Insider buying, week by week

PMTS leads active week with five-insider cluster

PMTS (CPI Card Group) stood out with five insiders buying $12.0M following an 8-K filing, marking the week's largest cluster and dollar volume.

TSM's 30-Insider Cluster Dominates Week

Taiwan Semiconductor (TSM) saw an unusual 30-insider buying cluster totaling $121.8K, signaling coordinated internal confidence.

Wix cluster leads modest insider week

WIX drew the week's largest insider cluster with 6 buyers purchasing $185,719, while QNRX and UAMY each registered 4- and 3-insider groups.

MAIR, ODYS lead busy insider week

Madison Air Solutions (MAIR) dominated with a single 8-K catalyst driving $219.6M in insider buying from a 10% owner, while Odysight.ai (ODYS) saw a 3-insider cluster deploy $3.85M tied to a major shareholder.

Infrastructure and biotech draw insider clusters

Cardinal Infrastructure (CDNL) led the week with seven insiders purchasing $8.5M in stock, while biotech Apollomics (APLM) saw a three-person cluster commit $8.3M despite modest head count.

Biotech and SPAC insiders drive heavy week

TSM led with an exceptional 30-insider cluster buying just under $119K, signaling broad confidence in the chipmaker.

Biotech Cluster Drives $70M Insider Week

BRVE led a busy week with seven insiders deploying $69.4M in aggregate—the largest single-company insider buy of the period and a strong show of conviction from a cluster that included a 10% owner.

Biotech cluster dominates insider buying week

SCTX led the week with a 6-insider cluster buying $71.3M, signaling broad management conviction in the biotech play.

TSM's 31-insider cluster dominates quiet week

Taiwan Semiconductor Manufacturing saw a remarkable 31-insider buying cluster totaling $122.6M, the week's most significant coordinated activity.

SPG leads broad insider buying week

Simon Property Group (SPG) dominated with an 11-insider cluster purchasing $533K, signaling coordinated confidence in the REIT.

DPC and KARD lead insider buying surge

DPC Holdings drew six insiders buying $51.6M in stock, while Kardigan's 10% owner led a three-person cluster spending $90M—the week's two largest transactions.

Pharma cluster leads modest insider week

PCSA drew a cluster of 5 insiders buying $24.7K, while XRAY and GABC each saw 4-person clusters with stronger dollar volumes ($416K and $4K respectively).

Summit's $100M insider buy dominates quiet week

Summit Therapeutics (SMMT) drew the week's headline with a single $99.97M insider purchase tied to a material 8-K filing, dwarfing all other activity.

Biotech and Defense Lead Insider Buying Week

SMMT (Summit Therapeutics) led the week with $3.6M in insider buying across 3 buyers, including a 10% owner, paired with a material 8-K filing.

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.

Insider Week Led by Major Holders

May 18–24 saw scattered insider buying across eight names, with no clustering activity.