Sullivan Mark — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Sullivan Mark has filed 2 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $1.08M.

Profile

Sullivan Mark
RoleInsider
Notability30/100

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-06-26DFTXDefinium Therapeutics, Inc.S — Open-market sale13.0K$45.03$586K
2026-06-22DFTXDefinium Therapeutics, Inc.A — Grant or award62.5K$0.00
2026-03-26DFTXDefinium Therapeutics, Inc.S — Open-market sale [10b5-1]10.7K$18.47$198K
2026-02-05DFTXDefinium Therapeutics, Inc.A — Grant or award125.0K$0.00
2025-12-29DFTXDefinium Therapeutics, Inc.S — Open-market sale [10b5-1]11.3K$13.15$148K
2025-09-25DFTXDefinium Therapeutics, Inc.S — Open-market sale11.3K$9.77$110K
2024-12-27DFTXDefinium Therapeutics, Inc.S — Open-market sale [10b5-1]4.5K$7.43$34K

Companies — Last 90 Days

Frequently Asked Questions

Who is Sullivan Mark?

Sullivan Mark is a corporate insider — currently tracked as Insider of Definium Therapeutics, Inc. (DFTX). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has Sullivan Mark submitted recently?

2 primary Form 4 filings in the last 90 days, covering 1 company.

Has Sullivan Mark been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 5 open-market sales ($1.08M) across all tracked filings.

Where can I see all of Sullivan Mark's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

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