GDYN · Insider trading · 13F holders · Congress trades
Grid Dynamics Holdings, Inc. (GDYN)
Who is buying and selling GDYN: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 5
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $116K
- Congress trades, 12 months
- 0
GDYN at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 GDYN insider filed 5 sales worth $116K on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
- 5 13F filers hold GDYN among their 50 largest positions, worth $9.8M combined. The biggest bets by portfolio weight are S Squared Technology, LLC (1.1%), Summit Creek Advisors LLC (0.8%) and 1492 Capital Management LLC (0.7%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
- No member of Congress has disclosed a trade in GDYN.
- GDYN last closed at $9.49 on Oct 29, 2026.
GDYN insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 GDYN insider filed 5 sales worth $116K on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 8, 2026 | Gryzlov Yury | CHIEF OPERATING OFFICER | Sale10b5-1 | 4,849 | $8.00 | $39K | SEC |
| Oct 5, 2026 | Gryzlov Yury | CHIEF OPERATING OFFICER | Sale10b5-1 | 1,245 | $8.46 | $11K | SEC |
| Sep 3, 2026 | Gryzlov Yury | CHIEF OPERATING OFFICER | Sale10b5-1 | 3,918 | $8.00 | $31K | SEC |
| Aug 19, 2026 | Gryzlov Yury | CHIEF OPERATING OFFICER | Sale10b5-1 | 467 | $7.53 | $4K | SEC |
| Aug 13, 2026 | Gryzlov Yury | CHIEF OPERATING OFFICER | Sale10b5-1 | 3,930 | $8.00 | $31K | SEC |
Who owns GDYN? Hedge funds and superinvestors
5 13F filers hold GDYN among their 50 largest positions, worth $9.8M combined. The biggest bets by portfolio weight are S Squared Technology, LLC (1.1%), Summit Creek Advisors LLC (0.8%) and 1492 Capital Management LLC (0.7%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| S Squared Technology, LLCHedge fund | 1.1% | $3.6M | 636,737 | +0.0% shares | Q2 2026 |
| Summit Creek Advisors LLCInstitutional asset manager | 0.8% | $2.5M | 431,671 | -47.3% shares | Q2 2026 |
| 1492 Capital Management LLCWealth manager | 0.7% | $2.3M | 412,258 | -6.7% shares | Q2 2026 |
| SummerHaven Investment Management, LLCAsset manager | 0.7% | $1.2M | 155,795 | — | Q3 2026 |
| Quaker Capital Investments, LLCAsset manager | 0.0% | $170K | 30,000 | New | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 4). Screen GDYN in the grand portfolio →
GDYN stock trades by members of Congress
No member of Congress has disclosed a trade in GDYN.
GDYN questions and answers
Are insiders buying GDYN stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 GDYN insider filed 5 sales worth $116K on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own GDYN?
5 13F filers hold GDYN among their 50 largest positions, worth $9.8M combined. The biggest bets by portfolio weight are S Squared Technology, LLC (1.1%), Summit Creek Advisors LLC (0.8%) and 1492 Capital Management LLC (0.7%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
Has Congress traded GDYN?
No member of Congress has disclosed a trade in GDYN.
Who is the largest holder of GDYN?
Among 13F filers, S Squared Technology, LLC reports the largest GDYN position, $3.6M (636,737 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is S Squared Technology, LLC's: 1.1% of its portfolio.
Cite or share this
Free to use with a link back. The data updates every filing day.