Updated Jul 16, 2026 · Last SEC filing 2026-06-29
EXPONENT INC (EXPO) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-29. 1 Form 8-K material event filings were reported by EXPO in the last 90 days. 7 Form 144 notices of proposed sale were filed for EXPO stock. InsiderAlpha tracks every EXPO SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Services-Management Consulting Services (SIC 8742) |
|---|---|
| SEC CIK | 0000851520 |
| Form 4 filings (90d) | 12 |
|---|---|
| Form 8-K filings (90d) | 1 |
| Form 144 notices (90d) | 7 |
| Latest Form 4 filing | 2026-06-29 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Corrigan Catherine | Chief Executive Officer | M — Option exercise | 7.9K | $25.41 | $200K | SEC | |
| Corrigan Catherine | President & CEO | M — Option exercise | 2.4K | $29.05 | $69K | SEC | |
| Corrigan Catherine | President & CEO | M — Option exercise | 3.2K | $25.41 | $82K | SEC | |
| Corrigan Catherine | President & CEO | S — Open-market sale | 1.8K | $57.13 | $102K | SEC | |
| Corrigan Catherine | President & CEO | S — Open-market sale | 2.3K | $57.13 | $133K | SEC | |
| Brown George H. | Director | M — Option exercise | 2.0K | — | — | SEC | |
| JOHNSTON PAUL R | Director | M — Option exercise | 2.0K | — | — | SEC | |
| RICHARDSON KAREN A | Director | M — Option exercise | 2.0K | — | — | SEC | |
| Zumwalt Debra | Director | M — Option exercise | 2.0K | — | — | SEC | |
| Lindstrom Carol | Director | M — Option exercise | 2.0K | — | — | SEC | |
| James Bradley A | Group Vice President | S — Open-market sale | 2.0K | $57.47 | $115K | SEC | |
| Reiss Richard | Group Vice President | S — Open-market sale | 1.7K | $58.65 | $98K | SEC | |
| Corrigan Catherine | President & CEO | S — Open-market sale | 2.4K | $54.06 | $128K | SEC | |
| Corrigan Catherine | President & CEO | M — Option exercise | 3.2K | $25.41 | $82K | SEC | |
| Corrigan Catherine | President & CEO | M — Option exercise | 2.4K | $29.05 | $69K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for EXPONENT INC (EXPO). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Corrigan Catherine | 14 | $964K |
| Lindstrom Carol | 3 | — |
| Brown George H. | 3 | — |
| RICHARDSON KAREN A | 3 | — |
| Zumwalt Debra | 3 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in EXPO insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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