Michael G Browning

CIK 1196653 · View on SEC EDGAR ↗

Insider

First SEC filing: April 13, 2006 · Latest: April 13, 2006

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

DUKU selling June 1, 2006

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 78 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

78 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 4, 2022	DUKU	A	403	$111.79	$45,051	114,909 Direct	+0.35%	Acquired	-54.8% (price as of 2026-08-20)
Dec. 13, 2021	DUKU	A	473	$103.04	$48,738	112,547 Direct	+0.42%	Acquired	-50.9% (price as of 2026-08-20)
Oct. 4, 2021	DUKU	A	484	$100.76	$48,768	112,094 Direct	+0.43%	Acquired	-49.8% (price as of 2026-08-20)
July 2, 2021	DUKU	A	490	$99.51	$48,760	110,586 Direct	+0.45%	Acquired	-49.2% (price as of 2026-08-20)
May 6, 2021	DUKU	A	1,591	$100.54	$159,959	109,060 Direct	+1.48%	Acquired	-49.7% (price as of 2026-08-20)
April 1, 2021	DUKU	A	610	$96.28	$58,731	108,137 Direct	+0.57%	Acquired	-47.5% (price as of 2026-08-20)
Dec. 18, 2020	DUKU	A	540	$90.32	$48,773	106,453 Direct	+0.51%	Acquired	-44.0% (price as of 2026-08-20)
Oct. 1, 2020	DUKU	A	623	$90.05	$56,101	104,255 Direct	+0.60%	Acquired	-43.8% (price as of 2026-08-20)
July 7, 2020	DUKU	A	557	$80.82	$45,017	102,630 Direct	+0.55%	Acquired	-37.4% (price as of 2026-08-20)
May 7, 2020	DUKU	A	1,992	$80.31	$159,978	100,950 Direct	+2.01%	Acquired	-37.0% (price as of 2026-08-20)
April 3, 2020	DUKU	A	592	$76.02	$45,004	99,008 Direct	+0.60%	Acquired	-33.5% (price as of 2026-08-20)
Dec. 16, 2019	DUKU	A	497	$90.49	$44,974	97,047 Direct	+0.51%	Acquired	-44.1% (price as of 2026-08-20)
Oct. 9, 2019	DUKU	A	469	$96.03	$45,038	95,492 Direct	+0.49%	Acquired	-47.3% (price as of 2026-08-20)
July 9, 2019	DUKU	A	503	$89.40	$44,968	94,170 Direct	+0.54%	Acquired	-43.4% (price as of 2026-08-20)
May 2, 2019	DUKU	A	1,782	$89.81	$160,041	92,698 Direct	+1.96%	Acquired	-43.7% (price as of 2026-08-20)
April 3, 2019	DUKU	A	507	$88.85	$45,047	90,920 Direct	+0.56%	Acquired	-43.1% (price as of 2026-08-20)
May 3, 2018	DUKU	A	2,006	$79.76	$159,999	24,539 Direct	+8.90%	Acquired	-36.6% (price as of 2026-08-20)
Dec. 14, 2017	DUKU	A	514	$87.56	$45,006	85,218 Direct	+0.61%	Acquired	-42.2% (price as of 2026-08-20)
Oct. 6, 2017	DUKU	A	534	$84.29	$45,011	84,234 Direct	+0.64%	Acquired	-40.0% (price as of 2026-08-20)
July 11, 2017	DUKU	A	587	$83.18	$48,827	82,856 Direct	+0.71%	Acquired	-39.2% (price as of 2026-08-20)
May 4, 2017	DUKU	A	1,937	$82.59	$159,977	81,475 Direct	+2.44%	Acquired	-38.8% (price as of 2026-08-20)
April 5, 2017	DUKU	A	618	$82.87	$51,214	79,538 Direct	+0.78%	Acquired	-39.0% (price as of 2026-08-20)
Dec. 20, 2016	DUKU	A	824	$77.35	$63,736	78,204 Direct	+1.06%	Acquired	-34.6% (price as of 2026-08-20)
Oct. 5, 2016	DUKU	A	587	$77.09	$45,252	76,535 Direct	+0.77%	Acquired	-34.4% (price as of 2026-08-20)
July 8, 2016	DUKU	A	626	$86.01	$53,842	75,024 Direct	+0.84%	Acquired	-41.2% (price as of 2026-08-20)
May 5, 2016	DUKU	A	1,559	$80.18	$125,001	73,724 Direct	+2.16%	Acquired	-36.9% (price as of 2026-08-20)
April 6, 2016	DUKU	A	662	$79.36	$52,536	72,172 Direct	+0.93%	Acquired	-36.3% (price as of 2026-08-20)
Dec. 17, 2015	DUKU	A	688	$70.50	$48,504	70,903 Direct	+0.98%	Acquired	-28.3% (price as of 2026-08-20)
Oct. 5, 2015	DUKU	A	527	$73.08	$38,513	69,355 Direct	+0.77%	Acquired	-30.8% (price as of 2026-08-20)
July 7, 2015	DUKU	A	478	$75.27	$35,979	67,995 Direct	+0.71%	Acquired	-32.8% (price as of 2026-08-20)
May 7, 2015	DUKU	A	1,627	$76.81	$124,970	66,785 Direct	+2.50%	Acquired	-34.1% (price as of 2026-08-20)
April 9, 2015	DUKU	A	549	$77.01	$42,278	65,687 Direct	+0.84%	Acquired	-34.3% (price as of 2026-08-20)
Dec. 22, 2014	DUKU	A	511	$83.61	$42,725	64,352 Direct	+0.80%	Acquired	-39.5% (price as of 2026-08-20)
