SEC Form 4 · Updated Daily
PDEX
— PRO-DEX, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| COSS RONALD G | 10%+ Owner | 956,879 | 2009-11-09 | S |
| AO Partners I, LP | 10%+ Owner | 926,730 | 2019-02-21 | S |
| MURPHY MARK PHILLIP | Director · Officer | 621,131 | 2009-11-06 | P |
| JOHNSON PATRICK L | Officer | 433,430 | 2009-11-03 | S |
| Haeg Peter O. | 10%+ Owner | 360,846 | 2021-09-10 | — |
| FARNAM STREET PARTNERS LP /MN | 10%+ Owner | 270,846 | 2025-04-01 | S |
| RITCHEY JEFFREY J | Officer | 136,000 | 2008-06-13 | P |
| Swenson Nicholas John | 10%+ Owner · Director | 97,613 | 2025-11-20 | A |
| Van Kirk Richard Lee Jr | Director · Officer | 79,703 | 2026-09-11 | S |
| Charlton Alisha | Officer | 22,670 | 2026-09-09 | S |
| Domingo Angelita Rebamontan | Director | 18,798 | 2026-07-23 | A |
| Philp Katrina Marie Kramer | Director | 16,896 | 2025-11-21 | A |
| Holder David | Director | 12,633 | 2012-11-28 | A |
| Berthelot Michael J | Director | 11,667 | 2012-11-29 | A |
| HEALEY WILLIAM L | Director | 10,000 | 2012-11-28 | A |
| HURWITZ HAROLD A | Director · Officer | 7,203 | 2014-04-30 | P |
| HOVDA DAVID | Director | 4,300 | 2025-11-20 | A |
| CABILLOT RAYMOND E | 10%+ Owner · Director | 2,000 | 2025-11-20 | A |
| Farrell William James III | Director | 2,000 | 2025-11-20 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-11 | Van Kirk Richard Lee Jr | Open-market sale | 475 | $59.62 | 79,228 |
| 2026-09-11 | Van Kirk Richard Lee Jr | Open-market sale | 290 | $58.94 | 79,703 |
| 2026-09-09 | Charlton Alisha | Open-market sale | 800 | $61.76 | 21,870 |
| 2026-09-09 | Charlton Alisha | Open-market sale | 1,500 | $61.05 | 22,670 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 4,768 | $59.45 | 79,993 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 806 | $58.66 | 84,761 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 300 | $64.70 | 85,567 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 2,144 | $63.85 | 85,867 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 935 | $62.93 | 88,011 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 1,157 | $61.88 | 88,946 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 4,274 | $60.72 | 90,103 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 2,691 | $59.84 | 94,377 |
| 2026-09-09 | Van Kirk Richard Lee Jr | Open-market sale | 2,160 | $58.92 | 97,068 |
| 2026-07-23 | Domingo Angelita Rebamontan | Grant / award | 19 | $33.25 | 18,798 |
| 2026-07-01 | Van Kirk Richard Lee Jr | Tax withholding | 5,279 | $62.74 | 99,228 |
| 2026-07-01 | Van Kirk Richard Lee Jr | Grant / award | 14,800 | $0.00 | 104,507 |
| 2026-07-01 | Domingo Angelita Rebamontan | Tax withholding | 2,488 | $62.74 | 19,777 |
| 2026-07-01 | Domingo Angelita Rebamontan | Grant / award | 6,800 | $0.00 | 22,265 |
| 2026-07-01 | Charlton Alisha | Tax withholding | 3,897 | $62.74 | 24,170 |
| 2026-07-01 | Charlton Alisha | Grant / award | 10,800 | $0.00 | 28,067 |
| 2026-05-22 | Van Kirk Richard Lee Jr | Open-market sale | 50 | $63.63 | 89,707 |
| 2026-05-22 | Van Kirk Richard Lee Jr | Open-market sale | 1,254 | $62.93 | 89,757 |
| 2026-05-22 | Van Kirk Richard Lee Jr | Open-market sale | 2,824 | $62.09 | 91,011 |
| 2026-05-21 | Van Kirk Richard Lee Jr | Open-market sale | 550 | $63.92 | 93,835 |
| 2026-05-21 | Van Kirk Richard Lee Jr | Open-market sale | 3,404 | $62.96 | 94,385 |
| 2026-05-21 | Van Kirk Richard Lee Jr | Open-market sale | 1,918 | $62.22 | 97,789 |
| 2026-03-16 | Domingo Angelita Rebamontan | Open-market sale | 998 | $47.24 | 18,779 |
| 2026-01-22 | Domingo Angelita Rebamontan | Grant / award | 18 | $34.36 | 15,465 |
| 2025-11-21 | Philp Katrina Marie Kramer | Grant / award | 2,200 | $32.70 | 16,896 |
| 2025-11-21 | Philp Katrina Marie Kramer | Grant / award | 900 | $32.73 | 2,900 |
| 2025-11-20 | CABILLOT RAYMOND E | Grant / award | 1,000 | $0.00 | 2,000 |
| 2025-11-20 | Charlton Alisha | Grant / award | 1,000 | $0.00 | 17,267 |
| 2025-11-20 | Charlton Alisha | Tax withholding | 72 | $30.83 | 16,267 |
| 2025-11-20 | Domingo Angelita Rebamontan | Grant / award | 1,000 | $0.00 | 15,447 |
| 2025-11-20 | Domingo Angelita Rebamontan | Tax withholding | 72 | $30.83 | 14,447 |
| 2025-11-20 | Farrell William James III | Grant / award | 1,000 | $0.00 | 2,000 |
| 2025-11-20 | HOVDA DAVID | Grant / award | 1,000 | $0.00 | 4,300 |
| 2025-11-20 | Philp Katrina Marie Kramer | Grant / award | 1,000 | $0.00 | 2,000 |
| 2025-11-20 | Swenson Nicholas John | Grant / award | 1,000 | $0.00 | 97,613 |
| 2025-11-20 | Van Kirk Richard Lee Jr | Tax withholding | 72 | $30.83 | 99,707 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.