Wayne Chang

Insider

First SEC filing: Jan. 26, 2009 · Latest: Jan. 26, 2009

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

SD buying Sept. 12, 2014

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 84 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

84 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 19, 2015	SD	A	95,998	$2.37	$227,515	95,998 Direct	—	Acquired	513.1% (price as of 2026-08-19)
Feb. 15, 2015	SD	F	4,235	$2.09	$8,851	321,624 Direct	-1.30%	Disposed	595.2% (price as of 2026-08-19)
Jan. 15, 2015	SD	F	3,554	$1.21	$4,300	325,859 Direct	-1.08%	Disposed	1100.8% (price as of 2026-08-19)
Jan. 14, 2015	SD	F	3,554	$1.28	$4,549	329,413 Direct	-1.07%	Disposed	1035.2% (price as of 2026-08-19)
Jan. 13, 2015	SD	F	3,554	$1.34	$4,762	332,967 Direct	-1.06%	Disposed	984.3% (price as of 2026-08-19)
Jan. 2, 2015	SD	A	5,936	$1.77	$10,507	336,521 Direct	+1.80%	Acquired	720.9% (price as of 2026-08-19)
Oct. 1, 2014	SD	A	2,524	$4.16	$10,500	330,585 Direct	+0.77%	Acquired	249.3% (price as of 2026-08-19)
Sept. 12, 2014	SD	P	10,088	$4.96	$50,036	15,793 Indirect	+176.83%	Acquired	192.9% (price as of 2026-08-19)
July 13, 2014	SD	F	3,057	$6.58	$20,115	328,061 Direct	-0.92%	Disposed	120.8% (price as of 2026-08-19)
July 9, 2014	SD	F	1,698	$6.97	$11,835	331,118 Direct	-0.51%	Disposed	108.5% (price as of 2026-08-19)
July 8, 2014	SD	F	3,057	$6.97	$21,307	332,816 Direct	-0.91%	Disposed	108.5% (price as of 2026-08-19)
July 1, 2014	SD	A	1,271	$7.08	$8,999	335,873 Direct	+0.38%	Acquired	105.2% (price as of 2026-08-19)
April 1, 2014	SD	A	11,745	$6.15	$72,232	334,602 Direct	+3.64%	Acquired	136.3% (price as of 2026-08-19)
Feb. 15, 2014	SD	A	44,696	—	—	322,857 Direct	+16.07%	Acquired	(price as of 2026-08-19)
Jan. 15, 2014	SD	F	2,994	$5.94	$17,784	278,161 Direct	-1.06%	Disposed	144.6% (price as of 2026-08-19)
Jan. 14, 2014	SD	F	3,121	$5.96	$18,601	281,155 Direct	-1.10%	Disposed	143.8% (price as of 2026-08-19)
Jan. 13, 2014	SD	F	3,554	$5.91	$21,004	284,276 Direct	-1.23%	Disposed	145.9% (price as of 2026-08-19)
Jan. 8, 2014	SD	F	1,185	$5.78	$6,849	287,830 Direct	-0.41%	Disposed	151.4% (price as of 2026-08-19)
Jan. 2, 2014	SD	A	2,224	$5.95	$13,233	289,015 Direct	+0.78%	Acquired	144.2% (price as of 2026-08-19)
Oct. 1, 2013	SD	A	7,174	$6.14	$44,048	286,791 Direct	+2.57%	Acquired	136.6% (price as of 2026-08-19)
July 13, 2013	SD	F	3,057	$4.87	$14,888	279,617 Direct	-1.08%	Disposed	198.4% (price as of 2026-08-19)
July 10, 2013	SD	F	815	$5.05	$4,116	282,674 Direct	-0.29%	Disposed	187.7% (price as of 2026-08-19)
July 9, 2013	SD	F	1,698	$4.90	$8,320	283,489 Direct	-0.60%	Disposed	196.5% (price as of 2026-08-19)
July 8, 2013	SD	F	3,057	$4.87	$14,888	285,187 Direct	-1.06%	Disposed	198.4% (price as of 2026-08-19)
July 1, 2013	SD	A	2,753	$4.80	$13,214	288,244 Direct	+0.96%	Acquired	202.7% (price as of 2026-08-19)
April 5, 2013	SD	P	10,000	$4.99	$49,900	285,491 Direct	+3.63%	Acquired	191.2% (price as of 2026-08-19)
April 1, 2013	SD	A	4,035	$5.22	$21,063	275,491 Direct	+1.49%	Acquired	178.4% (price as of 2026-08-19)
Jan. 15, 2013	SD	A	37,500	—	—	271,456 Direct	+16.03%	Acquired	(price as of 2026-08-19)
Jan. 14, 2013	SD	F	3,056	$6.66	$20,353	233,956 Direct	-1.29%	Disposed	118.2% (price as of 2026-08-19)
Jan. 13, 2013	SD	F	3,056	$6.86	$20,964	237,012 Direct	-1.27%	Disposed	111.8% (price as of 2026-08-19)
