Total buying$00 buys
GCTS
GCT Semiconductor Holding, Inc.
NYSETechnologySemiconductors & Related Devices
Insider activity for last month from 09/19 to 10/19.
How these metrics are calculated
Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total selling$00 sells
Net open-market+$0Buying minus selling
Active insiders6Distinct reporting owners
Insider activity report
Calendar-month buckets within the selected date range
Latest filing: Oct 02, 2026
Open-market transaction mix · 0 transactions in the selected period
Code A includes awards, grants and other acquisitions; these are not open-market buys. A rolling period can include partial calendar months.
View exact monthly counts and disclosed values
| Month | Buys | Sells | Awards (A) | Buy value | Sell value | Net P/S value |
|---|---|---|---|---|---|---|
| Sep 2026 | 0 | 0 | 6 | $0 | $0 | $0 |
| Oct 2026 | 0 | 0 | 0 | $0 | $0 | $0 |
Distinct insiders active
Reporting-owner CIKs by month · peak Sep 2026 (6)Sep 2026Oct 2026
Largest insider activity
By absolute net disclosed value · current transaction page- LK+$0
- BR+$0
- TJ+$0
- CN+$0
- CK+$0
GCTS transaction history
Newest filings · 20 transactions per pageLatest insider transactions
Form 4 filings from last month.| Company | Insider | Activity | Disclosed value | Filed (ET) |
|---|---|---|---|---|
GCTSGCT Semiconductor Holding, Inc. | Lee KyeonghoDIR | A · grantSEC filing ↗ | $0View disclosure → | |
GCTSGCT Semiconductor Holding, Inc. | Barker RobertDIR | A · grantSEC filing ↗ | $0View disclosure → | |
GCTSGCT Semiconductor Holding, Inc. | Tuder JeffreyDIR | A · grantSEC filing ↗ | $0View disclosure → | |
GCTSGCT Semiconductor Holding, Inc. | Chan NelsonDIR | A · grantSEC filing ↗ | $0View disclosure → | |
GCTSGCT Semiconductor Holding, Inc. | Chun KukjinDIR | A · grantSEC filing ↗ | $0View disclosure → | |
GCTSGCT Semiconductor Holding, Inc. | Shin HyunsooDIR | A · grantSEC filing ↗ | $0View disclosure → |
Filing-only signals
Deterministic matches in the selected period
Filing detail checks
Secondary metrics for the selected periodTransaction codes
By Form 4 transaction code in selected period6transactionstxns
- A · Grants / awards · dominant6 · 100%
Activity by reported role
A joint filing can contribute to multiple rolesDirector6
Reported Holdings After
Separated by insider, security, and ownership type
Shin HyunsooCommon Stock · Direct
827,039Sep 30, 2026
Chun KukjinCommon Stock · Direct
111,607Sep 30, 2026
Chan NelsonCommon Stock · Direct
147,872Sep 30, 2026
Tuder JeffreyCommon Stock · Direct
164,161Sep 30, 2026
Barker RobertCommon Stock · Direct
164,681Sep 30, 2026
Lee KyeonghoCommon Stock · Direct
1,109,093Sep 30, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Current transaction page only · each cell is a filing date · buys green, sells redSep 19 → Oct 19
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GCT Semiconductor Holding, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at GCT Semiconductor Holding, Inc.?
Lee Kyeongho, Barker Robert, TUDER JEFFREY, Chan Nelson, Chun Kukjin, Shin Hyunsoo.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
No code-S sale is available for this period.
What is the recent purchase and sale balance?
No code-P purchases or code-S sales were reported in the selected period.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.