Eton Pharmaceuticals, Inc.

Eton Pharmaceuticals, Inc.

ETON·NASDAQ

$27.61

+0.77%
HealthcareBiotechnology

Eton Pharmaceuticals, Inc., a specialty pharmaceutical company, focuses on developing and commercializing pharmaceutical products for rare diseases. The company offers Biorphen, a phenylephrine injection for the treatment of clinically important hypotension resulting primarily from vasodilation in the setting of anesthesia; Carglumic Acid for the treatment of acute and chronic hyperammonemia due to N-acetylglutamate Synthase deficiency; and Rezipres, a ready-to-use formulation of a molecule that is indicated for the treatment of clinically important hypotension occurring in the setting of anesthesia. It also offers Alkindi Sprinkle, a replacement therapy for adrenocortical insufficiency in children under 17 years of age; EPRONTIA, a liquid formulation of topiramate; and Alaway Preservative Free, a preservative-free ophthalmic product to treat allergic conjunctivitis. In addition, the company develops Zonisamide Oral Suspension for the treatment of partial on-set seizures; Lamotrigine for Oral Suspension for the treatment of partial on-set seizures; cysteine injection; dehydrated alcohol injection; and Zeneo hydrocortisone autoinjector. Eton Pharmaceuticals, Inc. was incorporated in 2017 and is based in Deer Park, Illinois.

At a Glance

Live Snapshot
Market Cap$756.30M
EPS-0.1700
P/E Ratio-162.41
Earnings Date08/06/2026
0.12%
Return on Invested Capital
-102%
3Y-100.0%
5Y-100.0%
10Y-100.0%
-17.59%
Return on Equity
12%
3Y-74.0%
5Y-90.0%
10Y-70.0%
-4.99%
Return on Assets
-1%
3Y-86.0%
5Y-95.0%
10Y-91.0%
Eton Pharmaceuticals, Inc.

Eton Pharmaceuticals, Inc. Management Team

ETON · NASDAQ
MD

Mr. David C. Krempa

Chief Business Officer

Compensation

$647,849

Born 1989(Age 37)
male
MI

Ms. Ipek Erdogan-Trinkaus

Chief Commercial Officer

Compensation

$435,943

Born 1982(Age 44)
female
MJ

Mr. James R. Gruber CPA

Chief Financial Officer, Treasurer & Secretary

Compensation

$647,849

Born 1972(Age 54)
male
MK

Mr. Kevin Guthrie

Executive Vice President of Commercial Operations

male
MS

Mr. Sean E. Brynjelsen

President, Chief Executive Officer & Director

Compensation

$1,116,640

Born 1972(Age 54)
male
DR

Danka Radosavljevic

Senior Vice President of Quality & Operations

MS

Mr. Scott Grossenbach

Senior Vice President of Sales Operations

male
eton

Eton Pharmaceuticals, Inc. Insider Positioning

ETON · NASDAQ

During the last 12 months, insiders have purchased $79K and sold $6.09M worth of ETON shares, resulting in $6.01M of net selling activity.

3 Months

Bought

0

0.00

Sold

152.8K

4.92M

Net Activity

-4.9M

-$4.92M

3-6 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

6-9 Months

Bought

0

0.00

Sold

0

0.00

Net Activity

+0

+$0

9-12 Months

Bought

5.0K

79.12K

Sold

75.7K

1.18M

Net Activity

-1.1M

-$1.10M

Top Buyers

1
OMI

Opaleye Management Inc.

10 Percent Owner

5.0K shares1 transactions

$79K

Top Sellers

1
BS

Brynjelsen Sean

Director, Officer: President & Ceo

119.9K shares1 transactions

$3.82M

2
KD

Krempa David

Officer: Chief Business Officer

67.0K shares4 transactions

$1.60M

3
GJR

Gruber James R.

Officer: Chief Financial Officer

41.7K shares2 transactions

$674K

Insider Activity Analysis

Net Insider Sentiment

Bearish

Strong bearish signal with $6.01M net selling. Heavy insider selling may indicate concerns about valuation or near-term prospects.

Buy/Sell Ratio

0.01:1

Very poor ratio. Heavy selling with minimal buying suggests insiders may be concerned about valuation or outlook.

Recent Trend (3 Months)

$4.92M

Heavy recent selling activity. Recent insider sales notably exceed purchases—may warrant investigation into company developments.

Insider Participation

High Selling

3 insider sellers vs. 1 buyers. Widespread selling across multiple insiders may signal concerns.

Insider Activity Insight

Multiple red flags: Heavy selling, numerous sellers, and continued recent selling create a concerning pattern. Investigate fundamental drivers and consider whether company guidance or industry conditions have deteriorated.

SEC Filings

ETON - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
DEF 14A

DEF 14A 2026

N/A

April 24, 2026
June 09, 2026
2026
DEF 14A

DEF 14A 2025

N/A

April 25, 2025
June 10, 2025
2025
DEF 14A

DEF 14A 2024

N/A

April 26, 2024
June 11, 2024
2024
DEF 14A

DEF 14A 2023

N/A

April 27, 2023
April 27, 2023
2023
DEF 14A

DEF 14A 2022

N/A

April 28, 2022
April 28, 2022
2022
DEF 14A

DEF 14A 2021

N/A

April 26, 2021
April 26, 2021
2021
DEF 14A

DEF 14A 2020

N/A

April 22, 2020
April 22, 2020
2020
DEF 14A

DEF 14A 2019

N/A

April 26, 2019
April 26, 2019
2019
Showing 1 to 8 of 8 filings