Eton Pharmaceuticals, Inc.
US ˙ NasdaqGM ˙ US29772L1089

Introduction

This page provides a comprehensive analysis of the known insider trading history of Mark L Baum. Insiders are officers, directors, or significant investors in a company. It is illegal for insiders to make trades in their companies based on specific, non-public information. This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4. Despite these restrictions, academic research suggests that insiders - in general - tend to outperform the market in their own companies.

Average Trade Profitability

The average trade profitability is the average return of all the open market purchases made by the insider in the last three years. To calculate this, we examine every open-market, unplanned purchase made by the insider, excluding all trades that were marked as part of a 10b5-1 trading plan. We then calculate the average performance of those trades over 3, 6, and 12 months, averaging each of those durations to generate a final performance metric for each trade. Finally, we average all of the performance metrics to calculate a performance metric for the insider. This list only includes insiders that have made at least three trades in the last two years.

If this insiders trade profitability is "N/A", then the insider either has not made any open-market purchases in the last three years, or the trades they’ve made are too recent to calculate a reliable performance metric.

Update Frequency: Daily

See the list of most profitable insider traders.

Companies with Reported Insider Positions

The SEC filings indicate Mark L Baum has reported holdings or trades in the following companies:

Security Title Latest Reported Holdings
US:HROW / Harrow, Inc. CHIEF EXECUTIVE OFFICER, Director, 10% Owner 2,886,124
US:ETON / Eton Pharmaceuticals, Inc. Director 27,400
US:IPWR / Ideal Power Inc. Director 7,800
How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Mark L Baum. Non-planned trade are trades that were not made as part of a 10b5-1 trading plan. The stock performance is charted as cumulative percent change in share price. For example, if an insider trade was made on January 1, 2019, the chart will show the daily percent change of the security to the present day. If the share price were to go from $10 to $15 during this time, the cumulative percent change in share price would be 50%. A change in price from $10 to $20 would be 100%, and a change in price of $10 to $5 would be -50%.

Ultimately, we are trying to determine how closely the insider’s trades correlate to excess returns (positive or negative) in the share price in order to see if the insider is timing their trades to profit from insider information. Consider the situation where an insider was doing this. In this situation, we would expect either (a) positive returns after purchases, or (b) negative returns after sales. In the case of (a), the PURCHASE chart would show a series of upwardly sloping curves, indicating positive returns after each purchase transaction. In the case of (b), the SALE chart would show a series of downward sloping curves, indicating negative returns after each sale transaction.

However, this alone is not enough to draw conclusions. If, for example, the share price of the company was in a non-cyclical climb over many years, then we would expect all the post-purchase plots to be upwardly sloping. Likewise, non-cyclical declines over many years would result in downward sloping post-trade plots. Neither of these charts would suggest insider trading activity.

The strongest indicator would be a situation where the share price was extremely cyclical, and there were both positive signals in the PURCHASE chart and negative plots on the SALE chart. This situation would be highly suggestive of an insider that was timing trades to their financial advantage.

Insider Purchases ETON / Eton Pharmaceuticals, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in ETON / Eton Pharmaceuticals, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2018-11-15 ETON BAUM MARK L 10,000 6.0000 10,000 6.0000 60,000 237 8.7225 27,225 45.38

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

ETON / Eton Pharmaceuticals, Inc. Insider Trades
Insider Sales ETON / Eton Pharmaceuticals, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in ETON / Eton Pharmaceuticals, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

ETON / Eton Pharmaceuticals, Inc. Insider Trades
Insider Purchases HROW / Harrow, Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in ETON / Eton Pharmaceuticals, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2024-03-22 HROW BAUM MARK L 9,000 11.5900 9,000 11.5900 104,310 210 57.4800 413,010 395.94
2023-11-16 HROW BAUM MARK L 7,500 8.1100 7,500 8.1100 60,825
2023-08-14 HROW BAUM MARK L 5,800 17.0500 5,800 17.0500 98,890
2022-12-22 HROW BAUM MARK L 25,000 13.3900 25,000 13.3900 334,750
2016-12-19 IMMY BAUM MARK L 156,000 1.7900 156,000 1.7900 279,240

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

HROW / Harrow, Inc. Insider Trades
Insider Sales HROW / Harrow, Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in ETON / Eton Pharmaceuticals, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider and security combination

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

HROW / Harrow, Inc. Insider Trades
Insider Purchases IPWR / Ideal Power Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in ETON / Eton Pharmaceuticals, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2017-03-03 IPWR BAUM MARK L 7,800 2.5350 780 25.3500 19,773 17 35.2 7,683 38.86

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

IPWR / Ideal Power Inc. Insider Trades
Insider Sales IPWR / Ideal Power Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in ETON / Eton Pharmaceuticals, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market sales that were not part of an automatic trading plan.

