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 $457k · 3net −$445k
$10k$10k$100k$100k$1M$1MbuyssalesSep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026

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
Jun 25, 2026 MForm 4 →Jun 29, 6:05 pm EDTCatherine CorriganChief Executive Officer, Director7,872$25.41$199,988115,129—
Jun 15, 2026 SForm 4 →Jun 17, 5:11 pm EDTCatherine CorriganPresident & CEO, Director4,119$57.13$235,303107,257−3.70%10b5-1
Jun 15, 2026 MForm 4 →Jun 17, 5:11 pm EDTCatherine CorriganPresident & CEO, Director5,605$26.95$151,070109,050—10b5-1
Jun 3, 2026 MForm 4 →Jun 4, 9:05 pm EDTCarol LindstromDirector2,009——9,405—
Jun 3, 2026 MForm 4 →Jun 4, 9:05 pm EDTGeorge H. BrownDirector2,009——10,730—
Jun 3, 2026 MForm 4 →Jun 4, 9:05 pm EDTKaren A RichardsonDirector2,009——2,009—
Jun 3, 2026 MForm 4 →Jun 4, 9:04 pm EDTDebra ZumwaltDirector2,009——31,830—
Jun 3, 2026 MForm 4 →Jun 4, 9:04 pm EDTPaul R JohnstonDirector2,009——62,940—

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
Jun 25, 2026 MForm 4 →Jun 29, 6:05 pm EDTCatherine CorriganChief Executive Officer, Director7,872——0—
Jun 15, 2026 MForm 4 →Jun 17, 5:11 pm EDTCatherine CorriganPresident & CEO, Director5,605——4,758—10b5-1
Jun 3, 2026 AMForm 4 →Jun 4, 9:05 pm EDTCarol LindstromDirector4,868——2,859—
Jun 3, 2026 AMForm 4 →Jun 4, 9:05 pm EDTGeorge H. BrownDirector4,868——2,859—
Jun 3, 2026 AMForm 4 →Jun 4, 9:05 pm EDTKaren A RichardsonDirector4,868——2,859—
Jun 3, 2026 AMForm 4 →Jun 4, 9:04 pm EDTDebra ZumwaltDirector4,868——2,859—
Jun 3, 2026 MForm 4 →Jun 4, 9:04 pm EDTPaul R JohnstonDirector2,009——0—