Yury Gryzlov is COO at GRID DYNAMICS HOLDINGS, INC. (GDYN). They have made 2 open-market trades across 1 company since 2025, most recently 2026-10-08.
CIK 0001805673
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GDYN | 495,290 | $4.0M |
Shares reported on the most recent Form 4, priced at the 2026-10-08 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GDYN | SELL · 10b5-1 | 2026-10-08 | 2026-10-08 | $8.00 | $39K | — | — | — |
| GDYN | SELL · 10b5-1 | 2026-10-02 | 2026-10-05 | $8.46 | $11K | +2.6% | — | — |
| GDYN | SELL · 10b5-1 | 2026-09-03 | 2026-09-03 | $8.00 | $31K | +1.8% | -0.3% | — |
| GDYN | SELL · 10b5-1 | 2026-08-18 | 2026-08-19 | $7.53 | $4K | -0.3% | -5.2% | — |
| GDYN | SELL · 10b5-1 | 2026-08-13 | 2026-08-13 | $8.00 | $31K | +1.1% | +5.4% | — |
| GDYN | SELL · 10b5-1 | 2026-07-02 | 2026-07-02 | $6.29 | $8K | -3.7% | +14.1% | +31.9% |
| GDYN | SELL · 10b5-1 | 2026-06-01 | 2026-06-01 | $8.00 | $35K | -14.3% | -16.6% | +6.4% |
| GDYN | SELL · 10b5-1 | 2026-05-15 | 2026-05-15 | $6.45 | $3K | +11.4% | -4.4% | +19.5% |
| GDYN | SELL · 10b5-1 | 2026-04-02 | 2026-04-02 | $5.54 | $7K | +1.7% | +1.2% | +8.2% |
| GDYN | SELL | 2026-03-10 | 2026-03-12 | $6.22 | $132K | -13.2% | -15.1% | -5.8% |
| GDYN | SELL | 2025-12-05 | 2025-12-09 | $9.66 | $242K | -2.8% | +2.8% | -32.1% |
| GDYN | SELL · 10b5-1 | 2025-10-31 | 2025-11-04 | $9.00 | $7K | -6.7% | +10.1% | -5.5% |
| GDYN | SELL · 10b5-1 | 2025-07-08 | 2025-07-10 | $12.33 | $25K | -6.5% | -32.7% | -27.0% |
| GDYN | SELL · 10b5-1 | 2025-07-02 | 2025-07-03 | $11.82 | $9K | -9.9% | -33.9% | -36.0% |
| GDYN | SELL · 10b5-1 | 2025-06-03 | 2025-06-05 | $12.00 | $24K | -5.3% | +1.3% | -32.5% |
| GDYN | SELL · 10b5-1 | 2025-05-06 | 2025-05-08 | $13.22 | $26K | -2.1% | -14.0% | -43.8% |
| GDYN | SELL · 10b5-1 | 2025-04-08 | 2025-04-09 | $13.97 | $28K | -8.9% | -2.9% | -14.8% |
| GDYN | SELL · 10b5-1 | 2025-04-03 | 2025-04-07 | $14.80 | $11K | -6.5% | -4.6% | -11.8% |
| GDYN | SELL · 10b5-1 | 2025-03-11 | 2025-03-13 | $16.77 | $34K | +1.0% | -17.5% | -25.7% |
| GDYN | SELL · 10b5-1 | 2025-03-04 | 2025-03-06 | $18.66 | $385K | -8.9% | -24.8% | -32.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.