Trade Date Ticker Insider Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
2015-11-13 IPWR BAUM MARK L 29,063 7.5350 2,906 75.3500 218,990 187 39 -105,655 -48.25

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

IPWR / Ideal Power Inc. Insider Trades
Insider Trading History

This table shows the complete list of insider trades made by Mark L Baum as disclosed to the Securities Exchange Commission (SEC).

File Date Tran Date Form Ticker Security Code 10b5-1 Shares Remaining Shares Percent
Change
Share
Price
Tran
Value
Remaining
Value
2025-07-23 2025-07-21 4 HROW HARROW, INC.
Common stock
F - Taxes -313,338 2,886,124 -9.79 37.08 -11,618,573 107,017,478
2025-07-23 2025-07-21 4 HROW HARROW, INC.
Common stock
M - Exercise 600,000 3,199,462 23.08 7.87 4,722,000 25,179,766
2025-04-07 2025-04-07 4 HROW HARROW, INC.
Common Stock
F - Taxes -300,363 2,599,462 -10.36 23.09 -6,935,382 60,021,578
2025-04-07 2025-04-03 4 HROW HARROW, INC.
Common Stock
M - Exercise 762,300 2,899,825 35.66
2024-03-25 2024-03-22 4 HROW HARROW, INC.
Common stock
P - Purchase 9,000 2,137,525 0.42 11.59 104,310 24,773,915
2024-02-21 2024-02-20 4 HROW HARROW, INC.
Common stock
M - Exercise -59,836 2,128,525 -2.73 10.67 -638,450 22,711,362
2024-02-21 2024-02-20 4 HROW HARROW, INC.
Common stock
M - Exercise 150,000 2,188,361 7.36 10.67 1,600,500 23,349,812
2024-02-08 2024-02-07 4 HROW HARROW, INC.
Common stock
M - Exercise 15,400 2,038,361 0.76 7.71 118,734 15,715,763
2023-11-16 2023-11-16 4 HROW HARROW, INC.
Common Stock
P - Purchase 7,500 2,022,961 0.37 8.11 60,825 16,406,214
2023-08-15 2023-08-14 4 HROW HARROW HEALTH, INC.
Common Stock
P - Purchase 5,800 2,015,461 0.29 17.05 98,890 34,363,610
2023-07-20 2023-07-18 4 HROW HARROW HEALTH, INC.
Common Stock
F - Taxes -299,968 2,009,661 -12.99 18.23 -5,468,417 36,636,120
2023-07-20 2023-07-18 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 762,300 2,309,629 49.27
2023-04-04 2023-04-03 4 HROW HARROW HEALTH, INC.
Common Stock
F - Taxes -117,633 1,547,329 -7.07 20.97 -2,466,764 32,447,489
2023-04-04 2023-04-03 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 180,000 1,664,962 12.12 8.99 1,618,200 14,968,008
2023-01-03 2023-01-02 4 HROW HARROW HEALTH, INC.
Common Stock
F - Taxes -35,179 1,484,962 -2.31 14.76 -519,242 21,918,039
2023-01-03 2023-01-02 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 88,000 1,520,141 6.14
2022-12-23 2022-12-22 4 HROW HARROW HEALTH, INC.
Common Stock
P - Purchase 25,000 1,432,141 1.78 13.39 334,750 19,176,368
2022-01-21 2022-01-20 4 HROW HARROW HEALTH, INC.
Stock Option (Right to buy)
M - Exercise -125,000 0 -100.00
2022-01-21 2022-01-20 4 HROW HARROW HEALTH, INC.
Common Stock
F - Taxes -71,406 1,407,141 -4.83 8.33 -594,812 11,721,485
2022-01-21 2022-01-20 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 125,000 1,478,547 9.23 2.40 300,000 3,548,513
2021-07-23 2021-07-23 4 HROW HARROW HEALTH, INC.
Restricted Stock Unit
A - Award 762,301 762,301
2021-04-27 2021-04-25 4 HROW HARROW HEALTH, INC.
Restricked Stock Unit
M - Exercise -850,000 0 -100.00
2021-04-27 2021-04-25 4 HROW HARROW HEALTH, INC.
Common Stock
F - Taxes -334,129 1,353,547 -19.80 8.26 -2,759,906 11,180,298
2021-04-27 2021-04-25 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 850,000 1,687,676 101.47
2021-02-26 2021-02-25 4 HROW HARROW HEALTH, INC.
Restricted Stock Unit
M - Exercise -200,000 850,000 -19.05
2021-02-26 2021-02-25 4 HROW HARROW HEALTH, INC.
Common Stock
