Klein Mark D purchased ~$124K in SuRo Capital Corp. stock
SuRo Capital Corp. (SSSS) · Chairman, CEO and President · Data via SEC EDGAR Form 4
Price Performance · 10 days before → 90 days after trade
▲ = insider buy date
90-day return
+20.1%vs SPY +7.5%
Trade Details · Public SEC Filing
Insider
Klein Mark D
Role
Chairman, CEO and President
Transaction
Open-Market Purchase
Approx. Value
~$124K
Trade Date
Aug 11, 2025
Company
SuRo Capital Corp.
Ticker
SSSSSource
SEC EDGAR Form 4
Why This Trade Stands Out
Strong conviction signal
Scored above average across multiple factors. Roughly 15% of insider trades qualify as Strong.
~$124K purchase
A meaningful investment of personal capital. The average insider purchase is around $150K, putting this in the typical range for serious positions.
Chairman, CEO and President
CEOs have the deepest knowledge of company operations. Academic research shows CEO purchases outperform other insider trades by a wide margin.
+20.1% in 90 days (S&P 500: +7.5%)
This trade beat the S&P 500 by 12.7 percentage points over 90 days. We track performance on every insider trade so you can see who consistently outperforms.
How good is Klein Mark D at picking stocks?
Full track record: win rate, average return, and performance vs S&P 500
On August 11, 2025, Klein Mark D — Chairman, CEO and President of SuRo Capital Corp. — filed a Form 4 with the SEC disclosing an open-market purchase of approximately ~$124K in SuRo Capital Corp. (SSSS) stock.
Under Section 16(a) of the Securities Exchange Act of 1934, corporate insiders must report all open-market stock transactions to the SEC within two business days. These filings — known as Form 4s — are publicly available on the SEC's EDGAR database. VeritySignals filters and scores the full Form 4 stream to surface high-conviction signals like this one.
In the 90 days following this trade, SSSS returned +20.1% versus +7.5% for the S&P 500 over the same period.
VeritySignals Conviction Analysis
Full Conviction Analysis
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All data sourced from publicly available SEC Form 4 filings via EDGAR · Not financial advice · Past performance does not guarantee future results.
At a Glance
More SSSS Insider Activity
Klein Mark D
Apr 22, 2026
~$197K
VS
Klein Mark D
Apr 22, 2026
~$197K
VS
Klein Mark D
Apr 21, 2026
~$66K
STRONG
Klein Mark D
Aug 12, 2025
~$373K
VS
How to Read Insider Trades
What is this?
When company executives buy or sell their own stock, they must report it to the SEC within 2 days. These public filings reveal what the people who know the company best are doing with their own money.
Why does it matter?
Insiders can sell for many reasons (taxes, diversification, expenses), but they generally only buy for one: they think the stock is going up. That's why insider purchases are more predictive than sales.
What makes a trade "strong"?
We score trades on 15+ factors: the insider's role (CEO > director), trade size relative to their salary, whether other insiders also bought (clusters), and historical accuracy of the insider.
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