Eton Pharmaceuticals Inc (ETON)

Eton Pharmaceuticals experienced significant insider selling over the past 90 days, totaling approximately $10.9 million. Key executives, including the CEO and Chief Business Officer, offloaded shares following a strong 29.3% stock price increase. These transactions occurred alongside a positive earnings report, where the company outperformed expectations by 211.76%.
Ticker: ETON Exchange: NMS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Eton Pharmaceuticals Inc. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
249.96
Quantity 80,241 +42.9%
Value US$2,453,991
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
486.05
Quantity 94,300
Value US$2,009,482
2.9
MAIER PAUL V Non-Executive Director
Transaction date
Sale
Price
482.97
Quantity 73,561 -20.3%
Value US$1,536,982
2.9
MAIER PAUL V Non-Executive Director
Transaction date
Sale
Price
60.21
Quantity 13,485 -18.4%
Value US$811,932
2.9
MAIER PAUL V Non-Executive Director
Transaction date
Sale
Price
58.64
Quantity 36,387 -33.2%
Value US$2,133,734
2.9
MAIER PAUL V Director Non-Executive Director
Transaction date
Proposed sale
Price
59.07
Quantity 50,000
Value US$2,953,530
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
65.07
Quantity 25,000 -40.3%
Value US$1,626,750
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
65.07
Quantity 25,000
Value US$1,626,750
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
62.12
Quantity 7,342 -0.8%
Value US$456,085
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
61.11
Quantity 36,373 -3.6%
Value US$2,222,754
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
60.17
Quantity 47,307 -4.5%
Value US$2,846,462
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
62.65
Quantity 8,978 -0.8%
Value US$562,472
2.8
BRYNJELSEN SEAN Officer; Director Executive Director
Transaction date
Proposed sale
Price
63.43
Quantity 100,000
Value US$6,343,000
2.8
BRYNJELSEN SEAN Director; 10% Stockholder Non-Executive Director Large shareholder
Transaction date
Proposed sale
Price
63.43
Quantity 100,000
Value US$6,343,000
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Sale
Price
37.54
Quantity 13,315 -25.0%
Value US$499,886
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Sale
Price
37.54
Quantity 15,000 -0.6%
Value US$563,146
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Sale
Price
37.39
Quantity 65,000 -2.3%
Value US$2,430,032
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
35.70
Quantity 251,818
Value US$8,990,000
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
35.01
Quantity 25,000
Value US$875,251
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
33.23
Quantity 25,000
Value US$830,874
0.5
Adams Jennifer McKie Non-Executive Director
Transaction date
Sale
Price
32.48
Quantity 50,000 -100.0%
Value US$1,623,795
0.5
Adams Jennifer McKie Director Non-Executive Director
Transaction date
Proposed sale
Price
32.37
Quantity 50,000
Value US$1,618,500
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
27.00
Quantity 3,117
Value US$84,163
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
32.67
Quantity 148 -0.0%
Value US$4,835
2.8
BRYNJELSEN SEAN President & CEO Executive Director
Transaction date
Sale
Price
31.88
Quantity 119,852 -12.6%
Value US$3,820,882
2.8
BRYNJELSEN SEAN Director Non-Executive Director
Transaction date
Proposed sale
Price
32.40
Quantity 120,000
Value US$3,888,000
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
31.47
Quantity 19,679 -43.8%
Value US$619,375
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
31.49
Quantity 37,524 -59.8%
Value US$1,181,732
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
35.00
Quantity 519 -2.0%
Value US$18,165
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
33.88
Quantity 9,315 -26.6%
Value US$315,594
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
