,124 Direct	+3.73%	Acquired	16.4% (price as of 2026-08-20)
March 8, 2024	ATO	A	1,294	$115.96	$150,052	28,303 Direct	+4.79%	Acquired	48.3% (price as of 2026-08-20)
March 8, 2024	ATO	M	1,367	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 8, 2024	ATO	M	1,367	$115.96	$158,517	10,230 Direct	+15.42%	Acquired	48.3% (price as of 2026-08-20)
March 10, 2023	ATO	A	1,367	$109.72	$149,987	1,367 Direct	—	Acquired	56.8% (price as of 2026-08-20)
March 11, 2022	ATO	A	1,323	$113.40	$150,028	25,835 Direct	+5.40%	Acquired	51.7% (price as of 2026-08-20)
Oct. 1, 2021	ATO	A	162	$88.53	$14,342	615 Direct	+35.76%	Acquired	94.3% (price as of 2026-08-20)
July 1, 2021	ATO	A	149	$96.54	$14,384	450 Direct	+49.50%	Acquired	78.2% (price as of 2026-08-20)
April 1, 2021	ATO	A	147	$97.97	$14,402	299 Direct	+96.71%	Acquired	75.6% (price as of 2026-08-20)
March 6, 2021	ATO	M	1,375	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 6, 2021	ATO	M	1,375	$90.79	$124,836	8,493 Direct	+19.32%	Acquired	89.5% (price as of 2026-08-20)
March 5, 2021	ATO	A	1,652	$90.79	$149,985	23,733 Direct	+7.48%	Acquired	89.5% (price as of 2026-08-20)
Jan. 4, 2021	ATO	A	152	$94.81	$14,411	152 Direct	—	Acquired	81.4% (price as of 2026-08-20)
Dec. 10, 2020	ATO	P	500	$97.41	$48,705	7,076 Direct	+7.60%	Acquired	76.6% (price as of 2026-08-20)
Aug. 18, 2020	ATO	P	500	$103.00	$51,500	6,500 Direct	+8.33%	Acquired	67.0% (price as of 2026-08-20)
June 11, 2020	ATO	P	1,000	$99.75	$99,750	6,000 Direct	+20.00%	Acquired	72.4% (price as of 2026-08-20)
June 11, 2020	ATO	P	1,000	$100.00	$100,000	5,000 Direct	+25.00%	Acquired	72.0% (price as of 2026-08-20)
May 11, 2020	ATO	P	1,000	$95.47	$95,470	4,000 Direct	+33.33%	Acquired	80.2% (price as of 2026-08-20)
March 6, 2020	ATO	A	1,375	$109.09	$149,999	1,375 Direct	—	Acquired	57.7% (price as of 2026-08-20)
March 8, 2019	ATO	A	1,504	$99.73	$149,994	21,131 Direct	+7.66%	Acquired	72.5% (price as of 2026-08-20)
March 9, 2018	ATO	A	3,000	$79.80	$239,400	19,200 Direct	+18.52%	Acquired	115.5% (price as of 2026-08-20)
Aug. 15, 2017	ATO	P	1,500	$88.12	$132,180	3,000 Direct	+100.00%	Acquired	95.2% (price as of 2026-08-20)
March 10, 2017	ATO	A	3,000	$77.19	$231,570	15,856 Direct	+23.34%	Acquired	122.8% (price as of 2026-08-20)
March 4, 2016	ATO	A	3,000	$70.11	$210,330	12,560 Direct	+31.38%	Acquired	145.3% (price as of 2026-08-20)
March 6, 2015	ATO	A	3,000	$52.43	$157,290	9,287 Direct	+47.72%	Acquired	228.1% (price as of 2026-08-20)
March 7, 2014	ATO	A	3,000	—	—	6,103 Direct	+96.68%	Acquired	(price as of 2026-08-20)
March 15, 2013	ATO	A	3,000	—	—	3,000 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
Feb. 4, 2026	ATO	Phantom Deferred Compensation	Common Stock (685)	—	—	685	Disposed
Feb. 4, 2026	ATO	Phantom Stock Units	Common Stock (30,808)	—	—	30,808	Disposed
March 7, 2025	ATO	Phantom Stock Units	Common Stock (1,083)	—	—	1,083	Acquired
March 8, 2024	ATO	Phantom Stock Units	Common Stock (1,294)	—	—	1,294	Acquired
March 8, 2024	ATO	Restricted Stock Unit	Common Stock (1,367)	—	—	1,367	Disposed
March 10, 2023	ATO	Restricted Stock Unit	Common Stock (1,367)	—	—	1,367	Acquired
March 11, 2022	ATO	Phantom Stock Units	Common Stock (1,323)	—	—	1,323	Acquired
Oct. 1, 2021	ATO	Phantom Deferred Compensation	Common Stock (162)	—	—	162	Acquired
July 1, 2021	ATO	Phantom Deferred Compensation	Common Stock (149)	—	—	149	Acquired
April 1, 2021	ATO	Phantom Deferred Compensation	Common Stock (147)	—	—	147	Acquired
March 6, 2021	ATO	Restricted Stock Unit	Common Stock (1,375)	—	—	1,375	Disposed
March 5, 2021	ATO	Phantom Stock Units	Common Stock (1,652)	—	—	1,652	Acquired
Jan. 4, 2021	ATO	Phantom Deferred Compensation	Common Stock (152)	—	—	152	Acquired
March 6, 2020	ATO	Restricted Stock Unit	Common Stock (1,375)	—	—	1,375	Acquired
March 8, 2019	ATO	Phantom Stock Units	Common Stock (1,504)	—	—	1,504	Acquired
March 9, 2018	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
March 10, 2017	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
March 4, 2016	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
March 6, 2015	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
March 7, 2014	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
March 15, 2013	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	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
May 2, 2012	ATO	Common Stock	1,500	Direct