John T Herron

Insider

First SEC filing: Dec. 18, 2012 · Latest: Dec. 18, 2012

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 + 52 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

52 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 1, 2025	DUKU	A	1,607	$121.33	$194,977	33,815 Direct	+4.99%	Acquired	-58.3% (price as of 2026-08-20)
May 22, 2024	DUKU	G	200	—	—	31,448 Direct	-0.63%	Disposed	(price as of 2026-08-20)
May 22, 2024	DUKU	G	200	—	—	31,248 Direct	-0.64%	Disposed	(price as of 2026-08-20)
May 22, 2024	DUKU	G	200	—	—	31,048 Direct	-0.64%	Disposed	(price as of 2026-08-20)
May 20, 2024	DUKU	G	1,697	—	—	31,648 Direct	-5.09%	Disposed	(price as of 2026-08-20)
May 9, 2024	DUKU	A	1,699	$103.02	$175,031	31,328 Direct	+5.73%	Acquired	-50.9% (price as of 2026-08-20)
May 4, 2023	DUKU	A	1,784	$98.11	$175,028	28,428 Direct	+6.70%	Acquired	-48.4% (price as of 2026-08-20)
May 20, 2022	DUKU	G	200	—	—	26,055 Direct	-0.76%	Disposed	(price as of 2026-08-20)
May 20, 2022	DUKU	G	200	—	—	25,855 Direct	-0.77%	Disposed	(price as of 2026-08-20)
May 20, 2022	DUKU	G	200	—	—	25,655 Direct	-0.77%	Disposed	(price as of 2026-08-20)
May 5, 2022	DUKU	A	1,590	$110.05	$174,980	26,255 Direct	+6.45%	Acquired	-54.0% (price as of 2026-08-20)
May 6, 2021	DUKU	A	1,591	$100.54	$159,959	23,758 Direct	+7.18%	Acquired	-49.7% (price as of 2026-08-20)
May 20, 2020	DUKU	G	200	—	—	21,633 Direct	-0.92%	Disposed	(price as of 2026-08-20)
May 20, 2020	DUKU	G	200	—	—	21,433 Direct	-0.92%	Disposed	(price as of 2026-08-20)
May 20, 2020	DUKU	G	200	—	—	21,233 Direct	-0.93%	Disposed	(price as of 2026-08-20)
May 7, 2020	DUKU	A	1,992	$80.31	$159,978	21,833 Direct	+10.04%	Acquired	-37.0% (price as of 2026-08-20)
May 2, 2019	DUKU	A	1,782	$89.81	$160,041	19,055 Direct	+10.32%	Acquired	-43.7% (price as of 2026-08-20)
May 17, 2018	DUKU	G	600	—	—	17,280 Direct	-3.36%	Disposed	(price as of 2026-08-20)
May 3, 2018	DUKU	A	2,006	$79.76	$159,999	17,701 Direct	+12.78%	Acquired	-36.6% (price as of 2026-08-20)
May 18, 2017	DUKU	P	15	$83.33	$1,250	15,221 Direct	+0.10%	Acquired	-39.3% (price as of 2026-08-20)
May 17, 2017	DUKU	G	600	—	—	15,206 Direct	-3.80%	Disposed	(price as of 2026-08-20)
May 4, 2017	DUKU	A	1,937	$82.59	$159,977	15,806 Direct	+13.97%	Acquired	-38.8% (price as of 2026-08-20)
May 5, 2016	DUKU	A	1,559	$80.81	$125,983	13,191 Direct	+13.40%	Acquired	-37.4% (price as of 2026-08-20)
May 7, 2015	DUKU	A	1,627	$76.81	$124,970	11,240 Direct	+16.92%	Acquired	-34.1% (price as of 2026-08-20)
May 1, 2014	DUKU	A	1,676	$74.58	$124,996	9,555 Direct	+21.27%	Acquired	-32.2% (price as of 2026-08-20)
Aug. 29, 2013	DUKU	P	5,900	$65.77	$388,043	7,879 Direct	+298.13%	Acquired	-23.1% (price as of 2026-08-20)
May 2, 2013	DUKU	A	307	$69.25	$21,260	1,979 Direct	+18.36%	Acquired	-27.0% (price as of 2026-08-20)
May 2, 2013	DUKU	A	1,672	$74.78	$125,032	1,672 Direct	—	Acquired	-32.4% (price as of 2026-08-20)
Dec. 17, 2012	ETR	M	2,050	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 17, 2012	ETR	S 10b5-1	1,694	$64.09	$108,568	9,347 Direct	-15.34%	Disposed	238.4% (price as of 2026-08-20)
Dec. 17, 2012	ETR	M	2,050	$44.45	$91,122	11,041 Direct	+22.80%	Acquired	387.9% (price as of 2026-08-20)
Nov. 15, 2012	ETR	M	2,050	—	—	2,050 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Nov. 15, 2012	ETR	S 10b5-1	1,692	$63.52	$107,476	8,936 Direct	-15.92%	Disposed	241.5% (price as of 2026-08-20)
Nov. 15, 2012	ETR	M	2,050	$44.45	$91,122	10,628 Direct	+23.90%	Acquired	387.9% (price as of 2026-08-20)
Oct. 15, 2012	ETR	M	2,050	—	—	4,100 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Oct. 15, 2012	ETR	S 10b5-1	1,560	$69.32	$108,139	8,578 Direct	-15.39%	Disposed	212.9% (price as of 2026-08-20)
Oct. 15, 2012	ETR	M	2,050	$44.45	$91,122	10,138 Direct	+25.35%	Acquired	387.9% (price as of 2026-08-20)
Sept. 17, 2012	ETR	M	2,050	—	—	6,150 Direct	-25.00%	Disposed	(price as of 2026-08-20)
Sept. 17, 2012	ETR	S 10b5-1	1,559	$68.50	$106,792	8,088 Direct	-16.16%	Disposed	216.6% (price as of 2026-08-20)