Jan. 9, 2013	SD	F	816	$6.93	$5,655	240,068 Direct	-0.34%	Disposed	109.7% (price as of 2026-08-19)
Jan. 8, 2013	SD	F	1,019	$6.97	$7,102	240,884 Direct	-0.42%	Disposed	108.5% (price as of 2026-08-19)
Jan. 2, 2013	SD	A	2,059	$6.42	$13,219	241,903 Direct	+0.86%	Acquired	126.3% (price as of 2026-08-19)
Oct. 7, 2012	SD	F	397	$7.27	$2,886	239,844 Direct	-0.17%	Disposed	99.9% (price as of 2026-08-19)
Oct. 1, 2012	SD	A	6,247	$7.06	$44,104	240,241 Direct	+2.67%	Acquired	105.8% (price as of 2026-08-19)
July 13, 2012	SD	A	37,500	—	—	233,994 Direct	+19.08%	Acquired	(price as of 2026-08-19)
July 11, 2012	SD	F	397	$6.16	$2,446	196,494 Direct	-0.20%	Disposed	135.9% (price as of 2026-08-19)
July 10, 2012	SD	F	793	$6.10	$4,837	196,891 Direct	-0.40%	Disposed	138.2% (price as of 2026-08-19)
July 9, 2012	SD	F	1,651	$6.41	$10,583	197,684 Direct	-0.83%	Disposed	126.7% (price as of 2026-08-19)
July 8, 2012	SD	F	2,972	$6.43	$19,110	199,335 Direct	-1.47%	Disposed	126.0% (price as of 2026-08-19)
July 2, 2012	SD	A	2,023	$6.54	$13,230	202,307 Direct	+1.01%	Acquired	122.2% (price as of 2026-08-19)
April 2, 2012	SD	A	2,689	$8.00	$21,512	200,284 Direct	+1.36%	Acquired	81.6% (price as of 2026-08-19)
Jan. 14, 2012	SD	F	2,972	$8.05	$23,925	197,595 Direct	-1.48%	Disposed	80.5% (price as of 2026-08-19)
Jan. 13, 2012	SD	A	37,500	—	—	200,567 Direct	+23.00%	Acquired	(price as of 2026-08-19)
Jan. 11, 2012	SD	F	318	$8.47	$2,693	163,067 Direct	-0.19%	Disposed	71.5% (price as of 2026-08-19)
Jan. 9, 2012	SD	F	897	$8.50	$7,624	163,385 Direct	-0.55%	Disposed	70.9% (price as of 2026-08-19)
Jan. 8, 2012	SD	F	1,122	$8.54	$9,582	164,282 Direct	-0.68%	Disposed	70.1% (price as of 2026-08-19)
Jan. 3, 2012	SD	A	1,542	$8.30	$12,799	165,404 Direct	+0.94%	Acquired	75.1% (price as of 2026-08-19)
Oct. 7, 2011	SD	F	400	$6.11	$2,444	163,862 Direct	-0.24%	Disposed	137.8% (price as of 2026-08-19)
Oct. 3, 2011	SD	A	8,409	$5.07	$42,634	164,262 Direct	+5.40%	Acquired	186.6% (price as of 2026-08-19)
July 11, 2011	SD	F	400	$10.28	$4,112	156,093 Direct	-0.26%	Disposed	41.3% (price as of 2026-08-19)
July 11, 2011	SD	F	240	$10.28	$2,467	155,853 Direct	-0.15%	Disposed	41.3% (price as of 2026-08-19)
July 10, 2011	SD	F	799	$10.83	$8,653	156,493 Direct	-0.51%	Disposed	34.2% (price as of 2026-08-19)
July 9, 2011	SD	F	1,665	$10.83	$18,032	157,292 Direct	-1.05%	Disposed	34.2% (price as of 2026-08-19)
July 8, 2011	SD	A	37,500	—	—	158,957 Direct	+30.88%	Acquired	(price as of 2026-08-19)
July 1, 2011	SD	A	1,171	$10.55	$12,354	121,457 Direct	+0.97%	Acquired	37.7% (price as of 2026-08-19)
April 1, 2011	SD	A	1,495	$13.01	$19,450	120,286 Direct	+1.26%	Acquired	11.7% (price as of 2026-08-19)
March 1, 2011	SD	S	11,591	$10.83	$125,531	118,791 Direct	-8.89%	Disposed	34.2% (price as of 2026-08-19)
March 1, 2011	SD	S	7,956	$11.00	$87,516	0 Indirect	-100.00%	Disposed	32.1% (price as of 2026-08-19)
Feb. 28, 2011	SD	F	400	$10.81	$4,324	130,382 Direct	-0.31%	Disposed	34.4% (price as of 2026-08-19)
Jan. 14, 2011	SD	A	37,500	—	—	130,782 Direct	+40.20%	Acquired	(price as of 2026-08-19)
Jan. 11, 2011	SD	F	362	$7.80	$2,824	93,282 Direct	-0.39%	Disposed	86.3% (price as of 2026-08-19)
Jan. 9, 2011	SD	F	904	$7.81	$7,060	93,644 Direct	-0.96%	Disposed	86.0% (price as of 2026-08-19)
