Company profile
Definium Therapeutics, Inc. Insider Trading
DFTXEvery SEC Form 4 insider trading filing for Definium Therapeutics, Inc. (DFTX) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Medicinal Chemicals & Botanical Products
- CIK
- 0001813814
- Filings
- 110
- Insiders
- 14
- Last filing
- 2026-09-18
Activity summary
Recent insider activity is bullish. Over the last 30 days, 10 insiders purchased shares (net $96K). Buying was led by Andreas Krebs.
Three year balance
Buy and sell value by quarter, Q4 23 to Q3 26. Definium Therapeutics, Inc. insiders were net sellers in every quarter shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $2.6M.
90 day insight
Over the last 90 days, Definium Therapeutics, Inc. insiders bought $96K across 15 transactions with no open-market sales.
- Most active insider: Robert Barrow with 4 transactions totaling $722K.
- Largest single sale: $722K by Robert Barrow on Sep 3, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades, typically less informative than open-market activity.
Activity skews bullish: buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 18, 2026 | Carol A Vallone | DFTX | Option Exercise | 1,086 | $35.52 | $39K |
| Sep 18, 2026 | Carol A Vallone | DFTX | Option Exercise | 1,086 | — | — |
| Sep 18, 2026 | Andreas Krebs | DFTX | Option Exercise | 1,629 | $35.52 | $58K |
| Sep 18, 2026 | Andreas Krebs | DFTX | Option Exercise | 1,629 | — | — |
| Sep 14, 2026 | Daniel Karlin | DFTX | Award | 200,000 | — | — |
45 more transactions hidden
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By total value filed.
Institutional Ownership
Top 13F-HR holders of Definium Therapeutics, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →