Public ownership evidence

Grid Dynamics Holdings, Inc. Class A Common Stock (GDYN) Ownership Disclosures

Read GDYN insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Grid Dynamics Holdings, Inc. Class A Common Stock: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-10-08
Trade date
2026-10-08
Reporting owners
Gryzlov Yury
Code
S
Shares
4,849
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001628280-26-065478
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read GDYN fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read GDYN fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity

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2026-10-082026-10-08Gryzlov YuryS4,849Not reported
2026-10-052026-10-02Gryzlov YuryS1,245Not reported
2026-09-042026-09-03Gryzlov YuryS3,918Not reported
2026-08-202026-08-18Gryzlov YuryS467Not reported
2026-08-142026-08-13Gryzlov YuryS3,930Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Advisors Asset Management, Inc.2022-12-312026-08-281,675$18,794None
Advisors Asset Management, Inc.2022-06-302026-08-281,574$26,000None
Advisors Asset Management, Inc.2022-09-302026-08-271,494$28,000None
Advisors Asset Management, Inc.2022-03-312026-08-271,613$22,711None
Advisors Asset Management, Inc.2023-06-302026-08-27321$2,969None
Advisors Asset Management, Inc.2023-09-302026-08-27321$3,910None
Advisors Asset Management, Inc.2023-03-312026-08-271,552$17,786None
Advisors Asset Management, Inc.2023-12-312026-08-27271$3,612None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2569,851$396,754None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25396,754$69,851,000None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2023,180$131,663None
Ensign Peak Advisors, Inc2025-09-302026-08-1948,051$370,473None
Fulcrum Asset Management LLP2026-06-302026-08-1984$457None
Jefferies Financial Group Inc.2026-06-302026-08-1831,000$176,080None
FORMULA GROWTH LTD2026-06-302026-08-18251,896$1,430,769None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-1841,170$233,846None
Investors Portfolio Services LLC2026-06-302026-08-1559$335None
SEI INVESTMENTS CO2026-06-302026-08-15141,738$805,072None
SEI INVESTMENTS CO2026-06-302026-08-15880$5,000None
JPL Wealth Management, LLC2026-06-302026-08-155$29None
Modern Wealth Management, LLC2026-06-302026-08-1511,620$66,002None
Basecamp Wealth Advisors LLC2026-06-302026-08-1534$193None
Polymer Capital Management (US) LLC2026-06-302026-08-1515,522$88,165None
Quarry LP2026-06-302026-08-15228$1,295None
T. Rowe Price Investment Management, Inc.2026-06-302026-08-153,712,682$21,089,000None
CSM Advisors, LLC2026-06-302026-08-15755,780$4,293,000None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-15746,371$4,239,387None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-15746,371$4,239,387None
OSAIC HOLDINGS, INC.2026-06-302026-08-155$28None
OSAIC HOLDINGS, INC.2026-06-302026-08-15210$1,193None
Squarepoint Ops LLC2026-06-302026-08-15475,738$2,702,192None
Trexquant Investment LP2026-06-302026-08-15614,081$3,487,980None
MetLife Investment Management, LLC2026-06-302026-08-1537,523$213,131None
JANE STREET GROUP, LLC2026-06-302026-08-15724,117$4,112,985None
JANE STREET GROUP, LLC2026-06-302026-08-15531,994$3,021,726None
JANE STREET GROUP, LLC2026-06-302026-08-1590,700$515,176Put
JANE STREET GROUP, LLC2026-06-302026-08-1510,800$61,344Call
State of Tennessee, Department of Treasury2026-06-302026-08-1514,374$81,645None
Legal & General Group Plc2026-06-302026-08-1537,511$213,063None
Legal & General Group Plc2026-06-302026-08-159,879$56,113None
Legal & General Group Plc2026-06-302026-08-156,111$34,710None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15124,600$707,728Call
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-1591,900$521,992Put
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-15595,077$3,380,037None
Bridgefront Capital, LLC2026-06-302026-08-1514,252$80,951None
Aigen Investment Management, LP2026-06-302026-08-1529,340$166,651None
S SQUARED TECHNOLOGY, LLC2026-06-302026-08-15636,737$3,616,666None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-151,087,719$6,178,244None
Atom Investors LP2026-06-302026-08-1529,384$166,901None
Balyasny Asset Management L.P.2026-06-302026-08-1523,164$131,572None

90-day public filing window, up to 50 source positions.

Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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