InsiderClue
← All stocks

Eton Pharmaceuticals, Inc.

ETON Net selling
CIK 0001710340 #2154 in the set updated 17 Sep 2026
Bought (120 mo)
$4.43M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$50.72M
$0.00 on a plan · $9.43M straight out of an exercise
Sold at will
$41.29M
57 of 67 sales
Net
−$46.29M
−$36.86M against sales at will

By person

12 insiders · 103 transactions
85.5×

Sean E. Brynjelsen holds 85.5 times base salary in stock. $60.91M of shares against $712.43K in salary for 2025.

Salary from the company's own proxy. The shares are what Sean E. Brynjelsen last reported holding, valued at $61.77, the price Common Stock was last bought or sold at on the open market here, on 28 Aug 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
BRYNJELSEN SEAN
President & CEO
$264.12K (7)
$13.51M (11)
−$13.24M
986,134
3.45%
$60.91M
−12.4%
Opaleye Management Inc. entity
10% owner
$3.94M (15)
$15.98M (40)
−$12.04M
3,128,200
10.94%
$193.23M
−26.8%
HARROW HEALTH, INC. entity
10% owner
—
$10.63M (1)
−$10.63M
1,982,000
6.93%
$122.43M
−43.4%
Krempa David
Chief Business Officer
—
$5.36M (9) scheduled
−$5.36M
37,025
0.1295%
$2.29M
−54.5%
MAIER PAUL V
Director
$30.00K (1)
$2.95M (3) scheduled
−$2.92M
59,745
0.2090%
$3.69M
+9.1%
Adams Jennifer McKie
Director
—
$1.62M (1) scheduled
−$1.62M
0
0.0000%
$0.00
—
Gruber James R.
Chief Financial Officer
—
$673.71K (2)
−$673.71K
213,420
0.7467%
$13.18M
−18.5%
BAUM MARK L
Director
$60.00K (1)
—
+$60.00K
794,745
2.78%
$49.09M
+1.3%
Troutman William Wilson
CFO and Secretary
$52.15K (2)
—
+$52.15K
23,027
0.0806%
$1.42M
+76.8%
CASAMENTO CHARLES J
Director
$51.37K (2)
—
+$51.37K
71,920
0.2516%
$4.44M
+31.4%
RIEDEL NORBERT G
Director
$30.00K (1)
—
+$30.00K
67,155
0.2349%
$4.15M
—
Erdogan-Trinkaus Ipek
Chief Commercial Officer
—
—
—
2,403
0.0084%
$148.43K
−3.4%

