WaveMan · Form 4
Gryska David W insider trades
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Gryska David W insider trades

Gryska David W has filed 25 Form 4s with the SEC that we hold, for SGEN (Director), Forte Biosciences, Inc. (FBRX) (Director), Definium Therapeutics, Inc. (DFTX) (Director) and AERI (Director), among 5 companies in all. Across all of them we count 2 purchases worth $38.9K and 12 sales worth $3.3M reported on Form 4. None of these purchases or sales is dated in the last 12 months. The largest single trade was a sale of 7,500 shares of SGEN worth $968.2K, dated 2022-11-11. The first filing on our record is dated 2022-01-19 and the latest 2026-10-05.

SGEN

Director · 9 filings · 12 purchases and sales
Trade dateCodeSharesValue as filedFiled
2022-01-14S, sale reported on Form 44,500$608.6K2022-01-19
2022-01-28S, sale reported on Form 4850$103.4K2022-02-01
2022-01-28S, sale reported on Form 42,553$312.6K2022-02-01
2022-01-28S, sale reported on Form 4883$109.0K2022-02-01
2022-01-28S, sale reported on Form 4214$26.6K2022-02-01
2022-02-07S, sale reported on Form 41,029$142.7K2022-02-09
2022-02-07S, sale reported on Form 41,100$151.2K2022-02-09
2022-02-07S, sale reported on Form 42,371$330.6K2022-02-09
2022-04-19S, sale reported on Form 41,516$218.6K2022-04-21
2022-04-19S, sale reported on Form 4690$100.1K2022-04-21
2022-04-19S, sale reported on Form 41,794$257.1K2022-04-21
2022-11-11S, sale reported on Form 47,500$968.2K2022-11-15

Forte Biosciences, Inc. (FBRX)

Director · 7 filings · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Definium Therapeutics, Inc. (DFTX)

Director · 6 filings · 2 purchases and sales
Trade dateCodeSharesValue as filedFiled
2024-08-23P, purchase reported on Form 43,500$20.9K2024-08-26
2024-12-05P, purchase reported on Form 42,500$17.9K2024-12-05

AERI

Director · 2 filings · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Celcuity Inc. (CELC)

Director · 1 filing · 0 purchases and sales

No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.

Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1202335) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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