Kukjin Chun
CIK 2007838 · View on SEC EDGAR ↗
Insider
First SEC filing: Nov. 21, 2024 · Latest: Nov. 21, 2024
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 12 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 30, 2026 | GCTS | A | 9,259 | — | — | 98,636 Direct | +10.36% | Acquired | (price as of 2026-08-21) |
| March 31, 2026 | GCTS | A | 24,122 | — | — | 89,377 Direct | +36.97% | Acquired | (price as of 2026-08-21) |
| Feb. 23, 2026 | GCTS | G | 40,000 | — | — | 65,255 Direct | -38.00% | Disposed | (price as of 2026-08-21) |
| Dec. 31, 2025 | GCTS | A | 22,916 | — | — | 105,255 Direct | +27.83% | Acquired | (price as of 2026-08-21) |
| Sept. 30, 2025 | GCTS | A | 18,092 | — | — | 82,339 Direct | +28.16% | Acquired | (price as of 2026-08-21) |
| June 30, 2025 | GCTS | A | 18,456 | — | — | 64,247 Direct | +40.30% | Acquired | (price as of 2026-08-21) |
| March 31, 2025 | GCTS | A | 16,768 | — | — | 45,791 Direct | +57.77% | Acquired | (price as of 2026-08-21) |
| Dec. 31, 2024 | GCTS | A | 11,802 | — | — | 28,964 Direct | +68.77% | Acquired | (price as of 2026-08-21) |
| Sept. 30, 2024 | GCTS | A | 8,208 | — | — | 17,162 Direct | +91.67% | Acquired | (price as of 2026-08-21) |
| June 30, 2024 | GCTS | A | 5,278 | — | — | 8,954 Direct | +143.58% | Acquired | (price as of 2026-08-21) |
| March 26, 2024 | GCTS | A | 6,536 | — | — | 6,536 Direct | — | Acquired | (price as of 2026-08-21) |
| March 26, 2024 | GCTS | A | 3,735 | — | — | 3,735 Direct | — | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 26, 2024 | GCTS | Stock Option (Right to Buy) | Common Stock (6,536) | $0.11 | March 22, 2032 | 6,536 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).