Investors / filer profile

Klein Mark D

Chairman, CEO and President

active in 3 companies · 0 of 1 positions beat the S&P ~6mo later

Pro
Bought: Pro
Sold: 8
Filings: 3
Companies: 2026-08-10
Last filed

EDGAR · CIK 0001322402 ↗

Track record

How each disclosed position did against the S&P ~6 months later

The outcome curve and every position's resultPro →

+3.6%

median move per position

+9.4%

S&P 500 median, same spans

0 of 1

beat the S&P ~6mo later

1 position still inside the ~6-month window — not scored yet.

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$374.2K bought

All filings on record

Every Form 4 transaction we track for this filer


NSLRNeostellar Capital Corp.	Buy $250.0K · 26,040 sh	2026-08-10	—
SSSSSURO CAPITAL CORP.	Tax $3.98M · 293,265 sh	2026-06-15	—
SSSSSURO CAPITAL CORP.	Grant — · 350,000 sh	2026-06-12	—
SSSSLSURO CAPITAL CORP.	Tax $157.2K · 17,017 sh	2025-12-15	—
SSSSLSURO CAPITAL CORP.	Tax $163.2K · 17,017 sh	2025-12-10	—
SSSSLSURO CAPITAL CORP.	Grant — · 174,465 sh	2025-11-21	—
SSSSLSURO CAPITAL CORP.	Buy $84.5K · 10,000 sh	2025-08-12	—
SSSSLSURO CAPITAL CORP.	Buy $39.7K · 4,571 sh	2025-08-11	—

NSLRBuy

2026-08-10 · Neostellar Capital Corp.

$250.0K

—

SSSSTax

2026-06-15 · SURO CAPITAL CORP.

$3.98M

—

SSSSGrant

2026-06-12 · SURO CAPITAL CORP.

350,000

—

SSSSLTax

2025-12-15 · SURO CAPITAL CORP.

$157.2K

—

SSSSLTax

2025-12-10 · SURO CAPITAL CORP.

$163.2K

—

SSSSLGrant

2025-11-21 · SURO CAPITAL CORP.

174,465

—

SSSSLBuy

2025-08-12 · SURO CAPITAL CORP.

$84.5K

—

SSSSLBuy

2025-08-11 · SURO CAPITAL CORP.

$39.7K

—

8 filingsEvery Form 4 on record, with outcomesPro →

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.