Definium Therapeutics, Inc. (DFTX)
Nasdaq: DFTX · Medicinal Chemicals & Botanical Products · New York, NY · filing with the SEC since 2020
Who runs Definium Therapeutics, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Barrow Robert
Chief Executive Officer. First filing Jan 2022, latest Sep 29, 2026, 30 filings in all.
Officers reporting now
5
of 11 people with a filing in the last fifteen months
Directors reporting now
6
18 people on the record since 2022
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Barrow Robert | Chief Executive Officer | Jan 2022 | Sep 29, 2026 | 5 · $4.0M |
| Roberts Brandi | Chief Financial Officer | Jun 2025 | Sep 29, 2026 | 2 · $300,000 |
| Karlin Dan | Chief Medical Officer | Jan 2022 | Sep 29, 2026 | 4 · $1.1M |
| Sullivan Mark | Chief Legal Officer | Apr 2023 | Sep 29, 2026 | 4 · $1.4M |
| Wiley Matthew T. | Chief Commercial Officer | Mar 2025 | Sep 29, 2026 | 2 · $200,000 |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Krebs Andreas | director | Jan 2022 | Sep 18, 2026 | none |
| Vallone Carol A | director | Jan 2022 | Sep 18, 2026 | none |
| Adsett Roger | director | Jan 2026 | Jun 15, 2026 | none |
| Bruhn Suzanne Louise | director | Aug 2022 | Jun 15, 2026 | none |
| Crystal Roger | director | Aug 2022 | Jun 15, 2026 | none |
| Gryska David W | director | Jun 2023 | Jun 15, 2026 | none |
Earlier names on the record7, newest filing first
Liao Carrie · officer · last filing Mar 2025Wernli Miri Halperin · officer · last filing Aug 2024Greenway Schond L. · officer · last filing Mar 2024Makes Brigid · director · last filing Jun 2022Hu Cynthia W. · officer · last filing Mar 2022Hurst Stephen L · director · last filing Mar 2022Vinson Sarah Y · director · last filing Jan 2022
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.