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US INSIDER PROFILE · NON-SCORING RESEARCH
Grossman Jerrold B
Director
Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0001542519
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 3
- Purchases · 24M
- 3
- Average purchase
- $83.6K
- Median purchase
- $100.1K
- Gross purchase value
- $250.9K
Companies: ADMA BIOLOGICS, INC.
3 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2026-05-28 | ADMA BIOLOGICS, INC. | ADMA | Director | $50.6K | Open filing |
| 2026-05-14 | ADMA BIOLOGICS, INC. | ADMA | Director | $100.1K | Open filing |
| 2026-05-12 | ADMA BIOLOGICS, INC. | ADMA | Director | $100.1K | Open 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.
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 3Small Sample | 100.0% (3/3) | 100.0% (3/3) | +0.3% | +1.3% | +0.3% |
| 20D | 3Small Sample | 100.0% (3/3) | 66.7% (2/3) | +2.6% | +4.5% | -2.6% |
| 60D | 3Small Sample | 100.0% (3/3) | 100.0% (3/3) | +13.3% | +15.0% | +12.7% |
| 120D | 0No Data | Awaiting maturity | — | — | — | — |
Research patterns
- First purchase in 12M
- 1/3
- Large purchase ≥ $100k
- 2/3
- Cluster buying · 15D
- 0/3
- Buying the dip
- 3/3
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.