33.22
Quantity 32,963 -48.4%
Value US$1,095,057
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
35.00
Quantity 100,000
Value US$3,500,000
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
15.62
Quantity 1,942
Value US$30,334
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
15.47
Quantity 2,293
Value US$35,484
2.8
BRYNJELSEN SEAN Officer; Director; 10% Stockholder Executive Director Large shareholder
Transaction date
Proposed sale
Price
15.39
Quantity 5,015
Value US$77,182
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
16.88
Quantity 5,450
Value US$91,996
2.8
BRYNJELSEN SEAN Officer; Director; 10% Stockholder Executive Director Large shareholder
Transaction date
Proposed sale
Price
16.88
Quantity 8,035
Value US$135,631
Erdogan-Trinkaus Ipek Officer Officer
Transaction date
Proposed sale
Price
16.91
Quantity 99
Value US$1,674
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
16.88
Quantity 7,545
Value US$127,360
1.5
Gruber James R. Chief Financial Officer Officer
Transaction date
Sale
Price
16.02
Quantity 2,631 -1.3%
Value US$42,149
1.5
Gruber James R. Chief Financial Officer Officer
Transaction date
Sale
Price
16.16
Quantity 39,082 -16.0%
Value US$631,565
1.5
Gruber James R. Officer Officer
Transaction date
Proposed sale
Price
16.61
Quantity 41,713
Value US$692,645
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
14.73
Quantity 10,223 -1.6%
Value US$150,585
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
14.77
Quantity 6,800 -1.1%
Value US$100,436
1.8
Krempa David Chief Business Officer Officer
Transaction date
Sale
Price
14.92
Quantity 16,977 -2.6%
Value US$253,297
1.8
Krempa David Officer Officer
Transaction date
Proposed sale
Price
15.00
Quantity 40,000
Value US$600,000
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
15.82
Quantity 2,930 +3.6%
Value US$46,364
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
15.82
Quantity 5,000 +0.2%
Value US$79,120
2.8
BRYNJELSEN SEAN President & CEO Executive Director Large shareholder
Transaction date
Sale
Price
16.81
Quantity 70,000 -2.4%
Value US$1,176,700
2.8
BRYNJELSEN SEAN President & CEO Executive Director Large shareholder
Transaction date
Sale
Price
17.00
Quantity 70,000 -2.3%
Value US$1,190,000
2.8
BRYNJELSEN SEAN President & CEO Executive Director Large shareholder
Transaction date
Sale
Price
19.02
Quantity 400 -0.0%
Value US$7,608
2.8
BRYNJELSEN SEAN President & CEO Executive Director Large shareholder
Transaction date
Sale
Price
18.38
Quantity 8,655 -0.3%
Value US$159,079
2.8
BRYNJELSEN SEAN President & CEO Executive Director Large shareholder
Transaction date
Sale
Price
17.38
Quantity 60,945 -2.0%
Value US$1,059,224
2.8
BRYNJELSEN SEAN Officer; Director; 10% Stockholder Executive Director Large shareholder
Transaction date
Proposed sale
Price
18.00
Quantity 210,000
Value US$3,780,000
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
7.98
Quantity 10,000 +0.4%
Value US$79,814
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
7.03
Quantity 30,000 +1.1%
Value US$210,876
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
7.22
Quantity 10,000 +0.4%
Value US$72,235
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
6.77
Quantity 15,000 +0.6%
Value US$101,565
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
4.75
Quantity 5,000 +7.1%
Value US$23,750
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
4.75
Quantity 45,000 +1.7%
Value US$213,750
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
4.65
Quantity 7,500 +12.0%
Value US$34,875
3.4
Opaleye Management Inc. Large shareholder
Transaction date
Purchase
Price
4.65
Quantity 50,000 +1.9%
Value US$232,500
2.8
BRYNJELSEN SEAN Chief Executive Officer Executive Director
Transaction date
Purchase
Price
2.10
Quantity 10,000 +1.0%
Value US$21,042
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-10-06 2026-10-06 S Sale

