Robert W Best

Insider

First SEC filing: Nov. 8, 2018 · Latest: Nov. 12, 2019

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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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

ATO selling Aug. 14, 2012

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 90 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

90 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 5, 2021	ATO	A	1,652	$90.79	$149,985	25,093 Direct	+7.05%	Acquired	89.5% (price as of 2026-08-20)
Dec. 8, 2020	ATO	G	29,298	—	—	592,425 Direct	-4.71%	Disposed	(price as of 2026-08-20)
March 6, 2020	ATO	A	1,375	$109.09	$149,999	22,914 Direct	+6.38%	Acquired	57.7% (price as of 2026-08-20)
March 8, 2019	ATO	A	1,504	$99.73	$149,994	21,101 Direct	+7.67%	Acquired	72.5% (price as of 2026-08-20)
March 9, 2018	ATO	A	3,000	$79.80	$239,400	19,171 Direct	+18.55%	Acquired	115.5% (price as of 2026-08-20)
March 10, 2017	ATO	A	3,000	$77.19	$231,570	15,828 Direct	+23.39%	Acquired	122.8% (price as of 2026-08-20)
Nov. 4, 2016	ATO	M	11,309	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 4, 2016	ATO	F	2,828	$71.66	$202,654	557,672 Direct	-0.50%	Disposed	140.0% (price as of 2026-08-20)
Nov. 4, 2016	ATO	M	11,309	—	—	560,500 Direct	+2.06%	Acquired	(price as of 2026-08-20)
March 4, 2016	ATO	A	3,000	$70.11	$210,330	12,533 Direct	+31.47%	Acquired	145.3% (price as of 2026-08-20)
Nov. 6, 2015	ATO	M	20,034	—	—	11,309 Direct	-63.92%	Disposed	(price as of 2026-08-20)
Nov. 6, 2015	ATO	F	7,935	$60.85	$482,845	549,191 Direct	-1.42%	Disposed	182.7% (price as of 2026-08-20)
Nov. 6, 2015	ATO	M	20,034	—	—	557,126 Direct	+3.73%	Acquired	(price as of 2026-08-20)
May 1, 2015	ATO	M	21,700	—	—	31,343 Direct	-40.91%	Disposed	(price as of 2026-08-20)
May 1, 2015	ATO	F	5,955	$54.19	$322,701	537,092 Direct	-1.10%	Disposed	217.4% (price as of 2026-08-20)
May 1, 2015	ATO	M	21,700	$54.19	$1,175,923	543,047 Direct	+4.16%	Acquired	217.4% (price as of 2026-08-20)
March 6, 2015	ATO	A	3,000	$52.43	$157,290	9,260 Direct	+47.92%	Acquired	228.1% (price as of 2026-08-20)
Nov. 8, 2014	ATO	M	25,648	—	—	53,043 Direct	-32.59%	Disposed	(price as of 2026-08-20)
Nov. 8, 2014	ATO	F	10,158	$54.25	$551,072	521,347 Direct	-1.91%	Disposed	217.1% (price as of 2026-08-20)
Nov. 8, 2014	ATO	M	25,648	—	—	531,505 Direct	+5.07%	Acquired	(price as of 2026-08-20)
Nov. 4, 2014	ATO	F	8,022	$53.55	$429,578	505,857 Direct	-1.56%	Disposed	221.2% (price as of 2026-08-20)
Nov. 4, 2014	ATO	M	19,106	—	—	513,879 Direct	+3.86%	Acquired	(price as of 2026-08-20)
May 3, 2014	ATO	M	23,100	—	—	78,691 Direct	-22.69%	Disposed	(price as of 2026-08-20)
May 3, 2014	ATO	F	6,383	$50.81	$324,320	494,773 Direct	-1.27%	Disposed	238.5% (price as of 2026-08-20)
May 3, 2014	ATO	M	23,100	$50.81	$1,173,711	501,156 Direct	+4.83%	Acquired	238.5% (price as of 2026-08-20)
March 7, 2014	ATO	A	3,000	—	—	6,077 Direct	+97.50%	Acquired	(price as of 2026-08-20)
Nov. 5, 2013	ATO	A	11,309	—	—	101,791 Direct	+12.50%	Acquired	(price as of 2026-08-20)
Nov. 5, 2013	ATO	F	11,818	$44.29	$523,419	478,056 Direct	-2.41%	Disposed	288.4% (price as of 2026-08-20)
Nov. 5, 2013	ATO	A	28,169	—	—	489,874 Direct	+6.10%	Acquired	(price as of 2026-08-20)
Nov. 2, 2013	ATO	M	8,895	—	—	90,482 Direct	-8.95%	Disposed	(price as of 2026-08-20)