Oct. 3, 2014	DUKU	A	476	$75.17	$35,781	63,270 Direct	+0.76%	Acquired	-32.7% (price as of 2026-08-20)
July 2, 2014	DUKU	A	523	$72.22	$37,771	62,259 Direct	+0.85%	Acquired	-30.0% (price as of 2026-08-20)
May 30, 2014	DUKU	G	14,190	—	—	22,533 Direct	-38.64%	Disposed	(price as of 2026-08-20)
May 1, 2014	DUKU	A	1,676	$74.58	$124,996	60,521 Direct	+2.85%	Acquired	-32.2% (price as of 2026-08-20)
April 4, 2014	DUKU	A	536	$70.49	$37,783	59,431 Direct	+0.91%	Acquired	-28.2% (price as of 2026-08-20)
May 29, 2013	DUKU	G	10,000	—	—	36,723 Direct	-21.40%	Disposed	(price as of 2026-08-20)
May 2, 2013	DUKU	A	1,672	$74.78	$125,032	46,723 Direct	+3.71%	Acquired	-32.4% (price as of 2026-08-20)
Aug. 28, 2012	DUKU	A	320	$65.37	$20,918	54,009 Direct	+0.60%	Acquired	-22.6% (price as of 2026-08-20)
May 3, 2012	DUKU	A	4,673	$21.40	$100,002	159,319 Direct	+3.02%	Acquired	136.4% (price as of 2026-08-20)
Dec. 30, 2011	DUKU	A	1,568	$22.00	$34,496	152,857 Direct	+1.04%	Acquired	129.9% (price as of 2026-08-20)
Sept. 30, 2011	DUKU	A	1,626	$19.99	$32,504	149,832 Direct	+1.10%	Acquired	153.0% (price as of 2026-08-20)
June 30, 2011	DUKU	A	1,832	$18.83	$34,497	146,418 Direct	+1.27%	Acquired	168.6% (price as of 2026-08-20)
May 5, 2011	DUKU	A	5,342	$18.72	$100,002	142,743 Direct	+3.89%	Acquired	170.2% (price as of 2026-08-20)
March 31, 2011	DUKU	A	2,039	$18.15	$37,008	137,494 Direct	+1.51%	Acquired	178.7% (price as of 2026-08-20)
Dec. 31, 2010	DUKU	A	2,695	$17.81	$47,998	133,748 Direct	+2.06%	Acquired	184.0% (price as of 2026-08-20)
Sept. 30, 2010	DUKU	A	1,835	$17.71	$32,498	129,306 Direct	+1.44%	Acquired	185.6% (price as of 2026-08-20)
June 30, 2010	DUKU	A	2,062	$16.00	$32,992	125,968 Direct	+1.66%	Acquired	216.1% (price as of 2026-08-20)
May 6, 2010	DUKU	A	6,068	$16.48	$100,001	122,086 Direct	+5.23%	Acquired	206.9% (price as of 2026-08-20)
March 31, 2010	DUKU	A	1,991	$16.32	$32,493	116,065 Direct	+1.75%	Acquired	209.9% (price as of 2026-08-20)
Dec. 31, 2009	DUKU	A	2,295	$17.21	$39,497	112,366 Direct	+2.09%	Acquired	193.9% (price as of 2026-08-20)
Sept. 30, 2009	DUKU	A	1,938	$15.74	$30,504	108,794 Direct	+1.81%	Acquired	221.3% (price as of 2026-08-20)
June 30, 2009	DUKU	A	1,610	$14.59	$23,490	105,404 Direct	+1.55%	Acquired	246.7% (price as of 2026-08-20)
May 7, 2009	DUKU	A	7,047	$14.19	$99,997	102,250 Direct	+7.40%	Acquired	256.4% (price as of 2026-08-20)
March 31, 2009	DUKU	A	2,083	$14.32	$29,829	95,245 Direct	+2.24%	Acquired	253.2% (price as of 2026-08-20)
Dec. 31, 2008	DUKU	A	2,165	$15.01	$32,497	91,554 Direct	+2.42%	Acquired	237.0% (price as of 2026-08-20)
Sept. 30, 2008	DUKU	A	1,176	$17.43	$20,498	88,273 Direct	+1.35%	Acquired	190.2% (price as of 2026-08-20)
June 30, 2008	DUKU	A	1,812	$17.38	$31,493	86,115 Direct	+2.15%	Acquired	191.0% (price as of 2026-08-20)
May 8, 2008	DUKU	A	5,390	$18.55	$99,984	83,274 Direct	+6.92%	Acquired	172.7% (price as of 2026-08-20)
March 31, 2008	DUKU	A	1,709	—	—	9,942 Direct	+20.76%	Acquired	(price as of 2026-08-20)
Dec. 31, 2007	DUKU	A	1,536	—	—	5,436 Direct	+39.38%	Acquired	(price as of 2026-08-20)
Sept. 28, 2007	DUKU	A	1,372	—	—	72,160 Direct	+1.94%	Acquired	(price as of 2026-08-20)
June 30, 2007	DUKU	A	1,339	—	—	70,788 Direct	+1.93%	Acquired	(price as of 2026-08-20)
May 10, 2007	DUKU	A	4,960	$20.15	$99,944	135,155 Direct	+3.81%	Acquired	151.0% (price as of 2026-08-20)
April 3, 2007	DUKU	M	2,600	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 3, 2007	DUKU	M	2,600	—	—	68,718 Direct	+3.93%	Acquired	(price as of 2026-08-20)
March 30, 2007	DUKU	A	1,207	—	—	66,118 Direct	+1.86%	Acquired	(price as of 2026-08-20)
Dec. 31, 2006	DUKU	A	678	$33.21	$22,516	64,226 Direct	+1.07%	Acquired	52.3% (price as of 2026-08-20)
