DFTX

Definium Therapeutics, Inc.

SEC CIK 1813814
$24.75 +45.3% · 90 days
90-day buys
$0
0 open-market
90-day sells
$797K
3 open-market
Net insider flow
−$797K
Net selling
Filings shown
19
Most recent
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At a glance

Over the last 90 days, insiders at DFTX have sold a net $797K of stock (0 open-market buys vs 3 sells).

Largest recent trade: Barrow Robert sold $451.2K of DFTX, trimming their stake 3%.

Most active filer: Karlin Daniel, with 6 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for DFTX, newest first
View on SEC EDGAR ↗
DFTX
Sell Karlin Daniel · Chief Medical Officer · Open-market sale · filed Mar 26, 2026 ΔOwn −1.9%

Karlin Daniel sold $148.1K of DFTX, trimming their stake 2%.

−$148.1K
8,018 sh @ $18
DFTX
Sell Sullivan Mark · Chief Legal Officer · Open-market sale · filed Mar 26, 2026 ΔOwn −3.8%

Sullivan Mark sold $197.7K of DFTX, trimming their stake 4%.

−$197.7K
10,702 sh @ $18
DFTX
Sell Barrow Robert · Director, Chief Executive Officer · Open-market sale · filed Mar 26, 2026 ΔOwn −3.1%

Barrow Robert sold $451.2K of DFTX, trimming their stake 3%.

−$451.2K
24,431 sh @ $18
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MNMD
Sell Karlin Daniel · Chief Medical Officer · Open-market sale · filed Dec 29, 2025 ΔOwn −1.3%

Karlin Daniel sold $73.6K of MNMD, trimming their stake 1%.

−$73.6K
5,600 sh @ $13
MNMD
Sell Barrow Robert · Director, Chief Executive Officer · Open-market sale · filed Dec 29, 2025 ΔOwn −3.2%

Barrow Robert sold $339.1K of MNMD, trimming their stake 3%.

−$339.1K
25,791 sh @ $13
MNMD
Sell Sullivan Mark · Chief Legal Officer · Open-market sale · filed Dec 29, 2025 ΔOwn −3.8%

Sullivan Mark sold $148.2K of MNMD, trimming their stake 4%.

−$148.2K
11,276 sh @ $13
MNMD
Sell Sullivan Mark · Chief Legal Officer · Open-market sale · filed Sep 26, 2025 ΔOwn −3.7%

Sullivan Mark sold $110.2K of MNMD, trimming their stake 4%.

−$110.2K
11,278 sh @ $10
MNMD
Sell Barrow Robert · Director, Chief Executive Officer · Open-market sale · filed Sep 26, 2025 ΔOwn −3.1%

Barrow Robert sold $252K of MNMD, trimming their stake 3%.

−$252K
25,797 sh @ $10
MNMD
Sell Karlin Daniel · Chief Medical Officer · Open-market sale · filed Sep 26, 2025 ΔOwn −1.8%

Karlin Daniel sold $75.3K of MNMD, trimming their stake 2%.

−$75.3K
7,704 sh @ $10
MNMD
Sell Sullivan Mark · Chief Legal Officer · Open-market sale · filed Jun 26, 2025 ΔOwn −3.6%

Sullivan Mark sold $78.1K of MNMD, trimming their stake 4%.

−$78.1K
11,491 sh @ $7
MNMD
Sell Karlin Daniel · Chief Medical Officer · Open-market sale · filed Jun 26, 2025 ΔOwn −1.8%

Karlin Daniel sold $53.4K of MNMD, trimming their stake 2%.

−$53.4K
7,848 sh @ $7
MNMD
Sell Barrow Robert · Director, Chief Executive Officer · Open-market sale · filed Jun 26, 2025 ΔOwn −3.1%

Barrow Robert sold $180.1K of MNMD, trimming their stake 3%.

−$180.1K
26,491 sh @ $7
MNMD
Sell Barrow Robert · Director, Chief Executive Officer · Open-market sale · filed Mar 26, 2025 ΔOwn −2.4%

Barrow Robert sold $142.9K of MNMD, trimming their stake 2%.

−$142.9K
21,208 sh @ $7
MNMD
Sell Karlin Daniel · Chief Medical Officer · Open-market sale · filed Mar 26, 2025 ΔOwn −1.5%

Karlin Daniel sold $46.1K of MNMD, trimming their stake 2%.

−$46.1K
6,836 sh @ $7
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About DFTX insider activity

This page tracks every recent Form 4 filed for Definium Therapeutics, Inc. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is DFTX insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for Definium Therapeutics, Inc. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.