Brian Shirley
CIK 1353179 · SVP, DRAM and Emerging Memory · last filed 2026-06-17
"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
$232.52M
Companies
2
Total Filings
78
Lifetime Open-Market Net
-$37.59M
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.
Recent Filings · Page 4 of 8
78 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 |
|---|---|---|---|---|---|
| 2014-01-15 | MU | Mixed | −50,000 | -$2.74M | EDGAR |
| 2013-11-15 | MU | Mixed | — | -$1.08M | EDGAR |
| 2013-11-13 | MU | Mixed | −75,000 | -$2.92M | EDGAR |
| 2013-10-18 | MU | Mixed | −22,007 | -$1.76M | EDGAR |
| 2013-10-15 | MU | Tax (F) | −15,053 | -$277.6K | EDGAR |
| 2013-10-09 | MU | Tax (F) | −6,169 | -$113.9K | EDGAR |
| 2013-08-15 | MU | Mixed | — | -$238.2K | EDGAR |
| 2013-06-25 | MU | Mixed | — | -$845.3K | EDGAR |
| 2013-05-06 | MU | Mixed | — | -$3.1K | EDGAR |
| 2013-05-03 | MU | Mixed | −25,000 | -$691.7K | 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.