Exponent Inc (EXPO) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Sep 22, 2026.
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- Filings shown
- 9
- Open-market buys
- 1
- Open-market sells
- 4
- Buys, 10b5-1 box not checked
- 1 of 1
Counts cover the 9 most recent Form 4 filings Tradune holds for EXPO (filed Jun 4 – Sep 22, 2026); the score below covers only the trailing 90 days (1 buy, 1 sell). No completed check of EXPO's Form 4 list on SEC EDGAR is on record yet; the latest EXPO filing Tradune holds was filed Sep 22, 2026. This is not guaranteed to be the complete record — see EXPO's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 3 filings Tradune holds for EXPO filed Jul 30 – Sep 22, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
1 open-market sale by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 1 sale· 1,707 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Catherine CorriganChief Executive Officer | 0 | 1 | — | 1,707 | −$113,136 |
| Shukri Jeries SouriGroup Vice President | 1 | 0 | 184 | — | +$12,594 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at EXPO
Insiders reported 1 open-market purchase of EXPO between Jun 4, 2026 and Sep 22, 2026, across 1 distinct buyer. The most recent purchase was reported by Shukri Jeries Souri (Group Vice President) on Sep 18, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 184 | $68.45 | 40,873 | +0.5% | Sep 18, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 2,379 | $29.05 | 130,815 | +1.9% | Aug 17, 2026 |
| Option exercise Non-Qualified Stock Option (right to buy) | 2,379 | — | — | — | Aug 17, 2026 |
| Open-market sale 10b5-1 box checked | 1,707 | $66.28 | 129,108 | −1.3% | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Non-Qualified Stock Option (right to buy) | 12,665 | — | — | — | Jul 28, 2026 |
| Option exercise | 12,665 | $37.45 | 128,436 | +11% | Jul 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,737 | $62.78 | 115,771 | −1.5% | Jul 15, 2026 |
| Option exercise Non-Qualified Stock Option (right to buy) | 2,379 | — | — | — | Jul 15, 2026 |
| Option exercise | 2,379 | $29.05 | 117,508 | +2.1% | Jul 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Incentive Stock Option (right to buy) | 7,872 | — | — | — | Jun 25, 2026 |
| Option exercise | 7,872 | $25.41 | 115,129 | +7.3% | Jun 25, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,326 | $57.13 | 106,670 | −2.1% | Jun 15, 2026 |
| Option exercise | 2,380 | $29.05 | 109,050 | +2.2% | Jun 15, 2026 |
| Open-market sale 10b5-1 box checked | 1,793 | $57.13 | 107,257 | −1.6% | Jun 15, 2026 |
| Option exercise Non-Qualified Stock Option (right to buy) | 3,225 | — | — | — | Jun 15, 2026 |
| Option exercise Non-Qualified Stock Option (right to buy) | 2,380 | — | — | — | Jun 15, 2026 |
| Option exercise | 3,225 | $25.41 | 108,996 | +3.0% | Jun 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Stock Units | 2,859 | — | — | — | Jun 4, 2026 |
| Option exercise Restricted Stock Units | 2,009 | — | — | — | Jun 3, 2026 |
| Option exercise | 2,009 | — | 9,405 | +27% | Jun 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Stock Units | 2,859 | — | — | — | Jun 4, 2026 |
| Option exercise | 2,009 | — | 10,730 | +23% | Jun 3, 2026 |
| Option exercise Restricted Stock Units | 2,009 | — | — | — | Jun 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Restricted Stock Units | 2,859 | — | — | — | Jun 4, 2026 |
| Option exercise | 2,009 | — | 2,009 | — | Jun 3, 2026 |
| Option exercise Restricted Stock Units | 2,009 | — | — | — | Jun 3, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to EXPO's (Sep 22, 2026).
Frequently asked about EXPO insider activity
How many insiders bought EXPO stock in these Form 4 filings?
1 distinct insider at Exponent Inc reported 1 open-market purchase (Form 4 code P) of EXPO shares between Jun 4, 2026 and Sep 22, 2026, the most recent filed by Shukri Jeries Souri (Group Vice President) on Sep 18, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for EXPO?
The most recent Form 4 on this page was filed by Shukri Jeries Souri (Group Vice President) on Sep 22, 2026, reporting 1 transaction. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market EXPO insider sale shown?
The largest open-market sale among the filings shown was 2,326 EXPO shares at $57.13 (about $132,876) by Catherine Corrigan (President & CEO) on Jun 15, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
Do the recent EXPO insider purchases have the Form 4 10b5-1 box checked?
No. The one EXPO open-market purchase shown was reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: Shukri Jeries Souri (Group Vice President) on Sep 18, 2026, 184 shares.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track EXPO insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.