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Eton Pharmaceuticals, Inc. (ETON) XNAS PHARMACEUTICAL PREPARATIONS Net insider selling (90d)
Latest ETON Insider Trades
About Eton Pharmaceuticals, Inc. (ETON) Eton Pharmaceuticals Inc is a United States based specialty pharmaceutical company. The company is engaged in developing and commercializing pharmaceutical products to fulfill an unmet patient need. It has eight commercial rare disease products, INCRELEX, ALKINDI SPRINKLE, KHINDIVITM, GALZIN, PKU GOLIKE, Carglumic Acid, Betaine Anhydrous and Nitisinone. It also has five additional product candidates in late-stage development: ET-600, Amglidia, ET-700, ET-800 and ZENEO hydrocortisone autoinjector.
Headquarters DEER PARK, IL
Employees 44
Listed 2018
Exchange XNAS https://www.etonpharma.com SEC filings for ETON on EDGAR
90-Day SEC Filing Activity Form 4 transaction type Transactions Shares Total value Open-market sale 18 408,315 $19.19M Grant or award 9 420,216 Option exercise 12 725,000
ETON Insider Transactions (Form 4) 81 34 Form 4 filings on record, the earliest from Oct 4, 2024, newest first. Filing history page 1 of 2.
Date Insider Transaction Security Shares Price Value Aug 28, 2026 PM Paul V. Maier - Director Option exercise Common Stock 50,000
Recent ETON Form 8-K Filings 5
Recent ETON Form 144 Notices of Proposed Sale 3 A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
Filed Filer Relationship Shares Market value Notice Aug 28, 2026 MAIER PAUL V Director 50,000 $2.95M View on EDGAR Aug 24, 2026 Krempa David Officer
ETON Insider Trading - FAQ
What is the latest insider trade for ETON? Eton Pharmaceuticals, Inc. (ETON) had 18 insider filings in the last 90 days, with the most recent on 2026-08-28. The full record for ETON runs to 34 Form 4 filings, the earliest from 2024-10-04. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
How many insiders are buying ETON stock? No insider purchases of ETON were filed in the last 90 days. 7 purchases are on record for this company.
How many insiders are selling ETON stock? 18 insider sales of ETON were filed in the last 90 days, totaling $19.19M.
Where can I see ETON SEC filings (Form 4, 10-K, 10-Q, 8-K)? This page tracks ETON Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
How can I follow ETON insider buys? Create a free InsiderAlpha account and press Watch on this page to add ETON to your watchlist. A free account also opens the full scored daily plan with every past day and 3 months of price history. No card is required. Sign up at https://insideralpha.ai/register.
More Health Care Companies with Insider Activity Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Related Companies - Recent Insider Activity What is SEC Form 4? The filing insiders must submit within two business days of a trade, and how to read its transaction codes. Track ETON insider activity as it files Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
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Market cap $1.71B
P/E ratio 127.20
Dividend yield -
Average volume 532.0K
52 week high $66.37
52 week low $14.27
Today's high $62.12
Today's low $58.33
Open $61.98
Volume 588.7K
Previous close $62.67
Shares outstanding 28.58M Market cap
$1.71B
44 employees
ETON Insider Sentiment - Last 90 Days Share of open-market insider dollar volume that was buying versus selling, from SEC Form 4 filings.
0% Buying 100% Selling
0 insider purchases totaling $0 against 18 sales totaling $19.19M.
Most-Active ETON Insiders - Last 90 Days 10 Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
Aug 28, 2026 PM Paul V. Maier - Director Open-market sale Common Stock 36,387 $58.64 $2.13M
Aug 28, 2026 PM Paul V. Maier - Director Open-market sale Common Stock 13,485 $60.21 $812K
Aug 28, 2026 PM Paul V. Maier - Director Open-market sale Common Stock 128 $61.77 $8K
Aug 28, 2026 PM Paul V. Maier - Director Option exercise Employee Stock Option 50,000 $0.00 -
Aug 24, 2026 DK David Krempa - Officer Option exercise Common Stock 25,000 $7.31 $183K
Aug 24, 2026 DK David Krempa - Officer Open-market sale Common Stock 25,000 $65.07 $1.63M
Aug 24, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 25,000 $0.00 -
Aug 19, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 8,978 $62.65 $562K
Aug 20, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 47,307 $60.17 $2.85M
Aug 20, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 36,373 $61.11 $2.22M
Aug 20, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 7,342 $62.12 $456K
Jul 31, 2026 SB Sean Brynjelsen - Officer Grant or award Common Stock 128,985 $0.00 -
Jul 31, 2026 DK David Krempa - Officer Grant or award Common Stock 128,985 $0.00 -
Jul 31, 2026 PM Paul V. Maier - Director Grant or award Common Stock 10,000 $0.00 -
Jul 14, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 15,000 $37.54 $563K
