Overview
Insider buying was focused in healthcare, technology, and financials, while selling was most pronounced in energy, biotech, and communications.
High Signal
ZNTL — Group Walters purchased $15.17M (first recorded purchase). Dip Buy: the stock was down in the previous period. The purchase increased holdings by 32%.
BKKT — Michael Alfred purchased $2.11M (first recorded purchase). The purchase increased holdings by 33%.
Notable Buys
AAT — Executive Chairman (Ernest S Rady) purchased $1.43M across 3 filings between 2026-08-17 and 2026-08-19 (first purchase of AAT). All shares were acquired indirectly by ERT.
ATXG — Zhiwang Hong bought $1.05M (first recorded purchase). The purchase increased holdings by over 3,400%.
LIEN — Co-Chief Investment Officer (Gordon Scott) purchased $420K across 3 filings between 2026-08-17 and 2026-08-19 (first recorded purchases). Secretary; Co-CIO (Mahajan Umesh) bought $38.4K (first recorded purchase). Chief Accounting Officer (Fazio Gianni James Lezziere) bought $1.9K (first recorded purchase). The purchases increased holdings by 11% to 133% for the respective filers.
Notable Sells
AUR — Inc Uber Technologies sold $471.60M (largest sale to date). Volpi Michelangelo sold $19.91M (largest sale to date, indirect — By: Index Ventures Growth III (Jersey) L.P.), and an additional $299K (indirect — By: Yucca (Jersey) SLP).
SHC — Executive Chairman (Petras Michael B. Jr.) sold $21.97M across 2 filings between 2026-08-17 and 2026-08-17 (largest sales to date, including indirect — By Grantor Trust).
PBF — Nimbley Thomas J. sold $25.38M across 3 filings between 2026-08-17 and 2026-08-19 (largest sales to date). Control Empresarial de Capitales S.A. de C.V. sold $8.97M (first recorded sale).
ADPT — CEO and Chairman (Chad M Robins) sold $15.87M across 4 filings between 2026-08-17 and 2026-08-18 (largest sales to date). Peter M Neupert sold $3.53M across 4 filings (largest sales to date).
IRDM — Thomas Fitzpatrick sold $11.01M across 2 filings between 2026-08-17 and 2026-08-18 (largest sales to date). Chief Operations Officer (McBride Suzanne E.) sold $4.30M (largest sale to date). Chief Legal Officer (Morgan Kathleen A.) sold $1.67M across 2 filings (largest sales to date). EVP, Sales & Marketing (Last Timothy James) sold $982K across 2 filings. CAO Iridium Satellite LLC (Kapalka Timothy) sold $681K (largest sale to date). Olson Eric T sold $405K (largest sale to date).
Patterns
- Multiple insiders sold large positions in biotech and energy, with ADPT and PBF seeing clustered selling activity.
- High signal buys were concentrated in healthcare and technology, with both ZNTL and BKKT seeing first-time, multi-million dollar purchases.
- Financial sector saw several first-time insider buys, particularly in LIEN, with increases in holdings ranging from 11% to over 100%.
Close
Top buy tickers by $ value: ZNTL $15.17M, BKKT $2.11M, AAT $1.43M.
Top sell tickers by $ value: AUR $491.81M, SHC $21.97M, PBF $34.35M.