Richardson Electronics, Ltd.
A distributor and maker of electron tubes, RF and microwave components, and engineered solutions used in healthcare imaging, aviation, broadcast, and industrial equipment. Founded in 1947 by Edward J. Richardson, the Illinois-based company grew from a small tube distributor into a global supplier, taking its name from its founder. Its power grid tubes help keep radar systems, medical imaging machines, and broadcast transmitters running worldwide.
Granted 80.0K
Granted 241.0K · Sold 178.5K
Granted 52.0K · Sold 37.5K
Granted 9.3K · Bought 9.0K
Granted 76.5K · Sold 56.5K
Granted 56.0K · Sold 54.0K
Granted 49.0K · Sold 49.0K
Granted 54.3K · Bought 10.0K · Sold 53.0K
Granted 49.3K · Sold 30.0K
Granted 39.3K · Bought 8.8K · Sold 30.0K
Granted 54.3K · Bought 9.2K · Sold 50.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Richardson Edward JChairman & CEO, Director, 10% owner · 18 transactions | — | 2.05M | 80.0K | — | — |
| Diddell WendyCOO, Director · 50 transactions | +41.4% | 126.4K | 241.0K | — | 178.5K |
| Ben Robert JCFO, CAO, Corporate Secretary · 36 transactions | +24.3% | 53.0K | 52.0K | — | 37.5K |
| Kluge Robert HDirector · 5 transactions | +222.3% | 48.3Kas of Jul 2025 | 9.3K | 9.0K | — |
| McNally KathleenEVP Global Supply Chain · 33 transactions | +60.9% | 47.6K | 76.5K | — | 56.5K |
| Ruppert Jens FrankEVP Canvys · 17 transactions | +26.7% | 47.5K | 56.0K | — | 54.0K |
| Peloquin Gregory JEVP PMT · 10 transactions | -56.1% | 21.2Kas of May 2024 | 49.0K | — | 49.0K |
| Benham JamesDirector · 15 transactions | +294.8% | 19.3K | 54.3K | 10.0K | 53.0K |
| Belin JacquesDirector · 11 transactions | — | 19.3K | 49.3K | — | 30.0K |
| Plante Paul JDirector · 12 transactions | — | 18.2Kas of Jul 2025 | 39.3K | 8.8K | 30.0K |
| Halverson KennethDirector · 17 transactions | — | 10.9K | 54.3K | 9.2K | 50.7K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -502.2K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.