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Eton Pharmaceuticals Insider Trades

NASDAQ: ETONHealth CareBiotechnology: Pharmaceutical PreparationsUSD

55.21+0.46 (+0.84%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
0 · $0
Sales
29 · $29.43M
Shares bought / sold
0 / 682.48K
Net activity
Net selling $29.4 million

Eton Pharmaceuticals insider activity

Over the last 12 months, Eton Pharmaceuticals insiders reported 53 transactions on SEC Form 4: 0 open-market purchases and 29 sales. Insiders bought $0 and sold $29.4 million worth of stock, for net insider selling of $29.4 million. The largest seller was BRYNJELSEN SEAN, with $9.9 million in reported sales.

The most recent filing shows Krempa David (Chief Business Officer) selling 4,166 shares at $55.07 on Oct 6, 2026. Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put ETON's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

ETON insider transactions

Eton Pharmaceuticals insider transactions
DateInsiderTypeSharesValueFiling
Oct 6, 2026Krempa DavidChief Business OfficerSale4,166$229.41KForm 4
Oct 2, 2026Krempa DavidChief Business OfficerOption exercise10,522—Form 4
Aug 28, 2026MAIER PAUL VDirectorSale128$7.91KForm 4
Aug 28, 2026MAIER PAUL VDirectorSale13,485$811.93KForm 4
Aug 28, 2026MAIER PAUL VDirectorSale36,387$2.13MForm 4
Aug 28, 2026MAIER PAUL VDirectorOption exercise50,000$189.00KForm 4
Aug 28, 2026MAIER PAUL VDirectorOption exercise12,500$91.38KForm 4
Aug 28, 2026MAIER PAUL VDirectorSale128$7.91KForm 4
Aug 28, 2026MAIER PAUL VDirectorSale13,485$811.93KForm 4
Aug 28, 2026MAIER PAUL VDirectorSale36,387$2.13MForm 4
Aug 28, 2026MAIER PAUL VDirectorOption exercise50,000$189.00KForm 4
Aug 24, 2026Krempa DavidChief Business OfficerSale25,000$1.63MForm 4
Aug 24, 2026Krempa DavidChief Business OfficerOption exercise25,000$182.75KForm 4
Aug 20, 2026BRYNJELSEN SEANPresident & CEOSale7,342$456.09KForm 4
Aug 20, 2026BRYNJELSEN SEANPresident & CEOSale36,373$2.22MForm 4
Aug 20, 2026BRYNJELSEN SEANPresident & CEOSale47,307$2.85MForm 4
Aug 19, 2026BRYNJELSEN SEANPresident & CEOSale8,978$562.47KForm 4
Jul 14, 2026BRYNJELSEN SEANPresident & CEOOption exercise200,000$274.00KForm 4
Jul 14, 2026Opaleye Management Inc.10% OwnerSale13,315$499.89KForm 4
Jul 14, 2026Opaleye Management Inc.10% OwnerSale15,000$563.15KForm 4
Jul 14, 2026Opaleye Management Inc.10% OwnerSale13,315$499.89KForm 4
Jul 14, 2026Opaleye Management Inc.10% OwnerSale15,000$563.15KForm 4
Jul 12, 2026Krempa DavidChief Business OfficerOption exercise10,000—Form 4
Jul 12, 2026BRYNJELSEN SEANPresident & CEOOption exercise27,500—Form 4
Jul 7, 2026Opaleye Management Inc.10% OwnerSale6,685$256.52KForm 4
Jul 7, 2026Opaleye Management Inc.10% OwnerSale20,000$767.46KForm 4
Jul 6, 2026Opaleye Management Inc.10% OwnerSale10,000$380.00KForm 4
Jul 2, 2026Opaleye Management Inc.10% OwnerSale25,000$934.63KForm 4
Jul 2, 2026Opaleye Management Inc.10% OwnerSale65,000$2.43MForm 4
Jun 17, 2026Adams Jennifer McKieDirectorSale50,000$1.62MForm 4
Jun 17, 2026Adams Jennifer McKieDirectorOption exercise50,000$189.00KForm 4
May 28, 2026BRYNJELSEN SEANPresident & CEOSale148$4.84KForm 4
May 28, 2026BRYNJELSEN SEANPresident & CEOSale119,852$3.82MForm 4
May 27, 2026Krempa DavidChief Business OfficerSale19,679$619.37KForm 4
May 27, 2026Krempa DavidChief Business OfficerOption exercise7,203$25.79KForm 4
May 27, 2026Krempa DavidChief Business OfficerOption exercise12,476$17.09KForm 4
May 26, 2026Krempa DavidChief Business OfficerSale37,524$1.18MForm 4
May 26, 2026Krempa DavidChief Business OfficerOption exercise12,524$17.16KForm 4
May 26, 2026Krempa DavidChief Business OfficerOption exercise25,000$34.50KForm 4
May 22, 2026Krempa DavidChief Business OfficerSale519$18.16KForm 4
May 22, 2026Krempa DavidChief Business OfficerSale9,315$315.59KForm 4
May 22, 2026Krempa DavidChief Business OfficerSale32,963$1.10MForm 4
May 22, 2026Krempa DavidChief Business OfficerOption exercise30,591$109.52KForm 4
Apr 21, 2026RIEDEL NORBERT GDirectorOption exercise19,655$169.23KForm 4
Apr 21, 2026RIEDEL NORBERT GDirectorOption exercise12,500$91.38KForm 4
Feb 3, 2026RIEDEL NORBERT GDirectorOption exercise30,000$132.60KForm 4
Jan 14, 2026Gruber James R.Chief Financial OfficerTax withholding2,293$35.47KForm 4
Jan 14, 2026Krempa DavidChief Business OfficerTax withholding1,942$30.33KForm 4
Jan 1, 2026BRYNJELSEN SEANPresident & CEOTax withholding5,015$77.18KForm 4
Dec 12, 2025BRYNJELSEN SEANPresident & CEOTax withholding6,732$113.30KForm 4
Dec 12, 2025Krempa DavidChief Business OfficerTax withholding6,264$106.49KForm 4
Dec 12, 2025Gruber James R.Chief Financial OfficerTax withholding4,542$77.17KForm 4
Dec 12, 2025Erdogan-Trinkaus IpekChief Commercial OfficerTax withholding85$1.44KForm 4
Aug 20, 2025Gruber James R.Chief Financial OfficerSale2,631$42.15KForm 4
Aug 19, 2025Gruber James R.Chief Financial OfficerSale39,082$631.57KForm 4
Jun 16, 2025Krempa DavidChief Business OfficerSale10,223$150.58KForm 4
Jun 13, 2025Krempa DavidChief Business OfficerSale6,800$100.44KForm 4
Jun 12, 2025Krempa DavidChief Business OfficerSale16,977$253.30KForm 4
Jun 10, 2025Opaleye Management Inc.10% OwnerBuy2,930$46.36KForm 4
Jun 10, 2025Opaleye Management Inc.10% OwnerBuy5,000$79.12KForm 4
Jun 5, 2025BRYNJELSEN SEANPresident & CEOSale70,000$1.18MForm 4
Jun 4, 2025BRYNJELSEN SEANPresident & CEOSale70,000$1.19MForm 4
Jun 3, 2025BRYNJELSEN SEANPresident & CEOSale400$7.61KForm 4
Jun 3, 2025BRYNJELSEN SEANPresident & CEOSale8,655$159.08KForm 4
Jun 3, 2025BRYNJELSEN SEANPresident & CEOSale60,945$1.06MForm 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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