Sept. 17, 2012	ETR	M	2,050	$44.45	$91,122	9,647 Direct	+26.98%	Acquired	387.9% (price as of 2026-08-20)
Aug. 15, 2012	ETR	M	2,050	—	—	8,200 Direct	-20.00%	Disposed	(price as of 2026-08-20)
Aug. 15, 2012	ETR	S 10b5-1	1,544	$69.76	$107,709	7,546 Direct	-16.99%	Disposed	210.9% (price as of 2026-08-20)
Aug. 15, 2012	ETR	M	2,050	$44.45	$91,122	9,090 Direct	+29.12%	Acquired	387.9% (price as of 2026-08-20)
July 16, 2012	ETR	M	2,050	—	—	10,250 Direct	-16.67%	Disposed	(price as of 2026-08-20)
July 16, 2012	ETR	S 10b5-1	1,546	$69.48	$107,416	7,041 Direct	-18.00%	Disposed	212.2% (price as of 2026-08-20)
July 16, 2012	ETR	M	2,050	$44.45	$91,122	8,587 Direct	+31.36%	Acquired	387.9% (price as of 2026-08-20)
June 15, 2012	ETR	M	2,050	—	—	12,300 Direct	-14.29%	Disposed	(price as of 2026-08-20)
June 15, 2012	ETR	S 10b5-1	1,589	$66.32	$105,382	6,537 Direct	-19.55%	Disposed	227.0% (price as of 2026-08-20)
June 15, 2012	ETR	M	2,050	$44.45	$91,122	8,126 Direct	+33.74%	Acquired	387.9% (price as of 2026-08-20)
May 15, 2012	ETR	M	2,050	—	—	14,350 Direct	-12.50%	Disposed	(price as of 2026-08-20)
May 15, 2012	ETR	S 10b5-1	1,622	$64.07	$103,922	6,023 Direct	-21.22%	Disposed	238.5% (price as of 2026-08-20)
May 15, 2012	ETR	M	2,050	$44.45	$91,122	7,645 Direct	+36.64%	Acquired	387.9% (price as of 2026-08-20)
April 16, 2012	ETR	M	2,050	—	—	16,400 Direct	-11.11%	Disposed	(price as of 2026-08-20)
April 16, 2012	ETR	S 10b5-1	1,598	$66.08	$105,596	5,595 Direct	-22.22%	Disposed	228.2% (price as of 2026-08-20)
April 16, 2012	ETR	M	2,050	$44.45	$91,122	7,193 Direct	+39.86%	Acquired	387.9% (price as of 2026-08-20)
March 15, 2012	ETR	M	2,050	—	—	18,450 Direct	-10.00%	Disposed	(price as of 2026-08-20)
March 15, 2012	ETR	S	1,569	$67.81	$106,394	5,143 Direct	-23.38%	Disposed	219.9% (price as of 2026-08-20)
March 15, 2012	ETR	M	2,050	$44.45	$91,122	6,712 Direct	+43.97%	Acquired	387.9% (price as of 2026-08-20)
Jan. 27, 2012	ETR	F	312	$70.62	$22,033	4,612 Direct	-6.34%	Disposed	207.1% (price as of 2026-08-20)
Jan. 26, 2012	ETR	A	18,000	—	—	18,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 26, 2012	ETR	A	2,300	—	—	4,924 Direct	+87.65%	Acquired	(price as of 2026-08-20)
Jan. 27, 2011	ETR	A	15,300	—	—	15,300 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 27, 2011	ETR	A	2,500	—	—	2,500 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 28, 2010	ETR	A	30,000	—	—	30,000 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
Dec. 17, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
Nov. 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
Oct. 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
Sept. 17, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
Aug. 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
July 16, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
June 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
May 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
April 16, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
March 15, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (2,050)	$44.45	Jan. 30, 2013	2,050	Disposed
Jan. 26, 2012	ETR	Employee Stock Option (Right to Buy)	Common Stock (18,000)	$71.30	Jan. 26, 2022	18,000	Acquired
Jan. 27, 2011	ETR	Employee Stock Option (Right to Buy)	Common Stock (15,300)	$72.79	Jan. 27, 2021	15,300	Acquired
Jan. 28, 2010	ETR	Employee Stock Option (Right to Buy)	Common Stock (30,000)	$77.10	Jan. 28, 2020	30,000	Acquired

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

Initial ownership (Form 3) 7 holdings

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

Date	Ticker	Security	Shares	Ownership
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (20,500)	20,500	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (18,000)	18,000	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (20,000)	20,000	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (16,500)	16,500	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (11,000)	11,000	Direct
Dec. 14, 2009	ETR	Employee Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct