Energy and Fitness Insiders Make Significant Stock Buys Amid Major Tech Sells

Corporate insiders at several U.S. companies, notably in the energy and fitness sectors, have made significant open-market purchases of their own stock, according to regulatory filings disclosed Wednesday. These buys contrast with substantial sales by insiders at technology and healthcare firms, providing a mixed but insightful signal to investors.

Notable Insider Purchases

Mach Natural Resources LP (MNR) saw a strong vote of confidence from its chief executive, Tom L. Ward. A trust for which Ward serves as trustee acquired 172,413 common units for approximately $2 million on September 14, 2026. The purchase was made as the company's stock trades near its 52-week low.

In the consumer sector, a director at Planet Fitness, Inc. (PLNT), Christopher Tanco, acquired 2,328 shares for about $119,259. This purchase is notable as it comes after the company's stock has declined over 50% in the past year, suggesting a belief in its value at current levels.

Other significant buys reported include:

• Global Partners LP (GLP): The company's general partner purchased common units worth a total of $768,200 between September 14 and 16.
• Brandywine Realty Trust (BDN): President and CEO Gerard H. Sweeney bought 33,900 shares for $100,344 as the stock traded near its 52-week low.
• Ares Dynamic Credit Allocation Fund, Inc. (ARDC): A 10% owner, Thrivent Financial for Lutherans, acquired $6 million worth of preferred shares.

Major Selling Activity Reported

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On the sell side, insiders at several high-performing companies took profits. A director and 10% owner of Chime Financial, Inc. (CHYM), DST Global Advisors Ltd, reported the sale of stock totaling approximately $109.3 million on September 14. Another director, James Feuille, also sold shares worth $14.7 million over three days.

At Natera, Inc. (NTRA), Executive Chairman Matthew Rabinowitz sold 101,000 shares for a total of nearly $34.8 million as the stock traded near its 52-week high. Similarly, Sandisk Corp. (SNDK) Chairman and CEO David Goeckeler sold stock valued at approximately $51.7 million.

Many of these sales were conducted under pre-arranged Rule 10b5-1 trading plans. These plans allow insiders to schedule transactions at a future date, which can help mitigate suggestions of trading on non-public information.

Context for Investors

Insider buying is often monitored by investors as a potential indicator of executives' confidence in their company's future prospects. Open-market purchases, particularly when a stock's price is depressed, are typically viewed as a bullish signal.

Conversely, insider selling does not always signal a lack of confidence. Executives may sell shares for a variety of reasons unrelated to company performance, such as for portfolio diversification, tax planning, or personal liquidity needs. Therefore, tracking the context and pattern of these transactions is crucial for analysis.