NASDAQ:ETON

Eton Pharmaceuticals Stock Insider Trading

Healthcare > Biotechnology

Buy ETON

*Your capital is at risk

$46.42

-2.61 (-5.32%)

At Close: Jul 31, 2026

Eton Pharmaceuticals Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -81.84. In total, the insiders bought 1.76M and sold 1.05M ETON shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-81.84
● Buy	1.76M shares
● Sell	1.05M shares
57% Buy Activity Moderate Negative Correlation
Buy Signal Low Confidence Jun 01, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory negative Insider Power Score of -81.84. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 12, 2025 Sell	Common Stock S-Sale	Krempa David Chief Business Officer	Officer	16 977 Value: $253.3K
Jun 10, 2025 Buy	Common Stock, par value $0.001 per share P-Purchase	Opaleye Management Inc. 10 Percent Owner	10% Owner	5 000 Value: $79.1K
Jun 10, 2025 Buy	Common Stock, par value $0.001 per share P-Purchase	Opaleye Management Inc. 10 Percent Owner	10% Owner	2 930 Value: $46.4K
Jun 10, 2025 Buy	Common Stock, par value $0.001 per share P-Purchase	Opaleye Management Inc. 10 Percent Owner	10% Owner	2 930 Value: $46.4K
Jun 10, 2025 Buy	Common Stock, par value $0.001 per share P-Purchase	Opaleye Management Inc. 10 Percent Owner	10% Owner	5 000 Value: $79.1K
Jun 05, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	70 000 Value: $1.18M
Jun 05, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	70 000 Value: $1.18M
Jun 04, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	70 000 Value: $1.19M
Jun 04, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	70 000 Value: $1.19M
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	60 945 Value: $1.06M
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	8 655 Value: $159.1K
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	400 Value: $8K
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	400 Value: $8K
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	8 655 Value: $159.1K
Jun 03, 2025 Sell	Common Stock S-Sale	Brynjelsen Sean President & CEO	CEO / President	60 945 Value: $1.06M
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) A-Award	Adams Jennifer Mckie Director	Director	25 000 Value: $325.0K
Jan 03, 2025 Buy	Common Stock M-Exempt	Riedel Norbert G Director	Director	25 000 Value: $86.8K
Jan 03, 2025 Buy	Common Stock M-Exempt	Riedel Norbert G Director	Director	50 000 Value: $189.0K
Jan 03, 2025 Buy	Common Stock M-Exempt	Riedel Norbert G Director	Director	27 400 Value: $98.1K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) M-Exempt	Riedel Norbert G Director	Director	25 000 Value: $86.8K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) M-Exempt	Riedel Norbert G Director	Director	27 400 Value: $98.1K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) M-Exempt	Riedel Norbert G Director	Director	50 000 Value: $189.0K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) A-Award	Casamento Charles J Director	Director	25 000 Value: $325.0K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) A-Award	Riedel Norbert G Director	Director	25 000 Value: $325.0K
Jan 03, 2025 Buy	Employee Stock Option (Right to Buy) A-Award	Maier Paul V Director	Director	25 000 Value: $325.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT ETON PHARMACEUTICALS INC.

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 Rezip...

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