GRYSKA DAVID W — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

GRYSKA DAVID W has filed 2 SEC Form 4 filings across 2 companies in the last 90 days — buying. Lifetime open-market purchases: $18K.

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-06-15DFTXDefinium Therapeutics, Inc.A — Grant or award4.7K$0.00
2024-12-05DFTXDefinium Therapeutics, Inc.P — Open-market purchase2.5K$7.17$18K

Companies — Last 90 Days

Frequently Asked Questions

Who is GRYSKA DAVID W?

GRYSKA DAVID W is a corporate insider — currently tracked as Insider of Definium Therapeutics, Inc. (DFTX). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has GRYSKA DAVID W submitted recently?

2 primary Form 4 filings in the last 90 days, covering 2 companies.

Has GRYSKA DAVID W been buying or selling stock?

Recorded transactions: 1 open-market purchases ($18K) and 0 open-market sales () across all tracked filings.

Where can I see all of GRYSKA DAVID W's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

Open the live GRYSKA DAVID W profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.