Reporting owner · CIK 0001596796
Rutten Guillaume Marie Jean
Visual SEC Form 4 history across 1 companies, 25 transactions and 10 filings.
DIRAMKOR TECHNOLOGY, INC.
Open-market mix
0%buys
Latest insider transactions
Form 4 filings from available history. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #75557 | AMKR | Rutten Guillaume Marie Jean | DIR | exercise10b5-1 | 13.9k | $0 | M | 02/18 | 02/16 |
| #75554 | AMKR | Rutten Guillaume Marie Jean | DIR | sale10b5-1 | 10.0k | -$45.8M | S | 02/18 | 02/17 |
| #75552 | AMKR | Rutten Guillaume Marie Jean | DIR | exercise10b5-1 | 13.9k | $0 | M | 02/18 | 02/16 |
| #75424 | AMKR | Rutten Guillaume Marie Jean | DIR | sale10b5-1 | 10.0k | -$53.1M | S | 01/20 | 01/15 |
| #25739 | AMKR | Rutten Guillaume Marie Jean | PRES | exercise | 8.69k | $0 | M | 01/05 | 12/31/2025 |
| #25738 | AMKR | Rutten Guillaume Marie Jean | PRES | exercise | 8.69k | $0 | M | 01/05 | 12/31/2025 |
| #155155 | AMKR | Rutten Guillaume Marie Jean | PRES | exercise | 10.7k | $0 | M | 02/26/2025 | 02/24/2025 |
| #155154 | AMKR | Rutten Guillaume Marie Jean | PRES | exercise | 10.7k | $0 | M | 02/26/2025 | 02/24/2025 |
| #143938 | AMKR | Rutten Guillaume Marie Jean | PRES | grant | 43.4k | $0 | A | 02/21/2025 | 02/20/2025 |
| #143937 | AMKR | Rutten Guillaume Marie Jean | PRES | grant | 178k | $0 | A | 02/21/2025 | 02/20/2025 |
Latest Form 4 facts
Quick context from source filings
Latest transaction
sale at AMKOR TECHNOLOGY, INC. on Feb 24, 2026 valued at $976,000.
Review SEC filingLatest buy
No open-market insider purchase is available.
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.
Disclosed ownership
How reported shareholdings evolved
Non-derivative shares held after reported transactions—not stock prices or a complete portfolio.
14 observations · Feb 14, 2025 – Feb 24, 2026. Window ends at the latest available report, not today.
Selected observation · Feb 24, 2026543,866 shares reported
Inspect transaction View exact observations and source transactions
| Transaction date | Shares held after | Filed | Source |
|---|---|---|---|
| Feb 14, 2025 | 218,891 | Feb 19, 2025 | View transaction |
| Feb 19, 2025 | 235,627 | Feb 21, 2025 | View transaction |
| Feb 20, 2025 | 348,568 | Feb 21, 2025 | View transaction |
| Feb 24, 2025 | 359,316 | Feb 26, 2025 | View transaction |
| Dec 31, 2025 | 345,391 | Jan 5, 2026 | View transaction |
| Jan 15, 2026 | 335,391 | Jan 20, 2026 | View transaction |
| Feb 16, 2026 | 349,311 | Feb 18, 2026 | View transaction |
| Feb 17, 2026 | 339,311 | Feb 18, 2026 | View transaction |
| Feb 18, 2026 | 350,202 | Feb 20, 2026 | View transaction |
| Feb 18, 2026 | 380,789 | Feb 20, 2026 | View transaction |
| Feb 20, 2026 | 493,730 | Feb 24, 2026 | View transaction |
| Feb 20, 2026 | 553,118 | Feb 24, 2026 | View transaction |
| Feb 24, 2026 | 563,866 | Feb 26, 2026 | View transaction |
| Feb 24, 2026 | 543,866 | Feb 26, 2026 | View transaction |
Securities and direct/indirect ownership contexts are kept separate and never summed. Joint filings may associate the same disclosed row with multiple owners. Unknown values are omitted, not treated as zero. Lines connect observations for readability; they do not establish holdings between filings, cost basis, or current ownership. Amendments and stock splits require reviewing the source.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Feb 25
$0
Dec 25
$0
Jan 26
−$531.4K
Feb 26
−$1.4M
Sep 26
$0
Transaction texture
Ownership and ticket size
Average P/S size$655.4K
Median P/S size$531.4K
Direct25
Indirect0
Sep 22, 2026grant
Filing-only signals
Deterministic matches in this insider's history
Associated companies
Visual map of known reporting history
Rutten Guillaume Marie Jean Insider Activity FAQ
SEC Form 4 context
Who is Rutten Guillaume Marie Jean?
Rutten Guillaume Marie Jean is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001596796.
Which companies has Rutten Guillaume Marie Jean reported transactions for?
AMKOR TECHNOLOGY, INC.
When was Rutten Guillaume Marie Jean's latest insider buy?
No open-market insider purchase is available for this period.
When was Rutten Guillaume Marie Jean's latest insider sale?
sale at AMKOR TECHNOLOGY, INC. on Feb 24, 2026 valued at $976,000.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.