RB
Insider
Roald Brouwer
Chief Technology OfficerRoald Brouwer (Chief Technology Officer) filed 3 Form 4 reports in the trailing twelve months (3 purchases, 0 sales), most often in Amrize Ltd (AMRZ). Across 3 priced purchase filings, the average 21-session return was +1.9% from execution and +2.8% from disclosure (delay-adjusted; derived). The largest single filing was $176K of AMRZ (3,000 sh × $58.72, as filed), executed Mar 11.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+1.9%
avg across 3 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+2.8%
same 3 filings, from disclosure
Filings, ttm
3
3 buys · 0 sells
Median delay
3d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$441K
shares × price, as filed
Last traded
Mar 13
Filed Mar 16
Median ADV $152.3M across their filed names
Open performance→Volume by month
Buys $545K
Sells $0
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Basic Materials
3 filings
Sector per market data · by filing · past 12 months
Most traded names
AMRZRecent filings
AMRZPURCHASE
Amrize Ltd
View filing →
$110K2,000 sh × $54.88
Exec Mar 13
Filed Mar 16 · 1:53 PM ET AMRZPURCHASE Amrize Ltd View filing → $176K
3,000 sh × $58.72
Exec Mar 11
Filed Mar 11 · 1:49 PM ET AMRZPURCHASE Amrize Ltd View filing → $155K
3,000 sh × $51.78
Exec Oct 31 2025
Filed Nov 4 2025 · 12:09 PM ET AMRZPURCHASE Amrize Ltd View filing → $104K
2,000 sh × $51.88
Exec Aug 27 2025
Filed Aug 27 2025 · 11:21 AM ET