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GCT Semiconductor Holding, Inc.

GCTS Net buying

CIK 0001851961 #3997 in the set updated 21 Sep 2026

Bought (12 mo)

$58.06K

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$0.00

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 0 sales

Net

+$58.06K

+$58.06K against sales at will

By person

12 insiders · 3 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Shin Hyunsoo

Director

$58.06K (3)

—

+$58.06K

814,068

0.8851%

$1.04M

+8,496%

Anapass, Inc. entity

10% owner

—

8,017,466

8.72%

$10.26M

+10.2%

Lee Kyeongho

Director

—

1,096,122

1.19%

$1.40M

+13.4%

Concord Sponsor Group III LLC entity

10% owner

—

632,586

0.6878%

$809.71K

−83.1%

Kim Jeong-Min

Chief Technology Officer

—

402,701

0.4379%

$515.46K

+76.9%

Schlaefer John

President, CEO & Class III Dir

—

352,728

0.3835%

$451.49K

+285.5%

Cheng Edmond

Chief Financial Officer

—

296,000

0.3218%

$378.88K

+289.5%

Sum Alex

Sr. VP of Sales and Marketing

—

258,743

0.2813%

$331.19K

+171.0%

Barker Robert

Director

—

151,710

0.1650%

$194.19K

+586.9%

TUDER JEFFREY

Director

—

151,190

0.1644%

$193.52K

+2,765%

Chan Nelson

Director

—

134,901

0.1467%

$172.67K

+2,456%

Chun Kukjin

Director

—

98,636

0.1072%

$126.25K

+994.4%

Individual transactions

Insider

Date

Role

Action

Price

Amount

Shin Hyunsoo

25 Nov 2025

Director

Buy

16,725

$1.28

$21.41K

Shin Hyunsoo

21 Nov 2025

Director

Buy

3,180

$1.28

$4.07K

Shin Hyunsoo

20 Nov 2025

Director

Buy

25,453

$1.28

$32.58K

What was left out

Form 4 filings counted 36

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 956,889

History held since 17 Nov 2023