Monday, May 18, 2026: insiders filed 78 open-market purchases and 163 sales

The S&P 500 (SPY) closed at 738.65, -0.07% on the day.

• Insiders of US-listed companies filed 78 open-market purchases (about $114M) at 33 companies and 163 open-market sales (about $430M) at 66 companies; see every filing of the day.
• The largest open-market purchase filed: CASCADE INVESTMENT, L.L.C. (10% owner) at Republic Services (RSG), about $31.4M (SEC Form 4).
• 5 insiders at Trisalus Life Sciences (TLSI) each filed an open-market purchase, about $1.82M in total (SEC Form 4).
• The largest open-market sale filed: MEGACHIPS CORP /FI (10% owner) at SiTime (SITM), about $312M (SEC Form 4).
• 7 stock-trade reports from members of Congress were disclosed; the largest range: Rep. Brian Babin (TX36) disclosed a partial sale of FTAI, reported range $50,001 - $100,000 (official disclosure).
• 210 fund and investor stake filings were recorded, led by Situational Awareness LP disclosed a new position in AMD (put options) for Q1 2026 (SEC filing).
• 1 federal contract awards of $10M or more were announced, the largest: Department of Defense awarded FedEx: $32M obligated to date (USAspending record).
• 2 lobbying reports were posted with an amount; the largest: LAM RESEARCH CORP. reported $30K in lobbying for Q1 2026 through THE GALLAGHER GROUP, LLC (lda.gov filing).