Two separate insider stock sales filed on July 1, 2026 drew attention from investors tracking executive activity. A senior vice president at semiconductor company Ambarella sold just under $900,000 in shares, while a director at equipment rental company McGrath RentCorp sold approximately $905,000 in shares, both through open-market transactions disclosed in SEC Form 4 filings.
At Ambarella, Ju Chi-Hong sold 10,000 shares of common stock at a weighted average price of $88.84 per share, according to Yahoo Finance. That price sat roughly 6.2% above the session's opening price of $83.63 and nearly flat to the July 1 closing price of $88.34. The transaction reduced Ju Chi-Hong's direct holdings by 5.75%, leaving the executive with 155,924 directly held shares and 8,000 indirectly held shares.
The sale is larger than Ju Chi-Hong's average sell-only transaction size of approximately 3,569 shares and exceeds the majority of recent transactions. However, it remains below the maximum single sale of 11,213 shares recorded since July 2023. Ambarella's stock has risen 18% over the past year. The company develops AI-powered system-on-chip solutions for automotive, security, robotics, and consumer electronics markets.
At McGrath RentCorp, director Joseph F. Hanna sold 7,500 shares across multiple open-market transactions at a weighted average price of $120.64, bringing the total transaction value to approximately $905,000. The sale reduced his direct holdings by 4.72%, moving from 159,049 to 151,549 shares. At the July 1 closing price, Hanna still holds roughly $18.3 million in McGrath stock.
The McGrath filing does not indicate a Rule 10b5-1 preset trading plan, meaning the timing of the sale appears to have been discretionary. The 7,500-share sale is actually the smallest of Hanna's five recorded open-market dispositions since February 2024, well below his historical average of approximately 13,254 shares per transaction. The report from Yahoo Finance notes that the shrinking size of his recent sales tracks his shrinking share count rather than any apparent shift in conviction.
McGrath RentCorp reported that rental operations revenue grew 5% in the first quarter to $162.2 million. Its TRS-RenTelco segment posted 13% rental revenue growth driven by data center buildouts. Management confirmed full-year revenue guidance of $945 million to $995 million. CEO Phil Hawkins said the company is "pleased with our start to the year," though he flagged that macro uncertainty could affect project timelines.
McGrath provides modular buildings, portable storage, electronic test equipment, and containment solutions to clients in education, construction, industrial, communications, and public sector markets. Its four operating segments are Mobile Modular, TRS-RenTelco, Adler Tanks, and Enviroplex.
Both sales, taken individually, fit patterns consistent with routine portfolio management rather than a signal of concern about either company's near-term prospects. Neither filing contained disclosures pointing to material negative developments at their respective companies.
