DB
Insider
Darin G Billerbeck
DirectorDarin G Billerbeck (Director) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in Everspin Technologies, Inc. (MRAM). The largest single filing was $1.1M of MRAM (30,000 sh × $37.16, as filed), executed May 11.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
2
0 buys · 2 sells
Median delay
–
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$1.2M
shares × price, as filed
Last traded
May 11
Filed May 13
Median ADV $39.2M across their filed names
Open performance→Volume by month
Buys $0
Sells $1.2M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Technology
2 filings
Sector per market data · by filing · past 12 months
Most traded names
MRAMRecent filings
MRAMSALE
Everspin Technologies, Inc.
View filing →
$1.1M30,000 sh × $37.16
Exec May 11
Filed May 13 · 5:30 PM ET MRAMSALE Everspin Technologies, Inc. View filing → $113K
12,000 sh × $9.42
Exec Nov 10 2025
Filed Nov 12 2025 · 5:30 PM ET