RONALD C FOSTER
CIK 1222896 · CFO & VP OF FINANCE · last filed 2026-05-08
"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
$571.95M
Companies
4
Total Filings
101
Lifetime Open-Market Net
-$30.21M
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 |
|---|---|---|---|---|---|---|---|
| AEISE | Director | 25,088 | — | — | -$1.12M | 24 | 2026-05-08 |
| MRAM | Director | 32,586 | $24.41 | $795.4K | $0 | 4 | 2020-05-20 |
| MU | CFO & VP OF FINANCE | 581,442 | $981.61 | $570.75M | -$28.39M | 66 | 2015-02-19 |
| FORM | Sr. VP & CFO | 2,883 | $139.21 | $401.3K | -$702.9K | 7 | 2007-06-18 |
Recent Filings · Page 10 of 11
101 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2009-04-01 | MU | Tax (F) | −7,329 | -$29.8K | EDGAR |
| 2009-04-01 | MU | Grant (A) | +188,444 | $0 | EDGAR |
| 2008-10-07 | MU | Mixed | +250,000 | $0 | EDGAR |
| 2008-04-03 | MU | Mixed | +188,444 | $0 | EDGAR |
| 2007-06-18 | FORM | Mixed | — | -$36.3K | EDGAR |
| 2007-05-18 | FORM | Grant (A) | — | $0 | EDGAR |
| 2007-05-04 | FORM | Mixed | — | -$36.3K | EDGAR |
| 2007-04-05 | FORM | Mixed | — | -$39.5K | EDGAR |
| 2007-04-04 | FORM | Mixed | — | -$39.5K | EDGAR |
| 2007-03-02 | FORM | Mixed | — | -$80.7K | EDGAR |
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.