Walter Isaacson
CIK 1270821 · last filed 2026-10-02
Walter Isaacson is a corporate insider who has filed 72 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for UAL, was dated Oct 2, 2026. Across all open-market trades the lifetime net is −$420.0K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $610.5K across reported positions. 72 SEC filings were submitted jointly with United Continental Holdings, Inc.
"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.
UAL 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
233 S WACKER
CHICAGO, IL 60606
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| UAL | Director | 6,353 | $96.10 | $610.5K | -$420.0K | 57 | 2026-10-02 |
| United Airlines Holdings, Inc. (UAUA) Delisted | Director | — | — | — | $0 | 13 | 2010-10-01 |
| READERS DIGEST ASSOCIATION INC (RDA) Delisted | Director | 17,600 | — | — | $0 | 1 | 2007-02-15 |
Recent Filings
72 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-10-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2026-07-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2026-05-22 | UAL | Grant (A) | — | $0 | EDGAR |
| 2026-04-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2026-01-05 | UAL | Grant (A) | — | $0 | EDGAR |
| 2025-10-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2025-07-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2025-05-27 | UAL | Grant (A) | — | $0 | EDGAR |
| 2025-04-02 | UAL | Grant (A) | — | $0 | EDGAR |
| 2025-01-03 | UAL | Grant (A) | — | $0 | 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.