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

Eton Pharmaceuticals, Inc.

ETON · Nasdaq · CIK 0001710340 · Healthcare · Drug Manufacturers—Specialty & Generic

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

45 Form 4 transaction lines observed in the same window
29 sales · 16 option, withholding, award, gift or other lines

Last qualifying purchase2025-06-10 · Opaleye Management Inc. · $125.5K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

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

AprMayJunJulAugSepOct
Krempa DavidChief Business Officer
○▼○▼○▼○○▼○▼
BRYNJELSEN SEANPresident & CEO
▼○○▼▼
Opaleye Management Inc.TenPercentOwner
▼▼▼▼▼
MAIER PAUL VDirector
○○▼▼
Adams Jennifer McKieDirector
○▼
RIEDEL NORBERT GDirector
○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-06-10 · Opaleye Management Inc..

Recent Form 4 activity

0Purchases
29Sales
24Other Form 4 lines
22SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING29 sale line(s) · context only
OTHER16 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 has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

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

Shares short
1,834,090
Previous report
1,542,982
Avg daily volume
624,706
Days to cover
2.9

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
2025-06-10Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share7,930USD 15.82USD 125,453SEC filing ↗
2024-10-23Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share10,000USD 7.98USD 79,800SEC filing ↗
2024-10-08Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share33,970USD 7.03USD 238,809SEC filing ↗
2024-10-07Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share11,248USD 7.22USD 81,211SEC filing ↗
2024-10-04Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share16,852USD 6.77USD 114,088SEC filing ↗
2024-09-11Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share50,000USD 4.75USD 237,500SEC filing ↗
2024-09-10Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share57,500USD 4.65USD 267,375SEC filing ↗
2022-09-22BRYNJELSEN SEANPurchase (P)Common Stock10,000USD 2.10USD 21,000SEC filing ↗
2021-08-20Troutman William WilsonPurchase (P)Common Stock5,000USD 4.43USD 22,150SEC filing ↗
2021-08-20BRYNJELSEN SEANPurchase (P)Common Stock10,000USD 4.32USD 43,200SEC filing ↗
2021-06-03BRYNJELSEN SEANPurchase (P)Common Stock5,000USD 5.96USD 29,800SEC filing ↗
2020-10-16Opaleye Management Inc.Purchase (P)Common Stock, par value $0.001 per share400,000USD 7.00USD 2,800,000SEC filing ↗

Form 4 evidence

53 transaction lines in the latest 365-day window; 122 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Krempa DavidSale (S)Common Stock4,166USD 55.07USD 229,406SEC filing ↗
2026-10-02Krempa DavidOption exercise / conversion (M)Common Stock10,522USD —USD —SEC filing ↗
2026-08-28MAIER PAUL VSale (S)Common Stock50,000USD 59.07USD 2,953,572SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Krempa DavidSale (S)Common Stock4,166USD 55.07USD 229,406SEC filing ↗
2026-10-02Krempa DavidOption exercise / conversion (M)Common Stock10,522USD —USD —SEC filing ↗
2026-08-28MAIER PAUL VSale (S)Common Stock50,000USD 59.07USD 2,953,572SEC filing ↗
2026-08-28MAIER PAUL VOption exercise / conversion (M)Common Stock62,500USD 4.49USD 280,375SEC filing ↗
2026-08-28MAIER PAUL VSale (S)Common Stock50,000USD 59.07USD 2,953,572SEC filing ↗
2026-08-28MAIER PAUL VOption exercise / conversion (M)Common Stock50,000USD 3.78USD 189,000SEC filing ↗
2026-08-24Krempa DavidSale (S)Common Stock25,000USD 65.07USD 1,626,750SEC filing ↗
2026-08-24Krempa DavidOption exercise / conversion (M)Common Stock25,000USD 7.31USD 182,750SEC filing ↗
2026-08-20BRYNJELSEN SEANSale (S)Common Stock91,022USD 60.70USD 5,525,301SEC filing ↗
2026-08-19BRYNJELSEN SEANSale (S)Common Stock8,978USD 62.65USD 562,472SEC filing ↗
2026-07-14Opaleye Management Inc.Sale (S)Common Stock, par value $0.001 per share28,315USD 37.54USD 1,062,945SEC filing ↗
2026-07-14Opaleye Management Inc.Sale (S)Common Stock, par value $0.001 per share28,315USD 37.54USD 1,062,945SEC filing ↗
2026-07-14BRYNJELSEN SEANOption exercise / conversion (M)Common Stock200,000USD 1.37USD 274,000SEC filing ↗
2026-07-12BRYNJELSEN SEANOption exercise / conversion (M)Common Stock27,500USD —USD —SEC filing ↗
2026-07-12Krempa DavidOption exercise / conversion (M)Common Stock10,000USD —USD —SEC filing ↗
2026-07-07Opaleye Management Inc.Sale (S)Common Stock, par value $0.001 per share26,685USD 38.37USD 1,023,903SEC filing ↗
2026-07-06Opaleye Management Inc.Sale (S)Common Stock, par value $0.001 per share10,000USD 38.00USD 380,000SEC filing ↗
2026-07-02Opaleye Management Inc.Sale (S)Common Stock, par value $0.001 per share90,000USD 37.39USD 3,365,100SEC filing ↗
2026-06-17Adams Jennifer McKieSale (S)Common Stock50,000USD 32.48USD 1,624,000SEC filing ↗
2026-06-17Adams Jennifer McKieOption exercise / conversion (M)Common Stock50,000USD 3.78USD 189,000SEC filing ↗
2026-05-28BRYNJELSEN SEANSale (S)Common Stock120,000USD 31.88USD 3,825,717SEC filing ↗
2026-05-27Krempa DavidSale (S)Common Stock19,679USD 31.47USD 619,298SEC filing ↗
2026-05-27Krempa DavidOption exercise / conversion (M)Common Stock19,679USD 2.18USD 42,879SEC filing ↗
2026-05-26Krempa DavidSale (S)Common Stock37,524USD 31.49USD 1,181,631SEC filing ↗
2026-05-26Krempa DavidOption exercise / conversion (M)Common Stock37,524USD 1.38USD 51,658SEC filing ↗
2026-05-22Krempa DavidSale (S)Common Stock42,797USD 33.39USD 1,428,788SEC filing ↗
2026-05-22Krempa DavidOption exercise / conversion (M)Common Stock30,591USD 3.58USD 109,516SEC filing ↗
2026-04-21RIEDEL NORBERT GOption exercise / conversion (M)Common Stock32,155USD 8.10USD 260,605SEC filing ↗
2026-02-03RIEDEL NORBERT GX (X)Common Stock30,000USD 4.42USD 132,600SEC filing ↗
2026-01-14Krempa DavidTax withholding (F)Common Stock1,942USD 15.62USD 30,334SEC 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 · —
TickerETON
CIK0001710340
SectorHealthcare
IndustryDrug Manufacturers—Specialty & Generic Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history122 transaction lines from 2020-03-19 to 2026-10-06
19 P purchase lines · 75 S sale lines · 28 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.