Exponent Inc
Ownership
Ownership Structure
Who owns Exponent Inc (EXPO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.7% of the shares are freely tradable; institutional investors hold 101.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.76 | 6,068,812 | -1.6 | 03/31/2026 |
| Kayne Anderson Rudnick Investment Management LLC | 8.17 | 3,886,308 | -6.2 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 6.20 | 2,946,756 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.65 | 2,210,650 | +0.0 | 03/31/2026 |
| State Street Corp | 3.97 | 1,889,536 | +1.8 | 03/31/2026 |
| Geode Capital Management, LLC | 3.47 | 1,647,614 | +3.6 | 03/31/2026 |
| Geneva Capital Management | 2.96 | 1,405,173 | -21.7 | 06/30/2026 |
| Conestoga Capital Advisors, LLC | 2.66 | 1,265,704 | -33.6 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.57 | 1,698,572 | +0.0 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.25 | 1,545,568 | +0.4 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Corrigan Catherine | Chief Executive Officer | 129,108 | 8,805,166 $ | Aug 17, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Corrigan Catherine | Chief Executive Officer | Sell | 1,707 | 66.28 | 113,136 |
| Aug 17, 2026 | Corrigan Catherine | Chief Executive Officer | Other | 2,379 | 29.05 | 69,110 |
| Jul 28, 2026 | Corrigan Catherine | Chief Executive Officer | Other | 12,665 | 37.45 | 474,304 |
| Jul 15, 2026 | Corrigan Catherine | Chief Executive Officer | Sell | 1,737 | 62.78 | 109,045 |
| Jul 15, 2026 | Corrigan Catherine | Chief Executive Officer | Other | 2,379 | 29.05 | 69,110 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.