Corrigan Catherine, Chief Executive Officer of Exponent Inc. (EXPO), has been a consistent seller of the company’s stock over the past year, with Form 4 filings showing a clear disposition bias. Across 60 total transactions, she has recorded zero open-market purchases and zero acquisitions, while selling approximately $3.08 million worth of EXPO shares. The most recent activity, spanning March through July 2026, shows a steady cadence of sales paired with option exercises (code M) that supply the shares being sold. For example, on July 15, 2026, she exercised options valued at $69,109.95 and immediately sold $109,044.69 worth of stock, a pattern repeated on the 15th of each month from March through July.
The transaction sizes are modest and regular, ranging from roughly $98,766 to $149,744 per sale, with the largest single sale of $149,744.44 occurring on April 15, 2026. These sales are consistently paired with option exercises of similar value, suggesting a mechanical process of exercising vested options and selling the resulting shares rather than a large-scale liquidation of existing holdings. The most significant single event in the recent window was a tax withholding transaction (code F) on March 11, 2026, valued at $431,104.68, which is an automatic disposition of shares to cover tax obligations and not a discretionary sale.
The overall pattern is one of routine monetization of equity compensation rather than a concentrated or urgent exit. The absence of any open-market purchases (code P) — the only transaction type that signals conviction buying — combined with the regular monthly sales, indicates a consistent net-selling posture. However, the small, periodic nature of the sales and their direct linkage to option exercises suggest this is standard portfolio management by a CEO receiving equity awards, not a reaction to company-specific developments.
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