Sept. 30, 2006	DUKU	A	613	—	—	62,942 Direct	+0.98%	Acquired	(price as of 2026-08-20)
June 30, 2006	DUKU	A	1,038	$29.37	$30,486	61,677 Direct	+1.71%	Acquired	72.2% (price as of 2026-08-20)
June 1, 2006	DUKU	S	19,907	$28.03	$557,993	146,549 Direct	-11.96%	Disposed	80.4% (price as of 2026-08-20)
May 31, 2006	DUKU	S	16,354	$28.20	$461,183	150,102 Direct	-9.82%	Disposed	79.4% (price as of 2026-08-20)
May 31, 2006	DUKU	M	15,600	$15.26	$238,056	210,102 Direct	+8.02%	Acquired	231.5% (price as of 2026-08-20)
May 31, 2006	DUKU	G	43,646	—	—	166,456 Direct	-20.77%	Disposed	(price as of 2026-08-20)
May 31, 2006	DUKU	M	15,600	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 16, 2006	DUKU	M	19,907	—	—	194,502 Direct	+11.40%	Acquired	(price as of 2026-08-20)
May 16, 2006	DUKU	M	19,907	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 11, 2006	DUKU	A	2,600	—	—	2,600 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
April 4, 2022	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (403)	—	—	403	Acquired
Dec. 13, 2021	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (473)	—	—	473	Acquired
Oct. 4, 2021	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (484)	—	—	484	Acquired
July 2, 2021	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (490)	—	—	490	Acquired
May 6, 2021	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,591)	—	—	1,591	Acquired
April 1, 2021	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (610)	—	—	610	Acquired
Dec. 18, 2020	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (540)	—	—	540	Acquired
Oct. 1, 2020	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (623)	—	—	623	Acquired
July 7, 2020	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (557)	—	—	557	Acquired
May 7, 2020	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,992)	—	—	1,992	Acquired
April 3, 2020	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (592)	—	—	592	Acquired
Dec. 16, 2019	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (497)	—	—	497	Acquired
Oct. 9, 2019	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (469)	—	—	469	Acquired
July 9, 2019	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (503)	—	—	503	Acquired
May 2, 2019	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,782)	—	—	1,782	Acquired
April 3, 2019	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (507)	—	—	507	Acquired
Dec. 14, 2017	DUKU	Common Stock	Director Savings Plan Restricted Stock Unit Deferrals (514)	—	—	514	Acquired
Oct. 6, 2017	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (534)	—	—	534	Acquired
July 11, 2017	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (587)	—	—	587	Acquired
May 4, 2017	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,937)	—	—	1,937	Acquired
April 5, 2017	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (618)	—	—	618	Acquired
Dec. 20, 2016	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (824)	—	—	824	Acquired
Oct. 5, 2016	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (587)	—	—	587	Acquired
July 8, 2016	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (626)	—	—	626	Acquired
May 5, 2016	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,559)	—	—	1,559	Acquired
April 6, 2016	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (662)	—	—	662	Acquired
Dec. 17, 2015	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (688)	—	—	688	Acquired
Oct. 5, 2015	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (527)	—	—	527	Acquired
July 7, 2015	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (478)	—	—	478	Acquired
May 7, 2015	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,627)	—	—	1,627	Acquired
April 9, 2015	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (549)	—	—	549	Acquired