Chief Business Officer

Officer
80,241 +42.9%
249.96
US$2,453,991
80,241 +42.9% 249.96 US$2,453,991
2026-10-06 2026-10-06 PrS Proposed sale

Officer

Officer
94,300
486.05
US$2,009,482
94,300 486.05 US$2,009,482
2026-08-28 2026-08-28 S Sale Non-Executive Director
73,561 -20.3%
482.97
US$1,536,982
73,561 -20.3% 482.97 US$1,536,982
2026-08-28 2026-08-28 S Sale Non-Executive Director
13,485 -18.4%
60.21
US$811,932
13,485 -18.4% 60.21 US$811,932
2026-08-28 2026-08-28 S Sale Non-Executive Director
36,387 -33.2%
58.64
US$2,133,734
36,387 -33.2% 58.64 US$2,133,734
2026-08-28 2026-08-28 PrS Proposed sale

Director

Non-Executive Director
50,000
59.07
US$2,953,530
50,000 59.07 US$2,953,530
2026-08-24 2026-08-24 S Sale

Chief Business Officer

Officer
25,000 -40.3%
65.07
US$1,626,750
25,000 -40.3% 65.07 US$1,626,750
2026-08-24 2026-08-24 PrS Proposed sale

Officer

Officer
25,000
65.07
US$1,626,750
25,000 65.07 US$1,626,750
2026-08-20 2026-08-20 S Sale

President & CEO

Executive Director
7,342 -0.8%
62.12
US$456,085
7,342 -0.8% 62.12 US$456,085
2026-08-20 2026-08-20 S Sale

President & CEO

Executive Director
36,373 -3.6%
61.11
US$2,222,754
36,373 -3.6% 61.11 US$2,222,754
2026-08-20 2026-08-20 S Sale

President & CEO

Executive Director
47,307 -4.5%
60.17
US$2,846,462
47,307 -4.5% 60.17 US$2,846,462
2026-08-20 2026-08-19 S Sale

President & CEO

Executive Director
8,978 -0.8%
62.65
US$562,472
8,978 -0.8% 62.65 US$562,472
2026-08-20 2026-08-19 PrS Proposed sale

Officer; Director

Executive Director
100,000
63.43
US$6,343,000
100,000 63.43 US$6,343,000
2026-08-19 2026-08-19 PrS Proposed sale

Director; 10% Stockholder

Non-Executive Director Large shareholder
100,000
63.43
US$6,343,000
100,000 63.43 US$6,343,000
2026-07-16 2026-07-14 S Sale Large shareholder
13,315 -25.0%
37.54
US$499,886
13,315 -25.0% 37.54 US$499,886
2026-07-16 2026-07-14 S Sale Large shareholder
15,000 -0.6%
37.54
US$563,146
15,000 -0.6% 37.54 US$563,146
2026-07-07 2026-07-07 S Sale Large shareholder
6,685 -11.1%
38.37
US$256,522
6,685 -11.1% 38.37 US$256,522
2026-07-07 2026-07-07 S Sale Large shareholder
20,000 -0.7%
38.37
US$767,456
20,000 -0.7% 38.37 US$767,456
2026-07-07 2026-07-06 S Sale Large shareholder
10,000 -0.4%
38.00
US$380,000
10,000 -0.4% 38.00 US$380,000
2026-07-07 2026-07-02 S Sale Large shareholder
25,000 -29.4%
37.39
US$934,628
25,000 -29.4% 37.39 US$934,628
2026-07-07 2026-07-02 S Sale Large shareholder
65,000 -2.3%
37.39
US$2,430,032
65,000 -2.3% 37.39 US$2,430,032
2026-06-26 2026-06-26 PrS Proposed sale

Officer

Officer
251,818
35.70
US$8,990,000
251,818 35.70 US$8,990,000
2026-06-25 2026-06-25 PrS Proposed sale

Officer

Officer
25,000
35.01
US$875,251
25,000 35.01 US$875,251
2026-06-23 2026-06-23 PrS Proposed sale

Officer

Officer
25,000
33.23
US$830,874
25,000 33.23 US$830,874
2026-06-17 2026-06-17 S Sale Non-Executive Director
50,000 -100.0%
32.48
US$1,623,795
50,000 -100.0% 32.48 US$1,623,795
2026-06-17 2026-06-17 PrS Proposed sale

Director

Non-Executive Director
50,000
32.37
US$1,618,500
50,000 32.37 US$1,618,500
2026-06-02 2026-06-02 PrS Proposed sale

Officer

Officer
3,117
27.00
US$84,163
3,117 27.00 US$84,163
2026-05-29 2026-05-28 S Sale

President & CEO

Executive Director
148 -0.0%
32.67
US$4,835
148 -0.0% 32.67 US$4,835
2026-05-29 2026-05-28 S Sale

