Robin Sanderford

Insider

First SEC filing: Oct. 29, 2014 · Latest: Oct. 29, 2014

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

DDT selling Sept. 21, 2012

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 95 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

95 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Oct. 27, 2014	DDT	A	46	$106.64	$4,905	28,375 Direct	+0.16%	Acquired	-75.4% (price as of 2026-08-20)
Sept. 29, 2014	DDT	A	54	$112.73	$6,087	28,329 Direct	+0.19%	Acquired	-76.7% (price as of 2026-08-20)
Aug. 25, 2014	DDT	A	43	$113.46	$4,879	28,275 Direct	+0.15%	Acquired	-76.9% (price as of 2026-08-20)
July 28, 2014	DDT	A	41	$119.71	$4,908	28,232 Direct	+0.15%	Acquired	-78.1% (price as of 2026-08-20)
June 30, 2014	DDT	A	52	$117.10	$6,089	28,191 Direct	+0.18%	Acquired	-77.6% (price as of 2026-08-20)
May 27, 2014	DDT	A	44	$111.10	$4,888	28,139 Direct	+0.16%	Acquired	-76.4% (price as of 2026-08-20)
April 28, 2014	DDT	A	3	$97.58	$293	28,095 Direct	+0.01%	Acquired	-73.1% (price as of 2026-08-20)
Jan. 31, 2014	DDT	A	323	$88.18	$28,482	28,092 Direct	+1.16%	Acquired	-70.3% (price as of 2026-08-20)
Dec. 30, 2013	DDT	A	63	$96.68	$6,091	27,769 Direct	+0.23%	Acquired	-72.9% (price as of 2026-08-20)
Nov. 25, 2013	DDT	A	53	$91.09	$4,828	27,706 Direct	+0.19%	Acquired	-71.2% (price as of 2026-08-20)
Oct. 28, 2013	DDT	A	58	$83.58	$4,848	27,653 Direct	+0.21%	Acquired	-68.6% (price as of 2026-08-20)
Sept. 30, 2013	DDT	A	77	$78.68	$6,058	27,595 Direct	+0.28%	Acquired	-66.7% (price as of 2026-08-20)
Aug. 26, 2013	DDT	A	62	$78.16	$4,846	27,518 Direct	+0.23%	Acquired	-66.4% (price as of 2026-08-20)
July 29, 2013	DDT	A	59	$81.96	$4,836	27,456 Direct	+0.22%	Acquired	-68.0% (price as of 2026-08-20)
July 2, 2013	DDT	A	74	$82.44	$6,101	27,397 Direct	+0.27%	Acquired	-68.2% (price as of 2026-08-20)
May 28, 2013	DDT	A	52	$93.88	$4,882	27,323 Direct	+0.19%	Acquired	-72.1% (price as of 2026-08-20)
April 29, 2013	DDT	A	105	$82.59	$8,672	27,271 Direct	+0.39%	Acquired	-68.2% (price as of 2026-08-20)
Feb. 1, 2013	DDT	A	326	$85.31	$27,811	27,166 Direct	+1.21%	Acquired	-69.3% (price as of 2026-08-20)
Feb. 1, 2013	DDT	A	315	$85.31	$26,873	27,155 Direct	+1.17%	Acquired	-69.3% (price as of 2026-08-20)
Dec. 28, 2012	DDT	A	88	$81.19	$7,145	26,840 Direct	+0.33%	Acquired	-67.7% (price as of 2026-08-20)
Dec. 26, 2012	DDT	A	46	$83.27	$3,830	26,752 Direct	+0.17%	Acquired	-68.5% (price as of 2026-08-20)
Nov. 19, 2012	DDT	A	56	$84.48	$4,731	26,706 Direct	+0.21%	Acquired	-69.0% (price as of 2026-08-20)
Oct. 22, 2012	DDT	A	61	$77.08	$4,702	26,650 Direct	+0.23%	Acquired	-66.0% (price as of 2026-08-20)
Sept. 24, 2012	DDT	A	78	$76.24	$5,947	26,589 Direct	+0.29%	Acquired	-65.6% (price as of 2026-08-20)
Sept. 21, 2012	DDT	S	11,351	$77.14	$875,616	0 Direct	-100.00%	Disposed	-66.0% (price as of 2026-08-20)
