Robert Yu Lang Mao
CIK 1232218 · President and CEO · last filed 2024-05-24
Robert Yu Lang Mao is a President and CEO who has filed 48 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for ERII, was dated Jul 12, 2024. Across all open-market trades the lifetime net is −$5.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $3.0M 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.
$3.01M
3
48
-$5.84M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ERII | Director | 345,143 | $8.73 | $3.01M | -$6.17M | 32 | 2024-05-24 |
| CYPRESS SEMICONDUCTOR CORP /DE/ (CY) Delisted | Director | 36,842 | — | — | $0 | 1 | 2015-03-17 |
| 3COM CORP (COMS) Delisted | CEO | 4,921 | $0.00 | $8 | $333.5K | 7 | 2009-08-11 |
Recent Filings
48 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-07-12 | ERII | Notice (144) | −31,922 | -$463.6K | EDGAR |
| 2024-05-24 | ERII | Mixed | +18,858 | $19.2K | EDGAR |
| 2024-05-22 | ERII | Notice (144) | −21,045 | -$291.7K | EDGAR |
| 2024-03-06 | ERII | Mixed | +53,965 | $104.8K | EDGAR |
| 2024-03-04 | ERII | Notice (144) | −35,779 | -$563.2K | EDGAR |
| 2024-03-04 | ERII | Mixed | — | -$975.9K | EDGAR |
| 2024-03-01 | ERII | Notice (144) | −38,025 | -$616.3K | EDGAR |
| 2024-02-29 | ERII | Notice (144) | −39,314 | -$612.5K | EDGAR |
| 2023-11-13 | ERII | Exer (M) | +71,508 | $596.0K | EDGAR |
| 2023-11-08 | ERII | Mixed | +38,508 | -$1.49M | 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.