Insiders / Simon Mark

Simon Mark

CIK 1400717personinsider

Companies

First seen

Jan 21, 2026

Last activity

Jun 10, 2026

Companies

Company	Role	Shares held	Peak held	Trades	Latest
Cabaletta Bio, Inc. · CABA	Director	147,205	147,205	2	—

2 positions · latest reported per filing

Company	Security	Shares	As of
Cabaletta Bio, Inc.	Common Stock	147,205	Jan 21, 2026
Cabaletta Bio, Inc.	Stock Option (Right to Buy)Derivative	22,000	Jun 9, 2026

InsidersInstitutions

This person's insider trades (Form 4), across every company.

Date	Action	Company	Value	Shares Δ	Position after	Impact
Jan 21, 2026	Buy	CABA Cabaletta Bio, Inc. Common Stock	$25.3K	+11K +8.12%	147,205 0.09% of shares	low
Jun 9, 2026	Grant	CABA Cabaletta Bio, Inc. Stock Option (Right to Buy)	—	+22K	22,000 0.01% of shares	low