Aug. 20, 2012	DDT	A	63	$75.28	$4,743	26,511 Direct	+0.24%	Acquired	-65.2% (price as of 2026-08-20)
July 23, 2012	DDT	A	74	$63.97	$4,734	26,448 Direct	+0.28%	Acquired	-59.0% (price as of 2026-08-20)
June 25, 2012	DDT	A	92	$64.38	$5,923	26,374 Direct	+0.35%	Acquired	-59.3% (price as of 2026-08-20)
May 31, 2012	DDT	S	13,295	$67.67	$899,673	26,282 Direct	-33.59%	Disposed	-61.2% (price as of 2026-08-20)
May 30, 2012	DDT	S	21,705	$68.64	$1,489,831	39,577 Direct	-35.42%	Disposed	-61.8% (price as of 2026-08-20)
May 18, 2012	DDT	A	73	$64.83	$4,733	61,282 Direct	+0.12%	Acquired	-59.5% (price as of 2026-08-20)
April 23, 2012	DDT	A	114	$63.32	$7,218	61,209 Direct	+0.19%	Acquired	-58.6% (price as of 2026-08-20)
Feb. 24, 2012	DDT	A	499	$56.39	$28,139	61,095 Direct	+0.82%	Acquired	-53.5% (price as of 2026-08-20)
Jan. 31, 2012	DDT	A	1	$44.57	$45	60,596 Direct	0.00%	Acquired	-41.2% (price as of 2026-08-20)
Jan. 3, 2012	DDT	A	151	$45.05	$6,803	60,595 Direct	+0.25%	Acquired	-41.8% (price as of 2026-08-20)
Nov. 21, 2011	DDT	A	93	$48.71	$4,530	60,444 Direct	+0.15%	Acquired	-46.2% (price as of 2026-08-20)
Nov. 1, 2011	DDT	A	1	$50.82	$51	60,351 Direct	0.00%	Acquired	-48.4% (price as of 2026-08-20)
Oct. 24, 2011	DDT	A	87	$52.02	$4,526	60,350 Direct	+0.14%	Acquired	-49.6% (price as of 2026-08-20)
Sept. 26, 2011	DDT	A	123	$46.03	$5,662	60,263 Direct	+0.20%	Acquired	-43.0% (price as of 2026-08-20)
Aug. 22, 2011	DDT	A	112	$40.48	$4,534	60,140 Direct	+0.19%	Acquired	-35.2% (price as of 2026-08-20)
July 25, 2011	DDT	A	76	$59.40	$4,514	60,028 Direct	+0.13%	Acquired	-55.9% (price as of 2026-08-20)
July 13, 2011	DDT	M	50,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 13, 2011	DDT	S	50,000	$58.76	$2,938,000	59,952 Direct	-45.47%	Disposed	-55.4% (price as of 2026-08-20)
July 13, 2011	DDT	M	50,000	$25.74	$1,287,000	109,952 Direct	+83.40%	Acquired	1.9% (price as of 2026-08-20)
June 27, 2011	DDT	A	109	$51.84	$5,651	59,952 Direct	+0.18%	Acquired	-49.4% (price as of 2026-08-20)
May 23, 2011	DDT	A	86	$52.71	$4,533	59,843 Direct	+0.14%	Acquired	-50.2% (price as of 2026-08-20)
May 18, 2011	DDT	M	50,000	—	—	50,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
May 18, 2011	DDT	S	50,000	$53.66	$2,683,000	59,757 Direct	-45.56%	Disposed	-51.1% (price as of 2026-08-20)
May 18, 2011	DDT	M	50,000	$25.74	$1,287,000	109,757 Direct	+83.67%	Acquired	1.9% (price as of 2026-08-20)
April 25, 2011	DDT	A	147	$45.82	$6,736	59,757 Direct	+0.25%	Acquired	-42.8% (price as of 2026-08-20)
March 4, 2011	DDT	A	628	$39.52	$24,819	59,610 Direct	+1.06%	Acquired	-33.6% (price as of 2026-08-20)
Feb. 2, 2011	DDT	A	1	$38.74	$39	58,982 Direct	0.00%	Acquired	-32.3% (price as of 2026-08-20)
Dec. 31, 2010	DDT	A	172	$37.93	$6,524	58,981 Direct	+0.29%	Acquired	-30.9% (price as of 2026-08-20)
