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Brian Shirley

CIK 1353179 · SVP, DRAM and Emerging Memory · last filed 2026-06-17

Brian Shirley is a SVP, DRAM and Emerging Memory who has filed 78 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing shows the insider sold $459.5K of AEISE on Jun 17, 2026. Across all open-market trades the lifetime net is −$37.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $232.5M 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.

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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.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
AEISE Director 14,560 — — -$842.3K 8 2026-06-17
MU SVP, DRAM and Emerging Memory 264,961 $877.57 $232.52M -$36.75M 68 2017-07-14

Recent Filings

78 filings
Insider 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
2026-06-17 AEISE Sell (S) −1,234 -$459.5K EDGAR
2026-06-15 AEIS Notice (144) −1,234 -$459.5K EDGAR
2026-05-08 AEISE Grant (A) — $0 EDGAR
2026-05-05 AEISE Exer (M) +2,313 $0 EDGAR
2026-03-13 AEIS Notice (144) −1,234 -$382.8K EDGAR
2026-03-13 AEISE Sell (S) −1,234 -$382.8K EDGAR
2025-05-06 AEISE Mixed +2,093 $0 EDGAR
2024-05-07 AEISE Mixed +2,257 $0 EDGAR
2023-05-09 AEISE Grant (A) — $0 EDGAR
2022-06-17 AEISE Grant (A) +2,468 $0 EDGAR
Showing 1–10 of 78
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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.