Exponent Inc
EXPO- Exchange
- Nasdaq
- Industry
- Services-Management Consulting Services
- SEC CIK
- 0000851520
In the last 90 days, Exponent Inc insiders filed 1 open-market purchase and 2 sales; 340 institutions reported holding it in 13F filings for Q2 2026, worth $2.73B in total; no superinvestor holds it.
Holders of 5% or more of EXPO
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Exponent Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Conestoga Capital Advisors, LLC | 13G/A | 5.06%2.53M shares | −0.81 ppfrom 5.87% | Jan 10, 20252 filings | Jan 9, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Exponent Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 26, 20266:22 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Jan 9, 202612:06 PM ET | Conestoga Capital Advisors, LLC | 13G/A | 5.06%2.53M shares | −0.81 ppfrom 5.87% | Dec 31, 2025 | SEC |
| Jan 10, 202511:28 AM ET | Conestoga Capital Advisors, LLC | 13G/A | 5.87%2.98M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Exponent Inc shares.
No Form 144 notices for Exponent Inc are on file.