Zumwalt Debra 4

What Happened

• Debra Zumwalt, a director of Exponent, converted 2,009 vested restricted stock units (RSUs) into common stock on 2026-06-03 (reported as a derivative exercise/conversion) and the converted shares were reported as disposed the same day. On 2026-06-04 she was granted 2,859 RSUs (award). Prices and dollar values are listed as N/A in the filing.

Key Details

• Transaction types and dates: 6/03/2026 — exercise/conversion of derivative (code M) for 2,009 shares (acquired and disposed same day); 6/04/2026 — grant/award (code A) for 2,859 RSUs.
• Prices/values: Reported as N/A for these entries (conversion and award; no cash purchase or sale price shown).
• Footnotes: Converted shares are from vested RSUs originally granted 6/05/2025 and converted on a 1:1 basis (F1, F3). The new RSUs will cliff-vest the day prior to the company’s next annual shareholder meeting (F4). F2 is not applicable.
• Shares owned after transaction: Not specified in the provided filing details.
• Filing timeliness: Reported on 2026-06-04 covering transactions on 6/03/2026 — filed promptly (no late filing indicated).

Context

• Simple explanation: The 2,009-share entry reflects vested RSUs being converted into common stock and those converted shares being disposed the same day (reported as a derivative disposition). The 2,859-share entry is a new RSU award that will cliff-vest later, so those shares are not immediately transferable. No cash amounts or market values were reported, so the monetary impact is not shown in the filing.