Insider Transactions Reported by 18 Insiders of GCT Semiconductor Holding, Inc.

Symbol
GCTS, GCTS-WT on NYSE
Location
San Jose, CA

Insiders trading volume in the past year

GCT Semiconductor Holding, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Anapass, Inc. 10%+ Owner $24,212,747 26 Sep 2024
Kyeongho Lee Director, Chairman & Class III Director $1,583,484 31 Dec 2025
Hyunsoo Shin Director, Class II Director $1,163,223 +$746,391 +179% 31 Dec 2025
Jeong-Min Kim Chief Technology Officer $408,646 19 Sep 2025
John Schlaefer President, CEO & Class III Dir, Director $273,682 26 Sep 2025
Alex Sum Sr. VP of Sales and Marketing $248,053 19 Sep 2025
Edmond Cheng Chief Financial Officer $203,850 19 Sep 2025
Robert Barker Director, Class II Director $176,310 31 Dec 2025
Jeffrey Tuder Director, Class III Director $175,535 31 Dec 2025
Nelson Chan Director, Class I Director $151,264 31 Dec 2025
Kukjin Chun Director, Class I Director $80,916 23 Feb 2026
Concord Sponsor Group III LLC 10%+ Owner $69,584 26 Mar 2025
Peter Ort Director 16 Nov 2023
Robert E. Diamond Jr. Director 03 Nov 2021
Michele Cito Chief Financial Officer 03 Nov 2021
Thomas C. King Director 16 Nov 2023
David Yoon Vice President of Finance 26 Mar 2024
Lawrence E. Leibowitz Director 16 Nov 2023

Recent Insider Transactions by Companies or Individuals for GCT Semiconductor Holding, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Kukjin Chun GCTS Common Stock Gift -38% -40,000 65,255 23 Feb 2026 Direct
Jeffrey Tuder GCTS Common Stock Award 24.2% 22,916 117,809 31 Dec 2025 Direct
Robert Barker GCTS Common Stock Award 24% 22,916 118,329 31 Dec 2025 Direct
Nelson Chan GCTS Common Stock Award 29.2% 22,916 101,520 31 Dec 2025 Direct
Kukjin Chun GCTS Common Stock Award 27.8% 22,916 105,255 31 Dec 2025 Direct
Kyeongho Lee GCTS Common Stock Award 2.2% 22,916 1,062,741 31 Dec 2025 Direct
Hyunsoo Shin GCTS Common Stock Award 3.02% 22,916 780,687 31 Dec 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 2.26% $21,408 $1.28 16,725 757,771 25 Nov 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 0.43% $4,070 $1.28 3,180 741,046 21 Nov 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 3.57% $32,580 $1.28 25,453 737,866 20 Nov 2025 Direct
Jeffrey Tuder GCTS Common Stock Award 23.6% 18,092 94,893 30 Sep 2025 Direct
Hyunsoo Shin GCTS Common Stock Award 2.61% 18,092 712,413 30 Sep 2025 Direct
Kyeongho Lee GCTS Common Stock Award 1.77% 18,092 1,039,825 30 Sep 2025 Direct
Kukjin Chun GCTS Common Stock Award 28.2% 18,092 82,339 30 Sep 2025 Direct
Nelson Chan GCTS Common Stock Award 29.9% 18,092 78,604 30 Sep 2025 Direct
Robert Barker GCTS Common Stock Award 23.4% 18,092 95,413 30 Sep 2025 Direct
John Schlaefer GCTS Common Stock, par value $0.0001 per share Other 0.27% 555 202,728 26 Sep 2025 Direct
Jeemee Kim GCTS Common Stock, par value $0.0001 per share Award 32.9% 75,000 302,701 19 Sep 2025 Direct
John Schlaefer GCTS Common Stock, par value $0.0001 per share Award 59% 75,000 202,173 19 Sep 2025 Direct
Edmond Cheng GCTS Common Stock, par value $0.0001 per share Award 98.7% 75,000 151,000 19 Sep 2025 Direct
Alex Sum GCTS Common Stock, par value $0.0001 per share Award 69% 75,000 183,743 19 Sep 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 6.78% $66,541 $1.51 44,067 694,321 12 Sep 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 1.61% $13,390 $1.30 10,300 650,254 05 Sep 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 1.31% $10,395 $1.26 8,250 639,954 04 Sep 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 23.7% $152,460 $1.26 121,000 631,704 15 Aug 2025 Direct
Jeffrey Tuder GCTS Common Stock Award 31.6% 18,456 76,801 30 Jun 2025 Direct
Hyunsoo Shin GCTS Common Stock Award 3.75% 18,456 510,704 30 Jun 2025 Direct
Kyeongho Lee GCTS Common Stock Award 1.84% 18,456 1,021,733 30 Jun 2025 Direct
Kukjin Chun GCTS Common Stock Award 40.3% 18,456 64,247 30 Jun 2025 Direct
Nelson Chan GCTS Common Stock Award 43.9% 18,456 60,512 30 Jun 2025 Direct
Robert Barker GCTS Common Stock Award 31.4% 18,456 77,321 30 Jun 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 20.9% $100,200 $1.18 85,000 492,248 10 Jun 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 24.4% $82,187 $1.03 80,000 407,248 05 Jun 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 32.4% $81,600 $1.02 80,000 327,248 04 Jun 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 45.2% $80,080 $1.04 77,000 247,248 23 May 2025 Direct
Hyunsoo Shin GCTS Common Stock Purchase 102.1% $101,480 $1.18 86,000 170,248 20 May 2025 Direct
Robert Barker GCTS Common Stock Award 39.8% 16,768 58,865 31 Mar 2025 Direct
Hyunsoo Shin GCTS Common Stock Award 24.8% 16,768 84,248 31 Mar 2025 Direct
Kukjin Chun GCTS Common Stock Award 57.8% 16,768 45,791 31 Mar 2025 Direct
Kyeongho Lee GCTS Common Stock Award 1.7% 16,768 1,003,277 31 Mar 2025 Direct
Jeffrey Tuder GCTS Common Stock Award 66.3% 16,768 42,056 31 Mar 2025 Direct
Nelson Chan GCTS Common Stock Award 66.3% 16,768 42,056 31 Mar 2025 Direct
Jeffrey Tuder GCTS Common Stock Other 38.7% 16,289 58,345 26 Mar 2025 Direct
Jeffrey Tuder GCTS Warrants Other 20,734 0 26 Mar 2025 Direct
Concord Sponsor Group III LLC GCTS Common Stock Other -83.1% -3,101,241 632,586 26 Mar 2025 Direct
Concord Sponsor Group III LLC GCTS Warrant Other -100% -3,948,086 0 26 Mar 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.