Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

ADMA BIOLOGICS, INC.

ADMA · Nasdaq · CIK 0001368514 · Healthcare · Biotechnology

INSIDER SIGNAL

49.4 / 100

1 buyers · 3 purchase transaction lines · $250.9K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeModerate
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+7.0 / 35
Purchase size+11.4 / 25
Role+20.0 / 20
Recency+0.9 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 1 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Purchase activity is becoming less recent
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Grossman Jerrold BDirector
●●●
Kestenberg-Messina Kaitlin M.COO and SVP, Compliance
○
Kohler TerryCFO and Treasurer
○
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Grossman Jerrold B · $250.9K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-11–2026-05-12

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

49.4 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 49.5
  2. 49.5
  3. 49.5
  4. 49.4
  5. 49.4

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

5Purchases
11Sales
32Other Form 4 lines
27SEC filings · 365 days
BUYING3 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER2 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+5.5%
3M
+9.8%
6M
+8.9%
12M
-30.4%

Volatility & liquidity

Volatility
56.6%
Beta
0.69
Avg daily value
USD 26.4M

Valuation

Market cap
USD 2.3B
P/E
14.4×

Fundamentals

Profit margin
28.8%
ROE
30.8%
Industry
Biotechnology

Market data

Price data up to: 2026-10-05 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · From Yahoo Finance: Market cap, P/E · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
20,597,867
Previous report
24,206,749
Avg daily volume
3,633,588
Days to cover
5.7

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2026-05-27Grossman Jerrold BPurchase (P)Common Stock6,400USD 7.91USD 50,624SEC filing ↗
2026-05-12Grossman Jerrold BPurchase (P)Common Stock12,500USD 8.01USD 100,125SEC filing ↗
2026-05-11Grossman Jerrold BPurchase (P)Common Stock12,500USD 8.01USD 100,125SEC filing ↗
2026-03-06ELMS STEVEPurchase (P)Common Stock7,000USD 15.39USD 107,730SEC filing ↗
2026-03-05ELMS STEVEPurchase (P)Common Stock7,000USD 15.67USD 109,690SEC filing ↗
2023-08-30Grossman Jerrold BPurchase (P)Common Stock130,000USD 3.71USD 482,300SEC filing ↗
2023-08-24KWON YOUNGPurchase (P)Common Stock25,000USD 3.90USD 97,500SEC filing ↗
2022-12-09LENZ BRIANPurchase (P)Common Stock6,993USD 2.86USD 20,000SEC filing ↗
2022-12-09Grossman Adam SPurchase (P)Common Stock29,965USD 2.86USD 85,700SEC filing ↗
2021-10-25LENZ BRIANPurchase (P)Common Stock30,000USD 1.00USD 30,000SEC filing ↗
2021-10-25KWON YOUNGPurchase (P)Common Stock100,000USD 1.00USD 100,000SEC filing ↗
2021-10-25Grossman Jerrold BPurchase (P)Common Stock100,000USD 1.00USD 100,000SEC filing ↗
2021-10-25Grossman Adam SPurchase (P)Common Stock350,000USD 1.00USD 350,000SEC filing ↗
2020-09-11DEMSKI MARTHA JPurchase (P)Common Stock2,200USD 2.29USD 5,038SEC filing ↗
2020-09-10Grossman Jerrold BPurchase (P)Common Stock5,000USD 2.22USD 11,100SEC filing ↗

Form 4 evidence

48 transaction lines in the latest 365-day window; 297 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-24Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock3,177USD 8.37USD 26,591SEC filing ↗
2026-07-16Kohler TerryAward / grant (A)Common Stock85,130USD 0.00USD 0SEC filing ↗
2026-05-27Grossman Jerrold BPurchase (P)Common Stock6,400USD 7.91USD 50,624SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-24Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock3,177USD 8.37USD 26,591SEC filing ↗
2026-07-16Kohler TerryAward / grant (A)Common Stock85,130USD 0.00USD 0SEC filing ↗
2026-05-27Grossman Jerrold BPurchase (P)Common Stock6,400USD 7.91USD 50,624SEC filing ↗
2026-05-12Grossman Jerrold BPurchase (P)Common Stock12,500USD 8.01USD 100,125SEC filing ↗
2026-05-11Grossman Jerrold BPurchase (P)Common Stock12,500USD 8.01USD 100,125SEC filing ↗
2026-04-01Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock20,362USD 9.11USD 185,498SEC filing ↗
2026-03-17Guiheen Lawrence P.Gift (G)Common Stock30,000USD 0.00USD 0SEC filing ↗
2026-03-16Grossman Adam SSale (S)Common Stock21,000USD 15.16USD 318,360SEC filing ↗
2026-03-16Grossman Adam SOption exercise / conversion (M)Common Stock15,000USD 5.40USD 81,000SEC filing ↗
2026-03-13Guiheen Lawrence P.Option exercise / conversion (M)Common Stock30,000USD 3.66USD 109,800SEC filing ↗
2026-03-09Kestenberg-Messina Kaitlin M.Sale (S)Common Stock10,096USD 15.63USD 157,800SEC filing ↗
2026-03-09Kestenberg-Messina Kaitlin M.Option exercise / conversion (M)Common Stock10,096USD 3.20USD 32,331SEC filing ↗
2026-03-09Kestenberg-Messina Kaitlin M.J (J)Common Stock91,266USD 0.00USD 0SEC filing ↗
2026-03-07Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock4,235USD 15.39USD 65,177SEC filing ↗
2026-03-07Grossman Adam STax withholding (F)Common Stock29,513USD 15.39USD 454,205SEC filing ↗
2026-03-06Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock10,059USD 15.39USD 154,808SEC filing ↗
2026-03-06Grossman Adam STax withholding (F)Common Stock56,438USD 15.39USD 868,581SEC filing ↗
2026-03-06ELMS STEVEPurchase (P)Common Stock7,000USD 15.39USD 107,730SEC filing ↗
2026-03-05ELMS STEVEPurchase (P)Common Stock7,000USD 15.67USD 109,690SEC filing ↗
2026-02-26Grossman Adam STax withholding (F)Common Stock54,858USD 15.18USD 832,744SEC filing ↗
2026-02-19Tade Brad L.Tax withholding (F)Common Stock6,479USD 16.32USD 105,737SEC filing ↗
2026-02-19Kestenberg-Messina Kaitlin M.Tax withholding (F)Common Stock8,161USD 16.32USD 133,188SEC filing ↗
2026-02-19Grossman Adam STax withholding (F)Common Stock24,793USD 16.32USD 404,622SEC filing ↗
2026-02-17Grossman Adam SSale (S)Common Stock21,000USD 16.08USD 337,680SEC filing ↗
2026-02-17Grossman Adam SOption exercise / conversion (M)Common Stock15,000USD 5.40USD 81,000SEC filing ↗
2026-02-09Salas Eduardo ReneAward / grant (A)Common Stock10,690USD 0.00USD 0SEC filing ↗
2026-02-09Kestenberg-Messina Kaitlin M.Award / grant (A)Common Stock91,631USD 0.00USD 0SEC filing ↗
2026-02-09KWON YOUNGAward / grant (A)Common Stock10,690USD 0.00USD 0SEC filing ↗
2026-02-09Guiheen Lawrence P.Award / grant (A)Common Stock10,690USD 0.00USD 0SEC filing ↗
2026-02-09Grossman Jerrold BAward / grant (A)Common Stock10,690USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerADMA
CIK0001368514
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeNasdaq

Data coverage

Local Form 4 history297 transaction lines from 2020-02-11 to 2026-07-24
40 P purchase lines · 61 S sale lines · 196 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.