Dec. 22, 2014	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (511)	—	—	511	Acquired
Oct. 3, 2014	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (476)	—	—	476	Acquired
July 2, 2014	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (523)	—	—	523	Acquired
May 1, 2014	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (1,676)	—	—	1,676	Acquired
April 4, 2014	DUKU	Director Savings Plan Restricted Stock Unit Deferrals	Common Stock (536)	—	—	536	Acquired
Aug. 28, 2012	DUKU	Phantom Stock Director Savings Plan	Common Stock (320)	—	—	320	Acquired
May 3, 2012	DUKU	Phantom Stock Director Savings Plan	Common Stock (4,673)	—	—	4,673	Acquired
Dec. 30, 2011	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,568)	—	—	1,568	Acquired
Sept. 30, 2011	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,626)	—	—	1,626	Acquired
June 30, 2011	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,832)	—	—	1,832	Acquired
May 5, 2011	DUKU	Phantom Stock Director Savings Plan	Common Stock (5,342)	—	—	5,342	Acquired
March 31, 2011	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,039)	—	—	2,039	Acquired
Dec. 31, 2010	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,695)	—	—	2,695	Acquired
Sept. 30, 2010	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,835)	—	—	1,835	Acquired
June 30, 2010	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,062)	—	—	2,062	Acquired
May 6, 2010	DUKU	Phantom Stock Director Savings Plan	Common Stock (6,068)	—	—	6,068	Acquired
March 31, 2010	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,991)	—	—	1,991	Acquired
Dec. 31, 2009	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,295)	—	—	2,295	Acquired
Sept. 30, 2009	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,938)	—	—	1,938	Acquired
June 30, 2009	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,610)	—	—	1,610	Acquired
May 7, 2009	DUKU	Phantom Stock Director Savings Plan	Common Stock (7,047)	—	—	7,047	Acquired
March 31, 2009	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,083)	—	—	2,083	Acquired
Dec. 31, 2008	DUKU	Phantom Stock Director Savings Plan	Common Stock (2,165)	—	—	2,165	Acquired
Sept. 30, 2008	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,176)	—	—	1,176	Acquired
June 30, 2008	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,812)	—	—	1,812	Acquired
May 8, 2008	DUKU	Phantom Stock Director Savings Plan	Common Stock (5,390)	—	—	5,390	Acquired
March 31, 2008	DUKU	Phantom Stock Director Savings Plan	Common Stock (1,709)	—	—	1,709	Acquired
Dec. 31, 2007	DUKU	Phantom Stock Dsp II	Common Stock (1,536)	—	—	1,536	Acquired
Sept. 28, 2007	DUKU	Phantom Stock	Common Stock (1,372)	—	—	1,372	Acquired
June 30, 2007	DUKU	Phantom Stock	Common Stock (1,339)	—	—	1,339	Acquired
April 3, 2007	DUKU	Phantom Stock	Common Stock (2,600)	—	—	2,600	Disposed
April 3, 2007	DUKU	Phantom Stock	Common Stock (2,600)	—	—	2,600	Acquired
March 30, 2007	DUKU	Phantom Stock	Common Stock (1,207)	—	—	1,207	Acquired
Dec. 31, 2006	DUKU	Phantom Stock	Common Stock (678)	—	—	678	Acquired
Sept. 30, 2006	DUKU	Phantom Stock	Common Stock (613)	—	—	613	Acquired
June 30, 2006	DUKU	Phantom Stock	Common Stock (1,038)	—	—	1,038	Acquired
May 31, 2006	DUKU	Stock Option (Right to buy)	Common Stock (15,600)	$15.26	Dec. 14, 2009	15,600	Disposed
May 16, 2006	DUKU	Phantom Stock	Common Stock (19,907)	—	May 16, 2006	19,907	Disposed
May 11, 2006	DUKU	Phantom Stock	Common Stock (2,600)	—	—	2,600	Acquired

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

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
April 13, 2006	DUKU	Common Stock	174,595	Direct
April 13, 2006	DUKU	Phantom Stock→ Common Stock	—	Direct
April 13, 2006	DUKU	Stock Option (Right to buy)→ Common Stock	—	Direct