Nov. 22, 2010	DDT	A	137	$31.84	$4,362	58,809 Direct	+0.23%	Acquired	-17.6% (price as of 2026-08-20)
Nov. 2, 2010	DDT	A	2	$25.68	$51	58,672 Direct	0.00%	Acquired	2.1% (price as of 2026-08-20)
Oct. 25, 2010	DDT	A	159	$27.33	$4,345	58,670 Direct	+0.27%	Acquired	-4.0% (price as of 2026-08-20)
Sept. 27, 2010	DDT	A	228	$23.91	$5,451	58,511 Direct	+0.39%	Acquired	9.7% (price as of 2026-08-20)
Aug. 23, 2010	DDT	A	186	$21.56	$4,010	57,265 Direct	+0.33%	Acquired	21.6% (price as of 2026-08-20)
July 26, 2010	DDT	A	551	$23.84	$13,136	57,079 Direct	+0.97%	Acquired	10.0% (price as of 2026-08-20)
June 28, 2010	DDT	A	28	$23.33	$653	56,528 Direct	+0.05%	Acquired	12.4% (price as of 2026-08-20)
Feb. 1, 2010	DDT	A	1,245	$16.54	$20,592	56,500 Direct	+2.25%	Acquired	58.6% (price as of 2026-08-20)
Jan. 4, 2010	DDT	A	58	$18.73	$1,086	55,255 Direct	+0.11%	Acquired	40.0% (price as of 2026-08-20)
Dec. 30, 2009	DDT	A	287	$18.95	$5,439	55,197 Direct	+0.52%	Acquired	38.4% (price as of 2026-08-20)
Nov. 23, 2009	DDT	A	263	$16.56	$4,355	54,910 Direct	+0.48%	Acquired	58.4% (price as of 2026-08-20)
Nov. 3, 2009	DDT	A	3	$13.37	$40	54,647 Direct	+0.01%	Acquired	96.1% (price as of 2026-08-20)
Oct. 26, 2009	DDT	A	289	$15.10	$4,364	54,644 Direct	+0.53%	Acquired	73.7% (price as of 2026-08-20)
Sept. 28, 2009	DDT	A	371	$14.68	$5,446	54,355 Direct	+0.69%	Acquired	78.6% (price as of 2026-08-20)
Aug. 24, 2009	DDT	A	295	$11.10	$3,274	53,984 Direct	+0.55%	Acquired	136.3% (price as of 2026-08-20)
Aug. 3, 2009	DDT	A	102	$10.69	$1,090	53,689 Direct	+0.19%	Acquired	145.3% (price as of 2026-08-20)
July 28, 2009	DDT	A	571	$9.47	$5,407	53,587 Direct	+1.08%	Acquired	176.9% (price as of 2026-08-20)
Dec. 26, 2008	DDT	A	295	$3.36	$991	47,457 Direct	+0.63%	Acquired	680.5% (price as of 2026-08-20)
Dec. 19, 2008	DDT	A	244	$4.06	$991	47,162 Direct	+0.52%	Acquired	545.9% (price as of 2026-08-20)
Dec. 12, 2008	DDT	A	258	$3.84	$991	46,918 Direct	+0.55%	Acquired	582.9% (price as of 2026-08-20)
Dec. 5, 2008	DDT	A	265	$3.74	$991	46,660 Direct	+0.57%	Acquired	601.2% (price as of 2026-08-20)
Nov. 28, 2008	DDT	A	281	$3.53	$992	46,395 Direct	+0.61%	Acquired	642.9% (price as of 2026-08-20)
Nov. 21, 2008	DDT	A	476	$2.91	$1,385	46,114 Direct	+1.04%	Acquired	801.2% (price as of 2026-08-20)
Nov. 14, 2008	DDT	A	377	$3.68	$1,387	45,638 Direct	+0.83%	Acquired	612.6% (price as of 2026-08-20)
Nov. 7, 2008	DDT	A	285	$4.87	$1,388	45,261 Direct	+0.63%	Acquired	438.5% (price as of 2026-08-20)
Nov. 4, 2008	DDT	A	19	$5.55	$105	45 Direct	+73.08%	Acquired	372.5% (price as of 2026-08-20)
Oct. 31, 2008	DDT	A	264	$5.26	$1,389	44,957 Direct	+0.59%	Acquired	398.6% (price as of 2026-08-20)
Oct. 27, 2008	DDT	A	322	$4.31	$1,388	45 Direct	—	Acquired	508.5% (price as of 2026-08-20)
