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CIK 0001851961 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company

GCT Semiconductor Holding, Inc.

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Ticker
GCTS
Exchange
NYSE
Industry
Semiconductors & Related Devices
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
862171699
Phone
408-434-6040
Business address
2290 NORTH 1ST STREET, SUITE 201, SAN JOSE, CA, 95131
Former names
Concord Acquisition Corp III

Securities

  • GCTS GCT Semiconductor Holding, Inc. Common Stock NYSE
  • GCTS-WT Warrants NYSE
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 6 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2025-03-31 Barker Robert Director Grant or award +16,768 58,865
2025-03-31 Shin Hyunsoo Director Grant or award +16,768 84,248
2025-03-31 Chun Kukjin Director Grant or award +16,768 45,791
2025-03-31 Lee Kyeongho Director Grant or award +16,768 1,003,277
2025-03-31 TUDER JEFFREY Director Grant or award +16,768 42,056
2025-03-31 Chan Nelson Director Grant or award +16,768 42,056
2025-03-26 TUDER JEFFREY Director Other acquisition +16,289 58,345
2025-03-26 TUDER JEFFREY Director Other acquisition · Warrants +20,734 0
2025-03-26 Concord Sponsor Group III LLC 10% owner Other disposition −3,101,241 632,586
2025-03-26 Concord Sponsor Group III LLC 10% owner Other disposition · Warrant −3,948,086 0
2025-02-19 Sum Alex Sr. VP of Sales and Marketing Option exercise +13,259 $0.11 $1K 108,743
2025-02-19 Sum Alex Sr. VP of Sales and Marketing Option exercise · Stock Option (Right to Buy) −13,259 0
2025-01-13 Schlaefer John President, CEO & Class III Dir Option exercise +35,669 $0.11 $4K 127,173
2025-01-13 Schlaefer John President, CEO & Class III Dir Option exercise · Stock Option (Right to Buy) −35,669 0
2024-12-31 TUDER JEFFREY Director Grant or award +11,802 25,288
2024-12-31 Shin Hyunsoo Director Grant or award +11,802 67,693
2024-12-31 Lee Kyeongho Director Grant or award +11,802 1,697,279
2024-12-31 Chun Kukjin Director Grant or award +11,802 28,964
2024-12-31 CHAN NELSON C Director Grant or award +11,802 25,288
2024-12-31 Barker Robert Director Grant or award +11,802 41,162

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