Tai Keung Chung

Insider

First SEC filing: April 19, 2010 · Latest: April 19, 2010

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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

TTMI selling Aug. 2, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 16 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

16 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 2, 2021	TTMI	S	17,862	$14.09	$251,676	26,392 Direct	-40.36%	Disposed	708.2% (price as of 2026-08-21)
May 21, 2021	TTMI	S	6,493	$15.10	$98,044	44,254 Direct	-12.79%	Disposed	654.1% (price as of 2026-08-21)
Aug. 26, 2020	TTMI	S	41,146	$11.94	$491,283	50,747 Direct	-44.78%	Disposed	853.7% (price as of 2026-08-21)
June 22, 2020	TTMI	A	25,588	—	—	91,893 Direct	+38.59%	Acquired	(price as of 2026-08-21)
Feb. 20, 2020	TTMI	A	17,787	—	—	66,305 Direct	+36.66%	Acquired	(price as of 2026-08-21)
Aug. 19, 2019	TTMI	S	29,839	$10.58	$315,697	48,518 Direct	-38.08%	Disposed	976.3% (price as of 2026-08-21)
June 20, 2019	TTMI	A	28,000	—	—	78,357 Direct	+55.60%	Acquired	(price as of 2026-08-21)
Aug. 6, 2018	TTMI	S	23,345	$18.90	$441,220	50,357 Direct	-31.67%	Disposed	502.5% (price as of 2026-08-21)
March 29, 2018	TTMI	A	19,480	—	—	73,702 Direct	+35.93%	Acquired	(price as of 2026-08-21)
March 1, 2018	TTMI	S	29,636	$15.92	$471,805	54,222 Direct	-35.34%	Disposed	615.3% (price as of 2026-08-21)
Feb. 28, 2018	TTMI	S	75,688	$16.24	$1,229,173	83,858 Direct	-47.44%	Disposed	601.2% (price as of 2026-08-21)
Feb. 13, 2018	TTMI	A	87,175	—	—	159,546 Direct	+120.46%	Acquired	(price as of 2026-08-21)
May 8, 2017	TTMI	S	90,000	$16.48	$1,483,200	72,371 Direct	-55.43%	Disposed	591.0% (price as of 2026-08-21)
March 17, 2017	TTMI	A	22,596	—	—	162,371 Direct	+16.17%	Acquired	(price as of 2026-08-21)
March 1, 2017	TTMI	A	51,359	—	—	139,775 Direct	+58.09%	Acquired	(price as of 2026-08-21)
Feb. 13, 2017	TTMI	S	12,342	$17.29	$213,393	88,416 Direct	-12.25%	Disposed	558.6% (price as of 2026-08-21)
Aug. 1, 2016	TTMI	S	70,000	$10.46	$732,200	100,758 Direct	-40.99%	Disposed	988.6% (price as of 2026-08-21)
March 2, 2016	TTMI	A	47,440	—	—	170,758 Direct	+38.47%	Acquired	(price as of 2026-08-21)
Feb. 3, 2016	TTMI	A	35,538	—	—	123,318 Direct	+40.49%	Acquired	(price as of 2026-08-21)
Nov. 2, 2015	TTMI	S	150,000	$7.65	$1,147,500	87,780 Direct	-63.08%	Disposed	1388.5% (price as of 2026-08-21)
May 27, 2015	TTMI	S	66,500	$9.76	$649,040	237,780 Direct	-21.85%	Disposed	1066.7% (price as of 2026-08-21)
May 26, 2015	TTMI	S	33,500	$9.70	$324,950	304,280 Direct	-9.92%	Disposed	1073.9% (price as of 2026-08-21)
Feb. 25, 2015	TTMI	A	44,118	—	—	337,780 Direct	+15.02%	Acquired	(price as of 2026-08-21)
Feb. 10, 2015	TTMI	S	10,644	$8.10	$86,216	293,662 Direct	-3.50%	Disposed	1305.8% (price as of 2026-08-21)
Feb. 9, 2015	TTMI	S	109,356	$7.95	$869,380	304,306 Direct	-26.44%	Disposed	1332.3% (price as of 2026-08-21)
Nov. 14, 2014	TTMI	S	128,608	$6.79	$873,248	413,662 Direct	-23.72%	Disposed	1577.0% (price as of 2026-08-21)
Nov. 13, 2014	TTMI	S	11,392	$6.91	$78,719	542,270 Direct	-2.06%	Disposed	1547.9% (price as of 2026-08-21)
May 28, 2014	TTMI	S	89,396	$7.65	$683,879	553,662 Direct	-13.90%	Disposed	1388.5% (price as of 2026-08-21)
May 27, 2014	TTMI	S	30,604	$7.64	$233,815	643,058 Direct	-4.54%	Disposed	1390.4% (price as of 2026-08-21)
Feb. 19, 2014	TTMI	A	18,704	—	—	673,662 Direct	+2.86%	Acquired	(price as of 2026-08-21)
Feb. 19, 2014	TTMI	A	34,692	—	—	654,958 Direct	+5.59%	Acquired	(price as of 2026-08-21)
Feb. 28, 2013	TTMI	A	34,615	—	—	620,266 Direct	+5.91%	Acquired	(price as of 2026-08-21)
March 1, 2012	TTMI	A	28,050	—	—	585,651 Direct	+5.03%	Acquired	(price as of 2026-08-21)
May 18, 2011	TTMI	S	200,000	$16.66	$3,332,000	557,601 Direct	-26.40%	Disposed	583.5% (price as of 2026-08-21)
March 9, 2011	TTMI	A	22,959	—	—	732,143 Direct	+3.24%	Acquired	(price as of 2026-08-21)
Nov. 26, 2010	TTMI	S	45,270	$13.07	$591,679	709,184 Direct	-6.00%	Disposed	771.2% (price as of 2026-08-21)
Nov. 24, 2010	TTMI	S	93,230	$12.98	$1,210,125	754,454 Direct	-11.00%	Disposed	777.3% (price as of 2026-08-21)
Nov. 24, 2010	TTMI	S	41,500	$12.93	$536,595	847,684 Direct	-4.67%	Disposed	780.7% (price as of 2026-08-21)
Oct. 14, 2010	TTMI	A	25,458	—	—	757,601 Direct	+3.48%	Acquired	(price as of 2026-08-21)

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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
April 19, 2010	TTMI	Common Stock	889,184	Indirect