M - Exercise 200,000 837,676 31.36
2021-02-23 2021-02-19 4 HROW HARROW HEALTH, INC.
Restricted Stock Unit
A - Award 150,000 150,000
2020-06-08 2020-06-04 4 HROW HARROW HEALTH, INC.
Employee Stock Option - Right to Buy
A - Award 600,000 600,000
2020-06-08 2020-06-04 4 HROW HARROW HEALTH, INC.
Employee Stock Option - Right to Buy
D - Sale to Issuer -600,000 0 -100.00
2020-03-16 2020-03-12 4 ETON Eton Pharmaceuticals, Inc.
Stock Option (Right to buy)
A - Award 27,400 27,400
2020-01-06 2020-01-02 4 HROW HARROW HEALTH, INC.
Restricted Stock Unit
A - Award -88,000 88,000 -50.00
2020-01-06 2020-01-02 4 HROW HARROW HEALTH, INC.
Option - Right to Buy
A - Award -217,500 217,500 -50.00
2020-01-06 2020-01-02 4/A HROW HARROW HEALTH, INC.
Restricted Stock Unit
A - Award 88,000 88,000
2020-01-06 2020-01-02 4/A HROW HARROW HEALTH, INC.
Option - Right to Buy
A - Award 217,500 217,500
2019-11-25 2019-11-22 4 HROW HARROW HEALTH, INC.
Purchase Warrant
X - Other -156,000 0 -100.00
2019-11-25 2019-11-22 4 HROW HARROW HEALTH, INC.
Common Stock
X - Other 156,000 598,126 35.28 1.79 279,240 1,070,646
2019-03-08 2019-02-20 4 ETON Eton Pharmaceuticals, Inc.
Stock option (right to buy)
A - Award 12,500 12,500
2019-02-21 2019-02-19 4 HROW HARROW HEALTH, INC.
Option - Right to Buy
A - Award 150,000 150,000
2018-11-15 2018-11-15 4 ETON Eton Pharmaceuticals, Inc.
Common Stock
P - Purchase 10,000 10,000 6.00 60,000 60,000
2018-11-13 3 ETON Eton Pharmaceuticals, Inc.
Common Stock
1,569,490
2018-11-13 3 ETON Eton Pharmaceuticals, Inc.
Common Stock
1,569,490
2018-11-13 3 ETON Eton Pharmaceuticals, Inc.
Common Stock
1,569,490
2018-01-04 2018-01-02 4 IMMY Imprimis Pharmaceuticals, Inc.
Option - Right to Buy
A - Award 150,000 150,000
2017-03-06 2017-03-03 4 IPWR Ideal Power Inc.
Common Stock Warrants
P - Purchase 7,800 7,800 2.54 19,773 19,773
2017-03-06 2017-03-03 4 IPWR Ideal Power Inc.
Common Stock
P - Purchase 7,800 33,698 30.12 2.54 19,773 85,424
2017-02-03 2017-02-01 4 IMMY Imprimis Pharmaceuticals, Inc.
Option - Right to Buy
A - Award 160,000 160,000
2017-01-20 2017-01-03 4 IPWR Ideal Power Inc.
Option to Purchase Stock
A - Award 27,875 27,875
2016-12-21 2016-12-19 4 IMMY Imprimis Pharmaceuticals, Inc.
Restricted Stock Unit
M - Exercise -200,000 0 -100.00
2016-12-21 2016-12-19 4 IMMY Imprimis Pharmaceuticals, Inc.
Purchase Warrant
P - Purchase 156,000 156,000 0.12 19,500 19,500
2016-12-21 2016-12-19 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
D - Sale to Issuer -83,709 442,126 -15.92 1.72 -143,979 760,457
2016-12-21 2016-12-19 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
M - Exercise 200,000 525,835 61.38 1.72 344,000 904,436
2016-12-21 2016-12-19 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
P - Purchase 156,000 325,835 91.85 1.79 279,240 583,245
2016-04-26 2016-04-25 4 IMMY Imprimis Pharmaceuticals, Inc.
Executive RSU
D - Sale to Issuer -1,050,000 0 -100.00
2016-04-26 2016-04-25 4 IMMY Imprimis Pharmaceuticals, Inc.
Executive RSU
A - Award 1,050,000 1,050,000
2016-04-05 2016-04-01 4 IMMY Imprimis Pharmaceuticals, Inc.
Option - Right to Buy
A - Award 180,000 180,000
2016-01-06 2016-01-04 4 IPWR Ideal Power Inc.
Option to Purchase Stock
A - Award 12,646 12,646
2016-01-06 2015-01-02 4 IPWR Ideal Power Inc.
Option to Purchase Stock
A - Award 12,834 12,834
2015-11-17 2015-11-13 4 IPWR Ideal Power Inc.
Common Stock
S - Sale -29,063 25,898 -52.88 7.54 -218,990 195,141
2015-08-05 2015-07-31 4 IMMY Imprimis Pharmaceuticals, Inc.