President & CEO

Executive Director
119,852 -12.6%
31.88
US$3,820,882
119,852 -12.6% 31.88 US$3,820,882
2026-05-28 2026-05-28 PrS Proposed sale

Director

Non-Executive Director
120,000
32.40
US$3,888,000
120,000 32.40 US$3,888,000
2026-05-27 2026-05-27 S Sale

Chief Business Officer

Officer
19,679 -43.8%
31.47
US$619,375
19,679 -43.8% 31.47 US$619,375
2026-05-27 2026-05-26 S Sale

Chief Business Officer

Officer
37,524 -59.8%
31.49
US$1,181,732
37,524 -59.8% 31.49 US$1,181,732
2026-05-27 2026-05-22 S Sale

Chief Business Officer

Officer
519 -2.0%
35.00
US$18,165
519 -2.0% 35.00 US$18,165
2026-05-27 2026-05-22 S Sale

Chief Business Officer

Officer
9,315 -26.6%
33.88
US$315,594
9,315 -26.6% 33.88 US$315,594
2026-05-27 2026-05-22 S Sale

Chief Business Officer

Officer
32,963 -48.4%
33.22
US$1,095,057
32,963 -48.4% 33.22 US$1,095,057
2026-05-22 2026-05-22 PrS Proposed sale

Officer

Officer
100,000
35.00
US$3,500,000
100,000 35.00 US$3,500,000
2026-01-14 2026-01-14 PrS Proposed sale

Officer

Officer
1,942
15.62
US$30,334
1,942 15.62 US$30,334
2026-01-14 2026-01-14 PrS Proposed sale

Officer

Officer
2,293
15.47
US$35,484
2,293 15.47 US$35,484
2026-01-14 2026-01-14 PrS Proposed sale

Officer; Director; 10% Stockholder

Executive Director Large shareholder
5,015
15.39
US$77,182
5,015 15.39 US$77,182
2025-12-12 2025-12-12 PrS Proposed sale

Officer

Officer
5,450
16.88
US$91,996
5,450 16.88 US$91,996
2025-12-12 2025-12-12 PrS Proposed sale

Officer; Director; 10% Stockholder

Executive Director Large shareholder
8,035
16.88
US$135,631
8,035 16.88 US$135,631
2025-12-12 2025-12-12 PrS Proposed sale

Officer

Officer
99
16.91
US$1,674
99 16.91 US$1,674
2025-12-12 2025-12-12 PrS Proposed sale

Officer

Officer
7,545
16.88
US$127,360
7,545 16.88 US$127,360
2025-08-20 2025-08-20 S Sale

Chief Financial Officer

Officer
2,631 -1.3%
16.02
US$42,149
2,631 -1.3% 16.02 US$42,149
2025-08-20 2025-08-19 S Sale

Chief Financial Officer

Officer
39,082 -16.0%
16.16
US$631,565
39,082 -16.0% 16.16 US$631,565
2025-08-19 2025-08-18 PrS Proposed sale

Officer

Officer
41,713
16.61
US$692,645
41,713 16.61 US$692,645
2025-06-16 2025-06-16 S Sale

Chief Business Officer

Officer
10,223 -1.6%
14.73
US$150,585
10,223 -1.6% 14.73 US$150,585
2025-06-16 2025-06-13 S Sale

Chief Business Officer

Officer
6,800 -1.1%
14.77
US$100,436
6,800 -1.1% 14.77 US$100,436
2025-06-16 2025-06-12 S Sale

Chief Business Officer

Officer
16,977 -2.6%
14.92
US$253,297
16,977 -2.6% 14.92 US$253,297
2025-06-12 2025-06-12 PrS Proposed sale

Officer

Officer
40,000
15.00
US$600,000
40,000 15.00 US$600,000
2025-06-12 2025-06-10 B Purchase Large shareholder
2,930 +3.6%
15.82
US$46,364
2,930 +3.6% 15.82 US$46,364
2025-06-12 2025-06-10 B Purchase Large shareholder
5,000 +0.2%
15.82
US$79,120
5,000 +0.2% 15.82 US$79,120
2025-06-05 2025-06-05 S Sale

