Stagwell CEO Mark Penn sells 1 million shares worth $10.21 million
The gist
Stagwell CEO Mark Penn sold 1,000,000 shares for $10,210,000, a Form 4 filing shows.
The sale follows Stagwell's record quarter, so watch for more insider selling.
How it unfolded
- Sep 15, 2015Stagwell is started with a single employee in a half-rented office.
- Nov 10, 2025Stagwell and Penn lay out a growth strategy and strike a partnership with Palantir after solid third-quarter earnings.
- Aug 3, 2026Penn appears on Bloomberg Open Interest to argue AI won't replace agencies.