Jan. 8, 2011	SD	F	1,130	$7.81	$8,825	94,548 Direct	-1.18%	Disposed	86.0% (price as of 2026-08-19)
Jan. 3, 2011	SD	A	1,607	$7.54	$12,117	95,678 Direct	+1.71%	Acquired	92.7% (price as of 2026-08-19)
Oct. 7, 2010	SD	F	399	$5.69	$2,270	94,071 Direct	-0.42%	Disposed	155.4% (price as of 2026-08-19)
Oct. 5, 2010	SD	A	6,880	$5.87	$40,386	94,470 Direct	+7.85%	Acquired	147.5% (price as of 2026-08-19)
Aug. 24, 2010	SD	P	10,000	$4.03	$40,300	87,590 Direct	+12.89%	Acquired	260.5% (price as of 2026-08-19)
July 20, 2010	SD	F	3,438	$6.43	$22,106	77,590 Direct	-4.24%	Disposed	126.0% (price as of 2026-08-19)
July 11, 2010	SD	F	399	$6.26	$2,498	81,267 Direct	-0.49%	Disposed	132.1% (price as of 2026-08-19)
July 11, 2010	SD	F	239	$6.26	$1,496	81,028 Direct	-0.29%	Disposed	132.1% (price as of 2026-08-19)
July 10, 2010	SD	F	798	$6.26	$4,995	81,666 Direct	-0.97%	Disposed	132.1% (price as of 2026-08-19)
July 9, 2010	SD	A	20,833	—	—	82,464 Direct	+33.80%	Acquired	(price as of 2026-08-19)
July 6, 2010	SD	A	2,053	$5.90	$12,113	61,631 Direct	+3.45%	Acquired	146.3% (price as of 2026-08-19)
April 5, 2010	SD	A	3,121	$7.58	$23,657	59,578 Direct	+5.53%	Acquired	91.7% (price as of 2026-08-19)
Feb. 28, 2010	SD	F	399	$7.94	$3,168	56,457 Direct	-0.70%	Disposed	83.0% (price as of 2026-08-19)
Jan. 11, 2010	SD	F	319	$10.34	$3,298	56,856 Direct	-0.56%	Disposed	40.5% (price as of 2026-08-19)
Jan. 9, 2010	SD	F	798	$10.84	$8,650	57,175 Direct	-1.38%	Disposed	34.0% (price as of 2026-08-19)
Jan. 8, 2010	SD	A	12,500	—	—	57,973 Direct	+27.49%	Acquired	(price as of 2026-08-19)
Jan. 4, 2010	SD	A	1,060	$10.12	$10,727	45,473 Direct	+2.39%	Acquired	43.6% (price as of 2026-08-19)
Oct. 12, 2009	SD	S	1,000	$13.61	$13,610	45,413 Direct	-2.15%	Disposed	6.8% (price as of 2026-08-19)
Oct. 12, 2009	SD	S	1,000	$13.60	$13,600	44,413 Direct	-2.20%	Disposed	6.8% (price as of 2026-08-19)
Oct. 7, 2009	SD	A	2,386	$13.08	$31,209	46,812 Direct	+5.37%	Acquired	11.1% (price as of 2026-08-19)
Oct. 7, 2009	SD	F	399	$13.08	$5,219	46,413 Direct	-0.85%	Disposed	11.1% (price as of 2026-08-19)
July 11, 2009	SD	F	239	$8.77	$2,096	44,825 Direct	-0.53%	Disposed	65.7% (price as of 2026-08-19)
July 11, 2009	SD	F	399	$8.77	$3,499	44,426 Direct	-0.89%	Disposed	65.7% (price as of 2026-08-19)
July 10, 2009	SD	A	10,000	—	—	45,064 Direct	+28.52%	Acquired	(price as of 2026-08-19)
July 9, 2009	SD	S	1,000	$8.20	$8,200	36,596 Direct	-2.66%	Disposed	77.2% (price as of 2026-08-19)
July 9, 2009	SD	S	332	$8.62	$2,862	36,264 Direct	-0.91%	Disposed	68.6% (price as of 2026-08-19)
July 9, 2009	SD	S	1,200	$8.62	$10,344	35,064 Direct	-3.31%	Disposed	68.6% (price as of 2026-08-19)
July 1, 2009	SD	A	1,409	$8.61	$12,131	37,596 Direct	+3.89%	Acquired	68.8% (price as of 2026-08-19)
March 30, 2009	SD	A	1,819	$6.57	$11,951	36,187 Direct	+5.29%	Acquired	121.2% (price as of 2026-08-19)
Feb. 28, 2009	SD	F	399	$6.76	$2,697	34,368 Direct	-1.15%	Disposed	114.9% (price as of 2026-08-19)
Jan. 11, 2009	SD	F	319	$7.85	$2,504	34,767 Direct	-0.91%	Disposed	85.1% (price as of 2026-08-19)

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. 19, 2015	SD	Common Stock	Common Stock (95,998)	—	—	95,998	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
Jan. 26, 2009	SD	Common Stock	35,086	Direct
Jan. 26, 2009	SD	Common Stock	904	Indirect
Jan. 13, 2009	SD	Common Stock	30,000	Direct