GB
Insider
Gerald M Blumenstock
EVP, Research, Dev. & Eng.Gerald M Blumenstock (EVP, Research, Dev. & Eng.) filed 3 Form 4 reports in the trailing twelve months (0 purchases, 3 sales), most often in ACLS. The largest single filing was $271K of ACLS (3,034 sh × $89.46, as filed), executed Dec 11 2025.
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
3
0 buys · 3 sells
Median delay
–
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$613K
shares × price, as filed
Last traded
May 21
Filed May 22
Volume by month
Buys $0
Sells $613K
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Not on file
3 filings
Sector per market data · by filing · past 12 months
Most traded names
ACLS
ACLS
ACLS · 0 buys · 3 sells
3 filings
Recent filings
ACLSSALE
AXCELIS TECHNOLOGIES INC
View filing →
$177K1,161 sh × $152.70
Exec May 21
Filed May 22 · 5:30 PM ET ACLSSALE AXCELIS TECHNOLOGIES INC View filing → $165K
1,015 sh × $162.32
Exec May 14
Filed May 15 · 5:30 PM ET ACLSSALE AXCELIS TECHNOLOGIES INC View filing → $271K
3,034 sh × $89.46
Exec Dec 11 2025
Filed Dec 12 2025 · 5:30 PM ET