Leonard Osser - Insider Trading Tracker

Introduction

This page provides a comprehensive analysis of the known insider trading history of Leonard Osser. 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

Companies with Reported Insider Positions

The SEC filings indicate Leonard Osser has reported holdings or trades in the following companies:

How to Interpret the Charts

The following charts show the stock performance of securities subsequent to each open-market, non-planned trade made by Leonard Osser. 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 MLSS / Milestone Scientific Inc. - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in MLSS / Milestone Scientific 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 (%)
2020-08-04	MLSS	OSSER LEONARD	17,626	2.1000	17,626	2.1000	37,015	218	4.67	45,299	122.38
2019-02-06	MLSS	OSSER LEONARD	285,000	0.3500	285,000	0.3500	99,750
2015-05-19	MLSS.OB	OSSER LEONARD	25,000	2.4000	25,000	2.4000	60,000
2013-05-31	MLSS	OSSER LEONARD	13,043	1.1500	13,043	1.1500	14,999
2012-06-27	MLSS.OB	OSSER LEONARD	51,724	0.2900	51,724	0.2900	15,000

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

Insider Sales MLSS / Milestone Scientific Inc. - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in MLSS / Milestone Scientific 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 (%)
2024-10-22	MLSS	OSSER LEONARD	107,984	0.9300	107,984	0.9300	100,425	283	0.4307	-53,916	-53.69
2024-08-21	MLSS	OSSER LEONARD	141,913	0.9500	141,913	0.9500	134,817
2022-04-18	MLSS	OSSER LEONARD	9,842	1.1200	9,842	1.1200	11,023
2022-03-28	MLSS	OSSER LEONARD	7,110	1.3300	7,110	1.3300	9,456
2022-02-08	MLSS	OSSER LEONARD	7,600	1.3000	7,600	1.3000	9,880
2022-02-07	MLSS	OSSER LEONARD	8,000	1.2620	8,000	1.2620	10,096
2022-01-19	MLSS	OSSER LEONARD	5,800	1.7150	5,800	1.7150	9,947
2022-01-18	MLSS	OSSER LEONARD	5,800	1.7210	5,800	1.7210	9,982
2022-01-03	MLSS	OSSER LEONARD	5,000	2.1500	5,000	2.1500	10,750
2021-12-21	MLSS	OSSER LEONARD	4,850	2.0240	4,850	2.0240	9,816
2021-12-20	MLSS	OSSER LEONARD	5,000	2.0250	5,000	2.0250	10,125
2021-01-08	MLSS	OSSER LEONARD	18,409	2.3500	18,409	2.3500	43,261
2021-01-08	MLSS	OSSER LEONARD	21,591	2.3100	21,591	2.3100	49,875
2021-01-07	MLSS	OSSER LEONARD	45,240	2.2000	45,240	2.2000	99,528
2021-01-06	MLSS	OSSER LEONARD	10,760	2.2200	10,760	2.2200	23,887
2021-01-05	MLSS	OSSER LEONARD	59,668	2.2500	59,668	2.2500	134,253
2021-01-04	MLSS	OSSER LEONARD	71,886	2.3000	71,886	2.3000	165,338
2021-01-04	MLSS	OSSER LEONARD	31,378	2.3000	31,378	2.3000	72,169
2020-12-18	MLSS	OSSER LEONARD	54,400	2.1730	54,400	2.1730	118,211
2020-12-17	MLSS	OSSER LEONARD	16,300	2.2400	16,300	2.2400	36,512
2020-12-16	MLSS	OSSER LEONARD	72,500	2.1300	72,500	2.1300	154,425
2020-08-04	MLSS	OSSER LEONARD	133,333	2.1000	133,333	2.1000	279,999

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

Insider Purchases NXLIW / Nexalin Technology, Inc. - Equity Warrant - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made in MLSS / Milestone Scientific 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 (%)
2022-09-28	NXL	Elson Marilyn	9,500	1.1200	9,500	1.1200	10,640	64	2.3899	12,064	113.38
2022-09-16	NXL	Elson Marilyn	36,000	4.1500	36,000	4.1500	149,400

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

Insider Sales NXLIW / Nexalin Technology, Inc. - Equity Warrant - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made in MLSS / Milestone Scientific 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.

Insider Trading History

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