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GCT Semiconductor Holding, Inc.

GCTS Net buying

CIK 0001851961 #3997 in the set updated 21 Sep 2026

Bought (120 mo)

$2.99M

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

Sold (120 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

+$2.99M

+$2.99M against sales at will

By person

16 insiders · 17 transactions

Insider

Role

Bought

Sold

Net

Holding

Worth

Change

Anapass, Inc. entity

10% owner

$2.24M (1)

—

+$2.24M

8,017,466

$10.26M

—

Shin Hyunsoo

Director

$746.39K (14)

—

+$746.39K

814,068

$1.04M

+81,406,700%

Concord Sponsor Group III LLC entity

10% owner

—

8,590,312

$11.00M

+28.2%

Lee Kyeongho

Director

—

1,096,122

$1.40M

+109,612,100%

Kim Jeong-Min

Chief Technology Officer

—

402,701

$515.46K

+40,270,000%

Schlaefer John

President, CEO & Class III Dir

—

352,728

$451.49K

—

Cheng Edmond

Chief Financial Officer

—

296,000

$378.88K

—

Sum Alex

Sr. VP of Sales and Marketing

—

258,743

$331.19K

+25,874,200%

Barker Robert

Director

—

151,710

$194.19K

+15,170,900%

TUDER JEFFREY

Director

—

151,190

$193.52K

—

Chan Nelson

Director

—

134,901

$172.67K

—

Chun Kukjin

Director

—

98,636

$126.25K

—

LEIBOWITZ LAWRENCE E

Director

—

30,000

$38.40K

—

KING THOMAS C.

Director

—

30,000

$38.40K

—

Ort Peter

Director

—

30,000

$38.40K

—

Yoon David

Vice President of Finance

—

8,204

$10.50K

—

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

Nothing of that kind in this period.

What was left out

Form 4 filings counted 94

Amendments (4/A) skipped 6

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 24,628,548

History held since 17 Nov 2023