Paul Yoonku Cho

Insider

First SEC filing: June 2, 2026 · Latest: June 4, 2026

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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

UCTT selling June 2, 2026

Insider transactions

0 buys (P) 2 sells (S) Net: $-258,145 + 39 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

39 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 2, 2026	UCTT	S	944	$89.37	$84,365	22,941 Direct	-3.95%	Disposed	-17.0% (price as of 2026-08-21)
May 22, 2026	UCTT	A	8,041	—	—	23,885 Direct	+50.75%	Acquired	(price as of 2026-08-21)
May 8, 2026	UCTT	S	2,000	$86.89	$173,780	15,844 Direct	-11.21%	Disposed	-14.6% (price as of 2026-08-21)
April 30, 2026	UCTT	F	2,454	$78.15	$191,780	17,844 Direct	-12.09%	Disposed	-5.1% (price as of 2026-08-21)
April 30, 2026	UCTT	F	1,465	$78.15	$114,490	20,298 Direct	-6.73%	Disposed	-5.1% (price as of 2026-08-21)
April 30, 2026	UCTT	F	1,582	$78.15	$123,633	21,763 Direct	-6.78%	Disposed	-5.1% (price as of 2026-08-21)
June 6, 2025	UCTT	S	4,084	$21.06	$86,009	23,345 Direct	-14.89%	Disposed	252.2% (price as of 2026-08-21)
April 30, 2025	UCTT	F	995	$18.71	$18,616	27,429 Direct	-3.50%	Disposed	296.5% (price as of 2026-08-21)
April 30, 2025	UCTT	F	1,462	$18.71	$27,354	28,424 Direct	-4.89%	Disposed	296.5% (price as of 2026-08-21)
April 30, 2025	UCTT	F	1,579	$18.71	$29,543	29,886 Direct	-5.02%	Disposed	296.5% (price as of 2026-08-21)
April 25, 2025	UCTT	A	14,472	—	—	31,465 Direct	+85.16%	Acquired	(price as of 2026-08-21)
March 31, 2025	UCTT	F	173	$21.41	$3,704	16,993 Direct	-1.01%	Disposed	246.5% (price as of 2026-08-21)
May 17, 2024	UCTT	S	3,449	$44.79	$154,481	17,166 Direct	-16.73%	Disposed	65.6% (price as of 2026-08-21)
April 30, 2024	UCTT	F	1,576	$41.83	$65,924	20,615 Direct	-7.10%	Disposed	77.3% (price as of 2026-08-21)
April 30, 2024	UCTT	F	614	$41.83	$25,684	22,191 Direct	-2.69%	Disposed	77.3% (price as of 2026-08-21)
April 30, 2024	UCTT	F	993	$41.83	$41,537	22,805 Direct	-4.17%	Disposed	77.3% (price as of 2026-08-21)
April 26, 2024	UCTT	A	8,644	—	—	23,798 Direct	+57.04%	Acquired	(price as of 2026-08-21)
March 31, 2024	UCTT	F	173	$45.94	$7,948	15,154 Direct	-1.13%	Disposed	61.5% (price as of 2026-08-21)
March 31, 2024	UCTT	F	183	$45.94	$8,407	15,327 Direct	-1.18%	Disposed	61.5% (price as of 2026-08-21)
March 31, 2024	UCTT	A	363	—	—	15,510 Direct	+2.40%	Acquired	(price as of 2026-08-21)
Dec. 4, 2023	UCTT	S	4,689	$28.38	$133,074	15,147 Direct	-23.64%	Disposed	161.4% (price as of 2026-08-21)
May 26, 2023	UCTT	S	176	$36.10	$6,354	19,836 Direct	-0.88%	Disposed	105.5% (price as of 2026-08-21)