Jul 14, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 13,315 $37.54 $500K
Jul 14, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 15,000 $37.54 $563K
Jul 14, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 13,315 $37.54 $500K
Jul 14, 2026 SB Sean Brynjelsen - Officer Option exercise Common Stock 200,000 $1.37 $274K
Jul 12, 2026 SB Sean Brynjelsen - Officer Option exercise Restricted Stock Units 27,500 $0.00 -
Jul 14, 2026 SB Sean Brynjelsen - Officer Option exercise Employee Stock Option 200,000 $0.00 -
Jul 12, 2026 DK David Krempa - Officer Option exercise Common Stock 10,000 - -
Jul 12, 2026 DK David Krempa - Officer Option exercise Restricted Stock Units 10,000 $0.00 -
Jul 6, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 10,000 $38.00 $380K
Jul 2, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 65,000 $37.39 $2.43M
Jul 2, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 25,000 $37.39 $935K
Jul 7, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 20,000 $38.37 $767K
Jul 7, 2026 Opaleye Management Inc. - 10% Owner Open-market sale Common Stock, par value $0.001 per share 6,685 $38.37 $257K
Jun 26, 2026 DK David Krempa - Officer Grant or award Restricted Stock Units 10,000 $0.00 -
May 28, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 148 $32.67 $5K
May 28, 2026 SB Sean Brynjelsen - Officer Open-market sale Common Stock 119,852 $31.88 $3.82M
May 22, 2026 DK David Krempa - Officer Option exercise Common Stock 30,591 $3.58 $110K
May 22, 2026 DK David Krempa - Officer Open-market sale Common Stock 519 $35.00 $18K
May 26, 2026 DK David Krempa - Officer Option exercise Common Stock 25,000 $1.38 $35K
May 26, 2026 DK David Krempa - Officer Option exercise Common Stock 12,524 $1.37 $17K
May 27, 2026 DK David Krempa - Officer Option exercise Common Stock 12,476 $1.37 $17K
May 27, 2026 DK David Krempa - Officer Option exercise Common Stock 7,203 $3.58 $26K
May 22, 2026 DK David Krempa - Officer Open-market sale Common Stock 32,963 $33.22 $1.10M
May 22, 2026 DK David Krempa - Officer Open-market sale Common Stock 9,315 $33.88 $316K
May 26, 2026 DK David Krempa - Officer Open-market sale Common Stock 37,524 $31.49 $1.18M
May 27, 2026 DK David Krempa - Officer Open-market sale Common Stock 19,679 $31.47 $619K
May 22, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 30,591 $0.00 -
May 26, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 25,000 $0.00 -
May 26, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 12,524 $0.00 -
May 27, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 12,476 $0.00 -
May 27, 2026 DK David Krempa - Officer Option exercise Employee Stock Option 7,203 $0.00 -
Apr 21, 2026 NR Norbert G. Riedel - Director Option exercise Common Stock 19,655 $8.61 $169K
Apr 21, 2026 NR Norbert G. Riedel - Director Option exercise Employee Stock Option (Right to Buy) 12,500 $0.00 -
Apr 21, 2026 NR Norbert G. Riedel - Director Option exercise Employee Stock Option (Right to Buy) 19,655 $0.00 -
Feb 3, 2026 NR Norbert G. Riedel - Director Other Employee Stock Option (Right to Buy) 30,000 $0.00 -
Jan 12, 2026 NR Norbert G. Riedel - Director Grant or award Employee Stock Option (Right to Buy) 12,196 $0.00 -
Jan 12, 2026 NR Norbert G. Riedel - Director Grant or award Restricted Stock Units 7,757 $0.00 -
Jan 12, 2026 JA Jennifer McKie Adams - Director Grant or award Employee Stock Option (Right to Buy) 12,196 $0.00 -
Jan 12, 2026 CC Charles J. Casamento - Director Grant or award Employee Stock Option (Right to Buy) 12,196 $0.00 -
Jan 12, 2026 PM Paul V. Maier - Director Grant or award Employee Stock Option (Right to Buy) 12,196 $0.00 -
Jan 12, 2026 PM Paul V. Maier - Director Grant or award Restricted Stock Units 7,757 $0.00 -
Jan 12, 2026 IE Ipek Erdogan-Trinkaus - Officer Grant or award Employee Stock Option (Right to Buy) 40,655 $0.00 -
Jan 1, 2026 SB Sean Brynjelsen - Officer Tax withholding / forfeiture Common Stock 5,015 $15.39 $77K
Jan 12, 2026 SB Sean Brynjelsen - Officer Grant or award Employee Stock Option (Right to Buy) 158,046 $0.00 -
Jan 12, 2026 SB Sean Brynjelsen - Officer Grant or award Restricted Stock Units 100,517 $0.00 -
Jan 14, 2026 DK David Krempa - Officer Tax withholding / forfeiture Common Stock 1,942 $15.62 $30K
Jan 12, 2026 DK David Krempa - Officer Grant or award Employee Stock Option (Right to Buy) 40,655 $0.00 -
Jan 12, 2026 DK David Krempa - Officer Grant or award Restricted Stock Units 25,856 $0.00 -
Jan 14, 2026 JG James R. Gruber - Officer Tax withholding / forfeiture Common Stock 2,293 $15.47 $35K
Jan 12, 2026 JG James R. Gruber - Officer Grant or award Employee Stock Option (Right to Buy) 40,655 $0.00 -
Jan 12, 2026 JG James R. Gruber - Officer Grant or award Restricted Stock Units 25,856 $0.00 -
Aug 20, 2026 BRYNJELSEN SEAN Officer, Director 100,000 $6.34M View on EDGAR
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