Overview
Insider buying was focused in healthcare and services, while selling was concentrated in technology, real estate, and consumer internet names.
High Signal
CBIO — Fairmount Funds Management LLC purchased $12.38M (2nd largest purchase, out of 2). This buy increased their holdings by 31%. 7 other insiders also purchased in the last 30 days.
COE — Chief Executive Officer (Huang Jack Jiajia) purchased $8.48M across 3 filings between 2026-07-10 and 2026-07-13 (15th, 11th, and 30th largest purchases out of 95). 1 other insider also purchased in the last 30 days.
Notable Buys
ZSTK — Executive Chairman (Heinrich Michael) bought $3.48M (first recorded purchase). This is a new position for the filer, representing a significant initial stake.
ARTV — L.p. Ra Capital Management purchased $1.44M across 2 filings between 2026-07-16 and 2026-07-17 (3rd and 0th largest purchases). Multiple related entities participated, and 3 other insiders also bought in the last 30 days.
FULC — Kevin Tang purchased $594.67K across 2 filings between 2026-07-16 and 2026-07-17 (first and second largest purchases). Buying occurred as the stock traded in a tight range.
Notable Sells
SN — Chief Executive Officer (Barrocas Mark) sold $38.75M (largest sale for this ticker). This is a substantial disposition in the Information Technology sector.
PLD — Moghadam Hamid sold $7.50M (largest sale for this ticker). The transaction occurred in the Real Estate sector.
DDOG — Agarwal Amit sold $6.13M across 9 filings on 2026-07-16 (ranging from 60th to 371st largest sales out of 434). This series of sales follows a period of strong performance in the Information Technology sector.
UTHR — Chairperson & CEO (Martine A Rothblatt) sold $4.97M across 10 filings on 2026-07-17 (largest to smallest sales). The sales were spread throughout the day in the Health Care sector.
SE — COO (Ye Gang), CFO (Hou Tianyu), and CCO and GC (Wang Yanjun) sold a combined $5.44M across multiple filings between 2026-07-16 and 2026-07-17. The selling was broad-based among top executives in the Consumer Discretionary sector.
Patterns
- Healthcare and biotechnology names saw the most concentrated insider buying, with multiple large purchases and several insiders participating.
- Technology and internet retail companies experienced heavy insider selling, often involving multiple executives and clustered transactions.
- Several of the largest buys were by first-time or infrequent filers, indicating new or expanding positions.
Close
Top buy tickers by $ value: CBIO $12.38M, COE $8.48M, ZSTK $3.48M.
Top sell tickers by $ value: SN $38.75M, PLD $7.50M, DDOG $6.13M.
EARNINGS AHEAD
FULC — estimated report ~Jul 22 (quarterly)
UTHR — estimated report ~Jul 22 (quarterly)
PLD — estimated report ~Aug 1 (quarterly)
DDOG — estimated report ~Aug 9 (quarterly)