Robert Yu Lang Mao
CIK 1232218 · President and CEO · last filed 2024-05-24
"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.
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Disclosed Exposure
$3.01M
Companies
3
Total Filings
48
Lifetime Open-Market Net
-$5.84M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 2 of 5
48 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-11-07 | ERII | Notice (144) | −121,383 | -$2.19M | EDGAR |
| 2023-11-06 | ERII | Notice (144) | −130,000 | -$2.31M | EDGAR |
| 2023-10-30 | ERII | Grant (A) | +4,153 | $0 | EDGAR |
| 2023-07-27 | ERII | Grant (A) | +32,695 | $0 | EDGAR |
| 2023-02-01 | ERII | Grant (A) | +14,012 | $300.0K | EDGAR |
| 2022-08-11 | ERII | Mixed | +15,236 | $48.7K | EDGAR |
| 2022-02-01 | ERII | Grant (A) | — | $0 | EDGAR |
| 2021-10-04 | ERII | Gift (G) | −121,403 | $0 | EDGAR |
| 2021-10-04 | ERII | Gift (G) | −121,403 | $0 | EDGAR |
| 2021-02-03 | ERII | Grant (A) | — | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.