Nov. 2, 2013	ATO	F	3,524	$44.43	$156,571	461,705 Direct	-0.76%	Disposed	287.1% (price as of 2026-08-20)
Nov. 2, 2013	ATO	M	8,895	—	—	465,229 Direct	+1.95%	Acquired	(price as of 2026-08-20)
Oct. 1, 2013	ATO	M	24,000	—	—	99,377 Direct	-19.45%	Disposed	(price as of 2026-08-20)
Oct. 1, 2013	ATO	F	9,504	$42.66	$405,441	456,334 Direct	-2.04%	Disposed	303.2% (price as of 2026-08-20)
Oct. 1, 2013	ATO	M	24,000	$42.66	$1,023,840	465,838 Direct	+5.43%	Acquired	303.2% (price as of 2026-08-20)
April 1, 2013	ATO	A	3,000	—	—	3,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 9, 2012	ATO	M	8,472	—	—	123,377 Direct	-6.43%	Disposed	(price as of 2026-08-20)
Nov. 9, 2012	ATO	F	2,966	$34.67	$102,831	437,548 Direct	-0.67%	Disposed	396.1% (price as of 2026-08-20)
Nov. 9, 2012	ATO	M	8,472	—	—	440,514 Direct	+1.96%	Acquired	(price as of 2026-08-20)
Nov. 6, 2012	ATO	A	20,034	$35.55	$712,209	131,849 Direct	+17.92%	Acquired	383.8% (price as of 2026-08-20)
Nov. 6, 2012	ATO	F	7,868	$35.55	$279,707	432,042 Direct	-1.79%	Disposed	383.8% (price as of 2026-08-20)
Nov. 6, 2012	ATO	A	21,585	—	—	439,910 Direct	+5.16%	Acquired	(price as of 2026-08-20)
Aug. 14, 2012	ATO	M	62,900	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 14, 2012	ATO	S	62,900	$36.77	$2,312,833	414,292 Direct	-13.18%	Disposed	367.8% (price as of 2026-08-20)
Aug. 14, 2012	ATO	M	62,900	$36.77	$2,312,833	477,192 Direct	+15.18%	Acquired	367.8% (price as of 2026-08-20)
May 4, 2012	ATO	C	28,000	—	—	111,815 Direct	-20.03%	Disposed	(price as of 2026-08-20)
May 4, 2012	ATO	C	28,000	—	—	410,290 Direct	+7.32%	Acquired	(price as of 2026-08-20)
May 4, 2012	ATO	F	7,000	$32.46	$227,220	382,290 Direct	-1.80%	Disposed	429.9% (price as of 2026-08-20)
May 4, 2012	ATO	F	7,406	$32.46	$240,399	381,884 Direct	-1.90%	Disposed	429.9% (price as of 2026-08-20)
May 1, 2012	ATO	A	21,700	—	—	139,815 Direct	+18.37%	Acquired	(price as of 2026-08-20)
Nov. 11, 2011	ATO	F	4,859	$35.07	$170,405	384,971 Direct	-1.25%	Disposed	390.5% (price as of 2026-08-20)
Nov. 8, 2011	ATO	A	25,648	$35.09	$899,988	118,115 Direct	+27.74%	Acquired	390.2% (price as of 2026-08-20)
Nov. 8, 2011	ATO	F	9,444	$35.09	$331,390	389,830 Direct	-2.37%	Disposed	390.2% (price as of 2026-08-20)
Nov. 8, 2011	ATO	A	25,912	—	—	399,274 Direct	+6.94%	Acquired	(price as of 2026-08-20)
May 3, 2011	ATO	A	23,100	—	—	92,467 Direct	+33.30%	Acquired	(price as of 2026-08-20)
April 29, 2011	ATO	F	6,877	$34.74	$238,907	373,154 Direct	-1.81%	Disposed	395.1% (price as of 2026-08-20)
Nov. 26, 2010	ATO	M	43,362	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 26, 2010	ATO	S	43,362	$30.23	$1,310,833	380,031 Direct	-10.24%	Disposed	469.0% (price as of 2026-08-20)
Nov. 26, 2010	ATO	M	43,362	—	—	423,393 Direct	+11.41%	Acquired	(price as of 2026-08-20)
Nov. 24, 2010	ATO	M	4,948	—	—	384,979 Direct	+1.30%	Acquired	(price as of 2026-08-20)
Nov. 24, 2010	ATO	S	4,948	$30.32	$150,023	380,031 Direct	-1.29%	Disposed	467.3% (price as of 2026-08-20)
Nov. 24, 2010	ATO	M	62,282	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 24, 2010	ATO	M	4,948	—	—	43,362 Direct	-10.24%	Disposed	(price as of 2026-08-20)
Nov. 24, 2010	ATO	S	62,282	$30.32	$1,888,390	380,031 Direct	-14.08%	Disposed	467.3% (price as of 2026-08-20)
Nov. 24, 2010	ATO	M	62,282	—	—	442,313 Direct	+16.39%	Acquired	(price as of 2026-08-20)
