Corrigan Catherine 4

What Happened

• Catherine Corrigan, President & CEO and Director of Exponent (EXPO), exercised stock options on 2026-05-15 to acquire 5,606 shares (2,380 shares at $29.05 and 3,226 shares at $25.41), paying about $151,096 in exercise price.
• On the same day she disposed of shares: two open-market sales totaling 4,194 shares at $54.06 per share for combined proceeds of $226,726. The filing also records derivative disposals of 5,606 shares (N/A price), consistent with shares surrendered in connection with the exercise. Footnote indicates the stock sale was to cover the option exercise price and taxes.

Key Details

• Transaction date: 2026-05-15 (filed same day; timely).
• Options exercised: 2,380 @ $29.05 (cost $69,139) and 3,226 @ $25.41 (cost $81,957) — total 5,606 shares, ~$151,096 paid.
• Open-market sales: 1,827 @ $54.06 (proceeds $98,767) and 2,367 @ $54.06 (proceeds $127,959) — total 4,194 shares, ~$226,726 proceeds.
• Derivative disposals: 3,226 and 2,380 shares shown as disposed (N/A price) — corresponds to exercised shares surrendered/withheld.
• Footnotes: F1 — sales were to cover option exercise price and taxes; F2 — the option vests in four equal annual installments; F3 — not applicable.
• Shares owned after transaction: not specified in the provided excerpt — see the full Form 4 for total beneficial ownership.

Context

• This was an option exercise followed by share dispositions to cover the exercise cost and tax withholding (commonly called a cashless exercise/sell-to-cover). Exercises are purchases of stock via option conversion; subsequent sales to cover taxes are routine and do not necessarily indicate a change in insider sentiment.