Form4insider filings, from the source

Company · CIK 0000851520 · SIC 8742 — Services-Management Consulting Services · Nasdaq

EXPONENT INC · EXPO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $13k · 1sales $222k · 2net −$210k
$10k$10k$100k$100k$1M$1MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 12Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 PForm 4 →Sep 22, 12:26 pm EDTShukri Jeries SouriGroup Vice President184$68.45$12,59440,873+0.45%
Aug 17, 2026 SForm 4 →Aug 18, 9:43 pm EDTCatherine CorriganChief Executive Officer, Director1,707$66.28$113,136129,108−1.30%10b5-1
Aug 17, 2026 MForm 4 →Aug 18, 9:43 pm EDTCatherine CorriganChief Executive Officer, Director2,379$29.05$69,110130,815—10b5-1
Jul 28, 2026 MForm 4 →Jul 30, 6:27 pm EDTCatherine CorriganChief Executive Officer, Director12,665$37.45$474,304128,436—
Jul 15, 2026 SForm 4 →Jul 17, 7:22 pm EDTCatherine CorriganChief Executive Officer, Director1,737$62.78$109,045115,771−1.48%10b5-1
Jul 15, 2026 MForm 4 →Jul 17, 7:22 pm EDTCatherine CorriganChief Executive Officer, Director2,379$29.05$69,110117,508—10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 17, 2026 MForm 4 →Aug 18, 9:43 pm EDTCatherine CorriganChief Executive Officer, Director2,379——0—10b5-1
Jul 28, 2026 MForm 4 →Jul 30, 6:27 pm EDTCatherine CorriganChief Executive Officer, Director12,665——12,665—
Jul 15, 2026 MForm 4 →Jul 17, 7:22 pm EDTCatherine CorriganChief Executive Officer, Director2,379——2,379—10b5-1