Nov. 10, 2010	ATO	M	35,610	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 10, 2010	ATO	S	35,610	$30.15	$1,073,642	380,031 Direct	-8.57%	Disposed	470.5% (price as of 2026-08-20)
Nov. 10, 2010	ATO	M	35,610	—	—	415,641 Direct	+9.37%	Acquired	(price as of 2026-08-20)
Nov. 9, 2010	ATO	M	64,390	—	—	35,610 Direct	-64.39%	Disposed	(price as of 2026-08-20)
Nov. 9, 2010	ATO	M	75,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 9, 2010	ATO	S	64,390	$30.17	$1,942,646	380,031 Direct	-14.49%	Disposed	470.1% (price as of 2026-08-20)
Nov. 9, 2010	ATO	M	64,390	—	—	444,421 Direct	+16.94%	Acquired	(price as of 2026-08-20)
Nov. 9, 2010	ATO	S	75,000	$30.17	$2,262,750	380,031 Direct	-16.48%	Disposed	470.1% (price as of 2026-08-20)
Nov. 9, 2010	ATO	M	75,000	—	—	455,031 Direct	+19.74%	Acquired	(price as of 2026-08-20)
Nov. 6, 2010	ATO	F	3,436	$30.36	$104,317	380,031 Direct	-0.90%	Disposed	466.6% (price as of 2026-08-20)
Nov. 2, 2010	ATO	A	8,895	$29.77	$264,804	69,367 Direct	+14.71%	Acquired	477.8% (price as of 2026-08-20)
Nov. 2, 2010	ATO	F	16,332	$29.77	$486,204	383,467 Direct	-4.09%	Disposed	477.8% (price as of 2026-08-20)
Nov. 2, 2010	ATO	A	44,809	—	—	399,799 Direct	+12.62%	Acquired	(price as of 2026-08-20)
May 4, 2010	ATO	A	24,000	—	—	60,472 Direct	+65.80%	Acquired	(price as of 2026-08-20)
May 1, 2010	ATO	F	6,877	$29.82	$205,072	354,990 Direct	-1.90%	Disposed	476.8% (price as of 2026-08-20)
Nov. 16, 2009	ATO	M	50,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 16, 2009	ATO	S	50,000	$28.64	$1,432,000	361,867 Direct	-12.14%	Disposed	500.6% (price as of 2026-08-20)
Nov. 16, 2009	ATO	M	50,000	$15.65	$782,500	411,867 Direct	+13.82%	Acquired	999.1% (price as of 2026-08-20)
Nov. 10, 2009	ATO	A	8,472	$29.08	$246,366	36,472 Direct	+30.26%	Acquired	491.5% (price as of 2026-08-20)
Nov. 10, 2009	ATO	F	13,737	$29.08	$399,472	361,867 Direct	-3.66%	Disposed	491.5% (price as of 2026-08-20)
Nov. 10, 2009	ATO	A	37,686	—	—	375,604 Direct	+11.15%	Acquired	(price as of 2026-08-20)
Nov. 6, 2009	ATO	D	2,916	$28.90	$84,272	337,918 Direct	-0.86%	Disposed	495.2% (price as of 2026-08-20)
May 9, 2009	ATO	F	8,177	$25.86	$211,457	340,834 Direct	-2.34%	Disposed	565.1% (price as of 2026-08-20)
May 5, 2009	ATO	A	28,000	—	—	28,000 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 11, 2008	ATO	F	16,355	$23.50	$384,342	349,011 Direct	-4.48%	Disposed	631.9% (price as of 2026-08-20)
Nov. 11, 2008	ATO	A	44,869	—	—	365,366 Direct	+14.00%	Acquired	(price as of 2026-08-20)
Nov. 11, 2008	ATO	A	13,328	$23.50	$313,208	320,497 Direct	+4.34%	Acquired	631.9% (price as of 2026-08-20)
Nov. 8, 2008	ATO	F	9,873	$23.58	$232,805	307,169 Direct	-3.11%	Disposed	629.5% (price as of 2026-08-20)
May 10, 2008	ATO	F	9,477	$27.77	$263,176	317,042 Direct	-2.90%	Disposed	519.4% (price as of 2026-08-20)
April 29, 2008	ATO	A	26,000	—	—	326,519 Direct	+8.65%	Acquired	(price as of 2026-08-20)
March 10, 2008	ATO	P	972	$25.73	$25,010	2,985 Indirect	+48.29%	Acquired	568.5% (price as of 2026-08-20)
Nov. 9, 2007	ATO	F	2,968	$26.69	$79,216	300,519 Direct	-0.98%	Disposed	544.5% (price as of 2026-08-20)
Nov. 6, 2007	ATO	A	9,428	$27.77	$261,816	303,487 Direct	+3.21%	Acquired	519.4% (price as of 2026-08-20)
Nov. 6, 2007	ATO	F	10,742	$27.77	$298,305	294,059 Direct	-3.52%	Disposed	519.4% (price as of 2026-08-20)
June 19, 2006	ATO	P	1,887	$26.50	$50,006	1,887 Indirect	—	Acquired	549.1% (price as of 2026-08-20)

