G

SEC EDGAR - Form 4 insider activity

Grid Dynamics Holdings, Inc. $GDYN

Tracked equity - 5 filings indexed by Nortis

Nortis signal thesis

Cluster activity detected. Review whether the filings are open-market trades or routine compensation events.

0

OM buys - 90d

2

OM sells - 90d

3

Routine filings

5

Cluster filings

$301.4K

Largest trade

35/100

Avg signal score

Filing tape

Recent filings

Last 30d: 5
Open-market SellCLUSTERNotable 65/100
filed 2026-10-08
GYOfficer

Gryzlov Yury - CHIEF OPERATING OFFICER - $38.8K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERNotable 65/100
filed 2026-10-05
GYOfficer

Gryzlov Yury - CHIEF OPERATING OFFICER - $10.5K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Tax WithholdingCLUSTERRoutine 15/100
filed 2026-10-02
DACFO

Doradla Anil - CHIEF FINANCIAL OFFICER - $17.7K

Shares were withheld to cover taxes on vesting stock - this is routine mechanics, not a discretionary insider sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Tax WithholdingCLUSTERRoutine 15/100
filed 2026-10-02
GYOfficer

Gryzlov Yury - CHIEF OPERATING OFFICER - $14.1K

Shares were withheld to cover taxes on vesting stock - this is routine mechanics, not a discretionary insider sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Tax WithholdingCLUSTERRoutine 15/100
filed 2026-10-02
LLCEO

Livschitz Leonard - Director, CHIEF EXECUTIVE OFFICER - $301.4K

Shares were withheld to cover taxes on vesting stock - this is routine mechanics, not a discretionary insider sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing