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; 344 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 |
|---|---|---|---|---|---|---|
| Kayne Anderson Rudnick Investment Management LLC | 13G/A | 7.90%3.89M shares | – | Feb 11, 20224 filings | May 14, 2026 | SEC |
| Vanguard Portfolio Management LLC | 13G | 6.07%2.99M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.25%2.59M shares | New | Apr 29, 20261 filing | Apr 29, 2026 | SEC |
| Conestoga Capital Advisors, LLC | 13G/A | 5.06%2.53M shares | −0.81 ppfrom 5.87% | Jan 5, 20243 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
26 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 |
|---|---|---|---|---|---|---|
| May 14, 20264:05 PM ET | Kayne Anderson Rudnick Investment Management LLC | 13G/A | 7.90%3.89M shares | – | Mar 31, 2026 | SEC |
| Apr 29, 20266:41 PM ET | Vanguard Capital Management LLC | 13G | 5.25%2.59M shares | New | Mar 31, 2026 | SEC |
| Apr 29, 202612:44 PM ET | Vanguard Portfolio Management LLC | 13G | 6.07%2.99M shares | New | Mar 31, 2026 | SEC |
| 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 |
| Oct 3, 2024 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Apr 10, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Kayne Anderson Rudnick Investment Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2024 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Jan 23, 20244:13 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 5, 2024 | Conestoga Capital Advisors, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Kayne Anderson Rudnick Investment Management LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 26, 20238:52 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 20, 20233:00 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Kayne Anderson Rudnick Investment Management LLC | 13GOld format | – | New | – | SEC |
| Feb 11, 2022 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 27, 202211:13 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20223:11 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Neuberger Berman Group LLC | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20214:49 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
42 notices from officers, directors and other affiliates planning to sell Exponent Inc shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Nov 3, 20264:52 PM ET | Richard ReissOfficer | 1.28K | $110.6K | Nov 3, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 17, 20264:35 PM ET | Catherine CorriganDirector · Officer | 1.71K | $114.5K | Aug 17, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jul 15, 20264:24 PM ET | Catherine CorriganDirector · Officer | 1.74K | $107.8K | Jul 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 15, 20264:59 PM ET | Catherine CorriganDirector · Officer | 4.12K | $235.1K | Jun 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 26, 20265:09 PM ET | Bradley Allyn JamesOfficer | 2.00K | $114.9K | May 26, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 19, 20264:14 PM ET | Richard ReissOfficer | 1.67K | $98.1K | May 19, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 15, 20264:32 PM ET | Catherine CorriganDirector · Officer | 4.19K | $225.1K | May 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 13, 20264:33 PM ET | Joseph RakowOfficer | 2.94K | $161.0K | May 13, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 13, 20264:03 PM ET | Joseph SalaOfficer | 2.07K | $117.1K | May 13, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 15, 20264:43 PM ET | Catherine CorriganDirector · Officer | 3.91K | $264.1K | Apr 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 16, 20264:40 PM ET | Catherine CorriganDirector · Officer | 3.91K | $263.6K | Mar 16, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 17, 20264:37 PM ET | Catherine CorriganDirector · Officer | 3.92K | $261.8K | Feb 17, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 10, 20266:19 PM ET | John PyeOfficer | 4.00K | $303.9K | Feb 10, 2026 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jan 15, 20264:29 PM ET | Catherine CorriganDirector · Officer | 1.66K | $120.2K | Jan 15, 202610b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Dec 15, 20254:13 PM ET | Catherine CorriganDirector · Officer | 3.23K | $237.5K | Dec 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Nov 17, 20254:32 PM ET | Catherine CorriganDirector · Officer | 4.90K | $342.7K | Nov 17, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Oct 15, 20254:24 PM ET | Catherine CorriganDirector · Officer | 4.93K | $330.0K | Oct 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Sep 15, 20254:33 PM ET | Catherine CorriganDirector · Officer | 4.91K | $343.6K | Sep 15, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 14, 20255:17 PM ET | Catherine CorriganDirector · Officer | 4.90K | $355.7K | Aug 14, 202510b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Aug 12, 20256:48 PM ET | Joseph SalaOfficer | 1.59K | $112.7K | Aug 12, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 27, 20254:07 PM ET | Joseph RakowOfficer | 1.57K | $122.3K | May 27, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 23, 20256:02 PM ET | John PyeOfficer | 2.00K | $152.6K | May 23, 2025 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 20, 20254:55 PM ET | James Bradley AOfficer | 2.69K | $214.2K | May 20, 2025 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Feb 26, 20255:44 PM ET | Reiss RichardOfficer | 1.74K | $149.2K | Feb 26, 2025 | Morgan Stanley Smith Barney LLC Executive Services | SEC |
| Nov 6, 20245:04 PM ET | Paul R JohnstonDirector | 42.0K | $4.12M | Nov 6, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
Showing the latest 25. See the EXPO notices from the last 12 months