President & CEO

Executive Director Large shareholder
70,000 -2.4%
16.81
US$1,176,700
70,000 -2.4% 16.81 US$1,176,700
2025-06-05 2025-06-04 S Sale

President & CEO

Executive Director Large shareholder
70,000 -2.3%
17.00
US$1,190,000
70,000 -2.3% 17.00 US$1,190,000
2025-06-05 2025-06-03 S Sale

President & CEO

Executive Director Large shareholder
400 -0.0%
19.02
US$7,608
400 -0.0% 19.02 US$7,608
2025-06-05 2025-06-03 S Sale

President & CEO

Executive Director Large shareholder
8,655 -0.3%
18.38
US$159,079
8,655 -0.3% 18.38 US$159,079
2025-06-05 2025-06-03 S Sale

President & CEO

Executive Director Large shareholder
60,945 -2.0%
17.38
US$1,059,224
60,945 -2.0% 17.38 US$1,059,224
2025-06-03 2025-06-03 PrS Proposed sale

Officer; Director; 10% Stockholder

Executive Director Large shareholder
210,000
18.00
US$3,780,000
210,000 18.00 US$3,780,000
2024-10-25 2024-10-23 B Purchase Large shareholder
10,000 +0.4%
7.98
US$79,814
10,000 +0.4% 7.98 US$79,814
2024-10-08 2024-10-08 B Purchase Large shareholder
3,970 +5.1%
7.03
US$27,906
3,970 +5.1% 7.03 US$27,906
2024-10-08 2024-10-08 B Purchase Large shareholder
30,000 +1.1%
7.03
US$210,876
30,000 +1.1% 7.03 US$210,876
2024-10-08 2024-10-07 B Purchase Large shareholder
1,248 +1.6%
7.22
US$9,015
1,248 +1.6% 7.22 US$9,015
2024-10-08 2024-10-07 B Purchase Large shareholder
10,000 +0.4%
7.22
US$72,235
10,000 +0.4% 7.22 US$72,235
2024-10-08 2024-10-04 B Purchase Large shareholder
1,852 +2.5%
6.77
US$12,540
1,852 +2.5% 6.77 US$12,540
2024-10-08 2024-10-04 B Purchase Large shareholder
15,000 +0.6%
6.77
US$101,565
15,000 +0.6% 6.77 US$101,565
2024-09-12 2024-09-11 B Purchase Large shareholder
5,000 +7.1%
4.75
US$23,750
5,000 +7.1% 4.75 US$23,750
2024-09-12 2024-09-11 B Purchase Large shareholder
45,000 +1.7%
4.75
US$213,750
45,000 +1.7% 4.75 US$213,750
2024-09-12 2024-09-10 B Purchase Large shareholder
7,500 +12.0%
4.65
US$34,875
7,500 +12.0% 4.65 US$34,875
2024-09-12 2024-09-10 B Purchase Large shareholder
50,000 +1.9%
4.65
US$232,500
50,000 +1.9% 4.65 US$232,500
2022-09-23 2022-09-22 B Purchase

Chief Executive Officer

Executive Director
10,000 +1.0%
2.10
US$21,042
10,000 +1.0% 2.10 US$21,042
2021-11-19 2021-11-17 S Sale Large shareholder
25,000 -1.0%
4.67
US$116,712
25,000 -1.0% 4.67 US$116,712
2021-11-17 2021-11-16 S Sale Large shareholder
938 -1.1%
4.86
US$4,560
938 -1.1% 4.86 US$4,560
2021-11-17 2021-11-16 S Sale Large shareholder
11,500 -0.5%
4.86
US$55,912
11,500 -0.5% 4.86 US$55,912
2021-11-17 2021-11-15 S Sale Large shareholder
500 -0.6%
4.80
US$2,401
500 -0.6% 4.80 US$2,401
2021-11-17 2021-11-15 S Sale Large shareholder
2,500 -0.1%
4.80
US$12,004
2,500 -0.1% 4.80 US$12,004

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