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 196.6K · Sold 27.8K
Granted 384.7K · Bought 2.1K · Sold 236.8K
Granted 114.5K · Bought 5.0K · Sold 62.3K
Granted 20.0K · Sold 5.0K
Granted 24.3K · Bought 24.0K
Granted 158.5K · Sold 119.1K
Granted 93.5K · Sold 54.0K
Granted 55.0K · Sold 55.0K
Granted 105.0K · Sold 159.6K
Granted 154.2K · Bought 3.0K · Sold 107.9K
Granted 10.0K · Bought 11.0K
Granted 54.3K · Bought 20.0K · Sold 58.0K
Granted 49.3K · Sold 30.0K
Granted 39.3K · Bought 8.8K · Sold 30.0K
Granted 11.0K · Bought 6.0K
Granted 54.3K · Bought 9.2K · Sold 50.7K
Granted 15.0K · Sold 15.0K
Granted 7.5K
Granted 25.0K · Sold 25.0K
Granted 14.4K · Bought 1.0K · Sold 14.4K
Granted 1.2K
Granted 5.2K · Sold 3.8K
Bought 2.1K
Granted 93
Granted 14.7K · Sold 14.7K
Bought 1.0K
Granted 357
Granted 40.0K · Sold 67.0K
Granted 10.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Richardson Edward JChairman & CEO, Director, 10% owner · 33 transactions | — | 2.05M | 196.6K | — | 27.8K |
| Diddell WendyCOO, Director · 100 transactions | — | 126.4K | 384.7K | 2.1K | 236.8K |
| Ben Robert JCFO, CAO, Corporate Secretary · 71 transactions | — | 53.0K | 114.5K | 5.0K | 62.3K |
| Hodes ScottDirector · 7 transactions | — | 49.7Kas of May 2013 | 20.0K | — | 5.0K |
| Kluge Robert HDirector · 9 transactions | — | 48.3Kas of Jul 2025 | 24.3K | 24.0K | — |
| McNally KathleenEVP Global Supply Chain · 62 transactions | — | 47.6K | 158.5K | — | 119.1K |
| Ruppert Jens FrankEVP Canvys · 21 transactions | — | 47.5K | 93.5K | — | 54.0K |
| Rubinovitz SamuelDirector · 13 transactions | — | 29.6Kas of Apr 2011 | 55.0K | — | 55.0K |
| Johnson Bruce WDirector · 29 transactions | — | 25.0Kas of May 2007 | 105.0K | — | 159.6K |
| Peloquin Gregory JEVP PMT · 31 transactions | — | 21.2Kas of May 2024 | 154.2K | 3.0K | 107.9K |
| Dvorak Kathleen SEVP, CFO & Chief Strategic · 3 transactions | — | 21.0Kas of Apr 2010 | 10.0K | 11.0K | — |
| Benham JamesDirector · 19 transactions | — | 19.3K | 54.3K | 20.0K | 58.0K |
| 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 |
| Petrini Bart FEVP & GM, EDG · 4 transactions | — | 12.0Kas of Oct 2008 | 11.0K | 6.0K | — |
| Halverson KennethDirector · 17 transactions | — | 10.9K | 54.3K | 9.2K | 50.7K |
| Peterson JohnDirector · 6 transactions | — | 10.0Kas of Apr 2010 | 15.0K | — | 15.0K |
| Fitzgerald Patrick Thomas IIIEVP Healthcare · 1 transaction | — | 7.5Kas of Oct 2017 | 7.5K | — | — |
| Ketelaars AdDirector · 10 transactions | — | 5.0Kas of Feb 2011 | 25.0K | — | 25.0K |
| Dudek JamesController & Chief Accounting · 18 transactions | — | 2.7Kas of Nov 2013 | 14.4K | 1.0K | 14.4K |
| Gilmartin David JVP, General Counsel & Sec. · 1 transaction | — | 2.6Kas of Jun 2006 | 1.2K | — | — |
| Blaney Lawrence CVP & General Manager · 7 transactions | — | 2.6Kas of Nov 2006 | 5.2K | — | 3.8K |
| Badger Kyle CEVP, General Counsel & Sec. · 1 transaction | — | 2.1Kas of Jan 2008 | — | 2.1K | — |
| Kennedy Murray JExec. VP & General Manager · 1 transaction | — | 2.0Kas of Oct 2006 | 93 | — | — |
| Grill Joseph CExecutive Vice President · 8 transactions | — | 1.5Kas of May 2007 | 14.7K | — | 14.7K |
| Albregts DouglasVP & GM, Display Systems Group · 1 transaction | — | 1.0Kas of Jan 2008 | — | 1.0K | — |
| Bauer Michael JSenior VP & Chief HR Officer · 1 transaction | — | 357as of May 2008 | 357 | — | — |
| Purkey Harold LDirector · 19 transactions | — | 0as of May 2011 | 40.0K | — | 67.0K |
| Beotra SandeepEVP Mergers & Acquisitions · 1 transaction | — | 0as of Dec 2012 | 10.0K | — | — |
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 all recorded history: -1.04M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.