Week of

May 25–31

2026-W21

51 notable names · disclosed in SEC filings this week

The week in buying

Small-cap clusters dominate modest week

UBCP led with an 8-insider cluster totaling $185,864, while OTLK saw four insiders buy $243,631 following an 8-K filing. SLMT stood apart with a 10% owner purchasing $11.4M across two transactions, though the week remained relatively quiet overall with 51 companies showing activity—mostly micro and small-cap names concentrated in financials and healthcare.

Most eventful

biggest price moves this week

Outlook Therapeutics, Inc.

▲ +57.0% that week

Cluster ×4Catalyst

WW INTERNATIONAL, INC.

▲ +29.3% that week

More buying this week

UNITED BANCORP INC /OH/

$15.41▲ +7.2%

8$185.9KCluster

HCW Biologics Inc.

$1.98▼ -27.2%

3$430.0KCluster

WhiteHorse Finance, Inc.

$25.62▲ +0.6%

3$376.1KCluster

$50.04▼ -3.9%

3$339.4KCluster

BurTech Acquisition Corp II

3ClusterCatalyst

Brera Holdings PLC

Don't wait for the weekly recap — Pro alerts you within ~15 minutes of each filing.