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© 2026 Insider Trade Flow. Not financial advice. All data sourced from public SEC filings, 13F reports, and Polymarket.
3 Active Clusters

Cluster Buying
Signals

When multiple insiders buy the same stock within a short window, it often signals exceptional confidence. Track real-time cluster activity across all sectors.

3
Buy Clusters
0
Sell Clusters
0
Strong Signals
$757.3K
Total Volume
Period:
7 Days30 Days90 Days
Type:
Buy ClustersSell ClustersAll
NORWOOD BROADCASTING CORPUBCP
Unknown·Same day·May 27, 2026 - May 27, 2026
4
Insiders
$83.7K
Volume
Weak Signal
CEO Participating
EVERSON SCOTT A
Chairman Pres and CEO
$33.0K
2,213 shares

What is Cluster Buying?

Cluster buying occurs when multiple corporate insiders purchase shares of their company within a short time window. This pattern is considered one of the strongest signals of insider confidence.

When three or more executives independently decide to buy shares around the same time, it suggests they collectively believe the stock is undervalued. Research shows that cluster buys with CEO or CFO participation tend to have even stronger predictive value.

Signal Strength Scoring

  • +10 points3 or more insiders participating
  • +5 pointsCEO participating
  • +5 pointsCFO participating
  • +5 pointsAverage purchase over $200K
  • -5 pointsIncludes 10b5-1 planned trades

Get Cluster Buy Alerts

Be the first to know when multiple insiders start buying. Set up real-time alerts for cluster activity.

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Hendershot Brian M
Executive
$31.1K
2,080 shares
HOOPINGARNER JOHN M
Executive
$13.9K
931 shares
Branstetter Matthew Fredrick
Chief Operating Officer
$5.7K
380 shares
View UBCP Company Page
Outlook Therapeutics, Inc.OTLK
Unknown·1 day·May 26, 2026 - May 27, 2026
4
Insiders
$243.6K
Volume
Weak Signal
HILZINGER KURT J
Executive
$176.5K
400,000 shares
Sukhtian Faisal Ghiath
Executive
$50.0K
122,174 shares
Haddadin Yezan Munther
Executive
$15.0K
34,000 shares
THURMAN RANDY H
Executive
$2.1K
5,000 shares
View OTLK Company Page
HCW Biologics Inc.HCWB
Unknown·Same day·May 22, 2026 - May 22, 2026
3
Insiders
$430.0K
Volume
Weak Signal
CFO Participating
GARRETT SCOTT T
Executive
$250.0K
355,872 shares
Wong Hing C
Executive
$160.0K
227,758 shares
Byam Rebecca
Chief Financial Officer
$20.0K
28,470 shares
View HCWB Company Page