Individual transactions

103
Insider
Date
Role
Action
Shares
Price
Amount
MAIER PAUL V
28 Aug 2026
Director
Sold after exercise
128
$61.77
$7.91K
MAIER PAUL V
28 Aug 2026
Director
Sold after exercise
13,485
$60.21
$811.93K
MAIER PAUL V
28 Aug 2026
Director
Sold after exercise
36,387
$58.64
$2.13M
Krempa David
24 Aug 2026
Chief Business Officer
Sold after exercise
25,000
$65.07
$1.63M
BRYNJELSEN SEAN
20 Aug 2026
President & CEO
Sell
7,342
$62.12
$456.09K
BRYNJELSEN SEAN
20 Aug 2026
President & CEO
Sell
36,373
$61.11
$2.22M
BRYNJELSEN SEAN
20 Aug 2026
President & CEO
Sell
47,307
$60.17
$2.85M
BRYNJELSEN SEAN
19 Aug 2026
President & CEO
Sell
8,978
$62.65
$562.47K
BRYNJELSEN SEAN
14 Jul 2026
President & CEO
Exercised, kept
200,000
$1.37
$274.00K
Opaleye Management Inc.
14 Jul 2026
10% owner
Sell indirect
13,315
$37.54
$499.89K
Opaleye Management Inc.
14 Jul 2026
10% owner
Sell indirect
15,000
$37.54
$563.15K
Opaleye Management Inc.
7 Jul 2026
10% owner
Sell indirect
6,685
$38.37
$256.52K
Opaleye Management Inc.
7 Jul 2026
10% owner
Sell indirect
20,000
$38.37
$767.46K
Opaleye Management Inc.
6 Jul 2026
10% owner
Sell indirect
10,000
$38.00
$380.00K
Opaleye Management Inc.
2 Jul 2026
10% owner
Sell indirect
25,000
$37.39
$934.63K
Opaleye Management Inc.
2 Jul 2026
10% owner
Sell indirect
65,000
$37.39
$2.43M
Adams Jennifer McKie
17 Jun 2026
Director
Sold after exercise
50,000
$32.48
$1.62M
BRYNJELSEN SEAN
28 May 2026
President & CEO
Sell
148
$32.67
$4.84K
BRYNJELSEN SEAN
28 May 2026
President & CEO
Sell
119,852
$31.88
$3.82M
Krempa David
27 May 2026
Chief Business Officer
Sold after exercise
19,679
$31.47
$619.37K
Krempa David
26 May 2026
Chief Business Officer
Sold after exercise
37,524
$31.49
$1.18M
Krempa David
22 May 2026
Chief Business Officer
Sold after exercise
519
$35.00
$18.17K
Krempa David
22 May 2026
Chief Business Officer
Sold after exercise
9,315
$33.88
$315.59K
Krempa David
22 May 2026
Chief Business Officer
Sold after exercise
32,963
$33.22
$1.10M
RIEDEL NORBERT G
21 Apr 2026
Director
Exercised, kept
19,655
$8.61
$169.23K
RIEDEL NORBERT G
21 Apr 2026
Director
Exercised, kept
12,500
$7.31
$91.38K
RIEDEL NORBERT G
3 Feb 2026
Director
Exercised, kept
30,000
$4.42
$132.60K
Gruber James R.
20 Aug 2025
Chief Financial Officer
Sell
2,631
$16.02
$42.15K
Gruber James R.
19 Aug 2025
Chief Financial Officer
Sell
39,082
$16.16
$631.57K
Krempa David
16 Jun 2025
Chief Business Officer
Sell
10,223
$14.73
$150.58K
Krempa David
13 Jun 2025
Chief Business Officer
Sell
6,800
$14.77
$100.44K
Krempa David
12 Jun 2025
Chief Business Officer
Sell
16,977
$14.92
$253.30K
Opaleye Management Inc.
10 Jun 2025
10% owner
Buy indirect
2,930
$15.82
$46.36K
Opaleye Management Inc.
10 Jun 2025
10% owner
Buy indirect
5,000
$15.82
$79.12K
BRYNJELSEN SEAN
5 Jun 2025
President & CEO
Sell
70,000
$16.81
$1.18M
BRYNJELSEN SEAN
4 Jun 2025
President & CEO
Sell
70,000
$17.00
$1.19M
BRYNJELSEN SEAN
3 Jun 2025
President & CEO
Sell
400
$19.02
$7.61K
BRYNJELSEN SEAN
3 Jun 2025
President & CEO
Sell
8,655
$18.38
$159.08K
BRYNJELSEN SEAN
3 Jun 2025
President & CEO
Sell
60,945
$17.38
$1.06M
RIEDEL NORBERT G
3 Jan 2025
Director
Exercised, kept
25,000
$3.47
$86.75K
RIEDEL NORBERT G
3 Jan 2025
Director
Exercised, kept
50,000
$3.78
$189.00K
RIEDEL NORBERT G
3 Jan 2025
Director
Exercised, kept
27,400
$3.58
$98.09K
Opaleye Management Inc.
23 Oct 2024
10% owner
Buy indirect
10,000
$7.98
$79.81K
Opaleye Management Inc.
8 Oct 2024
10% owner
Buy indirect
3,970
$7.03
$27.91K
Opaleye Management Inc.
8 Oct 2024
10% owner
Buy indirect
30,000
$7.03
$210.88K
Opaleye Management Inc.
7 Oct 2024
10% owner
Buy indirect
1,248
$7.22
$9.01K
Opaleye Management Inc.
7 Oct 2024
10% owner
Buy indirect
10,000
$7.22
$72.24K
Opaleye Management Inc.
4 Oct 2024
10% owner
Buy indirect
1,852
$6.77
$12.54K
Opaleye Management Inc.
4 Oct 2024
10% owner
Buy indirect
15,000
$6.77
$101.57K
Opaleye Management Inc.
11 Sep 2024
10% owner
Buy indirect
5,000
$4.75
$23.75K
Opaleye Management Inc.
11 Sep 2024
10% owner
Buy indirect
45,000
$4.75
$213.75K
Opaleye Management Inc.
10 Sep 2024
10% owner
Buy indirect
7,500
$4.65
$34.88K
Opaleye Management Inc.
10 Sep 2024
10% owner
Buy indirect