Oct. 17, 2008	DDT	A	209	$6.65	$1,390	44,371 Direct	+0.47%	Acquired	294.4% (price as of 2026-08-20)
Oct. 10, 2008	DDT	A	179	$7.75	$1,387	44,162 Direct	+0.41%	Acquired	238.4% (price as of 2026-08-20)
Oct. 3, 2008	DDT	A	123	$11.29	$1,389	43,983 Direct	+0.28%	Acquired	132.3% (price as of 2026-08-20)
Sept. 26, 2008	DDT	A	110	$12.60	$1,386	43,860 Direct	+0.25%	Acquired	108.1% (price as of 2026-08-20)
Sept. 19, 2008	DDT	A	103	$13.47	$1,387	43,750 Direct	+0.24%	Acquired	94.7% (price as of 2026-08-20)
Sept. 12, 2008	DDT	A	110	$12.65	$1,392	43,647 Direct	+0.25%	Acquired	107.3% (price as of 2026-08-20)
Sept. 4, 2008	DDT	A	105	$13.21	$1,387	43,537 Direct	+0.24%	Acquired	98.5% (price as of 2026-08-20)
Aug. 29, 2008	DDT	A	112	$12.34	$1,382	43,432 Direct	+0.26%	Acquired	112.5% (price as of 2026-08-20)
Aug. 22, 2008	DDT	A	123	$11.30	$1,390	43,320 Direct	+0.28%	Acquired	132.1% (price as of 2026-08-20)
Aug. 15, 2008	DDT	A	116	$11.92	$1,383	43,197 Direct	+0.27%	Acquired	120.0% (price as of 2026-08-20)
Aug. 14, 2008	DDT	A	123	$11.29	$1,389	43,081 Direct	+0.29%	Acquired	132.3% (price as of 2026-08-20)
Aug. 5, 2008	DDT	A	4	$10.87	$43	42,958 Direct	+0.01%	Acquired	141.3% (price as of 2026-08-20)
Aug. 1, 2008	DDT	A	136	$10.16	$1,382	42,954 Direct	+0.32%	Acquired	158.1% (price as of 2026-08-20)
Aug. 1, 2008	DDT	A	137	$10.16	$1,392	42,818 Direct	+0.32%	Acquired	158.1% (price as of 2026-08-20)
July 18, 2008	DDT	A	139	$9.94	$1,382	42,681 Direct	+0.33%	Acquired	163.8% (price as of 2026-08-20)
July 11, 2008	DDT	A	153	$9.08	$1,389	42,542 Direct	+0.36%	Acquired	188.8% (price as of 2026-08-20)
July 7, 2008	DDT	A	128	$10.79	$1,381	42,389 Direct	+0.30%	Acquired	143.0% (price as of 2026-08-20)
June 27, 2008	DDT	A	116	$11.90	$1,380	42,261 Direct	+0.28%	Acquired	120.4% (price as of 2026-08-20)
June 20, 2008	DDT	A	99	$14.05	$1,391	42,145 Direct	+0.24%	Acquired	86.7% (price as of 2026-08-20)

Showing latest 100 of 126 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
July 13, 2011	DDT	Common Class A	Common Class A (50,000)	$25.74	Jan. 24, 2016	50,000	Disposed
May 18, 2011	DDT	Common Class A	Common Class A (50,000)	$25.74	Jan. 24, 2016	50,000	Disposed
Dec. 1, 2006	DDT	Employee Stock Option	Common Class A (3,177)	$27.19	Dec. 15, 2007	3,177	Disposed
Dec. 1, 2006	DDT	Employee Stk Option	Common Class A (116)	$10.44	Dec. 15, 2007	116	Disposed
Dec. 1, 2006	DDT	Employee Stk Option	Common Class A (15,000)	$24.01	May 14, 2009	15,000	Disposed
Dec. 1, 2006	DDT	Employee Stock Option	Common Class A (8,120)	$24.86	Dec. 15, 2007	8,120	Disposed
Jan. 24, 2006	DDT	Employee Stock Option (right to buy)	Common Class A (100,000)	$25.74	Jan. 24, 2016	100,000	Acquired
Nov. 23, 2004	DDT	Common Class A	Common Class A (40,000)	$18.12	Dec. 10, 2004	40,000	Disposed

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