Barbara Barton Weiszhaar
CIK 1867941 · SVP/CAO · last filed 2026-05-18
Barbara Barton Weiszhaar is a SVP/CAO who has filed 4 SEC Form 4 insider transactions across 2 companies since 2021. The most recent filing, for AIAI, was dated May 18, 2026. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $966.7K across reported positions. 4 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
1501 PAGE MILL ROAD
PALO ALTO, CA 93404
Holdings By Company
Recent Filings
4 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-18 | AIAI | Mixed | −6,919 | -$522.2K | EDGAR |
| 2021-12-09 | HPQ | Mixed | — | -$742.9K | EDGAR |
| 2021-12-02 | HPQ | Sell (S) | −1,547 | -$54.7K | EDGAR |
| 2021-11-02 | HPQ | Mixed | +1,547 | -$13.4K | 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.