Definium Therapeutics, Inc. DFTX
CIK 0001813814
Form 4 transactions dated Sep 1, 2023 to Sep 28, 2026, as reported to the SEC.
Insider purchases & sales
- Purchased
- $45.07K
- Sold
- $6.84M
Sep 1, 2023 – Sep 4, 2026
Available records · partial months are marked ·
| Date | Insider | Activity | Trade value (USD) | % of prior holding | |
|---|---|---|---|---|---|
| 2025-12-26 | Karlin Daniel Chief Medical Officer | Sale10b5-1 footnote | $73.62K 5,600 shares sold | 1.30% sold Direct holding | ▾ |
| 2025-12-26 | Barrow Robert Chief Executive Officer · Director | Sale10b5-1 footnote | $339.07K 25,791 shares sold | 3.21% sold Direct holding | ▾ |
| 2025-12-26 | Sullivan Mark Chief Legal Officer | Sale10b5-1 footnote | $148.24K 11,276 shares sold | 3.84% sold Direct holding | ▾ |
| 2025-09-25 | Sullivan Mark Chief Legal Officer | Sale10b5-1 footnote | $110.19K 11,278 shares sold | 3.70% sold Direct holding | ▾ |
| 2025-09-25 | Barrow Robert Chief Executive Officer · Director | Sale10b5-1 footnote | $252.04K 25,797 shares sold | 3.11% sold Direct holding | ▾ |
| 2025-09-25 | Karlin Daniel Chief Medical Officer | Sale10b5-1 footnote | $75.27K 7,704 shares sold | 1.76% sold Direct holding | ▾ |
| 2025-06-25 | Sullivan Mark Chief Legal Officer | Sale10b5-1 footnote | $78.14K 11,491 shares sold | 3.63% sold Direct holding | ▾ |
| 2025-06-25 | Karlin Daniel Chief Medical Officer | Sale10b5-1 footnote | $53.37K 7,848 shares sold | 1.76% sold Direct holding | ▾ |
| 2025-06-25 | Barrow Robert Chief Executive Officer · Director | Sale10b5-1 footnote | $180.14K 26,491 shares sold | 3.09% sold Direct holding | ▾ |
| 2025-03-25 | Barrow Robert Chief Executive Officer · Director | Sale10b5-1 footnote | $142.94K 21,208 shares sold | 2.42% sold Direct holding | ▾ |
Showing 13 / 13 record groups in 2025. The complete set is available through the API.
Follow the people behind the trades.
Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and reach other datasets through the Akkru API.
- Download CSV
- Earlier filings
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 13 of 13 purchase / sale groups and 11 of 11 other groups; the totals and the monthly series cover the whole window.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
list_insider_transactions
{"ticker":"DFTX","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.