Employee Stock Option - Right to Buy
A - Award 600,000 600,000
2014-03-24 2014-01-03 4/A IPWR Ideal Power Inc.
Common Stock
A - Award 10,861 54,961 24.63 5.00 54,305 274,805
2014-03-24 2014-01-02 4/A IPWR Ideal Power Inc.
Option to Purchase Common Stock
A - Award 17,042 17,042
2014-02-11 2014-02-10 4 IMMY Imprimis Pharmaceuticals, Inc.
Option - Right to Buy
A - Award 15,400 15,400
2014-01-07 2014-01-03 4 IPWR Ideal Power Inc.
Common Stock
A - Award 10,861 54,961 24.63 5.00 54,305 274,805
2014-01-07 2014-01-02 4 IPWR Ideal Power Inc.
Option to Purchase Common Stock
A - Award 12,742 12,742
2013-12-02 2013-11-27 4 IPWR Ideal Power Inc.
Convertible Promissory Note
C - Conversion -1 14,383 -0.01 100,000.00 -100,000 1,438,300,000
2013-12-02 2013-11-27 4 IPWR Ideal Power Inc.
Common Stock
J - Other 29,063 29,063 3.48 101,139 101,139
2013-11-21 3 IPWR Ideal Power Inc.
Common Stock
52,432
2013-05-06 2013-05-02 4 IMMY Imprimis Pharmaceuticals, Inc.
Option - Right to Buy
A - Award 180,000 180,000
2013-05-06 2013-05-02 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
A - Award 200,000 1,419,835 16.40
2013-05-06 2013-05-02 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
A - Award 1,050,000 1,219,835 618.25
2013-03-15 2012-07-12 5 IMMY Imprimis Pharmaceuticals, Inc.
Warrants
J - Other 2,413 2,413
2013-03-15 2012-04-30 5 IMMY Imprimis Pharmaceuticals, Inc.
Warrants
P - Purchase 48,262 0 -100.00
2013-03-15 2012-04-30 5 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
J - Other 193,047 0 -100.00 762,534.00 147,204,901,098
2013-03-15 2012-04-01 5 IMMY Imprimis Pharmaceuticals, Inc.
Option (Right to Buy)
A - Award 25,000 25,000
2013-03-15 2012-04-01 5 IMMY Imprimis Pharmaceuticals, Inc.
Option (Right to Buy)
A - Award 60,000 60,000
2013-03-15 2012-02-28 5 IMMY Imprimis Pharmaceuticals, Inc.
Option (Right to Buy)
A - Award 125,000 125,000
2013-03-15 2012-02-28 5 IMMY Imprimis Pharmaceuticals, Inc.
Convertible Debenture
C - Conversion -856,087 0 -100.00
2013-03-15 2012-02-28 5 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
C - Conversion 1,454,962 0 -100.00
2013-03-15 2012-01-01 5 IMMY Imprimis Pharmaceuticals, Inc.
Convertible Debenture
P - Purchase 856,087 0 -100.00 50,000.00 42,804,350,000
2012-07-20 2012-07-18 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
A - Award 800,000 1,646,927 94.46
2012-07-20 2012-07-12 4 IMMY Imprimis Pharmaceuticals, Inc.
Series A Convertible Preferred Stock
C - Conversion -10 0 -100.00
2012-07-20 2012-07-12 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
J - Other 846,927 846,927
2012-07-20 2012-06-29 4 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
C - Conversion 7,498,500 15,738,545 91.00
2012-04-27 3 IMMY Imprimis Pharmaceuticals, Inc.
Common Stock
8,240,045
P
Open market or private purchase of non-derivative or derivative security
S
Open market or private sale of non-derivative or derivative security
A
Grant, award, or other acquisition of securities from the company (such as an option)
C
Conversion of derivative
D
Sale or transfer of securities back to the company
F
Payment of exercise price or tax liability using portion of securities received from the company
G
Gift of securities by or to the insider
K
Equity swaps and similar hedging transactions
M
Exercise or conversion of derivative security received from the company (such as an option)
V
A transaction voluntarily reported on Form 4
J
Other (accompanied by a footnote describing the transaction)