April 30, 2023	UCTT	F	951	$28.54	$27,142	20,012 Direct	-4.54%	Disposed	159.9% (price as of 2026-08-21)
April 30, 2023	UCTT	F	235	$28.54	$6,707	20,963 Direct	-1.11%	Disposed	159.9% (price as of 2026-08-21)
April 30, 2023	UCTT	F	588	$28.54	$16,782	21,198 Direct	-2.70%	Disposed	159.9% (price as of 2026-08-21)
April 30, 2023	UCTT	F	1,988	$28.54	$56,738	21,786 Direct	-8.36%	Disposed	159.9% (price as of 2026-08-21)
April 30, 2023	UCTT	F	662	$28.54	$18,893	23,774 Direct	-2.71%	Disposed	159.9% (price as of 2026-08-21)
April 28, 2023	UCTT	A	9,330	—	—	24,436 Direct	+61.76%	Acquired	(price as of 2026-08-21)
March 31, 2023	UCTT	F	166	$33.16	$5,505	15,106 Direct	-1.09%	Disposed	123.7% (price as of 2026-08-21)
Nov. 3, 2022	UCTT	S	2,949	$29.41	$86,730	15,272 Direct	-16.18%	Disposed	152.2% (price as of 2026-08-21)
Oct. 31, 2022	UCTT	F	2,785	$31.11	$86,641	18,221 Direct	-13.26%	Disposed	138.4% (price as of 2026-08-21)
May 11, 2022	UCTT	S	3,536	$30.41	$107,530	21,006 Direct	-14.41%	Disposed	143.9% (price as of 2026-08-21)
April 30, 2022	UCTT	F	599	$31.17	$18,671	24,542 Direct	-2.38%	Disposed	138.0% (price as of 2026-08-21)
April 30, 2022	UCTT	F	239	$31.17	$7,450	25,141 Direct	-0.94%	Disposed	138.0% (price as of 2026-08-21)
April 29, 2022	UCTT	A	5,879	—	—	25,380 Direct	+30.15%	Acquired	(price as of 2026-08-21)
April 24, 2022	UCTT	F	2,112	$33.56	$70,879	19,501 Direct	-9.77%	Disposed	121.0% (price as of 2026-08-21)
April 24, 2022	UCTT	F	667	$33.56	$22,385	21,613 Direct	-2.99%	Disposed	121.0% (price as of 2026-08-21)
March 25, 2022	UCTT	A	1,026	—	—	22,280 Direct	+4.83%	Acquired	(price as of 2026-08-21)
Nov. 3, 2021	UCTT	S	9,247	$55.24	$510,804	21,254 Direct	-30.32%	Disposed	34.3% (price as of 2026-08-21)
Oct. 25, 2021	UCTT	F	2,982	$42.98	$128,166	30,501 Direct	-8.91%	Disposed	72.6% (price as of 2026-08-21)
April 30, 2021	UCTT	A	3,637	—	—	32,514 Direct	+12.59%	Acquired	(price as of 2026-08-21)
April 30, 2021	UCTT	A	969	—	—	33,483 Direct	+2.98%	Acquired	(price as of 2026-08-21)
April 24, 2021	UCTT	F	2,119	$54.11	$114,659	28,877 Direct	-6.84%	Disposed	37.1% (price as of 2026-08-21)
April 24, 2021	UCTT	F	646	$54.11	$34,955	30,996 Direct	-2.04%	Disposed	37.1% (price as of 2026-08-21)
Feb. 10, 2021	UCTT	A	4,092	—	—	31,642 Direct	+14.85%	Acquired	(price as of 2026-08-21)
Oct. 25, 2020	UCTT	F	1,929	$23.58	$45,486	27,550 Direct	-6.54%	Disposed	214.6% (price as of 2026-08-21)
April 24, 2020	UCTT	A	12,278	—	—	29,479 Direct	+71.38%	Acquired	(price as of 2026-08-21)
Oct. 25, 2019	UCTT	A	17,201	—	—	17,201 Direct	—	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
June 2, 2026	KEYY	Class B Ordinary Shares→ Class A Ordinary Shares (25,000)	25,000	Direct