Brian F. Sullivan

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

3

Stocks Covered

1

Latest Filing

Nov 13, 2025

Filings

CELC

Celcuity Inc.

SC 13G/A · Nov 13, 2025

9.1%

4.0M shares

CELC

Celcuity Inc.

SC 13G/A · Feb 2, 2023

15.7%

3.5M shares

CELC

Celcuity Inc.

SC 13G/A · Mar 4, 2022

19.1%

2.9M shares