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US INSIDER PROFILE · NON-SCORING RESEARCH

STEINBERG JOSEPH S

10% Owner | Chairman of the Board | Director

Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0000924255

Purchase history

Companies traded
4
Purchases · 12M
4
Purchases · 24M
6
Average purchase
$407.7K
Median purchase
$371.4K
Gross purchase value
$2.4M

Companies: Crimson Wine Group, Ltd | Jefferies Financial Group Inc. | NOCOPI TECHNOLOGIES INC/MD/ | Vitesse Energy, Inc.

6 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.

Qualifying purchase disclosures

PublishedCompanyTickerRoleReported valueSEC source
2026-06-17Vitesse Energy, Inc.VTSDirector$660.7KOpen filing
2026-06-01Vitesse Energy, Inc.VTSDirector$1.0MOpen filing
2026-05-26Crimson Wine Group, LtdCWGLDirector | 10% Owner$30.3KOpen filing
2025-11-24Crimson Wine Group, LtdCWGLDirector | 10% Owner$527.3KOpen filing
2025-06-10NOCOPI TECHNOLOGIES INC/MD/NNUP10% Owner$215.4KOpen filing
2024-11-14Jefferies Financial Group Inc.JEFChairman of the Board$7.5KOpen filing

Post-purchase outcomes

Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.

PeriodCompleted eventsPrice coverageHit rateMedian excess returnAverage excess returnWorst excess return
5D1Small Sample16.7% (1/6)100.0% (1/1)+4.9%+4.9%+4.9%
20D1Small Sample16.7% (1/6)100.0% (1/1)+8.8%+8.8%+8.8%
60D1Small Sample16.7% (1/6)0.0% (0/1)-6.2%-6.2%-6.2%
120D1Small Sample33.3% (1/3)0.0% (0/1)-24.6%-24.6%-24.6%

Research patterns

First purchase in 12M
2/4
Large purchase ≥ $100k
4/6
Cluster buying · 15D
3/6
Buying the dip
0/1

Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.

Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.