WILLIAM R KLESSE
CIK 1019718 · COB and CEO · last filed 2026-05-06
WILLIAM R KLESSE is a COB and CEO who has filed 81 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for OXY.WS, was dated May 6, 2026. Across all open-market trades the lifetime net is −$68.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $344.9M across reported positions.
"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.
$344.91M
4
81
-$67.96M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| OXY.WS | Director | 223,062 | $38.96 | $8.69M | $329.2K | 9 | 2026-05-06 |
| OXY | Director | 160,608 | $60.95 | $9.79M | $5.81M | 20 | 2020-06-03 |
| VLO | COB and CEO | 901,761 | $361.99 | $326.43M | -$74.10M | 51 | 2014-11-17 |
| VALERO ENERGY PARTNERS LP (VLP) Delisted | Director | 100,000 | — | — | $0 | 1 | 2013-12-16 |
Recent Filings
81 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-06 | OXY.WS | Mixed | +3,236 | -$55.0K | EDGAR |
| 2025-12-17 | OXY.WS | Buy (P) | +5,000 | $194.9K | EDGAR |
| 2025-05-07 | OXY.WS | Mixed | +5,024 | -$55.0K | EDGAR |
| 2025-04-02 | OXY.WS | Exer (X) | +25,900 | $551.7K | EDGAR |
| 2024-05-07 | OXY.WS | Mixed | +3,028 | -$55.1K | EDGAR |
| 2023-05-10 | OXY.WS | Mixed | +2,977 | -$49.5K | EDGAR |
| 2022-05-11 | OXY.WS | Mixed | +3,034 | -$49.6K | EDGAR |
| 2021-05-12 | OXY.WS | Mixed | +5,858 | -$44.0K | EDGAR |
| 2020-08-26 | OXY.WS | Buy (P) | +10,000 | $134.3K | EDGAR |
| 2020-06-03 | OXY | Mixed | +8,895 | -$34.7K | 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.