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 5 of 11
101 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2014-01-13 | MU | Mixed | — | -$3.44M | EDGAR |
| 2013-11-15 | MU | Mixed | −5,650 | -$706.2K | EDGAR |
| 2013-11-13 | MU | Mixed | — | -$2.04M | EDGAR |
| 2013-10-18 | MU | Mixed | −92,278 | -$2.21M | EDGAR |
| 2013-10-15 | MU | Tax (F) | −21,345 | -$393.6K | EDGAR |
| 2013-10-09 | MU | Tax (F) | −8,267 | -$152.7K | EDGAR |
| 2013-09-05 | MU | Mixed | +43,400 | $7.9K | EDGAR |
| 2013-09-05 | MU | Sell (S) | −40,200 | -$563.3K | EDGAR |
| 2013-09-05 | MU | Sell (S) | −3,200 | -$45.2K | EDGAR |
| 2013-08-15 | MU | Mixed | — | -$206.4K | 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.