Pro Dex Inc
PDEX- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0000788920
In the last 90 days, Pro Dex Inc insiders filed 0 open-market purchases and 4 sales; 66 institutions reported holding it in 13F filings for Q2 2026, worth $43.0M in total; no superinvestor holds it.
Holders of 5% or more of PDEX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Pro Dex Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| AO Partners I, LP | 13D/A | 31.20%1.02M shares | – | Apr 4, 20251 filing | Apr 4, 2025 | SEC |
| Farnam Street Partners LP | 13D/A | 8.80%285.8K shares | −1.00 ppfrom 9.80% | Jan 29, 20252 filings | Mar 27, 2025 | 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 Pro Dex Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 4, 20255:29 PM ET | AO Partners I, LPand 3 others | 13D/A | 31.20%1.02M shares | – | Apr 2, 2025 | SEC |
| Mar 27, 20257:03 PM ET | Farnam Street Partners LPand 3 others | 13D/A | 8.80%285.8K shares | −1.00 ppfrom 9.80% | Mar 25, 2025 | SEC |
| Jan 29, 20254:39 PM ET | Farnam Street Partners LPand 3 others | 13D/A | 9.80%319.8K shares | – | Jan 27, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Pro Dex Inc shares.
No Form 144 notices for Pro Dex Inc are on file.