Showing latest 100 of 117 transactions

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 5, 2021	ATO	Phantom Stock Units	Common Stock (1,652)	—	—	1,652	Acquired
March 6, 2020	ATO	Phantom Stock Units	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
Nov. 4, 2016	ATO	Restricted Stock Unit	Common Stock (11,309)	—	—	11,309	Disposed
March 4, 2016	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
Nov. 6, 2015	ATO	Restricted Stock Unit	Common Stock (20,034)	—	—	20,034	Disposed
May 1, 2015	ATO	Restricted Stock Unit	Common Stock (21,700)	—	—	21,700	Disposed
March 6, 2015	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
Nov. 8, 2014	ATO	Restricted Stock Unit	Common Stock (25,648)	—	—	25,648	Disposed
May 3, 2014	ATO	Restricted Stock Unit	Common Stock (23,100)	—	—	23,100	Disposed
March 7, 2014	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
Nov. 5, 2013	ATO	Restricted Stock Unit	Common Stock (11,309)	—	—	11,309	Acquired
Nov. 2, 2013	ATO	Restricted Stock Unit	Common Stock (8,895)	—	—	8,895	Disposed
Oct. 1, 2013	ATO	Restricted Stock Unit	Common Stock (24,000)	—	—	24,000	Disposed
April 1, 2013	ATO	Phantom Stock Units	Common Stock (3,000)	—	—	3,000	Acquired
Nov. 9, 2012	ATO	Restricted Stock Unit	Common Stock (8,472)	—	—	8,472	Disposed
Nov. 6, 2012	ATO	Restricted Stock Unit	Common Stock (20,034)	—	—	20,034	Acquired
Aug. 14, 2012	ATO	Employee Stock Option (Right to Buy)	Common Stock (62,900)	$21.23	March 10, 2013	62,900	Disposed
May 4, 2012	ATO	Restricted Stock Unit	Common Stock (28,000)	—	—	28,000	Disposed
May 1, 2012	ATO	Restricted Stock Unit	Common Stock (21,700)	—	—	21,700	Acquired
Nov. 8, 2011	ATO	Restricted Stock Unit	Common Stock (25,648)	—	—	25,648	Acquired
May 3, 2011	ATO	Restricted Stock Unit	Common Stock (23,100)	—	—	23,100	Acquired
Nov. 26, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (43,362)	$21.58	Nov. 11, 2012	43,362	Disposed
Nov. 24, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (62,282)	$21.30	Nov. 5, 2011	62,282	Disposed
Nov. 24, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (4,948)	$21.58	Nov. 11, 2012	4,948	Disposed
Nov. 10, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (35,610)	$22.68	March 6, 2012	35,610	Disposed
Nov. 9, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (64,390)	$22.68	March 6, 2012	64,390	Disposed
Nov. 9, 2010	ATO	Employee Stock Option (Right to Buy)	Common Stock (75,000)	$23.56	March 5, 2011	75,000	Disposed
Nov. 2, 2010	ATO	Restricted Stock Unit	Common Stock (8,895)	—	—	8,895	Acquired
May 4, 2010	ATO	Restricted Stock Unit	Common Stock (24,000)	—	—	24,000	Acquired
Nov. 16, 2009	ATO	Employee Stock Option (Right to Buy)	Common Stock (50,000)	$15.65	March 6, 2010	50,000	Disposed
Nov. 10, 2009	ATO	Restricted Stock Unit	Common Stock (8,472)	—	—	8,472	Acquired
May 5, 2009	ATO	Restricted Stock Unit	Common Stock (28,000)	—	—	28,000	Acquired

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

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

ATO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2011	—	—	—	—	—	—	—	—
2010	—	—	—	—	—	$1,974,863,549,649,819,136	$168,529,202,323,212,640	—
2007	$790,262	—	$2,299,801	—	$698,200	$2,960,142	$77,865	$6,826,270

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.