50,000
$4.65
$232.50K
BRYNJELSEN SEAN
22 Sep 2022
Chief Executive Officer
Buy
10,000
$2.10
$21.04K
Opaleye Management Inc.
17 Nov 2021
10% owner
Sell indirect
25,000
$4.67
$116.71K
Opaleye Management Inc.
16 Nov 2021
10% owner
Sell indirect
938
$4.86
$4.56K
Opaleye Management Inc.
16 Nov 2021
10% owner
Sell indirect
11,500
$4.86
$55.91K
Opaleye Management Inc.
15 Nov 2021
10% owner
Sell indirect
500
$4.80
$2.40K
Opaleye Management Inc.
15 Nov 2021
10% owner
Sell indirect
2,500
$4.80
$12.00K
Opaleye Management Inc.
8 Nov 2021
10% owner
Sell indirect
2,661
$6.10
$16.23K
Opaleye Management Inc.
8 Nov 2021
10% owner
Sell indirect
50,000
$6.10
$305.05K
Opaleye Management Inc.
5 Nov 2021
10% owner
Sell indirect
8,401
$6.30
$52.94K
Opaleye Management Inc.
5 Nov 2021
10% owner
Sell indirect
159,300
$6.30
$1.00M
Opaleye Management Inc.
4 Nov 2021
10% owner
Sell indirect
4,000
$6.44
$25.75K
Opaleye Management Inc.
4 Nov 2021
10% owner
Sell indirect
81,700
$6.44
$525.90K
Opaleye Management Inc.
3 Nov 2021
10% owner
Sell indirect
6,500
$6.53
$42.45K
Opaleye Management Inc.
3 Nov 2021
10% owner
Sell indirect
110,000
$6.53
$718.40K
Opaleye Management Inc.
12 Oct 2021
10% owner
Sell indirect
4,807
$5.06
$24.31K
Opaleye Management Inc.
12 Oct 2021
10% owner
Sell indirect
82,500
$5.06
$417.18K
Opaleye Management Inc.
11 Oct 2021
10% owner
Sell indirect
1,601
$5.01
$8.01K
Opaleye Management Inc.
11 Oct 2021
10% owner
Sell indirect
32,500
$5.01
$162.70K
Opaleye Management Inc.
8 Oct 2021
10% owner
Sell indirect
2,692
$5.00
$13.46K
Opaleye Management Inc.
8 Oct 2021
10% owner
Sell indirect
41,000
$5.00
$205.01K
BRYNJELSEN SEAN
20 Aug 2021
President & CEO
Buy
10,000
$4.32
$43.20K
Troutman William Wilson
20 Aug 2021
CFO, Treasurer & Secretary
Buy
5,000
$4.43
$22.15K
Opaleye Management Inc.
6 Aug 2021
10% owner
Sell indirect
15,000
$5.84
$87.60K
Opaleye Management Inc.
6 Aug 2021
10% owner
Sell indirect
330,000
$5.84
$1.93M
Opaleye Management Inc.
5 Aug 2021
10% owner
Sell indirect
5,500
$5.85
$32.19K
Opaleye Management Inc.
5 Aug 2021
10% owner
Sell indirect
150,000
$5.85
$877.98K
Opaleye Management Inc.
4 Aug 2021
10% owner
Sell indirect
4,000
$5.75
$23.01K
Opaleye Management Inc.
4 Aug 2021
10% owner
Sell indirect
100,000
$5.75
$575.14K
Opaleye Management Inc.
15 Jun 2021
10% owner
Sell indirect
4,000
$8.07
$32.28K
Opaleye Management Inc.
15 Jun 2021
10% owner
Sell indirect
101,000
$8.07
$815.07K
BRYNJELSEN SEAN
3 Jun 2021
President & CEO
Buy
5,000
$5.96
$29.80K
Opaleye Management Inc.
27 May 2021
10% owner
Sell indirect
4,600
$8.49
$39.05K
Opaleye Management Inc.
27 May 2021
10% owner
Sell indirect
121,400
$8.49
$1.03M
Opaleye Management Inc.
26 May 2021
10% owner
Sell indirect
2,800
$8.57
$24.00K
Opaleye Management Inc.
26 May 2021
10% owner
Sell indirect
65,500
$8.57
$561.34K
Opaleye Management Inc.
25 May 2021
10% owner
Sell indirect
2,000
$8.53
$17.06K
Opaleye Management Inc.
25 May 2021
10% owner
Sell indirect
46,000
$8.53
$392.38K
HARROW HEALTH, INC.
12 Apr 2021
10% owner
Sell
1,518,000
$7.00
$10.63M
Opaleye Management Inc.
16 Oct 2020
10% owner
Buy indirect
15,000
$7.00
$105.00K
Opaleye Management Inc.
16 Oct 2020
10% owner
Buy indirect
385,000
$7.00
$2.70M
BRYNJELSEN SEAN
13 Aug 2019
President & CEO
Buy
5,000
$6.15
$30.75K
CASAMENTO CHARLES J
9 Aug 2019
Director
Buy
3,500
$6.11
$21.37K
BRYNJELSEN SEAN
21 May 2019
President & CEO
Buy
8,600
$7.96
$68.43K
BRYNJELSEN SEAN
20 May 2019
President & CEO
Buy
1,400
$7.78
$10.89K
BAUM MARK L
15 Nov 2018
Director
Buy indirect
10,000
$6.00
$60.00K
Troutman William Wilson
15 Nov 2018
CFO, Treasurer & Secretary
Buy
5,000
$6.00
$30.00K
RIEDEL NORBERT G
15 Nov 2018
Director
Buy
5,000
$6.00
$30.00K
MAIER PAUL V
15 Nov 2018
Director
Buy
5,000
$6.00
$30.00K
BRYNJELSEN SEAN
15 Nov 2018
President & CEO
Buy
10,000
$6.00
$60.00K
CASAMENTO CHARLES J
15 Nov 2018
Director
Buy
5,000
$6.00
$30.00K

What was left out

Form 4 filings counted 111
Amendments (4/A) skipped 3
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 10
Sales at will 57
Transactions with no price 0
Shares from compensation/vesting 675,337
Sales filed before the plan box existed 34
History held since 15 Nov 2018