MK
Michael Stuart Klein (See Remarks) filed 3 Form 4 reports in the trailing twelve months (3 purchases, 0 sales), most often in Oklo Inc. (OKLO). Across 3 priced purchase filings, the average 21-session return was +0.8% from execution and +0.8% from disclosure (delay-adjusted; derived). The largest single filing was $5.0M of CCXIU (500,000 sh × $10.00, as filed), executed Dec 18 2025. Data as of Nov 8 2026.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+0.8%
avg across 3 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+0.8%
same 3 filings, from disclosure
Filings, ttm
3
3 buys · 0 sells
Median delay
1d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$12.0M
shares × price, as filed
Last traded
Aug 3
Filed Aug 5
Median ADV $456.1M across their filed names
Open performance→Volume by month
Buys $15.0M
Sells $9.4M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Financial Services
1 filing
Not on file
2 filings
Sector per market data · by filing · past 12 months
Most traded names
OKLORecent filings
XIIIUPURCHASE
Churchill Capital Corp XIII
View filing →
$3.5M350,000 sh × $10.00
Exec Aug 3
Filed Aug 5 · 6:21 PM ET CXIIUPURCHASE Churchill Capital Corp XII View filing → $3.5M
350,000 sh × $10.00
Exec Apr 29
Filed Apr 29 · 4:50 PM ET CCXIUPURCHASE Churchill Capital Corp XI View filing → $5.0M
500,000 sh × $10.00
Exec Dec 18 2025
Filed Dec 19 2025 · 5:16 PM ET OKLOSALE Oklo Inc. View filing → $6.7M
50,000 sh across 2 lots
Exec Sep 22 2025
Filed Sep 24 2025 · 5:30 PM ET OKLOSALE Oklo Inc. View filing → $2.7M
50,000 sh across 3 lots
Exec Jun 23 2025
Filed Jun 25 2025 · 5:30 PM ET CCCXUPURCHASE Churchill Capital Corp X/Cayman View filing → $3.0M
300,000 sh × $10.00
Exec May 15 2025
Filed May 19 2025 · 5:30 PM ET