Entegris Chair Loy Bertrand Buys Low, Sells High in 10b5‑1 Trades, Keeps Stake Flat—What It Means for Investors

Insider Activity Spotlight: Entegris Inc. and Executive Chair Loy Bertrand

The latest insider filing on February 2, 2026 shows Executive Chair Loy Bertrand purchasing 65,250 shares of Entegris Common Stock at $55.72 per share—well below the market price of $113.90 at the time. This purchase, executed through a Rule 10b5‑1 trading plan, is notable for two reasons. First, it represents a sizeable “buy” that increases Bertrand’s stake to 371,672 shares, roughly 0.21 % of the outstanding float. Second, the buy occurs amid a series of 10b5‑1 sales by Bertrand earlier that day, totaling nearly 71,000 shares sold at prices ranging from $115.96 to $120.91. The juxtaposition of buying low and selling high suggests a disciplined, plan‑based approach rather than opportunistic trading.

Implications for Investors

Entegris’ shares have been volatile: a 52‑week high of $124.00, a low of $60.75, and a current price of $113.70. Bertrand’s recent sales began just below the $115 mark, implying that the plan was set when the stock was trading higher than the $55.72 purchase price. Investors might view the plan as a signal that senior management is confident in the company’s long‑term trajectory, yet they should also note that the sales were executed at a time when the stock was nearing its weekly peak. The net effect—purchases offset by sales—leaves Bertrand’s ownership unchanged, which could be interpreted as a neutral stance toward the company’s valuation.

Historical Buying and Selling Patterns

Examining Bertrand’s prior filings reveals a pattern of significant buying in December 2025, when he acquired 57,570 shares at $33.33 and later sold 40,865 shares at $77.09. In 2025, his total shareholdings hovered around 360,000 shares, with intermittent sales at mid‑$70s and a large 57,570‑share option exercise that was later sold. This mix of options and outright purchases suggests that Bertrand uses the 10b5‑1 framework to manage both his equity compensation and personal investment strategy. The February 2026 filing continues that trend, with a large sale block (over 65k shares) at $55.72—indicating a willingness to liquidate significant positions even when the market is under pressure.

What Does This Mean for Entegris’ Future?

Entegris operates in a niche but critical segment of the semiconductor supply chain, supplying materials and equipment that enable chip manufacturing. Its high price‑to‑earnings ratio (~62) reflects premium valuations typical for high‑growth tech suppliers, yet the recent 6 % weekly decline hints at short‑term pressure from broader market sell‑offs. Bertrand’s consistent use of a 10b5‑1 plan—buying at low levels, selling at peaks—may reassure investors that senior management is not attempting to manipulate the stock price but is instead following a structured exit strategy. For those weighing an investment, the insider activity suggests that leadership remains aligned with shareholders and is prepared to rebalance their positions without influencing market sentiment.

Profile of Loy Bertrand

Loy Bertrand, Entegris’ Executive Chair, has a track record of disciplined insider trading. Over the past year, he has executed multiple large transactions via Rule 10b5‑1 plans, balancing sizeable purchases with equally substantial sales. His portfolio typically moves in and out of the $30‑$80 price range, reflecting a strategy that takes advantage of both growth and consolidation periods. The recent February 2026 buy at $55.72, coupled with a series of high‑price sales later that day, underscores his commitment to a systematic trading approach rather than opportunistic speculation. For investors, Bertrand’s activity signals a level of confidence in Entegris’ long‑term prospects while maintaining flexibility to manage personal liquidity needs.