Dion J Weisler
CIK 1580693 · President and CEO · last filed 2026-09-29
Dion J Weisler is a President and CEO who has filed 101 SEC Form 4 insider transactions across 3 companies since 2013. The most recent filing, for TMO, was dated Sep 29, 2026. Across all open-market trades the lifetime net is −$64.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $35.9M across reported positions. 45 SEC filings were submitted jointly with HEWLETT PACKARD CO.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
HPQ price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
2200 MISSION COLLEGE BLVD
SANTA CLARA, CA 95747
Holdings By Company
Recent Filings
101 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-29 | TMO | Grant (A) | — | $0 | EDGAR |
| 2026-05-22 | TMO | Mixed | +418 | -$36.3K | EDGAR |
| 2026-05-15 | INTC | Grant (A) | — | $0 | EDGAR |
| 2026-05-08 | INTC | Exer (M) | +12,552 | $0 | EDGAR |
| 2026-03-31 | TMO | Grant (A) | — | $0 | EDGAR |
| 2026-01-05 | TMO | Grant (A) | — | $0 | EDGAR |
| 2025-09-30 | TMO | Grant (A) | — | $0 | EDGAR |
| 2025-07-01 | TMO | Grant (A) | — | $0 | EDGAR |
| 2025-05-22 | TMO | Mixed | +511 | -$21.3K | EDGAR |
| 2025-05-08 | INTC | Mixed | +7,954 | -$68.0K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.